diff options
Diffstat (limited to 'board/LEOX/elpt860/flash.c')
| -rw-r--r-- | board/LEOX/elpt860/flash.c | 230 |
1 files changed, 115 insertions, 115 deletions
diff --git a/board/LEOX/elpt860/flash.c b/board/LEOX/elpt860/flash.c index 7107aaa..c1b3b85 100644 --- a/board/LEOX/elpt860/flash.c +++ b/board/LEOX/elpt860/flash.c @@ -79,41 +79,41 @@ static int write_byte (flash_info_t *info, ulong dest, uchar data); /*----------------------------------------------------------------------- */ -unsigned long +unsigned long flash_init (void) { volatile immap_t *immap = (immap_t *)CFG_IMMR; volatile memctl8xx_t *memctl = &immap->im_memctl; unsigned long size_b0; int i; - + /* Init: no FLASHes known */ - for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) + for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) { flash_info[i].flash_id = FLASH_UNKNOWN; } - + /* Static FLASH Bank configuration here - FIXME XXX */ - - size_b0 = flash_get_size ((volatile unsigned char *)FLASH_BASE0_PRELIM, + + size_b0 = flash_get_size ((volatile unsigned char *)FLASH_BASE0_PRELIM, &flash_info[0]); - - if ( flash_info[0].flash_id == FLASH_UNKNOWN ) + + if ( flash_info[0].flash_id == FLASH_UNKNOWN ) { printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", size_b0, size_b0<<20); } - + /* Remap FLASH according to real size */ memctl->memc_or0 = CFG_OR_TIMING_FLASH | (-size_b0 & OR_AM_MSK); memctl->memc_br0 = (CFG_FLASH_BASE & BR_BA_MSK) | BR_MS_GPCM | BR_PS_8 | BR_V; - + /* Re-do sizing to get full correct info */ - size_b0 = flash_get_size ((volatile unsigned char *)CFG_FLASH_BASE, + size_b0 = flash_get_size ((volatile unsigned char *)CFG_FLASH_BASE, &flash_info[0]); - + flash_get_offsets (CFG_FLASH_BASE, &flash_info[0]); - + #if CFG_MONITOR_BASE >= CFG_FLASH_BASE /* monitor protection ON by default */ flash_protect (FLAG_PROTECT_SET, @@ -121,7 +121,7 @@ flash_init (void) CFG_MONITOR_BASE + monitor_flash_len-1, &flash_info[0]); #endif - + #ifdef CFG_ENV_IS_IN_FLASH /* ENV protection ON by default */ flash_protect(FLAG_PROTECT_SET, @@ -131,14 +131,14 @@ flash_init (void) #endif flash_info[0].size = size_b0; - + return (size_b0); } /*----------------------------------------------------------------------- */ -static void -flash_get_offsets (ulong base, +static void +flash_get_offsets (ulong base, flash_info_t *info) { int i; @@ -146,7 +146,7 @@ flash_get_offsets (ulong base, #define SECTOR_64KB 0x00010000 /* set up sector start adress table */ - for (i = 0; i < info->sector_count; i++) + for (i = 0; i < info->sector_count; i++) { info->start[i] = base + (i * SECTOR_64KB); } @@ -154,38 +154,38 @@ flash_get_offsets (ulong base, /*----------------------------------------------------------------------- */ -void +void flash_print_info (flash_info_t *info) { int i; - - if ( info->flash_id == FLASH_UNKNOWN ) + + if ( info->flash_id == FLASH_UNKNOWN ) { printf ("missing or unknown FLASH type\n"); return; } - switch ( info->flash_id & FLASH_VENDMASK ) + switch ( info->flash_id & FLASH_VENDMASK ) { case FLASH_MAN_AMD: printf ("AMD "); break; case FLASH_MAN_FUJ: printf ("FUJITSU "); break; case FLASH_MAN_STM: printf ("STM (Thomson) "); break; default: printf ("Unknown Vendor "); break; } - - switch ( info->flash_id & FLASH_TYPEMASK ) + + switch ( info->flash_id & FLASH_TYPEMASK ) { case FLASH_AM040: printf ("AM29F040 (4 Mbits)\n"); break; default: printf ("Unknown Chip Type\n"); break; } - - printf (" Size: %ld KB in %d Sectors\n", + + printf (" Size: %ld KB in %d Sectors\n", info->size >> 10, info->sector_count); - + printf (" Sector Start Addresses:"); - for (i=0; i<info->sector_count; ++i) + for (i=0; i<info->sector_count; ++i) { if ((i % 5) == 0) printf ("\n "); @@ -210,9 +210,9 @@ flash_print_info (flash_info_t *info) * The following code cannot be run from FLASH! */ -static ulong -flash_get_size (volatile unsigned char *addr, - flash_info_t *info) +static ulong +flash_get_size (volatile unsigned char *addr, + flash_info_t *info) { short i; uchar value; @@ -222,10 +222,10 @@ flash_get_size (volatile unsigned char *addr, addr[0x0555] = 0xAA; addr[0x02AA] = 0x55; addr[0x0555] = 0x90; - + value = addr[0]; - switch ( value ) + switch ( value ) { /* case AMD_MANUFACT: */ case 0x01: @@ -246,10 +246,10 @@ flash_get_size (volatile unsigned char *addr, info->size = 0; return (0); /* no or unknown flash */ } - + value = addr[1]; /* device ID */ - - switch ( value ) + + switch ( value ) { case STM_ID_F040B: case AMD_ID_F040B: @@ -264,13 +264,13 @@ flash_get_size (volatile unsigned char *addr, } /* set up sector start adress table */ - for (i = 0; i < info->sector_count; i++) + for (i = 0; i < info->sector_count; i++) { info->start[i] = base + (i * 0x00010000); } - + /* check for protected sectors */ - for (i = 0; i < info->sector_count; i++) + for (i = 0; i < info->sector_count; i++) { /* read sector protection at sector address, (A7 .. A0) = 0x02 */ /* D0 = 1 if protected */ @@ -281,13 +281,13 @@ flash_get_size (volatile unsigned char *addr, /* * Prevent writes to uninitialized FLASH. */ - if ( info->flash_id != FLASH_UNKNOWN ) + if ( info->flash_id != FLASH_UNKNOWN ) { addr = (volatile unsigned char *)info->start[0]; - + *addr = 0xF0; /* reset bank */ } - + return (info->size); } @@ -296,21 +296,21 @@ flash_get_size (volatile unsigned char *addr, */ int -flash_erase (flash_info_t *info, - int s_first, +flash_erase (flash_info_t *info, + int s_first, int s_last) { volatile unsigned char *addr = (volatile unsigned char *)(info->start[0]); int flag, prot, sect, l_sect; ulong start, now, last; - - if ( (s_first < 0) || (s_first > s_last) ) + + if ( (s_first < 0) || (s_first > s_last) ) { - if ( info->flash_id == FLASH_UNKNOWN ) + if ( info->flash_id == FLASH_UNKNOWN ) { printf ("- missing\n"); - } - else + } + else { printf ("- no sectors to erase\n"); } @@ -318,44 +318,44 @@ flash_erase (flash_info_t *info, } if ( (info->flash_id == FLASH_UNKNOWN) || - (info->flash_id > FLASH_AMD_COMP) ) + (info->flash_id > FLASH_AMD_COMP) ) { printf ("Can't erase unknown flash type %08lx - aborted\n", info->flash_id); return ( 1 ); } - + prot = 0; - for (sect=s_first; sect<=s_last; ++sect) + for (sect=s_first; sect<=s_last; ++sect) { - if ( info->protect[sect] ) + if ( info->protect[sect] ) { prot++; } } - - if ( prot ) + + if ( prot ) { printf ("- Warning: %d protected sectors will not be erased!\n", prot); - } - else + } + else { printf ("\n"); } - + l_sect = -1; - + /* Disable interrupts which might cause a timeout here */ flag = disable_interrupts(); - + addr[0x0555] = 0xAA; addr[0x02AA] = 0x55; addr[0x0555] = 0x80; addr[0x0555] = 0xAA; addr[0x02AA] = 0x55; - + /* Start erase on unprotected sectors */ - for (sect = s_first; sect<=s_last; sect++) + for (sect = s_first; sect<=s_last; sect++) { if (info->protect[sect] == 0) /* not protected */ { @@ -364,26 +364,26 @@ flash_erase (flash_info_t *info, l_sect = sect; } } - + /* re-enable interrupts if necessary */ if ( flag ) enable_interrupts(); - + /* wait at least 80us - let's wait 1 ms */ udelay (1000); - + /* * We wait for the last triggered sector */ if ( l_sect < 0 ) goto DONE; - + start = get_timer (0); last = start; addr = (volatile unsigned char *)(info->start[l_sect]); - while ( (addr[0] & 0x80) != 0x80 ) + while ( (addr[0] & 0x80) != 0x80 ) { - if ( (now = get_timer(start)) > CFG_FLASH_ERASE_TOUT ) + if ( (now = get_timer(start)) > CFG_FLASH_ERASE_TOUT ) { printf ("Timeout\n"); return ( 1 ); @@ -395,14 +395,14 @@ flash_erase (flash_info_t *info, last = now; } } - + DONE: /* reset to read mode */ addr = (volatile unsigned char *)info->start[0]; addr[0] = 0xF0; /* reset bank */ - + printf (" done\n"); - + return ( 0 ); } @@ -413,10 +413,10 @@ DONE: * 2 - Flash not erased */ -int -write_buff (flash_info_t *info, - uchar *src, - ulong addr, +int +write_buff (flash_info_t *info, + uchar *src, + ulong addr, ulong cnt) { ulong cp, wp, data; @@ -428,16 +428,16 @@ write_buff (flash_info_t *info, /* Width of the data bus: 8 bits */ wp = addr; - + while ( cnt ) { bdata = *src++; - + if ( (rc = write_byte(info, wp, bdata)) != 0 ) { return (rc); } - + ++wp; --cnt; } @@ -449,72 +449,72 @@ write_buff (flash_info_t *info, /* Width of the data bus: 32 bits */ wp = (addr & ~3); /* get lower word aligned address */ - + /* * handle unaligned start bytes */ - if ( (l = addr - wp) != 0 ) + if ( (l = addr - wp) != 0 ) { data = 0; - for (i=0, cp=wp; i<l; ++i, ++cp) + for (i=0, cp=wp; i<l; ++i, ++cp) { data = (data << 8) | (*(uchar *)cp); } - for (; i<4 && cnt>0; ++i) + for (; i<4 && cnt>0; ++i) { data = (data << 8) | *src++; --cnt; ++cp; } - for (; cnt==0 && i<4; ++i, ++cp) + for (; cnt==0 && i<4; ++i, ++cp) { data = (data << 8) | (*(uchar *)cp); } - - if ( (rc = write_word(info, wp, data)) != 0 ) + + if ( (rc = write_word(info, wp, data)) != 0 ) { return (rc); } wp += 4; } - + /* * handle word aligned part */ - while ( cnt >= 4 ) + while ( cnt >= 4 ) { data = 0; - for (i=0; i<4; ++i) + for (i=0; i<4; ++i) { data = (data << 8) | *src++; } - if ( (rc = write_word(info, wp, data)) != 0 ) + if ( (rc = write_word(info, wp, data)) != 0 ) { return (rc); } wp += 4; cnt -= 4; } - - if ( cnt == 0 ) + + if ( cnt == 0 ) { return (0); } - + /* * handle unaligned tail bytes */ data = 0; - for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) + for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) { data = (data << 8) | *src++; --cnt; } - for (; i<4; ++i, ++cp) + for (; i<4; ++i, ++cp) { data = (data << 8) | (*(uchar *)cp); } - + return (write_word(info, wp, data)); } } @@ -525,38 +525,38 @@ write_buff (flash_info_t *info, * 1 - write timeout * 2 - Flash not erased */ -static int -write_word (flash_info_t *info, - ulong dest, +static int +write_word (flash_info_t *info, + ulong dest, ulong data) { vu_long *addr = (vu_long*)(info->start[0]); ulong start; int flag; - + /* Check if Flash is (sufficiently) erased */ - if ( (*((vu_long *)dest) & data) != data ) + if ( (*((vu_long *)dest) & data) != data ) { return (2); } /* Disable interrupts which might cause a timeout here */ flag = disable_interrupts(); - + addr[0x0555] = 0x00AA00AA; addr[0x02AA] = 0x00550055; addr[0x0555] = 0x00A000A0; - + *((vu_long *)dest) = data; - + /* re-enable interrupts if necessary */ if ( flag ) enable_interrupts(); /* data polling for D7 */ start = get_timer (0); - while ( (*((vu_long *)dest) & 0x00800080) != (data & 0x00800080) ) + while ( (*((vu_long *)dest) & 0x00800080) != (data & 0x00800080) ) { - if ( get_timer(start) > CFG_FLASH_WRITE_TOUT ) + if ( get_timer(start) > CFG_FLASH_WRITE_TOUT ) { return (1); } @@ -571,38 +571,38 @@ write_word (flash_info_t *info, * 1 - write timeout * 2 - Flash not erased */ -static int -write_byte (flash_info_t *info, - ulong dest, +static int +write_byte (flash_info_t *info, + ulong dest, uchar data) { volatile unsigned char *addr = (volatile unsigned char *)(info->start[0]); ulong start; int flag; - + /* Check if Flash is (sufficiently) erased */ - if ( (*((volatile unsigned char *)dest) & data) != data ) + if ( (*((volatile unsigned char *)dest) & data) != data ) { return (2); } /* Disable interrupts which might cause a timeout here */ flag = disable_interrupts(); - + addr[0x0555] = 0xAA; addr[0x02AA] = 0x55; addr[0x0555] = 0xA0; - + *((volatile unsigned char *)dest) = data; - + /* re-enable interrupts if necessary */ if ( flag ) enable_interrupts(); /* data polling for D7 */ start = get_timer (0); - while ( (*((volatile unsigned char *)dest) & 0x80) != (data & 0x80) ) + while ( (*((volatile unsigned char *)dest) & 0x80) != (data & 0x80) ) { - if ( get_timer(start) > CFG_FLASH_WRITE_TOUT ) + if ( get_timer(start) > CFG_FLASH_WRITE_TOUT ) { return (1); } |