diff options
author | wdenk <wdenk> | 2004-02-23 23:54:43 +0000 |
---|---|---|
committer | wdenk <wdenk> | 2004-02-23 23:54:43 +0000 |
commit | 028ab6b598b628326116acd88e0f35aa9f526d12 (patch) | |
tree | 0d54315bd92d713a405004b6e36fca8d2b7c53e3 /drivers | |
parent | 63e73c9a8ed5b32d9c4067ffaad953e9a8fe8f0a (diff) |
* Patch by Peter Ryser, 20 Feb 2004:
Add support for the Xilinx ML300 platform
* Patch by Stephan Linz, 17 Feb 2004:
Fix watchdog support for NIOS
* Patch by Josh Fryman, 16 Feb 2004:
Fix byte-swapping for cfi_flash.c for different bus widths
* Patch by Jon Diekema, 14 Jeb 2004:
Remove duplicate "FPGA Support" notes from the README file
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/cfi_flash.c | 157 |
1 files changed, 63 insertions, 94 deletions
diff --git a/drivers/cfi_flash.c b/drivers/cfi_flash.c index 95179aeb6..d31b38f1b 100644 --- a/drivers/cfi_flash.c +++ b/drivers/cfi_flash.c @@ -46,7 +46,9 @@ #include <common.h> #include <asm/processor.h> +#include <linux/byteorder/swab.h> #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. @@ -164,31 +166,24 @@ typedef unsigned long flash_sect_t; static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c); static void flash_make_cmd (flash_info_t * info, uchar cmd, void *cmdbuf); -static void flash_write_cmd (flash_info_t * info, flash_sect_t sect, - uint offset, uchar cmd); +static void flash_write_cmd (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd); static void flash_unlock_seq (flash_info_t * info, flash_sect_t sect); -static int flash_isequal (flash_info_t * info, flash_sect_t sect, uint offset, - uchar cmd); -static int flash_isset (flash_info_t * info, flash_sect_t sect, uint offset, - uchar cmd); -static int flash_toggle (flash_info_t * info, flash_sect_t sect, uint offset, - uchar cmd); +static int flash_isequal (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd); +static int flash_isset (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd); +static int flash_toggle (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd); static int flash_detect_cfi (flash_info_t * info); static ulong flash_get_size (ulong base, int banknum); -static int flash_write_cfiword (flash_info_t * info, ulong dest, - cfiword_t cword); +static int flash_write_cfiword (flash_info_t * info, ulong dest, cfiword_t cword); static int flash_full_status_check (flash_info_t * info, flash_sect_t sector, ulong tout, char *prompt); #ifdef CFG_FLASH_USE_BUFFER_WRITE -static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp, - int len); +static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp, int len); #endif /*----------------------------------------------------------------------- * create an address based on the offset and the port width */ -inline uchar *flash_make_addr (flash_info_t * info, flash_sect_t sect, - uint offset) +inline uchar *flash_make_addr (flash_info_t * info, flash_sect_t sect, uint offset) { return ((uchar *) (info->start[sect] + (offset * info->portwidth))); } @@ -230,7 +225,6 @@ static void flash_printqry (flash_info_t * info, flash_sect_t sect) debug ("\n"); } } - #endif @@ -286,7 +280,6 @@ ushort flash_read_ushort (flash_info_t * info, flash_sect_t sect, uint offset) */ ulong flash_read_long (flash_info_t * info, flash_sect_t sect, uint offset) { - uchar *addr; ulong retval; @@ -304,8 +297,7 @@ ulong flash_read_long (flash_info_t * info, flash_sect_t sect, uint offset) #endif #if defined(__LITTLE_ENDIAN) retval = (addr[0] << 16) | (addr[(info->portwidth)] << 24) | - (addr[(2 * info->portwidth)]) | (addr[(3 * info->portwidth)] - << 8); + (addr[(2 * info->portwidth)]) | (addr[(3 * info->portwidth)] << 8); #else retval = (addr[(2 * info->portwidth) - 1] << 24) | (addr[(info->portwidth) - 1] << 16) | @@ -327,7 +319,8 @@ unsigned long flash_init (void) flash_info[i].flash_id = FLASH_UNKNOWN; size += flash_info[i].size = flash_get_size (bank_base[i], i); if (flash_info[i].flash_id == FLASH_UNKNOWN) { - printf ("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n", i, flash_info[i].size, flash_info[i].size << 20); + printf ("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n", + i, flash_info[i].size, flash_info[i].size << 20); } } @@ -377,21 +370,16 @@ int flash_erase (flash_info_t * info, int s_first, int s_last) 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); + 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, 0x555, - AMD_CMD_ERASE_START); + flash_write_cmd (info, sect, 0x555, AMD_CMD_ERASE_START); flash_unlock_seq (info, sect); - flash_write_cmd (info, sect, 0, - AMD_CMD_ERASE_SECTOR); + flash_write_cmd (info, sect, 0, AMD_CMD_ERASE_SECTOR); break; default: debug ("Unkown flash vendor %d\n", @@ -425,7 +413,11 @@ void flash_print_info (flash_info_t * info) (info->portwidth << 3), (info->chipwidth << 3)); printf (" Size: %ld MB in %d Sectors\n", info->size >> 20, info->sector_count); - printf (" Erase timeout %ld ms, write timeout %ld ms, buffer write timeout %ld ms, buffer size %d\n", info->erase_blk_tout, info->write_tout, info->buffer_write_tout, info->buffer_size); + printf (" Erase timeout %ld ms, write timeout %ld ms, buffer write timeout %ld ms, buffer size %d\n", + info->erase_blk_tout, + info->write_tout, + info->buffer_write_tout, + info->buffer_size); printf (" Sector Start Addresses:"); for (i = 0; i < info->sector_count; ++i) { @@ -605,7 +597,6 @@ int flash_real_protect (flash_info_t * info, long sector, int prot) } } } - return retcode; } @@ -706,16 +697,12 @@ static int flash_full_status_check (flash_info_t * info, flash_sect_t sector, 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)) { + if (flash_isset (info, sector, 0, FLASH_STATUS_ECLBS | FLASH_STATUS_PSLBS)) { printf ("Command Sequence Error.\n"); - } else if (flash_isset - (info, sector, 0, FLASH_STATUS_ECLBS)) { + } else if (flash_isset (info, sector, 0, FLASH_STATUS_ECLBS)) { printf ("Block Erase Error.\n"); retcode = ERR_NOT_ERASED; - } else if (flash_isset - (info, sector, 0, FLASH_STATUS_PSLBS)) { + } else if (flash_isset (info, sector, 0, FLASH_STATUS_PSLBS)) { printf ("Locking Error\n"); } if (flash_isset (info, sector, 0, FLASH_STATUS_DPS)) { @@ -762,16 +749,28 @@ static void flash_make_cmd (flash_info_t * info, uchar cmd, void *cmdbuf) int i; #if defined(__LITTLE_ENDIAN) - ushort stmp; + ushort stmpw; + uint stmpi; #endif uchar *cp = (uchar *) cmdbuf; for (i = 0; i < info->portwidth; i++) *cp++ = ((i + 1) % info->chipwidth) ? '\0' : cmd; #if defined(__LITTLE_ENDIAN) - if (info->portwidth == 2) { - stmp = *(ushort *) cmdbuf; - *(ushort *) cmdbuf = swab16 (stmp); + switch (info->portwidth) { + case FLASH_CFI_8BIT: + break; + case FLASH_CFI_16BIT: + stmpw = *(ushort *) cmdbuf; + *(ushort *) cmdbuf = __swab16 (stmpw); + break; + case FLASH_CFI_32BIT: + stmpi = *(uint *) cmdbuf; + *(uint *) cmdbuf = __swab32 (stmpi); + break; + default: + printf("WARNING: flash_make_cmd: unsuppported LittleEndian mode\n"); + break; } #endif } @@ -779,8 +778,7 @@ static void flash_make_cmd (flash_info_t * info, uchar cmd, void *cmdbuf) /* * 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) +static void flash_write_cmd (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd) { volatile cfiptr_t addr; @@ -831,8 +829,7 @@ static void flash_unlock_seq (flash_info_t * info, flash_sect_t sect) /*----------------------------------------------------------------------- */ -static int flash_isequal (flash_info_t * info, flash_sect_t sect, uint offset, - uchar cmd) +static int flash_isequal (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd) { cfiptr_t cptr; cfiword_t cword; @@ -877,8 +874,7 @@ static int flash_isequal (flash_info_t * info, flash_sect_t sect, uint offset, /*----------------------------------------------------------------------- */ -static int flash_isset (flash_info_t * info, flash_sect_t sect, uint offset, - uchar cmd) +static int flash_isset (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd) { cfiptr_t cptr; cfiword_t cword; @@ -908,8 +904,7 @@ static int flash_isset (flash_info_t * info, flash_sect_t sect, uint offset, /*----------------------------------------------------------------------- */ -static int flash_toggle (flash_info_t * info, flash_sect_t sect, uint offset, - uchar cmd) +static int flash_toggle (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd) { cfiptr_t cptr; cfiword_t cword; @@ -953,27 +948,18 @@ static int flash_detect_cfi (flash_info_t * info) info->chipwidth <= info->portwidth; info->chipwidth <<= 1) { flash_write_cmd (info, 0, 0, FLASH_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); + 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); + info->portwidth << CFI_FLASH_SHIFT_WIDTH, + info->chipwidth << CFI_FLASH_SHIFT_WIDTH); return 1; } } @@ -1001,9 +987,7 @@ static ulong flash_get_size (ulong base, int banknum) info->start[0] = base; if (flash_detect_cfi (info)) { - info->vendor = - flash_read_ushort (info, 0, - FLASH_OFFSET_PRIMARY_VENDOR); + info->vendor = flash_read_ushort (info, 0, FLASH_OFFSET_PRIMARY_VENDOR); #ifdef DEBUG flash_printqry (info, 0); #endif @@ -1026,9 +1010,7 @@ static ulong flash_get_size (ulong base, int banknum) && (info->chipwidth == FLASH_CFI_BY8)) { size_ratio >>= 1; } - num_erase_regions = - flash_read_uchar (info, - FLASH_OFFSET_NUM_ERASE_REGIONS); + num_erase_regions = flash_read_uchar (info, FLASH_OFFSET_NUM_ERASE_REGIONS); 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); @@ -1037,7 +1019,8 @@ static ulong flash_get_size (ulong base, int banknum) 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); + printf ("%d erase regions found, only %d used\n", + num_erase_regions, NUM_ERASE_REGIONS); break; } tmp = flash_read_long (info, 0, @@ -1047,7 +1030,8 @@ static ulong flash_get_size (ulong base, int banknum) (tmp & 0xffff) ? ((tmp & 0xffff) * 256) : 128; tmp >>= 16; erase_region_count = (tmp & 0xffff) + 1; - printf ("erase_region_count = %d erase_region_size = %d\n", erase_region_count, erase_region_size); + printf ("erase_region_count = %d erase_region_size = %d\n", + erase_region_count, erase_region_size); for (j = 0; j < erase_region_count; j++) { info->start[sect_cnt] = sector; sector += (erase_region_size * size_ratio); @@ -1061,29 +1045,14 @@ static ulong flash_get_size (ulong base, int banknum) info->sector_count = sect_cnt; /* multiply the size by the number of chips */ - info->size = - (1 << flash_read_uchar (info, FLASH_OFFSET_SIZE)) * - size_ratio; - info->buffer_size = - (1 << - flash_read_ushort (info, 0, - FLASH_OFFSET_BUFFER_SIZE)); + info->size = (1 << flash_read_uchar (info, FLASH_OFFSET_SIZE)) * size_ratio; + info->buffer_size = (1 << flash_read_ushort (info, 0, FLASH_OFFSET_BUFFER_SIZE)); tmp = 1 << flash_read_uchar (info, FLASH_OFFSET_ETOUT); - info->erase_blk_tout = - (tmp * - (1 << - flash_read_uchar (info, FLASH_OFFSET_EMAX_TOUT))); + info->erase_blk_tout = (tmp * (1 << flash_read_uchar (info, FLASH_OFFSET_EMAX_TOUT))); tmp = 1 << flash_read_uchar (info, FLASH_OFFSET_WBTOUT); - info->buffer_write_tout = - (tmp * - (1 << - flash_read_uchar (info, FLASH_OFFSET_WBMAX_TOUT))); + info->buffer_write_tout = (tmp * (1 << flash_read_uchar (info, FLASH_OFFSET_WBMAX_TOUT))); tmp = 1 << flash_read_uchar (info, FLASH_OFFSET_WTOUT); - info->write_tout = - (tmp * - (1 << - flash_read_uchar (info, - FLASH_OFFSET_WMAX_TOUT))) / 1000; + info->write_tout = (tmp * (1 << flash_read_uchar (info, FLASH_OFFSET_WMAX_TOUT))) / 1000; info->flash_id = FLASH_MAN_CFI; } |