// SPDX-License-Identifier: GPL-2.0+ /* * (C) Copyright 2002-2004 * Brad Kemp, Seranoa Networks, Brad.Kemp@seranoa.com * * Copyright (C) 2003 Arabella Software Ltd. * Yuli Barcohen * * Copyright (C) 2004 * Ed Okerson * * Copyright (C) 2006 * Tolunay Orkun */ /* The DEBUG define must be before common to enable debugging */ /* #define DEBUG */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * This file implements a Common Flash Interface (CFI) driver for * U-Boot. * * The width of the port and the width of the chips are determined at * initialization. These widths are used to calculate the address for * access CFI data structures. * * References * JEDEC Standard JESD68 - Common Flash Interface (CFI) * JEDEC Standard JEP137-A Common Flash Interface (CFI) ID Codes * Intel Application Note 646 Common Flash Interface (CFI) and Command Sets * Intel 290667-008 3 Volt Intel StrataFlash Memory datasheet * AMD CFI Specification, Release 2.0 December 1, 2001 * AMD/Spansion Application Note: Migration from Single-byte to Three-byte * Device IDs, Publication Number 25538 Revision A, November 8, 2001 * * Define CFG_SYS_WRITE_SWAPPED_DATA, if you have to swap the Bytes between * reading and writing ... (yes there is such a Hardware). */ DECLARE_GLOBAL_DATA_PTR; static uint flash_offset_cfi[2] = { FLASH_OFFSET_CFI, FLASH_OFFSET_CFI_ALT }; #ifdef CONFIG_FLASH_CFI_MTD static uint flash_verbose = 1; #else #define flash_verbose 1 #endif flash_info_t flash_info[CFI_MAX_FLASH_BANKS]; /* FLASH chips info */ #ifdef CONFIG_CFI_FLASH_USE_WEAK_ACCESSORS #define __maybe_weak __weak #else #define __maybe_weak static #endif /* * 0xffff is an undefined value for the configuration register. When * this value is returned, the configuration register shall not be * written at all (default mode). */ static u16 cfi_flash_config_reg(int i) { #ifdef CONFIG_SYS_CFI_FLASH_CONFIG_REGS return ((u16 [])CONFIG_SYS_CFI_FLASH_CONFIG_REGS)[i]; #else return 0xffff; #endif } #if defined(CONFIG_SYS_MAX_FLASH_BANKS_DETECT) int cfi_flash_num_flash_banks = CFI_MAX_FLASH_BANKS; #else int cfi_flash_num_flash_banks; #endif #ifdef CONFIG_CFI_FLASH /* for driver model */ static void cfi_flash_init_dm(void) { struct udevice *dev; cfi_flash_num_flash_banks = 0; /* * The uclass_first_device() will probe the first device and * uclass_next_device() will probe the rest if they exist. So * that cfi_flash_probe() will get called assigning the base * addresses that are available. */ for (uclass_first_device(UCLASS_MTD, &dev); dev; uclass_next_device(&dev)) { } } phys_addr_t cfi_flash_bank_addr(int i) { return flash_info[i].base; } #else __weak phys_addr_t cfi_flash_bank_addr(int i) { return ((phys_addr_t [])CFG_SYS_FLASH_BANKS_LIST)[i]; } #endif __weak unsigned long cfi_flash_bank_size(int i) { #ifdef CFG_SYS_FLASH_BANKS_SIZES return ((unsigned long [])CFG_SYS_FLASH_BANKS_SIZES)[i]; #else return 0; #endif } __maybe_weak void flash_write8(u8 value, void *addr) { __raw_writeb(value, addr); } __maybe_weak void flash_write16(u16 value, void *addr) { __raw_writew(value, addr); } __maybe_weak void flash_write32(u32 value, void *addr) { __raw_writel(value, addr); } __maybe_weak void flash_write64(u64 value, void *addr) { /* No architectures currently implement __raw_writeq() */ *(volatile u64 *)addr = value; } __maybe_weak u8 flash_read8(void *addr) { return __raw_readb(addr); } __maybe_weak u16 flash_read16(void *addr) { return __raw_readw(addr); } __maybe_weak u32 flash_read32(void *addr) { return __raw_readl(addr); } __maybe_weak u64 flash_read64(void *addr) { /* No architectures currently implement __raw_readq() */ return *(volatile u64 *)addr; } /*----------------------------------------------------------------------- */ #if defined(CONFIG_ENV_IS_IN_FLASH) || defined(CONFIG_ENV_ADDR_REDUND) || \ (defined(CONFIG_SYS_MONITOR_BASE) && \ (CONFIG_SYS_MONITOR_BASE >= CFG_SYS_FLASH_BASE)) static flash_info_t *flash_get_info(ulong base) { int i; flash_info_t *info; for (i = 0; i < CFI_FLASH_BANKS; i++) { info = &flash_info[i]; if (info->size && info->start[0] <= base && base <= info->start[0] + info->size - 1) return info; } return NULL; } #endif unsigned long flash_sector_size(flash_info_t *info, flash_sect_t sect) { if (sect != (info->sector_count - 1)) return info->start[sect + 1] - info->start[sect]; else return info->start[0] + info->size - info->start[sect]; } /*----------------------------------------------------------------------- * create an address based on the offset and the port width */ static inline void * flash_map(flash_info_t *info, flash_sect_t sect, uint offset) { unsigned int byte_offset = offset * info->portwidth; return (void *)(info->start[sect] + (byte_offset << info->chip_lsb)); } static inline void flash_unmap(flash_info_t *info, flash_sect_t sect, unsigned int offset, void *addr) { } /*----------------------------------------------------------------------- * make a proper sized command based on the port and chip widths */ static void flash_make_cmd(flash_info_t *info, u32 cmd, void *cmdbuf) { int i; int cword_offset; int cp_offset; #if defined(__LITTLE_ENDIAN) || defined(CFG_SYS_WRITE_SWAPPED_DATA) u32 cmd_le = cpu_to_le32(cmd); #endif uchar val; uchar *cp = (uchar *) cmdbuf; for (i = info->portwidth; i > 0; i--) { cword_offset = (info->portwidth - i) % info->chipwidth; #if defined(__LITTLE_ENDIAN) || defined(CFG_SYS_WRITE_SWAPPED_DATA) cp_offset = info->portwidth - i; val = *((uchar *)&cmd_le + cword_offset); #else cp_offset = i - 1; val = *((uchar *)&cmd + sizeof(u32) - cword_offset - 1); #endif cp[cp_offset] = (cword_offset >= sizeof(u32)) ? 0x00 : val; } } #ifdef DEBUG /*----------------------------------------------------------------------- * Debug support */ static void print_longlong(char *str, unsigned long long data) { int i; char *cp; cp = (char *)&data; for (i = 0; i < 8; i++) sprintf(&str[i * 2], "%2.2x", *cp++); } static void flash_printqry(struct cfi_qry *qry) { u8 *p = (u8 *)qry; int x, y; for (x = 0; x < sizeof(struct cfi_qry); x += 16) { debug("%02x : ", x); for (y = 0; y < 16; y++) debug("%2.2x ", p[x + y]); debug(" "); for (y = 0; y < 16; y++) { unsigned char c = p[x + y]; if (c >= 0x20 && c <= 0x7e) debug("%c", c); else debug("."); } debug("\n"); } } #endif /*----------------------------------------------------------------------- * read a character at a port width address */ static inline uchar flash_read_uchar(flash_info_t *info, uint offset) { uchar *cp; uchar retval; cp = flash_map(info, 0, offset); #if defined(__LITTLE_ENDIAN) || defined(CFG_SYS_WRITE_SWAPPED_DATA) retval = flash_read8(cp); #else retval = flash_read8(cp + info->portwidth - 1); #endif flash_unmap(info, 0, offset, cp); return retval; } /*----------------------------------------------------------------------- * read a word at a port width address, assume 16bit bus */ static inline ushort flash_read_word(flash_info_t *info, uint offset) { ushort *addr, retval; addr = flash_map(info, 0, offset); retval = flash_read16(addr); flash_unmap(info, 0, offset, addr); return retval; } /*----------------------------------------------------------------------- * read a long word by picking the least significant byte of each maximum * port size word. Swap for ppc format. */ static ulong flash_read_long (flash_info_t *info, flash_sect_t sect, uint offset) { uchar *addr; ulong retval; #ifdef DEBUG int x; #endif addr = flash_map(info, sect, offset); #ifdef DEBUG debug("long addr is at %p info->portwidth = %d\n", addr, info->portwidth); for (x = 0; x < 4 * info->portwidth; x++) debug("addr[%x] = 0x%x\n", x, flash_read8(addr + x)); #endif #if defined(__LITTLE_ENDIAN) || defined(CFG_SYS_WRITE_SWAPPED_DATA) retval = ((flash_read8(addr) << 16) | (flash_read8(addr + info->portwidth) << 24) | (flash_read8(addr + 2 * info->portwidth)) | (flash_read8(addr + 3 * info->portwidth) << 8)); #else retval = ((flash_read8(addr + 2 * info->portwidth - 1) << 24) | (flash_read8(addr + info->portwidth - 1) << 16) | (flash_read8(addr + 4 * info->portwidth - 1) << 8) | (flash_read8(addr + 3 * info->portwidth - 1))); #endif flash_unmap(info, sect, offset, addr); return retval; } /* * Write a proper sized command to the correct address */ static void flash_write_cmd(flash_info_t *info, flash_sect_t sect, uint offset, u32 cmd) { void *addr; cfiword_t cword; addr = flash_map(info, sect, offset); flash_make_cmd(info, cmd, &cword); switch (info->portwidth) { case FLASH_CFI_8BIT: debug("fwc addr %p cmd %x %x 8bit x %d bit\n", addr, cmd, cword.w8, info->chipwidth << CFI_FLASH_SHIFT_WIDTH); flash_write8(cword.w8, addr); break; case FLASH_CFI_16BIT: debug("fwc addr %p cmd %x %4.4x 16bit x %d bit\n", addr, cmd, cword.w16, info->chipwidth << CFI_FLASH_SHIFT_WIDTH); flash_write16(cword.w16, addr); break; case FLASH_CFI_32BIT: debug("fwc addr %p cmd %x %8.8x 32bit x %d bit\n", addr, cmd, cword.w32, info->chipwidth << CFI_FLASH_SHIFT_WIDTH); flash_write32(cword.w32, addr); break; case FLASH_CFI_64BIT: #ifdef DEBUG { char str[20]; print_longlong(str, cword.w64); debug("fwrite addr %p cmd %x %s 64 bit x %d bit\n", addr, cmd, str, info->chipwidth << CFI_FLASH_SHIFT_WIDTH); } #endif flash_write64(cword.w64, addr); break; } /* Ensure all the instructions are fully finished */ sync(); flash_unmap(info, sect, offset, addr); } static void flash_unlock_seq(flash_info_t *info, flash_sect_t sect) { flash_write_cmd(info, sect, info->addr_unlock1, AMD_CMD_UNLOCK_START); flash_write_cmd(info, sect, info->addr_unlock2, AMD_CMD_UNLOCK_ACK); } /*----------------------------------------------------------------------- */ static int flash_isequal(flash_info_t *info, flash_sect_t sect, uint offset, uchar cmd) { void *addr; cfiword_t cword; int retval; addr = flash_map(info, sect, offset); flash_make_cmd(info, cmd, &cword); debug("is= cmd %x(%c) addr %p ", cmd, cmd, addr); switch (info->portwidth) { case FLASH_CFI_8BIT: debug("is= %x %x\n", flash_read8(addr), cword.w8); retval = (flash_read8(addr) == cword.w8); break; case FLASH_CFI_16BIT: debug("is= %4.4x %4.4x\n", flash_read16(addr), cword.w16); retval = (flash_read16(addr) == cword.w16); break; case FLASH_CFI_32BIT: debug("is= %8.8x %8.8x\n", flash_read32(addr), cword.w32); retval = (flash_read32(addr) == cword.w32); break; case FLASH_CFI_64BIT: #ifdef DEBUG { char str1[20]; char str2[20]; print_longlong(str1, flash_read64(addr)); print_longlong(str2, cword.w64); debug("is= %s %s\n", str1, str2); } #endif retval = (flash_read64(addr) == cword.w64); break; default: retval = 0; break; } flash_unmap(info, sect, offset, addr); return retval; } /*----------------------------------------------------------------------- */ static int flash_isset(flash_info_t *info, flash_sect_t sect, uint offset, uchar cmd) { void *addr; cfiword_t cword; int retval; addr = flash_map(info, sect, offset); flash_make_cmd(info, cmd, &cword); switch (info->portwidth) { case FLASH_CFI_8BIT: retval = ((flash_read8(addr) & cword.w8) == cword.w8); break; case FLASH_CFI_16BIT: retval = ((flash_read16(addr) & cword.w16) == cword.w16); break; case FLASH_CFI_32BIT: retval = ((flash_read32(addr) & cword.w32) == cword.w32); break; case FLASH_CFI_64BIT: retval = ((flash_read64(addr) & cword.w64) == cword.w64); break; default: retval = 0; break; } flash_unmap(info, sect, offset, addr); return retval; } /*----------------------------------------------------------------------- */ static int flash_toggle(flash_info_t *info, flash_sect_t sect, uint offset, uchar cmd) { u8 *addr; cfiword_t cword; int retval; addr = flash_map(info, sect, offset); flash_make_cmd(info, cmd, &cword); switch (info->portwidth) { case FLASH_CFI_8BIT: retval = flash_read8(addr) != flash_read8(addr); break; case FLASH_CFI_16BIT: retval = flash_read16(addr) != flash_read16(addr); break; case FLASH_CFI_32BIT: retval = flash_read32(addr) != flash_read32(addr); break; case FLASH_CFI_64BIT: retval = ((flash_read32(addr) != flash_read32(addr)) || (flash_read32(addr + 4) != flash_read32(addr + 4))); break; default: retval = 0; break; } flash_unmap(info, sect, offset, addr); return retval; } /* * flash_is_busy - check to see if the flash is busy * * This routine checks the status of the chip and returns true if the * chip is busy. */ static int flash_is_busy(flash_info_t *info, flash_sect_t sect) { int retval; switch (info->vendor) { case CFI_CMDSET_INTEL_PROG_REGIONS: case CFI_CMDSET_INTEL_STANDARD: case CFI_CMDSET_INTEL_EXTENDED: retval = !flash_isset(info, sect, 0, FLASH_STATUS_DONE); break; case CFI_CMDSET_AMD_STANDARD: case CFI_CMDSET_AMD_EXTENDED: #ifdef CONFIG_FLASH_CFI_LEGACY case CFI_CMDSET_AMD_LEGACY: #endif if (info->sr_supported) { flash_write_cmd(info, sect, info->addr_unlock1, FLASH_CMD_READ_STATUS); retval = !flash_isset(info, sect, 0, FLASH_STATUS_DONE); } else { retval = flash_toggle(info, sect, 0, AMD_STATUS_TOGGLE); } break; default: retval = 0; } debug("%s: %d\n", __func__, retval); return retval; } /*----------------------------------------------------------------------- * wait for XSR.7 to be set. Time out with an error if it does not. * This routine does not set the flash to read-array mode. */ static int flash_status_check(flash_info_t *info, flash_sect_t sector, ulong tout, char *prompt) { ulong start; #if CONFIG_SYS_HZ != 1000 /* Avoid overflow for large HZ */ if ((ulong)CONFIG_SYS_HZ > 100000) tout *= (ulong)CONFIG_SYS_HZ / 1000; else tout = DIV_ROUND_UP(tout * (ulong)CONFIG_SYS_HZ, 1000); #endif /* Wait for command completion */ #ifdef CFG_SYS_LOW_RES_TIMER reset_timer(); #endif start = get_timer(0); schedule(); while (flash_is_busy(info, sector)) { if (get_timer(start) > tout) { printf("Flash %s timeout at address %lx data %lx\n", prompt, info->start[sector], flash_read_long(info, sector, 0)); flash_write_cmd(info, sector, 0, info->cmd_reset); udelay(1); return ERR_TIMEOUT; } udelay(1); /* also triggers watchdog */ } return ERR_OK; } /*----------------------------------------------------------------------- * Wait for XSR.7 to be set, if it times out print an error, otherwise * do a full status check. * * This routine sets the flash to read-array mode. */ static int flash_full_status_check(flash_info_t *info, flash_sect_t sector, ulong tout, char *prompt) { int retcode; retcode = flash_status_check(info, sector, tout, prompt); switch (info->vendor) { case CFI_CMDSET_INTEL_PROG_REGIONS: case CFI_CMDSET_INTEL_EXTENDED: case CFI_CMDSET_INTEL_STANDARD: if (retcode == ERR_OK && !flash_isset(info, sector, 0, FLASH_STATUS_DONE)) { retcode = ERR_INVAL; printf("Flash %s error at address %lx\n", prompt, info->start[sector]); if (flash_isset(info, sector, 0, FLASH_STATUS_ECLBS | FLASH_STATUS_PSLBS)) { puts("Command Sequence Error.\n"); } else if (flash_isset(info, sector, 0, FLASH_STATUS_ECLBS)) { puts("Block Erase Error.\n"); retcode = ERR_NOT_ERASED; } else if (flash_isset(info, sector, 0, FLASH_STATUS_PSLBS)) { puts("Locking Error\n"); } if (flash_isset(info, sector, 0, FLASH_STATUS_DPS)) { puts("Block locked.\n"); retcode = ERR_PROTECTED; } if (flash_isset(info, sector, 0, FLASH_STATUS_VPENS)) puts("Vpp Low Error.\n"); } flash_write_cmd(info, sector, 0, info->cmd_reset); udelay(1); break; default: break; } return retcode; } static int use_flash_status_poll(flash_info_t *info) { #ifdef CONFIG_SYS_CFI_FLASH_STATUS_POLL if (info->vendor == CFI_CMDSET_AMD_EXTENDED || info->vendor == CFI_CMDSET_AMD_STANDARD) return 1; #endif return 0; } static int flash_status_poll(flash_info_t *info, void *src, void *dst, ulong tout, char *prompt) { #ifdef CONFIG_SYS_CFI_FLASH_STATUS_POLL ulong start; int ready; #if CONFIG_SYS_HZ != 1000 /* Avoid overflow for large HZ */ if ((ulong)CONFIG_SYS_HZ > 100000) tout *= (ulong)CONFIG_SYS_HZ / 1000; else tout = DIV_ROUND_UP(tout * (ulong)CONFIG_SYS_HZ, 1000); #endif /* Wait for command completion */ #ifdef CFG_SYS_LOW_RES_TIMER reset_timer(); #endif start = get_timer(0); schedule(); while (1) { switch (info->portwidth) { case FLASH_CFI_8BIT: ready = flash_read8(dst) == flash_read8(src); break; case FLASH_CFI_16BIT: ready = flash_read16(dst) == flash_read16(src); break; case FLASH_CFI_32BIT: ready = flash_read32(dst) == flash_read32(src); break; case FLASH_CFI_64BIT: ready = flash_read64(dst) == flash_read64(src); break; default: ready = 0; break; } if (ready) break; if (get_timer(start) > tout) { printf("Flash %s timeout at address %lx data %lx\n", prompt, (ulong)dst, (ulong)flash_read8(dst)); return ERR_TIMEOUT; } udelay(1); /* also triggers watchdog */ } #endif /* CONFIG_SYS_CFI_FLASH_STATUS_POLL */ return ERR_OK; } /*----------------------------------------------------------------------- */ static void flash_add_byte(flash_info_t *info, cfiword_t *cword, uchar c) { #if defined(__LITTLE_ENDIAN) && !defined(CFG_SYS_WRITE_SWAPPED_DATA) unsigned short w; unsigned int l; unsigned long long ll; #endif switch (info->portwidth) { case FLASH_CFI_8BIT: cword->w8 = c; break; case FLASH_CFI_16BIT: #if defined(__LITTLE_ENDIAN) && !defined(CFG_SYS_WRITE_SWAPPED_DATA) w = c; w <<= 8; cword->w16 = (cword->w16 >> 8) | w; #else cword->w16 = (cword->w16 << 8) | c; #endif break; case FLASH_CFI_32BIT: #if defined(__LITTLE_ENDIAN) && !defined(CFG_SYS_WRITE_SWAPPED_DATA) l = c; l <<= 24; cword->w32 = (cword->w32 >> 8) | l; #else cword->w32 = (cword->w32 << 8) | c; #endif break; case FLASH_CFI_64BIT: #if defined(__LITTLE_ENDIAN) && !defined(CFG_SYS_WRITE_SWAPPED_DATA) ll = c; ll <<= 56; cword->w64 = (cword->w64 >> 8) | ll; #else cword->w64 = (cword->w64 << 8) | c; #endif break; } } /* * Loop through the sector table starting from the previously found sector. * Searches forwards or backwards, dependent on the passed address. */ static flash_sect_t find_sector(flash_info_t *info, ulong addr) { static flash_sect_t saved_sector; /* previously found sector */ static flash_info_t *saved_info; /* previously used flash bank */ flash_sect_t sector = saved_sector; if (info != saved_info || sector >= info->sector_count) sector = 0; while ((sector < info->sector_count - 1) && (info->start[sector] < addr)) sector++; while ((info->start[sector] > addr) && (sector > 0)) /* * also decrements the sector in case of an overshot * in the first loop */ sector--; saved_sector = sector; saved_info = info; return sector; } /*----------------------------------------------------------------------- */ static int flash_write_cfiword(flash_info_t *info, ulong dest, cfiword_t cword) { void *dstaddr = (void *)dest; int flag; flash_sect_t sect = 0; char sect_found = 0; /* Check if Flash is (sufficiently) erased */ switch (info->portwidth) { case FLASH_CFI_8BIT: flag = ((flash_read8(dstaddr) & cword.w8) == cword.w8); break; case FLASH_CFI_16BIT: flag = ((flash_read16(dstaddr) & cword.w16) == cword.w16); break; case FLASH_CFI_32BIT: flag = ((flash_read32(dstaddr) & cword.w32) == cword.w32); break; case FLASH_CFI_64BIT: flag = ((flash_read64(dstaddr) & cword.w64) == cword.w64); break; default: flag = 0; break; } if (!flag) return ERR_NOT_ERASED; /* Disable interrupts which might cause a timeout here */ flag = disable_interrupts(); switch (info->vendor) { case CFI_CMDSET_INTEL_PROG_REGIONS: case CFI_CMDSET_INTEL_EXTENDED: case CFI_CMDSET_INTEL_STANDARD: flash_write_cmd(info, 0, 0, FLASH_CMD_CLEAR_STATUS); flash_write_cmd(info, 0, 0, FLASH_CMD_WRITE); break; case CFI_CMDSET_AMD_EXTENDED: case CFI_CMDSET_AMD_STANDARD: sect = find_sector(info, dest); flash_unlock_seq(info, sect); flash_write_cmd(info, sect, info->addr_unlock1, AMD_CMD_WRITE); sect_found = 1; break; #ifdef CONFIG_FLASH_CFI_LEGACY case CFI_CMDSET_AMD_LEGACY: sect = find_sector(info, dest); flash_unlock_seq(info, 0); flash_write_cmd(info, 0, info->addr_unlock1, AMD_CMD_WRITE); sect_found = 1; break; #endif } switch (info->portwidth) { case FLASH_CFI_8BIT: flash_write8(cword.w8, dstaddr); break; case FLASH_CFI_16BIT: flash_write16(cword.w16, dstaddr); break; case FLASH_CFI_32BIT: flash_write32(cword.w32, dstaddr); break; case FLASH_CFI_64BIT: flash_write64(cword.w64, dstaddr); break; } /* re-enable interrupts if necessary */ if (flag) enable_interrupts(); if (!sect_found) sect = find_sector(info, dest); if (use_flash_status_poll(info)) return flash_status_poll(info, &cword, dstaddr, info->write_tout, "write"); else return flash_full_status_check(info, sect, info->write_tout, "write"); } #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE static int flash_write_cfibuffer(flash_info_t *info, ulong dest, uchar *cp, int len) { flash_sect_t sector; int cnt; int retcode; u8 *src = cp; u8 *dst = (u8 *)dest; u8 *dst2 = dst; int flag = 1; uint offset = 0; unsigned int shift; uchar write_cmd; switch (info->portwidth) { case FLASH_CFI_8BIT: shift = 0; break; case FLASH_CFI_16BIT: shift = 1; break; case FLASH_CFI_32BIT: shift = 2; break; case FLASH_CFI_64BIT: shift = 3; break; default: retcode = ERR_INVAL; goto out_unmap; } cnt = len >> shift; while ((cnt-- > 0) && (flag == 1)) { switch (info->portwidth) { case FLASH_CFI_8BIT: flag = ((flash_read8(dst2) & flash_read8(src)) == flash_read8(src)); src += 1, dst2 += 1; break; case FLASH_CFI_16BIT: flag = ((flash_read16(dst2) & flash_read16(src)) == flash_read16(src)); src += 2, dst2 += 2; break; case FLASH_CFI_32BIT: flag = ((flash_read32(dst2) & flash_read32(src)) == flash_read32(src)); src += 4, dst2 += 4; break; case FLASH_CFI_64BIT: flag = ((flash_read64(dst2) & flash_read64(src)) == flash_read64(src)); src += 8, dst2 += 8; break; } } if (!flag) { retcode = ERR_NOT_ERASED; goto out_unmap; } src = cp; sector = find_sector(info, dest); switch (info->vendor) { case CFI_CMDSET_INTEL_PROG_REGIONS: case CFI_CMDSET_INTEL_STANDARD: case CFI_CMDSET_INTEL_EXTENDED: write_cmd = (info->vendor == CFI_CMDSET_INTEL_PROG_REGIONS) ? FLASH_CMD_WRITE_BUFFER_PROG : FLASH_CMD_WRITE_TO_BUFFER; flash_write_cmd(info, sector, 0, FLASH_CMD_CLEAR_STATUS); flash_write_cmd(info, sector, 0, FLASH_CMD_READ_STATUS); flash_write_cmd(info, sector, 0, write_cmd); retcode = flash_status_check(info, sector, info->buffer_write_tout, "write to buffer"); if (retcode == ERR_OK) { /* reduce the number of loops by the width of * the port */ cnt = len >> shift; flash_write_cmd(info, sector, 0, cnt - 1); while (cnt-- > 0) { switch (info->portwidth) { case FLASH_CFI_8BIT: flash_write8(flash_read8(src), dst); src += 1, dst += 1; break; case FLASH_CFI_16BIT: flash_write16(flash_read16(src), dst); src += 2, dst += 2; break; case FLASH_CFI_32BIT: flash_write32(flash_read32(src), dst); src += 4, dst += 4; break; case FLASH_CFI_64BIT: flash_write64(flash_read64(src), dst); src += 8, dst += 8; break; default: retcode = ERR_INVAL; goto out_unmap; } } flash_write_cmd(info, sector, 0, FLASH_CMD_WRITE_BUFFER_CONFIRM); retcode = flash_full_status_check( info, sector, info->buffer_write_tout, "buffer write"); } break; case CFI_CMDSET_AMD_STANDARD: case CFI_CMDSET_AMD_EXTENDED: flash_unlock_seq(info, sector); #ifdef CONFIG_FLASH_SPANSION_S29WS_N offset = ((unsigned long)dst - info->start[sector]) >> shift; #endif flash_write_cmd(info, sector, offset, AMD_CMD_WRITE_TO_BUFFER); cnt = len >> shift; flash_write_cmd(info, sector, offset, cnt - 1); switch (info->portwidth) { case FLASH_CFI_8BIT: while (cnt-- > 0) { flash_write8(flash_read8(src), dst); src += 1, dst += 1; } break; case FLASH_CFI_16BIT: while (cnt-- > 0) { flash_write16(flash_read16(src), dst); src += 2, dst += 2; } break; case FLASH_CFI_32BIT: while (cnt-- > 0) { flash_write32(flash_read32(src), dst); src += 4, dst += 4; } break; case FLASH_CFI_64BIT: while (cnt-- > 0) { flash_write64(flash_read64(src), dst); src += 8, dst += 8; } break; default: retcode = ERR_INVAL; goto out_unmap; } flash_write_cmd(info, sector, 0, AMD_CMD_WRITE_BUFFER_CONFIRM); if (use_flash_status_poll(info)) retcode = flash_status_poll(info, src - (1 << shift), dst - (1 << shift), info->buffer_write_tout, "buffer write"); else retcode = flash_full_status_check(info, sector, info->buffer_write_tout, "buffer write"); break; default: debug("Unknown Command Set\n"); retcode = ERR_INVAL; break; } out_unmap: return retcode; } #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */ /*----------------------------------------------------------------------- */ int flash_erase(flash_info_t *info, int s_first, int s_last) { int rcode = 0; int prot; flash_sect_t sect; int st; if (info->flash_id != FLASH_MAN_CFI) { puts("Can't erase unknown flash type - aborted\n"); return 1; } if (s_first < 0 || s_first > s_last) { puts("- no sectors to erase\n"); return 1; } prot = 0; for (sect = s_first; sect <= s_last; ++sect) if (info->protect[sect]) prot++; if (prot) { printf("- Warning: %d protected sectors will not be erased!\n", prot); } else if (flash_verbose) { putc('\n'); } for (sect = s_first; sect <= s_last; sect++) { if (ctrlc()) { printf("\n"); return 1; } if (info->protect[sect] == 0) { /* not protected */ #ifdef CONFIG_SYS_FLASH_CHECK_BLANK_BEFORE_ERASE int k; int size; int erased; u32 *flash; /* * Check if whole sector is erased */ size = flash_sector_size(info, sect); erased = 1; flash = (u32 *)info->start[sect]; /* divide by 4 for longword access */ size = size >> 2; for (k = 0; k < size; k++) { if (flash_read32(flash++) != 0xffffffff) { erased = 0; break; } } if (erased) { if (flash_verbose) putc(','); continue; } #endif switch (info->vendor) { case CFI_CMDSET_INTEL_PROG_REGIONS: case CFI_CMDSET_INTEL_STANDARD: case CFI_CMDSET_INTEL_EXTENDED: flash_write_cmd(info, sect, 0, FLASH_CMD_CLEAR_STATUS); flash_write_cmd(info, sect, 0, FLASH_CMD_BLOCK_ERASE); flash_write_cmd(info, sect, 0, FLASH_CMD_ERASE_CONFIRM); break; case CFI_CMDSET_AMD_STANDARD: case CFI_CMDSET_AMD_EXTENDED: flash_unlock_seq(info, sect); flash_write_cmd(info, sect, info->addr_unlock1, AMD_CMD_ERASE_START); flash_unlock_seq(info, sect); flash_write_cmd(info, sect, 0, info->cmd_erase_sector); break; #ifdef CONFIG_FLASH_CFI_LEGACY case CFI_CMDSET_AMD_LEGACY: flash_unlock_seq(info, 0); flash_write_cmd(info, 0, info->addr_unlock1, AMD_CMD_ERASE_START); flash_unlock_seq(info, 0); flash_write_cmd(info, sect, 0, AMD_CMD_ERASE_SECTOR); break; #endif default: debug("Unknown flash vendor %d\n", info->vendor); break; } if (use_flash_status_poll(info)) { cfiword_t cword; void *dest; cword.w64 = 0xffffffffffffffffULL; dest = flash_map(info, sect, 0); st = flash_status_poll(info, &cword, dest, info->erase_blk_tout, "erase"); flash_unmap(info, sect, 0, dest); } else { st = flash_full_status_check(info, sect, info->erase_blk_tout, "erase"); } if (st) rcode = 1; else if (flash_verbose) putc('.'); } } if (flash_verbose) puts(" done\n"); return rcode; } #ifdef CONFIG_SYS_FLASH_EMPTY_INFO static int sector_erased(flash_info_t *info, int i) { int k; int size; u32 *flash; /* * Check if whole sector is erased */ size = flash_sector_size(info, i); flash = (u32 *)info->start[i]; /* divide by 4 for longword access */ size = size >> 2; for (k = 0; k < size; k++) { if (flash_read32(flash++) != 0xffffffff) return 0; /* not erased */ } return 1; /* erased */ } #endif /* CONFIG_SYS_FLASH_EMPTY_INFO */ void flash_print_info(flash_info_t *info) { int i; if (info->flash_id != FLASH_MAN_CFI) { puts("missing or unknown FLASH type\n"); return; } printf("%s flash (%d x %d)", info->name, (info->portwidth << 3), (info->chipwidth << 3)); if (info->size < 1024 * 1024) printf(" Size: %ld kB in %d Sectors\n", info->size >> 10, info->sector_count); else printf(" Size: %ld MB in %d Sectors\n", info->size >> 20, info->sector_count); printf(" "); switch (info->vendor) { case CFI_CMDSET_INTEL_PROG_REGIONS: printf("Intel Prog Regions"); break; case CFI_CMDSET_INTEL_STANDARD: printf("Intel Standard"); break; case CFI_CMDSET_INTEL_EXTENDED: printf("Intel Extended"); break; case CFI_CMDSET_AMD_STANDARD: printf("AMD Standard"); break; case CFI_CMDSET_AMD_EXTENDED: printf("AMD Extended"); break; #ifdef CONFIG_FLASH_CFI_LEGACY case CFI_CMDSET_AMD_LEGACY: printf("AMD Legacy"); break; #endif default: printf("Unknown (%d)", info->vendor); break; } printf(" command set, Manufacturer ID: 0x%02X, Device ID: 0x", info->manufacturer_id); printf(info->chipwidth == FLASH_CFI_16BIT ? "%04X" : "%02X", info->device_id); if ((info->device_id & 0xff) == 0x7E) { printf(info->chipwidth == FLASH_CFI_16BIT ? "%04X" : "%02X", info->device_id2); } if (info->vendor == CFI_CMDSET_AMD_STANDARD && info->legacy_unlock) printf("\n Advanced Sector Protection (PPB) enabled"); printf("\n Erase timeout: %ld ms, write timeout: %ld ms\n", info->erase_blk_tout, info->write_tout); if (info->buffer_size > 1) { printf(" Buffer write timeout: %ld ms, ", info->buffer_write_tout); printf("buffer size: %d bytes\n", info->buffer_size); } puts("\n Sector Start Addresses:"); for (i = 0; i < info->sector_count; ++i) { if (ctrlc()) break; if ((i % 5) == 0) putc('\n'); #ifdef CONFIG_SYS_FLASH_EMPTY_INFO /* print empty and read-only info */ printf(" %08lX %c %s ", info->start[i], sector_erased(info, i) ? 'E' : ' ', info->protect[i] ? "RO" : " "); #else /* ! CONFIG_SYS_FLASH_EMPTY_INFO */ printf(" %08lX %s ", info->start[i], info->protect[i] ? "RO" : " "); #endif } putc('\n'); } /*----------------------------------------------------------------------- * This is used in a few places in write_buf() to show programming * progress. Making it a function is nasty because it needs to do side * effect updates to digit and dots. Repeated code is nasty too, so * we define it once here. */ #ifdef CONFIG_FLASH_SHOW_PROGRESS #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub) \ if (flash_verbose) { \ dots -= dots_sub; \ if (scale > 0 && dots <= 0) { \ if ((digit % 5) == 0) \ printf("%d", digit / 5); \ else \ putc('.'); \ digit--; \ dots += scale; \ } \ } #else #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub) #endif /*----------------------------------------------------------------------- * Copy memory to flash, returns: * 0 - OK * 1 - write timeout * 2 - Flash not erased */ int write_buff(flash_info_t *info, uchar *src, ulong addr, ulong cnt) { ulong wp; uchar *p; int aln; cfiword_t cword; int i, rc; #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE int buffered_size; #endif #ifdef CONFIG_FLASH_SHOW_PROGRESS int digit = CONFIG_FLASH_SHOW_PROGRESS; int scale = 0; int dots = 0; /* * Suppress if there are fewer than CONFIG_FLASH_SHOW_PROGRESS writes. */ if (cnt >= CONFIG_FLASH_SHOW_PROGRESS) { scale = (int)((cnt + CONFIG_FLASH_SHOW_PROGRESS - 1) / CONFIG_FLASH_SHOW_PROGRESS); } #endif /* get lower aligned address */ wp = (addr & ~(info->portwidth - 1)); /* handle unaligned start */ aln = addr - wp; if (aln != 0) { cword.w32 = 0; p = (uchar *)wp; for (i = 0; i < aln; ++i) flash_add_byte(info, &cword, flash_read8(p + i)); for (; (i < info->portwidth) && (cnt > 0); i++) { flash_add_byte(info, &cword, *src++); cnt--; } for (; (cnt == 0) && (i < info->portwidth); ++i) flash_add_byte(info, &cword, flash_read8(p + i)); rc = flash_write_cfiword(info, wp, cword); if (rc != 0) return rc; wp += i; FLASH_SHOW_PROGRESS(scale, dots, digit, i); } /* handle the aligned part */ #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE buffered_size = (info->portwidth / info->chipwidth); buffered_size *= info->buffer_size; while (cnt >= info->portwidth) { /* prohibit buffer write when buffer_size is 1 */ if (info->buffer_size == 1) { cword.w32 = 0; for (i = 0; i < info->portwidth; i++) flash_add_byte(info, &cword, *src++); rc = flash_write_cfiword(info, wp, cword); if (rc != 0) return rc; wp += info->portwidth; cnt -= info->portwidth; continue; } /* write buffer until next buffered_size aligned boundary */ i = buffered_size - (wp % buffered_size); if (i > cnt) i = cnt; rc = flash_write_cfibuffer(info, wp, src, i); if (rc != ERR_OK) return rc; i -= i & (info->portwidth - 1); wp += i; src += i; cnt -= i; FLASH_SHOW_PROGRESS(scale, dots, digit, i); /* Only check every once in a while */ if ((cnt & 0xFFFF) < buffered_size && ctrlc()) return ERR_ABORTED; } #else while (cnt >= info->portwidth) { cword.w32 = 0; for (i = 0; i < info->portwidth; i++) flash_add_byte(info, &cword, *src++); rc = flash_write_cfiword(info, wp, cword); if (rc != 0) return rc; wp += info->portwidth; cnt -= info->portwidth; FLASH_SHOW_PROGRESS(scale, dots, digit, info->portwidth); /* Only check every once in a while */ if ((cnt & 0xFFFF) < info->portwidth && ctrlc()) return ERR_ABORTED; } #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */ if (cnt == 0) return (0); /* * handle unaligned tail bytes */ cword.w32 = 0; p = (uchar *)wp; for (i = 0; (i < info->portwidth) && (cnt > 0); ++i) { flash_add_byte(info, &cword, *src++); --cnt; } for (; i < info->portwidth; ++i) flash_add_byte(info, &cword, flash_read8(p + i)); return flash_write_cfiword(info, wp, cword); } static inline int manufact_match(flash_info_t *info, u32 manu) { return info->manufacturer_id == ((manu & FLASH_VENDMASK) >> 16); } /*----------------------------------------------------------------------- */ #ifdef CONFIG_SYS_FLASH_PROTECTION static int cfi_protect_bugfix(flash_info_t *info, long sector, int prot) { if (manufact_match(info, INTEL_MANUFACT) && info->device_id == NUMONYX_256MBIT) { /* * see errata called * "Numonyx Axcell P33/P30 Specification Update" :) */ flash_write_cmd(info, sector, 0, FLASH_CMD_READ_ID); if (!flash_isequal(info, sector, FLASH_OFFSET_PROTECT, prot)) { /* * cmd must come before FLASH_CMD_PROTECT + 20us * Disable interrupts which might cause a timeout here. */ int flag = disable_interrupts(); unsigned short cmd; if (prot) cmd = FLASH_CMD_PROTECT_SET; else cmd = FLASH_CMD_PROTECT_CLEAR; flash_write_cmd(info, sector, 0, FLASH_CMD_PROTECT); flash_write_cmd(info, sector, 0, cmd); /* re-enable interrupts if necessary */ if (flag) enable_interrupts(); } return 1; } return 0; } int flash_real_protect(flash_info_t *info, long sector, int prot) { int retcode = 0; switch (info->vendor) { case CFI_CMDSET_INTEL_PROG_REGIONS: case CFI_CMDSET_INTEL_STANDARD: case CFI_CMDSET_INTEL_EXTENDED: if (!cfi_protect_bugfix(info, sector, prot)) { flash_write_cmd(info, sector, 0, FLASH_CMD_CLEAR_STATUS); flash_write_cmd(info, sector, 0, FLASH_CMD_PROTECT); if (prot) flash_write_cmd(info, sector, 0, FLASH_CMD_PROTECT_SET); else flash_write_cmd(info, sector, 0, FLASH_CMD_PROTECT_CLEAR); } break; case CFI_CMDSET_AMD_EXTENDED: case CFI_CMDSET_AMD_STANDARD: /* U-Boot only checks the first byte */ if (manufact_match(info, ATM_MANUFACT)) { if (prot) { flash_unlock_seq(info, 0); flash_write_cmd(info, 0, info->addr_unlock1, ATM_CMD_SOFTLOCK_START); flash_unlock_seq(info, 0); flash_write_cmd(info, sector, 0, ATM_CMD_LOCK_SECT); } else { flash_write_cmd(info, 0, info->addr_unlock1, AMD_CMD_UNLOCK_START); if (info->device_id == ATM_ID_BV6416) flash_write_cmd(info, sector, 0, ATM_CMD_UNLOCK_SECT); } } if (info->legacy_unlock) { int flag = disable_interrupts(); int lock_flag; flash_unlock_seq(info, 0); flash_write_cmd(info, 0, info->addr_unlock1, AMD_CMD_SET_PPB_ENTRY); lock_flag = flash_isset(info, sector, 0, 0x01); if (prot) { if (lock_flag) { flash_write_cmd(info, sector, 0, AMD_CMD_PPB_LOCK_BC1); flash_write_cmd(info, sector, 0, AMD_CMD_PPB_LOCK_BC2); } debug("sector %ld %slocked\n", sector, lock_flag ? "" : "already "); } else { if (!lock_flag) { debug("unlock %ld\n", sector); flash_write_cmd(info, 0, 0, AMD_CMD_PPB_UNLOCK_BC1); flash_write_cmd(info, 0, 0, AMD_CMD_PPB_UNLOCK_BC2); } debug("sector %ld %sunlocked\n", sector, !lock_flag ? "" : "already "); } if (flag) enable_interrupts(); if (flash_status_check(info, sector, info->erase_blk_tout, prot ? "protect" : "unprotect")) printf("status check error\n"); flash_write_cmd(info, 0, 0, AMD_CMD_SET_PPB_EXIT_BC1); flash_write_cmd(info, 0, 0, AMD_CMD_SET_PPB_EXIT_BC2); } break; #ifdef CONFIG_FLASH_CFI_LEGACY case CFI_CMDSET_AMD_LEGACY: flash_write_cmd(info, sector, 0, FLASH_CMD_CLEAR_STATUS); flash_write_cmd(info, sector, 0, FLASH_CMD_PROTECT); if (prot) flash_write_cmd(info, sector, 0, FLASH_CMD_PROTECT_SET); else flash_write_cmd(info, sector, 0, FLASH_CMD_PROTECT_CLEAR); #endif }; /* * Flash needs to be in status register read mode for * flash_full_status_check() to work correctly */ flash_write_cmd(info, sector, 0, FLASH_CMD_READ_STATUS); retcode = flash_full_status_check(info, sector, info->erase_blk_tout, prot ? "protect" : "unprotect"); if (retcode == 0) { info->protect[sector] = prot; /* * On some of Intel's flash chips (marked via legacy_unlock) * unprotect unprotects all locking. */ if (prot == 0 && info->legacy_unlock) { flash_sect_t i; for (i = 0; i < info->sector_count; i++) { if (info->protect[i]) flash_real_protect(info, i, 1); } } } return retcode; } /*----------------------------------------------------------------------- * flash_read_user_serial - read the OneTimeProgramming cells */ void flash_read_user_serial(flash_info_t *info, void *buffer, int offset, int len) { uchar *src; uchar *dst; dst = buffer; src = flash_map(info, 0, FLASH_OFFSET_USER_PROTECTION); flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID); memcpy(dst, src + offset, len); flash_write_cmd(info, 0, 0, info->cmd_reset); udelay(1); flash_unmap(info, 0, FLASH_OFFSET_USER_PROTECTION, src); } /* * flash_read_factory_serial - read the device Id from the protection area */ void flash_read_factory_serial(flash_info_t *info, void *buffer, int offset, int len) { uchar *src; src = flash_map(info, 0, FLASH_OFFSET_INTEL_PROTECTION); flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID); memcpy(buffer, src + offset, len); flash_write_cmd(info, 0, 0, info->cmd_reset); udelay(1); flash_unmap(info, 0, FLASH_OFFSET_INTEL_PROTECTION, src); } #endif /* CONFIG_SYS_FLASH_PROTECTION */ /*----------------------------------------------------------------------- * Reverse the order of the erase regions in the CFI QRY structure. * This is needed for chips that are either a) correctly detected as * top-boot, or b) buggy. */ static void cfi_reverse_geometry(struct cfi_qry *qry) { unsigned int i, j; u32 tmp; for (i = 0, j = qry->num_erase_regions - 1; i < j; i++, j--) { tmp = get_unaligned(&qry->erase_region_info[i]); put_unaligned(get_unaligned(&qry->erase_region_info[j]), &qry->erase_region_info[i]); put_unaligned(tmp, &qry->erase_region_info[j]); } } /*----------------------------------------------------------------------- * read jedec ids from device and set corresponding fields in info struct * * Note: assume cfi->vendor, cfi->portwidth and cfi->chipwidth are correct * */ static void cmdset_intel_read_jedec_ids(flash_info_t *info) { flash_write_cmd(info, 0, 0, FLASH_CMD_RESET); udelay(1); flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID); udelay(1000); /* some flash are slow to respond */ info->manufacturer_id = flash_read_uchar(info, FLASH_OFFSET_MANUFACTURER_ID); info->device_id = (info->chipwidth == FLASH_CFI_16BIT) ? flash_read_word(info, FLASH_OFFSET_DEVICE_ID) : flash_read_uchar(info, FLASH_OFFSET_DEVICE_ID); flash_write_cmd(info, 0, 0, FLASH_CMD_RESET); } static int cmdset_intel_init(flash_info_t *info, struct cfi_qry *qry) { info->cmd_reset = FLASH_CMD_RESET; cmdset_intel_read_jedec_ids(info); flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI); #ifdef CONFIG_SYS_FLASH_PROTECTION /* read legacy lock/unlock bit from intel flash */ if (info->ext_addr) { info->legacy_unlock = flash_read_uchar(info, info->ext_addr + 5) & 0x08; } #endif return 0; } static void cmdset_amd_read_jedec_ids(flash_info_t *info) { ushort bank_id = 0; uchar manu_id; uchar feature; flash_write_cmd(info, 0, 0, AMD_CMD_RESET); flash_unlock_seq(info, 0); flash_write_cmd(info, 0, info->addr_unlock1, FLASH_CMD_READ_ID); udelay(1000); /* some flash are slow to respond */ manu_id = flash_read_uchar(info, FLASH_OFFSET_MANUFACTURER_ID); /* JEDEC JEP106Z specifies ID codes up to bank 7 */ while (manu_id == FLASH_CONTINUATION_CODE && bank_id < 0x800) { bank_id += 0x100; manu_id = flash_read_uchar(info, bank_id | FLASH_OFFSET_MANUFACTURER_ID); } info->manufacturer_id = manu_id; debug("info->ext_addr = 0x%x, cfi_version = 0x%x\n", info->ext_addr, info->cfi_version); if (info->ext_addr && info->cfi_version >= 0x3134) { /* read software feature (at 0x53) */ feature = flash_read_uchar(info, info->ext_addr + 0x13); debug("feature = 0x%x\n", feature); info->sr_supported = feature & 0x1; } switch (info->chipwidth) { case FLASH_CFI_8BIT: info->device_id = flash_read_uchar(info, FLASH_OFFSET_DEVICE_ID); if (info->device_id == 0x7E) { /* AMD 3-byte (expanded) device ids */ info->device_id2 = flash_read_uchar(info, FLASH_OFFSET_DEVICE_ID2); info->device_id2 <<= 8; info->device_id2 |= flash_read_uchar(info, FLASH_OFFSET_DEVICE_ID3); } break; case FLASH_CFI_16BIT: info->device_id = flash_read_word(info, FLASH_OFFSET_DEVICE_ID); if ((info->device_id & 0xff) == 0x7E) { /* AMD 3-byte (expanded) device ids */ info->device_id2 = flash_read_uchar(info, FLASH_OFFSET_DEVICE_ID2); info->device_id2 <<= 8; info->device_id2 |= flash_read_uchar(info, FLASH_OFFSET_DEVICE_ID3); } break; default: break; } flash_write_cmd(info, 0, 0, AMD_CMD_RESET); udelay(1); } static int cmdset_amd_init(flash_info_t *info, struct cfi_qry *qry) { info->cmd_reset = AMD_CMD_RESET; info->cmd_erase_sector = AMD_CMD_ERASE_SECTOR; cmdset_amd_read_jedec_ids(info); flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI); #ifdef CONFIG_SYS_FLASH_PROTECTION if (info->ext_addr) { /* read sector protect/unprotect scheme (at 0x49) */ if (flash_read_uchar(info, info->ext_addr + 9) == 0x8) info->legacy_unlock = 1; } #endif return 0; } #ifdef CONFIG_FLASH_CFI_LEGACY static void flash_read_jedec_ids(flash_info_t *info) { info->manufacturer_id = 0; info->device_id = 0; info->device_id2 = 0; switch (info->vendor) { case CFI_CMDSET_INTEL_PROG_REGIONS: case CFI_CMDSET_INTEL_STANDARD: case CFI_CMDSET_INTEL_EXTENDED: cmdset_intel_read_jedec_ids(info); break; case CFI_CMDSET_AMD_STANDARD: case CFI_CMDSET_AMD_EXTENDED: cmdset_amd_read_jedec_ids(info); break; default: break; } } /*----------------------------------------------------------------------- * Call board code to request info about non-CFI flash. * board_flash_get_legacy needs to fill in at least: * info->portwidth, info->chipwidth and info->interface for Jedec probing. */ static int flash_detect_legacy(phys_addr_t base, int banknum) { flash_info_t *info = &flash_info[banknum]; if (board_flash_get_legacy(base, banknum, info)) { /* board code may have filled info completely. If not, we * use JEDEC ID probing. */ if (!info->vendor) { int modes[] = { CFI_CMDSET_AMD_STANDARD, CFI_CMDSET_INTEL_STANDARD }; int i; for (i = 0; i < ARRAY_SIZE(modes); i++) { info->vendor = modes[i]; info->start[0] = (ulong)map_physmem(base, info->portwidth, MAP_NOCACHE); if (info->portwidth == FLASH_CFI_8BIT && info->interface == FLASH_CFI_X8X16) { info->addr_unlock1 = 0x2AAA; info->addr_unlock2 = 0x5555; } else { info->addr_unlock1 = 0x5555; info->addr_unlock2 = 0x2AAA; } flash_read_jedec_ids(info); debug("JEDEC PROBE: ID %x %x %x\n", info->manufacturer_id, info->device_id, info->device_id2); if (jedec_flash_match(info, info->start[0])) break; unmap_physmem((void *)info->start[0], info->portwidth); } } switch (info->vendor) { case CFI_CMDSET_INTEL_PROG_REGIONS: case CFI_CMDSET_INTEL_STANDARD: case CFI_CMDSET_INTEL_EXTENDED: info->cmd_reset = FLASH_CMD_RESET; break; case CFI_CMDSET_AMD_STANDARD: case CFI_CMDSET_AMD_EXTENDED: case CFI_CMDSET_AMD_LEGACY: info->cmd_reset = AMD_CMD_RESET; break; } info->flash_id = FLASH_MAN_CFI; return 1; } return 0; /* use CFI */ } #else static inline int flash_detect_legacy(phys_addr_t base, int banknum) { return 0; /* use CFI */ } #endif /*----------------------------------------------------------------------- * detect if flash is compatible with the Common Flash Interface (CFI) * http://www.jedec.org/download/search/jesd68.pdf */ static void flash_read_cfi(flash_info_t *info, void *buf, unsigned int start, size_t len) { u8 *p = buf; unsigned int i; for (i = 0; i < len; i++) p[i] = flash_read_uchar(info, start + i); } static void __flash_cmd_reset(flash_info_t *info) { /* * We do not yet know what kind of commandset to use, so we issue * the reset command in both Intel and AMD variants, in the hope * that AMD flash roms ignore the Intel command. */ flash_write_cmd(info, 0, 0, AMD_CMD_RESET); udelay(1); flash_write_cmd(info, 0, 0, FLASH_CMD_RESET); } void flash_cmd_reset(flash_info_t *info) __attribute__((weak, alias("__flash_cmd_reset"))); static int __flash_detect_cfi(flash_info_t *info, struct cfi_qry *qry) { int cfi_offset; /* Issue FLASH reset command */ flash_cmd_reset(info); for (cfi_offset = 0; cfi_offset < ARRAY_SIZE(flash_offset_cfi); cfi_offset++) { flash_write_cmd(info, 0, flash_offset_cfi[cfi_offset], FLASH_CMD_CFI); if (flash_isequal(info, 0, FLASH_OFFSET_CFI_RESP, 'Q') && flash_isequal(info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R') && flash_isequal(info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) { flash_read_cfi(info, qry, FLASH_OFFSET_CFI_RESP, sizeof(struct cfi_qry)); info->interface = le16_to_cpu(qry->interface_desc); /* Some flash chips can support multiple bus widths. * In this case, override the interface width and * limit it to the port width. */ if ((info->interface == FLASH_CFI_X8X16) && (info->portwidth == FLASH_CFI_8BIT)) { debug("Overriding 16-bit interface width to" " 8-bit port width\n"); info->interface = FLASH_CFI_X8; } else if ((info->interface == FLASH_CFI_X16X32) && (info->portwidth == FLASH_CFI_16BIT)) { debug("Overriding 16-bit interface width to" " 16-bit port width\n"); info->interface = FLASH_CFI_X16; } info->cfi_offset = flash_offset_cfi[cfi_offset]; debug("device interface is %d\n", info->interface); debug("found port %d chip %d chip_lsb %d ", info->portwidth, info->chipwidth, info->chip_lsb); debug("port %d bits chip %d bits\n", info->portwidth << CFI_FLASH_SHIFT_WIDTH, info->chipwidth << CFI_FLASH_SHIFT_WIDTH); /* calculate command offsets as in the Linux driver */ info->addr_unlock1 = 0x555; info->addr_unlock2 = 0x2aa; /* * modify the unlock address if we are * in compatibility mode */ if (/* x8/x16 in x8 mode */ (info->chipwidth == FLASH_CFI_BY8 && info->interface == FLASH_CFI_X8X16) || /* x16/x32 in x16 mode */ (info->chipwidth == FLASH_CFI_BY16 && info->interface == FLASH_CFI_X16X32)) { info->addr_unlock1 = 0xaaa; info->addr_unlock2 = 0x555; } info->name = "CFI conformant"; return 1; } } return 0; } static int flash_detect_cfi(flash_info_t *info, struct cfi_qry *qry) { debug("flash detect cfi\n"); for (info->portwidth = CONFIG_SYS_FLASH_CFI_WIDTH; info->portwidth <= FLASH_CFI_64BIT; info->portwidth <<= 1) { for (info->chipwidth = FLASH_CFI_BY8; info->chipwidth <= info->portwidth; info->chipwidth <<= 1) { /* * First, try detection without shifting the addresses * for 8bit devices (16bit wide connection) */ info->chip_lsb = 0; if (__flash_detect_cfi(info, qry)) return 1; /* * Not detected, so let's try with shifting * for 8bit devices */ info->chip_lsb = 1; if (__flash_detect_cfi(info, qry)) return 1; } } debug("not found\n"); return 0; } /* * Manufacturer-specific quirks. Add workarounds for geometry * reversal, etc. here. */ static void flash_fixup_amd(flash_info_t *info, struct cfi_qry *qry) { /* check if flash geometry needs reversal */ if (qry->num_erase_regions > 1) { /* reverse geometry if top boot part */ if (info->cfi_version < 0x3131) { /* CFI < 1.1, try to guess from device id */ if ((info->device_id & 0x80) != 0) cfi_reverse_geometry(qry); } else if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) { /* CFI >= 1.1, deduct from top/bottom flag */ /* note: ext_addr is valid since cfi_version > 0 */ cfi_reverse_geometry(qry); } } } static void flash_fixup_atmel(flash_info_t *info, struct cfi_qry *qry) { int reverse_geometry = 0; /* Check the "top boot" bit in the PRI */ if (info->ext_addr && !(flash_read_uchar(info, info->ext_addr + 6) & 1)) reverse_geometry = 1; /* AT49BV6416(T) list the erase regions in the wrong order. * However, the device ID is identical with the non-broken * AT49BV642D they differ in the high byte. */ if (info->device_id == 0xd6 || info->device_id == 0xd2) reverse_geometry = !reverse_geometry; if (reverse_geometry) cfi_reverse_geometry(qry); } static void flash_fixup_stm(flash_info_t *info, struct cfi_qry *qry) { /* check if flash geometry needs reversal */ if (qry->num_erase_regions > 1) { /* reverse geometry if top boot part */ if (info->cfi_version < 0x3131) { /* CFI < 1.1, guess by device id */ if (info->device_id == 0x22CA || /* M29W320DT */ info->device_id == 0x2256 || /* M29W320ET */ info->device_id == 0x22D7) { /* M29W800DT */ cfi_reverse_geometry(qry); } } else if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) { /* CFI >= 1.1, deduct from top/bottom flag */ /* note: ext_addr is valid since cfi_version > 0 */ cfi_reverse_geometry(qry); } } } static void flash_fixup_sst(flash_info_t *info, struct cfi_qry *qry) { /* * SST, for many recent nor parallel flashes, says they are * CFI-conformant. This is not true, since qry struct. * reports a std. AMD command set (0x0002), while SST allows to * erase two different sector sizes for the same memory. * 64KB sector (SST call it block) needs 0x30 to be erased. * 4KB sector (SST call it sector) needs 0x50 to be erased. * Since CFI query detect the 4KB number of sectors, users expects * a sector granularity of 4KB, and it is here set. */ if (info->device_id == 0x5D23 || /* SST39VF3201B */ info->device_id == 0x5C23) { /* SST39VF3202B */ /* set sector granularity to 4KB */ info->cmd_erase_sector = 0x50; } } static void flash_fixup_num(flash_info_t *info, struct cfi_qry *qry) { /* * The M29EW devices seem to report the CFI information wrong * when it's in 8 bit mode. * There's an app note from Numonyx on this issue. * So adjust the buffer size for M29EW while operating in 8-bit mode */ if (qry->max_buf_write_size > 0x8 && info->device_id == 0x7E && (info->device_id2 == 0x2201 || info->device_id2 == 0x2301 || info->device_id2 == 0x2801 || info->device_id2 == 0x4801)) { debug("Adjusted buffer size on Numonyx flash"); debug(" M29EW family in 8 bit mode\n"); qry->max_buf_write_size = 0x8; } } /* * The following code cannot be run from FLASH! * */ ulong flash_get_size(phys_addr_t base, int banknum) { flash_info_t *info = &flash_info[banknum]; int i, j; flash_sect_t sect_cnt; phys_addr_t sector; unsigned long tmp; int size_ratio; uchar num_erase_regions; int erase_region_size; int erase_region_count; struct cfi_qry qry; unsigned long max_size; memset(&qry, 0, sizeof(qry)); info->ext_addr = 0; info->cfi_version = 0; #ifdef CONFIG_SYS_FLASH_PROTECTION info->legacy_unlock = 0; #endif info->start[0] = (ulong)map_physmem(base, info->portwidth, MAP_NOCACHE); if (flash_detect_cfi(info, &qry)) { info->vendor = le16_to_cpu(get_unaligned(&qry.p_id)); info->ext_addr = le16_to_cpu(get_unaligned(&qry.p_adr)); num_erase_regions = qry.num_erase_regions; if (info->ext_addr) { info->cfi_version = (ushort)flash_read_uchar(info, info->ext_addr + 3) << 8; info->cfi_version |= (ushort)flash_read_uchar(info, info->ext_addr + 4); } #ifdef DEBUG flash_printqry(&qry); #endif switch (info->vendor) { case CFI_CMDSET_INTEL_PROG_REGIONS: case CFI_CMDSET_INTEL_STANDARD: case CFI_CMDSET_INTEL_EXTENDED: cmdset_intel_init(info, &qry); break; case CFI_CMDSET_AMD_STANDARD: case CFI_CMDSET_AMD_EXTENDED: cmdset_amd_init(info, &qry); break; default: printf("CFI: Unknown command set 0x%x\n", info->vendor); /* * Unfortunately, this means we don't know how * to get the chip back to Read mode. Might * as well try an Intel-style reset... */ flash_write_cmd(info, 0, 0, FLASH_CMD_RESET); return 0; } /* Do manufacturer-specific fixups */ switch (info->manufacturer_id) { case 0x0001: /* AMD */ case 0x0037: /* AMIC */ flash_fixup_amd(info, &qry); break; case 0x001f: flash_fixup_atmel(info, &qry); break; case 0x0020: flash_fixup_stm(info, &qry); break; case 0x00bf: /* SST */ flash_fixup_sst(info, &qry); break; case 0x0089: /* Numonyx */ flash_fixup_num(info, &qry); break; } debug("manufacturer is %d\n", info->vendor); debug("manufacturer id is 0x%x\n", info->manufacturer_id); debug("device id is 0x%x\n", info->device_id); debug("device id2 is 0x%x\n", info->device_id2); debug("cfi version is 0x%04x\n", info->cfi_version); size_ratio = info->portwidth / info->chipwidth; /* if the chip is x8/x16 reduce the ratio by half */ if (info->interface == FLASH_CFI_X8X16 && info->chipwidth == FLASH_CFI_BY8) { size_ratio >>= 1; } debug("size_ratio %d port %d bits chip %d bits\n", size_ratio, info->portwidth << CFI_FLASH_SHIFT_WIDTH, info->chipwidth << CFI_FLASH_SHIFT_WIDTH); info->size = 1 << qry.dev_size; /* multiply the size by the number of chips */ info->size *= size_ratio; max_size = cfi_flash_bank_size(banknum); if (max_size && info->size > max_size) { debug("[truncated from %ldMiB]", info->size >> 20); info->size = max_size; } debug("found %d erase regions\n", num_erase_regions); sect_cnt = 0; sector = base; for (i = 0; i < num_erase_regions; i++) { if (i > NUM_ERASE_REGIONS) { printf("%d erase regions found, only %d used\n", num_erase_regions, NUM_ERASE_REGIONS); break; } tmp = le32_to_cpu(get_unaligned( &qry.erase_region_info[i])); debug("erase region %u: 0x%08lx\n", i, tmp); erase_region_count = (tmp & 0xffff) + 1; tmp >>= 16; erase_region_size = (tmp & 0xffff) ? ((tmp & 0xffff) * 256) : 128; debug("erase_region_count = %d ", erase_region_count); debug("erase_region_size = %d\n", erase_region_size); for (j = 0; j < erase_region_count; j++) { if (sector - base >= info->size) break; if (sect_cnt >= CONFIG_SYS_MAX_FLASH_SECT) { printf("ERROR: too many flash sectors\n"); break; } info->start[sect_cnt] = (ulong)map_physmem(sector, info->portwidth, MAP_NOCACHE); sector += (erase_region_size * size_ratio); /* * Only read protection status from * supported devices (intel...) */ switch (info->vendor) { case CFI_CMDSET_INTEL_PROG_REGIONS: case CFI_CMDSET_INTEL_EXTENDED: case CFI_CMDSET_INTEL_STANDARD: /* * Set flash to read-id mode. Otherwise * reading protected status is not * guaranteed. */ flash_write_cmd(info, sect_cnt, 0, FLASH_CMD_READ_ID); info->protect[sect_cnt] = flash_isset(info, sect_cnt, FLASH_OFFSET_PROTECT, FLASH_STATUS_PROTECT); flash_write_cmd(info, sect_cnt, 0, FLASH_CMD_RESET); break; case CFI_CMDSET_AMD_EXTENDED: case CFI_CMDSET_AMD_STANDARD: if (!info->legacy_unlock) { /* default: not protected */ info->protect[sect_cnt] = 0; break; } /* Read protection (PPB) from sector */ flash_write_cmd(info, 0, 0, info->cmd_reset); flash_unlock_seq(info, 0); flash_write_cmd(info, 0, info->addr_unlock1, AMD_CMD_SET_PPB_ENTRY); info->protect[sect_cnt] = !flash_isset(info, sect_cnt, 0, 0x01); flash_write_cmd(info, 0, 0, info->cmd_reset); break; default: /* default: not protected */ info->protect[sect_cnt] = 0; } sect_cnt++; } } info->sector_count = sect_cnt; info->buffer_size = 1 << le16_to_cpu(qry.max_buf_write_size); tmp = 1 << qry.block_erase_timeout_typ; info->erase_blk_tout = tmp * (1 << qry.block_erase_timeout_max); tmp = (1 << qry.buf_write_timeout_typ) * (1 << qry.buf_write_timeout_max); /* round up when converting to ms */ info->buffer_write_tout = (tmp + 999) / 1000; tmp = (1 << qry.word_write_timeout_typ) * (1 << qry.word_write_timeout_max); /* round up when converting to ms */ info->write_tout = (tmp + 999) / 1000; info->flash_id = FLASH_MAN_CFI; if (info->interface == FLASH_CFI_X8X16 && info->chipwidth == FLASH_CFI_BY8) { /* XXX - Need to test on x8/x16 in parallel. */ info->portwidth >>= 1; } flash_write_cmd(info, 0, 0, info->cmd_reset); } return (info->size); } #ifdef CONFIG_FLASH_CFI_MTD void flash_set_verbose(uint v) { flash_verbose = v; } #endif static void cfi_flash_set_config_reg(u32 base, u16 val) { #ifdef CONFIG_SYS_CFI_FLASH_CONFIG_REGS /* * Only set this config register if really defined * to a valid value (0xffff is invalid) */ if (val == 0xffff) return; /* * Set configuration register. Data is "encrypted" in the 16 lower * address bits. */ flash_write16(FLASH_CMD_SETUP, (void *)(base + (val << 1))); flash_write16(FLASH_CMD_SET_CR_CONFIRM, (void *)(base + (val << 1))); /* * Finally issue reset-command to bring device back to * read-array mode */ flash_write16(FLASH_CMD_RESET, (void *)base); #endif } /*----------------------------------------------------------------------- */ static void flash_protect_default(void) { #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST) int i; struct apl_s { ulong start; ulong size; } apl[] = CONFIG_SYS_FLASH_AUTOPROTECT_LIST; #endif /* Monitor protection ON by default */ #if defined(CONFIG_SYS_MONITOR_BASE) && \ (CONFIG_SYS_MONITOR_BASE >= CFG_SYS_FLASH_BASE) && \ (!defined(CONFIG_MONITOR_IS_IN_RAM)) flash_protect(FLAG_PROTECT_SET, CONFIG_SYS_MONITOR_BASE, CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1, flash_get_info(CONFIG_SYS_MONITOR_BASE)); #endif /* Environment protection ON by default */ #ifdef CONFIG_ENV_IS_IN_FLASH flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR, CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1, flash_get_info(CONFIG_ENV_ADDR)); #endif /* Redundant environment protection ON by default */ #ifdef CONFIG_ENV_ADDR_REDUND flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR_REDUND, CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1, flash_get_info(CONFIG_ENV_ADDR_REDUND)); #endif #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST) for (i = 0; i < ARRAY_SIZE(apl); i++) { debug("autoprotecting from %08lx to %08lx\n", apl[i].start, apl[i].start + apl[i].size - 1); flash_protect(FLAG_PROTECT_SET, apl[i].start, apl[i].start + apl[i].size - 1, flash_get_info(apl[i].start)); } #endif } unsigned long flash_init(void) { unsigned long size = 0; int i; #ifdef CONFIG_SYS_FLASH_PROTECTION /* read environment from EEPROM */ char s[64]; env_get_f("unlock", s, sizeof(s)); #endif #ifdef CONFIG_CFI_FLASH /* for driver model */ cfi_flash_init_dm(); #endif /* Init: no FLASHes known */ for (i = 0; i < CFI_FLASH_BANKS; ++i) { flash_info[i].flash_id = FLASH_UNKNOWN; /* Optionally write flash configuration register */ cfi_flash_set_config_reg(cfi_flash_bank_addr(i), cfi_flash_config_reg(i)); if (!flash_detect_legacy(cfi_flash_bank_addr(i), i)) flash_get_size(cfi_flash_bank_addr(i), i); size += flash_info[i].size; if (flash_info[i].flash_id == FLASH_UNKNOWN) { #ifndef CONFIG_SYS_FLASH_QUIET_TEST printf("## Unknown flash on Bank %d ", i + 1); printf("- Size = 0x%08lx = %ld MB\n", flash_info[i].size, flash_info[i].size >> 20); #endif /* CONFIG_SYS_FLASH_QUIET_TEST */ } #ifdef CONFIG_SYS_FLASH_PROTECTION else if (strcmp(s, "yes") == 0) { /* * Only the U-Boot image and it's environment * is protected, all other sectors are * unprotected (unlocked) if flash hardware * protection is used (CONFIG_SYS_FLASH_PROTECTION) * and the environment variable "unlock" is * set to "yes". */ if (flash_info[i].legacy_unlock) { int k; /* * Disable legacy_unlock temporarily, * since flash_real_protect would * relock all other sectors again * otherwise. */ flash_info[i].legacy_unlock = 0; /* * Legacy unlocking (e.g. Intel J3) -> * unlock only one sector. This will * unlock all sectors. */ flash_real_protect(&flash_info[i], 0, 0); flash_info[i].legacy_unlock = 1; /* * Manually mark other sectors as * unlocked (unprotected) */ for (k = 1; k < flash_info[i].sector_count; k++) flash_info[i].protect[k] = 0; } else { /* * No legancy unlocking -> unlock all sectors */ flash_protect(FLAG_PROTECT_CLEAR, flash_info[i].start[0], flash_info[i].start[0] + flash_info[i].size - 1, &flash_info[i]); } } #endif /* CONFIG_SYS_FLASH_PROTECTION */ } flash_protect_default(); #ifdef CONFIG_FLASH_CFI_MTD cfi_mtd_init(); #endif return (size); } #ifdef CONFIG_CFI_FLASH /* for driver model */ static int cfi_flash_probe(struct udevice *dev) { fdt_addr_t addr; int idx; for (idx = 0; idx < CFI_MAX_FLASH_BANKS; idx++) { addr = dev_read_addr_index(dev, idx); if (addr == FDT_ADDR_T_NONE) break; flash_info[cfi_flash_num_flash_banks].dev = dev; flash_info[cfi_flash_num_flash_banks].base = addr; cfi_flash_num_flash_banks++; } gd->bd->bi_flashstart = flash_info[0].base; return 0; } static const struct udevice_id cfi_flash_ids[] = { { .compatible = "cfi-flash" }, { .compatible = "jedec-flash" }, {} }; U_BOOT_DRIVER(cfi_flash) = { .name = "cfi_flash", .id = UCLASS_MTD, .of_match = cfi_flash_ids, .probe = cfi_flash_probe, }; #endif /* CONFIG_CFI_FLASH */