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-rw-r--r--board/mvs1/flash.c719
1 files changed, 0 insertions, 719 deletions
diff --git a/board/mvs1/flash.c b/board/mvs1/flash.c
deleted file mode 100644
index a52fe55b09..0000000000
--- a/board/mvs1/flash.c
+++ /dev/null
@@ -1,719 +0,0 @@
-/*
- * (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+monitor_flash_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+monitor_flash_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
-/*-----------------------------------------------------------------------
- */
generated by cgit (git 2.34.1) at 2024-11-20 02:38:55 +0000