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-rw-r--r--drivers/mtd/cfi_flash.c41
1 files changed, 34 insertions, 7 deletions
diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c
index d84f0fc..d505bc8 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
@@ -298,17 +301,25 @@ 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 +433,7 @@ 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;
@@ -605,6 +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);
@@ -664,6 +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)
@@ -792,6 +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);
@@ -846,6 +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:
@@ -900,10 +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");
@@ -911,7 +930,7 @@ 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:
@@ -1038,6 +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,
@@ -1106,6 +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;
@@ -1496,6 +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);
@@ -1550,6 +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;
@@ -1747,6 +1772,7 @@ 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);
@@ -1824,6 +1850,7 @@ 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] =
generated by cgit v1.1 at 2024-12-16 00:39:45 +0000