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path: root/drivers/cfi_flash.c
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Diffstat (limited to 'drivers/cfi_flash.c')
-rw-r--r--drivers/cfi_flash.c157
1 files changed, 63 insertions, 94 deletions
diff --git a/drivers/cfi_flash.c b/drivers/cfi_flash.c
index 95179ae..d31b38f 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;
}
generated by cgit v1.1 at 2024-11-28 00:49:20 +0000