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path: root/drivers/mtd/cfi_flash.c
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Diffstat (limited to 'drivers/mtd/cfi_flash.c')
-rw-r--r--drivers/mtd/cfi_flash.c55
1 files changed, 40 insertions, 15 deletions
diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c
index 68ab55f..c0ea97b 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;
@@ -570,20 +581,16 @@ static int flash_toggle (flash_info_t * info, flash_sect_t sect,
flash_make_cmd (info, cmd, &cword);
switch (info->portwidth) {
case FLASH_CFI_8BIT:
- retval = ((flash_read8(addr) & cword.c) !=
- (flash_read8(addr) & cword.c));
+ retval = flash_read8(addr) != flash_read8(addr);
break;
case FLASH_CFI_16BIT:
- retval = ((flash_read16(addr) & cword.w) !=
- (flash_read16(addr) & cword.w));
+ retval = flash_read16(addr) != flash_read16(addr);
break;
case FLASH_CFI_32BIT:
- retval = ((flash_read32(addr) & cword.l) !=
- (flash_read32(addr) & cword.l));
+ retval = flash_read32(addr) != flash_read32(addr);
break;
case FLASH_CFI_64BIT:
- retval = ((flash_read64(addr) & cword.ll) !=
- (flash_read64(addr) & cword.ll));
+ retval = flash_read64(addr) != flash_read64(addr);
break;
default:
retval = 0;
@@ -605,6 +612,7 @@ 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 +672,7 @@ 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 +801,7 @@ 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 +856,7 @@ 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 +911,14 @@ 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 +926,7 @@ 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 +1053,7 @@ 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 +1122,9 @@ 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 +1515,7 @@ 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 +1570,7 @@ 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;
@@ -1720,6 +1741,8 @@ ulong flash_get_size (ulong base, int banknum)
int erase_region_count;
struct cfi_qry qry;
+ memset(&qry, 0, sizeof(qry));
+
info->ext_addr = 0;
info->cfi_version = 0;
#ifdef CFG_FLASH_PROTECTION
@@ -1745,6 +1768,7 @@ 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);
@@ -1822,6 +1846,7 @@ 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 2024-11-22 06:32:58 +0000