From 6bdd1377af6d1a17b3b18df06b52362a1b67ad3d Mon Sep 17 00:00:00 2001 From: wdenk Date: Wed, 9 Jun 2004 00:15:33 +0000 Subject: Patch by Stephen Williams, 11 May 2004: Add flash support for ST M29W040B Reduce JSE specific flash.c to remove dead code. --- board/jse/flash.c | 184 ++++++++++-------------------------------------------- 1 file changed, 33 insertions(+), 151 deletions(-) (limited to 'board/jse') diff --git a/board/jse/flash.c b/board/jse/flash.c index 763e8e0255..c462fe0315 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); } -- cgit v1.2.1