/*------------------------------------------------------------------------------*/
void df_recovery(AT91PS_DF pDf)
{
#if (AT91C_SPI_PCS_DATAFLASH == AT91C_SPI_PCS1_DATAFLASH)
/*
* Configure PIOs
*/
const struct pio_desc bp4_pio[] = {
{"BP4", AT91C_PIN_PA(31), 0, PIO_PULLUP, PIO_INPUT},
{(char *)0, 0, 0, PIO_DEFAULT, PIO_PERIPH_A},
};
/*
* Configure the PIO controller
*/
writel((1 << AT91C_ID_PIOA), PMC_PCER + AT91C_BASE_PMC);
pio_setup(bp4_pio);
/*
* If BP4 is pressed during Boot sequence
*/
/*
* Erase NandFlash block 0
*/
if (!pio_get_value(AT91C_PIN_PA(31)))
df_page_erase(pDf, 0);
#endif
}
/*------------------------------------------------------------------------------*/
static void nand_recovery(void)
{
/*
* Configure PIOs
*/
const struct pio_desc bp4_pio[] = {
{"BP4", AT91C_PIN_PA(31), 0, PIO_PULLUP, PIO_INPUT},
{(char *)0, 0, 0, PIO_DEFAULT, PIO_PERIPH_A},
};
/*
* Configure the PIO controller
*/
writel((1 << AT91C_ID_PIOA), PMC_PCER + AT91C_BASE_PMC);
pio_setup(bp4_pio);
/*
* If BP4 is pressed during Boot sequence
*/
/*
* Erase NandFlash block 0
*/
if (!pio_get_value(AT91C_PIN_PA(31)))
AT91F_NandEraseBlock0();
}
static inline int read_wire_bit()
{
return pio_get_value(CONFIG_SYS_ONE_WIRE_PIN);
}
int spi_flash_recovery(struct spi_flash *flash)
{
const struct spi_flash_erase_map *map = &flash->erase_map;
const struct spi_flash_erase_region *cur_region, *region = NULL;
const struct spi_flash_erase_command *cur_erase, *erase = NULL;
int i, ret;
/*
* If Recovery Button is pressed during boot sequence,
* erase dataflash page0
*/
dbg_info("SF: Press the recovery button (%s) to recovery\n",
RECOVERY_BUTTON_NAME);
if ((pio_get_value(CONFIG_SYS_RECOVERY_BUTTON_PIN)) == 0) {
dbg_info("SF: The recovery button (%s) has been pressed,\n",
RECOVERY_BUTTON_NAME);
dbg_info("SF: The page 0 is erasing...\n");
/* Get the erase region for offset 0. */
for (i = 0; i < map->num_regions; i++) {
cur_region = &map->regions[i];
if (!(cur_region->offset & ~SFLASH_CMD_ERASE_MASK)) {
region = cur_region;
break;
}
}
if (!region) {
dbg_info("SF: Can't find erase region for offset 0\n");
return -1;
}
/* Get the smallest erase size of the region. */
for (i = 0; i < SFLASH_CMD_ERASE_MAX; i++) {
cur_erase = &map->commands[i];
if (!(region->offset & (0x1UL << i)))
continue;
if (!erase || erase->size > cur_erase->size)
erase = cur_erase;
}
if (!erase) {
dbg_info("SF: Can't find erase command for offset 0\n");
return -1;
}
/* Erase the smallest sector/block at offset 0. */
ret = spi_flash_erase(flash, 0, erase->size);
if (ret) {
dbg_info("SF: The erasing failed\n");
return ret;
}
dbg_info("SF: The erasing is done\n");
return 0;
}
return -1;
}