diff options
Diffstat (limited to 'qemu/roms/u-boot/board/amcc/walnut/flash.c')
| -rw-r--r-- | qemu/roms/u-boot/board/amcc/walnut/flash.c | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/board/amcc/walnut/flash.c b/qemu/roms/u-boot/board/amcc/walnut/flash.c new file mode 100644 index 000000000..cc0f4254a --- /dev/null +++ b/qemu/roms/u-boot/board/amcc/walnut/flash.c @@ -0,0 +1,183 @@ +/* + * (C) Copyright 2000-2005 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +/* + * Modified 4/5/2001 + * Wait for completion of each sector erase command issued + * 4/5/2001 + * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com + */ + +#include <common.h> +#include <asm/ppc4xx.h> +#include <asm/processor.h> + +#undef DEBUG +#ifdef DEBUG +#define DEBUGF(x...) printf(x) +#else +#define DEBUGF(x...) +#endif /* DEBUG */ + +/* + * include common flash code (for amcc boards) + */ +#include "../common/flash.c" + +/*----------------------------------------------------------------------- + * Functions + */ +static ulong flash_get_size(vu_long * addr, flash_info_t * info); +static void flash_get_offsets(ulong base, flash_info_t * info); + +unsigned long flash_init(void) +{ + unsigned long size_b0, size_b1; + int i; + uint pbcr; + unsigned long base_b0, base_b1; + + /* Init: no FLASHes known */ + for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) { + flash_info[i].flash_id = FLASH_UNKNOWN; + } + + /* Static FLASH Bank configuration here - FIXME XXX */ + + size_b0 = + flash_get_size((vu_long *) FLASH_BASE0_PRELIM, &flash_info[0]); + + if (flash_info[0].flash_id == FLASH_UNKNOWN) { + printf("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", + size_b0, size_b0 << 20); + } + + /* Only one bank */ + if (CONFIG_SYS_MAX_FLASH_BANKS == 1) { + /* Setup offsets */ + flash_get_offsets(FLASH_BASE0_PRELIM, &flash_info[0]); + + /* Monitor protection ON by default */ + (void)flash_protect(FLAG_PROTECT_SET, + CONFIG_SYS_MONITOR_BASE, + CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN - 1, + &flash_info[0]); +#ifdef CONFIG_ENV_IS_IN_FLASH + (void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR, + CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1, + &flash_info[0]); + (void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR_REDUND, + CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1, + &flash_info[0]); +#endif + + size_b1 = 0; + flash_info[0].size = size_b0; + } else { + /* 2 banks */ + size_b1 = + flash_get_size((vu_long *) FLASH_BASE1_PRELIM, + &flash_info[1]); + + /* Re-do sizing to get full correct info */ + + if (size_b1) { + mtdcr(EBC0_CFGADDR, PB0CR); + pbcr = mfdcr(EBC0_CFGDATA); + mtdcr(EBC0_CFGADDR, PB0CR); + base_b1 = -size_b1; + pbcr = + (pbcr & 0x0001ffff) | base_b1 | + (((size_b1 / 1024 / 1024) - 1) << 17); + mtdcr(EBC0_CFGDATA, pbcr); + /* printf("PB1CR = %x\n", pbcr); */ + } + + if (size_b0) { + mtdcr(EBC0_CFGADDR, PB1CR); + pbcr = mfdcr(EBC0_CFGDATA); + mtdcr(EBC0_CFGADDR, PB1CR); + base_b0 = base_b1 - size_b0; + pbcr = + (pbcr & 0x0001ffff) | base_b0 | + (((size_b0 / 1024 / 1024) - 1) << 17); + mtdcr(EBC0_CFGDATA, pbcr); + /* printf("PB0CR = %x\n", pbcr); */ + } + + size_b0 = flash_get_size((vu_long *) base_b0, &flash_info[0]); + + flash_get_offsets(base_b0, &flash_info[0]); + + /* monitor protection ON by default */ + (void)flash_protect(FLAG_PROTECT_SET, + base_b0 + size_b0 - monitor_flash_len, + base_b0 + size_b0 - 1, &flash_info[0]); + + if (size_b1) { + /* Re-do sizing to get full correct info */ + size_b1 = + flash_get_size((vu_long *) base_b1, &flash_info[1]); + + flash_get_offsets(base_b1, &flash_info[1]); + + /* monitor protection ON by default */ + (void)flash_protect(FLAG_PROTECT_SET, + base_b1 + size_b1 - + monitor_flash_len, + base_b1 + size_b1 - 1, + &flash_info[1]); + /* monitor protection OFF by default (one is enough) */ + (void)flash_protect(FLAG_PROTECT_CLEAR, + base_b0 + size_b0 - + monitor_flash_len, + base_b0 + size_b0 - 1, + &flash_info[0]); + } else { + flash_info[1].flash_id = FLASH_UNKNOWN; + flash_info[1].sector_count = -1; + } + + flash_info[0].size = size_b0; + flash_info[1].size = size_b1; + } /* else 2 banks */ + return (size_b0 + size_b1); +} + + +static void flash_get_offsets(ulong base, flash_info_t * info) +{ + int i; + + /* set up sector start address table */ + if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) || + (info->flash_id == FLASH_AM040)) { + for (i = 0; i < info->sector_count; i++) + info->start[i] = base + (i * 0x00010000); + } else { + if (info->flash_id & FLASH_BTYPE) { + /* set sector offsets for bottom boot block type */ + info->start[0] = base + 0x00000000; + info->start[1] = base + 0x00004000; + info->start[2] = base + 0x00006000; + info->start[3] = base + 0x00008000; + for (i = 4; i < info->sector_count; i++) { + info->start[i] = + base + (i * 0x00010000) - 0x00030000; + } + } else { + /* set sector offsets for top boot block type */ + i = info->sector_count - 1; + info->start[i--] = base + info->size - 0x00004000; + info->start[i--] = base + info->size - 0x00006000; + info->start[i--] = base + info->size - 0x00008000; + for (; i >= 0; i--) { + info->start[i] = base + i * 0x00010000; + } + } + } +} |