diff options
Diffstat (limited to 'roms/u-boot/arch/arm/cpu/armv7/omap-common')
16 files changed, 3526 insertions, 0 deletions
diff --git a/roms/u-boot/arch/arm/cpu/armv7/omap-common/Makefile b/roms/u-boot/arch/arm/cpu/armv7/omap-common/Makefile new file mode 100644 index 00000000..59f5352b --- /dev/null +++ b/roms/u-boot/arch/arm/cpu/armv7/omap-common/Makefile @@ -0,0 +1,34 @@ +# +# (C) Copyright 2000-2003 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# SPDX-License-Identifier: GPL-2.0+ +# + +obj-y := reset.o +obj-y += timer.o +obj-y += utils.o + +ifneq ($(CONFIG_OMAP44XX)$(CONFIG_OMAP54XX),) +obj-y += hwinit-common.o +obj-y += clocks-common.o +obj-y += emif-common.o +obj-y += vc.o +obj-y += abb.o +endif + +ifneq ($(CONFIG_OMAP54XX),) +obj-y += pipe3-phy.o +obj-$(CONFIG_SCSI_AHCI_PLAT) += sata.o +endif + +ifeq ($(CONFIG_OMAP34XX),) +obj-y += boot-common.o +obj-y += lowlevel_init.o +endif + +ifndef CONFIG_SPL_BUILD +ifneq ($(CONFIG_OMAP44XX)$(CONFIG_OMAP54XX),) +obj-y += mem-common.o +endif +endif diff --git a/roms/u-boot/arch/arm/cpu/armv7/omap-common/abb.c b/roms/u-boot/arch/arm/cpu/armv7/omap-common/abb.c new file mode 100644 index 00000000..423aeb98 --- /dev/null +++ b/roms/u-boot/arch/arm/cpu/armv7/omap-common/abb.c @@ -0,0 +1,121 @@ +/* + * Adaptive Body Bias programming sequence for OMAP family + * + * (C) Copyright 2013 + * Texas Instruments, <www.ti.com> + * + * Andrii Tseglytskyi <andrii.tseglytskyi@ti.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/omap_common.h> +#include <asm/arch/clock.h> +#include <asm/io.h> +#include <asm/arch/sys_proto.h> + +__weak s8 abb_setup_ldovbb(u32 fuse, u32 ldovbb) +{ + return -1; +} + +static void abb_setup_timings(u32 setup) +{ + u32 sys_rate, sr2_cnt, clk_cycles; + + /* + * SR2_WTCNT_VALUE is the settling time for the ABB ldo after a + * transition and must be programmed with the correct time at boot. + * The value programmed into the register is the number of SYS_CLK + * clock cycles that match a given wall time profiled for the ldo. + * This value depends on: + * settling time of ldo in micro-seconds (varies per OMAP family), + * of clock cycles per SYS_CLK period (varies per OMAP family), + * the SYS_CLK frequency in MHz (varies per board) + * The formula is: + * + * ldo settling time (in micro-seconds) + * SR2_WTCNT_VALUE = ------------------------------------------ + * (# system clock cycles) * (sys_clk period) + * + * Put another way: + * + * SR2_WTCNT_VALUE = settling time / (# SYS_CLK cycles / SYS_CLK rate)) + * + * To avoid dividing by zero multiply both "# clock cycles" and + * "settling time" by 10 such that the final result is the one we want. + */ + + /* calculate SR2_WTCNT_VALUE */ + sys_rate = DIV_ROUND(V_OSCK, 1000000); + clk_cycles = DIV_ROUND(OMAP_ABB_CLOCK_CYCLES * 10, sys_rate); + sr2_cnt = DIV_ROUND(OMAP_ABB_SETTLING_TIME * 10, clk_cycles); + + setbits_le32(setup, + sr2_cnt << (ffs(OMAP_ABB_SETUP_SR2_WTCNT_VALUE_MASK) - 1)); +} + +void abb_setup(u32 fuse, u32 ldovbb, u32 setup, u32 control, + u32 txdone, u32 txdone_mask, u32 opp) +{ + u32 abb_type_mask, opp_sel_mask; + + /* sanity check */ + if (!setup || !control || !txdone) + return; + + /* setup ABB only in case of Fast or Slow OPP */ + switch (opp) { + case OMAP_ABB_FAST_OPP: + abb_type_mask = OMAP_ABB_SETUP_ACTIVE_FBB_SEL_MASK; + opp_sel_mask = OMAP_ABB_CONTROL_FAST_OPP_SEL_MASK; + break; + case OMAP_ABB_SLOW_OPP: + abb_type_mask = OMAP_ABB_SETUP_ACTIVE_RBB_SEL_MASK; + opp_sel_mask = OMAP_ABB_CONTROL_SLOW_OPP_SEL_MASK; + break; + default: + return; + } + + /* + * For some OMAP silicons additional setup for LDOVBB register is + * required. This is determined by data retrieved from corresponding + * OPP EFUSE register. Data, which is retrieved from EFUSE - is + * ABB enable/disable flag and VSET value, which must be copied + * to LDOVBB register. If function call fails - return quietly, + * it means no ABB is required for such silicon. + * + * For silicons, which don't require LDOVBB setup "fuse" and + * "ldovbb" offsets are not defined. ABB will be initialized in + * the common way for them. + */ + if (fuse && ldovbb) { + if (abb_setup_ldovbb(fuse, ldovbb)) + return; + } + + /* clear ABB registers */ + writel(0, setup); + writel(0, control); + + /* configure timings, based on oscillator value */ + abb_setup_timings(setup); + + /* clear pending interrupts before setup */ + setbits_le32(txdone, txdone_mask); + + /* select ABB type */ + setbits_le32(setup, abb_type_mask | OMAP_ABB_SETUP_SR2EN_MASK); + + /* initiate ABB ldo change */ + setbits_le32(control, opp_sel_mask | OMAP_ABB_CONTROL_OPP_CHANGE_MASK); + + /* wait until transition complete */ + if (!wait_on_value(txdone_mask, txdone_mask, (void *)txdone, LDELAY)) + puts("Error: ABB txdone is not set\n"); + + /* clear ABB tranxdone */ + setbits_le32(txdone, txdone_mask); +} diff --git a/roms/u-boot/arch/arm/cpu/armv7/omap-common/boot-common.c b/roms/u-boot/arch/arm/cpu/armv7/omap-common/boot-common.c new file mode 100644 index 00000000..30335647 --- /dev/null +++ b/roms/u-boot/arch/arm/cpu/armv7/omap-common/boot-common.c @@ -0,0 +1,134 @@ +/* + * boot-common.c + * + * Common bootmode functions for omap based boards + * + * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/ + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <spl.h> +#include <asm/omap_common.h> +#include <asm/arch/omap.h> +#include <asm/arch/mmc_host_def.h> +#include <asm/arch/sys_proto.h> +#include <watchdog.h> + +DECLARE_GLOBAL_DATA_PTR; + +void save_omap_boot_params(void) +{ + u32 rom_params = *((u32 *)OMAP_SRAM_SCRATCH_BOOT_PARAMS); + u8 boot_device; + u32 dev_desc, dev_data; + + if ((rom_params < NON_SECURE_SRAM_START) || + (rom_params > NON_SECURE_SRAM_END)) + return; + + /* + * rom_params can be type casted to omap_boot_parameters and + * used. But it not correct to assume that romcode structure + * encoding would be same as u-boot. So use the defined offsets. + */ + gd->arch.omap_boot_params.omap_bootdevice = boot_device = + *((u8 *)(rom_params + BOOT_DEVICE_OFFSET)); + + gd->arch.omap_boot_params.ch_flags = + *((u8 *)(rom_params + CH_FLAGS_OFFSET)); + + if ((boot_device >= MMC_BOOT_DEVICES_START) && + (boot_device <= MMC_BOOT_DEVICES_END)) { +#if !defined(CONFIG_AM33XX) && !defined(CONFIG_TI81XX) && \ + !defined(CONFIG_AM43XX) + if ((omap_hw_init_context() == + OMAP_INIT_CONTEXT_UBOOT_AFTER_SPL)) { + gd->arch.omap_boot_params.omap_bootmode = + *((u8 *)(rom_params + BOOT_MODE_OFFSET)); + } else +#endif + { + dev_desc = *((u32 *)(rom_params + DEV_DESC_PTR_OFFSET)); + dev_data = *((u32 *)(dev_desc + DEV_DATA_PTR_OFFSET)); + gd->arch.omap_boot_params.omap_bootmode = + *((u32 *)(dev_data + BOOT_MODE_OFFSET)); + } + } + +#ifdef CONFIG_DRA7XX + /* + * We get different values for QSPI_1 and QSPI_4 being used, but + * don't actually care about this difference. Rather than + * mangle the later code, if we're coming in as QSPI_4 just + * change to the QSPI_1 value. + */ + if (gd->arch.omap_boot_params.omap_bootdevice == 11) + gd->arch.omap_boot_params.omap_bootdevice = BOOT_DEVICE_SPI; +#endif +} + +#ifdef CONFIG_SPL_BUILD +u32 spl_boot_device(void) +{ + return (u32) (gd->arch.omap_boot_params.omap_bootdevice); +} + +u32 spl_boot_mode(void) +{ + u32 val = gd->arch.omap_boot_params.omap_bootmode; + + if (val == MMCSD_MODE_RAW) + return MMCSD_MODE_RAW; + else if (val == MMCSD_MODE_FAT) + return MMCSD_MODE_FAT; + else +#ifdef CONFIG_SUPPORT_EMMC_BOOT + return MMCSD_MODE_EMMCBOOT; +#else + return MMCSD_MODE_UNDEFINED; +#endif +} + +void spl_board_init(void) +{ +#ifdef CONFIG_SPL_NAND_SUPPORT + gpmc_init(); +#endif +#if defined(CONFIG_AM33XX) && defined(CONFIG_SPL_MUSB_NEW_SUPPORT) + arch_misc_init(); +#endif +#if defined(CONFIG_HW_WATCHDOG) + hw_watchdog_init(); +#endif +#ifdef CONFIG_AM33XX + am33xx_spl_board_init(); +#endif +} + +int board_mmc_init(bd_t *bis) +{ + switch (spl_boot_device()) { + case BOOT_DEVICE_MMC1: + omap_mmc_init(0, 0, 0, -1, -1); + break; + case BOOT_DEVICE_MMC2: + case BOOT_DEVICE_MMC2_2: + omap_mmc_init(1, 0, 0, -1, -1); + break; + } + return 0; +} + +void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image) +{ + typedef void __noreturn (*image_entry_noargs_t)(u32 *); + image_entry_noargs_t image_entry = + (image_entry_noargs_t) spl_image->entry_point; + + debug("image entry point: 0x%X\n", spl_image->entry_point); + /* Pass the saved boot_params from rom code */ + image_entry((u32 *)&gd->arch.omap_boot_params); +} +#endif diff --git a/roms/u-boot/arch/arm/cpu/armv7/omap-common/clocks-common.c b/roms/u-boot/arch/arm/cpu/armv7/omap-common/clocks-common.c new file mode 100644 index 00000000..8e7411d4 --- /dev/null +++ b/roms/u-boot/arch/arm/cpu/armv7/omap-common/clocks-common.c @@ -0,0 +1,733 @@ +/* + * + * Clock initialization for OMAP4 + * + * (C) Copyright 2010 + * Texas Instruments, <www.ti.com> + * + * Aneesh V <aneesh@ti.com> + * + * Based on previous work by: + * Santosh Shilimkar <santosh.shilimkar@ti.com> + * Rajendra Nayak <rnayak@ti.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#include <common.h> +#include <i2c.h> +#include <asm/omap_common.h> +#include <asm/gpio.h> +#include <asm/arch/clock.h> +#include <asm/arch/sys_proto.h> +#include <asm/utils.h> +#include <asm/omap_gpio.h> +#include <asm/emif.h> + +#ifndef CONFIG_SPL_BUILD +/* + * printing to console doesn't work unless + * this code is executed from SPL + */ +#define printf(fmt, args...) +#define puts(s) +#endif + +const u32 sys_clk_array[8] = { + 12000000, /* 12 MHz */ + 20000000, /* 20 MHz */ + 16800000, /* 16.8 MHz */ + 19200000, /* 19.2 MHz */ + 26000000, /* 26 MHz */ + 27000000, /* 27 MHz */ + 38400000, /* 38.4 MHz */ +}; + +static inline u32 __get_sys_clk_index(void) +{ + s8 ind; + /* + * For ES1 the ROM code calibration of sys clock is not reliable + * due to hw issue. So, use hard-coded value. If this value is not + * correct for any board over-ride this function in board file + * From ES2.0 onwards you will get this information from + * CM_SYS_CLKSEL + */ + if (omap_revision() == OMAP4430_ES1_0) + ind = OMAP_SYS_CLK_IND_38_4_MHZ; + else { + /* SYS_CLKSEL - 1 to match the dpll param array indices */ + ind = (readl((*prcm)->cm_sys_clksel) & + CM_SYS_CLKSEL_SYS_CLKSEL_MASK) - 1; + } + return ind; +} + +u32 get_sys_clk_index(void) + __attribute__ ((weak, alias("__get_sys_clk_index"))); + +u32 get_sys_clk_freq(void) +{ + u8 index = get_sys_clk_index(); + return sys_clk_array[index]; +} + +void setup_post_dividers(u32 const base, const struct dpll_params *params) +{ + struct dpll_regs *const dpll_regs = (struct dpll_regs *)base; + + /* Setup post-dividers */ + if (params->m2 >= 0) + writel(params->m2, &dpll_regs->cm_div_m2_dpll); + if (params->m3 >= 0) + writel(params->m3, &dpll_regs->cm_div_m3_dpll); + if (params->m4_h11 >= 0) + writel(params->m4_h11, &dpll_regs->cm_div_m4_h11_dpll); + if (params->m5_h12 >= 0) + writel(params->m5_h12, &dpll_regs->cm_div_m5_h12_dpll); + if (params->m6_h13 >= 0) + writel(params->m6_h13, &dpll_regs->cm_div_m6_h13_dpll); + if (params->m7_h14 >= 0) + writel(params->m7_h14, &dpll_regs->cm_div_m7_h14_dpll); + if (params->h21 >= 0) + writel(params->h21, &dpll_regs->cm_div_h21_dpll); + if (params->h22 >= 0) + writel(params->h22, &dpll_regs->cm_div_h22_dpll); + if (params->h23 >= 0) + writel(params->h23, &dpll_regs->cm_div_h23_dpll); + if (params->h24 >= 0) + writel(params->h24, &dpll_regs->cm_div_h24_dpll); +} + +static inline void do_bypass_dpll(u32 const base) +{ + struct dpll_regs *dpll_regs = (struct dpll_regs *)base; + + clrsetbits_le32(&dpll_regs->cm_clkmode_dpll, + CM_CLKMODE_DPLL_DPLL_EN_MASK, + DPLL_EN_FAST_RELOCK_BYPASS << + CM_CLKMODE_DPLL_EN_SHIFT); +} + +static inline void wait_for_bypass(u32 const base) +{ + struct dpll_regs *const dpll_regs = (struct dpll_regs *)base; + + if (!wait_on_value(ST_DPLL_CLK_MASK, 0, &dpll_regs->cm_idlest_dpll, + LDELAY)) { + printf("Bypassing DPLL failed %x\n", base); + } +} + +static inline void do_lock_dpll(u32 const base) +{ + struct dpll_regs *const dpll_regs = (struct dpll_regs *)base; + + clrsetbits_le32(&dpll_regs->cm_clkmode_dpll, + CM_CLKMODE_DPLL_DPLL_EN_MASK, + DPLL_EN_LOCK << CM_CLKMODE_DPLL_EN_SHIFT); +} + +static inline void wait_for_lock(u32 const base) +{ + struct dpll_regs *const dpll_regs = (struct dpll_regs *)base; + + if (!wait_on_value(ST_DPLL_CLK_MASK, ST_DPLL_CLK_MASK, + &dpll_regs->cm_idlest_dpll, LDELAY)) { + printf("DPLL locking failed for %x\n", base); + hang(); + } +} + +inline u32 check_for_lock(u32 const base) +{ + struct dpll_regs *const dpll_regs = (struct dpll_regs *)base; + u32 lock = readl(&dpll_regs->cm_idlest_dpll) & ST_DPLL_CLK_MASK; + + return lock; +} + +const struct dpll_params *get_mpu_dpll_params(struct dplls const *dpll_data) +{ + u32 sysclk_ind = get_sys_clk_index(); + return &dpll_data->mpu[sysclk_ind]; +} + +const struct dpll_params *get_core_dpll_params(struct dplls const *dpll_data) +{ + u32 sysclk_ind = get_sys_clk_index(); + return &dpll_data->core[sysclk_ind]; +} + +const struct dpll_params *get_per_dpll_params(struct dplls const *dpll_data) +{ + u32 sysclk_ind = get_sys_clk_index(); + return &dpll_data->per[sysclk_ind]; +} + +const struct dpll_params *get_iva_dpll_params(struct dplls const *dpll_data) +{ + u32 sysclk_ind = get_sys_clk_index(); + return &dpll_data->iva[sysclk_ind]; +} + +const struct dpll_params *get_usb_dpll_params(struct dplls const *dpll_data) +{ + u32 sysclk_ind = get_sys_clk_index(); + return &dpll_data->usb[sysclk_ind]; +} + +const struct dpll_params *get_abe_dpll_params(struct dplls const *dpll_data) +{ +#ifdef CONFIG_SYS_OMAP_ABE_SYSCK + u32 sysclk_ind = get_sys_clk_index(); + return &dpll_data->abe[sysclk_ind]; +#else + return dpll_data->abe; +#endif +} + +static const struct dpll_params *get_ddr_dpll_params + (struct dplls const *dpll_data) +{ + u32 sysclk_ind = get_sys_clk_index(); + + if (!dpll_data->ddr) + return NULL; + return &dpll_data->ddr[sysclk_ind]; +} + +#ifdef CONFIG_DRIVER_TI_CPSW +static const struct dpll_params *get_gmac_dpll_params + (struct dplls const *dpll_data) +{ + u32 sysclk_ind = get_sys_clk_index(); + + if (!dpll_data->gmac) + return NULL; + return &dpll_data->gmac[sysclk_ind]; +} +#endif + +static void do_setup_dpll(u32 const base, const struct dpll_params *params, + u8 lock, char *dpll) +{ + u32 temp, M, N; + struct dpll_regs *const dpll_regs = (struct dpll_regs *)base; + + if (!params) + return; + + temp = readl(&dpll_regs->cm_clksel_dpll); + + if (check_for_lock(base)) { + /* + * The Dpll has already been locked by rom code using CH. + * Check if M,N are matching with Ideal nominal opp values. + * If matches, skip the rest otherwise relock. + */ + M = (temp & CM_CLKSEL_DPLL_M_MASK) >> CM_CLKSEL_DPLL_M_SHIFT; + N = (temp & CM_CLKSEL_DPLL_N_MASK) >> CM_CLKSEL_DPLL_N_SHIFT; + if ((M != (params->m)) || (N != (params->n))) { + debug("\n %s Dpll locked, but not for ideal M = %d," + "N = %d values, current values are M = %d," + "N= %d" , dpll, params->m, params->n, + M, N); + } else { + /* Dpll locked with ideal values for nominal opps. */ + debug("\n %s Dpll already locked with ideal" + "nominal opp values", dpll); + goto setup_post_dividers; + } + } + + bypass_dpll(base); + + /* Set M & N */ + temp &= ~CM_CLKSEL_DPLL_M_MASK; + temp |= (params->m << CM_CLKSEL_DPLL_M_SHIFT) & CM_CLKSEL_DPLL_M_MASK; + + temp &= ~CM_CLKSEL_DPLL_N_MASK; + temp |= (params->n << CM_CLKSEL_DPLL_N_SHIFT) & CM_CLKSEL_DPLL_N_MASK; + + writel(temp, &dpll_regs->cm_clksel_dpll); + + /* Lock */ + if (lock) + do_lock_dpll(base); + +setup_post_dividers: + setup_post_dividers(base, params); + + /* Wait till the DPLL locks */ + if (lock) + wait_for_lock(base); +} + +u32 omap_ddr_clk(void) +{ + u32 ddr_clk, sys_clk_khz, omap_rev, divider; + const struct dpll_params *core_dpll_params; + + omap_rev = omap_revision(); + sys_clk_khz = get_sys_clk_freq() / 1000; + + core_dpll_params = get_core_dpll_params(*dplls_data); + + debug("sys_clk %d\n ", sys_clk_khz * 1000); + + /* Find Core DPLL locked frequency first */ + ddr_clk = sys_clk_khz * 2 * core_dpll_params->m / + (core_dpll_params->n + 1); + + if (omap_rev < OMAP5430_ES1_0) { + /* + * DDR frequency is PHY_ROOT_CLK/2 + * PHY_ROOT_CLK = Fdpll/2/M2 + */ + divider = 4; + } else { + /* + * DDR frequency is PHY_ROOT_CLK + * PHY_ROOT_CLK = Fdpll/2/M2 + */ + divider = 2; + } + + ddr_clk = ddr_clk / divider / core_dpll_params->m2; + ddr_clk *= 1000; /* convert to Hz */ + debug("ddr_clk %d\n ", ddr_clk); + + return ddr_clk; +} + +/* + * Lock MPU dpll + * + * Resulting MPU frequencies: + * 4430 ES1.0 : 600 MHz + * 4430 ES2.x : 792 MHz (OPP Turbo) + * 4460 : 920 MHz (OPP Turbo) - DCC disabled + */ +void configure_mpu_dpll(void) +{ + const struct dpll_params *params; + struct dpll_regs *mpu_dpll_regs; + u32 omap_rev; + omap_rev = omap_revision(); + + /* + * DCC and clock divider settings for 4460. + * DCC is required, if more than a certain frequency is required. + * For, 4460 > 1GHZ. + * 5430 > 1.4GHZ. + */ + if ((omap_rev >= OMAP4460_ES1_0) && (omap_rev < OMAP5430_ES1_0)) { + mpu_dpll_regs = + (struct dpll_regs *)((*prcm)->cm_clkmode_dpll_mpu); + bypass_dpll((*prcm)->cm_clkmode_dpll_mpu); + clrbits_le32((*prcm)->cm_mpu_mpu_clkctrl, + MPU_CLKCTRL_CLKSEL_EMIF_DIV_MODE_MASK); + setbits_le32((*prcm)->cm_mpu_mpu_clkctrl, + MPU_CLKCTRL_CLKSEL_ABE_DIV_MODE_MASK); + clrbits_le32(&mpu_dpll_regs->cm_clksel_dpll, + CM_CLKSEL_DCC_EN_MASK); + } + + params = get_mpu_dpll_params(*dplls_data); + + do_setup_dpll((*prcm)->cm_clkmode_dpll_mpu, params, DPLL_LOCK, "mpu"); + debug("MPU DPLL locked\n"); +} + +#if defined(CONFIG_USB_EHCI_OMAP) || defined(CONFIG_USB_XHCI_OMAP) +static void setup_usb_dpll(void) +{ + const struct dpll_params *params; + u32 sys_clk_khz, sd_div, num, den; + + sys_clk_khz = get_sys_clk_freq() / 1000; + /* + * USB: + * USB dpll is J-type. Need to set DPLL_SD_DIV for jitter correction + * DPLL_SD_DIV = CEILING ([DPLL_MULT/(DPLL_DIV+1)]* CLKINP / 250) + * - where CLKINP is sys_clk in MHz + * Use CLKINP in KHz and adjust the denominator accordingly so + * that we have enough accuracy and at the same time no overflow + */ + params = get_usb_dpll_params(*dplls_data); + num = params->m * sys_clk_khz; + den = (params->n + 1) * 250 * 1000; + num += den - 1; + sd_div = num / den; + clrsetbits_le32((*prcm)->cm_clksel_dpll_usb, + CM_CLKSEL_DPLL_DPLL_SD_DIV_MASK, + sd_div << CM_CLKSEL_DPLL_DPLL_SD_DIV_SHIFT); + + /* Now setup the dpll with the regular function */ + do_setup_dpll((*prcm)->cm_clkmode_dpll_usb, params, DPLL_LOCK, "usb"); +} +#endif + +static void setup_dplls(void) +{ + u32 temp; + const struct dpll_params *params; + + debug("setup_dplls\n"); + + /* CORE dpll */ + params = get_core_dpll_params(*dplls_data); /* default - safest */ + /* + * Do not lock the core DPLL now. Just set it up. + * Core DPLL will be locked after setting up EMIF + * using the FREQ_UPDATE method(freq_update_core()) + */ + if (emif_sdram_type() == EMIF_SDRAM_TYPE_LPDDR2) + do_setup_dpll((*prcm)->cm_clkmode_dpll_core, params, + DPLL_NO_LOCK, "core"); + else + do_setup_dpll((*prcm)->cm_clkmode_dpll_core, params, + DPLL_LOCK, "core"); + /* Set the ratios for CORE_CLK, L3_CLK, L4_CLK */ + temp = (CLKSEL_CORE_X2_DIV_1 << CLKSEL_CORE_SHIFT) | + (CLKSEL_L3_CORE_DIV_2 << CLKSEL_L3_SHIFT) | + (CLKSEL_L4_L3_DIV_2 << CLKSEL_L4_SHIFT); + writel(temp, (*prcm)->cm_clksel_core); + debug("Core DPLL configured\n"); + + /* lock PER dpll */ + params = get_per_dpll_params(*dplls_data); + do_setup_dpll((*prcm)->cm_clkmode_dpll_per, + params, DPLL_LOCK, "per"); + debug("PER DPLL locked\n"); + + /* MPU dpll */ + configure_mpu_dpll(); + +#if defined(CONFIG_USB_EHCI_OMAP) || defined(CONFIG_USB_XHCI_OMAP) + setup_usb_dpll(); +#endif + params = get_ddr_dpll_params(*dplls_data); + do_setup_dpll((*prcm)->cm_clkmode_dpll_ddrphy, + params, DPLL_LOCK, "ddr"); + +#ifdef CONFIG_DRIVER_TI_CPSW + params = get_gmac_dpll_params(*dplls_data); + do_setup_dpll((*prcm)->cm_clkmode_dpll_gmac, params, + DPLL_LOCK, "gmac"); +#endif +} + +u32 get_offset_code(u32 volt_offset, struct pmic_data *pmic) +{ + u32 offset_code; + + volt_offset -= pmic->base_offset; + + offset_code = (volt_offset + pmic->step - 1) / pmic->step; + + /* + * Offset codes 1-6 all give the base voltage in Palmas + * Offset code 0 switches OFF the SMPS + */ + return offset_code + pmic->start_code; +} + +void do_scale_vcore(u32 vcore_reg, u32 volt_mv, struct pmic_data *pmic) +{ + u32 offset_code; + u32 offset = volt_mv; + int ret = 0; + + if (!volt_mv) + return; + + pmic->pmic_bus_init(); + /* See if we can first get the GPIO if needed */ + if (pmic->gpio_en) + ret = gpio_request(pmic->gpio, "PMIC_GPIO"); + + if (ret < 0) { + printf("%s: gpio %d request failed %d\n", __func__, + pmic->gpio, ret); + return; + } + + /* Pull the GPIO low to select SET0 register, while we program SET1 */ + if (pmic->gpio_en) + gpio_direction_output(pmic->gpio, 0); + + /* convert to uV for better accuracy in the calculations */ + offset *= 1000; + + offset_code = get_offset_code(offset, pmic); + + debug("do_scale_vcore: volt - %d offset_code - 0x%x\n", volt_mv, + offset_code); + + if (pmic->pmic_write(pmic->i2c_slave_addr, vcore_reg, offset_code)) + printf("Scaling voltage failed for 0x%x\n", vcore_reg); + + if (pmic->gpio_en) + gpio_direction_output(pmic->gpio, 1); +} + +static u32 optimize_vcore_voltage(struct volts const *v) +{ + u32 val; + if (!v->value) + return 0; + if (!v->efuse.reg) + return v->value; + + switch (v->efuse.reg_bits) { + case 16: + val = readw(v->efuse.reg); + break; + case 32: + val = readl(v->efuse.reg); + break; + default: + printf("Error: efuse 0x%08x bits=%d unknown\n", + v->efuse.reg, v->efuse.reg_bits); + return v->value; + } + + if (!val) { + printf("Error: efuse 0x%08x bits=%d val=0, using %d\n", + v->efuse.reg, v->efuse.reg_bits, v->value); + return v->value; + } + + debug("%s:efuse 0x%08x bits=%d Vnom=%d, using efuse value %d\n", + __func__, v->efuse.reg, v->efuse.reg_bits, v->value, val); + return val; +} + +/* + * Setup the voltages for vdd_mpu, vdd_core, and vdd_iva + * We set the maximum voltages allowed here because Smart-Reflex is not + * enabled in bootloader. Voltage initialization in the kernel will set + * these to the nominal values after enabling Smart-Reflex + */ +void scale_vcores(struct vcores_data const *vcores) +{ + u32 val; + + val = optimize_vcore_voltage(&vcores->core); + do_scale_vcore(vcores->core.addr, val, vcores->core.pmic); + + val = optimize_vcore_voltage(&vcores->mpu); + do_scale_vcore(vcores->mpu.addr, val, vcores->mpu.pmic); + + /* Configure MPU ABB LDO after scale */ + abb_setup((*ctrl)->control_std_fuse_opp_vdd_mpu_2, + (*ctrl)->control_wkup_ldovbb_mpu_voltage_ctrl, + (*prcm)->prm_abbldo_mpu_setup, + (*prcm)->prm_abbldo_mpu_ctrl, + (*prcm)->prm_irqstatus_mpu_2, + OMAP_ABB_MPU_TXDONE_MASK, + OMAP_ABB_FAST_OPP); + + val = optimize_vcore_voltage(&vcores->mm); + do_scale_vcore(vcores->mm.addr, val, vcores->mm.pmic); + + val = optimize_vcore_voltage(&vcores->gpu); + do_scale_vcore(vcores->gpu.addr, val, vcores->gpu.pmic); + + val = optimize_vcore_voltage(&vcores->eve); + do_scale_vcore(vcores->eve.addr, val, vcores->eve.pmic); + + val = optimize_vcore_voltage(&vcores->iva); + do_scale_vcore(vcores->iva.addr, val, vcores->iva.pmic); +} + +static inline void enable_clock_domain(u32 const clkctrl_reg, u32 enable_mode) +{ + clrsetbits_le32(clkctrl_reg, CD_CLKCTRL_CLKTRCTRL_MASK, + enable_mode << CD_CLKCTRL_CLKTRCTRL_SHIFT); + debug("Enable clock domain - %x\n", clkctrl_reg); +} + +static inline void wait_for_clk_enable(u32 clkctrl_addr) +{ + u32 clkctrl, idlest = MODULE_CLKCTRL_IDLEST_DISABLED; + u32 bound = LDELAY; + + while ((idlest == MODULE_CLKCTRL_IDLEST_DISABLED) || + (idlest == MODULE_CLKCTRL_IDLEST_TRANSITIONING)) { + + clkctrl = readl(clkctrl_addr); + idlest = (clkctrl & MODULE_CLKCTRL_IDLEST_MASK) >> + MODULE_CLKCTRL_IDLEST_SHIFT; + if (--bound == 0) { + printf("Clock enable failed for 0x%x idlest 0x%x\n", + clkctrl_addr, clkctrl); + return; + } + } +} + +static inline void enable_clock_module(u32 const clkctrl_addr, u32 enable_mode, + u32 wait_for_enable) +{ + clrsetbits_le32(clkctrl_addr, MODULE_CLKCTRL_MODULEMODE_MASK, + enable_mode << MODULE_CLKCTRL_MODULEMODE_SHIFT); + debug("Enable clock module - %x\n", clkctrl_addr); + if (wait_for_enable) + wait_for_clk_enable(clkctrl_addr); +} + +void freq_update_core(void) +{ + u32 freq_config1 = 0; + const struct dpll_params *core_dpll_params; + u32 omap_rev = omap_revision(); + + core_dpll_params = get_core_dpll_params(*dplls_data); + /* Put EMIF clock domain in sw wakeup mode */ + enable_clock_domain((*prcm)->cm_memif_clkstctrl, + CD_CLKCTRL_CLKTRCTRL_SW_WKUP); + wait_for_clk_enable((*prcm)->cm_memif_emif_1_clkctrl); + wait_for_clk_enable((*prcm)->cm_memif_emif_2_clkctrl); + + freq_config1 = SHADOW_FREQ_CONFIG1_FREQ_UPDATE_MASK | + SHADOW_FREQ_CONFIG1_DLL_RESET_MASK; + + freq_config1 |= (DPLL_EN_LOCK << SHADOW_FREQ_CONFIG1_DPLL_EN_SHIFT) & + SHADOW_FREQ_CONFIG1_DPLL_EN_MASK; + + freq_config1 |= (core_dpll_params->m2 << + SHADOW_FREQ_CONFIG1_M2_DIV_SHIFT) & + SHADOW_FREQ_CONFIG1_M2_DIV_MASK; + + writel(freq_config1, (*prcm)->cm_shadow_freq_config1); + if (!wait_on_value(SHADOW_FREQ_CONFIG1_FREQ_UPDATE_MASK, 0, + (u32 *) (*prcm)->cm_shadow_freq_config1, LDELAY)) { + puts("FREQ UPDATE procedure failed!!"); + hang(); + } + + /* + * Putting EMIF in HW_AUTO is seen to be causing issues with + * EMIF clocks and the master DLL. Keep EMIF in SW_WKUP + * in OMAP5430 ES1.0 silicon + */ + if (omap_rev != OMAP5430_ES1_0) { + /* Put EMIF clock domain back in hw auto mode */ + enable_clock_domain((*prcm)->cm_memif_clkstctrl, + CD_CLKCTRL_CLKTRCTRL_HW_AUTO); + wait_for_clk_enable((*prcm)->cm_memif_emif_1_clkctrl); + wait_for_clk_enable((*prcm)->cm_memif_emif_2_clkctrl); + } +} + +void bypass_dpll(u32 const base) +{ + do_bypass_dpll(base); + wait_for_bypass(base); +} + +void lock_dpll(u32 const base) +{ + do_lock_dpll(base); + wait_for_lock(base); +} + +void setup_clocks_for_console(void) +{ + /* Do not add any spl_debug prints in this function */ + clrsetbits_le32((*prcm)->cm_l4per_clkstctrl, CD_CLKCTRL_CLKTRCTRL_MASK, + CD_CLKCTRL_CLKTRCTRL_SW_WKUP << + CD_CLKCTRL_CLKTRCTRL_SHIFT); + + /* Enable all UARTs - console will be on one of them */ + clrsetbits_le32((*prcm)->cm_l4per_uart1_clkctrl, + MODULE_CLKCTRL_MODULEMODE_MASK, + MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN << + MODULE_CLKCTRL_MODULEMODE_SHIFT); + + clrsetbits_le32((*prcm)->cm_l4per_uart2_clkctrl, + MODULE_CLKCTRL_MODULEMODE_MASK, + MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN << + MODULE_CLKCTRL_MODULEMODE_SHIFT); + + clrsetbits_le32((*prcm)->cm_l4per_uart3_clkctrl, + MODULE_CLKCTRL_MODULEMODE_MASK, + MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN << + MODULE_CLKCTRL_MODULEMODE_SHIFT); + + clrsetbits_le32((*prcm)->cm_l4per_uart4_clkctrl, + MODULE_CLKCTRL_MODULEMODE_MASK, + MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN << + MODULE_CLKCTRL_MODULEMODE_SHIFT); + + clrsetbits_le32((*prcm)->cm_l4per_clkstctrl, CD_CLKCTRL_CLKTRCTRL_MASK, + CD_CLKCTRL_CLKTRCTRL_HW_AUTO << + CD_CLKCTRL_CLKTRCTRL_SHIFT); +} + +void do_enable_clocks(u32 const *clk_domains, + u32 const *clk_modules_hw_auto, + u32 const *clk_modules_explicit_en, + u8 wait_for_enable) +{ + u32 i, max = 100; + + /* Put the clock domains in SW_WKUP mode */ + for (i = 0; (i < max) && clk_domains[i]; i++) { + enable_clock_domain(clk_domains[i], + CD_CLKCTRL_CLKTRCTRL_SW_WKUP); + } + + /* Clock modules that need to be put in HW_AUTO */ + for (i = 0; (i < max) && clk_modules_hw_auto[i]; i++) { + enable_clock_module(clk_modules_hw_auto[i], + MODULE_CLKCTRL_MODULEMODE_HW_AUTO, + wait_for_enable); + }; + + /* Clock modules that need to be put in SW_EXPLICIT_EN mode */ + for (i = 0; (i < max) && clk_modules_explicit_en[i]; i++) { + enable_clock_module(clk_modules_explicit_en[i], + MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN, + wait_for_enable); + }; + + /* Put the clock domains in HW_AUTO mode now */ + for (i = 0; (i < max) && clk_domains[i]; i++) { + enable_clock_domain(clk_domains[i], + CD_CLKCTRL_CLKTRCTRL_HW_AUTO); + } +} + +void prcm_init(void) +{ + switch (omap_hw_init_context()) { + case OMAP_INIT_CONTEXT_SPL: + case OMAP_INIT_CONTEXT_UBOOT_FROM_NOR: + case OMAP_INIT_CONTEXT_UBOOT_AFTER_CH: + enable_basic_clocks(); + timer_init(); + scale_vcores(*omap_vcores); + setup_dplls(); + setup_warmreset_time(); + break; + default: + break; + } + + if (OMAP_INIT_CONTEXT_SPL != omap_hw_init_context()) + enable_basic_uboot_clocks(); +} + +void gpi2c_init(void) +{ + static int gpi2c = 1; + + if (gpi2c) { + i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED, + CONFIG_SYS_OMAP24_I2C_SLAVE); + gpi2c = 0; + } +} diff --git a/roms/u-boot/arch/arm/cpu/armv7/omap-common/emif-common.c b/roms/u-boot/arch/arm/cpu/armv7/omap-common/emif-common.c new file mode 100644 index 00000000..429c4bec --- /dev/null +++ b/roms/u-boot/arch/arm/cpu/armv7/omap-common/emif-common.c @@ -0,0 +1,1392 @@ +/* + * EMIF programming + * + * (C) Copyright 2010 + * Texas Instruments, <www.ti.com> + * + * Aneesh V <aneesh@ti.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/emif.h> +#include <asm/arch/clock.h> +#include <asm/arch/sys_proto.h> +#include <asm/omap_common.h> +#include <asm/utils.h> +#include <linux/compiler.h> + +static int emif1_enabled = -1, emif2_enabled = -1; + +void set_lpmode_selfrefresh(u32 base) +{ + struct emif_reg_struct *emif = (struct emif_reg_struct *)base; + u32 reg; + + reg = readl(&emif->emif_pwr_mgmt_ctrl); + reg &= ~EMIF_REG_LP_MODE_MASK; + reg |= LP_MODE_SELF_REFRESH << EMIF_REG_LP_MODE_SHIFT; + reg &= ~EMIF_REG_SR_TIM_MASK; + writel(reg, &emif->emif_pwr_mgmt_ctrl); + + /* dummy read for the new SR_TIM to be loaded */ + readl(&emif->emif_pwr_mgmt_ctrl); +} + +void force_emif_self_refresh() +{ + set_lpmode_selfrefresh(EMIF1_BASE); + set_lpmode_selfrefresh(EMIF2_BASE); +} + +inline u32 emif_num(u32 base) +{ + if (base == EMIF1_BASE) + return 1; + else if (base == EMIF2_BASE) + return 2; + else + return 0; +} + +static inline u32 get_mr(u32 base, u32 cs, u32 mr_addr) +{ + u32 mr; + struct emif_reg_struct *emif = (struct emif_reg_struct *)base; + + mr_addr |= cs << EMIF_REG_CS_SHIFT; + writel(mr_addr, &emif->emif_lpddr2_mode_reg_cfg); + if (omap_revision() == OMAP4430_ES2_0) + mr = readl(&emif->emif_lpddr2_mode_reg_data_es2); + else + mr = readl(&emif->emif_lpddr2_mode_reg_data); + debug("get_mr: EMIF%d cs %d mr %08x val 0x%x\n", emif_num(base), + cs, mr_addr, mr); + if (((mr & 0x0000ff00) >> 8) == (mr & 0xff) && + ((mr & 0x00ff0000) >> 16) == (mr & 0xff) && + ((mr & 0xff000000) >> 24) == (mr & 0xff)) + return mr & 0xff; + else + return mr; +} + +static inline void set_mr(u32 base, u32 cs, u32 mr_addr, u32 mr_val) +{ + struct emif_reg_struct *emif = (struct emif_reg_struct *)base; + + mr_addr |= cs << EMIF_REG_CS_SHIFT; + writel(mr_addr, &emif->emif_lpddr2_mode_reg_cfg); + writel(mr_val, &emif->emif_lpddr2_mode_reg_data); +} + +void emif_reset_phy(u32 base) +{ + struct emif_reg_struct *emif = (struct emif_reg_struct *)base; + u32 iodft; + + iodft = readl(&emif->emif_iodft_tlgc); + iodft |= EMIF_REG_RESET_PHY_MASK; + writel(iodft, &emif->emif_iodft_tlgc); +} + +static void do_lpddr2_init(u32 base, u32 cs) +{ + u32 mr_addr; + const struct lpddr2_mr_regs *mr_regs; + + get_lpddr2_mr_regs(&mr_regs); + /* Wait till device auto initialization is complete */ + while (get_mr(base, cs, LPDDR2_MR0) & LPDDR2_MR0_DAI_MASK) + ; + set_mr(base, cs, LPDDR2_MR10, mr_regs->mr10); + /* + * tZQINIT = 1 us + * Enough loops assuming a maximum of 2GHz + */ + + sdelay(2000); + + set_mr(base, cs, LPDDR2_MR1, mr_regs->mr1); + set_mr(base, cs, LPDDR2_MR16, mr_regs->mr16); + + /* + * Enable refresh along with writing MR2 + * Encoding of RL in MR2 is (RL - 2) + */ + mr_addr = LPDDR2_MR2 | EMIF_REG_REFRESH_EN_MASK; + set_mr(base, cs, mr_addr, mr_regs->mr2); + + if (mr_regs->mr3 > 0) + set_mr(base, cs, LPDDR2_MR3, mr_regs->mr3); +} + +static void lpddr2_init(u32 base, const struct emif_regs *regs) +{ + struct emif_reg_struct *emif = (struct emif_reg_struct *)base; + + /* Not NVM */ + clrbits_le32(&emif->emif_lpddr2_nvm_config, EMIF_REG_CS1NVMEN_MASK); + + /* + * Keep REG_INITREF_DIS = 1 to prevent re-initialization of SDRAM + * when EMIF_SDRAM_CONFIG register is written + */ + setbits_le32(&emif->emif_sdram_ref_ctrl, EMIF_REG_INITREF_DIS_MASK); + + /* + * Set the SDRAM_CONFIG and PHY_CTRL for the + * un-locked frequency & default RL + */ + writel(regs->sdram_config_init, &emif->emif_sdram_config); + writel(regs->emif_ddr_phy_ctlr_1_init, &emif->emif_ddr_phy_ctrl_1); + + do_ext_phy_settings(base, regs); + + do_lpddr2_init(base, CS0); + if (regs->sdram_config & EMIF_REG_EBANK_MASK) + do_lpddr2_init(base, CS1); + + writel(regs->sdram_config, &emif->emif_sdram_config); + writel(regs->emif_ddr_phy_ctlr_1, &emif->emif_ddr_phy_ctrl_1); + + /* Enable refresh now */ + clrbits_le32(&emif->emif_sdram_ref_ctrl, EMIF_REG_INITREF_DIS_MASK); + + } + +__weak void do_ext_phy_settings(u32 base, const struct emif_regs *regs) +{ +} + +void emif_update_timings(u32 base, const struct emif_regs *regs) +{ + struct emif_reg_struct *emif = (struct emif_reg_struct *)base; + + writel(regs->ref_ctrl, &emif->emif_sdram_ref_ctrl_shdw); + writel(regs->sdram_tim1, &emif->emif_sdram_tim_1_shdw); + writel(regs->sdram_tim2, &emif->emif_sdram_tim_2_shdw); + writel(regs->sdram_tim3, &emif->emif_sdram_tim_3_shdw); + if (omap_revision() == OMAP4430_ES1_0) { + /* ES1 bug EMIF should be in force idle during freq_update */ + writel(0, &emif->emif_pwr_mgmt_ctrl); + } else { + writel(EMIF_PWR_MGMT_CTRL, &emif->emif_pwr_mgmt_ctrl); + writel(EMIF_PWR_MGMT_CTRL_SHDW, &emif->emif_pwr_mgmt_ctrl_shdw); + } + writel(regs->read_idle_ctrl, &emif->emif_read_idlectrl_shdw); + writel(regs->zq_config, &emif->emif_zq_config); + writel(regs->temp_alert_config, &emif->emif_temp_alert_config); + writel(regs->emif_ddr_phy_ctlr_1, &emif->emif_ddr_phy_ctrl_1_shdw); + + if ((omap_revision() >= OMAP5430_ES1_0) || is_dra7xx()) { + writel(EMIF_L3_CONFIG_VAL_SYS_10_MPU_5_LL_0, + &emif->emif_l3_config); + } else if (omap_revision() >= OMAP4460_ES1_0) { + writel(EMIF_L3_CONFIG_VAL_SYS_10_MPU_3_LL_0, + &emif->emif_l3_config); + } else { + writel(EMIF_L3_CONFIG_VAL_SYS_10_LL_0, + &emif->emif_l3_config); + } +} + +static void omap5_ddr3_leveling(u32 base, const struct emif_regs *regs) +{ + struct emif_reg_struct *emif = (struct emif_reg_struct *)base; + + /* keep sdram in self-refresh */ + writel(((LP_MODE_SELF_REFRESH << EMIF_REG_LP_MODE_SHIFT) + & EMIF_REG_LP_MODE_MASK), &emif->emif_pwr_mgmt_ctrl); + __udelay(130); + + /* + * Set invert_clkout (if activated)--DDR_PHYCTRL_1 + * Invert clock adds an additional half cycle delay on the + * command interface. The additional half cycle, is usually + * meant to enable leveling in the situation that DQS is later + * than CK on the board.It also helps provide some additional + * margin for leveling. + */ + writel(regs->emif_ddr_phy_ctlr_1, + &emif->emif_ddr_phy_ctrl_1); + + writel(regs->emif_ddr_phy_ctlr_1, + &emif->emif_ddr_phy_ctrl_1_shdw); + __udelay(130); + + writel(((LP_MODE_DISABLE << EMIF_REG_LP_MODE_SHIFT) + & EMIF_REG_LP_MODE_MASK), &emif->emif_pwr_mgmt_ctrl); + + /* Launch Full leveling */ + writel(DDR3_FULL_LVL, &emif->emif_rd_wr_lvl_ctl); + + /* Wait till full leveling is complete */ + readl(&emif->emif_rd_wr_lvl_ctl); + __udelay(130); + + /* Read data eye leveling no of samples */ + config_data_eye_leveling_samples(base); + + /* + * Launch 8 incremental WR_LVL- to compensate for + * PHY limitation. + */ + writel(0x2 << EMIF_REG_WRLVLINC_INT_SHIFT, + &emif->emif_rd_wr_lvl_ctl); + + __udelay(130); + + /* Launch Incremental leveling */ + writel(DDR3_INC_LVL, &emif->emif_rd_wr_lvl_ctl); + __udelay(130); +} + +static void dra7_ddr3_leveling(u32 base, const struct emif_regs *regs) +{ + struct emif_reg_struct *emif = (struct emif_reg_struct *)base; + + u32 fifo_reg; + + fifo_reg = readl(&emif->emif_ddr_fifo_misaligned_clear_1); + writel(fifo_reg | 0x00000100, + &emif->emif_ddr_fifo_misaligned_clear_1); + + fifo_reg = readl(&emif->emif_ddr_fifo_misaligned_clear_2); + writel(fifo_reg | 0x00000100, + &emif->emif_ddr_fifo_misaligned_clear_2); + + /* Launch Full leveling */ + writel(DDR3_FULL_LVL, &emif->emif_rd_wr_lvl_ctl); + + /* Wait till full leveling is complete */ + readl(&emif->emif_rd_wr_lvl_ctl); + __udelay(130); + + /* Read data eye leveling no of samples */ + config_data_eye_leveling_samples(base); + + /* + * Disable leveling. This is because if leveling is kept + * enabled, then PHY triggers a false leveling during + * EMIF-idle scenario which results in wrong delay + * values getting updated. After this the EMIF becomes + * unaccessible. So disable it after the first time + */ + writel(0x0, &emif->emif_rd_wr_lvl_rmp_ctl); +} + +static void ddr3_leveling(u32 base, const struct emif_regs *regs) +{ + if (is_omap54xx()) + omap5_ddr3_leveling(base, regs); + else + dra7_ddr3_leveling(base, regs); +} + +static void ddr3_init(u32 base, const struct emif_regs *regs) +{ + struct emif_reg_struct *emif = (struct emif_reg_struct *)base; + + /* + * Set SDRAM_CONFIG and PHY control registers to locked frequency + * and RL =7. As the default values of the Mode Registers are not + * defined, contents of mode Registers must be fully initialized. + * H/W takes care of this initialization + */ + writel(regs->emif_ddr_phy_ctlr_1_init, &emif->emif_ddr_phy_ctrl_1); + + /* Update timing registers */ + writel(regs->sdram_tim1, &emif->emif_sdram_tim_1); + writel(regs->sdram_tim2, &emif->emif_sdram_tim_2); + writel(regs->sdram_tim3, &emif->emif_sdram_tim_3); + + writel(regs->ref_ctrl, &emif->emif_sdram_ref_ctrl); + writel(regs->read_idle_ctrl, &emif->emif_read_idlectrl); + + /* + * The same sequence should work on OMAP5432 as well. But strange that + * it is not working + */ + if (is_dra7xx()) { + do_ext_phy_settings(base, regs); + writel(regs->sdram_config2, &emif->emif_lpddr2_nvm_config); + writel(regs->sdram_config_init, &emif->emif_sdram_config); + } else { + writel(regs->sdram_config2, &emif->emif_lpddr2_nvm_config); + writel(regs->sdram_config_init, &emif->emif_sdram_config); + do_ext_phy_settings(base, regs); + } + + /* enable leveling */ + writel(regs->emif_rd_wr_lvl_rmp_ctl, &emif->emif_rd_wr_lvl_rmp_ctl); + + ddr3_leveling(base, regs); +} + +#ifndef CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS +#define print_timing_reg(reg) debug(#reg" - 0x%08x\n", (reg)) + +/* + * Organization and refresh requirements for LPDDR2 devices of different + * types and densities. Derived from JESD209-2 section 2.4 + */ +const struct lpddr2_addressing addressing_table[] = { + /* Banks tREFIx10 rowx32,rowx16 colx32,colx16 density */ + {BANKS4, T_REFI_15_6, {ROW_12, ROW_12}, {COL_7, COL_8} },/*64M */ + {BANKS4, T_REFI_15_6, {ROW_12, ROW_12}, {COL_8, COL_9} },/*128M */ + {BANKS4, T_REFI_7_8, {ROW_13, ROW_13}, {COL_8, COL_9} },/*256M */ + {BANKS4, T_REFI_7_8, {ROW_13, ROW_13}, {COL_9, COL_10} },/*512M */ + {BANKS8, T_REFI_7_8, {ROW_13, ROW_13}, {COL_9, COL_10} },/*1GS4 */ + {BANKS8, T_REFI_3_9, {ROW_14, ROW_14}, {COL_9, COL_10} },/*2GS4 */ + {BANKS8, T_REFI_3_9, {ROW_14, ROW_14}, {COL_10, COL_11} },/*4G */ + {BANKS8, T_REFI_3_9, {ROW_15, ROW_15}, {COL_10, COL_11} },/*8G */ + {BANKS4, T_REFI_7_8, {ROW_14, ROW_14}, {COL_9, COL_10} },/*1GS2 */ + {BANKS4, T_REFI_3_9, {ROW_15, ROW_15}, {COL_9, COL_10} },/*2GS2 */ +}; + +static const u32 lpddr2_density_2_size_in_mbytes[] = { + 8, /* 64Mb */ + 16, /* 128Mb */ + 32, /* 256Mb */ + 64, /* 512Mb */ + 128, /* 1Gb */ + 256, /* 2Gb */ + 512, /* 4Gb */ + 1024, /* 8Gb */ + 2048, /* 16Gb */ + 4096 /* 32Gb */ +}; + +/* + * Calculate the period of DDR clock from frequency value and set the + * denominator and numerator in global variables for easy access later + */ +static void set_ddr_clk_period(u32 freq) +{ + /* + * period = 1/freq + * period_in_ns = 10^9/freq + */ + *T_num = 1000000000; + *T_den = freq; + cancel_out(T_num, T_den, 200); + +} + +/* + * Convert time in nano seconds to number of cycles of DDR clock + */ +static inline u32 ns_2_cycles(u32 ns) +{ + return ((ns * (*T_den)) + (*T_num) - 1) / (*T_num); +} + +/* + * ns_2_cycles with the difference that the time passed is 2 times the actual + * value(to avoid fractions). The cycles returned is for the original value of + * the timing parameter + */ +static inline u32 ns_x2_2_cycles(u32 ns) +{ + return ((ns * (*T_den)) + (*T_num) * 2 - 1) / ((*T_num) * 2); +} + +/* + * Find addressing table index based on the device's type(S2 or S4) and + * density + */ +s8 addressing_table_index(u8 type, u8 density, u8 width) +{ + u8 index; + if ((density > LPDDR2_DENSITY_8Gb) || (width == LPDDR2_IO_WIDTH_8)) + return -1; + + /* + * Look at the way ADDR_TABLE_INDEX* values have been defined + * in emif.h compared to LPDDR2_DENSITY_* values + * The table is layed out in the increasing order of density + * (ignoring type). The exceptions 1GS2 and 2GS2 have been placed + * at the end + */ + if ((type == LPDDR2_TYPE_S2) && (density == LPDDR2_DENSITY_1Gb)) + index = ADDR_TABLE_INDEX1GS2; + else if ((type == LPDDR2_TYPE_S2) && (density == LPDDR2_DENSITY_2Gb)) + index = ADDR_TABLE_INDEX2GS2; + else + index = density; + + debug("emif: addressing table index %d\n", index); + + return index; +} + +/* + * Find the the right timing table from the array of timing + * tables of the device using DDR clock frequency + */ +static const struct lpddr2_ac_timings *get_timings_table(const struct + lpddr2_ac_timings const *const *device_timings, + u32 freq) +{ + u32 i, temp, freq_nearest; + const struct lpddr2_ac_timings *timings = 0; + + emif_assert(freq <= MAX_LPDDR2_FREQ); + emif_assert(device_timings); + + /* + * Start with the maximum allowed frequency - that is always safe + */ + freq_nearest = MAX_LPDDR2_FREQ; + /* + * Find the timings table that has the max frequency value: + * i. Above or equal to the DDR frequency - safe + * ii. The lowest that satisfies condition (i) - optimal + */ + for (i = 0; (i < MAX_NUM_SPEEDBINS) && device_timings[i]; i++) { + temp = device_timings[i]->max_freq; + if ((temp >= freq) && (temp <= freq_nearest)) { + freq_nearest = temp; + timings = device_timings[i]; + } + } + debug("emif: timings table: %d\n", freq_nearest); + return timings; +} + +/* + * Finds the value of emif_sdram_config_reg + * All parameters are programmed based on the device on CS0. + * If there is a device on CS1, it will be same as that on CS0 or + * it will be NVM. We don't support NVM yet. + * If cs1_device pointer is NULL it is assumed that there is no device + * on CS1 + */ +static u32 get_sdram_config_reg(const struct lpddr2_device_details *cs0_device, + const struct lpddr2_device_details *cs1_device, + const struct lpddr2_addressing *addressing, + u8 RL) +{ + u32 config_reg = 0; + + config_reg |= (cs0_device->type + 4) << EMIF_REG_SDRAM_TYPE_SHIFT; + config_reg |= EMIF_INTERLEAVING_POLICY_MAX_INTERLEAVING << + EMIF_REG_IBANK_POS_SHIFT; + + config_reg |= cs0_device->io_width << EMIF_REG_NARROW_MODE_SHIFT; + + config_reg |= RL << EMIF_REG_CL_SHIFT; + + config_reg |= addressing->row_sz[cs0_device->io_width] << + EMIF_REG_ROWSIZE_SHIFT; + + config_reg |= addressing->num_banks << EMIF_REG_IBANK_SHIFT; + + config_reg |= (cs1_device ? EBANK_CS1_EN : EBANK_CS1_DIS) << + EMIF_REG_EBANK_SHIFT; + + config_reg |= addressing->col_sz[cs0_device->io_width] << + EMIF_REG_PAGESIZE_SHIFT; + + return config_reg; +} + +static u32 get_sdram_ref_ctrl(u32 freq, + const struct lpddr2_addressing *addressing) +{ + u32 ref_ctrl = 0, val = 0, freq_khz; + freq_khz = freq / 1000; + /* + * refresh rate to be set is 'tREFI * freq in MHz + * division by 10000 to account for khz and x10 in t_REFI_us_x10 + */ + val = addressing->t_REFI_us_x10 * freq_khz / 10000; + ref_ctrl |= val << EMIF_REG_REFRESH_RATE_SHIFT; + + return ref_ctrl; +} + +static u32 get_sdram_tim_1_reg(const struct lpddr2_ac_timings *timings, + const struct lpddr2_min_tck *min_tck, + const struct lpddr2_addressing *addressing) +{ + u32 tim1 = 0, val = 0; + val = max(min_tck->tWTR, ns_x2_2_cycles(timings->tWTRx2)) - 1; + tim1 |= val << EMIF_REG_T_WTR_SHIFT; + + if (addressing->num_banks == BANKS8) + val = (timings->tFAW * (*T_den) + 4 * (*T_num) - 1) / + (4 * (*T_num)) - 1; + else + val = max(min_tck->tRRD, ns_2_cycles(timings->tRRD)) - 1; + + tim1 |= val << EMIF_REG_T_RRD_SHIFT; + + val = ns_2_cycles(timings->tRASmin + timings->tRPab) - 1; + tim1 |= val << EMIF_REG_T_RC_SHIFT; + + val = max(min_tck->tRAS_MIN, ns_2_cycles(timings->tRASmin)) - 1; + tim1 |= val << EMIF_REG_T_RAS_SHIFT; + + val = max(min_tck->tWR, ns_2_cycles(timings->tWR)) - 1; + tim1 |= val << EMIF_REG_T_WR_SHIFT; + + val = max(min_tck->tRCD, ns_2_cycles(timings->tRCD)) - 1; + tim1 |= val << EMIF_REG_T_RCD_SHIFT; + + val = max(min_tck->tRP_AB, ns_2_cycles(timings->tRPab)) - 1; + tim1 |= val << EMIF_REG_T_RP_SHIFT; + + return tim1; +} + +static u32 get_sdram_tim_2_reg(const struct lpddr2_ac_timings *timings, + const struct lpddr2_min_tck *min_tck) +{ + u32 tim2 = 0, val = 0; + val = max(min_tck->tCKE, timings->tCKE) - 1; + tim2 |= val << EMIF_REG_T_CKE_SHIFT; + + val = max(min_tck->tRTP, ns_x2_2_cycles(timings->tRTPx2)) - 1; + tim2 |= val << EMIF_REG_T_RTP_SHIFT; + + /* + * tXSRD = tRFCab + 10 ns. XSRD and XSNR should have the + * same value + */ + val = ns_2_cycles(timings->tXSR) - 1; + tim2 |= val << EMIF_REG_T_XSRD_SHIFT; + tim2 |= val << EMIF_REG_T_XSNR_SHIFT; + + val = max(min_tck->tXP, ns_x2_2_cycles(timings->tXPx2)) - 1; + tim2 |= val << EMIF_REG_T_XP_SHIFT; + + return tim2; +} + +static u32 get_sdram_tim_3_reg(const struct lpddr2_ac_timings *timings, + const struct lpddr2_min_tck *min_tck, + const struct lpddr2_addressing *addressing) +{ + u32 tim3 = 0, val = 0; + val = min(timings->tRASmax * 10 / addressing->t_REFI_us_x10 - 1, 0xF); + tim3 |= val << EMIF_REG_T_RAS_MAX_SHIFT; + + val = ns_2_cycles(timings->tRFCab) - 1; + tim3 |= val << EMIF_REG_T_RFC_SHIFT; + + val = ns_x2_2_cycles(timings->tDQSCKMAXx2) - 1; + tim3 |= val << EMIF_REG_T_TDQSCKMAX_SHIFT; + + val = ns_2_cycles(timings->tZQCS) - 1; + tim3 |= val << EMIF_REG_ZQ_ZQCS_SHIFT; + + val = max(min_tck->tCKESR, ns_2_cycles(timings->tCKESR)) - 1; + tim3 |= val << EMIF_REG_T_CKESR_SHIFT; + + return tim3; +} + +static u32 get_zq_config_reg(const struct lpddr2_device_details *cs1_device, + const struct lpddr2_addressing *addressing, + u8 volt_ramp) +{ + u32 zq = 0, val = 0; + if (volt_ramp) + val = + EMIF_ZQCS_INTERVAL_DVFS_IN_US * 10 / + addressing->t_REFI_us_x10; + else + val = + EMIF_ZQCS_INTERVAL_NORMAL_IN_US * 10 / + addressing->t_REFI_us_x10; + zq |= val << EMIF_REG_ZQ_REFINTERVAL_SHIFT; + + zq |= (REG_ZQ_ZQCL_MULT - 1) << EMIF_REG_ZQ_ZQCL_MULT_SHIFT; + + zq |= (REG_ZQ_ZQINIT_MULT - 1) << EMIF_REG_ZQ_ZQINIT_MULT_SHIFT; + + zq |= REG_ZQ_SFEXITEN_ENABLE << EMIF_REG_ZQ_SFEXITEN_SHIFT; + + /* + * Assuming that two chipselects have a single calibration resistor + * If there are indeed two calibration resistors, then this flag should + * be enabled to take advantage of dual calibration feature. + * This data should ideally come from board files. But considering + * that none of the boards today have calibration resistors per CS, + * it would be an unnecessary overhead. + */ + zq |= REG_ZQ_DUALCALEN_DISABLE << EMIF_REG_ZQ_DUALCALEN_SHIFT; + + zq |= REG_ZQ_CS0EN_ENABLE << EMIF_REG_ZQ_CS0EN_SHIFT; + + zq |= (cs1_device ? 1 : 0) << EMIF_REG_ZQ_CS1EN_SHIFT; + + return zq; +} + +static u32 get_temp_alert_config(const struct lpddr2_device_details *cs1_device, + const struct lpddr2_addressing *addressing, + u8 is_derated) +{ + u32 alert = 0, interval; + interval = + TEMP_ALERT_POLL_INTERVAL_MS * 10000 / addressing->t_REFI_us_x10; + if (is_derated) + interval *= 4; + alert |= interval << EMIF_REG_TA_REFINTERVAL_SHIFT; + + alert |= TEMP_ALERT_CONFIG_DEVCT_1 << EMIF_REG_TA_DEVCNT_SHIFT; + + alert |= TEMP_ALERT_CONFIG_DEVWDT_32 << EMIF_REG_TA_DEVWDT_SHIFT; + + alert |= 1 << EMIF_REG_TA_SFEXITEN_SHIFT; + + alert |= 1 << EMIF_REG_TA_CS0EN_SHIFT; + + alert |= (cs1_device ? 1 : 0) << EMIF_REG_TA_CS1EN_SHIFT; + + return alert; +} + +static u32 get_read_idle_ctrl_reg(u8 volt_ramp) +{ + u32 idle = 0, val = 0; + if (volt_ramp) + val = ns_2_cycles(READ_IDLE_INTERVAL_DVFS) / 64 - 1; + else + /*Maximum value in normal conditions - suggested by hw team */ + val = 0x1FF; + idle |= val << EMIF_REG_READ_IDLE_INTERVAL_SHIFT; + + idle |= EMIF_REG_READ_IDLE_LEN_VAL << EMIF_REG_READ_IDLE_LEN_SHIFT; + + return idle; +} + +static u32 get_ddr_phy_ctrl_1(u32 freq, u8 RL) +{ + u32 phy = 0, val = 0; + + phy |= (RL + 2) << EMIF_REG_READ_LATENCY_SHIFT; + + if (freq <= 100000000) + val = EMIF_DLL_SLAVE_DLY_CTRL_100_MHZ_AND_LESS; + else if (freq <= 200000000) + val = EMIF_DLL_SLAVE_DLY_CTRL_200_MHZ; + else + val = EMIF_DLL_SLAVE_DLY_CTRL_400_MHZ; + phy |= val << EMIF_REG_DLL_SLAVE_DLY_CTRL_SHIFT; + + /* Other fields are constant magic values. Hardcode them together */ + phy |= EMIF_DDR_PHY_CTRL_1_BASE_VAL << + EMIF_EMIF_DDR_PHY_CTRL_1_BASE_VAL_SHIFT; + + return phy; +} + +static u32 get_emif_mem_size(u32 base) +{ + u32 size_mbytes = 0, temp; + struct emif_device_details dev_details; + struct lpddr2_device_details cs0_dev_details, cs1_dev_details; + u32 emif_nr = emif_num(base); + + emif_reset_phy(base); + dev_details.cs0_device_details = emif_get_device_details(emif_nr, CS0, + &cs0_dev_details); + dev_details.cs1_device_details = emif_get_device_details(emif_nr, CS1, + &cs1_dev_details); + emif_reset_phy(base); + + if (dev_details.cs0_device_details) { + temp = dev_details.cs0_device_details->density; + size_mbytes += lpddr2_density_2_size_in_mbytes[temp]; + } + + if (dev_details.cs1_device_details) { + temp = dev_details.cs1_device_details->density; + size_mbytes += lpddr2_density_2_size_in_mbytes[temp]; + } + /* convert to bytes */ + return size_mbytes << 20; +} + +/* Gets the encoding corresponding to a given DMM section size */ +u32 get_dmm_section_size_map(u32 section_size) +{ + /* + * Section size mapping: + * 0x0: 16-MiB section + * 0x1: 32-MiB section + * 0x2: 64-MiB section + * 0x3: 128-MiB section + * 0x4: 256-MiB section + * 0x5: 512-MiB section + * 0x6: 1-GiB section + * 0x7: 2-GiB section + */ + section_size >>= 24; /* divide by 16 MB */ + return log_2_n_round_down(section_size); +} + +static void emif_calculate_regs( + const struct emif_device_details *emif_dev_details, + u32 freq, struct emif_regs *regs) +{ + u32 temp, sys_freq; + const struct lpddr2_addressing *addressing; + const struct lpddr2_ac_timings *timings; + const struct lpddr2_min_tck *min_tck; + const struct lpddr2_device_details *cs0_dev_details = + emif_dev_details->cs0_device_details; + const struct lpddr2_device_details *cs1_dev_details = + emif_dev_details->cs1_device_details; + const struct lpddr2_device_timings *cs0_dev_timings = + emif_dev_details->cs0_device_timings; + + emif_assert(emif_dev_details); + emif_assert(regs); + /* + * You can not have a device on CS1 without one on CS0 + * So configuring EMIF without a device on CS0 doesn't + * make sense + */ + emif_assert(cs0_dev_details); + emif_assert(cs0_dev_details->type != LPDDR2_TYPE_NVM); + /* + * If there is a device on CS1 it should be same type as CS0 + * (or NVM. But NVM is not supported in this driver yet) + */ + emif_assert((cs1_dev_details == NULL) || + (cs1_dev_details->type == LPDDR2_TYPE_NVM) || + (cs0_dev_details->type == cs1_dev_details->type)); + emif_assert(freq <= MAX_LPDDR2_FREQ); + + set_ddr_clk_period(freq); + + /* + * The device on CS0 is used for all timing calculations + * There is only one set of registers for timings per EMIF. So, if the + * second CS(CS1) has a device, it should have the same timings as the + * device on CS0 + */ + timings = get_timings_table(cs0_dev_timings->ac_timings, freq); + emif_assert(timings); + min_tck = cs0_dev_timings->min_tck; + + temp = addressing_table_index(cs0_dev_details->type, + cs0_dev_details->density, + cs0_dev_details->io_width); + + emif_assert((temp >= 0)); + addressing = &(addressing_table[temp]); + emif_assert(addressing); + + sys_freq = get_sys_clk_freq(); + + regs->sdram_config_init = get_sdram_config_reg(cs0_dev_details, + cs1_dev_details, + addressing, RL_BOOT); + + regs->sdram_config = get_sdram_config_reg(cs0_dev_details, + cs1_dev_details, + addressing, RL_FINAL); + + regs->ref_ctrl = get_sdram_ref_ctrl(freq, addressing); + + regs->sdram_tim1 = get_sdram_tim_1_reg(timings, min_tck, addressing); + + regs->sdram_tim2 = get_sdram_tim_2_reg(timings, min_tck); + + regs->sdram_tim3 = get_sdram_tim_3_reg(timings, min_tck, addressing); + + regs->read_idle_ctrl = get_read_idle_ctrl_reg(LPDDR2_VOLTAGE_STABLE); + + regs->temp_alert_config = + get_temp_alert_config(cs1_dev_details, addressing, 0); + + regs->zq_config = get_zq_config_reg(cs1_dev_details, addressing, + LPDDR2_VOLTAGE_STABLE); + + regs->emif_ddr_phy_ctlr_1_init = + get_ddr_phy_ctrl_1(sys_freq / 2, RL_BOOT); + + regs->emif_ddr_phy_ctlr_1 = + get_ddr_phy_ctrl_1(freq, RL_FINAL); + + regs->freq = freq; + + print_timing_reg(regs->sdram_config_init); + print_timing_reg(regs->sdram_config); + print_timing_reg(regs->ref_ctrl); + print_timing_reg(regs->sdram_tim1); + print_timing_reg(regs->sdram_tim2); + print_timing_reg(regs->sdram_tim3); + print_timing_reg(regs->read_idle_ctrl); + print_timing_reg(regs->temp_alert_config); + print_timing_reg(regs->zq_config); + print_timing_reg(regs->emif_ddr_phy_ctlr_1); + print_timing_reg(regs->emif_ddr_phy_ctlr_1_init); +} +#endif /* CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS */ + +#ifdef CONFIG_SYS_AUTOMATIC_SDRAM_DETECTION +const char *get_lpddr2_type(u8 type_id) +{ + switch (type_id) { + case LPDDR2_TYPE_S4: + return "LPDDR2-S4"; + case LPDDR2_TYPE_S2: + return "LPDDR2-S2"; + default: + return NULL; + } +} + +const char *get_lpddr2_io_width(u8 width_id) +{ + switch (width_id) { + case LPDDR2_IO_WIDTH_8: + return "x8"; + case LPDDR2_IO_WIDTH_16: + return "x16"; + case LPDDR2_IO_WIDTH_32: + return "x32"; + default: + return NULL; + } +} + +const char *get_lpddr2_manufacturer(u32 manufacturer) +{ + switch (manufacturer) { + case LPDDR2_MANUFACTURER_SAMSUNG: + return "Samsung"; + case LPDDR2_MANUFACTURER_QIMONDA: + return "Qimonda"; + case LPDDR2_MANUFACTURER_ELPIDA: + return "Elpida"; + case LPDDR2_MANUFACTURER_ETRON: + return "Etron"; + case LPDDR2_MANUFACTURER_NANYA: + return "Nanya"; + case LPDDR2_MANUFACTURER_HYNIX: + return "Hynix"; + case LPDDR2_MANUFACTURER_MOSEL: + return "Mosel"; + case LPDDR2_MANUFACTURER_WINBOND: + return "Winbond"; + case LPDDR2_MANUFACTURER_ESMT: + return "ESMT"; + case LPDDR2_MANUFACTURER_SPANSION: + return "Spansion"; + case LPDDR2_MANUFACTURER_SST: + return "SST"; + case LPDDR2_MANUFACTURER_ZMOS: + return "ZMOS"; + case LPDDR2_MANUFACTURER_INTEL: + return "Intel"; + case LPDDR2_MANUFACTURER_NUMONYX: + return "Numonyx"; + case LPDDR2_MANUFACTURER_MICRON: + return "Micron"; + default: + return NULL; + } +} + +static void display_sdram_details(u32 emif_nr, u32 cs, + struct lpddr2_device_details *device) +{ + const char *mfg_str; + const char *type_str; + char density_str[10]; + u32 density; + + debug("EMIF%d CS%d\t", emif_nr, cs); + + if (!device) { + debug("None\n"); + return; + } + + mfg_str = get_lpddr2_manufacturer(device->manufacturer); + type_str = get_lpddr2_type(device->type); + + density = lpddr2_density_2_size_in_mbytes[device->density]; + if ((density / 1024 * 1024) == density) { + density /= 1024; + sprintf(density_str, "%d GB", density); + } else + sprintf(density_str, "%d MB", density); + if (mfg_str && type_str) + debug("%s\t\t%s\t%s\n", mfg_str, type_str, density_str); +} + +static u8 is_lpddr2_sdram_present(u32 base, u32 cs, + struct lpddr2_device_details *lpddr2_device) +{ + u32 mr = 0, temp; + + mr = get_mr(base, cs, LPDDR2_MR0); + if (mr > 0xFF) { + /* Mode register value bigger than 8 bit */ + return 0; + } + + temp = (mr & LPDDR2_MR0_DI_MASK) >> LPDDR2_MR0_DI_SHIFT; + if (temp) { + /* Not SDRAM */ + return 0; + } + temp = (mr & LPDDR2_MR0_DNVI_MASK) >> LPDDR2_MR0_DNVI_SHIFT; + + if (temp) { + /* DNV supported - But DNV is only supported for NVM */ + return 0; + } + + mr = get_mr(base, cs, LPDDR2_MR4); + if (mr > 0xFF) { + /* Mode register value bigger than 8 bit */ + return 0; + } + + mr = get_mr(base, cs, LPDDR2_MR5); + if (mr > 0xFF) { + /* Mode register value bigger than 8 bit */ + return 0; + } + + if (!get_lpddr2_manufacturer(mr)) { + /* Manufacturer not identified */ + return 0; + } + lpddr2_device->manufacturer = mr; + + mr = get_mr(base, cs, LPDDR2_MR6); + if (mr >= 0xFF) { + /* Mode register value bigger than 8 bit */ + return 0; + } + + mr = get_mr(base, cs, LPDDR2_MR7); + if (mr >= 0xFF) { + /* Mode register value bigger than 8 bit */ + return 0; + } + + mr = get_mr(base, cs, LPDDR2_MR8); + if (mr >= 0xFF) { + /* Mode register value bigger than 8 bit */ + return 0; + } + + temp = (mr & MR8_TYPE_MASK) >> MR8_TYPE_SHIFT; + if (!get_lpddr2_type(temp)) { + /* Not SDRAM */ + return 0; + } + lpddr2_device->type = temp; + + temp = (mr & MR8_DENSITY_MASK) >> MR8_DENSITY_SHIFT; + if (temp > LPDDR2_DENSITY_32Gb) { + /* Density not supported */ + return 0; + } + lpddr2_device->density = temp; + + temp = (mr & MR8_IO_WIDTH_MASK) >> MR8_IO_WIDTH_SHIFT; + if (!get_lpddr2_io_width(temp)) { + /* IO width unsupported value */ + return 0; + } + lpddr2_device->io_width = temp; + + /* + * If all the above tests pass we should + * have a device on this chip-select + */ + return 1; +} + +struct lpddr2_device_details *emif_get_device_details(u32 emif_nr, u8 cs, + struct lpddr2_device_details *lpddr2_dev_details) +{ + u32 phy; + u32 base = (emif_nr == 1) ? EMIF1_BASE : EMIF2_BASE; + + struct emif_reg_struct *emif = (struct emif_reg_struct *)base; + + if (!lpddr2_dev_details) + return NULL; + + /* Do the minimum init for mode register accesses */ + if (!(running_from_sdram() || warm_reset())) { + phy = get_ddr_phy_ctrl_1(get_sys_clk_freq() / 2, RL_BOOT); + writel(phy, &emif->emif_ddr_phy_ctrl_1); + } + + if (!(is_lpddr2_sdram_present(base, cs, lpddr2_dev_details))) + return NULL; + + display_sdram_details(emif_num(base), cs, lpddr2_dev_details); + + return lpddr2_dev_details; +} +#endif /* CONFIG_SYS_AUTOMATIC_SDRAM_DETECTION */ + +static void do_sdram_init(u32 base) +{ + const struct emif_regs *regs; + u32 in_sdram, emif_nr; + + debug(">>do_sdram_init() %x\n", base); + + in_sdram = running_from_sdram(); + emif_nr = (base == EMIF1_BASE) ? 1 : 2; + +#ifdef CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS + emif_get_reg_dump(emif_nr, ®s); + if (!regs) { + debug("EMIF: reg dump not provided\n"); + return; + } +#else + /* + * The user has not provided the register values. We need to + * calculate it based on the timings and the DDR frequency + */ + struct emif_device_details dev_details; + struct emif_regs calculated_regs; + + /* + * Get device details: + * - Discovered if CONFIG_SYS_AUTOMATIC_SDRAM_DETECTION is set + * - Obtained from user otherwise + */ + struct lpddr2_device_details cs0_dev_details, cs1_dev_details; + emif_reset_phy(base); + dev_details.cs0_device_details = emif_get_device_details(emif_nr, CS0, + &cs0_dev_details); + dev_details.cs1_device_details = emif_get_device_details(emif_nr, CS1, + &cs1_dev_details); + emif_reset_phy(base); + + /* Return if no devices on this EMIF */ + if (!dev_details.cs0_device_details && + !dev_details.cs1_device_details) { + return; + } + + /* + * Get device timings: + * - Default timings specified by JESD209-2 if + * CONFIG_SYS_DEFAULT_LPDDR2_TIMINGS is set + * - Obtained from user otherwise + */ + emif_get_device_timings(emif_nr, &dev_details.cs0_device_timings, + &dev_details.cs1_device_timings); + + /* Calculate the register values */ + emif_calculate_regs(&dev_details, omap_ddr_clk(), &calculated_regs); + regs = &calculated_regs; +#endif /* CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS */ + + /* + * Initializing the LPDDR2 device can not happen from SDRAM. + * Changing the timing registers in EMIF can happen(going from one + * OPP to another) + */ + if (!(in_sdram || warm_reset())) { + if (emif_sdram_type() == EMIF_SDRAM_TYPE_LPDDR2) + lpddr2_init(base, regs); + else + ddr3_init(base, regs); + } + if (warm_reset() && (emif_sdram_type() == EMIF_SDRAM_TYPE_DDR3)) { + set_lpmode_selfrefresh(base); + emif_reset_phy(base); + ddr3_leveling(base, regs); + } + + /* Write to the shadow registers */ + emif_update_timings(base, regs); + + debug("<<do_sdram_init() %x\n", base); +} + +void emif_post_init_config(u32 base) +{ + struct emif_reg_struct *emif = (struct emif_reg_struct *)base; + u32 omap_rev = omap_revision(); + + /* reset phy on ES2.0 */ + if (omap_rev == OMAP4430_ES2_0) + emif_reset_phy(base); + + /* Put EMIF back in smart idle on ES1.0 */ + if (omap_rev == OMAP4430_ES1_0) + writel(0x80000000, &emif->emif_pwr_mgmt_ctrl); +} + +void dmm_init(u32 base) +{ + const struct dmm_lisa_map_regs *lisa_map_regs; + u32 i, section, valid; + +#ifdef CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS + emif_get_dmm_regs(&lisa_map_regs); +#else + u32 emif1_size, emif2_size, mapped_size, section_map = 0; + u32 section_cnt, sys_addr; + struct dmm_lisa_map_regs lis_map_regs_calculated = {0}; + + mapped_size = 0; + section_cnt = 3; + sys_addr = CONFIG_SYS_SDRAM_BASE; + emif1_size = get_emif_mem_size(EMIF1_BASE); + emif2_size = get_emif_mem_size(EMIF2_BASE); + debug("emif1_size 0x%x emif2_size 0x%x\n", emif1_size, emif2_size); + + if (!emif1_size && !emif2_size) + return; + + /* symmetric interleaved section */ + if (emif1_size && emif2_size) { + mapped_size = min(emif1_size, emif2_size); + section_map = DMM_LISA_MAP_INTERLEAVED_BASE_VAL; + section_map |= 0 << EMIF_SDRC_ADDR_SHIFT; + /* only MSB */ + section_map |= (sys_addr >> 24) << + EMIF_SYS_ADDR_SHIFT; + section_map |= get_dmm_section_size_map(mapped_size * 2) + << EMIF_SYS_SIZE_SHIFT; + lis_map_regs_calculated.dmm_lisa_map_3 = section_map; + emif1_size -= mapped_size; + emif2_size -= mapped_size; + sys_addr += (mapped_size * 2); + section_cnt--; + } + + /* + * Single EMIF section(we can have a maximum of 1 single EMIF + * section- either EMIF1 or EMIF2 or none, but not both) + */ + if (emif1_size) { + section_map = DMM_LISA_MAP_EMIF1_ONLY_BASE_VAL; + section_map |= get_dmm_section_size_map(emif1_size) + << EMIF_SYS_SIZE_SHIFT; + /* only MSB */ + section_map |= (mapped_size >> 24) << + EMIF_SDRC_ADDR_SHIFT; + /* only MSB */ + section_map |= (sys_addr >> 24) << EMIF_SYS_ADDR_SHIFT; + section_cnt--; + } + if (emif2_size) { + section_map = DMM_LISA_MAP_EMIF2_ONLY_BASE_VAL; + section_map |= get_dmm_section_size_map(emif2_size) << + EMIF_SYS_SIZE_SHIFT; + /* only MSB */ + section_map |= mapped_size >> 24 << EMIF_SDRC_ADDR_SHIFT; + /* only MSB */ + section_map |= sys_addr >> 24 << EMIF_SYS_ADDR_SHIFT; + section_cnt--; + } + + if (section_cnt == 2) { + /* Only 1 section - either symmetric or single EMIF */ + lis_map_regs_calculated.dmm_lisa_map_3 = section_map; + lis_map_regs_calculated.dmm_lisa_map_2 = 0; + lis_map_regs_calculated.dmm_lisa_map_1 = 0; + } else { + /* 2 sections - 1 symmetric, 1 single EMIF */ + lis_map_regs_calculated.dmm_lisa_map_2 = section_map; + lis_map_regs_calculated.dmm_lisa_map_1 = 0; + } + + /* TRAP for invalid TILER mappings in section 0 */ + lis_map_regs_calculated.dmm_lisa_map_0 = DMM_LISA_MAP_0_INVAL_ADDR_TRAP; + + if (omap_revision() >= OMAP4460_ES1_0) + lis_map_regs_calculated.is_ma_present = 1; + + lisa_map_regs = &lis_map_regs_calculated; +#endif + struct dmm_lisa_map_regs *hw_lisa_map_regs = + (struct dmm_lisa_map_regs *)base; + + writel(0, &hw_lisa_map_regs->dmm_lisa_map_3); + writel(0, &hw_lisa_map_regs->dmm_lisa_map_2); + writel(0, &hw_lisa_map_regs->dmm_lisa_map_1); + writel(0, &hw_lisa_map_regs->dmm_lisa_map_0); + + writel(lisa_map_regs->dmm_lisa_map_3, + &hw_lisa_map_regs->dmm_lisa_map_3); + writel(lisa_map_regs->dmm_lisa_map_2, + &hw_lisa_map_regs->dmm_lisa_map_2); + writel(lisa_map_regs->dmm_lisa_map_1, + &hw_lisa_map_regs->dmm_lisa_map_1); + writel(lisa_map_regs->dmm_lisa_map_0, + &hw_lisa_map_regs->dmm_lisa_map_0); + + if (lisa_map_regs->is_ma_present) { + hw_lisa_map_regs = + (struct dmm_lisa_map_regs *)MA_BASE; + + writel(lisa_map_regs->dmm_lisa_map_3, + &hw_lisa_map_regs->dmm_lisa_map_3); + writel(lisa_map_regs->dmm_lisa_map_2, + &hw_lisa_map_regs->dmm_lisa_map_2); + writel(lisa_map_regs->dmm_lisa_map_1, + &hw_lisa_map_regs->dmm_lisa_map_1); + writel(lisa_map_regs->dmm_lisa_map_0, + &hw_lisa_map_regs->dmm_lisa_map_0); + } + + /* + * EMIF should be configured only when + * memory is mapped on it. Using emif1_enabled + * and emif2_enabled variables for this. + */ + emif1_enabled = 0; + emif2_enabled = 0; + for (i = 0; i < 4; i++) { + section = __raw_readl(DMM_BASE + i*4); + valid = (section & EMIF_SDRC_MAP_MASK) >> + (EMIF_SDRC_MAP_SHIFT); + if (valid == 3) { + emif1_enabled = 1; + emif2_enabled = 1; + break; + } else if (valid == 1) { + emif1_enabled = 1; + } else if (valid == 2) { + emif2_enabled = 1; + } + } + +} + +static void do_bug0039_workaround(u32 base) +{ + u32 val, i, clkctrl; + struct emif_reg_struct *emif_base = (struct emif_reg_struct *)base; + const struct read_write_regs *bug_00339_regs; + u32 iterations; + u32 *phy_status_base = &emif_base->emif_ddr_phy_status[0]; + u32 *phy_ctrl_base = &emif_base->emif_ddr_ext_phy_ctrl_1; + + if (is_dra7xx()) + phy_status_base++; + + bug_00339_regs = get_bug_regs(&iterations); + + /* Put EMIF in to idle */ + clkctrl = __raw_readl((*prcm)->cm_memif_clkstctrl); + __raw_writel(0x0, (*prcm)->cm_memif_clkstctrl); + + /* Copy the phy status registers in to phy ctrl shadow registers */ + for (i = 0; i < iterations; i++) { + val = __raw_readl(phy_status_base + + bug_00339_regs[i].read_reg - 1); + + __raw_writel(val, phy_ctrl_base + + ((bug_00339_regs[i].write_reg - 1) << 1)); + + __raw_writel(val, phy_ctrl_base + + (bug_00339_regs[i].write_reg << 1) - 1); + } + + /* Disable leveling */ + writel(0x0, &emif_base->emif_rd_wr_lvl_rmp_ctl); + + __raw_writel(clkctrl, (*prcm)->cm_memif_clkstctrl); +} + +/* + * SDRAM initialization: + * SDRAM initialization has two parts: + * 1. Configuring the SDRAM device + * 2. Update the AC timings related parameters in the EMIF module + * (1) should be done only once and should not be done while we are + * running from SDRAM. + * (2) can and should be done more than once if OPP changes. + * Particularly, this may be needed when we boot without SPL and + * and using Configuration Header(CH). ROM code supports only at 50% OPP + * at boot (low power boot). So u-boot has to switch to OPP100 and update + * the frequency. So, + * Doing (1) and (2) makes sense - first time initialization + * Doing (2) and not (1) makes sense - OPP change (when using CH) + * Doing (1) and not (2) doen't make sense + * See do_sdram_init() for the details + */ +void sdram_init(void) +{ + u32 in_sdram, size_prog, size_detect; + u32 sdram_type = emif_sdram_type(); + + debug(">>sdram_init()\n"); + + if (omap_hw_init_context() == OMAP_INIT_CONTEXT_UBOOT_AFTER_SPL) + return; + + in_sdram = running_from_sdram(); + debug("in_sdram = %d\n", in_sdram); + + if (!in_sdram) { + if ((sdram_type == EMIF_SDRAM_TYPE_LPDDR2) && !warm_reset()) + bypass_dpll((*prcm)->cm_clkmode_dpll_core); + else if (sdram_type == EMIF_SDRAM_TYPE_DDR3) + writel(CM_DLL_CTRL_NO_OVERRIDE, (*prcm)->cm_dll_ctrl); + } + + if (!in_sdram) + dmm_init(DMM_BASE); + + if (emif1_enabled) + do_sdram_init(EMIF1_BASE); + + if (emif2_enabled) + do_sdram_init(EMIF2_BASE); + + if (!(in_sdram || warm_reset())) { + if (emif1_enabled) + emif_post_init_config(EMIF1_BASE); + if (emif2_enabled) + emif_post_init_config(EMIF2_BASE); + } + + /* for the shadow registers to take effect */ + if (sdram_type == EMIF_SDRAM_TYPE_LPDDR2) + freq_update_core(); + + /* Do some testing after the init */ + if (!in_sdram) { + size_prog = omap_sdram_size(); + size_prog = log_2_n_round_down(size_prog); + size_prog = (1 << size_prog); + + size_detect = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, + size_prog); + /* Compare with the size programmed */ + if (size_detect != size_prog) { + printf("SDRAM: identified size not same as expected" + " size identified: %x expected: %x\n", + size_detect, + size_prog); + } else + debug("get_ram_size() successful"); + } + + if (sdram_type == EMIF_SDRAM_TYPE_DDR3 && + (!in_sdram && !warm_reset())) { + do_bug0039_workaround(EMIF1_BASE); + do_bug0039_workaround(EMIF2_BASE); + } + + debug("<<sdram_init()\n"); +} diff --git a/roms/u-boot/arch/arm/cpu/armv7/omap-common/hwinit-common.c b/roms/u-boot/arch/arm/cpu/armv7/omap-common/hwinit-common.c new file mode 100644 index 00000000..8ebc0ce2 --- /dev/null +++ b/roms/u-boot/arch/arm/cpu/armv7/omap-common/hwinit-common.c @@ -0,0 +1,299 @@ +/* + * + * Common functions for OMAP4/5 based boards + * + * (C) Copyright 2010 + * Texas Instruments, <www.ti.com> + * + * Author : + * Aneesh V <aneesh@ti.com> + * Steve Sakoman <steve@sakoman.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#include <common.h> +#include <spl.h> +#include <asm/arch/sys_proto.h> +#include <linux/sizes.h> +#include <asm/emif.h> +#include <asm/omap_common.h> +#include <linux/compiler.h> +#include <asm/cache.h> +#include <asm/system.h> + +#define ARMV7_DCACHE_WRITEBACK 0xe +#define ARMV7_DOMAIN_CLIENT 1 +#define ARMV7_DOMAIN_MASK (0x3 << 0) + +DECLARE_GLOBAL_DATA_PTR; + +void do_set_mux(u32 base, struct pad_conf_entry const *array, int size) +{ + int i; + struct pad_conf_entry *pad = (struct pad_conf_entry *) array; + + for (i = 0; i < size; i++, pad++) + writew(pad->val, base + pad->offset); +} + +static void set_mux_conf_regs(void) +{ + switch (omap_hw_init_context()) { + case OMAP_INIT_CONTEXT_SPL: + set_muxconf_regs_essential(); + break; + case OMAP_INIT_CONTEXT_UBOOT_AFTER_SPL: + break; + case OMAP_INIT_CONTEXT_UBOOT_FROM_NOR: + case OMAP_INIT_CONTEXT_UBOOT_AFTER_CH: + set_muxconf_regs_essential(); + break; + } +} + +u32 cortex_rev(void) +{ + + unsigned int rev; + + /* Read Main ID Register (MIDR) */ + asm ("mrc p15, 0, %0, c0, c0, 0" : "=r" (rev)); + + return rev; +} + +static void omap_rev_string(void) +{ + u32 omap_rev = omap_revision(); + u32 soc_variant = (omap_rev & 0xF0000000) >> 28; + u32 omap_variant = (omap_rev & 0xFFFF0000) >> 16; + u32 major_rev = (omap_rev & 0x00000F00) >> 8; + u32 minor_rev = (omap_rev & 0x000000F0) >> 4; + + if (soc_variant) + printf("OMAP"); + else + printf("DRA"); + printf("%x ES%x.%x\n", omap_variant, major_rev, + minor_rev); +} + +#ifdef CONFIG_SPL_BUILD +void spl_display_print(void) +{ + omap_rev_string(); +} +#endif + +void __weak srcomp_enable(void) +{ +} + +#ifdef CONFIG_ARCH_CPU_INIT +/* + * SOC specific cpu init + */ +int arch_cpu_init(void) +{ + save_omap_boot_params(); + return 0; +} +#endif /* CONFIG_ARCH_CPU_INIT */ + +/* + * Routine: s_init + * Description: Does early system init of watchdog, muxing, andclocks + * Watchdog disable is done always. For the rest what gets done + * depends on the boot mode in which this function is executed + * 1. s_init of SPL running from SRAM + * 2. s_init of U-Boot running from FLASH + * 3. s_init of U-Boot loaded to SDRAM by SPL + * 4. s_init of U-Boot loaded to SDRAM by ROM code using the + * Configuration Header feature + * Please have a look at the respective functions to see what gets + * done in each of these cases + * This function is called with SRAM stack. + */ +void s_init(void) +{ + /* + * Save the boot parameters passed from romcode. + * We cannot delay the saving further than this, + * to prevent overwrites. + */ +#ifdef CONFIG_SPL_BUILD + save_omap_boot_params(); +#endif + init_omap_revision(); + hw_data_init(); + +#ifdef CONFIG_SPL_BUILD + if (warm_reset() && (omap_revision() <= OMAP5430_ES1_0)) + force_emif_self_refresh(); +#endif + watchdog_init(); + set_mux_conf_regs(); +#ifdef CONFIG_SPL_BUILD + srcomp_enable(); + setup_clocks_for_console(); + + gd = &gdata; + + preloader_console_init(); + do_io_settings(); +#endif + prcm_init(); +#ifdef CONFIG_SPL_BUILD + /* For regular u-boot sdram_init() is called from dram_init() */ + sdram_init(); +#endif +} + +/* + * Routine: wait_for_command_complete + * Description: Wait for posting to finish on watchdog + */ +void wait_for_command_complete(struct watchdog *wd_base) +{ + int pending = 1; + do { + pending = readl(&wd_base->wwps); + } while (pending); +} + +/* + * Routine: watchdog_init + * Description: Shut down watch dogs + */ +void watchdog_init(void) +{ + struct watchdog *wd2_base = (struct watchdog *)WDT2_BASE; + + writel(WD_UNLOCK1, &wd2_base->wspr); + wait_for_command_complete(wd2_base); + writel(WD_UNLOCK2, &wd2_base->wspr); +} + + +/* + * This function finds the SDRAM size available in the system + * based on DMM section configurations + * This is needed because the size of memory installed may be + * different on different versions of the board + */ +u32 omap_sdram_size(void) +{ + u32 section, i, valid; + u64 sdram_start = 0, sdram_end = 0, addr, + size, total_size = 0, trap_size = 0; + + for (i = 0; i < 4; i++) { + section = __raw_readl(DMM_BASE + i*4); + valid = (section & EMIF_SDRC_ADDRSPC_MASK) >> + (EMIF_SDRC_ADDRSPC_SHIFT); + addr = section & EMIF_SYS_ADDR_MASK; + + /* See if the address is valid */ + if ((addr >= DRAM_ADDR_SPACE_START) && + (addr < DRAM_ADDR_SPACE_END)) { + size = ((section & EMIF_SYS_SIZE_MASK) >> + EMIF_SYS_SIZE_SHIFT); + size = 1 << size; + size *= SZ_16M; + + if (valid != DMM_SDRC_ADDR_SPC_INVALID) { + if (!sdram_start || (addr < sdram_start)) + sdram_start = addr; + if (!sdram_end || ((addr + size) > sdram_end)) + sdram_end = addr + size; + } else { + trap_size = size; + } + + } + + } + total_size = (sdram_end - sdram_start) - (trap_size); + + return total_size; +} + + +/* + * Routine: dram_init + * Description: sets uboots idea of sdram size + */ +int dram_init(void) +{ + sdram_init(); + gd->ram_size = omap_sdram_size(); + return 0; +} + +/* + * Print board information + */ +int checkboard(void) +{ + puts(sysinfo.board_string); + return 0; +} + +/* + * get_device_type(): tell if GP/HS/EMU/TST + */ +u32 get_device_type(void) +{ + return (readl((*ctrl)->control_status) & + (DEVICE_TYPE_MASK)) >> DEVICE_TYPE_SHIFT; +} + +#if defined(CONFIG_DISPLAY_CPUINFO) +/* + * Print CPU information + */ +int print_cpuinfo(void) +{ + puts("CPU : "); + omap_rev_string(); + + return 0; +} +#endif + +#ifndef CONFIG_SYS_DCACHE_OFF +void enable_caches(void) +{ + /* Enable D-cache. I-cache is already enabled in start.S */ + dcache_enable(); +} + +void dram_bank_mmu_setup(int bank) +{ + bd_t *bd = gd->bd; + int i; + + u32 start = bd->bi_dram[bank].start >> 20; + u32 size = bd->bi_dram[bank].size >> 20; + u32 end = start + size; + + debug("%s: bank: %d\n", __func__, bank); + for (i = start; i < end; i++) + set_section_dcache(i, ARMV7_DCACHE_WRITEBACK); + +} + +void arm_init_domains(void) +{ + u32 reg; + + reg = get_dacr(); + /* + * Set DOMAIN to client access so that all permissions + * set in pagetables are validated by the mmu. + */ + reg &= ~ARMV7_DOMAIN_MASK; + reg |= ARMV7_DOMAIN_CLIENT; + set_dacr(reg); +} +#endif diff --git a/roms/u-boot/arch/arm/cpu/armv7/omap-common/lowlevel_init.S b/roms/u-boot/arch/arm/cpu/armv7/omap-common/lowlevel_init.S new file mode 100644 index 00000000..86c0e421 --- /dev/null +++ b/roms/u-boot/arch/arm/cpu/armv7/omap-common/lowlevel_init.S @@ -0,0 +1,32 @@ +/* + * Board specific setup info + * + * (C) Copyright 2010 + * Texas Instruments, <www.ti.com> + * + * Author : + * Aneesh V <aneesh@ti.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <config.h> +#include <asm/arch/omap.h> +#include <asm/omap_common.h> +#include <asm/arch/spl.h> +#include <linux/linkage.h> + +ENTRY(save_boot_params) + ldr r1, =OMAP_SRAM_SCRATCH_BOOT_PARAMS + str r0, [r1] + bx lr +ENDPROC(save_boot_params) + +ENTRY(set_pl310_ctrl_reg) + PUSH {r4-r11, lr} @ save registers - ROM code may pollute + @ our registers + LDR r12, =0x102 @ Set PL310 control register - value in R0 + .word 0xe1600070 @ SMC #0 - hand assembled because -march=armv5 + @ call ROM Code API to set control register + POP {r4-r11, pc} +ENDPROC(set_pl310_ctrl_reg) diff --git a/roms/u-boot/arch/arm/cpu/armv7/omap-common/mem-common.c b/roms/u-boot/arch/arm/cpu/armv7/omap-common/mem-common.c new file mode 100644 index 00000000..afc1bc18 --- /dev/null +++ b/roms/u-boot/arch/arm/cpu/armv7/omap-common/mem-common.c @@ -0,0 +1,32 @@ +/* + * (C) Copyright 2010 + * Texas Instruments, <www.ti.com> + * + * Steve Sakoman <steve@sakoman.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <asm/arch/cpu.h> +#include <asm/arch/sys_proto.h> + +struct gpmc *gpmc_cfg; + +/***************************************************** + * gpmc_init(): init gpmc bus + * This code can only be executed from SRAM or SDRAM. + *****************************************************/ +void gpmc_init(void) +{ + gpmc_cfg = (struct gpmc *)GPMC_BASE; + + /* global settings */ + writel(0, &gpmc_cfg->irqenable); /* isr's sources masked */ + writel(0, &gpmc_cfg->timeout_control);/* timeout disable */ + + /* + * Disable the GPMC0 config set by ROM code + * It conflicts with our MPDB (both at 0x08000000) + */ + writel(0, &gpmc_cfg->cs[0].config7); +} diff --git a/roms/u-boot/arch/arm/cpu/armv7/omap-common/pipe3-phy.c b/roms/u-boot/arch/arm/cpu/armv7/omap-common/pipe3-phy.c new file mode 100644 index 00000000..b71d7694 --- /dev/null +++ b/roms/u-boot/arch/arm/cpu/armv7/omap-common/pipe3-phy.c @@ -0,0 +1,231 @@ +/* + * TI PIPE3 PHY + * + * (C) Copyright 2013 + * Texas Instruments, <www.ti.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <sata.h> +#include <asm/arch/clock.h> +#include <asm/arch/sys_proto.h> +#include <asm/io.h> +#include <asm/errno.h> +#include "pipe3-phy.h" + +/* PLLCTRL Registers */ +#define PLL_STATUS 0x00000004 +#define PLL_GO 0x00000008 +#define PLL_CONFIGURATION1 0x0000000C +#define PLL_CONFIGURATION2 0x00000010 +#define PLL_CONFIGURATION3 0x00000014 +#define PLL_CONFIGURATION4 0x00000020 + +#define PLL_REGM_MASK 0x001FFE00 +#define PLL_REGM_SHIFT 9 +#define PLL_REGM_F_MASK 0x0003FFFF +#define PLL_REGM_F_SHIFT 0 +#define PLL_REGN_MASK 0x000001FE +#define PLL_REGN_SHIFT 1 +#define PLL_SELFREQDCO_MASK 0x0000000E +#define PLL_SELFREQDCO_SHIFT 1 +#define PLL_SD_MASK 0x0003FC00 +#define PLL_SD_SHIFT 10 +#define SET_PLL_GO 0x1 +#define PLL_TICOPWDN BIT(16) +#define PLL_LDOPWDN BIT(15) +#define PLL_LOCK 0x2 +#define PLL_IDLE 0x1 + +/* PHY POWER CONTROL Register */ +#define OMAP_CTRL_PIPE3_PHY_PWRCTL_CLK_CMD_MASK 0x003FC000 +#define OMAP_CTRL_PIPE3_PHY_PWRCTL_CLK_CMD_SHIFT 0xE + +#define OMAP_CTRL_PIPE3_PHY_PWRCTL_CLK_FREQ_MASK 0xFFC00000 +#define OMAP_CTRL_PIPE3_PHY_PWRCTL_CLK_FREQ_SHIFT 0x16 + +#define OMAP_CTRL_PIPE3_PHY_TX_RX_POWERON 0x3 +#define OMAP_CTRL_PIPE3_PHY_TX_RX_POWEROFF 0x0 + + +#define PLL_IDLE_TIME 100 /* in milliseconds */ +#define PLL_LOCK_TIME 100 /* in milliseconds */ + +static inline u32 omap_pipe3_readl(void __iomem *addr, unsigned offset) +{ + return __raw_readl(addr + offset); +} + +static inline void omap_pipe3_writel(void __iomem *addr, unsigned offset, + u32 data) +{ + __raw_writel(data, addr + offset); +} + +static struct pipe3_dpll_params *omap_pipe3_get_dpll_params(struct omap_pipe3 + *pipe3) +{ + u32 rate; + struct pipe3_dpll_map *dpll_map = pipe3->dpll_map; + + rate = get_sys_clk_freq(); + + for (; dpll_map->rate; dpll_map++) { + if (rate == dpll_map->rate) + return &dpll_map->params; + } + + printf("%s: No DPLL configuration for %u Hz SYS CLK\n", + __func__, rate); + return NULL; +} + + +static int omap_pipe3_wait_lock(struct omap_pipe3 *phy) +{ + u32 val; + int timeout = PLL_LOCK_TIME; + + do { + mdelay(1); + val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_STATUS); + if (val & PLL_LOCK) + break; + } while (--timeout); + + if (!(val & PLL_LOCK)) { + printf("%s: DPLL failed to lock\n", __func__); + return -EBUSY; + } + + return 0; +} + +static int omap_pipe3_dpll_program(struct omap_pipe3 *phy) +{ + u32 val; + struct pipe3_dpll_params *dpll_params; + + dpll_params = omap_pipe3_get_dpll_params(phy); + if (!dpll_params) { + printf("%s: Invalid DPLL parameters\n", __func__); + return -EINVAL; + } + + val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION1); + val &= ~PLL_REGN_MASK; + val |= dpll_params->n << PLL_REGN_SHIFT; + omap_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION1, val); + + val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2); + val &= ~PLL_SELFREQDCO_MASK; + val |= dpll_params->freq << PLL_SELFREQDCO_SHIFT; + omap_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val); + + val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION1); + val &= ~PLL_REGM_MASK; + val |= dpll_params->m << PLL_REGM_SHIFT; + omap_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION1, val); + + val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION4); + val &= ~PLL_REGM_F_MASK; + val |= dpll_params->mf << PLL_REGM_F_SHIFT; + omap_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION4, val); + + val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION3); + val &= ~PLL_SD_MASK; + val |= dpll_params->sd << PLL_SD_SHIFT; + omap_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION3, val); + + omap_pipe3_writel(phy->pll_ctrl_base, PLL_GO, SET_PLL_GO); + + return omap_pipe3_wait_lock(phy); +} + +static void omap_control_phy_power(struct omap_pipe3 *phy, int on) +{ + u32 val, rate; + + val = readl(phy->power_reg); + + rate = get_sys_clk_freq(); + rate = rate/1000000; + + if (on) { + val &= ~(OMAP_CTRL_PIPE3_PHY_PWRCTL_CLK_CMD_MASK | + OMAP_CTRL_PIPE3_PHY_PWRCTL_CLK_FREQ_MASK); + val |= OMAP_CTRL_PIPE3_PHY_TX_RX_POWERON << + OMAP_CTRL_PIPE3_PHY_PWRCTL_CLK_CMD_SHIFT; + val |= rate << + OMAP_CTRL_PIPE3_PHY_PWRCTL_CLK_FREQ_SHIFT; + } else { + val &= ~OMAP_CTRL_PIPE3_PHY_PWRCTL_CLK_CMD_MASK; + val |= OMAP_CTRL_PIPE3_PHY_TX_RX_POWEROFF << + OMAP_CTRL_PIPE3_PHY_PWRCTL_CLK_CMD_SHIFT; + } + + writel(val, phy->power_reg); +} + +int phy_pipe3_power_on(struct omap_pipe3 *phy) +{ + int ret; + u32 val; + + /* Program the DPLL only if not locked */ + val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_STATUS); + if (!(val & PLL_LOCK)) { + ret = omap_pipe3_dpll_program(phy); + if (ret) + return ret; + } else { + /* else just bring it out of IDLE mode */ + val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2); + if (val & PLL_IDLE) { + val &= ~PLL_IDLE; + omap_pipe3_writel(phy->pll_ctrl_base, + PLL_CONFIGURATION2, val); + ret = omap_pipe3_wait_lock(phy); + if (ret) + return ret; + } + } + + /* Power up the PHY */ + omap_control_phy_power(phy, 1); + + return 0; +} + +int phy_pipe3_power_off(struct omap_pipe3 *phy) +{ + u32 val; + int timeout = PLL_IDLE_TIME; + + /* Power down the PHY */ + omap_control_phy_power(phy, 0); + + /* Put DPLL in IDLE mode */ + val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2); + val |= PLL_IDLE; + omap_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val); + + /* wait for LDO and Oscillator to power down */ + do { + mdelay(1); + val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_STATUS); + if ((val & PLL_TICOPWDN) && (val & PLL_LDOPWDN)) + break; + } while (--timeout); + + if (!(val & PLL_TICOPWDN) || !(val & PLL_LDOPWDN)) { + printf("%s: Failed to power down DPLL: PLL_STATUS 0x%x\n", + __func__, val); + return -EBUSY; + } + + return 0; +} + diff --git a/roms/u-boot/arch/arm/cpu/armv7/omap-common/pipe3-phy.h b/roms/u-boot/arch/arm/cpu/armv7/omap-common/pipe3-phy.h new file mode 100644 index 00000000..441f49a3 --- /dev/null +++ b/roms/u-boot/arch/arm/cpu/armv7/omap-common/pipe3-phy.h @@ -0,0 +1,36 @@ +/* + * TI PIPE3 PHY + * + * (C) Copyright 2013 + * Texas Instruments, <www.ti.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __OMAP_PIPE3_PHY_H +#define __OMAP_PIPE3_PHY_H + +struct pipe3_dpll_params { + u16 m; + u8 n; + u8 freq:3; + u8 sd; + u32 mf; +}; + +struct pipe3_dpll_map { + unsigned long rate; + struct pipe3_dpll_params params; +}; + +struct omap_pipe3 { + void __iomem *pll_ctrl_base; + void __iomem *power_reg; + struct pipe3_dpll_map *dpll_map; +}; + + +int phy_pipe3_power_on(struct omap_pipe3 *phy); +int phy_pipe3_power_off(struct omap_pipe3 *pipe3); + +#endif /* __OMAP_PIPE3_PHY_H */ diff --git a/roms/u-boot/arch/arm/cpu/armv7/omap-common/reset.c b/roms/u-boot/arch/arm/cpu/armv7/omap-common/reset.c new file mode 100644 index 00000000..91ad031d --- /dev/null +++ b/roms/u-boot/arch/arm/cpu/armv7/omap-common/reset.c @@ -0,0 +1,29 @@ +/* + * + * Common layer for reset related functionality of OMAP based socs. + * + * (C) Copyright 2012 + * Texas Instruments, <www.ti.com> + * + * Sricharan R <r.sricharan@ti.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#include <config.h> +#include <asm/io.h> +#include <asm/arch/cpu.h> +#include <linux/compiler.h> + +void __weak reset_cpu(unsigned long ignored) +{ + writel(PRM_RSTCTRL_RESET, PRM_RSTCTRL); +} + +u32 __weak warm_reset(void) +{ + return (readl(PRM_RSTST) & PRM_RSTST_WARM_RESET_MASK); +} + +void __weak setup_warmreset_time(void) +{ +} diff --git a/roms/u-boot/arch/arm/cpu/armv7/omap-common/sata.c b/roms/u-boot/arch/arm/cpu/armv7/omap-common/sata.c new file mode 100644 index 00000000..cad4feed --- /dev/null +++ b/roms/u-boot/arch/arm/cpu/armv7/omap-common/sata.c @@ -0,0 +1,76 @@ +/* + * TI SATA platform driver + * + * (C) Copyright 2013 + * Texas Instruments, <www.ti.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <ahci.h> +#include <scsi.h> +#include <asm/arch/clock.h> +#include <asm/arch/sata.h> +#include <sata.h> +#include <asm/io.h> +#include "pipe3-phy.h" + +static struct pipe3_dpll_map dpll_map_sata[] = { + {12000000, {1000, 7, 4, 6, 0} }, /* 12 MHz */ + {16800000, {714, 7, 4, 6, 0} }, /* 16.8 MHz */ + {19200000, {625, 7, 4, 6, 0} }, /* 19.2 MHz */ + {20000000, {600, 7, 4, 6, 0} }, /* 20 MHz */ + {26000000, {461, 7, 4, 6, 0} }, /* 26 MHz */ + {38400000, {312, 7, 4, 6, 0} }, /* 38.4 MHz */ + { }, /* Terminator */ +}; + +struct omap_pipe3 sata_phy = { + .pll_ctrl_base = (void __iomem *)TI_SATA_PLLCTRL_BASE, + /* .power_reg is updated at runtime */ + .dpll_map = dpll_map_sata, +}; + +int init_sata(int dev) +{ + int ret; + u32 val; + + u32 const clk_domains_sata[] = { + 0 + }; + + u32 const clk_modules_hw_auto_sata[] = { + (*prcm)->cm_l3init_ocp2scp3_clkctrl, + 0 + }; + + u32 const clk_modules_explicit_en_sata[] = { + (*prcm)->cm_l3init_sata_clkctrl, + 0 + }; + + do_enable_clocks(clk_domains_sata, + clk_modules_hw_auto_sata, + clk_modules_explicit_en_sata, + 0); + + /* Enable optional functional clock for SATA */ + setbits_le32((*prcm)->cm_l3init_sata_clkctrl, + SATA_CLKCTRL_OPTFCLKEN_MASK); + + sata_phy.power_reg = (void __iomem *)(*ctrl)->control_phy_power_sata; + + /* Power up the PHY */ + phy_pipe3_power_on(&sata_phy); + + /* Enable SATA module, No Idle, No Standby */ + val = TI_SATA_IDLE_NO | TI_SATA_STANDBY_NO; + writel(val, TI_SATA_WRAPPER_BASE + TI_SATA_SYSCONFIG); + + ret = ahci_init(DWC_AHSATA_BASE); + scsi_scan(1); + + return ret; +} diff --git a/roms/u-boot/arch/arm/cpu/armv7/omap-common/timer.c b/roms/u-boot/arch/arm/cpu/armv7/omap-common/timer.c new file mode 100644 index 00000000..7c9924dc --- /dev/null +++ b/roms/u-boot/arch/arm/cpu/armv7/omap-common/timer.c @@ -0,0 +1,108 @@ +/* + * (C) Copyright 2008 + * Texas Instruments + * + * Richard Woodruff <r-woodruff2@ti.com> + * Syed Moahmmed Khasim <khasim@ti.com> + * + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH <www.elinos.com> + * Marius Groeger <mgroeger@sysgo.de> + * Alex Zuepke <azu@sysgo.de> + * + * (C) Copyright 2002 + * Gary Jennejohn, DENX Software Engineering, <garyj@denx.de> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/cpu.h> +#include <asm/arch/clock.h> + +DECLARE_GLOBAL_DATA_PTR; + +static struct gptimer *timer_base = (struct gptimer *)CONFIG_SYS_TIMERBASE; + +/* + * Nothing really to do with interrupts, just starts up a counter. + */ + +#define TIMER_CLOCK (V_SCLK / (2 << CONFIG_SYS_PTV)) +#define TIMER_OVERFLOW_VAL 0xffffffff +#define TIMER_LOAD_VAL 0 + +int timer_init(void) +{ + /* start the counter ticking up, reload value on overflow */ + writel(TIMER_LOAD_VAL, &timer_base->tldr); + /* enable timer */ + writel((CONFIG_SYS_PTV << 2) | TCLR_PRE | TCLR_AR | TCLR_ST, + &timer_base->tclr); + + /* reset time, capture current incrementer value time */ + gd->arch.lastinc = readl(&timer_base->tcrr) / + (TIMER_CLOCK / CONFIG_SYS_HZ); + gd->arch.tbl = 0; /* start "advancing" time stamp from 0 */ + + return 0; +} + +/* + * timer without interrupts + */ +ulong get_timer(ulong base) +{ + return get_timer_masked() - base; +} + +/* delay x useconds */ +void __udelay(unsigned long usec) +{ + long tmo = usec * (TIMER_CLOCK / 1000) / 1000; + unsigned long now, last = readl(&timer_base->tcrr); + + while (tmo > 0) { + now = readl(&timer_base->tcrr); + if (last > now) /* count up timer overflow */ + tmo -= TIMER_OVERFLOW_VAL - last + now + 1; + else + tmo -= now - last; + last = now; + } +} + +ulong get_timer_masked(void) +{ + /* current tick value */ + ulong now = readl(&timer_base->tcrr) / (TIMER_CLOCK / CONFIG_SYS_HZ); + + if (now >= gd->arch.lastinc) { /* normal mode (non roll) */ + /* move stamp fordward with absoulte diff ticks */ + gd->arch.tbl += (now - gd->arch.lastinc); + } else { /* we have rollover of incrementer */ + gd->arch.tbl += ((TIMER_LOAD_VAL / (TIMER_CLOCK / + CONFIG_SYS_HZ)) - gd->arch.lastinc) + now; + } + gd->arch.lastinc = now; + return gd->arch.tbl; +} + +/* + * This function is derived from PowerPC code (read timebase as long long). + * On ARM it just returns the timer value. + */ +unsigned long long get_ticks(void) +{ + return get_timer(0); +} + +/* + * This function is derived from PowerPC code (timebase clock frequency). + * On ARM it returns the number of timer ticks per second. + */ +ulong get_tbclk(void) +{ + return CONFIG_SYS_HZ; +} diff --git a/roms/u-boot/arch/arm/cpu/armv7/omap-common/u-boot-spl.lds b/roms/u-boot/arch/arm/cpu/armv7/omap-common/u-boot-spl.lds new file mode 100644 index 00000000..745603d0 --- /dev/null +++ b/roms/u-boot/arch/arm/cpu/armv7/omap-common/u-boot-spl.lds @@ -0,0 +1,56 @@ +/* + * (C) Copyright 2002 + * Gary Jennejohn, DENX Software Engineering, <garyj@denx.de> + * + * (C) Copyright 2010 + * Texas Instruments, <www.ti.com> + * Aneesh V <aneesh@ti.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +MEMORY { .sram : ORIGIN = CONFIG_SPL_TEXT_BASE,\ + LENGTH = CONFIG_SPL_MAX_SIZE } +MEMORY { .sdram : ORIGIN = CONFIG_SPL_BSS_START_ADDR, \ + LENGTH = CONFIG_SPL_BSS_MAX_SIZE } + +OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm") +OUTPUT_ARCH(arm) +ENTRY(_start) +SECTIONS +{ + .text : + { + __start = .; + arch/arm/cpu/armv7/start.o (.text*) + *(.text*) + } >.sram + + . = ALIGN(4); + .rodata : { *(SORT_BY_ALIGNMENT(.rodata*)) } >.sram + + . = ALIGN(4); + .data : { *(SORT_BY_ALIGNMENT(.data*)) } >.sram + + . = ALIGN(4); + .u_boot_list : { + KEEP(*(SORT(.u_boot_list*_i2c_*))); + } >.sram + + . = ALIGN(4); + __image_copy_end = .; + + .end : + { + *(.__end) + } + + .bss : + { + . = ALIGN(4); + __bss_start = .; + *(.bss*) + . = ALIGN(4); + __bss_end = .; + } >.sdram +} diff --git a/roms/u-boot/arch/arm/cpu/armv7/omap-common/utils.c b/roms/u-boot/arch/arm/cpu/armv7/omap-common/utils.c new file mode 100644 index 00000000..1696c2db --- /dev/null +++ b/roms/u-boot/arch/arm/cpu/armv7/omap-common/utils.c @@ -0,0 +1,62 @@ +/* + * Copyright 2011 Linaro Limited + * Aneesh V <aneesh@ti.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#include <common.h> +#include <asm/arch/sys_proto.h> +static void do_cancel_out(u32 *num, u32 *den, u32 factor) +{ + while (1) { + if (((*num)/factor*factor == (*num)) && + ((*den)/factor*factor == (*den))) { + (*num) /= factor; + (*den) /= factor; + } else + break; + } +} + +/* + * Cancel out the denominator and numerator of a fraction + * to get smaller numerator and denominator. + */ +void cancel_out(u32 *num, u32 *den, u32 den_limit) +{ + do_cancel_out(num, den, 2); + do_cancel_out(num, den, 3); + do_cancel_out(num, den, 5); + do_cancel_out(num, den, 7); + do_cancel_out(num, den, 11); + do_cancel_out(num, den, 13); + do_cancel_out(num, den, 17); + while ((*den) > den_limit) { + *num /= 2; + /* + * Round up the denominator so that the final fraction + * (num/den) is always <= the desired value + */ + *den = (*den + 1) / 2; + } +} + +void __weak usb_fake_mac_from_die_id(u32 *id) +{ + uint8_t device_mac[6]; + + if (!getenv("usbethaddr")) { + /* + * create a fake MAC address from the processor ID code. + * first byte is 0x02 to signify locally administered. + */ + device_mac[0] = 0x02; + device_mac[1] = id[3] & 0xff; + device_mac[2] = id[2] & 0xff; + device_mac[3] = id[1] & 0xff; + device_mac[4] = id[0] & 0xff; + device_mac[5] = (id[0] >> 8) & 0xff; + + eth_setenv_enetaddr("usbethaddr", device_mac); + } +} diff --git a/roms/u-boot/arch/arm/cpu/armv7/omap-common/vc.c b/roms/u-boot/arch/arm/cpu/armv7/omap-common/vc.c new file mode 100644 index 00000000..a68f1d14 --- /dev/null +++ b/roms/u-boot/arch/arm/cpu/armv7/omap-common/vc.c @@ -0,0 +1,151 @@ +/* + * Voltage Controller implementation for OMAP + * + * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/ + * Nishanth Menon + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <common.h> +#include <asm/omap_common.h> +#include <asm/arch/sys_proto.h> +#include <asm/arch/clock.h> + +/* + * Define Master code if there are multiple masters on the I2C_SR bus. + * Normally not required + */ +#ifndef CONFIG_OMAP_VC_I2C_HS_MCODE +#define CONFIG_OMAP_VC_I2C_HS_MCODE 0x0 +#endif + +/* Register defines and masks for VC IP Block */ +/* PRM_VC_CFG_I2C_MODE */ +#define PRM_VC_CFG_I2C_MODE_DFILTEREN_BIT (0x1 << 6) +#define PRM_VC_CFG_I2C_MODE_SRMODEEN_BIT (0x1 << 4) +#define PRM_VC_CFG_I2C_MODE_HSMODEEN_BIT (0x1 << 3) +#define PRM_VC_CFG_I2C_MODE_HSMCODE_SHIFT 0x0 +#define PRM_VC_CFG_I2C_MODE_HSMCODE_MASK 0x3 + +/* PRM_VC_CFG_I2C_CLK */ +#define PRM_VC_CFG_I2C_CLK_HSCLL_SHIFT 24 +#define PRM_VC_CFG_I2C_CLK_HSCLL_MASK 0xFF +#define PRM_VC_CFG_I2C_CLK_HSCLH_SHIFT 16 +#define PRM_VC_CFG_I2C_CLK_HSCLH_MASK 0xFF +#define PRM_VC_CFG_I2C_CLK_SCLH_SHIFT 0 +#define PRM_VC_CFG_I2C_CLK_SCLH_MASK 0xFF +#define PRM_VC_CFG_I2C_CLK_SCLL_SHIFT 8 +#define PRM_VC_CFG_I2C_CLK_SCLL_MASK (0xFF << 8) + +/* PRM_VC_VAL_BYPASS */ +#define PRM_VC_VAL_BYPASS_VALID_BIT (0x1 << 24) +#define PRM_VC_VAL_BYPASS_SLAVEADDR_SHIFT 0 +#define PRM_VC_VAL_BYPASS_SLAVEADDR_MASK 0x7F +#define PRM_VC_VAL_BYPASS_REGADDR_SHIFT 8 +#define PRM_VC_VAL_BYPASS_REGADDR_MASK 0xFF +#define PRM_VC_VAL_BYPASS_DATA_SHIFT 16 +#define PRM_VC_VAL_BYPASS_DATA_MASK 0xFF + +/** + * omap_vc_init() - Initialization for Voltage controller + * @speed_khz: I2C buspeed in KHz + */ +static void omap_vc_init(u16 speed_khz) +{ + u32 val; + u32 sys_clk_khz, cycles_hi, cycles_low; + + sys_clk_khz = get_sys_clk_freq() / 1000; + + if (speed_khz > 400) { + puts("higher speed requested - throttle to 400Khz\n"); + speed_khz = 400; + } + + /* + * Setup the dedicated I2C controller for Voltage Control + * I2C clk - high period 40% low period 60% + */ + speed_khz /= 10; + cycles_hi = sys_clk_khz * 4 / speed_khz; + cycles_low = sys_clk_khz * 6 / speed_khz; + /* values to be set in register - less by 5 & 7 respectively */ + cycles_hi -= 5; + cycles_low -= 7; + val = (cycles_hi << PRM_VC_CFG_I2C_CLK_SCLH_SHIFT) | + (cycles_low << PRM_VC_CFG_I2C_CLK_SCLL_SHIFT); + writel(val, (*prcm)->prm_vc_cfg_i2c_clk); + + val = CONFIG_OMAP_VC_I2C_HS_MCODE << + PRM_VC_CFG_I2C_MODE_HSMCODE_SHIFT; + /* No HS mode for now */ + val &= ~PRM_VC_CFG_I2C_MODE_HSMODEEN_BIT; + writel(val, (*prcm)->prm_vc_cfg_i2c_mode); +} + +/** + * omap_vc_bypass_send_value() - Send a data using VC Bypass command + * @sa: 7 bit I2C slave address of the PMIC + * @reg_addr: I2C register address(8 bit) address in PMIC + * @reg_data: what 8 bit data to write + */ +int omap_vc_bypass_send_value(u8 sa, u8 reg_addr, u8 reg_data) +{ + /* + * Unfortunately we need to loop here instead of a defined time + * use arbitary large value + */ + u32 timeout = 0xFFFF; + u32 reg_val; + + sa &= PRM_VC_VAL_BYPASS_SLAVEADDR_MASK; + reg_addr &= PRM_VC_VAL_BYPASS_REGADDR_MASK; + reg_data &= PRM_VC_VAL_BYPASS_DATA_MASK; + + /* program VC to send data */ + reg_val = sa << PRM_VC_VAL_BYPASS_SLAVEADDR_SHIFT | + reg_addr << PRM_VC_VAL_BYPASS_REGADDR_SHIFT | + reg_data << PRM_VC_VAL_BYPASS_DATA_SHIFT; + writel(reg_val, (*prcm)->prm_vc_val_bypass); + + /* Signal VC to send data */ + writel(reg_val | PRM_VC_VAL_BYPASS_VALID_BIT, + (*prcm)->prm_vc_val_bypass); + + /* Wait on VC to complete transmission */ + do { + reg_val = readl((*prcm)->prm_vc_val_bypass) & + PRM_VC_VAL_BYPASS_VALID_BIT; + if (!reg_val) + break; + + sdelay(100); + } while (--timeout); + + /* Optional: cleanup PRM_IRQSTATUS_Ax */ + /* In case we can do something about it in future.. */ + if (!timeout) + return -1; + + /* All good.. */ + return 0; +} + +void sri2c_init(void) +{ + static int sri2c = 1; + + if (sri2c) { + omap_vc_init(PRM_VC_I2C_CHANNEL_FREQ_KHZ); + sri2c = 0; + } + return; +} |