From 93c56f212ccdadc182018f0769cb284426b88f1d Mon Sep 17 00:00:00 2001 From: Vasiliy Leoenenko Date: Wed, 7 May 2008 21:24:44 +0400 Subject: cfi_flash: support of long cmd in U-boot. Some NOR flash chips needs support of commands with length grether than max value size of uchar. For example all M18 family chips use 0x1ff command in buffered write mode as value of program loops count. Signed-off-by: Alexey Korolev Signed-off-by: Vasiliy Leonenko --- drivers/mtd/cfi_flash.c | 22 +++++++++++++++------- 1 file changed, 15 insertions(+), 7 deletions(-) (limited to 'drivers/mtd') diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c index 68ab55f..90cb966 100644 --- a/drivers/mtd/cfi_flash.c +++ b/drivers/mtd/cfi_flash.c @@ -298,17 +298,25 @@ static inline void flash_unmap(flash_info_t *info, flash_sect_t sect, /*----------------------------------------------------------------------- * 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) +static void flash_make_cmd (flash_info_t * info, ulong cmd, void *cmdbuf) { int i; + int cword_offset; + int cp_offset; + 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_WRITE_SWAPPED_DATA) - for (i = info->portwidth; i > 0; i--) + cp_offset = info->portwidth - i; + val = *((uchar*)&cmd + cword_offset); #else - for (i = 1; i <= info->portwidth; i++) + cp_offset = i - 1; + val = *((uchar*)&cmd + sizeof(ulong) - cword_offset - 1); #endif - *cp++ = (i & (info->chipwidth - 1)) ? '\0' : cmd; + cp[cp_offset] = (cword_offset >= sizeof(ulong)) ? 0x00 : val; + } } #ifdef DEBUG @@ -422,7 +430,7 @@ static ulong flash_read_long (flash_info_t * info, flash_sect_t sect, * 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) + uint offset, ulong cmd) { void *addr; @@ -911,7 +919,7 @@ static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp, /* reduce the number of loops by the width of * the port */ cnt = len >> shift; - flash_write_cmd (info, sector, 0, (uchar) cnt - 1); + flash_write_cmd (info, sector, 0, cnt - 1); while (cnt-- > 0) { switch (info->portwidth) { case FLASH_CFI_8BIT: @@ -953,7 +961,7 @@ static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp, #endif flash_write_cmd(info, sector, offset, AMD_CMD_WRITE_TO_BUFFER); cnt = len >> shift; - flash_write_cmd(info, sector, offset, (uchar)cnt - 1); + flash_write_cmd(info, sector, offset, cnt - 1); switch (info->portwidth) { case FLASH_CFI_8BIT: -- cgit v1.1 From 9c048b523413ae5f3ff34e00cf57569c3368ab51 Mon Sep 17 00:00:00 2001 From: Vasiliy Leoenenko Date: Wed, 7 May 2008 21:25:33 +0400 Subject: cfi_flash: enable M18 flash chips family support. Added new command set ID. Buffered write command processing is changed in order to support M18 flash chips family. Signed-off-by: Alexey Korolev Signed-off-by: Vasiliy Leonenko --- drivers/mtd/cfi_flash.c | 23 +++++++++++++++++++++-- 1 file changed, 21 insertions(+), 2 deletions(-) (limited to 'drivers/mtd') diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c index 90cb966..a2d88ea 100644 --- a/drivers/mtd/cfi_flash.c +++ b/drivers/mtd/cfi_flash.c @@ -76,7 +76,9 @@ #define FLASH_CMD_PROTECT_SET 0x01 #define FLASH_CMD_PROTECT_CLEAR 0xD0 #define FLASH_CMD_CLEAR_STATUS 0x50 +#define FLASH_CMD_READ_STATUS 0x70 #define FLASH_CMD_WRITE_TO_BUFFER 0xE8 +#define FLASH_CMD_WRITE_BUFFER_PROG 0xE9 #define FLASH_CMD_WRITE_BUFFER_CONFIRM 0xD0 #define FLASH_STATUS_DONE 0x80 @@ -136,6 +138,7 @@ #define CFI_CMDSET_MITSU_STANDARD 256 #define CFI_CMDSET_MITSU_EXTENDED 257 #define CFI_CMDSET_SST 258 +#define CFI_CMDSET_INTEL_PROG_REGIONS 512 #ifdef CFG_FLASH_CFI_AMD_RESET /* needed for STM_ID_29W320DB on UC100 */ # undef FLASH_CMD_RESET @@ -613,6 +616,7 @@ 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); @@ -672,6 +676,7 @@ static int flash_full_status_check (flash_info_t * info, flash_sect_t sector, 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) @@ -800,6 +805,7 @@ static int flash_write_cfiword (flash_info_t * info, ulong dest, 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); @@ -854,6 +860,7 @@ static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp, int flag = 0; uint offset = 0; unsigned int shift; + uchar write_cmd; switch (info->portwidth) { case FLASH_CFI_8BIT: @@ -908,10 +915,14 @@ static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * 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_WRITE_TO_BUFFER); + 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"); @@ -961,7 +972,7 @@ static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp, #endif flash_write_cmd(info, sector, offset, AMD_CMD_WRITE_TO_BUFFER); cnt = len >> shift; - flash_write_cmd(info, sector, offset, cnt - 1); + flash_write_cmd(info, sector, offset, (uchar)cnt - 1); switch (info->portwidth) { case FLASH_CFI_8BIT: @@ -1046,6 +1057,7 @@ int flash_erase (flash_info_t * info, int s_first, int s_last) for (sect = s_first; sect <= s_last; sect++) { if (info->protect[sect] == 0) { /* not protected */ 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, @@ -1114,6 +1126,9 @@ void flash_print_info (flash_info_t * info) 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; @@ -1504,6 +1519,7 @@ static void flash_read_jedec_ids (flash_info_t * info) 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); @@ -1558,6 +1574,7 @@ static int flash_detect_legacy(ulong base, int banknum) } 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; @@ -1753,6 +1770,7 @@ ulong flash_get_size (ulong base, int banknum) #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); @@ -1830,6 +1848,7 @@ ulong flash_get_size (ulong base, int banknum) * supported devices (intel...) */ switch (info->vendor) { + case CFI_CMDSET_INTEL_PROG_REGIONS: case CFI_CMDSET_INTEL_EXTENDED: case CFI_CMDSET_INTEL_STANDARD: info->protect[sect_cnt] = -- cgit v1.1