X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=drivers%2Fcfi_flash.c;h=5579a1efc155e3cb9d488af81d5262b2d2b19c95;hb=b721ff745d3e5b4fe6bb8db430553d54dba4bd17;hp=8f959e72a2741faa50761a5bffa32b60f5a7fe3e;hpb=6bd87c0aeea441c49d59fd542b84a9be88d08b17;p=u-boot diff --git a/drivers/cfi_flash.c b/drivers/cfi_flash.c index 8f959e72a2..5579a1efc1 100644 --- a/drivers/cfi_flash.c +++ b/drivers/cfi_flash.c @@ -2,7 +2,7 @@ * (C) Copyright 2002-2004 * Brad Kemp, Seranoa Networks, Brad.Kemp@seranoa.com * - * Copyright (C) 2003, 2006 Arabella Software Ltd. + * Copyright (C) 2003 Arabella Software Ltd. * Yuli Barcohen * * Copyright (C) 2004 @@ -35,13 +35,11 @@ /* #define DEBUG */ #include - -#ifdef CFG_FLASH_CFI_DRIVER - -#include #include +#include #include #include +#ifdef CFG_FLASH_CFI_DRIVER /* * This file implements a Common Flash Interface (CFI) driver for U-Boot. @@ -57,12 +55,10 @@ * 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). */ -#if defined(__LITTLE_ENDIAN) && !defined(CFG_FLASH_CFI_SWAP) -#define CFG_FLASH_CFI_SWAP -#endif - #ifndef CFG_FLASH_BANKS_LIST #define CFG_FLASH_BANKS_LIST { CFG_FLASH_BASE } #endif @@ -111,6 +107,7 @@ #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 #define FLASH_OFFSET_EXT_QUERY_T_P_ADDR 0x15 /* extended query table primary addr */ @@ -161,6 +158,8 @@ typedef union { #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; @@ -260,7 +259,7 @@ inline uchar flash_read_uchar (flash_info_t * info, uint offset) uchar *cp; cp = flash_make_addr (info, 0, offset); -#if defined(CFG_FLASH_CFI_SWAP) +#if defined(__LITTLE_ENDIAN) || defined(CFG_WRITE_SWAPPED_DATA) return (cp[0]); #else return (cp[info->portwidth - 1]); @@ -287,7 +286,7 @@ ushort flash_read_ushort (flash_info_t * info, flash_sect_t sect, uint offset) debug ("addr[%x] = 0x%x\n", x, addr[x]); } #endif -#if defined(CFG_FLASH_CFI_SWAP) +#if defined(__LITTLE_ENDIAN) || defined(CFG_WRITE_SWAPPED_DATA) retval = ((addr[(info->portwidth)] << 8) | addr[0]); #else retval = ((addr[(2 * info->portwidth) - 1] << 8) | @@ -319,7 +318,7 @@ ulong flash_read_long (flash_info_t * info, flash_sect_t sect, uint offset) debug ("addr[%x] = 0x%x\n", x, addr[x]); } #endif -#if defined(CFG_FLASH_CFI_SWAP) +#if defined(__LITTLE_ENDIAN) || defined(CFG_WRITE_SWAPPED_DATA) retval = (addr[0] << 16) | (addr[(info->portwidth)] << 24) | (addr[(2 * info->portwidth)]) | (addr[(3 * info->portwidth)] << 8); #else @@ -350,7 +349,7 @@ unsigned long flash_init (void) 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, flash_info[i].size, flash_info[i].size << 20); + i+1, flash_info[i].size, flash_info[i].size << 20); #endif /* CFG_FLASH_QUIET_TEST */ } #ifdef CFG_FLASH_PROTECTION @@ -860,7 +859,7 @@ static int flash_full_status_check (flash_info_t * info, flash_sect_t sector, */ static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c) { -#if defined(__LITTLE_ENDIAN) +#if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA) unsigned short w; unsigned int l; unsigned long long ll; @@ -871,7 +870,7 @@ static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c) cword->c = c; break; case FLASH_CFI_16BIT: -#if defined(__LITTLE_ENDIAN) +#if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA) w = c; w <<= 8; cword->w = (cword->w >> 8) | w; @@ -880,7 +879,7 @@ static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c) #endif break; case FLASH_CFI_32BIT: -#if defined(__LITTLE_ENDIAN) +#if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA) l = c; l <<= 24; cword->l = (cword->l >> 8) | l; @@ -889,7 +888,7 @@ static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c) #endif break; case FLASH_CFI_64BIT: -#if defined(__LITTLE_ENDIAN) +#if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA) ll = c; ll <<= 56; cword->ll = (cword->ll >> 8) | ll; @@ -909,22 +908,12 @@ static void flash_make_cmd (flash_info_t * info, uchar cmd, void *cmdbuf) int i; uchar *cp = (uchar *) cmdbuf; -#if defined(CFG_FLASH_CFI_SWAP) +#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 CFG_FLASH_CFI_2x16 - if ((info->portwidth == FLASH_CFI_32BIT) && (info->chipwidth == FLASH_CFI_BY16)) - { - uchar tmp; - cp = (uchar *) cmdbuf; - tmp = cp[1]; - cp[1] = cp[2]; - cp[2] = tmp; - } -#endif /* CFG_FLASH_CFI_2x16 */ } /* @@ -943,27 +932,18 @@ static void flash_write_cmd (flash_info_t * info, flash_sect_t sect, uint offset debug ("fwc addr %p cmd %x %x 8bit x %d bit\n", addr.cp, cmd, cword.c, info->chipwidth << CFI_FLASH_SHIFT_WIDTH); *addr.cp = cword.c; -#ifdef CONFIG_BLACKFIN - asm("ssync;"); -#endif break; case FLASH_CFI_16BIT: debug ("fwc addr %p cmd %x %4.4x 16bit x %d bit\n", addr.wp, cmd, cword.w, info->chipwidth << CFI_FLASH_SHIFT_WIDTH); *addr.wp = cword.w; -#ifdef CONFIG_BLACKFIN - asm("ssync;"); -#endif break; case FLASH_CFI_32BIT: debug ("fwc addr %p cmd %x %8.8lx 32bit x %d bit\n", addr.lp, cmd, cword.l, info->chipwidth << CFI_FLASH_SHIFT_WIDTH); *addr.lp = cword.l; -#ifdef CONFIG_BLACKFIN - asm("ssync;"); -#endif break; case FLASH_CFI_64BIT: #ifdef DEBUG @@ -978,11 +958,11 @@ static void flash_write_cmd (flash_info_t * info, flash_sect_t sect, uint offset } #endif *addr.llp = cword.ll; -#ifdef CONFIG_BLACKFIN - asm("ssync;"); -#endif break; } + + /* Ensure all the instructions are fully finished */ + sync(); } static void flash_unlock_seq (flash_info_t * info, flash_sect_t sect) @@ -1153,6 +1133,7 @@ static void flash_read_jedec_ids (flash_info_t * info) */ static int flash_detect_cfi (flash_info_t * info) { + int cfi_offset; debug ("flash detect cfi\n"); for (info->portwidth = CFG_FLASH_CFI_WIDTH; @@ -1161,19 +1142,22 @@ static int flash_detect_cfi (flash_info_t * info) info->chipwidth <= info->portwidth; info->chipwidth <<= 1) { flash_write_cmd (info, 0, 0, info->cmd_reset); - flash_write_cmd (info, 0, FLASH_OFFSET_CFI, 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')) { - info->interface = flash_read_ushort (info, 0, FLASH_OFFSET_INTERFACE); - 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); - return 1; + 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')) { + info->interface = flash_read_ushort (info, 0, FLASH_OFFSET_INTERFACE); + 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); + return 1; + } } } } @@ -1210,7 +1194,7 @@ ulong flash_get_size (ulong base, int banknum) info->vendor = flash_read_ushort (info, 0, FLASH_OFFSET_PRIMARY_VENDOR); flash_read_jedec_ids (info); - flash_write_cmd (info, 0, FLASH_OFFSET_CFI, FLASH_CMD_CFI); + flash_write_cmd (info, 0, info->cfi_offset, FLASH_CMD_CFI); num_erase_regions = flash_read_uchar (info, FLASH_OFFSET_NUM_ERASE_REGIONS); info->ext_addr = flash_read_ushort (info, 0, @@ -1369,7 +1353,6 @@ static int flash_write_cfiword (flash_info_t * info, ulong dest, ctladdr.cp = flash_make_addr (info, 0, 0); cptr.cp = (uchar *) dest; - /* Check if Flash is (sufficiently) erased */ switch (info->portwidth) { case FLASH_CFI_8BIT: @@ -1541,4 +1524,5 @@ static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp, } } #endif /* CFG_FLASH_USE_BUFFER_WRITE */ + #endif /* CFG_FLASH_CFI */