#include <asm/byteorder.h>
#include <environment.h>
#include <mtd/cfi_flash.h>
+#include <watchdog.h>
/*
* This file implements a Common Flash Interface (CFI) driver for
#endif
/* Wait for command completion */
+#ifdef CONFIG_SYS_LOW_RES_TIMER
reset_timer();
+#endif
start = get_timer (0);
+ WATCHDOG_RESET();
while (flash_is_busy (info, sector)) {
if (get_timer (start) > tout) {
printf ("Flash %s timeout at address %lx data %lx\n",
prompt, info->start[sector],
flash_read_long (info, sector, 0));
flash_write_cmd (info, sector, 0, info->cmd_reset);
+ udelay(1);
return ERR_TIMOUT;
}
udelay (1); /* also triggers watchdog */
puts ("Vpp Low Error.\n");
}
flash_write_cmd (info, sector, 0, info->cmd_reset);
+ udelay(1);
break;
default:
break;
#endif
/* Wait for command completion */
+#ifdef CONFIG_SYS_LOW_RES_TIMER
reset_timer();
+#endif
start = get_timer(0);
+ WATCHDOG_RESET();
while (1) {
switch (info->portwidth) {
case FLASH_CFI_8BIT:
static flash_sect_t find_sector (flash_info_t * info, ulong addr)
{
static flash_sect_t saved_sector = 0; /* previously found sector */
+ static flash_info_t *saved_info = 0; /* previously used flash bank */
flash_sect_t sector = saved_sector;
+ if ((info != saved_info) || (sector >= info->sector_count))
+ sector = 0;
+
while ((info->start[sector] < addr)
&& (sector < info->sector_count - 1))
sector++;
sector--;
saved_sector = sector;
+ saved_info = info;
return sector;
}
void *src = cp;
void *dst = (void *)dest;
void *dst2 = dst;
- int flag = 0;
+ int flag = 1;
uint offset = 0;
unsigned int shift;
uchar write_cmd;
cnt = len >> shift;
- while ((cnt-- > 0) && (flag == 0)) {
+ while ((cnt-- > 0) && (flag == 1)) {
switch (info->portwidth) {
case FLASH_CFI_8BIT:
flag = ((flash_read8(dst2) & flash_read8(src)) ==
return;
}
- printf ("%s FLASH (%d x %d)",
+ printf ("%s flash (%d x %d)",
info->name,
(info->portwidth << 3), (info->chipwidth << 3));
if (info->size < 1024*1024)
info->manufacturer_id);
printf (info->chipwidth == FLASH_CFI_16BIT ? "%04X" : "%02X",
info->device_id);
- if (info->device_id == 0x7E) {
- printf("%04X", info->device_id2);
+ if ((info->device_id & 0xff) == 0x7E) {
+ printf(info->chipwidth == FLASH_CFI_16BIT ? "%04X" : "%02X",
+ info->device_id2);
}
printf ("\n Erase timeout: %ld ms, write timeout: %ld ms\n",
info->erase_blk_tout,
*/
#ifdef CONFIG_SYS_FLASH_PROTECTION
+static int cfi_protect_bugfix(flash_info_t *info, long sector, int prot)
+{
+ if ((info->manufacturer_id == (uchar)INTEL_MANUFACT) &&
+ (info->device_id == NUMONYX_256MBIT)) {
+ /*
+ * see errata called
+ * "Numonyx Axcell P33/P30 Specification Update" :)
+ */
+ flash_write_cmd(info, sector, 0, FLASH_CMD_READ_ID);
+ if (!flash_isequal(info, sector, FLASH_OFFSET_PROTECT,
+ prot)) {
+ /*
+ * cmd must come before FLASH_CMD_PROTECT + 20us
+ * Disable interrupts which might cause a timeout here.
+ */
+ int flag = disable_interrupts();
+ unsigned short cmd;
+
+ if (prot)
+ cmd = FLASH_CMD_PROTECT_SET;
+ else
+ cmd = FLASH_CMD_PROTECT_CLEAR;
+ flash_write_cmd(info, sector, 0,
+ FLASH_CMD_PROTECT);
+ flash_write_cmd(info, sector, 0, cmd);
+ /* re-enable interrupts if necessary */
+ if (flag)
+ enable_interrupts();
+ }
+ return 1;
+ }
+ return 0;
+}
+
int flash_real_protect (flash_info_t * info, long sector, int prot)
{
int retcode = 0;
case CFI_CMDSET_INTEL_PROG_REGIONS:
case CFI_CMDSET_INTEL_STANDARD:
case CFI_CMDSET_INTEL_EXTENDED:
- /*
- * see errata called
- * "Numonyx Axcell P33/P30 Specification Update" :)
- */
- flash_write_cmd (info, sector, 0, FLASH_CMD_READ_ID);
- if (!flash_isequal (info, sector, FLASH_OFFSET_PROTECT,
- prot)) {
- /*
- * cmd must come before FLASH_CMD_PROTECT + 20us
- * Disable interrupts which might cause a timeout here.
- */
- int flag = disable_interrupts ();
- unsigned short cmd;
-
+ if (!cfi_protect_bugfix(info, sector, prot)) {
+ flash_write_cmd(info, sector, 0,
+ FLASH_CMD_CLEAR_STATUS);
+ flash_write_cmd(info, sector, 0,
+ FLASH_CMD_PROTECT);
if (prot)
- cmd = FLASH_CMD_PROTECT_SET;
+ flash_write_cmd(info, sector, 0,
+ FLASH_CMD_PROTECT_SET);
else
- cmd = FLASH_CMD_PROTECT_CLEAR;
+ flash_write_cmd(info, sector, 0,
+ FLASH_CMD_PROTECT_CLEAR);
- flash_write_cmd (info, sector, 0,
- FLASH_CMD_PROTECT);
- flash_write_cmd (info, sector, 0, cmd);
- /* re-enable interrupts if necessary */
- if (flag)
- enable_interrupts ();
}
break;
case CFI_CMDSET_AMD_EXTENDED:
0, ATM_CMD_UNLOCK_SECT);
}
}
+ if (info->manufacturer_id == (uchar)AMD_MANUFACT) {
+ int flag = disable_interrupts();
+ int lock_flag;
+
+ flash_unlock_seq(info, 0);
+ flash_write_cmd(info, 0, info->addr_unlock1,
+ AMD_CMD_SET_PPB_ENTRY);
+ lock_flag = flash_isset(info, sector, 0, 0x01);
+ if (prot) {
+ if (lock_flag) {
+ flash_write_cmd(info, sector, 0,
+ AMD_CMD_PPB_LOCK_BC1);
+ flash_write_cmd(info, sector, 0,
+ AMD_CMD_PPB_LOCK_BC2);
+ }
+ debug("sector %ld %slocked\n", sector,
+ lock_flag ? "" : "already ");
+ } else {
+ if (!lock_flag) {
+ debug("unlock %ld\n", sector);
+ flash_write_cmd(info, 0, 0,
+ AMD_CMD_PPB_UNLOCK_BC1);
+ flash_write_cmd(info, 0, 0,
+ AMD_CMD_PPB_UNLOCK_BC2);
+ }
+ debug("sector %ld %sunlocked\n", sector,
+ !lock_flag ? "" : "already ");
+ }
+ if (flag)
+ enable_interrupts();
+
+ if (flash_status_check(info, sector,
+ info->erase_blk_tout,
+ prot ? "protect" : "unprotect"))
+ printf("status check error\n");
+
+ flash_write_cmd(info, 0, 0,
+ AMD_CMD_SET_PPB_EXIT_BC1);
+ flash_write_cmd(info, 0, 0,
+ AMD_CMD_SET_PPB_EXIT_BC2);
+ }
break;
#ifdef CONFIG_FLASH_CFI_LEGACY
case CFI_CMDSET_AMD_LEGACY:
flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
memcpy (dst, src + offset, len);
flash_write_cmd (info, 0, 0, info->cmd_reset);
+ udelay(1);
flash_unmap(info, 0, FLASH_OFFSET_USER_PROTECTION, src);
}
flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
memcpy (buffer, src + offset, len);
flash_write_cmd (info, 0, 0, info->cmd_reset);
+ udelay(1);
flash_unmap(info, 0, FLASH_OFFSET_INTEL_PROTECTION, src);
}
static void cmdset_intel_read_jedec_ids(flash_info_t *info)
{
flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
+ udelay(1);
flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID);
udelay(1000); /* some flash are slow to respond */
info->manufacturer_id = flash_read_uchar (info,
case FLASH_CFI_16BIT:
info->device_id = flash_read_word (info,
FLASH_OFFSET_DEVICE_ID);
+ if ((info->device_id & 0xff) == 0x7E) {
+ /* AMD 3-byte (expanded) device ids */
+ info->device_id2 = flash_read_uchar (info,
+ FLASH_OFFSET_DEVICE_ID2);
+ info->device_id2 <<= 8;
+ info->device_id2 |= flash_read_uchar (info,
+ FLASH_OFFSET_DEVICE_ID3);
+ }
break;
default:
break;
}
flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
+ udelay(1);
}
static int cmdset_amd_init(flash_info_t *info, struct cfi_qry *qry)
cmdset_amd_read_jedec_ids(info);
flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);
+#ifdef CONFIG_SYS_FLASH_PROTECTION
+ if (info->ext_addr && info->manufacturer_id == (uchar)AMD_MANUFACT) {
+ ushort spus;
+
+ /* read sector protect/unprotect scheme */
+ spus = flash_read_uchar(info, info->ext_addr + 9);
+ if (spus == 0x8)
+ info->legacy_unlock = 1;
+ }
+#endif
+
return 0;
}
* that AMD flash roms ignore the Intel command.
*/
flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
+ udelay(1);
flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
}
void flash_cmd_reset(flash_info_t *info)
if (qry->num_erase_regions > 1) {
/* reverse geometry if top boot part */
if (info->cfi_version < 0x3131) {
- /* CFI < 1.1, guess by device id (M29W320{DT,ET} only) */
- if (info->device_id == 0x22CA ||
- info->device_id == 0x2256) {
+ /* CFI < 1.1, guess by device id */
+ if (info->device_id == 0x22CA || /* M29W320DT */
+ info->device_id == 0x2256 || /* M29W320ET */
+ info->device_id == 0x22D7) { /* M29W800DT */
cfi_reverse_geometry(qry);
}
+ } else if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) {
+ /* CFI >= 1.1, deduct from top/bottom flag */
+ /* note: ext_addr is valid since cfi_version > 0 */
+ cfi_reverse_geometry(qry);
}
}
}
/* Do manufacturer-specific fixups */
switch (info->manufacturer_id) {
- case 0x0001:
+ case 0x0001: /* AMD */
+ case 0x0037: /* AMIC */
flash_fixup_amd(info, &qry);
break;
case 0x001f:
/*-----------------------------------------------------------------------
*/
-unsigned long flash_init (void)
+
+void flash_protect_default(void)
{
- unsigned long size = 0;
- int i;
#if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
+ int i;
struct apl_s {
ulong start;
ulong size;
} apl[] = CONFIG_SYS_FLASH_AUTOPROTECT_LIST;
#endif
+ /* Monitor protection ON by default */
+#if (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE) && \
+ (!defined(CONFIG_MONITOR_IS_IN_RAM))
+ flash_protect(FLAG_PROTECT_SET,
+ CONFIG_SYS_MONITOR_BASE,
+ CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
+ flash_get_info(CONFIG_SYS_MONITOR_BASE));
+#endif
+
+ /* Environment protection ON by default */
+#ifdef CONFIG_ENV_IS_IN_FLASH
+ flash_protect(FLAG_PROTECT_SET,
+ CONFIG_ENV_ADDR,
+ CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
+ flash_get_info(CONFIG_ENV_ADDR));
+#endif
+
+ /* Redundant environment protection ON by default */
+#ifdef CONFIG_ENV_ADDR_REDUND
+ flash_protect(FLAG_PROTECT_SET,
+ CONFIG_ENV_ADDR_REDUND,
+ CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
+ flash_get_info(CONFIG_ENV_ADDR_REDUND));
+#endif
+
+#if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
+ for (i = 0; i < (sizeof(apl) / sizeof(struct apl_s)); i++) {
+ debug("autoprotecting from %08lx to %08lx\n",
+ apl[i].start, apl[i].start + apl[i].size - 1);
+ flash_protect(FLAG_PROTECT_SET,
+ apl[i].start,
+ apl[i].start + apl[i].size - 1,
+ flash_get_info(apl[i].start));
+ }
+#endif
+}
+
+unsigned long flash_init (void)
+{
+ unsigned long size = 0;
+ int i;
+
#ifdef CONFIG_SYS_FLASH_PROTECTION
/* read environment from EEPROM */
char s[64];
size += flash_info[i].size;
if (flash_info[i].flash_id == FLASH_UNKNOWN) {
#ifndef CONFIG_SYS_FLASH_QUIET_TEST
- printf ("## Unknown FLASH on Bank %d "
+ printf ("## Unknown flash on Bank %d "
"- Size = 0x%08lx = %ld MB\n",
i+1, flash_info[i].size,
flash_info[i].size >> 20);
#endif /* CONFIG_SYS_FLASH_PROTECTION */
}
- /* Monitor protection ON by default */
-#if (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE) && \
- (!defined(CONFIG_MONITOR_IS_IN_RAM))
- flash_protect (FLAG_PROTECT_SET,
- CONFIG_SYS_MONITOR_BASE,
- CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
- flash_get_info(CONFIG_SYS_MONITOR_BASE));
-#endif
-
- /* Environment protection ON by default */
-#ifdef CONFIG_ENV_IS_IN_FLASH
- flash_protect (FLAG_PROTECT_SET,
- CONFIG_ENV_ADDR,
- CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
- flash_get_info(CONFIG_ENV_ADDR));
-#endif
-
- /* Redundant environment protection ON by default */
-#ifdef CONFIG_ENV_ADDR_REDUND
- flash_protect (FLAG_PROTECT_SET,
- CONFIG_ENV_ADDR_REDUND,
- CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
- flash_get_info(CONFIG_ENV_ADDR_REDUND));
-#endif
-
-#if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
- for (i = 0; i < (sizeof(apl) / sizeof(struct apl_s)); i++) {
- debug("autoprotecting from %08x to %08x\n",
- apl[i].start, apl[i].start + apl[i].size - 1);
- flash_protect (FLAG_PROTECT_SET,
- apl[i].start,
- apl[i].start + apl[i].size - 1,
- flash_get_info(apl[i].start));
- }
-#endif
-
+ flash_protect_default();
#ifdef CONFIG_FLASH_CFI_MTD
cfi_mtd_init();
#endif
projects / karo-tx-uboot.git / blobdiff