#define CMD_M25PXX_DP 0xb9 /* Deep Power-down */
#define CMD_M25PXX_RES 0xab /* Release from DP, and Read Signature */
+#define STM_ID_M25P10 0x11
#define STM_ID_M25P16 0x15
#define STM_ID_M25P20 0x12
#define STM_ID_M25P32 0x16
#define STM_ID_M25P80 0x14
#define STM_ID_M25P128 0x18
-#define STMICRO_SR_WIP (1 << 0) /* Write-in-Progress */
-
struct stmicro_spi_flash_params {
u8 idcode1;
u16 page_size;
}
static const struct stmicro_spi_flash_params stmicro_spi_flash_table[] = {
+ {
+ .idcode1 = STM_ID_M25P10,
+ .page_size = 256,
+ .pages_per_sector = 128,
+ .nr_sectors = 4,
+ .name = "M25P10",
+ },
{
.idcode1 = STM_ID_M25P16,
.page_size = 256,
},
};
-static int stmicro_wait_ready(struct spi_flash *flash, unsigned long timeout)
-{
- struct spi_slave *spi = flash->spi;
- unsigned long timebase;
- int ret;
- u8 cmd = CMD_M25PXX_RDSR;
- u8 status;
-
- ret = spi_xfer(spi, 8, &cmd, NULL, SPI_XFER_BEGIN);
- if (ret) {
- debug("SF: Failed to send command %02x: %d\n", cmd, ret);
- return ret;
- }
-
- timebase = get_timer(0);
- do {
- ret = spi_xfer(spi, 8, NULL, &status, 0);
- if (ret)
- return -1;
-
- if ((status & STMICRO_SR_WIP) == 0)
- break;
-
- } while (get_timer(timebase) < timeout);
-
- spi_xfer(spi, 0, NULL, NULL, SPI_XFER_END);
-
- if ((status & STMICRO_SR_WIP) == 0)
- return 0;
-
- /* Timed out */
- return -1;
-}
-
-static int stmicro_read_fast(struct spi_flash *flash,
- u32 offset, size_t len, void *buf)
-{
- struct stmicro_spi_flash *stm = to_stmicro_spi_flash(flash);
- unsigned long page_addr;
- unsigned long page_size;
- u8 cmd[5];
-
- page_size = stm->params->page_size;
- page_addr = offset / page_size;
-
- cmd[0] = CMD_READ_ARRAY_FAST;
- cmd[1] = page_addr >> 8;
- cmd[2] = page_addr;
- cmd[3] = offset % page_size;
- cmd[4] = 0x00;
-
- return spi_flash_read_common(flash, cmd, sizeof(cmd), buf, len);
-}
-
static int stmicro_write(struct spi_flash *flash,
u32 offset, size_t len, const void *buf)
{
break;
}
- ret = stmicro_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT);
- if (ret < 0) {
- debug("SF: STMicro page programming timed out\n");
+ ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT);
+ if (ret)
break;
- }
page_addr++;
byte_addr = 0;
int stmicro_erase(struct spi_flash *flash, u32 offset, size_t len)
{
- struct stmicro_spi_flash *stm = to_stmicro_spi_flash(flash);
- unsigned long sector_size;
- size_t actual;
- int ret;
- u8 cmd[4];
-
- /*
- * This function currently uses sector erase only.
- * probably speed things up by using bulk erase
- * when possible.
- */
-
- sector_size = stm->params->page_size * stm->params->pages_per_sector;
-
- if (offset % sector_size || len % sector_size) {
- debug("SF: Erase offset/length not multiple of sector size\n");
- return -1;
- }
-
- len /= sector_size;
- cmd[0] = CMD_M25PXX_SE;
- cmd[2] = 0x00;
- cmd[3] = 0x00;
-
- ret = spi_claim_bus(flash->spi);
- if (ret) {
- debug("SF: Unable to claim SPI bus\n");
- return ret;
- }
-
- ret = 0;
- for (actual = 0; actual < len; actual++) {
- cmd[1] = offset >> 16;
- offset += sector_size;
-
- ret = spi_flash_cmd(flash->spi, CMD_M25PXX_WREN, NULL, 0);
- if (ret < 0) {
- debug("SF: Enabling Write failed\n");
- break;
- }
-
- ret = spi_flash_cmd_write(flash->spi, cmd, 4, NULL, 0);
- if (ret < 0) {
- debug("SF: STMicro page erase failed\n");
- break;
- }
-
- ret = stmicro_wait_ready(flash, SPI_FLASH_PAGE_ERASE_TIMEOUT);
- if (ret < 0) {
- debug("SF: STMicro page erase timed out\n");
- break;
- }
- }
-
- debug("SF: STMicro: Successfully erased %u bytes @ 0x%x\n",
- len * sector_size, offset);
-
- spi_release_bus(flash->spi);
- return ret;
+ return spi_flash_cmd_erase(flash, CMD_M25PXX_SE, offset, len);
}
struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 * idcode)
struct stmicro_spi_flash *stm;
unsigned int i;
+ if (idcode[0] == 0xff) {
+ i = spi_flash_cmd(spi, CMD_M25PXX_RES,
+ idcode, 4);
+ if (i)
+ return NULL;
+ if ((idcode[3] & 0xf0) == 0x10) {
+ idcode[0] = 0x20;
+ idcode[1] = 0x20;
+ idcode[2] = idcode[3] + 1;
+ } else
+ return NULL;
+ }
+
for (i = 0; i < ARRAY_SIZE(stmicro_spi_flash_table); i++) {
params = &stmicro_spi_flash_table[i];
if (params->idcode1 == idcode[2]) {
stm->flash.write = stmicro_write;
stm->flash.erase = stmicro_erase;
- stm->flash.read = stmicro_read_fast;
- stm->flash.size = params->page_size * params->pages_per_sector
- * params->nr_sectors;
-
- debug("SF: Detected %s with page size %u, total %u bytes\n",
- params->name, params->page_size, stm->flash.size);
+ stm->flash.read = spi_flash_cmd_read_fast;
+ stm->flash.sector_size = params->page_size * params->pages_per_sector;
+ stm->flash.size = stm->flash.sector_size * params->nr_sectors;
return &stm->flash;
}
projects / u-boot / blobdiff