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https://github.com/AsahiLinux/u-boot
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Patch by Stephen Williams, 11 May 2004:
Add flash support for ST M29W040B Reduce JSE specific flash.c to remove dead code.
This commit is contained in:
wdenk
parent
356a0d9f31
commit
6bdd1377af
2 changed files with 37 additions and 151 deletions
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@ -2,6 +2,10 @@
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Changes since U-Boot 1.1.1:
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======================================================================
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* Patch by Stephen Williams, 11 May 2004:
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Add flash support for ST M29W040B
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Reduce JSE specific flash.c to remove dead code.
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* Patch by Markus Pietrek, 04 May 2004:
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Fix clear_bss code for ARM systems (all except s3c44b0 which
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doesn't clear BSS at all?)
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@ -35,7 +35,7 @@
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#if CFG_MAX_FLASH_BANKS != 1
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#error "CFG_MAX_FLASH_BANKS must be 1"
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#endif
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flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
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flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
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/*-----------------------------------------------------------------------
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* Functions
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@ -44,8 +44,8 @@ static ulong flash_get_size (vu_long * addr, flash_info_t * info);
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static int write_word (flash_info_t * info, ulong dest, ulong data);
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static void flash_get_offsets (ulong base, flash_info_t * info);
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#define ADDR0 0x5555
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#define ADDR1 0x2aaa
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#define ADDR0 0x5555
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#define ADDR1 0x2aaa
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#define FLASH_WORD_SIZE unsigned char
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/*-----------------------------------------------------------------------
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@ -84,36 +84,17 @@ unsigned long flash_init (void)
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/*-----------------------------------------------------------------------
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*/
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/*
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* This implementation assumes that the flash chips are uniform sector
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* devices. This is true for all likely JSE devices.
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*/
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static void flash_get_offsets (ulong base, flash_info_t * info)
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{
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int i;
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unsigned idx;
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unsigned long sector_size = info->size / info->sector_count;
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/* set up sector start address table */
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if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
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(info->flash_id == FLASH_AM040)) {
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for (i = 0; i < info->sector_count; i++)
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info->start[i] = base + (i * 0x00010000);
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} else {
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if (info->flash_id & FLASH_BTYPE) {
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/* set sector offsets for bottom boot block type */
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info->start[0] = base + 0x00000000;
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info->start[1] = base + 0x00004000;
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info->start[2] = base + 0x00006000;
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info->start[3] = base + 0x00008000;
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for (i = 4; i < info->sector_count; i++) {
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info->start[i] =
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base + (i * 0x00010000) - 0x00030000;
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}
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} else {
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/* set sector offsets for top boot block type */
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i = info->sector_count - 1;
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info->start[i--] = base + info->size - 0x00004000;
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info->start[i--] = base + info->size - 0x00006000;
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info->start[i--] = base + info->size - 0x00008000;
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for (; i >= 0; i--) {
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info->start[i] = base + i * 0x00010000;
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}
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}
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for (idx = 0; idx < info->sector_count; idx += 1) {
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info->start[idx] = base + (idx * sector_size);
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}
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}
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@ -142,44 +123,21 @@ void flash_print_info (flash_info_t * info)
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case FLASH_MAN_SST:
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printf ("SST ");
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break;
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case FLASH_MAN_STM:
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printf ("ST Micro ");
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break;
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default:
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printf ("Unknown Vendor ");
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break;
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}
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switch (info->flash_id & FLASH_TYPEMASK) {
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case FLASH_AM040:
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/* (Reduced table of only parts expected in JSE boards.) */
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switch (info->flash_id) {
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case FLASH_MAN_AMD | FLASH_AM040:
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printf ("AM29F040 (512 Kbit, uniform sector size)\n");
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break;
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case FLASH_AM400B:
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printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
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break;
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case FLASH_AM400T:
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printf ("AM29LV400T (4 Mbit, top boot sector)\n");
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break;
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case FLASH_AM800B:
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printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
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break;
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case FLASH_AM800T:
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printf ("AM29LV800T (8 Mbit, top boot sector)\n");
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break;
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case FLASH_AM160B:
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printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
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break;
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case FLASH_AM160T:
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printf ("AM29LV160T (16 Mbit, top boot sector)\n");
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break;
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case FLASH_AM320B:
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printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
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break;
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case FLASH_AM320T:
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printf ("AM29LV320T (32 Mbit, top boot sector)\n");
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break;
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case FLASH_SST800A:
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printf ("SST39LF/VF800 (8 Mbit, uniform sector size)\n");
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break;
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case FLASH_SST160A:
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printf ("SST39LF/VF160 (16 Mbit, uniform sector size)\n");
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case FLASH_MAN_STM | FLASH_AM040:
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printf ("MM29W040W (512 Kbit, uniform sector size)\n");
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break;
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default:
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printf ("Unknown Chip Type\n");
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@ -253,14 +211,18 @@ static ulong flash_get_size (vu_long * addr, flash_info_t * info)
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case (FLASH_WORD_SIZE) SST_MANUFACT:
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info->flash_id = FLASH_MAN_SST;
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break;
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case (FLASH_WORD_SIZE)STM_MANUFACT:
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info->flash_id = FLASH_MAN_STM;
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break;
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default:
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info->flash_id = FLASH_UNKNOWN;
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info->sector_count = 0;
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info->size = 0;
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printf("Unknown flash manufacturer code: 0x%x\n", value);
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return (0); /* no or unknown flash */
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}
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value = addr2[1]; /* device ID */
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value = addr2[1]; /* device ID */
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switch (value) {
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case (FLASH_WORD_SIZE) AMD_ID_F040B:
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@ -273,99 +235,19 @@ static ulong flash_get_size (vu_long * addr, flash_info_t * info)
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info->sector_count = 8;
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info->size = 0x0080000; /* => 512 ko */
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break;
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case (FLASH_WORD_SIZE) AMD_ID_LV400T:
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info->flash_id += FLASH_AM400T;
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info->sector_count = 11;
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info->size = 0x00080000;
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break; /* => 0.5 MB */
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case (FLASH_WORD_SIZE) AMD_ID_LV400B:
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info->flash_id += FLASH_AM400B;
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info->sector_count = 11;
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info->size = 0x00080000;
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break; /* => 0.5 MB */
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case (FLASH_WORD_SIZE) AMD_ID_LV800T:
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info->flash_id += FLASH_AM800T;
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info->sector_count = 19;
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info->size = 0x00100000;
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break; /* => 1 MB */
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case (FLASH_WORD_SIZE) AMD_ID_LV800B:
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info->flash_id += FLASH_AM800B;
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info->sector_count = 19;
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info->size = 0x00100000;
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break; /* => 1 MB */
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case (FLASH_WORD_SIZE) AMD_ID_LV160T:
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info->flash_id += FLASH_AM160T;
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info->sector_count = 35;
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info->size = 0x00200000;
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break; /* => 2 MB */
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case (FLASH_WORD_SIZE) AMD_ID_LV160B:
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info->flash_id += FLASH_AM160B;
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info->sector_count = 35;
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info->size = 0x00200000;
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break; /* => 2 MB */
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#if 0 /* enable when device IDs are available */
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case (FLASH_WORD_SIZE) AMD_ID_LV320T:
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info->flash_id += FLASH_AM320T;
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info->sector_count = 67;
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info->size = 0x00400000;
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break; /* => 4 MB */
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case (FLASH_WORD_SIZE) AMD_ID_LV320B:
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info->flash_id += FLASH_AM320B;
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info->sector_count = 67;
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info->size = 0x00400000;
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break; /* => 4 MB */
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#endif
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case (FLASH_WORD_SIZE) SST_ID_xF800A:
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info->flash_id += FLASH_SST800A;
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info->sector_count = 16;
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info->size = 0x00100000;
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break; /* => 1 MB */
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case (FLASH_WORD_SIZE) SST_ID_xF160A:
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info->flash_id += FLASH_SST160A;
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info->sector_count = 32;
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info->size = 0x00200000;
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break; /* => 2 MB */
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case (FLASH_WORD_SIZE)STM_ID_M29W040B: /* most likele JSE chip */
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info->flash_id += FLASH_AM040;
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info->sector_count = 8;
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info->size = 0x0080000; /* => 512 ko */
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break;
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default:
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info->flash_id = FLASH_UNKNOWN;
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return (0); /* => no or unknown flash */
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}
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/* set up sector start address table */
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if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
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(info->flash_id == FLASH_AM040)) {
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for (i = 0; i < info->sector_count; i++)
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info->start[i] = base + (i * 0x00010000);
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} else {
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if (info->flash_id & FLASH_BTYPE) {
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/* set sector offsets for bottom boot block type */
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info->start[0] = base + 0x00000000;
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info->start[1] = base + 0x00004000;
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info->start[2] = base + 0x00006000;
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info->start[3] = base + 0x00008000;
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for (i = 4; i < info->sector_count; i++) {
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info->start[i] =
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base + (i * 0x00010000) - 0x00030000;
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}
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} else {
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/* set sector offsets for top boot block type */
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i = info->sector_count - 1;
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info->start[i--] = base + info->size - 0x00004000;
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info->start[i--] = base + info->size - 0x00006000;
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info->start[i--] = base + info->size - 0x00008000;
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for (; i >= 0; i--) {
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info->start[i] = base + i * 0x00010000;
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}
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}
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}
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/* Calculate the sector offsets (Use JSE Optimized code). */
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flash_get_offsets(base, info);
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/* check for protected sectors */
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for (i = 0; i < info->sector_count; i++) {
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@ -505,7 +387,7 @@ int flash_erase (flash_info_t * info, int s_first, int s_last)
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goto DONE;
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wait_for_DQ7 (info, l_sect);
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DONE:
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DONE:
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#endif
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/* reset to read mode */
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addr = (FLASH_WORD_SIZE *) info->start[0];
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@ -603,7 +485,7 @@ static int write_word (flash_info_t * info, ulong dest, ulong data)
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/* Check if Flash is (sufficiently) erased */
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if ((*((volatile FLASH_WORD_SIZE *) dest) &
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(FLASH_WORD_SIZE) data) != (FLASH_WORD_SIZE) data) {
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(FLASH_WORD_SIZE) data) != (FLASH_WORD_SIZE) data) {
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return (2);
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}
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