/* * (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 * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA * */ /* The DEBUG define must be before common to enable debugging */ /* #define DEBUG */ #include #include #include #include #include #ifdef CFG_FLASH_CFI_DRIVER /* * 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_WRITE_SWAPPED_DATA, if you have to swap the Bytes between * reading and writing ... (yes there is such a Hardware). */ #ifndef CFG_FLASH_BANKS_LIST #define CFG_FLASH_BANKS_LIST { CFG_FLASH_BASE } #endif #define FLASH_CMD_CFI 0x98 #define FLASH_CMD_READ_ID 0x90 #define FLASH_CMD_RESET 0xff #define FLASH_CMD_BLOCK_ERASE 0x20 #define FLASH_CMD_ERASE_CONFIRM 0xD0 #define FLASH_CMD_WRITE 0x40 #define FLASH_CMD_PROTECT 0x60 #define FLASH_CMD_PROTECT_SET 0x01 #define FLASH_CMD_PROTECT_CLEAR 0xD0 #define FLASH_CMD_CLEAR_STATUS 0x50 #define FLASH_CMD_WRITE_TO_BUFFER 0xE8 #define FLASH_CMD_WRITE_BUFFER_CONFIRM 0xD0 #define FLASH_STATUS_DONE 0x80 #define FLASH_STATUS_ESS 0x40 #define FLASH_STATUS_ECLBS 0x20 #define FLASH_STATUS_PSLBS 0x10 #define FLASH_STATUS_VPENS 0x08 #define FLASH_STATUS_PSS 0x04 #define FLASH_STATUS_DPS 0x02 #define FLASH_STATUS_R 0x01 #define FLASH_STATUS_PROTECT 0x01 #define AMD_CMD_RESET 0xF0 #define AMD_CMD_WRITE 0xA0 #define AMD_CMD_ERASE_START 0x80 #define AMD_CMD_ERASE_SECTOR 0x30 #define AMD_CMD_UNLOCK_START 0xAA #define AMD_CMD_UNLOCK_ACK 0x55 #define AMD_CMD_WRITE_TO_BUFFER 0x25 #define AMD_CMD_WRITE_BUFFER_CONFIRM 0x29 #define AMD_STATUS_TOGGLE 0x40 #define AMD_STATUS_ERROR 0x20 #define FLASH_OFFSET_MANUFACTURER_ID 0x00 #define FLASH_OFFSET_DEVICE_ID 0x01 #define FLASH_OFFSET_DEVICE_ID2 0x0E #define FLASH_OFFSET_DEVICE_ID3 0x0F #define FLASH_OFFSET_CFI 0x55 #define FLASH_OFFSET_CFI_ALT 0x555 #define FLASH_OFFSET_CFI_RESP 0x10 #define FLASH_OFFSET_PRIMARY_VENDOR 0x13 /* extended query table primary address */ #define FLASH_OFFSET_EXT_QUERY_T_P_ADDR 0x15 #define FLASH_OFFSET_WTOUT 0x1F #define FLASH_OFFSET_WBTOUT 0x20 #define FLASH_OFFSET_ETOUT 0x21 #define FLASH_OFFSET_CETOUT 0x22 #define FLASH_OFFSET_WMAX_TOUT 0x23 #define FLASH_OFFSET_WBMAX_TOUT 0x24 #define FLASH_OFFSET_EMAX_TOUT 0x25 #define FLASH_OFFSET_CEMAX_TOUT 0x26 #define FLASH_OFFSET_SIZE 0x27 #define FLASH_OFFSET_INTERFACE 0x28 #define FLASH_OFFSET_BUFFER_SIZE 0x2A #define FLASH_OFFSET_NUM_ERASE_REGIONS 0x2C #define FLASH_OFFSET_ERASE_REGIONS 0x2D #define FLASH_OFFSET_PROTECT 0x02 #define FLASH_OFFSET_USER_PROTECTION 0x85 #define FLASH_OFFSET_INTEL_PROTECTION 0x81 #define CFI_CMDSET_NONE 0 #define CFI_CMDSET_INTEL_EXTENDED 1 #define CFI_CMDSET_AMD_STANDARD 2 #define CFI_CMDSET_INTEL_STANDARD 3 #define CFI_CMDSET_AMD_EXTENDED 4 #define CFI_CMDSET_MITSU_STANDARD 256 #define CFI_CMDSET_MITSU_EXTENDED 257 #define CFI_CMDSET_SST 258 #ifdef CFG_FLASH_CFI_AMD_RESET /* needed for STM_ID_29W320DB on UC100 */ # undef FLASH_CMD_RESET # define FLASH_CMD_RESET AMD_CMD_RESET /* use AMD-Reset instead */ #endif typedef union { unsigned char c; unsigned short w; unsigned long l; unsigned long long ll; } cfiword_t; #define NUM_ERASE_REGIONS 4 /* max. number of erase regions */ static uint flash_offset_cfi[2] = { FLASH_OFFSET_CFI, FLASH_OFFSET_CFI_ALT }; /* use CFG_MAX_FLASH_BANKS_DETECT if defined */ #ifdef CFG_MAX_FLASH_BANKS_DETECT static ulong bank_base[CFG_MAX_FLASH_BANKS_DETECT] = CFG_FLASH_BANKS_LIST; flash_info_t flash_info[CFG_MAX_FLASH_BANKS_DETECT]; /* FLASH chips info */ #else static ulong bank_base[CFG_MAX_FLASH_BANKS] = CFG_FLASH_BANKS_LIST; flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* FLASH chips info */ #endif /* * Check if chip width is defined. If not, start detecting with 8bit. */ #ifndef CFG_FLASH_CFI_WIDTH #define CFG_FLASH_CFI_WIDTH FLASH_CFI_8BIT #endif typedef unsigned long flash_sect_t; /* CFI standard query structure */ struct cfi_qry { u8 qry[3]; u16 p_id; u16 p_adr; u16 a_id; u16 a_adr; u8 vcc_min; u8 vcc_max; u8 vpp_min; u8 vpp_max; u8 word_write_timeout_typ; u8 buf_write_timeout_typ; u8 block_erase_timeout_typ; u8 chip_erase_timeout_typ; u8 word_write_timeout_max; u8 buf_write_timeout_max; u8 block_erase_timeout_max; u8 chip_erase_timeout_max; u8 dev_size; u16 interface_desc; u16 max_buf_write_size; u8 num_erase_regions; u32 erase_region_info[NUM_ERASE_REGIONS]; } __attribute__((packed)); struct cfi_pri_hdr { u8 pri[3]; u8 major_version; u8 minor_version; } __attribute__((packed)); static void flash_write8(u8 value, void *addr) { __raw_writeb(value, addr); } static void flash_write16(u16 value, void *addr) { __raw_writew(value, addr); } static void flash_write32(u32 value, void *addr) { __raw_writel(value, addr); } static void flash_write64(u64 value, void *addr) { /* No architectures currently implement __raw_writeq() */ *(volatile u64 *)addr = value; } static u8 flash_read8(void *addr) { return __raw_readb(addr); } static u16 flash_read16(void *addr) { return __raw_readw(addr); } static u32 flash_read32(void *addr) { return __raw_readl(addr); } static u64 flash_read64(void *addr) { /* No architectures currently implement __raw_readq() */ return *(volatile u64 *)addr; } /*----------------------------------------------------------------------- */ #if defined(CFG_ENV_IS_IN_FLASH) || defined(CFG_ENV_ADDR_REDUND) || (CFG_MONITOR_BASE >= CFG_FLASH_BASE) static flash_info_t *flash_get_info(ulong base) { int i; flash_info_t * info = 0; for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) { info = & flash_info[i]; if (info->size && info->start[0] <= base && base <= info->start[0] + info->size - 1) break; } return i == CFG_MAX_FLASH_BANKS ? 0 : info; } #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 map_physmem(info->start[sect] + byte_offset, flash_sector_size(info, sect) - byte_offset, MAP_NOCACHE); } static inline void flash_unmap(flash_info_t *info, flash_sect_t sect, unsigned int offset, void *addr) { unsigned int byte_offset = offset * info->portwidth; unmap_physmem(addr, flash_sector_size(info, sect) - byte_offset); } /*----------------------------------------------------------------------- * make a proper sized command based on the port and chip widths */ static void flash_make_cmd (flash_info_t * info, uchar cmd, void *cmdbuf) { int i; uchar *cp = (uchar *) cmdbuf; #if defined(__LITTLE_ENDIAN) || defined(CFG_WRITE_SWAPPED_DATA) for (i = info->portwidth; i > 0; i--) #else for (i = 1; i <= info->portwidth; i++) #endif *cp++ = (i & (info->chipwidth - 1)) ? '\0' : cmd; } #ifdef DEBUG /*----------------------------------------------------------------------- * Debug support */ static void print_longlong (char *str, unsigned long long data) { int i; char *cp; cp = (unsigned 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_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 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_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, uchar 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.c, info->chipwidth << CFI_FLASH_SHIFT_WIDTH); flash_write8(cword.c, addr); break; case FLASH_CFI_16BIT: debug ("fwc addr %p cmd %x %4.4x 16bit x %d bit\n", addr, cmd, cword.w, info->chipwidth << CFI_FLASH_SHIFT_WIDTH); flash_write16(cword.w, addr); break; case FLASH_CFI_32BIT: debug ("fwc addr %p cmd %x %8.8lx 32bit x %d bit\n", addr, cmd, cword.l, info->chipwidth << CFI_FLASH_SHIFT_WIDTH); flash_write32(cword.l, addr); break; case FLASH_CFI_64BIT: #ifdef DEBUG { char str[20]; print_longlong (str, cword.ll); 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.ll, 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.c); retval = (flash_read8(addr) == cword.c); break; case FLASH_CFI_16BIT: debug ("is= %4.4x %4.4x\n", flash_read16(addr), cword.w); retval = (flash_read16(addr) == cword.w); break; case FLASH_CFI_32BIT: debug ("is= %8.8lx %8.8lx\n", flash_read32(addr), cword.l); retval = (flash_read32(addr) == cword.l); break; case FLASH_CFI_64BIT: #ifdef DEBUG { char str1[20]; char str2[20]; print_longlong (str1, flash_read64(addr)); print_longlong (str2, cword.ll); debug ("is= %s %s\n", str1, str2); } #endif retval = (flash_read64(addr) == cword.ll); 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.c) == cword.c); break; case FLASH_CFI_16BIT: retval = ((flash_read16(addr) & cword.w) == cword.w); break; case FLASH_CFI_32BIT: retval = ((flash_read16(addr) & cword.l) == cword.l); break; case FLASH_CFI_64BIT: retval = ((flash_read64(addr) & cword.ll) == cword.ll); 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) { 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.c) != (flash_read8(addr) & cword.c)); break; case FLASH_CFI_16BIT: retval = ((flash_read16(addr) & cword.w) != (flash_read16(addr) & cword.w)); break; case FLASH_CFI_32BIT: retval = ((flash_read32(addr) & cword.l) != (flash_read32(addr) & cword.l)); break; case FLASH_CFI_64BIT: retval = ((flash_read64(addr) & cword.ll) != (flash_read64(addr) & cword.ll)); 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_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 retval = flash_toggle (info, sect, 0, AMD_STATUS_TOGGLE); break; default: retval = 0; } debug ("flash_is_busy: %d\n", 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 CFG_HZ != 1000 tout *= CFG_HZ/1000; #endif /* Wait for command completion */ start = get_timer (0); 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); return ERR_TIMOUT; } 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_EXTENDED: case CFI_CMDSET_INTEL_STANDARD: if ((retcode == ERR_OK) && !flash_isequal (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); break; default: break; } return retcode; } /*----------------------------------------------------------------------- */ static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c) { #if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA) unsigned short w; unsigned int l; unsigned long long ll; #endif switch (info->portwidth) { case FLASH_CFI_8BIT: cword->c = c; break; case FLASH_CFI_16BIT: #if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA) w = c; w <<= 8; cword->w = (cword->w >> 8) | w; #else cword->w = (cword->w << 8) | c; #endif break; case FLASH_CFI_32BIT: #if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA) l = c; l <<= 24; cword->l = (cword->l >> 8) | l; #else cword->l = (cword->l << 8) | c; #endif break; case FLASH_CFI_64BIT: #if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA) ll = c; ll <<= 56; cword->ll = (cword->ll >> 8) | ll; #else cword->ll = (cword->ll << 8) | c; #endif break; } } /* loop through the sectors from the highest address when the passed * address is greater or equal to the sector address we have a match */ static flash_sect_t find_sector (flash_info_t * info, ulong addr) { flash_sect_t sector; for (sector = info->sector_count - 1; sector >= 0; sector--) { if (addr >= info->start[sector]) break; } return sector; } /*----------------------------------------------------------------------- */ static int flash_write_cfiword (flash_info_t * info, ulong dest, cfiword_t cword) { void *dstaddr; int flag; dstaddr = map_physmem(dest, info->portwidth, MAP_NOCACHE); /* Check if Flash is (sufficiently) erased */ switch (info->portwidth) { case FLASH_CFI_8BIT: flag = ((flash_read8(dstaddr) & cword.c) == cword.c); break; case FLASH_CFI_16BIT: flag = ((flash_read16(dstaddr) & cword.w) == cword.w); break; case FLASH_CFI_32BIT: flag = ((flash_read32(dstaddr) & cword.l) == cword.l); break; case FLASH_CFI_64BIT: flag = ((flash_read64(dstaddr) & cword.ll) == cword.ll); break; default: flag = 0; break; } if (!flag) { unmap_physmem(dstaddr, info->portwidth); return 2; } /* Disable interrupts which might cause a timeout here */ flag = disable_interrupts (); switch (info->vendor) { 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: #ifdef CONFIG_FLASH_CFI_LEGACY case CFI_CMDSET_AMD_LEGACY: #endif flash_unlock_seq (info, 0); flash_write_cmd (info, 0, info->addr_unlock1, AMD_CMD_WRITE); break; } switch (info->portwidth) { case FLASH_CFI_8BIT: flash_write8(cword.c, dstaddr); break; case FLASH_CFI_16BIT: flash_write16(cword.w, dstaddr); break; case FLASH_CFI_32BIT: flash_write32(cword.l, dstaddr); break; case FLASH_CFI_64BIT: flash_write64(cword.ll, dstaddr); break; } /* re-enable interrupts if necessary */ if (flag) enable_interrupts (); unmap_physmem(dstaddr, info->portwidth); return flash_full_status_check (info, find_sector (info, dest), info->write_tout, "write"); } #ifdef CFG_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; void *src = cp; void *dst = map_physmem(dest, len, MAP_NOCACHE); sector = find_sector (info, dest); switch (info->vendor) { case CFI_CMDSET_INTEL_STANDARD: case CFI_CMDSET_INTEL_EXTENDED: flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS); flash_write_cmd (info, sector, 0, FLASH_CMD_WRITE_TO_BUFFER); 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 */ switch (info->portwidth) { case FLASH_CFI_8BIT: cnt = len; break; case FLASH_CFI_16BIT: cnt = len >> 1; break; case FLASH_CFI_32BIT: cnt = len >> 2; break; case FLASH_CFI_64BIT: cnt = len >> 3; break; default: retcode = ERR_INVAL; goto out_unmap; } flash_write_cmd (info, sector, 0, (uchar) 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,0); flash_write_cmd (info, sector, 0, AMD_CMD_WRITE_TO_BUFFER); switch (info->portwidth) { case FLASH_CFI_8BIT: cnt = len; flash_write_cmd (info, sector, 0, (uchar) cnt - 1); while (cnt-- > 0) { flash_write8(flash_read8(src), dst); src += 1, dst += 1; } break; case FLASH_CFI_16BIT: cnt = len >> 1; flash_write_cmd (info, sector, 0, (uchar) cnt - 1); while (cnt-- > 0) { flash_write16(flash_read16(src), dst); src += 2, dst += 2; } break; case FLASH_CFI_32BIT: cnt = len >> 2; flash_write_cmd (info, sector, 0, (uchar) cnt - 1); while (cnt-- > 0) { flash_write32(flash_read32(src), dst); src += 4, dst += 4; } break; case FLASH_CFI_64BIT: cnt = len >> 3; flash_write_cmd (info, sector, 0, (uchar) cnt - 1); 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); 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: unmap_physmem(dst, len); return retcode; } #endif /* CFG_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; 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 { putc ('\n'); } for (sect = s_first; sect <= s_last; sect++) { if (info->protect[sect] == 0) { /* not protected */ switch (info->vendor) { 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, AMD_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 ("Unkown flash vendor %d\n", info->vendor); break; } if (flash_full_status_check (info, sect, info->erase_blk_tout, "erase")) { rcode = 1; } else putc ('.'); } } puts (" done\n"); return rcode; } /*----------------------------------------------------------------------- */ 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_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%02X", info->manufacturer_id, info->device_id); if (info->device_id == 0x7E) { printf("%04X", info->device_id2); } 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, " "buffer size: %d bytes\n", info->buffer_write_tout, info->buffer_size); } puts ("\n Sector Start Addresses:"); for (i = 0; i < info->sector_count; ++i) { if ((i % 5) == 0) printf ("\n"); #ifdef CFG_FLASH_EMPTY_INFO int k; int size; int erased; volatile unsigned long *flash; /* * Check if whole sector is erased */ size = flash_sector_size(info, i); erased = 1; flash = (volatile unsigned long *) info->start[i]; size = size >> 2; /* divide by 4 for longword access */ for (k = 0; k < size; k++) { if (*flash++ != 0xffffffff) { erased = 0; break; } } /* print empty and read-only info */ printf (" %08lX %c %s ", info->start[i], erased ? 'E' : ' ', info->protect[i] ? "RO" : " "); #else /* ! CFG_FLASH_EMPTY_INFO */ printf (" %08lX %s ", info->start[i], info->protect[i] ? "RO" : " "); #endif } putc ('\n'); return; } /*----------------------------------------------------------------------- * 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 CFG_FLASH_USE_BUFFER_WRITE int buffered_size; #endif /* get lower aligned address */ wp = (addr & ~(info->portwidth - 1)); /* handle unaligned start */ if ((aln = addr - wp) != 0) { cword.l = 0; p = map_physmem(wp, info->portwidth, MAP_NOCACHE); 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); unmap_physmem(p, info->portwidth); if (rc != 0) return rc; wp += i; } /* handle the aligned part */ #ifdef CFG_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.l = 0; for (i = 0; i < info->portwidth; i++) flash_add_byte (info, &cword, *src++); if ((rc = flash_write_cfiword (info, wp, cword)) != 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; if ((rc = flash_write_cfibuffer (info, wp, src, i)) != ERR_OK) return rc; i -= i & (info->portwidth - 1); wp += i; src += i; cnt -= i; } #else while (cnt >= info->portwidth) { cword.l = 0; for (i = 0; i < info->portwidth; i++) { flash_add_byte (info, &cword, *src++); } if ((rc = flash_write_cfiword (info, wp, cword)) != 0) return rc; wp += info->portwidth; cnt -= info->portwidth; } #endif /* CFG_FLASH_USE_BUFFER_WRITE */ if (cnt == 0) { return (0); } /* * handle unaligned tail bytes */ cword.l = 0; p = map_physmem(wp, info->portwidth, MAP_NOCACHE); 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)); unmap_physmem(p, info->portwidth); return flash_write_cfiword (info, wp, cword); } /*----------------------------------------------------------------------- */ #ifdef CFG_FLASH_PROTECTION int flash_real_protect (flash_info_t * info, long sector, int prot) { int retcode = 0; 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); if ((retcode = flash_full_status_check (info, sector, info->erase_blk_tout, prot ? "protect" : "unprotect")) == 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); 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); flash_unmap(info, 0, FLASH_OFFSET_INTEL_PROTECTION, src); } #endif /* CFG_FLASH_PROTECTION */ /*----------------------------------------------------------------------- * 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 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_STANDARD: case CFI_CMDSET_INTEL_EXTENDED: flash_write_cmd(info, 0, 0, FLASH_CMD_RESET); 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 = flash_read_uchar (info, FLASH_OFFSET_DEVICE_ID); flash_write_cmd(info, 0, 0, FLASH_CMD_RESET); break; case CFI_CMDSET_AMD_STANDARD: case CFI_CMDSET_AMD_EXTENDED: 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 */ info->manufacturer_id = flash_read_uchar (info, FLASH_OFFSET_MANUFACTURER_ID); 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); } flash_write_cmd(info, 0, 0, AMD_CMD_RESET); break; default: break; } } #ifdef CONFIG_FLASH_CFI_LEGACY /*----------------------------------------------------------------------- * 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(ulong 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 < sizeof(modes) / sizeof(modes[0]); i++) { info->vendor = modes[i]; info->start[0] = base; 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, base)) break; } } switch(info->vendor) { 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(ulong 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 int __flash_detect_cfi (flash_info_t * info, struct cfi_qry *qry) { int cfi_offset; flash_write_cmd (info, 0, 0, info->cmd_reset); for (cfi_offset=0; cfi_offset < sizeof(flash_offset_cfi) / sizeof(uint); 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); info->cfi_offset = flash_offset_cfi[cfi_offset]; debug ("device interface is %d\n", info->interface); debug ("found port %d chip %d ", info->portwidth, info->chipwidth); 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 = CFG_FLASH_CFI_WIDTH; info->portwidth <= FLASH_CFI_64BIT; info->portwidth <<= 1) { for (info->chipwidth = FLASH_CFI_BY8; info->chipwidth <= info->portwidth; info->chipwidth <<= 1) if (__flash_detect_cfi(info, qry)) return 1; } debug ("not found\n"); return 0; } /* * The following code cannot be run from FLASH! * */ ulong flash_get_size (ulong base, int banknum) { flash_info_t *info = &flash_info[banknum]; int i, j; flash_sect_t sect_cnt; unsigned long sector; unsigned long tmp; int size_ratio; uchar num_erase_regions; int erase_region_size; int erase_region_count; int geometry_reversed = 0; struct cfi_qry qry; info->ext_addr = 0; info->cfi_version = 0; #ifdef CFG_FLASH_PROTECTION info->legacy_unlock = 0; #endif info->start[0] = base; if (flash_detect_cfi (info, &qry)) { info->vendor = le16_to_cpu(qry.p_id); info->ext_addr = le16_to_cpu(qry.p_adr); num_erase_regions = qry.num_erase_regions; flash_read_jedec_ids (info); flash_write_cmd (info, 0, info->cfi_offset, FLASH_CMD_CFI); 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_STANDARD: case CFI_CMDSET_INTEL_EXTENDED: default: info->cmd_reset = FLASH_CMD_RESET; #ifdef CFG_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 break; case CFI_CMDSET_AMD_STANDARD: case CFI_CMDSET_AMD_EXTENDED: info->cmd_reset = AMD_CMD_RESET; /* check if flash geometry needs reversal */ if (num_erase_regions <= 1) break; /* 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) { geometry_reversed = 1; } break; } /* CFI >= 1.1, deduct from top/bottom flag */ /* note: ext_addr is valid since cfi_version > 0 */ if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) { geometry_reversed = 1; } 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); debug ("found %d erase regions\n", num_erase_regions); sect_cnt = 0; sector = base; for (i = 0; i < num_erase_regions; i++) { unsigned int region = i; if (i > NUM_ERASE_REGIONS) { printf ("%d erase regions found, only %d used\n", num_erase_regions, NUM_ERASE_REGIONS); break; } if (geometry_reversed) region = num_erase_regions - 1 - i; tmp = le32_to_cpu(qry.erase_region_info[region]); debug("erase region %u: 0x%08lx\n", region, 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_size = %d\n", erase_region_count, erase_region_size); for (j = 0; j < erase_region_count; j++) { if (sect_cnt >= CFG_MAX_FLASH_SECT) { printf("ERROR: too many flash sectors\n"); break; } info->start[sect_cnt] = sector; sector += (erase_region_size * size_ratio); /* * Only read protection status from * supported devices (intel...) */ switch (info->vendor) { case CFI_CMDSET_INTEL_EXTENDED: case CFI_CMDSET_INTEL_STANDARD: info->protect[sect_cnt] = flash_isset (info, sect_cnt, FLASH_OFFSET_PROTECT, FLASH_STATUS_PROTECT); break; default: /* default: not protected */ info->protect[sect_cnt] = 0; } sect_cnt++; } } info->sector_count = sect_cnt; info->size = 1 << qry.dev_size; /* multiply the size by the number of chips */ info->size *= size_ratio; 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); } /*----------------------------------------------------------------------- */ unsigned long flash_init (void) { unsigned long size = 0; int i; #ifdef CFG_FLASH_PROTECTION char *s = getenv("unlock"); #endif /* Init: no FLASHes known */ for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) { flash_info[i].flash_id = FLASH_UNKNOWN; if (!flash_detect_legacy (bank_base[i], i)) flash_get_size (bank_base[i], i); size += flash_info[i].size; if (flash_info[i].flash_id == FLASH_UNKNOWN) { #ifndef CFG_FLASH_QUIET_TEST printf ("## Unknown FLASH on Bank %d " "- Size = 0x%08lx = %ld MB\n", i+1, flash_info[i].size, flash_info[i].size << 20); #endif /* CFG_FLASH_QUIET_TEST */ } #ifdef CFG_FLASH_PROTECTION else if ((s != NULL) && (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 (CFG_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 /* CFG_FLASH_PROTECTION */ } /* Monitor protection ON by default */ #if (CFG_MONITOR_BASE >= CFG_FLASH_BASE) flash_protect (FLAG_PROTECT_SET, CFG_MONITOR_BASE, CFG_MONITOR_BASE + monitor_flash_len - 1, flash_get_info(CFG_MONITOR_BASE)); #endif /* Environment protection ON by default */ #ifdef CFG_ENV_IS_IN_FLASH flash_protect (FLAG_PROTECT_SET, CFG_ENV_ADDR, CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1, flash_get_info(CFG_ENV_ADDR)); #endif /* Redundant environment protection ON by default */ #ifdef CFG_ENV_ADDR_REDUND flash_protect (FLAG_PROTECT_SET, CFG_ENV_ADDR_REDUND, CFG_ENV_ADDR_REDUND + CFG_ENV_SIZE_REDUND - 1, flash_get_info(CFG_ENV_ADDR_REDUND)); #endif return (size); } #endif /* CFG_FLASH_CFI */