#include <watchdog.h>
-flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
+/* info for FLASH chips */
+flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
-/*-----------------------------------------------------------------------
+/*
* Functions
*/
-static ulong flash_get_size (vu_long *addr, flash_info_t *info);
+static ulong flash_get_size(vu_long *addr, flash_info_t *info);
static int write_word8(flash_info_t *info, ulong dest, ulong data);
-static int write_word32 (flash_info_t *info, ulong dest, ulong data);
-static void flash_get_offsets (ulong base, flash_info_t *info);
-
-/*-----------------------------------------------------------------------
- */
+static int write_word32(flash_info_t *info, ulong dest, ulong data);
+static void flash_get_offsets(ulong base, flash_info_t *info);
-unsigned long flash_init (void)
+unsigned long flash_init(void)
{
- int i;
- unsigned long size_b0, base_b0;
- unsigned long size_b1, base_b1;
-
- /* Init: no FLASHes known */
- for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
- flash_info[i].flash_id = FLASH_UNKNOWN;
- }
-
- /* Get Size of Boot and Main Flashes */
- 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);
- return 0;
- }
- size_b1 = flash_get_size((vu_long *)FLASH_BASE1_PRELIM, &flash_info[1]);
- if (flash_info[1].flash_id == FLASH_UNKNOWN) {
- printf ("## Unknown FLASH on Bank 1 - Size = 0x%08lx = %ld MB\n",
- size_b1, size_b1<<20);
- return 0;
- }
-
- /* Calculate base addresses */
- base_b0 = -size_b0;
- base_b1 = -size_b1;
+ int i;
+ unsigned long size_b0, base_b0;
+ unsigned long size_b1, base_b1;
+
+ /* Init: no FLASHes known */
+ for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i)
+ flash_info[i].flash_id = FLASH_UNKNOWN;
+
+ /* Get Size of Boot and Main Flashes */
+ 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);
+ return 0;
+ }
+ size_b1 =
+ flash_get_size((vu_long *) FLASH_BASE1_PRELIM,
+ &flash_info[1]);
+ if (flash_info[1].flash_id == FLASH_UNKNOWN) {
+ printf("## Unknown FLASH on Bank 1 - Size = 0x%08lx = %ld MB\n",
+ size_b1, size_b1 << 20);
+ return 0;
+ }
- /* Setup offsets for Boot Flash */
- flash_get_offsets (base_b0, &flash_info[0]);
+ /* Calculate base addresses */
+ base_b0 = -size_b0;
+ base_b1 = -size_b1;
- /* Protect board level data */
- (void)flash_protect(FLAG_PROTECT_SET,
- base_b0,
- flash_info[0].start[1] - 1,
- &flash_info[0]);
+ /* Setup offsets for Boot Flash */
+ flash_get_offsets(base_b0, &flash_info[0]);
+ /* Protect board level data */
+ (void) flash_protect(FLAG_PROTECT_SET,
+ base_b0,
+ flash_info[0].start[1] - 1, &flash_info[0]);
- /* Monitor protection ON by default */
- (void)flash_protect(FLAG_PROTECT_SET,
- base_b0 + size_b0 - monitor_flash_len,
- base_b0 + size_b0 - 1,
- &flash_info[0]);
+ /* Monitor protection ON by default */
+ (void) flash_protect(FLAG_PROTECT_SET,
+ base_b0 + size_b0 - monitor_flash_len,
+ base_b0 + size_b0 - 1, &flash_info[0]);
- /* Protect the FPGA image */
- (void)flash_protect(FLAG_PROTECT_SET,
- FLASH_BASE1_PRELIM,
- FLASH_BASE1_PRELIM + CONFIG_SYS_FPGA_IMAGE_LEN - 1,
- &flash_info[1]);
+ /* Protect the FPGA image */
+ (void) flash_protect(FLAG_PROTECT_SET,
+ FLASH_BASE1_PRELIM,
+ FLASH_BASE1_PRELIM + CONFIG_SYS_FPGA_IMAGE_LEN -
+ 1, &flash_info[1]);
- /* Protect the default boot image */
- (void)flash_protect(FLAG_PROTECT_SET,
- FLASH_BASE1_PRELIM + CONFIG_SYS_FPGA_IMAGE_LEN,
- FLASH_BASE1_PRELIM + CONFIG_SYS_FPGA_IMAGE_LEN + 0x600000 - 1,
- &flash_info[1]);
+ /* Protect the default boot image */
+ (void) flash_protect(FLAG_PROTECT_SET,
+ FLASH_BASE1_PRELIM + CONFIG_SYS_FPGA_IMAGE_LEN,
+ FLASH_BASE1_PRELIM + CONFIG_SYS_FPGA_IMAGE_LEN +
+ 0x600000 - 1, &flash_info[1]);
- /* Setup offsets for Main Flash */
- flash_get_offsets (FLASH_BASE1_PRELIM, &flash_info[1]);
+ /* Setup offsets for Main Flash */
+ flash_get_offsets(FLASH_BASE1_PRELIM, &flash_info[1]);
- return (size_b0 + size_b1);
-} /* end flash_init() */
+ return size_b0 + size_b1;
+}
-/*-----------------------------------------------------------------------
- */
-static void flash_get_offsets (ulong base, flash_info_t *info)
+static void flash_get_offsets(ulong base, flash_info_t *info)
{
- int i;
+ int i;
- /* set up sector start address table - FOR BOOT ROM ONLY!!! */
- if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) {
- for (i = 0; i < info->sector_count; i++)
- info->start[i] = base + (i * 0x00010000);
- }
-} /* end flash_get_offsets() */
+ /* set up sector start address table - FOR BOOT ROM ONLY!!! */
+ if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) {
+ for (i = 0; i < info->sector_count; i++)
+ info->start[i] = base + (i * 0x00010000);
+ }
+} /* end flash_get_offsets() */
-/*-----------------------------------------------------------------------
- */
-void flash_print_info (flash_info_t *info)
+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 ("1 x AMD "); break;
- case FLASH_MAN_STM: printf ("1 x STM "); break;
- case FLASH_MAN_INTEL: printf ("2 x Intel "); break;
- default: printf ("Unknown Vendor ");
- }
-
- switch (info->flash_id & FLASH_TYPEMASK) {
+ 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("1 x AMD ");
+ break;
+ case FLASH_MAN_STM:
+ printf("1 x STM ");
+ break;
+ case FLASH_MAN_INTEL:
+ printf("2 x Intel ");
+ break;
+ default:
+ printf("Unknown Vendor ");
+ }
+
+ switch (info->flash_id & FLASH_TYPEMASK) {
case FLASH_AM040:
- if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_AMD)
- printf ("AM29LV040 (4096 Kbit, uniform sector size)\n");
- else if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_STM)
- printf ("M29W040B (4096 Kbit, uniform block size)\n");
- else
- printf ("UNKNOWN 29x040x (4096 Kbit, uniform sector size)\n");
- break;
+ if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_AMD)
+ printf("AM29LV040 (4096 Kbit, uniform sector size)\n");
+ else if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_STM)
+ printf("M29W040B (4096 Kbit, uniform block size)\n");
+ else
+ printf("UNKNOWN 29x040x (4096 Kbit, uniform sector size)\n");
+ break;
case FLASH_28F320J3A:
- printf ("28F320J3A (32 Mbit = 128K x 32)\n");
- break;
+ printf("28F320J3A (32 Mbit = 128K x 32)\n");
+ break;
case FLASH_28F640J3A:
- printf ("28F640J3A (64 Mbit = 128K x 64)\n");
- break;
+ printf("28F640J3A (64 Mbit = 128K x 64)\n");
+ break;
case FLASH_28F128J3A:
- printf ("28F128J3A (128 Mbit = 128K x 128)\n");
- break;
- default:
- printf ("Unknown Chip Type\n");
- }
-
- if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_STM) {
- printf (" Size: %ld KB in %d Blocks\n",
- info->size >> 10, info->sector_count);
- } else {
- printf (" Size: %ld KB in %d Sectors\n",
- info->size >> 10, info->sector_count);
- }
-
- printf (" Sector Start Addresses:");
- for (i=0; i<info->sector_count; ++i) {
- /*
- * 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;
+ printf("28F128J3A (128 Mbit = 128K x 128)\n");
break;
- }
+ default:
+ printf("Unknown Chip Type\n");
+ }
+
+ if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_STM) {
+ printf(" Size: %ld KB in %d Blocks\n",
+ info->size >> 10, info->sector_count);
+ } else {
+ printf(" Size: %ld KB in %d Sectors\n",
+ info->size >> 10, info->sector_count);
}
- if ((i % 5) == 0)
- printf ("\n ");
- printf (" %08lX%s%s",
- info->start[i],
- erased ? " E" : " ",
- info->protect[i] ? "RO " : " "
- );
- }
- printf ("\n");
-} /* end flash_print_info() */
+ printf(" Sector Start Addresses:");
+ for (i = 0; i < info->sector_count; ++i) {
+ /*
+ * 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 ");
+ printf(" %08lX%s%s",
+ info->start[i],
+ erased ? " E" : " ",
+ info->protect[i] ? "RO " : " ");
+ }
+ printf("\n");
+} /* end flash_print_info() */
/*
* The following code cannot be run from FLASH!
*/
-static ulong flash_get_size (vu_long *addr, flash_info_t *info)
+static ulong flash_get_size(vu_long *addr, flash_info_t *info)
{
- short i;
- ulong base = (ulong)addr;
-
- /* Setup default type */
- info->flash_id = FLASH_UNKNOWN;
- info->sector_count =0;
- info->size = 0;
-
- /* Test for Boot Flash */
- if (base == FLASH_BASE0_PRELIM) {
- unsigned char value;
- volatile unsigned char * addr2 = (unsigned char *)addr;
-
- /* Write auto select command: read Manufacturer ID */
- *(addr2 + 0x555) = 0xaa;
- *(addr2 + 0x2aa) = 0x55;
- *(addr2 + 0x555) = 0x90;
-
- /* Manufacture ID */
- value = *addr2;
- switch (value) {
- case (unsigned char)AMD_MANUFACT:
- info->flash_id = FLASH_MAN_AMD;
- break;
- case (unsigned char)STM_MANUFACT:
- info->flash_id = FLASH_MAN_STM;
- break;
- default:
- *addr2 = 0xf0; /* no or unknown flash */
- return 0;
- }
+ short i;
+ ulong base = (ulong) addr;
+
+ /* Setup default type */
+ info->flash_id = FLASH_UNKNOWN;
+ info->sector_count = 0;
+ info->size = 0;
+
+ /* Test for Boot Flash */
+ if (base == FLASH_BASE0_PRELIM) {
+ unsigned char value;
+ volatile unsigned char *addr2 = (unsigned char *) addr;
+
+ /* Write auto select command: read Manufacturer ID */
+ *(addr2 + 0x555) = 0xaa;
+ *(addr2 + 0x2aa) = 0x55;
+ *(addr2 + 0x555) = 0x90;
+
+ /* Manufacture ID */
+ value = *addr2;
+ switch (value) {
+ case (unsigned char) AMD_MANUFACT:
+ info->flash_id = FLASH_MAN_AMD;
+ break;
+ case (unsigned char) STM_MANUFACT:
+ info->flash_id = FLASH_MAN_STM;
+ break;
+ default:
+ *addr2 = 0xf0; /* no or unknown flash */
+ return 0;
+ }
- /* Device ID */
- value = *(addr2 + 1);
- switch (value) {
- case (unsigned char)AMD_ID_LV040B:
- case (unsigned char)STM_ID_29W040B:
- info->flash_id += FLASH_AM040;
- info->sector_count = 8;
- info->size = 0x00080000;
- break; /* => 512Kb */
- default:
- *addr2 = 0xf0; /* => no or unknown flash */
- return 0;
- }
- }
- else { /* MAIN Flash */
- unsigned long value;
- volatile unsigned long * addr2 = (unsigned long *)addr;
+ /* Device ID */
+ value = *(addr2 + 1);
+ switch (value) {
+ case (unsigned char) AMD_ID_LV040B:
+ case (unsigned char) STM_ID_29W040B:
+ info->flash_id += FLASH_AM040;
+ info->sector_count = 8;
+ info->size = 0x00080000;
+ break; /* => 512Kb */
+ default:
+ *addr2 = 0xf0; /* => no or unknown flash */
+ return 0;
+ }
+ } else { /* MAIN Flash */
+ unsigned long value;
+ volatile unsigned long *addr2 = (unsigned long *) addr;
+
+ /* Write auto select command: read Manufacturer ID */
+ *addr2 = 0x90909090;
+
+ /* Manufacture ID */
+ value = *addr2;
+ switch (value) {
+ case (unsigned long) INTEL_MANUFACT:
+ info->flash_id = FLASH_MAN_INTEL;
+ break;
+ default:
+ *addr2 = 0xff; /* no or unknown flash */
+ return 0;
+ }
- /* Write auto select command: read Manufacturer ID */
- *addr2 = 0x90909090;
+ /* Device ID - This shit is interleaved... */
+ value = *(addr2 + 1);
+ switch (value) {
+ case (unsigned long) INTEL_ID_28F320J3A:
+ info->flash_id += FLASH_28F320J3A;
+ info->sector_count = 32;
+ info->size = 0x00400000 * 2;
+ break; /* => 2 X 4 MB */
+ case (unsigned long) INTEL_ID_28F640J3A:
+ info->flash_id += FLASH_28F640J3A;
+ info->sector_count = 64;
+ info->size = 0x00800000 * 2;
+ break; /* => 2 X 8 MB */
+ case (unsigned long) INTEL_ID_28F128J3A:
+ info->flash_id += FLASH_28F128J3A;
+ info->sector_count = 128;
+ info->size = 0x01000000 * 2;
+ break; /* => 2 X 16 MB */
+ default:
+ *addr2 = 0xff; /* => no or unknown flash */
+ }
+ }
- /* Manufacture ID */
- value = *addr2;
- switch (value) {
- case (unsigned long)INTEL_MANUFACT:
- info->flash_id = FLASH_MAN_INTEL;
- break;
- default:
- *addr2 = 0xff; /* no or unknown flash */
- return 0;
+ /* Make sure we don't exceed CONFIG_SYS_MAX_FLASH_SECT */
+ if (info->sector_count > CONFIG_SYS_MAX_FLASH_SECT) {
+ printf("** ERROR: sector count %d > max (%d) **\n",
+ info->sector_count, CONFIG_SYS_MAX_FLASH_SECT);
+ info->sector_count = CONFIG_SYS_MAX_FLASH_SECT;
}
- /* Device ID - This shit is interleaved... */
- value = *(addr2 + 1);
- switch (value) {
- case (unsigned long)INTEL_ID_28F320J3A:
- info->flash_id += FLASH_28F320J3A;
- info->sector_count = 32;
- info->size = 0x00400000 * 2;
- break; /* => 2 X 4 MB */
- case (unsigned long)INTEL_ID_28F640J3A:
- info->flash_id += FLASH_28F640J3A;
- info->sector_count = 64;
- info->size = 0x00800000 * 2;
- break; /* => 2 X 8 MB */
- case (unsigned long)INTEL_ID_28F128J3A:
- info->flash_id += FLASH_28F128J3A;
- info->sector_count = 128;
- info->size = 0x01000000 * 2;
- break; /* => 2 X 16 MB */
- default:
- *addr2 = 0xff; /* => no or unknown flash */
- }
- }
-
- /* Make sure we don't exceed CONFIG_SYS_MAX_FLASH_SECT */
- if (info->sector_count > CONFIG_SYS_MAX_FLASH_SECT) {
- printf ("** ERROR: sector count %d > max (%d) **\n",
- info->sector_count, CONFIG_SYS_MAX_FLASH_SECT);
- info->sector_count = CONFIG_SYS_MAX_FLASH_SECT;
- }
-
- /* set up sector start address table */
- switch (info->flash_id & FLASH_TYPEMASK) {
+ /* set up sector start address table */
+ switch (info->flash_id & FLASH_TYPEMASK) {
case FLASH_AM040:
- for (i = 0; i < info->sector_count; i++)
- info->start[i] = base + (i * 0x00010000);
- break;
+ for (i = 0; i < info->sector_count; i++)
+ info->start[i] = base + (i * 0x00010000);
+ break;
case FLASH_28F320J3A:
case FLASH_28F640J3A:
case FLASH_28F128J3A:
- for (i = 0; i < info->sector_count; i++)
- info->start[i] = base + (i * 0x00020000 * 2); /* 2 Banks */
- break;
- }
-
- /* Test for Boot Flash */
- if (base == FLASH_BASE0_PRELIM) {
- volatile unsigned char *addr2;
- /* check for protected sectors */
- for (i = 0; i < info->sector_count; i++) {
- /* read sector protection at sector address, (AX .. A0) = 0x02 */
- /* D0 = 1 if protected */
- addr2 = (volatile unsigned char *)(info->start[i]);
- info->protect[i] = *(addr2 + 2) & 1;
- }
-
- /* Restore read mode */
- *(unsigned char *)base = 0xF0; /* Reset NORMAL Flash */
- }
- else { /* Main Flash */
- volatile unsigned long *addr2;
- /* check for protected sectors */
- for (i = 0; i < info->sector_count; i++) {
- /* read sector protection at sector address, (AX .. A0) = 0x02 */
- /* D0 = 1 if protected */
- addr2 = (volatile unsigned long *)(info->start[i]);
- info->protect[i] = *(addr2 + 2) & 0x1;
+ for (i = 0; i < info->sector_count; i++)
+ info->start[i] = base +
+ (i * 0x00020000 * 2); /* 2 Banks */
+ break;
}
- /* Restore read mode */
- *(unsigned long *)base = 0xFFFFFFFF; /* Reset Flash */
- }
+ /* Test for Boot Flash */
+ if (base == FLASH_BASE0_PRELIM) {
+ volatile unsigned char *addr2;
+
+ /* check for protected sectors */
+ for (i = 0; i < info->sector_count; i++) {
+ /*
+ * read sector protection at sector address,
+ * (AX .. A0) = 0x02
+ * D0 = 1 if protected
+ */
+ addr2 = (volatile unsigned char *) (info->start[i]);
+ info->protect[i] = *(addr2 + 2) & 1;
+ }
+
+ /* Restore read mode */
+ *(unsigned char *) base = 0xF0; /* Reset NORMAL Flash */
+ } else { /* Main Flash */
+ volatile unsigned long *addr2;
+
+ /* check for protected sectors */
+ for (i = 0; i < info->sector_count; i++) {
+ /*
+ * read sector protection at sector address,
+ * (AX .. A0) = 0x02
+ * D0 = 1 if protected
+ */
+ addr2 = (volatile unsigned long *) (info->start[i]);
+ info->protect[i] = *(addr2 + 2) & 0x1;
+ }
- return (info->size);
-} /* end flash_get_size() */
+ /* Restore read mode */
+ *(unsigned long *) base = 0xFFFFFFFF; /* Reset Flash */
+ }
-/*-----------------------------------------------------------------------
- */
+ return info->size;
+} /* end flash_get_size() */
static int wait_for_DQ7(ulong addr, uchar cmp_val, ulong tout)
{
- int i;
+ int i;
- volatile uchar *vaddr = (uchar *)addr;
+ volatile uchar *vaddr = (uchar *) addr;
- /* Loop X times */
- for (i = 1; i <= (100 * tout); i++) { /* Wait up to tout ms */
- udelay(10);
- /* Pause 10 us */
-
- /* Check for completion */
- if ((vaddr[0] & 0x80) == (cmp_val & 0x80)) {
- return 0;
- }
+ /* Loop X times */
+ for (i = 1; i <= (100 * tout); i++) { /* Wait up to tout ms */
+ udelay(10);
+ /* Pause 10 us */
- /* KEEP THE LUSER HAPPY - Print a dot every 1.1 seconds */
- if (!(i % 110000))
- putc('.');
+ /* Check for completion */
+ if ((vaddr[0] & 0x80) == (cmp_val & 0x80))
+ return 0;
- /* Kick the dog if needed */
- WATCHDOG_RESET();
- }
+ /* KEEP THE LUSER HAPPY - Print a dot every 1.1 seconds */
+ if (!(i % 110000))
+ putc('.');
- return 1;
-} /* wait_for_DQ7() */
+ /* Kick the dog if needed */
+ WATCHDOG_RESET();
+ }
-/*-----------------------------------------------------------------------
- */
+ return 1;
+} /* wait_for_DQ7() */
static int flash_erase8(flash_info_t *info, int s_first, int s_last)
{
- int tcode, rcode = 0;
- volatile uchar *addr = (uchar *)(info->start[0]);
- volatile uchar *sector_addr;
- int flag, prot, sect;
+ int tcode, rcode = 0;
+ volatile uchar *addr = (uchar *) (info->start[0]);
+ volatile uchar *sector_addr;
+ int flag, prot, sect;
+
+ /* Validate arguments */
+ 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;
+ }
- /* Validate arguments */
- 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;
- }
+ /* Check for KNOWN flash type */
+ if (info->flash_id == FLASH_UNKNOWN) {
+ printf("Can't erase unknown flash type - aborted\n");
+ return 1;
+ }
- /* Check for KNOWN flash type */
- if (info->flash_id == FLASH_UNKNOWN) {
- printf ("Can't erase unknown flash type - aborted\n");
- return 1;
- }
-
- /* Check for protected sectors */
- 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");
-
- /* Start erase on unprotected sectors */
- for (sect = s_first; sect <= s_last; sect++) {
- if (info->protect[sect] == 0) { /* not protected */
- sector_addr = (uchar *)(info->start[sect]);
-
- if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_STM)
- printf("Erasing block %p\n", sector_addr);
- else
- printf("Erasing sector %p\n", sector_addr);
-
- /* Disable interrupts which might cause Flash to timeout */
- flag = disable_interrupts();
-
- *(addr + 0x555) = (uchar)0xAA;
- *(addr + 0x2aa) = (uchar)0x55;
- *(addr + 0x555) = (uchar)0x80;
- *(addr + 0x555) = (uchar)0xAA;
- *(addr + 0x2aa) = (uchar)0x55;
- *sector_addr = (uchar)0x30; /* sector erase */
-
- /*
- * Wait for each sector to complete, it's more
- * reliable. According to AMD Spec, you must
- * issue all erase commands within a specified
- * timeout. This has been seen to fail, especially
- * if printf()s are included (for debug)!!
- * Takes up to 6 seconds.
- */
- tcode = wait_for_DQ7((ulong)sector_addr, 0x80, 6000);
-
- /* re-enable interrupts if necessary */
- if (flag)
- enable_interrupts();
+ /* Check for protected sectors */
+ 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");
+ }
- /* Make sure we didn't timeout */
- if (tcode) {
- printf ("Timeout\n");
- rcode = 1;
- }
+ /* Start erase on unprotected sectors */
+ for (sect = s_first; sect <= s_last; sect++) {
+ if (info->protect[sect] == 0) { /* not protected */
+ sector_addr = (uchar *) (info->start[sect]);
+
+ if ((info->flash_id & FLASH_VENDMASK) ==
+ FLASH_MAN_STM)
+ printf("Erasing block %p\n", sector_addr);
+ else
+ printf("Erasing sector %p\n", sector_addr);
+
+ /* Disable interrupts which might cause timeout */
+ flag = disable_interrupts();
+
+ *(addr + 0x555) = (uchar) 0xAA;
+ *(addr + 0x2aa) = (uchar) 0x55;
+ *(addr + 0x555) = (uchar) 0x80;
+ *(addr + 0x555) = (uchar) 0xAA;
+ *(addr + 0x2aa) = (uchar) 0x55;
+ *sector_addr = (uchar) 0x30; /* sector erase */
+
+ /*
+ * Wait for each sector to complete, it's more
+ * reliable. According to AMD Spec, you must
+ * issue all erase commands within a specified
+ * timeout. This has been seen to fail, especially
+ * if printf()s are included (for debug)!!
+ * Takes up to 6 seconds.
+ */
+ tcode = wait_for_DQ7((ulong) sector_addr, 0x80, 6000);
+
+ /* re-enable interrupts if necessary */
+ if (flag)
+ enable_interrupts();
+
+ /* Make sure we didn't timeout */
+ if (tcode) {
+ printf("Timeout\n");
+ rcode = 1;
+ }
+ }
}
- }
- /* wait at least 80us - let's wait 1 ms */
- udelay (1000);
+ /* wait at least 80us - let's wait 1 ms */
+ udelay(1000);
- /* reset to read mode */
- addr = (uchar *)info->start[0];
- *addr = (uchar)0xF0; /* reset bank */
+ /* reset to read mode */
+ addr = (uchar *) info->start[0];
+ *addr = (uchar) 0xF0; /* reset bank */
- printf (" done\n");
- return rcode;
-} /* end flash_erase8() */
+ printf(" done\n");
+ return rcode;
+} /* end flash_erase8() */
static int flash_erase32(flash_info_t *info, int s_first, int s_last)
{
- int flag, sect;
- ulong start, now, last;
- int prot = 0;
-
- /* Validate arguments */
- 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;
- }
-
- /* Check for KNOWN flash type */
- if ((info->flash_id & FLASH_VENDMASK) != FLASH_MAN_INTEL) {
- printf ("Can erase only Intel flash types - aborted\n");
- return 1;
- }
-
- /* Check for protected sectors */
- 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");
-
- start = get_timer (0);
- last = start;
- /* Start erase on unprotected sectors */
- for (sect = s_first; sect <= s_last; sect++) {
- WATCHDOG_RESET();
- if (info->protect[sect] == 0) { /* not protected */
- vu_long *addr = (vu_long *)(info->start[sect]);
- unsigned long status;
-
- /* Disable interrupts which might cause a timeout here */
- flag = disable_interrupts();
-
- *addr = 0x00500050; /* clear status register */
- *addr = 0x00200020; /* erase setup */
- *addr = 0x00D000D0; /* erase confirm */
-
- /* re-enable interrupts if necessary */
- if (flag)
- enable_interrupts();
+ int flag, sect;
+ ulong start, now, last;
+ int prot = 0;
+
+ /* Validate arguments */
+ 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;
+ }
- /* Wait at least 80us - let's wait 1 ms */
- udelay (1000);
+ /* Check for KNOWN flash type */
+ if ((info->flash_id & FLASH_VENDMASK) != FLASH_MAN_INTEL) {
+ printf("Can erase only Intel flash types - aborted\n");
+ return 1;
+ }
- while (((status = *addr) & 0x00800080) != 0x00800080) {
- if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
- printf ("Timeout\n");
- *addr = 0x00B000B0; /* suspend erase */
- *addr = 0x00FF00FF; /* reset to read mode */
- return 1;
- }
+ /* Check for protected sectors */
+ 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");
+ }
- /* show that we're waiting */
- if ((now - last) > 990) { /* every second */
- putc ('.');
- last = now;
+ start = get_timer(0);
+ last = start;
+ /* Start erase on unprotected sectors */
+ for (sect = s_first; sect <= s_last; sect++) {
+ WATCHDOG_RESET();
+ if (info->protect[sect] == 0) { /* not protected */
+ vu_long *addr = (vu_long *) (info->start[sect]);
+ unsigned long status;
+
+ /* Disable interrupts which might cause a timeout */
+ flag = disable_interrupts();
+
+ *addr = 0x00500050; /* clear status register */
+ *addr = 0x00200020; /* erase setup */
+ *addr = 0x00D000D0; /* erase confirm */
+
+ /* re-enable interrupts if necessary */
+ if (flag)
+ enable_interrupts();
+
+ /* Wait at least 80us - let's wait 1 ms */
+ udelay(1000);
+
+ while (((status = *addr) & 0x00800080) != 0x00800080) {
+ now = get_timer(start);
+ if (now > CONFIG_SYS_FLASH_ERASE_TOUT) {
+ printf("Timeout\n");
+ /* suspend erase */
+ *addr = 0x00B000B0;
+ /* reset to read mode */
+ *addr = 0x00FF00FF;
+ return 1;
+ }
+
+ /*
+ * show that we're waiting
+ * every second (?)
+ */
+ if ((now - last) > 990) {
+ putc('.');
+ last = now;
+ }
+ }
+ *addr = 0x00FF00FF; /* reset to read mode */
}
- }
- *addr = 0x00FF00FF; /* reset to read mode */
}
- }
- printf (" done\n");
- return 0;
-} /* end flash_erase32() */
+ printf(" done\n");
+ return 0;
+}
int flash_erase(flash_info_t *info, int s_first, int s_last)
{
- if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040)
- return flash_erase8(info, s_first, s_last);
- else
- return flash_erase32(info, s_first, s_last);
-} /* end flash_erase() */
+ if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040)
+ return flash_erase8(info, s_first, s_last);
+ else
+ return flash_erase32(info, s_first, s_last);
+}
-/*-----------------------------------------------------------------------
+/*
* Copy memory to flash, returns:
* 0 - OK
* 1 - write timeout
* 2 - Flash not erased
*/
-static int write_buff8(flash_info_t *info, uchar *src, ulong addr, ulong cnt)
+static int write_buff8(flash_info_t *info, uchar *src, ulong addr,
+ ulong cnt)
{
- ulong cp, wp, data;
- ulong start;
- int i, l, rc;
+ ulong cp, wp, data;
+ ulong start;
+ int i, l, rc;
- start = get_timer (0);
+ start = get_timer(0);
- wp = (addr & ~3); /* get lower word
- aligned address */
+ 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) {
- data = (data << 8) | (*(uchar *)cp);
- }
- for (; i<4 && cnt>0; ++i) {
- data = (data << 8) | *src++;
- --cnt;
- ++cp;
- }
- for (; cnt==0 && i<4; ++i, ++cp) {
- data = (data << 8) | (*(uchar *)cp);
+ /*
+ * handle unaligned start bytes
+ */
+ l = addr - wp;
+ if (l != 0) {
+ data = 0;
+ for (i = 0, cp = wp; i < l; ++i, ++cp)
+ data = (data << 8) | (*(uchar *) cp);
+
+ for (; i < 4 && cnt > 0; ++i) {
+ data = (data << 8) | *src++;
+ --cnt;
+ ++cp;
+ }
+
+ for (; cnt == 0 && i < 4; ++i, ++cp)
+ data = (data << 8) | (*(uchar *) cp);
+
+ rc = write_word8(info, wp, data);
+ if (rc != 0)
+ return rc;
+
+ wp += 4;
}
- if ((rc = write_word8(info, wp, data)) != 0) {
- return (rc);
+ /*
+ * handle word aligned part
+ */
+ while (cnt >= 4) {
+ data = 0;
+ for (i = 0; i < 4; ++i)
+ data = (data << 8) | *src++;
+
+ rc = write_word8(info, wp, data);
+ if (rc != 0)
+ return rc;
+
+ wp += 4;
+ cnt -= 4;
+ if (get_timer(start) > 1000) { /* every second */
+ WATCHDOG_RESET();
+ putc('.');
+ start = get_timer(0);
+ }
}
- wp += 4;
- }
- /*
- * handle word aligned part
- */
- while (cnt >= 4) {
+ if (cnt == 0)
+ return 0;
+
+ /*
+ * handle unaligned tail bytes
+ */
data = 0;
- for (i=0; i<4; ++i) {
- data = (data << 8) | *src++;
- }
- if ((rc = write_word8(info, wp, data)) != 0) {
- return (rc);
- }
- wp += 4;
- cnt -= 4;
- if (get_timer(start) > 1000) { /* every second */
- WATCHDOG_RESET();
- putc ('.');
- start = get_timer(0);
- }
- }
-
- if (cnt == 0) {
- return (0);
- }
-
- /*
- * handle unaligned tail bytes
- */
- data = 0;
- for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
- data = (data << 8) | *src++;
- --cnt;
- }
- for (; i<4; ++i, ++cp) {
- data = (data << 8) | (*(uchar *)cp);
- }
-
- return (write_word8(info, wp, data));
-} /* end write_buff8() */
+ for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
+ data = (data << 8) | *src++;
+ --cnt;
+ }
+
+ for (; i < 4; ++i, ++cp)
+ data = (data << 8) | (*(uchar *) cp);
+
+ return write_word8(info, wp, data);
+}
#define FLASH_WIDTH 4 /* flash bus width in bytes */
-static int write_buff32 (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
+static int write_buff32(flash_info_t *info, uchar *src, ulong addr,
+ ulong cnt)
{
ulong cp, wp, data;
int i, l, rc;
ulong start;
- start = get_timer (0);
+ start = get_timer(0);
- if (info->flash_id == FLASH_UNKNOWN) {
+ if (info->flash_id == FLASH_UNKNOWN)
return 4;
- }
- wp = (addr & ~(FLASH_WIDTH-1)); /* get lower FLASH_WIDTH aligned address */
+ /* get lower FLASH_WIDTH aligned address */
+ wp = (addr & ~(FLASH_WIDTH - 1));
/*
* handle unaligned start bytes
*/
if ((l = addr - wp) != 0) {
data = 0;
- for (i=0, cp=wp; i<l; ++i, ++cp) {
- data = (data << 8) | (*(uchar *)cp);
- }
- for (; i<FLASH_WIDTH && cnt>0; ++i) {
+ for (i = 0, cp = wp; i < l; ++i, ++cp)
+ data = (data << 8) | (*(uchar *) cp);
+
+ for (; i < FLASH_WIDTH && cnt > 0; ++i) {
data = (data << 8) | *src++;
--cnt;
++cp;
}
- for (; cnt==0 && i<FLASH_WIDTH; ++i, ++cp) {
- data = (data << 8) | (*(uchar *)cp);
- }
- if ((rc = write_word32(info, wp, data)) != 0) {
- return (rc);
- }
+ for (; cnt == 0 && i < FLASH_WIDTH; ++i, ++cp)
+ data = (data << 8) | (*(uchar *) cp);
+
+ rc = write_word32(info, wp, data);
+ if (rc != 0)
+ return rc;
+
wp += FLASH_WIDTH;
}
*/
while (cnt >= FLASH_WIDTH) {
data = 0;
- for (i=0; i<FLASH_WIDTH; ++i) {
+ for (i = 0; i < FLASH_WIDTH; ++i)
data = (data << 8) | *src++;
- }
- if ((rc = write_word32(info, wp, data)) != 0) {
- return (rc);
- }
- wp += FLASH_WIDTH;
+
+ rc = write_word32(info, wp, data);
+ if (rc != 0)
+ return rc;
+
+ wp += FLASH_WIDTH;
cnt -= FLASH_WIDTH;
- if (get_timer(start) > 990) { /* every second */
- putc ('.');
+ if (get_timer(start) > 990) { /* every second */
+ putc('.');
start = get_timer(0);
}
}
- if (cnt == 0) {
- return (0);
- }
+ if (cnt == 0)
+ return 0;
/*
* handle unaligned tail bytes
*/
data = 0;
- for (i=0, cp=wp; i<FLASH_WIDTH && cnt>0; ++i, ++cp) {
+ for (i = 0, cp = wp; i < FLASH_WIDTH && cnt > 0; ++i, ++cp) {
data = (data << 8) | *src++;
--cnt;
}
- for (; i<FLASH_WIDTH; ++i, ++cp) {
- data = (data << 8) | (*(uchar *)cp);
- }
- return (write_word32(info, wp, data));
-} /* write_buff32() */
+ for (; i < FLASH_WIDTH; ++i, ++cp)
+ data = (data << 8) | (*(uchar *) cp);
+
+ return write_word32(info, wp, data);
+}
int write_buff(flash_info_t *info, uchar *src, ulong addr, ulong cnt)
{
- int retval;
+ int retval;
- if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040)
- retval = write_buff8(info, src, addr, cnt);
- else
- retval = write_buff32(info, src, addr, cnt);
+ if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040)
+ retval = write_buff8(info, src, addr, cnt);
+ else
+ retval = write_buff32(info, src, addr, cnt);
- return retval;
-} /* end write_buff() */
+ return retval;
+}
-/*-----------------------------------------------------------------------
+/*
* Write a word to Flash, returns:
* 0 - OK
* 1 - write timeout
static int write_word8(flash_info_t *info, ulong dest, ulong data)
{
- volatile uchar *addr2 = (uchar *)(info->start[0]);
- volatile uchar *dest2 = (uchar *)dest;
- volatile uchar *data2 = (uchar *)&data;
- int flag;
- int i, tcode, rcode = 0;
-
- /* Check if Flash is (sufficently) erased */
- if ((*((volatile uchar *)dest) &
- (uchar)data) != (uchar)data) {
- return (2);
- }
-
- for (i=0; i < (4 / sizeof(uchar)); i++) {
- /* Disable interrupts which might cause a timeout here */
- flag = disable_interrupts();
+ volatile uchar *addr2 = (uchar *) (info->start[0]);
+ volatile uchar *dest2 = (uchar *) dest;
+ volatile uchar *data2 = (uchar *) &data;
+ int flag;
+ int i, tcode, rcode = 0;
- *(addr2 + 0x555) = (uchar)0xAA;
- *(addr2 + 0x2aa) = (uchar)0x55;
- *(addr2 + 0x555) = (uchar)0xA0;
+ /* Check if Flash is (sufficently) erased */
+ if ((*((volatile uchar *)dest) & (uchar)data) != (uchar)data)
+ return 2;
- dest2[i] = data2[i];
+ for (i = 0; i < (4 / sizeof(uchar)); i++) {
+ /* Disable interrupts which might cause a timeout here */
+ flag = disable_interrupts();
- /* Wait for write to complete, up to 1ms */
- tcode = wait_for_DQ7((ulong)&dest2[i], data2[i], 1);
+ *(addr2 + 0x555) = (uchar) 0xAA;
+ *(addr2 + 0x2aa) = (uchar) 0x55;
+ *(addr2 + 0x555) = (uchar) 0xA0;
- /* re-enable interrupts if necessary */
- if (flag)
- enable_interrupts();
+ dest2[i] = data2[i];
+
+ /* Wait for write to complete, up to 1ms */
+ tcode = wait_for_DQ7((ulong) &dest2[i], data2[i], 1);
- /* Make sure we didn't timeout */
- if (tcode) {
- rcode = 1;
+ /* re-enable interrupts if necessary */
+ if (flag)
+ enable_interrupts();
+
+ /* Make sure we didn't timeout */
+ if (tcode)
+ rcode = 1;
}
- }
- return rcode;
-} /* end write_word8() */
+ return rcode;
+}
static int write_word32(flash_info_t *info, ulong dest, ulong data)
{
- vu_long *addr = (vu_long *)dest;
- ulong status;
- ulong start;
- int flag;
+ vu_long *addr = (vu_long *) dest;
+ ulong status;
+ ulong start;
+ int flag;
+
+ /* Check if Flash is (sufficiently) erased */
+ if ((*addr & data) != data)
+ return 2;
- /* Check if Flash is (sufficiently) erased */
- if ((*addr & data) != data) {
- return (2);
- }
- /* Disable interrupts which might cause a timeout here */
- flag = disable_interrupts();
+ /* Disable interrupts which might cause a timeout here */
+ flag = disable_interrupts();
- *addr = 0x00400040; /* write setup */
- *addr = data;
+ *addr = 0x00400040; /* write setup */
+ *addr = data;
- /* re-enable interrupts if necessary */
- if (flag)
- enable_interrupts();
+ /* re-enable interrupts if necessary */
+ if (flag)
+ enable_interrupts();
- start = get_timer (0);
+ start = get_timer(0);
- while (((status = *addr) & 0x00800080) != 0x00800080) {
- WATCHDOG_RESET();
- if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
- *addr = 0x00FF00FF; /* restore read mode */
- return (1);
+ while (((status = *addr) & 0x00800080) != 0x00800080) {
+ WATCHDOG_RESET();
+ if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
+ *addr = 0x00FF00FF; /* restore read mode */
+ return 1;
+ }
}
- }
- *addr = 0x00FF00FF; /* restore read mode */
-
- return (0);
-} /* end write_word32() */
+ *addr = 0x00FF00FF; /* restore read mode */
+ return 0;
+}
static int _flash_protect(flash_info_t *info, long sector)
{
- int i;
- int flag;
- ulong status;
- int rcode = 0;
- volatile long *addr = (long *)sector;
+ int i;
+ int flag;
+ ulong status;
+ int rcode = 0;
+ volatile long *addr = (long *)sector;
- switch(info->flash_id & FLASH_TYPEMASK) {
+ switch (info->flash_id & FLASH_TYPEMASK) {
case FLASH_28F320J3A:
case FLASH_28F640J3A:
case FLASH_28F128J3A:
- /* Disable interrupts which might cause Flash to timeout */
- flag = disable_interrupts();
+ /* Disable interrupts which might cause Flash to timeout */
+ flag = disable_interrupts();
+
+ /* Issue command */
+ *addr = 0x00500050L; /* Clear the status register */
+ *addr = 0x00600060L; /* Set lock bit setup */
+ *addr = 0x00010001L; /* Set lock bit confirm */
+
+ /* Wait for command completion */
+ for (i = 0; i < 10; i++) { /* 75us timeout, wait 100us */
+ udelay(10);
+ if ((*addr & 0x00800080L) == 0x00800080L)
+ break;
+ }
- /* Issue command */
- *addr = 0x00500050L; /* Clear the status register */
- *addr = 0x00600060L; /* Set lock bit setup */
- *addr = 0x00010001L; /* Set lock bit confirm */
+ /* Not successful? */
+ status = *addr;
+ if (status != 0x00800080L) {
+ printf("Protect %x sector failed: %x\n",
+ (uint) sector, (uint) status);
+ rcode = 1;
+ }
- /* Wait for command completion */
- for (i = 0; i < 10; i++) { /* 75us timeout, wait 100us */
- udelay(10);
- if ((*addr & 0x00800080L) == 0x00800080L)
- break;
- }
-
- /* Not successful? */
- status = *addr;
- if (status != 0x00800080L) {
- printf("Protect %x sector failed: %x\n",
- (uint)sector, (uint)status);
- rcode = 1;
- }
-
- /* Restore read mode */
- *addr = 0x00ff00ffL;
-
- /* re-enable interrupts if necessary */
- if (flag)
- enable_interrupts();
+ /* Restore read mode */
+ *addr = 0x00ff00ffL;
+
+ /* re-enable interrupts if necessary */
+ if (flag)
+ enable_interrupts();
- break;
- case FLASH_AM040: /* No soft sector protection */
- break;
- }
+ break;
+ case FLASH_AM040: /* No soft sector protection */
+ break;
+ }
- /* Turn protection on for this sector */
- for (i = 0; i < info->sector_count; i++) {
- if (info->start[i] == sector) {
- info->protect[i] = 1;
- break;
+ /* Turn protection on for this sector */
+ for (i = 0; i < info->sector_count; i++) {
+ if (info->start[i] == sector) {
+ info->protect[i] = 1;
+ break;
+ }
}
- }
- return rcode;
-} /* end _flash_protect() */
+ return rcode;
+}
static int _flash_unprotect(flash_info_t *info, long sector)
{
- int i;
- int flag;
- ulong status;
- int rcode = 0;
- volatile long *addr = (long *)sector;
+ int i;
+ int flag;
+ ulong status;
+ int rcode = 0;
+ volatile long *addr = (long *) sector;
- switch(info->flash_id & FLASH_TYPEMASK) {
+ switch (info->flash_id & FLASH_TYPEMASK) {
case FLASH_28F320J3A:
case FLASH_28F640J3A:
case FLASH_28F128J3A:
- /* Disable interrupts which might cause Flash to timeout */
- flag = disable_interrupts();
-
- *addr = 0x00500050L; /* Clear the status register */
- *addr = 0x00600060L; /* Clear lock bit setup */
- *addr = 0x00D000D0L; /* Clear lock bit confirm */
-
- /* Wait for command completion */
- for (i = 0; i < 80 ; i++) { /* 700ms timeout, wait 800 */
- udelay(10000); /* Delay 10ms */
- if ((*addr & 0x00800080L) == 0x00800080L)
- break;
- }
-
- /* Not successful? */
- status = *addr;
- if (status != 0x00800080L) {
- printf("Un-protect %x sector failed: %x\n",
- (uint)sector, (uint)status);
- *addr = 0x00ff00ffL;
- rcode = 1;
- }
+ /* Disable interrupts which might cause Flash to timeout */
+ flag = disable_interrupts();
+
+ *addr = 0x00500050L; /* Clear the status register */
+ *addr = 0x00600060L; /* Clear lock bit setup */
+ *addr = 0x00D000D0L; /* Clear lock bit confirm */
+
+ /* Wait for command completion */
+ for (i = 0; i < 80; i++) { /* 700ms timeout, wait 800 */
+ udelay(10000); /* Delay 10ms */
+ if ((*addr & 0x00800080L) == 0x00800080L)
+ break;
+ }
- /* restore read mode */
- *addr = 0x00ff00ffL;
+ /* Not successful? */
+ status = *addr;
+ if (status != 0x00800080L) {
+ printf("Un-protect %x sector failed: %x\n",
+ (uint) sector, (uint) status);
+ *addr = 0x00ff00ffL;
+ rcode = 1;
+ }
- /* re-enable interrupts if necessary */
- if (flag)
- enable_interrupts();
+ /* restore read mode */
+ *addr = 0x00ff00ffL;
- break;
- case FLASH_AM040: /* No soft sector protection */
- break;
- }
+ /* re-enable interrupts if necessary */
+ if (flag)
+ enable_interrupts();
- /*
- * Fix Intel's little red wagon. Reprotect
- * sectors that were protected before we undid
- * protection on a specific sector.
- */
- for (i = 0; i < info->sector_count; i++) {
- if (info->start[i] != sector) {
- if (info->protect[i]) {
- if (_flash_protect(info, info->start[i]))
- rcode = 1;
- }
+ break;
+ case FLASH_AM040: /* No soft sector protection */
+ break;
}
- else /* Turn protection off for this sector */
- info->protect[i] = 0;
- }
- return rcode;
-} /* end _flash_unprotect() */
+ /*
+ * Fix Intel's little red wagon. Reprotect
+ * sectors that were protected before we undid
+ * protection on a specific sector.
+ */
+ for (i = 0; i < info->sector_count; i++) {
+ if (info->start[i] != sector) {
+ if (info->protect[i]) {
+ if (_flash_protect(info, info->start[i]))
+ rcode = 1;
+ }
+ } else /* Turn protection off for this sector */
+ info->protect[i] = 0;
+ }
+ return rcode;
+}
int flash_real_protect(flash_info_t *info, long sector, int prot)
{
- int rcode;
+ int rcode;
- if (prot)
- rcode = _flash_protect(info, info->start[sector]);
- else
- rcode = _flash_unprotect(info, info->start[sector]);
-
- return rcode;
-} /* end flash_real_protect() */
+ if (prot)
+ rcode = _flash_protect(info, info->start[sector]);
+ else
+ rcode = _flash_unprotect(info, info->start[sector]);
-/*-----------------------------------------------------------------------
- */
+ return rcode;
+}
projects / u-boot / commitdiff