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Diffstat (limited to 'board/mvs1/flash.c')
| -rw-r--r-- | board/mvs1/flash.c | 719 |
1 files changed, 719 insertions, 0 deletions
diff --git a/board/mvs1/flash.c b/board/mvs1/flash.c new file mode 100644 index 0000000..75d9048 --- /dev/null +++ b/board/mvs1/flash.c @@ -0,0 +1,719 @@ +/* + * (C) Copyright 2000 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * Changes for MATRIX Vision MVsensor (C) Copyright 2001 + * MATRIX Vision GmbH / hg, info@matrix-vision.de + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <mpc8xx.h> + +#undef MVDEBUG +#ifdef MVDEBUG +#define mvdebug debug +#else +#define mvdebug(p) do {} while (0) +#endif + + +flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */ + + +#ifdef CONFIG_MVS_16BIT_FLASH + #define FLASH_DATA_MASK 0xffff + #define FLASH_SHIFT 0 +#else + #define FLASH_DATA_MASK 0xffffffff + #define FLASH_SHIFT 1 +#endif + + +/*----------------------------------------------------------------------- + * Functions + */ +static ulong flash_get_size (vu_long *address, 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); + +/*----------------------------------------------------------------------- + */ + +unsigned long flash_init (void) +{ + volatile immap_t *immap = (immap_t *)CFG_IMMR; + volatile memctl8xx_t *memctl = &immap->im_memctl; + unsigned long size_b0, size_b1; + int i; + + /* Init: no FLASHes known */ + 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((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]); + + 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); + } + +#if defined (FLASH_BASE1_PRELIM) + size_b1 = flash_get_size((vu_long *)FLASH_BASE1_PRELIM, &flash_info[1]); + + if (size_b1 > size_b0) { + printf ("## ERROR: " + "Bank 1 (0x%08lx = %ld MB) > Bank 0 (0x%08lx = %ld MB)\n", + size_b1, size_b1<<20, + size_b0, size_b0<<20 + ); + flash_info[0].flash_id = FLASH_UNKNOWN; + flash_info[1].flash_id = FLASH_UNKNOWN; + flash_info[0].sector_count = -1; + flash_info[1].sector_count = -1; + flash_info[0].size = 0; + flash_info[1].size = 0; + return (0); + } +#else + size_b1 = 0; +#endif + + /* Remap FLASH according to real size */ + memctl->memc_or0 = CFG_OR_TIMING_FLASH | (-size_b0 & 0xFFFF8000); +#ifdef CONFIG_MVS_16BIT_FLASH + memctl->memc_br0 = (CFG_FLASH_BASE & BR_BA_MSK) | BR_PS_16 | BR_MS_GPCM | BR_V; +#else + memctl->memc_br0 = (CFG_FLASH_BASE & BR_BA_MSK) | BR_PS_32 | BR_MS_GPCM | BR_V; +#endif + + /* Re-do sizing to get full correct info */ + size_b0 = flash_get_size((vu_long *)CFG_FLASH_BASE, &flash_info[0]); + + flash_get_offsets (CFG_FLASH_BASE, &flash_info[0]); + + /* monitor protection ON by default */ + flash_protect(FLAG_PROTECT_SET, + CFG_FLASH_BASE, + CFG_FLASH_BASE+CFG_MONITOR_LEN-1, + &flash_info[0]); + + if (size_b1) { + memctl->memc_or1 = CFG_OR_TIMING_FLASH | (-size_b1 & 0xFFFF8000); +#ifdef CONFIG_MVS_16BIT_FLASH + memctl->memc_br1 = ((CFG_FLASH_BASE + size_b0) & BR_BA_MSK) | + BR_PS_16 | BR_MS_GPCM | BR_V; +#else + memctl->memc_br1 = ((CFG_FLASH_BASE + size_b0) & BR_BA_MSK) | + BR_PS_32 | BR_MS_GPCM | BR_V; +#endif + /* Re-do sizing to get full correct info */ + size_b1 = flash_get_size((vu_long *)(CFG_FLASH_BASE + size_b0), + &flash_info[1]); + + flash_get_offsets (CFG_FLASH_BASE + size_b0, &flash_info[1]); + + /* monitor protection ON by default */ + flash_protect(FLAG_PROTECT_SET, + CFG_FLASH_BASE, + CFG_FLASH_BASE+CFG_MONITOR_LEN-1, + &flash_info[1]); + } else { + memctl->memc_br1 = 0; /* invalidate bank */ + + flash_info[1].flash_id = FLASH_UNKNOWN; + flash_info[1].sector_count = -1; + } + + flash_info[0].size = size_b0; + flash_info[1].size = size_b1; + + return (size_b0 + size_b1); +} + +/*----------------------------------------------------------------------- + */ +static void flash_get_offsets (ulong base, flash_info_t *info) +{ + int i; + + /* set up sector start address table */ + if (info->flash_id & FLASH_BTYPE) + { /* bottom boot sector types - these are the useful ones! */ + /* set sector offsets for bottom boot block type */ + if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) + { /* AMDLV320B has 8 x 8k bottom boot sectors */ + for (i = 0; i < 8; i++) /* +8k */ + info->start[i] = base + (i * (0x00002000 << FLASH_SHIFT)); + for (; i < info->sector_count; i++) /* +64k */ + info->start[i] = base + (i * (0x00010000 << FLASH_SHIFT)) - (0x00070000 << FLASH_SHIFT); + } + else + { /* other types have 4 bottom boot sectors (16,8,8,32) */ + i = 0; + info->start[i++] = base + 0x00000000; /* - */ + info->start[i++] = base + (0x00004000 << FLASH_SHIFT); /* +16k */ + info->start[i++] = base + (0x00006000 << FLASH_SHIFT); /* +8k */ + info->start[i++] = base + (0x00008000 << FLASH_SHIFT); /* +8k */ + info->start[i++] = base + (0x00010000 << FLASH_SHIFT); /* +32k */ + for (; i < info->sector_count; i++) /* +64k */ + info->start[i] = base + (i * (0x00010000 << FLASH_SHIFT)) - (0x00030000 << FLASH_SHIFT); + } + } + else + { /* top boot sector types - not so useful */ + /* set sector offsets for top boot block type */ + if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) + { /* AMDLV320T has 8 x 8k top boot sectors */ + for (i = 0; i < info->sector_count - 8; i++) /* +64k */ + info->start[i] = base + (i * (0x00010000 << FLASH_SHIFT)); + for (; i < info->sector_count; i++) /* +8k */ + info->start[i] = base + (i * (0x00002000 << FLASH_SHIFT)); + } + else + { /* other types have 4 top boot sectors (32,8,8,16) */ + for (i = 0; i < info->sector_count - 4; i++) /* +64k */ + info->start[i] = base + (i * (0x00010000 << FLASH_SHIFT)); + + info->start[i++] = base + info->size - (0x00010000 << FLASH_SHIFT); /* -32k */ + info->start[i++] = base + info->size - (0x00008000 << FLASH_SHIFT); /* -8k */ + info->start[i++] = base + info->size - (0x00006000 << FLASH_SHIFT); /* -8k */ + info->start[i] = base + info->size - (0x00004000 << FLASH_SHIFT); /* -16k */ + } + } +} + +/*----------------------------------------------------------------------- + */ +void flash_print_info (flash_info_t *info) +{ + int i; + + if (info->flash_id == FLASH_UNKNOWN) { + printf ("missing or unknown FLASH type\n"); + return; + } + + 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 ("ST "); break; + default: printf ("Unknown Vendor "); break; + } + + switch (info->flash_id & FLASH_TYPEMASK) { + 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_STMW320DB: printf ("M29W320B (32 Mbit, bottom boot sect)\n"); + break; + case FLASH_STMW320DT: printf ("M29W320T (32 Mbit, top boot sector)\n"); + break; + default: printf ("Unknown Chip Type\n"); + break; + } + + printf (" Size: %ld MB in %d Sectors\n", + info->size >> 20, info->sector_count); + + printf (" Sector Start Addresses:"); + for (i=0; i<info->sector_count; ++i) { + if ((i % 5) == 0) + printf ("\n "); + printf (" %08lX%s", + info->start[i], + info->protect[i] ? " (RO)" : " " + ); + } + printf ("\n"); +} + +/*----------------------------------------------------------------------- + */ + + +/*----------------------------------------------------------------------- + */ + +/* + * The following code cannot be run from FLASH! + */ + +#define AMD_ID_LV160T_MVS (AMD_ID_LV160T & FLASH_DATA_MASK) +#define AMD_ID_LV160B_MVS (AMD_ID_LV160B & FLASH_DATA_MASK) +#define AMD_ID_LV320T_MVS (AMD_ID_LV320T & FLASH_DATA_MASK) +#define AMD_ID_LV320B_MVS (AMD_ID_LV320B & FLASH_DATA_MASK) +#define STM_ID_W320DT_MVS (STM_ID_29W320DT & FLASH_DATA_MASK) +#define STM_ID_W320DB_MVS (STM_ID_29W320DB & FLASH_DATA_MASK) +#define AMD_MANUFACT_MVS (AMD_MANUFACT & FLASH_DATA_MASK) +#define FUJ_MANUFACT_MVS (FUJ_MANUFACT & FLASH_DATA_MASK) +#define STM_MANUFACT_MVS (STM_MANUFACT & FLASH_DATA_MASK) + +#define AUTOSELECT_ADDR1 0x0555 +#define AUTOSELECT_ADDR2 0x02AA +#define AUTOSELECT_ADDR3 AUTOSELECT_ADDR1 + +#define AUTOSELECT_DATA1 (0x00AA00AA & FLASH_DATA_MASK) +#define AUTOSELECT_DATA2 (0x00550055 & FLASH_DATA_MASK) +#define AUTOSELECT_DATA3 (0x00900090 & FLASH_DATA_MASK) + +#define RESET_BANK_DATA (0x00F000F0 & FLASH_DATA_MASK) + +static ulong flash_get_size (vu_long *address, flash_info_t *info) +{ + short i; +#ifdef CONFIG_MVS_16BIT_FLASH + ushort value; + vu_short *addr = (vu_short *)address; +#else + ulong value; + vu_long *addr = (vu_long *)address; +#endif + ulong base = (ulong)address; + + /* Write auto select command: read Manufacturer ID */ + addr[AUTOSELECT_ADDR1] = AUTOSELECT_DATA1; + addr[AUTOSELECT_ADDR2] = AUTOSELECT_DATA2; + addr[AUTOSELECT_ADDR3] = AUTOSELECT_DATA3; + + value = addr[0]; /* manufacturer ID */ + switch (value) { + case AMD_MANUFACT_MVS: + info->flash_id = FLASH_MAN_AMD; + break; + case FUJ_MANUFACT_MVS: + info->flash_id = FLASH_MAN_FUJ; + break; + case STM_MANUFACT_MVS: + info->flash_id = FLASH_MAN_STM; + break; + default: + info->flash_id = FLASH_UNKNOWN; + info->sector_count = 0; + info->size = 0; + return (0); /* no or unknown flash */ + } + + value = addr[1]; /* device ID */ + switch (value) { + case AMD_ID_LV160T_MVS: + info->flash_id += FLASH_AM160T; + info->sector_count = 37; + info->size = (0x00200000 << FLASH_SHIFT); + break; /* => 2 or 4 MB */ + + case AMD_ID_LV160B_MVS: + info->flash_id += FLASH_AM160B; + info->sector_count = 37; + info->size = (0x00200000 << FLASH_SHIFT); + break; /* => 2 or 4 MB */ + + case AMD_ID_LV320T_MVS: + info->flash_id += FLASH_AM320T; + info->sector_count = 71; + info->size = (0x00400000 << FLASH_SHIFT); + break; /* => 4 or 8 MB */ + + case AMD_ID_LV320B_MVS: + info->flash_id += FLASH_AM320B; + info->sector_count = 71; + info->size = (0x00400000 << FLASH_SHIFT); + break; /* => 4 or 8MB */ + + case STM_ID_W320DT_MVS: + info->flash_id += FLASH_STMW320DT; + info->sector_count = 67; + info->size = (0x00400000 << FLASH_SHIFT); + break; /* => 4 or 8 MB */ + + case STM_ID_W320DB_MVS: + info->flash_id += FLASH_STMW320DB; + info->sector_count = 67; + info->size = (0x00400000 << FLASH_SHIFT); + break; /* => 4 or 8MB */ + + default: + info->flash_id = FLASH_UNKNOWN; + return (0); /* => no or unknown flash */ + + } + + /* set up sector start address table */ + flash_get_offsets (base, info); + + /* check for protected sectors */ + for (i = 0; i < info->sector_count; i++) { + /* read sector protection at sector address, (A7 .. A0) = 0x02 */ + /* D0 = 1 if protected */ +#ifdef CONFIG_MVS_16BIT_FLASH + addr = (vu_short *)(info->start[i]); +#else + addr = (vu_long *)(info->start[i]); +#endif + info->protect[i] = addr[2] & 1; + } + + /* + * Prevent writes to uninitialized FLASH. + */ + if (info->flash_id != FLASH_UNKNOWN) { +#ifdef CONFIG_MVS_16BIT_FLASH + addr = (vu_short *)info->start[0]; +#else + addr = (vu_long *)info->start[0]; +#endif + *addr = RESET_BANK_DATA; /* reset bank */ + } + + return (info->size); +} + + +/*----------------------------------------------------------------------- + */ + +#define ERASE_ADDR1 0x0555 +#define ERASE_ADDR2 0x02AA +#define ERASE_ADDR3 ERASE_ADDR1 +#define ERASE_ADDR4 ERASE_ADDR1 +#define ERASE_ADDR5 ERASE_ADDR2 + +#define ERASE_DATA1 (0x00AA00AA & FLASH_DATA_MASK) +#define ERASE_DATA2 (0x00550055 & FLASH_DATA_MASK) +#define ERASE_DATA3 (0x00800080 & FLASH_DATA_MASK) +#define ERASE_DATA4 ERASE_DATA1 +#define ERASE_DATA5 ERASE_DATA2 + +#define ERASE_SECTOR_DATA (0x00300030 & FLASH_DATA_MASK) +#define ERASE_CHIP_DATA (0x00100010 & FLASH_DATA_MASK) +#define ERASE_CONFIRM_DATA (0x00800080 & FLASH_DATA_MASK) + +int flash_erase (flash_info_t *info, int s_first, int s_last) +{ +#ifdef CONFIG_MVS_16BIT_FLASH + vu_short *addr = (vu_short *)(info->start[0]); +#else + vu_long *addr = (vu_long *)(info->start[0]); +#endif + int flag, prot, sect, l_sect; + ulong start, now, last; + + if ((s_first < 0) || (s_first > s_last)) { + if (info->flash_id == FLASH_UNKNOWN) { + printf ("- missing\n"); + } else { + printf ("- no sectors to erase\n"); + } + return 1; + } + + if ((info->flash_id == FLASH_UNKNOWN) || + (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) { + if (info->protect[sect]) { + prot++; + } + } + + if (prot) { + printf ("- Warning: %d protected sectors will not be erased!\n", + prot); + } else { + printf ("\n"); + } + + l_sect = -1; + + /* Disable interrupts which might cause a timeout here */ + flag = disable_interrupts(); + + addr[ERASE_ADDR1] = ERASE_DATA1; + addr[ERASE_ADDR2] = ERASE_DATA2; + addr[ERASE_ADDR3] = ERASE_DATA3; + addr[ERASE_ADDR4] = ERASE_DATA4; + addr[ERASE_ADDR5] = ERASE_DATA5; + + /* Start erase on unprotected sectors */ + for (sect = s_first; sect<=s_last; sect++) { + if (info->protect[sect] == 0) { /* not protected */ +#ifdef CONFIG_MVS_16BIT_FLASH + addr = (vu_short *)(info->start[sect]); +#else + addr = (vu_long *)(info->start[sect]); +#endif + addr[0] = ERASE_SECTOR_DATA; + 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; +#ifdef CONFIG_MVS_16BIT_FLASH + addr = (vu_short *)(info->start[l_sect]); +#else + addr = (vu_long *)(info->start[l_sect]); +#endif + while ((addr[0] & ERASE_CONFIRM_DATA) != ERASE_CONFIRM_DATA) { + if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) { + printf ("Timeout\n"); + return 1; + } + /* show that we're waiting */ + if ((now - last) > 1000) { /* every second */ + putc ('.'); + last = now; + } + } + +DONE: + /* reset to read mode */ +#ifdef CONFIG_MVS_16BIT_FLASH + addr = (vu_short *)info->start[0]; +#else + addr = (vu_long *)info->start[0]; +#endif + addr[0] = RESET_BANK_DATA; /* reset bank */ + + printf (" done\n"); + return 0; +} + + +/*----------------------------------------------------------------------- + * Copy memory to flash, returns: + * 0 - OK + * 1 - write timeout + * 2 - Flash not erased + */ + +int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) +{ +#define BUFF_INC 4 + ulong cp, wp, data; + int i, l, rc; + + mvdebug (("+write_buff %p ==> 0x%08lx, count = 0x%08lx\n", src, addr, cnt)); + + wp = (addr & ~3); /* get lower word aligned address */ + /* + * handle unaligned start bytes + */ + if ((l = addr - wp) != 0) { + mvdebug ((" handle unaligned start bytes (cnt = 0x%08%lx)\n", cnt)); + data = 0; + for (i=0, cp=wp; i<l; ++i, ++cp) { + data = (data << 8) | (*(uchar *)cp); + } + for (; i<BUFF_INC && cnt>0; ++i) { + data = (data << 8) | *src++; + --cnt; + ++cp; + } + for (; cnt==0 && i<BUFF_INC; ++i, ++cp) { + data = (data << 8) | (*(uchar *)cp); + } + + if ((rc = write_word(info, wp, data)) != 0) { + return (rc); + } + wp += BUFF_INC; + } + + /* + * handle (half)word aligned part + */ + mvdebug ((" handle word aligned part (cnt = 0x%08%lx)\n", cnt)); + while (cnt >= BUFF_INC) { + data = 0; + for (i=0; i<BUFF_INC; ++i) { + data = (data << 8) | *src++; + } + if ((rc = write_word(info, wp, data)) != 0) { + return (rc); + } + wp += BUFF_INC; + cnt -= BUFF_INC; + } + + if (cnt == 0) { + return (0); + } + + /* + * handle unaligned tail bytes + */ + mvdebug ((" handle unaligned tail bytes (cnt = 0x%08%lx)\n", cnt)); + data = 0; + for (i=0, cp=wp; i<BUFF_INC && cnt>0; ++i, ++cp) { + data = (data << 8) | *src++; + --cnt; + } + for (; i<BUFF_INC; ++i, ++cp) { + data = (data << 8) | (*(uchar *)cp); + } + + return (write_word(info, wp, data)); +} + +#define WRITE_ADDR1 0x0555 +#define WRITE_ADDR2 0x02AA +#define WRITE_ADDR3 WRITE_ADDR1 + +#define WRITE_DATA1 (0x00AA00AA & FLASH_DATA_MASK) +#define WRITE_DATA2 (0x00550055 & FLASH_DATA_MASK) +#define WRITE_DATA3 (0x00A000A0 & FLASH_DATA_MASK) + +#define WRITE_CONFIRM_DATA ERASE_CONFIRM_DATA + +#ifndef CONFIG_MVS_16BIT_FLASH +/*----------------------------------------------------------------------- + * Write a word to Flash, returns: + * 0 - OK + * 1 - write timeout + * 2 - Flash not erased + */ +static int write_word (flash_info_t *info, ulong dest, ulong data) +{ + vu_long *addr = (vu_long *)(info->start[0]); + ulong start; + int flag; + + mvdebug (("+write_word (to 0x%08lx)\n", dest)); + /* Check if Flash is (sufficiently) erased */ + if ((*((vu_long *)dest) & data) != data) { + return (2); + } + /* Disable interrupts which might cause a timeout here */ + flag = disable_interrupts(); + + addr[WRITE_ADDR1] = WRITE_DATA1; + addr[WRITE_ADDR2] = WRITE_DATA2; + addr[WRITE_ADDR3] = WRITE_DATA3; + + *((vu_long *)dest) = data; + + /* re-enable interrupts if necessary */ + if (flag) + enable_interrupts(); + + /* data polling for D7 */ + start = get_timer (0); + addr = (vu_long *)dest; + while ((*addr & WRITE_CONFIRM_DATA) != (data & WRITE_CONFIRM_DATA)) { + if (get_timer(start) > CFG_FLASH_WRITE_TOUT) { + return (1); + } + } + + mvdebug (("-write_word\n")); + return (0); +} +#else /* CONFIG_MVS_16BIT_FLASH */ +/*----------------------------------------------------------------------- + * Write a halfword to Flash, returns: + * 0 - OK + * 1 - write timeout + * 2 - Flash not erased + */ +static int write_halfword (flash_info_t *info, ulong dest, ushort data) +{ + vu_short *addr = (vu_short *)(info->start[0]); + ulong start; + int flag; + + mvdebug (("+write_halfword (to 0x%08lx)\n", dest)); + /* Check if Flash is (sufficiently) erased */ + if ((*((vu_short *)dest) & data) != data) { + return (2); + } + /* Disable interrupts which might cause a timeout here */ + flag = disable_interrupts(); + + addr[WRITE_ADDR1] = WRITE_DATA1; + addr[WRITE_ADDR2] = WRITE_DATA2; + addr[WRITE_ADDR3] = WRITE_DATA3; + + *((vu_short *)dest) = data; + + /* re-enable interrupts if necessary */ + if (flag) + enable_interrupts(); + + /* data polling for D7 */ + start = get_timer (0); + addr = (vu_short *)dest; + while ((*addr & WRITE_CONFIRM_DATA) != (data & WRITE_CONFIRM_DATA)) { + if (get_timer(start) > CFG_FLASH_WRITE_TOUT) { + return (1); + } + } + mvdebug (("-write_halfword\n")); + return (0); +} + + +/*----------------------------------------------------------------------- + * Write a word to Flash, returns: + * 0 - OK + * 1 - write timeout + * 2 - Flash not erased + */ +static int write_word (flash_info_t *info, ulong dest, ulong data) +{ + int result = 0; + + if (write_halfword (info, dest, (data & ~FLASH_DATA_MASK) >> 16) == 0) + { + dest += 2; + data = data & FLASH_DATA_MASK; + result = write_halfword (info, dest, data); + } + return result; +} +#endif +/*----------------------------------------------------------------------- + */ |