*/
static uint flash_offset_cfi[2] = { FLASH_OFFSET_CFI, FLASH_OFFSET_CFI_ALT };
+#ifdef CONFIG_FLASH_CFI_MTD
static uint flash_verbose = 1;
+#else
+#define flash_verbose 1
+#endif
flash_info_t flash_info[CFI_MAX_FLASH_BANKS]; /* FLASH chips info */
#define CONFIG_SYS_FLASH_CFI_WIDTH FLASH_CFI_8BIT
#endif
+/*
+ * 0xffff is an undefined value for the configuration register. When
+ * this value is returned, the configuration register shall not be
+ * written at all (default mode).
+ */
+static u16 cfi_flash_config_reg(int i)
+{
+#ifdef CONFIG_SYS_CFI_FLASH_CONFIG_REGS
+ return ((u16 [])CONFIG_SYS_CFI_FLASH_CONFIG_REGS)[i];
+#else
+ return 0xffff;
+#endif
+}
+
#if defined(CONFIG_SYS_MAX_FLASH_BANKS_DETECT)
int cfi_flash_num_flash_banks = CONFIG_SYS_MAX_FLASH_BANKS_DETECT;
#endif
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;
}
{
int k;
int size;
- volatile unsigned long *flash;
+ u32 *flash;
/*
* Check if whole sector is erased
*/
size = flash_sector_size(info, i);
- flash = (volatile unsigned long *) info->start[i];
+ flash = (u32 *)info->start[i];
/* divide by 4 for longword access */
size = size >> 2;
for (k = 0; k < size; k++) {
- if (*flash++ != 0xffffffff)
+ if (flash_read32(flash++) != 0xffffffff)
return 0; /* not erased */
}
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)
#endif
};
+ /*
+ * Flash needs to be in status register read mode for
+ * flash_full_status_check() to work correctly
+ */
+ flash_write_cmd(info, sector, 0, FLASH_CMD_READ_STATUS);
if ((retcode =
flash_full_status_check (info, sector, info->erase_blk_tout,
prot ? "protect" : "unprotect")) == 0) {
* The following code cannot be run from FLASH!
*
*/
-ulong flash_get_size (phys_addr_t base, int banknum, unsigned long max_size)
+ulong flash_get_size (phys_addr_t base, int banknum)
{
flash_info_t *info = &flash_info[banknum];
int i, j;
int erase_region_size;
int erase_region_count;
struct cfi_qry qry;
+ unsigned long max_size;
memset(&qry, 0, sizeof(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:
info->size = 1 << qry.dev_size;
/* multiply the size by the number of chips */
info->size *= size_ratio;
+ max_size = cfi_flash_bank_size(banknum);
if (max_size && (info->size > max_size)) {
debug("[truncated from %ldMiB]", info->size >> 20);
info->size = max_size;
case CFI_CMDSET_INTEL_PROG_REGIONS:
case CFI_CMDSET_INTEL_EXTENDED:
case CFI_CMDSET_INTEL_STANDARD:
+ /*
+ * Set flash to read-id mode. Otherwise
+ * reading protected status is not
+ * guaranteed.
+ */
+ flash_write_cmd(info, sect_cnt, 0,
+ FLASH_CMD_READ_ID);
info->protect[sect_cnt] =
flash_isset (info, sect_cnt,
FLASH_OFFSET_PROTECT,
return (info->size);
}
+#ifdef CONFIG_FLASH_CFI_MTD
void flash_set_verbose(uint v)
{
flash_verbose = v;
}
+#endif
+
+static void cfi_flash_set_config_reg(u32 base, u16 val)
+{
+#ifdef CONFIG_SYS_CFI_FLASH_CONFIG_REGS
+ /*
+ * Only set this config register if really defined
+ * to a valid value (0xffff is invalid)
+ */
+ if (val == 0xffff)
+ return;
+
+ /*
+ * Set configuration register. Data is "encrypted" in the 16 lower
+ * address bits.
+ */
+ flash_write16(FLASH_CMD_SETUP, (void *)(base + (val << 1)));
+ flash_write16(FLASH_CMD_SET_CR_CONFIRM, (void *)(base + (val << 1)));
+
+ /*
+ * Finally issue reset-command to bring device back to
+ * read-array mode
+ */
+ flash_write16(FLASH_CMD_RESET, (void *)base);
+#endif
+}
/*-----------------------------------------------------------------------
*/
-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 %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
+}
+
+unsigned long flash_init (void)
+{
+ unsigned long size = 0;
+ int i;
+
#ifdef CONFIG_SYS_FLASH_PROTECTION
/* read environment from EEPROM */
char s[64];
for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
flash_info[i].flash_id = FLASH_UNKNOWN;
+ /* Optionally write flash configuration register */
+ cfi_flash_set_config_reg(cfi_flash_bank_addr(i),
+ cfi_flash_config_reg(i));
+
if (!flash_detect_legacy(cfi_flash_bank_addr(i), i))
- flash_get_size(cfi_flash_bank_addr(i), i,
- cfi_flash_bank_size(i));
+ flash_get_size(cfi_flash_bank_addr(i), i);
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