[U-Boot] [PATCH] board: Remove overlooked vestiges of "dave" board.
Robert P. J. Day
rpjday at crashcourse.ca
Thu Apr 14 12:15:07 CEST 2016
Apparently, all "dave"-related vendor content was removed in commit
5344cc1a82fcc2817d4671696b3939b0dfa4323e; remove remaining directory
board/dave/, which consists solely of board/dave/common/flash.c.
Signed-off-by: Robert P. J. Day <rpjday at crashcourse.ca>
---
there is also a board/davedenx/aria/, i have no idea if that is
related.
diff --git a/board/dave/common/flash.c b/board/dave/common/flash.c
deleted file mode 100644
index f05adf9..0000000
--- a/board/dave/common/flash.c
+++ /dev/null
@@ -1,691 +0,0 @@
-/*
- * (C) Copyright 2001
- * Stefan Roese, esd gmbh germany, stefan.roese at esd-electronics.com
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <common.h>
-#include <asm/processor.h>
-
-flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
-
-/*-----------------------------------------------------------------------
- * Functions
- */
-static int write_word (flash_info_t *info, ulong dest, ulong data);
-
-/*-----------------------------------------------------------------------
- */
-static void flash_get_offsets (ulong base, flash_info_t *info)
-{
- int i;
- short n;
-
- /* set up sector start address table */
- if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
- ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM640U)) {
- for (i = 0; i < info->sector_count; i++)
- info->start[i] = base + (i * 0x00010000);
- } else if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL322B) ||
- ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL323B) ||
- ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
- ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL324B)) {
- /* set sector offsets for bottom boot block type */
- for (i=0; i<8; ++i) { /* 8 x 8k boot sectors */
- info->start[i] = base;
- base += 8 << 10;
- }
- while (i < info->sector_count) { /* 64k regular sectors */
- info->start[i] = base;
- base += 64 << 10;
- ++i;
- }
- } else if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL322T) ||
- ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL323T) ||
- ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
- ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL324T)) {
- /* set sector offsets for top boot block type */
- base += info->size;
- i = info->sector_count;
- for (n=0; n<8; ++n) { /* 8 x 8k boot sectors */
- base -= 8 << 10;
- --i;
- info->start[i] = base;
- }
- while (i > 0) { /* 64k regular sectors */
- base -= 64 << 10;
- --i;
- info->start[i] = base;
- }
- } 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;
- }
- }
- }
-}
-
-/*-----------------------------------------------------------------------
- */
-void flash_print_info (flash_info_t *info)
-{
- int i;
- int k;
- int size;
- int erased;
- volatile unsigned long *flash;
-
- 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_SST: printf ("SST "); break;
- case FLASH_MAN_STM: printf ("ST "); break;
- default: printf ("Unknown Vendor "); break;
- }
-
- switch (info->flash_id & FLASH_TYPEMASK) {
- 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_AM320T: printf ("AM29LV320T (32 M, top sector)\n");
- break;
- case FLASH_AM320B: printf ("AM29LV320B (32 M, bottom sector)\n");
- break;
- case FLASH_AMDL322T: printf ("AM29DL322T (32 M, top sector)\n");
- break;
- case FLASH_AMDL322B: printf ("AM29DL322B (32 M, bottom sector)\n");
- break;
- case FLASH_AMDL323T: printf ("AM29DL323T (32 M, top sector)\n");
- break;
- case FLASH_AMDL323B: printf ("AM29DL323B (32 M, bottom sector)\n");
- break;
- case FLASH_AM640U: printf ("AM29LV640D (64 M, uniform 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");
- break;
- case FLASH_STMW320DT: printf ("M29W320DT (32 M, top 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) {
-#ifdef CONFIG_SYS_FLASH_EMPTY_INFO
- /*
- * Check if whole sector is erased
- */
- if (i != (info->sector_count-1))
- size = info->start[i+1] - info->start[i];
- else
- size = info->start[0] + info->size - info->start[i];
- erased = 1;
- flash = (volatile unsigned long *)info->start[i];
- size = size >> 2; /* divide by 4 for longword access */
- for (k=0; k<size; k++)
- {
- if (*flash++ != 0xffffffff)
- {
- erased = 0;
- break;
- }
- }
-
- if ((i % 5) == 0)
- printf ("\n ");
- /* print empty and read-only info */
- printf (" %08lX%s%s",
- info->start[i],
- erased ? " E" : " ",
- info->protect[i] ? "RO " : " ");
-#else
- if ((i % 5) == 0)
- printf ("\n ");
- printf (" %08lX%s",
- info->start[i],
- info->protect[i] ? " (RO)" : " ");
-#endif
-
- }
- printf ("\n");
- return;
-}
-
-/*-----------------------------------------------------------------------
- */
-
-
-/*-----------------------------------------------------------------------
- */
-
-/*
- * The following code cannot be run from FLASH!
- */
-static ulong flash_get_size (vu_long *addr, flash_info_t *info)
-{
- short i;
- short n;
- CONFIG_SYS_FLASH_WORD_SIZE value;
- ulong base = (ulong)addr;
- volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)addr;
-
- debug("[%s, %d] Entering ...\n", __FUNCTION__, __LINE__);
-
- /* Write auto select command: read Manufacturer ID */
- addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
- addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
- addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00900090;
-
- value = addr2[CONFIG_SYS_FLASH_READ0];
-
- switch (value) {
- case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_MANUFACT:
- info->flash_id = FLASH_MAN_AMD;
- break;
- case (CONFIG_SYS_FLASH_WORD_SIZE)FUJ_MANUFACT:
- info->flash_id = FLASH_MAN_FUJ;
- break;
- case (CONFIG_SYS_FLASH_WORD_SIZE)SST_MANUFACT:
- info->flash_id = FLASH_MAN_SST;
- break;
- case (CONFIG_SYS_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;
- return (0); /* no or unknown flash */
- }
-
- value = addr2[CONFIG_SYS_FLASH_READ1]; /* device ID */
-
- switch (value) {
- case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV400T:
- info->flash_id += FLASH_AM400T;
- info->sector_count = 11;
- info->size = 0x00080000;
- break; /* => 0.5 MB */
-
- case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV400B:
- info->flash_id += FLASH_AM400B;
- info->sector_count = 11;
- info->size = 0x00080000;
- break; /* => 0.5 MB */
-
- case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV800T:
- info->flash_id += FLASH_AM800T;
- info->sector_count = 19;
- info->size = 0x00100000;
- break; /* => 1 MB */
-
- case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV800B:
- info->flash_id += FLASH_AM800B;
- info->sector_count = 19;
- info->size = 0x00100000;
- break; /* => 1 MB */
-
- case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV160T:
- info->flash_id += FLASH_AM160T;
- info->sector_count = 35;
- info->size = 0x00200000;
- break; /* => 2 MB */
-
- case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV160B:
- info->flash_id += FLASH_AM160B;
- info->sector_count = 35;
- info->size = 0x00200000;
- break; /* => 2 MB */
-
- case (CONFIG_SYS_FLASH_WORD_SIZE)STM_ID_29W320DT:
- info->flash_id += FLASH_STMW320DT;
- info->sector_count = 67;
- info->size = 0x00400000; break; /* => 4 MB */
-
- case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320T:
- info->flash_id += FLASH_AM320T;
- info->sector_count = 71;
- info->size = 0x00400000; break; /* => 4 MB */
-
- case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320B:
- info->flash_id += FLASH_AM320B;
- info->sector_count = 71;
- info->size = 0x00400000; break; /* => 4 MB */
-
- case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL322T:
- info->flash_id += FLASH_AMDL322T;
- info->sector_count = 71;
- info->size = 0x00400000; break; /* => 4 MB */
-
- case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL322B:
- info->flash_id += FLASH_AMDL322B;
- info->sector_count = 71;
- info->size = 0x00400000; break; /* => 4 MB */
-
- case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL323T:
- info->flash_id += FLASH_AMDL323T;
- info->sector_count = 71;
- info->size = 0x00400000; break; /* => 4 MB */
-
- case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL323B:
- info->flash_id += FLASH_AMDL323B;
- info->sector_count = 71;
- info->size = 0x00400000; break; /* => 4 MB */
-
- case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV640U:
- info->flash_id += FLASH_AM640U;
- info->sector_count = 128;
- info->size = 0x00800000; break; /* => 8 MB */
-
- case (CONFIG_SYS_FLASH_WORD_SIZE)SST_ID_xF800A:
- info->flash_id += FLASH_SST800A;
- info->sector_count = 16;
- info->size = 0x00100000;
- break; /* => 1 MB */
-
- case (CONFIG_SYS_FLASH_WORD_SIZE)SST_ID_xF160A:
- info->flash_id += FLASH_SST160A;
- info->sector_count = 32;
- info->size = 0x00200000;
- break; /* => 2 MB */
-
- 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_TYPEMASK) == FLASH_AM640U)) {
- for (i = 0; i < info->sector_count; i++)
- info->start[i] = base + (i * 0x00010000);
- } else if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL322B) ||
- ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL323B) ||
- ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
- ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL324B)) {
- /* set sector offsets for bottom boot block type */
- for (i=0; i<8; ++i) { /* 8 x 8k boot sectors */
- info->start[i] = base;
- base += 8 << 10;
- }
- while (i < info->sector_count) { /* 64k regular sectors */
- info->start[i] = base;
- base += 64 << 10;
- ++i;
- }
- } else if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL322T) ||
- ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL323T) ||
- ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
- ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL324T)) {
- /* set sector offsets for top boot block type */
- base += info->size;
- i = info->sector_count;
- for (n=0; n<8; ++n) { /* 8 x 8k boot sectors */
- base -= 8 << 10;
- --i;
- info->start[i] = base;
- }
- while (i > 0) { /* 64k regular sectors */
- base -= 64 << 10;
- --i;
- info->start[i] = base;
- }
- } else if ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT) {
- /* set sector offsets for top boot block type */
- base += info->size;
- i = info->sector_count;
- /* 1 x 16k boot sector */
- base -= 16 << 10;
- --i;
- info->start[i] = base;
- /* 2 x 8k boot sectors */
- for (n=0; n<2; ++n) {
- base -= 8 << 10;
- --i;
- info->start[i] = base;
- }
- /* 1 x 32k boot sector */
- base -= 32 << 10;
- --i;
- info->start[i] = base;
-
- while (i > 0) { /* 64k regular sectors */
- base -= 64 << 10;
- --i;
- info->start[i] = base;
- }
- } 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;
- }
- }
- }
-
- /* 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 */
- addr2 = (volatile CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[i]);
- if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
- info->protect[i] = 0;
- else
- info->protect[i] = addr2[CONFIG_SYS_FLASH_READ2] & 1;
- }
-
- /*
- * Prevent writes to uninitialized FLASH.
- */
- if (info->flash_id != FLASH_UNKNOWN) {
- addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)info->start[0];
- *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE)0x00F000F0; /* reset bank */
- }
-
- return (info->size);
-}
-
-
-/*-----------------------------------------------------------------------
- */
-
-int flash_erase (flash_info_t *info, int s_first, int s_last)
-{
- volatile CONFIG_SYS_FLASH_WORD_SIZE *addr = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[0]);
- volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2;
- int flag, prot, sect, l_sect;
- ulong start, now, last;
- int i;
-
- 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) {
- printf ("Can't erase unknown flash type - aborted\n");
- 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();
-
- /* Start erase on unprotected sectors */
- for (sect = s_first; sect<=s_last; sect++) {
- if (info->protect[sect] == 0) { /* not protected */
- addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[sect]);
- if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
- addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
- addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
- addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080;
- addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
- addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
- addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00500050; /* block erase */
- for (i=0; i<50; i++)
- udelay(1000); /* wait 1 ms */
- } else {
- if (sect == s_first) {
- addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
- addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
- addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080;
- addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
- addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
- }
- addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00300030; /* sector erase */
- }
- 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 = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[l_sect]);
- while ((addr[0] & (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) != (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) {
- if ((now = get_timer(start)) > CONFIG_SYS_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 */
- addr = (CONFIG_SYS_FLASH_WORD_SIZE *)info->start[0];
- addr[0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00F000F0; /* 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)
-{
- ulong cp, wp, data;
- int i, l, rc;
-
- wp = (addr & ~3); /* get lower word aligned address */
-
- /*
- * handle unaligned start bytes
- */
- if ((l = addr - wp) != 0) {
- data = 0;
- for (i=0, cp=wp; i<l; ++i, ++cp) {
-#ifdef CONFIG_B2
- data = data | ((*(uchar *)cp)<<(8*i));
-#else
- data = (data << 8) | (*(uchar *)cp);
-#endif
- }
- for (; i<4 && cnt>0; ++i) {
-#ifdef CONFIG_B2
- data = data | ((*src++)<<(8*i));
-#else
- data = (data << 8) | *src++;
-#endif
- --cnt;
- ++cp;
- }
- for (; cnt==0 && i<4; ++i, ++cp) {
-#ifdef CONFIG_B2
- data = data | ((*(uchar *)cp)<<(8*i));
-#else
- data = (data << 8) | (*(uchar *)cp);
-#endif
- }
-
- if ((rc = write_word(info, wp, data)) != 0) {
- return (rc);
- }
- wp += 4;
- }
-
- /*
- * handle word aligned part
- */
- while (cnt >= 4) {
- data = 0;
-#ifdef CONFIG_B2
- data = (*(ulong*)src);
- src += 4;
-#else
- for (i=0; i<4; ++i) {
- data = (data << 8) | *src++;
- }
-#endif
- if ((rc = write_word(info, wp, data)) != 0) {
- return (rc);
- }
- wp += 4;
- cnt -= 4;
- }
-
- if (cnt == 0) {
- return (0);
- }
-
- /*
- * handle unaligned tail bytes
- */
- data = 0;
- for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
-#ifdef CONFIG_B2
- data = data | ((*src++)<<(8*i));
-#else
- data = (data << 8) | *src++;
-#endif
- --cnt;
- }
- for (; i<4; ++i, ++cp) {
-#ifdef CONFIG_B2
- data = data | ((*(uchar *)cp)<<(8*i));
-#else
- data = (data << 8) | (*(uchar *)cp);
-#endif
- }
-
- return (write_word(info, wp, data));
-}
-
-/*-----------------------------------------------------------------------
- * 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)
-{
- ulong *data_ptr = &data;
- volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[0]);
- volatile CONFIG_SYS_FLASH_WORD_SIZE *dest2 = (CONFIG_SYS_FLASH_WORD_SIZE *)dest;
- volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 = (CONFIG_SYS_FLASH_WORD_SIZE *)data_ptr;
- ulong start;
- int flag;
- int i;
-
- /* Check if Flash is (sufficiently) erased */
- if ((*((volatile ulong *)dest) & data) != data) {
- return (2);
- }
- /* Disable interrupts which might cause a timeout here */
- flag = disable_interrupts();
-
- for (i=0; i<4/sizeof(CONFIG_SYS_FLASH_WORD_SIZE); i++)
- {
- addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
- addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
- addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00A000A0;
-
- dest2[i] = data2[i];
-
- /* re-enable interrupts if necessary */
- if (flag)
- enable_interrupts();
-
- /* data polling for D7 */
- start = get_timer (0);
- while ((dest2[i] & (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) !=
- (data2[i] & (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080)) {
- if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
- return (1);
- }
- }
- }
-
- return (0);
-}
-
-/*-----------------------------------------------------------------------
- */
--
========================================================================
Robert P. J. Day Ottawa, Ontario, CANADA
http://crashcourse.ca
Twitter: http://twitter.com/rpjday
LinkedIn: http://ca.linkedin.com/in/rpjday
========================================================================
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