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@@ -42,250 +42,265 @@ flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
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*/
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void flash_reset(void)
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{
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- if( flash_info[0].flash_id != FLASH_UNKNOWN ) {
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- V_ULONG( flash_info[0].start[0] ) = 0x00F000F0;
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- V_ULONG( flash_info[0].start[0] + 4 ) = 0x00F000F0;
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- }
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+ if( flash_info[0].flash_id != FLASH_UNKNOWN ) {
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+ V_ULONG( flash_info[0].start[0] ) = 0x00F000F0;
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+ V_ULONG( flash_info[0].start[0] + 4 ) = 0x00F000F0;
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+ }
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}
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/*-----------------------------------------------------------------------
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*/
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ulong flash_get_size( ulong baseaddr, flash_info_t *info )
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{
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- short i;
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- unsigned long flashtest_h, flashtest_l;
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-
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- /* Write auto select command sequence and test FLASH answer */
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- V_ULONG(baseaddr + ((ulong)0x0555 << 3)) = 0x00AA00AA;
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- V_ULONG(baseaddr + ((ulong)0x02AA << 3)) = 0x00550055;
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- V_ULONG(baseaddr + ((ulong)0x0555 << 3)) = 0x00900090;
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- V_ULONG(baseaddr + 4 + ((ulong)0x0555 << 3)) = 0x00AA00AA;
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- V_ULONG(baseaddr + 4 + ((ulong)0x02AA << 3)) = 0x00550055;
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- V_ULONG(baseaddr + 4 + ((ulong)0x0555 << 3)) = 0x00900090;
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-
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- flashtest_h = V_ULONG(baseaddr); /* manufacturer ID */
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- flashtest_l = V_ULONG(baseaddr + 4);
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-
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- if ((int)flashtest_h == AMD_MANUFACT) {
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- info->flash_id = FLASH_MAN_AMD;
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- } else {
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- info->flash_id = FLASH_UNKNOWN;
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- info->sector_count = 0;
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- info->size = 0;
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- return (0); /* no or unknown flash */
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- }
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-
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- flashtest_h = V_ULONG(baseaddr + 8); /* device ID */
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- flashtest_l = V_ULONG(baseaddr + 12);
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- if (flashtest_h != flashtest_l) {
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- info->flash_id = FLASH_UNKNOWN;
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- return(0);
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- }
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- if (flashtest_h == AMD_ID_DL323B) {
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- info->flash_id += FLASH_AMDL323B;
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- info->sector_count = 71;
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- info->size = 0x01000000; /* 4 * 4 MB = 16 MB */
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- } else {
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- info->flash_id = FLASH_UNKNOWN;
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- return(0); /* no or unknown flash */
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- }
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-
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- /* set up sector start adress table (bottom sector type) */
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- for (i = 0; i < 8; i++) {
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- info->start[i] = baseaddr + (i * 0x00008000);
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- }
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- for (i = 8; i < info->sector_count; i++) {
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- info->start[i] = baseaddr + (i * 0x00040000) - 0x001C0000;
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- }
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-
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- /* check for protected sectors */
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- for (i = 0; i < info->sector_count; i++) {
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- /* read sector protection at sector address, (A7 .. A0) = 0x02 */
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- if ((V_ULONG( info->start[i] + 16 ) & 0x00010001) ||
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- (V_ULONG( info->start[i] + 20 ) & 0x00010001)) {
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- info->protect[i] = 1; /* D0 = 1 if protected */
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- } else {
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- info->protect[i] = 0;
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- }
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- }
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-
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- flash_reset();
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- return(info->size);
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+ short i;
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+ unsigned long flashtest_h, flashtest_l;
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+
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+ /* Write auto select command sequence and test FLASH answer */
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+ V_ULONG(baseaddr + ((ulong)0x0555 << 3)) = 0x00AA00AA;
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+ V_ULONG(baseaddr + ((ulong)0x02AA << 3)) = 0x00550055;
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+ V_ULONG(baseaddr + ((ulong)0x0555 << 3)) = 0x00900090;
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+ V_ULONG(baseaddr + 4 + ((ulong)0x0555 << 3)) = 0x00AA00AA;
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+ V_ULONG(baseaddr + 4 + ((ulong)0x02AA << 3)) = 0x00550055;
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+ V_ULONG(baseaddr + 4 + ((ulong)0x0555 << 3)) = 0x00900090;
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+
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+ flashtest_h = V_ULONG(baseaddr); /* manufacturer ID */
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+ flashtest_l = V_ULONG(baseaddr + 4);
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+
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+ if ((int)flashtest_h == AMD_MANUFACT) {
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+ info->flash_id = FLASH_MAN_AMD;
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+ } else {
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+ info->flash_id = FLASH_UNKNOWN;
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+ info->sector_count = 0;
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+ info->size = 0;
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+ return (0); /* no or unknown flash */
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+ }
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+
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+ flashtest_h = V_ULONG(baseaddr + 8); /* device ID */
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+ flashtest_l = V_ULONG(baseaddr + 12);
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+ if (flashtest_h != flashtest_l) {
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+ info->flash_id = FLASH_UNKNOWN;
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+ return(0);
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+ }
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+
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+ switch((int)flashtest_h) {
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+ case AMD_ID_DL323B:
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+ info->flash_id += FLASH_AMDL323B;
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+ info->sector_count = 71;
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+ info->size = 0x01000000; /* 4 * 4 MB = 16 MB */
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+ break;
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+ case AMD_ID_LV640U: /* AMDLV640 and AMDLV641 have same ID */
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+ info->flash_id += FLASH_AMLV640U;
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+ info->sector_count = 128;
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+ info->size = 0x02000000; /* 4 * 8 MB = 32 MB */
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+ break;
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+ default:
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+ info->flash_id = FLASH_UNKNOWN;
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+ return(0); /* no or unknown flash */
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+ }
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+
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+ if(flashtest_h == AMD_ID_LV640U) {
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+ /* set up sector start adress table (uniform sector type) */
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+ for (i = 0; i < info->sector_count; i++)
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+ info->start[i] = baseaddr + (i * 0x00040000);
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+ } else {
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+ /* set up sector start adress table (bottom sector type) */
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+ for (i = 0; i < 8; i++) {
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+ info->start[i] = baseaddr + (i * 0x00008000);
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+ }
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+ for (i = 8; i < info->sector_count; i++) {
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+ info->start[i] = baseaddr + (i * 0x00040000) - 0x001C0000;
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+ }
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+ }
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+ /* check for protected sectors */
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+ for (i = 0; i < info->sector_count; i++) {
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+ /* read sector protection at sector address, (A7 .. A0) = 0x02 */
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+ if ((V_ULONG( info->start[i] + 16 ) & 0x00010001) ||
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+ (V_ULONG( info->start[i] + 20 ) & 0x00010001)) {
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+ info->protect[i] = 1; /* D0 = 1 if protected */
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+ } else {
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+ info->protect[i] = 0;
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+ }
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+ }
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+
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+ flash_reset();
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+ return(info->size);
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}
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/*-----------------------------------------------------------------------
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*/
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unsigned long flash_init (void)
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{
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- unsigned long size_b0 = 0;
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- int i;
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+ unsigned long size_b0 = 0;
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+ int i;
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- /* Init: no FLASHes known */
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- for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) {
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- flash_info[i].flash_id = FLASH_UNKNOWN;
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- }
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+ /* Init: no FLASHes known */
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+ for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) {
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+ flash_info[i].flash_id = FLASH_UNKNOWN;
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+ }
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- /* Static FLASH Bank configuration here (only one bank) */
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+ /* Static FLASH Bank configuration here (only one bank) */
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- size_b0 = flash_get_size(CFG_FLASH0_BASE, &flash_info[0]);
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- if (flash_info[0].flash_id == FLASH_UNKNOWN || size_b0 == 0) {
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- printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
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- size_b0, size_b0>>20);
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- }
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+ size_b0 = flash_get_size(CFG_FLASH0_BASE, &flash_info[0]);
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+ if (flash_info[0].flash_id == FLASH_UNKNOWN || size_b0 == 0) {
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+ printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
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+ size_b0, size_b0>>20);
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+ }
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- /*
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- * protect monitor and environment sectors
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- */
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+ /*
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+ * protect monitor and environment sectors
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+ */
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#if CFG_MONITOR_BASE >= CFG_FLASH0_BASE
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- flash_protect(FLAG_PROTECT_SET,
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- CFG_MONITOR_BASE,
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- CFG_MONITOR_BASE+monitor_flash_len-1,
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- &flash_info[0]);
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+ flash_protect(FLAG_PROTECT_SET,
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+ CFG_MONITOR_BASE,
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+ CFG_MONITOR_BASE+monitor_flash_len-1,
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+ &flash_info[0]);
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#endif
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#if (CFG_ENV_IS_IN_FLASH == 1) && defined(CFG_ENV_ADDR)
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# ifndef CFG_ENV_SIZE
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# define CFG_ENV_SIZE CFG_ENV_SECT_SIZE
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# endif
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- flash_protect(FLAG_PROTECT_SET,
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- CFG_ENV_ADDR,
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- CFG_ENV_ADDR + CFG_ENV_SIZE - 1,
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- &flash_info[0]);
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+ flash_protect(FLAG_PROTECT_SET,
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+ CFG_ENV_ADDR,
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+ CFG_ENV_ADDR + CFG_ENV_SIZE - 1,
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+ &flash_info[0]);
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#endif
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- return (size_b0);
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+ return (size_b0);
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}
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/*-----------------------------------------------------------------------
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*/
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void flash_print_info (flash_info_t *info)
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{
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- int i;
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+ int i;
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- if (info->flash_id == FLASH_UNKNOWN) {
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- printf ("missing or unknown FLASH type\n");
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- return;
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- }
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+ if (info->flash_id == FLASH_UNKNOWN) {
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+ printf ("missing or unknown FLASH type\n");
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+ return;
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+ }
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- switch ((info->flash_id >> 16) & 0xff) {
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- case FLASH_MAN_AMD: printf ("AMD "); break;
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- default: printf ("Unknown Vendor "); break;
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- }
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+ switch ((info->flash_id >> 16) & 0xff) {
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+ case FLASH_MAN_AMD: printf ("AMD "); break;
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+ default: printf ("Unknown Vendor "); break;
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+ }
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- switch (info->flash_id & FLASH_TYPEMASK) {
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- case FLASH_AMDL323B: printf ("29DL323B (32 M, bottom sector)\n");
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+ switch (info->flash_id & FLASH_TYPEMASK) {
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+ case FLASH_AMDL323B: printf ("29DL323B (32 M, bottom sector)\n");
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break;
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- default: printf ("Unknown Chip Type\n");
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+ case FLASH_AMLV640U: printf ("29LV640U (64 M, uniform sector)\n");
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break;
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- }
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-
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- printf (" Size: %ld MB in %d Sectors\n",
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- info->size >> 20, info->sector_count);
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-
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- printf (" Sector Start Addresses:");
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- for (i=0; i<info->sector_count; ++i) {
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- if ((i % 5) == 0)
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- printf ("\n ");
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- printf (" %08lX%s",
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- info->start[i],
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- info->protect[i] ? " (RO)" : " "
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- );
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- }
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- printf ("\n");
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- return;
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+ default: printf ("Unknown Chip Type\n");
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+ break;
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+ }
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+
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+ printf (" Size: %ld MB in %d Sectors\n",
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+ info->size >> 20, info->sector_count);
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+
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+ printf (" Sector Start Addresses:");
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+ for (i=0; i<info->sector_count; ++i) {
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+ if ((i % 5) == 0)
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+ printf ("\n ");
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+ printf (" %08lX%s",
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+ info->start[i],
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+ info->protect[i] ? " (RO)" : " "
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+ );
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+ }
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+ printf ("\n");
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+ return;
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}
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/*-----------------------------------------------------------------------
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*/
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int flash_erase (flash_info_t *info, int s_first, int s_last)
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{
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- int flag, prot, sect, l_sect;
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- ulong start, now, last;
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+ int flag, prot, sect, l_sect;
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+ ulong start, now, last;
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+
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+ if ((s_first < 0) || (s_first > s_last)) {
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+ if (info->flash_id == FLASH_UNKNOWN) {
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+ printf ("- missing\n");
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+ } else {
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+ printf ("- no sectors to erase\n");
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+ }
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+ return 1;
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+ }
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- if ((s_first < 0) || (s_first > s_last)) {
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- if (info->flash_id == FLASH_UNKNOWN) {
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- printf ("- missing\n");
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- } else {
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- printf ("- no sectors to erase\n");
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+ prot = 0;
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+ for (sect = s_first; sect <= s_last; sect++) {
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+ if (info->protect[sect])
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+ prot++;
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}
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- return 1;
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- }
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-
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- prot = 0;
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- for (sect = s_first; sect <= s_last; sect++) {
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- if (info->protect[sect])
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- prot++;
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- }
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-
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- if (prot) {
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- printf ("- Warning: %d protected sectors will not be erased!\n",
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- prot);
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- } else {
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- printf ("\n");
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- }
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-
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- l_sect = -1;
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-
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- /* Disable interrupts which might cause a timeout here */
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- flag = disable_interrupts();
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-
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- V_ULONG( info->start[0] + (0x0555 << 3) ) = 0x00AA00AA;
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- V_ULONG( info->start[0] + (0x02AA << 3) ) = 0x00550055;
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- V_ULONG( info->start[0] + (0x0555 << 3) ) = 0x00800080;
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- V_ULONG( info->start[0] + (0x0555 << 3) ) = 0x00AA00AA;
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- V_ULONG( info->start[0] + (0x02AA << 3) ) = 0x00550055;
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- V_ULONG( info->start[0] + 4 + (0x0555 << 3) ) = 0x00AA00AA;
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- V_ULONG( info->start[0] + 4 + (0x02AA << 3) ) = 0x00550055;
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- V_ULONG( info->start[0] + 4 + (0x0555 << 3) ) = 0x00800080;
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- V_ULONG( info->start[0] + 4 + (0x0555 << 3) ) = 0x00AA00AA;
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- V_ULONG( info->start[0] + 4 + (0x02AA << 3) ) = 0x00550055;
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- udelay (1000);
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-
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- /* Start erase on unprotected sectors */
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- for (sect = s_first; sect<=s_last; sect++) {
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- if (info->protect[sect] == 0) { /* not protected */
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- V_ULONG( info->start[sect] ) = 0x00300030;
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- V_ULONG( info->start[sect] + 4 ) = 0x00300030;
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- l_sect = sect;
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+
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+ if (prot) {
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+ printf ("- Warning: %d protected sectors will not be erased!\n",
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+ prot);
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+ } else {
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+ printf ("\n");
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}
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- }
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-
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- /* re-enable interrupts if necessary */
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- if (flag)
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- enable_interrupts();
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-
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- /* wait at least 80us - let's wait 1 ms */
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- udelay (1000);
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-
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- /*
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- * We wait for the last triggered sector
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- */
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- if (l_sect < 0)
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- goto DONE;
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-
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- start = get_timer (0);
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- last = start;
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- while ((V_ULONG( info->start[l_sect] ) & 0x00800080) != 0x00800080 ||
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- (V_ULONG( info->start[l_sect] + 4 ) & 0x00800080) != 0x00800080)
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- {
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- if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
|
|
|
- printf ("Timeout\n");
|
|
|
- return 1;
|
|
|
+
|
|
|
+ l_sect = -1;
|
|
|
+
|
|
|
+ /* Disable interrupts which might cause a timeout here */
|
|
|
+ flag = disable_interrupts();
|
|
|
+
|
|
|
+ V_ULONG( info->start[0] + (0x0555 << 3) ) = 0x00AA00AA;
|
|
|
+ V_ULONG( info->start[0] + (0x02AA << 3) ) = 0x00550055;
|
|
|
+ V_ULONG( info->start[0] + (0x0555 << 3) ) = 0x00800080;
|
|
|
+ V_ULONG( info->start[0] + (0x0555 << 3) ) = 0x00AA00AA;
|
|
|
+ V_ULONG( info->start[0] + (0x02AA << 3) ) = 0x00550055;
|
|
|
+ V_ULONG( info->start[0] + 4 + (0x0555 << 3) ) = 0x00AA00AA;
|
|
|
+ V_ULONG( info->start[0] + 4 + (0x02AA << 3) ) = 0x00550055;
|
|
|
+ V_ULONG( info->start[0] + 4 + (0x0555 << 3) ) = 0x00800080;
|
|
|
+ V_ULONG( info->start[0] + 4 + (0x0555 << 3) ) = 0x00AA00AA;
|
|
|
+ V_ULONG( info->start[0] + 4 + (0x02AA << 3) ) = 0x00550055;
|
|
|
+ udelay (1000);
|
|
|
+
|
|
|
+ /* Start erase on unprotected sectors */
|
|
|
+ for (sect = s_first; sect<=s_last; sect++) {
|
|
|
+ if (info->protect[sect] == 0) { /* not protected */
|
|
|
+ V_ULONG( info->start[sect] ) = 0x00300030;
|
|
|
+ V_ULONG( info->start[sect] + 4 ) = 0x00300030;
|
|
|
+ l_sect = sect;
|
|
|
+ }
|
|
|
}
|
|
|
- /* show that we're waiting */
|
|
|
- if ((now - last) > 1000) { /* every second */
|
|
|
- serial_putc ('.');
|
|
|
- last = now;
|
|
|
+
|
|
|
+ /* 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;
|
|
|
+ while ((V_ULONG( info->start[l_sect] ) & 0x00800080) != 0x00800080 ||
|
|
|
+ (V_ULONG( info->start[l_sect] + 4 ) & 0x00800080) != 0x00800080)
|
|
|
+ {
|
|
|
+ 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 */
|
|
|
+ serial_putc ('.');
|
|
|
+ last = now;
|
|
|
+ }
|
|
|
}
|
|
|
- }
|
|
|
|
|
|
- DONE:
|
|
|
- /* reset to read mode */
|
|
|
- flash_reset ();
|
|
|
+ DONE:
|
|
|
+ /* reset to read mode */
|
|
|
+ flash_reset ();
|
|
|
|
|
|
- printf (" done\n");
|
|
|
- return 0;
|
|
|
+ printf (" done\n");
|
|
|
+ return 0;
|
|
|
}
|
|
|
|
|
|
static int write_dword (flash_info_t *, ulong, unsigned char *);
|
|
@@ -299,49 +314,49 @@ static int write_dword (flash_info_t *, ulong, unsigned char *);
|
|
|
|
|
|
int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
|
|
|
{
|
|
|
- ulong dp;
|
|
|
- static unsigned char bb[8];
|
|
|
- int i, l, rc, cc = cnt;
|
|
|
-
|
|
|
- dp = (addr & ~7); /* get lower dword aligned address */
|
|
|
-
|
|
|
- /*
|
|
|
- * handle unaligned start bytes
|
|
|
- */
|
|
|
- if ((l = addr - dp) != 0) {
|
|
|
- for (i = 0; i < 8; i++)
|
|
|
- bb[i] = (i < l || (i-l) >= cc) ? V_BYTE(dp+i) : *src++;
|
|
|
- if ((rc = write_dword(info, dp, bb)) != 0)
|
|
|
- {
|
|
|
- return (rc);
|
|
|
+ ulong dp;
|
|
|
+ static unsigned char bb[8];
|
|
|
+ int i, l, rc, cc = cnt;
|
|
|
+
|
|
|
+ dp = (addr & ~7); /* get lower dword aligned address */
|
|
|
+
|
|
|
+ /*
|
|
|
+ * handle unaligned start bytes
|
|
|
+ */
|
|
|
+ if ((l = addr - dp) != 0) {
|
|
|
+ for (i = 0; i < 8; i++)
|
|
|
+ bb[i] = (i < l || (i-l) >= cc) ? V_BYTE(dp+i) : *src++;
|
|
|
+ if ((rc = write_dword(info, dp, bb)) != 0)
|
|
|
+ {
|
|
|
+ return (rc);
|
|
|
+ }
|
|
|
+ dp += 8;
|
|
|
+ cc -= 8 - l;
|
|
|
+ }
|
|
|
+
|
|
|
+ /*
|
|
|
+ * handle word aligned part
|
|
|
+ */
|
|
|
+ while (cc >= 8) {
|
|
|
+ if ((rc = write_dword(info, dp, src)) != 0) {
|
|
|
+ return (rc);
|
|
|
+ }
|
|
|
+ dp += 8;
|
|
|
+ src += 8;
|
|
|
+ cc -= 8;
|
|
|
}
|
|
|
- dp += 8;
|
|
|
- cc -= 8 - l;
|
|
|
- }
|
|
|
-
|
|
|
- /*
|
|
|
- * handle word aligned part
|
|
|
- */
|
|
|
- while (cc >= 8) {
|
|
|
- if ((rc = write_dword(info, dp, src)) != 0) {
|
|
|
- return (rc);
|
|
|
+
|
|
|
+ if (cc <= 0) {
|
|
|
+ return (0);
|
|
|
}
|
|
|
- dp += 8;
|
|
|
- src += 8;
|
|
|
- cc -= 8;
|
|
|
- }
|
|
|
|
|
|
- if (cc <= 0) {
|
|
|
- return (0);
|
|
|
- }
|
|
|
-
|
|
|
- /*
|
|
|
- * handle unaligned tail bytes
|
|
|
- */
|
|
|
- for (i = 0; i < 8; i++) {
|
|
|
- bb[i] = (i < cc) ? *src++ : V_BYTE(dp+i);
|
|
|
- }
|
|
|
- return (write_dword(info, dp, bb));
|
|
|
+ /*
|
|
|
+ * handle unaligned tail bytes
|
|
|
+ */
|
|
|
+ for (i = 0; i < 8; i++) {
|
|
|
+ bb[i] = (i < cc) ? *src++ : V_BYTE(dp+i);
|
|
|
+ }
|
|
|
+ return (write_dword(info, dp, bb));
|
|
|
}
|
|
|
|
|
|
/*-----------------------------------------------------------------------
|
|
@@ -352,45 +367,45 @@ int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
|
|
|
*/
|
|
|
static int write_dword (flash_info_t *info, ulong dest, unsigned char * pdata)
|
|
|
{
|
|
|
- ulong start;
|
|
|
- ulong cl = 0, ch =0;
|
|
|
- int flag, i;
|
|
|
-
|
|
|
- for (ch=0, i=0; i < 4; i++)
|
|
|
- ch = (ch << 8) + *pdata++; /* high word */
|
|
|
- for (cl=0, i=0; i < 4; i++)
|
|
|
- cl = (cl << 8) + *pdata++; /* low word */
|
|
|
-
|
|
|
- /* Check if Flash is (sufficiently) erased */
|
|
|
- if ((*((vu_long *)dest) & ch) != ch
|
|
|
- ||(*((vu_long *)(dest + 4)) & cl) != cl)
|
|
|
- {
|
|
|
- return (2);
|
|
|
- }
|
|
|
-
|
|
|
- /* Disable interrupts which might cause a timeout here */
|
|
|
- flag = disable_interrupts();
|
|
|
-
|
|
|
- V_ULONG( info->start[0] + (0x0555 << 3) ) = 0x00AA00AA;
|
|
|
- V_ULONG( info->start[0] + (0x02AA << 3) ) = 0x00550055;
|
|
|
- V_ULONG( info->start[0] + (0x0555 << 3) ) = 0x00A000A0;
|
|
|
- V_ULONG( dest ) = ch;
|
|
|
- V_ULONG( info->start[0] + 4 + (0x0555 << 3) ) = 0x00AA00AA;
|
|
|
- V_ULONG( info->start[0] + 4 + (0x02AA << 3) ) = 0x00550055;
|
|
|
- V_ULONG( info->start[0] + 4 + (0x0555 << 3) ) = 0x00A000A0;
|
|
|
- V_ULONG( dest + 4 ) = cl;
|
|
|
-
|
|
|
- /* re-enable interrupts if necessary */
|
|
|
- if (flag)
|
|
|
- enable_interrupts();
|
|
|
-
|
|
|
- /* data polling for D7 */
|
|
|
- start = get_timer (0);
|
|
|
- while (((V_ULONG( dest ) & 0x00800080) != (ch & 0x00800080)) ||
|
|
|
- ((V_ULONG( dest + 4 ) & 0x00800080) != (cl & 0x00800080))) {
|
|
|
- if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
|
|
|
- return (1);
|
|
|
+ ulong start;
|
|
|
+ ulong cl = 0, ch =0;
|
|
|
+ int flag, i;
|
|
|
+
|
|
|
+ for (ch=0, i=0; i < 4; i++)
|
|
|
+ ch = (ch << 8) + *pdata++; /* high word */
|
|
|
+ for (cl=0, i=0; i < 4; i++)
|
|
|
+ cl = (cl << 8) + *pdata++; /* low word */
|
|
|
+
|
|
|
+ /* Check if Flash is (sufficiently) erased */
|
|
|
+ if ((*((vu_long *)dest) & ch) != ch
|
|
|
+ ||(*((vu_long *)(dest + 4)) & cl) != cl)
|
|
|
+ {
|
|
|
+ return (2);
|
|
|
}
|
|
|
- }
|
|
|
- return (0);
|
|
|
+
|
|
|
+ /* Disable interrupts which might cause a timeout here */
|
|
|
+ flag = disable_interrupts();
|
|
|
+
|
|
|
+ V_ULONG( info->start[0] + (0x0555 << 3) ) = 0x00AA00AA;
|
|
|
+ V_ULONG( info->start[0] + (0x02AA << 3) ) = 0x00550055;
|
|
|
+ V_ULONG( info->start[0] + (0x0555 << 3) ) = 0x00A000A0;
|
|
|
+ V_ULONG( dest ) = ch;
|
|
|
+ V_ULONG( info->start[0] + 4 + (0x0555 << 3) ) = 0x00AA00AA;
|
|
|
+ V_ULONG( info->start[0] + 4 + (0x02AA << 3) ) = 0x00550055;
|
|
|
+ V_ULONG( info->start[0] + 4 + (0x0555 << 3) ) = 0x00A000A0;
|
|
|
+ V_ULONG( dest + 4 ) = cl;
|
|
|
+
|
|
|
+ /* re-enable interrupts if necessary */
|
|
|
+ if (flag)
|
|
|
+ enable_interrupts();
|
|
|
+
|
|
|
+ /* data polling for D7 */
|
|
|
+ start = get_timer (0);
|
|
|
+ while (((V_ULONG( dest ) & 0x00800080) != (ch & 0x00800080)) ||
|
|
|
+ ((V_ULONG( dest + 4 ) & 0x00800080) != (cl & 0x00800080))) {
|
|
|
+ if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
|
|
|
+ return (1);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return (0);
|
|
|
}
|