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-rw-r--r--board/jse/flash.c184
1 files changed, 33 insertions, 151 deletions
diff --git a/board/jse/flash.c b/board/jse/flash.c
index 763e8e0..c462fe0 100644
--- a/board/jse/flash.c
+++ b/board/jse/flash.c
@@ -35,7 +35,7 @@
#if CFG_MAX_FLASH_BANKS != 1
#error "CFG_MAX_FLASH_BANKS must be 1"
#endif
-flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
/*-----------------------------------------------------------------------
* Functions
@@ -44,8 +44,8 @@ static ulong flash_get_size (vu_long * addr, flash_info_t * info);
static int write_word (flash_info_t * info, ulong dest, ulong data);
static void flash_get_offsets (ulong base, flash_info_t * info);
-#define ADDR0 0x5555
-#define ADDR1 0x2aaa
+#define ADDR0 0x5555
+#define ADDR1 0x2aaa
#define FLASH_WORD_SIZE unsigned char
/*-----------------------------------------------------------------------
@@ -84,36 +84,17 @@ unsigned long flash_init (void)
/*-----------------------------------------------------------------------
*/
+/*
+ * This implementation assumes that the flash chips are uniform sector
+ * devices. This is true for all likely JSE devices.
+ */
static void flash_get_offsets (ulong base, flash_info_t * info)
{
- int i;
+ unsigned idx;
+ unsigned long sector_size = info->size / info->sector_count;
- /* set up sector start address table */
- if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
- (info->flash_id == FLASH_AM040)) {
- for (i = 0; i < info->sector_count; i++)
- info->start[i] = base + (i * 0x00010000);
- } else {
- if (info->flash_id & FLASH_BTYPE) {
- /* set sector offsets for bottom boot block type */
- info->start[0] = base + 0x00000000;
- info->start[1] = base + 0x00004000;
- info->start[2] = base + 0x00006000;
- info->start[3] = base + 0x00008000;
- for (i = 4; i < info->sector_count; i++) {
- info->start[i] =
- base + (i * 0x00010000) - 0x00030000;
- }
- } else {
- /* set sector offsets for top boot block type */
- i = info->sector_count - 1;
- info->start[i--] = base + info->size - 0x00004000;
- info->start[i--] = base + info->size - 0x00006000;
- info->start[i--] = base + info->size - 0x00008000;
- for (; i >= 0; i--) {
- info->start[i] = base + i * 0x00010000;
- }
- }
+ for (idx = 0; idx < info->sector_count; idx += 1) {
+ info->start[idx] = base + (idx * sector_size);
}
}
@@ -142,44 +123,21 @@ void flash_print_info (flash_info_t * info)
case FLASH_MAN_SST:
printf ("SST ");
break;
+ case FLASH_MAN_STM:
+ printf ("ST Micro ");
+ break;
default:
printf ("Unknown Vendor ");
break;
}
- switch (info->flash_id & FLASH_TYPEMASK) {
- case FLASH_AM040:
+ /* (Reduced table of only parts expected in JSE boards.) */
+ switch (info->flash_id) {
+ case FLASH_MAN_AMD | FLASH_AM040:
printf ("AM29F040 (512 Kbit, uniform sector size)\n");
break;
- case FLASH_AM400B:
- printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
- break;
- case FLASH_AM400T:
- printf ("AM29LV400T (4 Mbit, top boot sector)\n");
- break;
- case FLASH_AM800B:
- printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
- break;
- case FLASH_AM800T:
- printf ("AM29LV800T (8 Mbit, top boot sector)\n");
- break;
- case FLASH_AM160B:
- printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
- break;
- case FLASH_AM160T:
- printf ("AM29LV160T (16 Mbit, top boot sector)\n");
- break;
- case FLASH_AM320B:
- printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
- break;
- case FLASH_AM320T:
- printf ("AM29LV320T (32 Mbit, top boot sector)\n");
- break;
- case FLASH_SST800A:
- printf ("SST39LF/VF800 (8 Mbit, uniform sector size)\n");
- break;
- case FLASH_SST160A:
- printf ("SST39LF/VF160 (16 Mbit, uniform sector size)\n");
+ case FLASH_MAN_STM | FLASH_AM040:
+ printf ("MM29W040W (512 Kbit, uniform sector size)\n");
break;
default:
printf ("Unknown Chip Type\n");
@@ -253,14 +211,18 @@ static ulong flash_get_size (vu_long * addr, flash_info_t * info)
case (FLASH_WORD_SIZE) SST_MANUFACT:
info->flash_id = FLASH_MAN_SST;
break;
+ case (FLASH_WORD_SIZE)STM_MANUFACT:
+ info->flash_id = FLASH_MAN_STM;
+ break;
default:
info->flash_id = FLASH_UNKNOWN;
info->sector_count = 0;
info->size = 0;
+ printf("Unknown flash manufacturer code: 0x%x\n", value);
return (0); /* no or unknown flash */
}
- value = addr2[1]; /* device ID */
+ value = addr2[1]; /* device ID */
switch (value) {
case (FLASH_WORD_SIZE) AMD_ID_F040B:
@@ -273,99 +235,19 @@ static ulong flash_get_size (vu_long * addr, flash_info_t * info)
info->sector_count = 8;
info->size = 0x0080000; /* => 512 ko */
break;
- case (FLASH_WORD_SIZE) AMD_ID_LV400T:
- info->flash_id += FLASH_AM400T;
- info->sector_count = 11;
- info->size = 0x00080000;
- break; /* => 0.5 MB */
-
- case (FLASH_WORD_SIZE) AMD_ID_LV400B:
- info->flash_id += FLASH_AM400B;
- info->sector_count = 11;
- info->size = 0x00080000;
- break; /* => 0.5 MB */
-
- case (FLASH_WORD_SIZE) AMD_ID_LV800T:
- info->flash_id += FLASH_AM800T;
- info->sector_count = 19;
- info->size = 0x00100000;
- break; /* => 1 MB */
-
- case (FLASH_WORD_SIZE) AMD_ID_LV800B:
- info->flash_id += FLASH_AM800B;
- info->sector_count = 19;
- info->size = 0x00100000;
- break; /* => 1 MB */
-
- case (FLASH_WORD_SIZE) AMD_ID_LV160T:
- info->flash_id += FLASH_AM160T;
- info->sector_count = 35;
- info->size = 0x00200000;
- break; /* => 2 MB */
-
- case (FLASH_WORD_SIZE) AMD_ID_LV160B:
- info->flash_id += FLASH_AM160B;
- info->sector_count = 35;
- info->size = 0x00200000;
- break; /* => 2 MB */
-#if 0 /* enable when device IDs are available */
- case (FLASH_WORD_SIZE) AMD_ID_LV320T:
- info->flash_id += FLASH_AM320T;
- info->sector_count = 67;
- info->size = 0x00400000;
- break; /* => 4 MB */
-
- case (FLASH_WORD_SIZE) AMD_ID_LV320B:
- info->flash_id += FLASH_AM320B;
- info->sector_count = 67;
- info->size = 0x00400000;
- break; /* => 4 MB */
-#endif
- case (FLASH_WORD_SIZE) SST_ID_xF800A:
- info->flash_id += FLASH_SST800A;
- info->sector_count = 16;
- info->size = 0x00100000;
- break; /* => 1 MB */
-
- case (FLASH_WORD_SIZE) SST_ID_xF160A:
- info->flash_id += FLASH_SST160A;
- info->sector_count = 32;
- info->size = 0x00200000;
- break; /* => 2 MB */
-
+ case (FLASH_WORD_SIZE)STM_ID_M29W040B: /* most likele JSE chip */
+ info->flash_id += FLASH_AM040;
+ info->sector_count = 8;
+ info->size = 0x0080000; /* => 512 ko */
+ break;
default:
info->flash_id = FLASH_UNKNOWN;
return (0); /* => no or unknown flash */
}
- /* set up sector start address table */
- if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
- (info->flash_id == FLASH_AM040)) {
- for (i = 0; i < info->sector_count; i++)
- info->start[i] = base + (i * 0x00010000);
- } else {
- if (info->flash_id & FLASH_BTYPE) {
- /* set sector offsets for bottom boot block type */
- info->start[0] = base + 0x00000000;
- info->start[1] = base + 0x00004000;
- info->start[2] = base + 0x00006000;
- info->start[3] = base + 0x00008000;
- for (i = 4; i < info->sector_count; i++) {
- info->start[i] =
- base + (i * 0x00010000) - 0x00030000;
- }
- } else {
- /* set sector offsets for top boot block type */
- i = info->sector_count - 1;
- info->start[i--] = base + info->size - 0x00004000;
- info->start[i--] = base + info->size - 0x00006000;
- info->start[i--] = base + info->size - 0x00008000;
- for (; i >= 0; i--) {
- info->start[i] = base + i * 0x00010000;
- }
- }
- }
+ /* Calculate the sector offsets (Use JSE Optimized code). */
+ flash_get_offsets(base, info);
/* check for protected sectors */
for (i = 0; i < info->sector_count; i++) {
@@ -505,7 +387,7 @@ int flash_erase (flash_info_t * info, int s_first, int s_last)
goto DONE;
wait_for_DQ7 (info, l_sect);
- DONE:
+DONE:
#endif
/* reset to read mode */
addr = (FLASH_WORD_SIZE *) info->start[0];
@@ -603,7 +485,7 @@ static int write_word (flash_info_t * info, ulong dest, ulong data)
/* Check if Flash is (sufficiently) erased */
if ((*((volatile FLASH_WORD_SIZE *) dest) &
- (FLASH_WORD_SIZE) data) != (FLASH_WORD_SIZE) data) {
+ (FLASH_WORD_SIZE) data) != (FLASH_WORD_SIZE) data) {
return (2);
}
generated by cgit v1.1 at 2024-11-16 00:24:01 +0000