diff options
Diffstat (limited to 'roms/u-boot/arch/nds32/cpu/n1213/ag101')
-rw-r--r-- | roms/u-boot/arch/nds32/cpu/n1213/ag101/Makefile | 21 | ||||
-rw-r--r-- | roms/u-boot/arch/nds32/cpu/n1213/ag101/cpu.c | 68 | ||||
-rw-r--r-- | roms/u-boot/arch/nds32/cpu/n1213/ag101/lowlevel_init.S | 332 | ||||
-rw-r--r-- | roms/u-boot/arch/nds32/cpu/n1213/ag101/timer.c | 191 | ||||
-rw-r--r-- | roms/u-boot/arch/nds32/cpu/n1213/ag101/watchdog.S | 33 |
5 files changed, 645 insertions, 0 deletions
diff --git a/roms/u-boot/arch/nds32/cpu/n1213/ag101/Makefile b/roms/u-boot/arch/nds32/cpu/n1213/ag101/Makefile new file mode 100644 index 00000000..c21ce028 --- /dev/null +++ b/roms/u-boot/arch/nds32/cpu/n1213/ag101/Makefile @@ -0,0 +1,21 @@ +# +# (C) Copyright 2009 +# Marvell Semiconductor <www.marvell.com> +# Written-by: Prafulla Wadaskar <prafulla@marvell.com> +# +# Copyright (C) 2011 Andes Technology Corporation +# Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com> +# Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com> +# +# SPDX-License-Identifier: GPL-2.0+ +# + +obj-y := cpu.o timer.o + +ifndef CONFIG_SKIP_LOWLEVEL_INIT +obj-y += lowlevel_init.o +endif + +ifndef CONFIG_SKIP_TRUNOFF_WATCHDOG +obj-y += watchdog.o +endif diff --git a/roms/u-boot/arch/nds32/cpu/n1213/ag101/cpu.c b/roms/u-boot/arch/nds32/cpu/n1213/ag101/cpu.c new file mode 100644 index 00000000..31d72712 --- /dev/null +++ b/roms/u-boot/arch/nds32/cpu/n1213/ag101/cpu.c @@ -0,0 +1,68 @@ +/* + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH <www.elinos.com> + * Marius Groeger <mgroeger@sysgo.de> + * + * (C) Copyright 2002 + * Gary Jennejohn, DENX Software Engineering, <gj@denx.de> + * + * Copyright (C) 2011 Andes Technology Corporation + * Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com> + * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +/* CPU specific code */ +#include <common.h> +#include <command.h> +#include <watchdog.h> +#include <asm/cache.h> + +#include <faraday/ftwdt010_wdt.h> + +/* + * cleanup_before_linux() is called just before we call linux + * it prepares the processor for linux + * + * we disable interrupt and caches. + */ +int cleanup_before_linux(void) +{ + disable_interrupts(); + +#ifdef CONFIG_MMU + /* turn off I/D-cache */ + icache_disable(); + dcache_disable(); + + /* flush I/D-cache */ + invalidate_icac(); + invalidate_dcac(); +#endif + + return 0; +} + +int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + disable_interrupts(); + + /* + * reset to the base addr of andesboot. + * currently no ROM loader at addr 0. + * do not use reset_cpu(0); + */ +#ifdef CONFIG_FTWDT010_WATCHDOG + /* + * workaround: if we use CONFIG_HW_WATCHDOG with ftwdt010, will lead + * automatic hardware reset when booting Linux. + * Please do not use CONFIG_HW_WATCHDOG and WATCHDOG_RESET() here. + */ + ftwdt010_wdt_reset(); + while (1) + ; +#endif /* CONFIG_FTWDT010_WATCHDOG */ + + /*NOTREACHED*/ +} diff --git a/roms/u-boot/arch/nds32/cpu/n1213/ag101/lowlevel_init.S b/roms/u-boot/arch/nds32/cpu/n1213/ag101/lowlevel_init.S new file mode 100644 index 00000000..d6484b9c --- /dev/null +++ b/roms/u-boot/arch/nds32/cpu/n1213/ag101/lowlevel_init.S @@ -0,0 +1,332 @@ +/* + * Copyright (C) 2011 Andes Technology Corporation + * Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com> + * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +.text + +#include <common.h> +#include <config.h> + +#include <asm/macro.h> +#include <generated/asm-offsets.h> + +/* + * parameters for the SDRAM controller + */ +#define SDMC_TP1_A (CONFIG_FTSDMC021_BASE + FTSDMC021_TP1) +#define SDMC_TP2_A (CONFIG_FTSDMC021_BASE + FTSDMC021_TP2) +#define SDMC_CR1_A (CONFIG_FTSDMC021_BASE + FTSDMC021_CR1) +#define SDMC_CR2_A (CONFIG_FTSDMC021_BASE + FTSDMC021_CR2) +#define SDMC_B0_BSR_A (CONFIG_FTSDMC021_BASE + FTSDMC021_BANK0_BSR) +#define SDMC_B1_BSR_A (CONFIG_FTSDMC021_BASE + FTSDMC021_BANK1_BSR) + +#define SDMC_TP1_D CONFIG_SYS_FTSDMC021_TP1 +#define SDMC_TP2_D CONFIG_SYS_FTSDMC021_TP2 +#define SDMC_CR1_D CONFIG_SYS_FTSDMC021_CR1 +#define SDMC_CR2_D CONFIG_SYS_FTSDMC021_CR2 + +#define SDMC_B0_BSR_D CONFIG_SYS_FTSDMC021_BANK0_BSR +#define SDMC_B1_BSR_D CONFIG_SYS_FTSDMC021_BANK1_BSR + + +/* + * for Orca and Emerald + */ +#define BOARD_ID_REG 0x104 +#define BOARD_ID_FAMILY_MASK 0xfff000 +#define BOARD_ID_FAMILY_V5 0x556000 +#define BOARD_ID_FAMILY_K7 0x74b000 + +/* + * parameters for the static memory controller + */ +#define SMC_BANK0_CR_A (CONFIG_FTSMC020_BASE + FTSMC020_BANK0_CR) +#define SMC_BANK0_TPR_A (CONFIG_FTSMC020_BASE + FTSMC020_BANK0_TPR) + +#define SMC_BANK0_CR_D FTSMC020_BANK0_LOWLV_CONFIG +#define SMC_BANK0_TPR_D FTSMC020_BANK0_LOWLV_TIMING + +/* + * parameters for the ahbc controller + */ +#define AHBC_CR_A (CONFIG_FTAHBC020S_BASE + FTAHBC020S_CR) +#define AHBC_BSR6_A (CONFIG_FTAHBC020S_BASE + FTAHBC020S_SLAVE_BSR_6) + +/* + * for Orca and Emerald + */ +#define AHBC_BSR4_A (CONFIG_FTAHBC020S_BASE + FTAHBC020S_SLAVE_BSR_4) +#define AHBC_BSR6_D CONFIG_SYS_FTAHBC020S_SLAVE_BSR_6 + +/* + * parameters for the pmu controoler + */ +#define PMU_PDLLCR0_A (CONFIG_FTPMU010_BASE + FTPMU010_PDLLCR0) + +/* + * numeric 7 segment display + */ +.macro led, num + write32 CONFIG_DEBUG_LED, \num +.endm + +/* + * Waiting for SDRAM to set up + */ +.macro wait_sdram + li $r0, CONFIG_FTSDMC021_BASE +1: + lwi $r1, [$r0+FTSDMC021_CR2] + bnez $r1, 1b +.endm + +#ifndef CONFIG_SKIP_LOWLEVEL_INIT +.globl lowlevel_init +lowlevel_init: + move $r10, $lp + + led 0x0 + jal mem_init + + led 0x10 + jal remap + +#if (defined(NDS32_EXT_FPU_DP) || defined(NDS32_EXT_FPU_SP)) + led 0x1f + jal enable_fpu +#endif + + led 0x20 + ret $r10 + +mem_init: + move $r11, $lp + + /* + * mem_init: + * There are 2 bank connected to FTSMC020 on AG101 + * BANK0: FLASH/ROM (SW5, J16), BANK1: OnBoard SDRAM. + * we need to set onboard SDRAM before remap and relocation. + */ + led 0x01 + + /* + * for Orca and Emerald + * disable write protection and reset bank size + */ + li $r0, SMC_BANK0_CR_A + lwi $r1, [$r0+#0x00] + ori $r1, $r1, 0x8f0 + xori $r1, $r1, 0x8f0 + /* + * check board + */ + li $r3, CONFIG_FTPMU010_BASE + BOARD_ID_REG + lwi $r3, [$r3] + li $r4, BOARD_ID_FAMILY_MASK + and $r3, $r3, $r4 + li $r4, BOARD_ID_FAMILY_K7 + xor $r4, $r3, $r4 + beqz $r4, use_flash_16bit_boot + /* + * 32-bit mode + */ +use_flash_32bit_boot: + ori $r1, $r1, 0x50 + li $r2, 0x00151151 + j sdram_b0_cr + /* + * 16-bit mode + */ +use_flash_16bit_boot: + ori $r1, $r1, 0x60 + li $r2, 0x00153153 + /* + * SRAM bank0 config + */ +sdram_b0_cr: + swi $r1, [$r0+#0x00] + swi $r2, [$r0+#0x04] + + /* + * config AHB Controller + */ + led 0x02 + + /* + * config PMU controller + */ + /* ftpmu010_dlldis_disable, must do it in lowleve_init */ + led 0x03 + setbf32 PMU_PDLLCR0_A, FTPMU010_PDLLCR0_DLLDIS ! 0x00010000 + + /* + * config SDRAM controller + */ + led 0x04 + write32 SDMC_TP1_A, SDMC_TP1_D ! 0x00011312 + led 0x05 + write32 SDMC_TP2_A, SDMC_TP2_D ! 0x00480180 + led 0x06 + write32 SDMC_CR1_A, SDMC_CR1_D ! 0x00002326 + + led 0x07 + write32 SDMC_CR2_A, FTSDMC021_CR2_IPREC ! 0x00000010 + wait_sdram + + led 0x08 + write32 SDMC_CR2_A, FTSDMC021_CR2_ISMR ! 0x00000004 + wait_sdram + + led 0x09 + write32 SDMC_CR2_A, FTSDMC021_CR2_IREF ! 0x00000008 + wait_sdram + + led 0x0a + move $lp, $r11 + ret + +remap: + move $r11, $lp +#ifdef __NDS32_N1213_43U1H__ /* NDS32 V0 ISA - AG101 Only */ + bal 2f +relo_base: + move $r0, $lp +#else +relo_base: + mfusr $r0, $pc +#endif /* __NDS32_N1213_43U1H__ */ + + /* + * Remapping + */ + led 0x1a + write32 SDMC_B0_BSR_A, SDMC_B0_BSR_D ! 0x00001100 + write32 SDMC_B1_BSR_A, SDMC_B1_BSR_D ! 0x00001140 + + /* clear empty BSR registers */ + led 0x1b + li $r4, CONFIG_FTSDMC021_BASE + li $r5, 0x0 + swi $r5, [$r4 + FTSDMC021_BANK2_BSR] + swi $r5, [$r4 + FTSDMC021_BANK3_BSR] + +#ifdef CONFIG_MEM_REMAP + /* + * Copy ROM code to SDRAM base for memory remap layout. + * This is not the real relocation, the real relocation is the function + * relocate_code() is start.S which supports the systems is memory + * remapped or not. + */ + /* + * Doing memory remap is essential for preparing some non-OS or RTOS + * applications. + * + * This is also a must on ADP-AG101 board. + * The reason is because the ROM/FLASH circuit on PCB board. + * AG101-A0 board has 2 jumpers MA17 and SW5 to configure which + * ROM/FLASH is used to boot. + * + * When SW5 = "0101", MA17 = LO, the ROM is connected to BANK0, + * and the FLASH is connected to BANK1. + * When SW5 = "1010", MA17 = HI, the ROM is disabled (still at BANK0), + * and the FLASH is connected to BANK0. + * It will occur problem when doing flash probing if the flash is at + * BANK0 (0x00000000) while memory remapping was skipped. + * + * Other board like ADP-AG101P may not enable this since there is only + * a FLASH connected to bank0. + */ + led 0x11 + /* + * for Orca and Emerald + * read sdram base address automatically + */ + li $r5, AHBC_BSR6_A + lwi $r8, [$r5] + li $r4, 0xfff00000 + and $r4, $r4, $r8 + + + li $r5, 0x0 + la $r1, relo_base /* get $pc or $lp */ + sub $r2, $r0, $r1 + sethi $r6, hi20(_end) + ori $r6, $r6, lo12(_end) + add $r6, $r6, $r2 +1: + lwi.p $r7, [$r5], #4 + swi.p $r7, [$r4], #4 + blt $r5, $r6, 1b + + /* set remap bit */ + /* + * MEM remap bit is operational + * - use it to map writeable memory at 0x00000000, in place of flash + * - before remap: flash/rom 0x00000000, sdram: 0x10000000-0x4fffffff + * - after remap: flash/rom 0x80000000, sdram: 0x00000000 + */ + led 0x1c + write32 SDMC_B0_BSR_A, 0x00001000 + write32 SDMC_B1_BSR_A, 0x00001040 + setbf15 AHBC_CR_A, FTAHBC020S_CR_REMAP ! 0x1 + + /* + * for Orca and Emerald + * extend sdram size from 256MB to 2GB + */ + li $r5, AHBC_BSR6_A + lwi $r6, [$r5] + li $r4, 0xfff0ffff + and $r6 ,$r4 , $r6 + li $r4, 0x000b0000 + or $r6, $r4, $r6 + swi $r6, [$r5] + + /* + * for Orca and Emerald + * extend rom base from 256MB to 2GB + */ + li $r4, AHBC_BSR4_A + lwi $r5, [$r4] + li $r6, 0xffffff + and $r5, $r5, $r6 + li $r6, 0x80000000 + or $r5, $r5, $r6 + swi $r5, [$r4] +#endif /* #ifdef CONFIG_MEM_REMAP */ + move $lp, $r11 +2: + ret + + /* + * enable_fpu: + * Some of Andes CPU version support FPU coprocessor, if so, + * and toolchain support FPU instruction set, we should enable it. + */ +#if (defined(NDS32_EXT_FPU_DP) || defined(NDS32_EXT_FPU_SP)) +enable_fpu: + mfsr $r0, $CPU_VER /* enable FPU if it exists */ + srli $r0, $r0, 3 + andi $r0, $r0, 1 + beqz $r0, 1f /* skip if no COP */ + mfsr $r0, $FUCOP_EXIST + srli $r0, $r0, 31 + beqz $r0, 1f /* skip if no FPU */ + mfsr $r0, $FUCOP_CTL + ori $r0, $r0, 1 + mtsr $r0, $FUCOP_CTL +1: + ret +#endif + +.globl show_led +show_led: + li $r8, (CONFIG_DEBUG_LED) + swi $r7, [$r8] + ret +#endif /* #ifndef CONFIG_SKIP_LOWLEVEL_INIT */ diff --git a/roms/u-boot/arch/nds32/cpu/n1213/ag101/timer.c b/roms/u-boot/arch/nds32/cpu/n1213/ag101/timer.c new file mode 100644 index 00000000..758b3541 --- /dev/null +++ b/roms/u-boot/arch/nds32/cpu/n1213/ag101/timer.c @@ -0,0 +1,191 @@ +/* + * (C) Copyright 2009 Faraday Technology + * Po-Yu Chuang <ratbert@faraday-tech.com> + * + * Copyright (C) 2011 Andes Technology Corporation + * Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com> + * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <faraday/fttmr010.h> + +static ulong timestamp; +static ulong lastdec; + +int timer_init(void) +{ + struct fttmr010 *tmr = (struct fttmr010 *)CONFIG_FTTMR010_BASE; + unsigned int cr; + + debug("%s()\n", __func__); + + /* disable timers */ + writel(0, &tmr->cr); + +#ifdef CONFIG_FTTMR010_EXT_CLK + /* use 32768Hz oscillator for RTC, WDT, TIMER */ + ftpmu010_32768osc_enable(); +#endif + + /* setup timer */ + writel(TIMER_LOAD_VAL, &tmr->timer3_load); + writel(TIMER_LOAD_VAL, &tmr->timer3_counter); + writel(0, &tmr->timer3_match1); + writel(0, &tmr->timer3_match2); + + /* we don't want timer to issue interrupts */ + writel(FTTMR010_TM3_MATCH1 | + FTTMR010_TM3_MATCH2 | + FTTMR010_TM3_OVERFLOW, + &tmr->interrupt_mask); + + cr = readl(&tmr->cr); +#ifdef CONFIG_FTTMR010_EXT_CLK + cr |= FTTMR010_TM3_CLOCK; /* use external clock */ +#endif + cr |= FTTMR010_TM3_ENABLE; + writel(cr, &tmr->cr); + + /* init the timestamp and lastdec value */ + reset_timer_masked(); + + return 0; +} + +/* + * timer without interrupts + */ + +/* + * reset time + */ +void reset_timer_masked(void) +{ + struct fttmr010 *tmr = (struct fttmr010 *)CONFIG_FTTMR010_BASE; + + /* capure current decrementer value time */ +#ifdef CONFIG_FTTMR010_EXT_CLK + lastdec = readl(&tmr->timer3_counter) / (TIMER_CLOCK / CONFIG_SYS_HZ); +#else + lastdec = readl(&tmr->timer3_counter) / + (CONFIG_SYS_CLK_FREQ / 2 / CONFIG_SYS_HZ); +#endif + timestamp = 0; /* start "advancing" time stamp from 0 */ + + debug("%s(): lastdec = %lx\n", __func__, lastdec); +} + +void reset_timer(void) +{ + debug("%s()\n", __func__); + reset_timer_masked(); +} + +/* + * return timer ticks + */ +ulong get_timer_masked(void) +{ + struct fttmr010 *tmr = (struct fttmr010 *)CONFIG_FTTMR010_BASE; + + /* current tick value */ +#ifdef CONFIG_FTTMR010_EXT_CLK + ulong now = readl(&tmr->timer3_counter) / (TIMER_CLOCK / CONFIG_SYS_HZ); +#else + ulong now = readl(&tmr->timer3_counter) / + (CONFIG_SYS_CLK_FREQ / 2 / CONFIG_SYS_HZ); +#endif + + debug("%s(): now = %lx, lastdec = %lx\n", __func__, now, lastdec); + + if (lastdec >= now) { + /* + * normal mode (non roll) + * move stamp fordward with absoulte diff ticks + */ + timestamp += lastdec - now; + } else { + /* + * we have overflow of the count down timer + * + * nts = ts + ld + (TLV - now) + * ts=old stamp, ld=time that passed before passing through -1 + * (TLV-now) amount of time after passing though -1 + * nts = new "advancing time stamp"...it could also roll and + * cause problems. + */ + timestamp += lastdec + TIMER_LOAD_VAL - now; + } + + lastdec = now; + + debug("%s() returns %lx\n", __func__, timestamp); + + return timestamp; +} + +/* + * return difference between timer ticks and base + */ +ulong get_timer(ulong base) +{ + debug("%s(%lx)\n", __func__, base); + return get_timer_masked() - base; +} + +void set_timer(ulong t) +{ + debug("%s(%lx)\n", __func__, t); + timestamp = t; +} + +/* delay x useconds AND preserve advance timestamp value */ +void __udelay(unsigned long usec) +{ + struct fttmr010 *tmr = (struct fttmr010 *)CONFIG_FTTMR010_BASE; + +#ifdef CONFIG_FTTMR010_EXT_CLK + long tmo = usec * (TIMER_CLOCK / 1000) / 1000; +#else + long tmo = usec * ((CONFIG_SYS_CLK_FREQ / 2) / 1000) / 1000; +#endif + unsigned long now, last = readl(&tmr->timer3_counter); + + debug("%s(%lu)\n", __func__, usec); + while (tmo > 0) { + now = readl(&tmr->timer3_counter); + if (now > last) /* count down timer overflow */ + tmo -= TIMER_LOAD_VAL + last - now; + else + tmo -= last - now; + last = now; + } +} + +/* + * 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) +{ + debug("%s()\n", __func__); + 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) +{ + debug("%s()\n", __func__); +#ifdef CONFIG_FTTMR010_EXT_CLK + return CONFIG_SYS_HZ; +#else + return CONFIG_SYS_CLK_FREQ; +#endif +} diff --git a/roms/u-boot/arch/nds32/cpu/n1213/ag101/watchdog.S b/roms/u-boot/arch/nds32/cpu/n1213/ag101/watchdog.S new file mode 100644 index 00000000..8442241d --- /dev/null +++ b/roms/u-boot/arch/nds32/cpu/n1213/ag101/watchdog.S @@ -0,0 +1,33 @@ +/* + * Copyright (C) 2011 Andes Technology Corporation + * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <asm/arch-ag101/ag101.h> +#include <linux/linkage.h> + +.text + +#ifndef CONFIG_SKIP_TRUNOFF_WATCHDOG +ENTRY(turnoff_watchdog) + +#define WD_CR 0xC +#define WD_ENABLE 0x1 + + ! Turn off the watchdog, according to Faraday FTWDT010 spec + li $p0, (CONFIG_FTWDT010_BASE+WD_CR) ! Get the addr of WD CR + lwi $p1, [$p0] ! Get the config of WD + andi $p1, $p1, 0x1f ! Wipe out useless bits + li $r0, ~WD_ENABLE + and $p1, $p1, $r0 ! Set WD disable + sw $p1, [$p0] ! Write back to WD CR + + ! Disable Interrupts by clear GIE in $PSW reg + setgie.d + + ret + +ENDPROC(turnoff_watchdog) +#endif |