diff options
Diffstat (limited to 'roms/u-boot/arch/arm/cpu/armv7/omap-common/hwinit-common.c')
| -rw-r--r-- | roms/u-boot/arch/arm/cpu/armv7/omap-common/hwinit-common.c | 299 |
1 files changed, 299 insertions, 0 deletions
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 |