#include "spi_flash_internal.h"
-/* MX25xx-specific commands */
-#define CMD_MX25XX_WREN 0x06 /* Write Enable */
-#define CMD_MX25XX_WRDI 0x04 /* Write Disable */
-#define CMD_MX25XX_RDSR 0x05 /* Read Status Register */
-#define CMD_MX25XX_WRSR 0x01 /* Write Status Register */
-#define CMD_MX25XX_READ 0x03 /* Read Data Bytes */
-#define CMD_MX25XX_FAST_READ 0x0b /* Read Data Bytes at Higher Speed */
-#define CMD_MX25XX_PP 0x02 /* Page Program */
-#define CMD_MX25XX_SE 0x20 /* Sector Erase */
-#define CMD_MX25XX_BE 0xD8 /* Block Erase */
-#define CMD_MX25XX_CE 0xc7 /* Chip Erase */
-#define CMD_MX25XX_DP 0xb9 /* Deep Power-down */
-#define CMD_MX25XX_RES 0xab /* Release from DP, and Read Signature */
-
-#define MACRONIX_SR_WIP (1 << 0) /* Write-in-Progress */
-
struct macronix_spi_flash_params {
u16 idcode;
- u16 page_size;
- u16 pages_per_sector;
- u16 sectors_per_block;
u16 nr_blocks;
const char *name;
};
-struct macronix_spi_flash {
- struct spi_flash flash;
- const struct macronix_spi_flash_params *params;
-};
-
-static inline struct macronix_spi_flash *to_macronix_spi_flash(struct spi_flash
- *flash)
-{
- return container_of(flash, struct macronix_spi_flash, flash);
-}
-
static const struct macronix_spi_flash_params macronix_spi_flash_table[] = {
+ {
+ .idcode = 0x2013,
+ .nr_blocks = 8,
+ .name = "MX25L4005",
+ },
+ {
+ .idcode = 0x2014,
+ .nr_blocks = 16,
+ .name = "MX25L8005",
+ },
{
.idcode = 0x2015,
- .page_size = 256,
- .pages_per_sector = 16,
- .sectors_per_block = 16,
.nr_blocks = 32,
.name = "MX25L1605D",
},
{
.idcode = 0x2016,
- .page_size = 256,
- .pages_per_sector = 16,
- .sectors_per_block = 16,
.nr_blocks = 64,
.name = "MX25L3205D",
},
{
.idcode = 0x2017,
- .page_size = 256,
- .pages_per_sector = 16,
- .sectors_per_block = 16,
.nr_blocks = 128,
.name = "MX25L6405D",
},
{
.idcode = 0x2018,
- .page_size = 256,
- .pages_per_sector = 16,
- .sectors_per_block = 16,
.nr_blocks = 256,
.name = "MX25L12805D",
},
{
.idcode = 0x2618,
- .page_size = 256,
- .pages_per_sector = 16,
- .sectors_per_block = 16,
.nr_blocks = 256,
.name = "MX25L12855E",
},
};
-static int macronix_wait_ready(struct spi_flash *flash, unsigned long timeout)
-{
- struct spi_slave *spi = flash->spi;
- unsigned long timebase;
- int ret;
- u8 status;
- u8 cmd = CMD_MX25XX_RDSR;
-
- 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 & MACRONIX_SR_WIP) == 0)
- break;
-
- } while (get_timer(timebase) < timeout);
-
- spi_xfer(spi, 0, NULL, NULL, SPI_XFER_END);
-
- if ((status & MACRONIX_SR_WIP) == 0)
- return 0;
-
- /* Timed out */
- return -1;
-}
-
-static int macronix_read_fast(struct spi_flash *flash,
- u32 offset, size_t len, void *buf)
-{
- struct macronix_spi_flash *mcx = to_macronix_spi_flash(flash);
- unsigned long page_addr;
- unsigned long page_size;
- u8 cmd[5];
-
- page_size = mcx->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 macronix_write(struct spi_flash *flash,
- u32 offset, size_t len, const void *buf)
-{
- struct macronix_spi_flash *mcx = to_macronix_spi_flash(flash);
- unsigned long page_addr;
- unsigned long byte_addr;
- unsigned long page_size;
- size_t chunk_len;
- size_t actual;
- int ret;
- u8 cmd[4];
-
- page_size = mcx->params->page_size;
- page_addr = offset / page_size;
- byte_addr = offset % page_size;
-
- 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 += chunk_len) {
- chunk_len = min(len - actual, page_size - byte_addr);
-
- cmd[0] = CMD_MX25XX_PP;
- cmd[1] = page_addr >> 8;
- cmd[2] = page_addr;
- cmd[3] = byte_addr;
-
- debug
- ("PP: 0x%p => cmd = { 0x%02x 0x%02x%02x%02x } chunk_len = %d\n",
- buf + actual, cmd[0], cmd[1], cmd[2], cmd[3], chunk_len);
-
- ret = spi_flash_cmd(flash->spi, CMD_MX25XX_WREN, NULL, 0);
- if (ret < 0) {
- debug("SF: Enabling Write failed\n");
- break;
- }
-
- ret = spi_flash_cmd_write(flash->spi, cmd, 4,
- buf + actual, chunk_len);
- if (ret < 0) {
- debug("SF: Macronix Page Program failed\n");
- break;
- }
-
- ret = macronix_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT);
- if (ret < 0) {
- debug("SF: Macronix page programming timed out\n");
- break;
- }
-
- page_addr++;
- byte_addr = 0;
- }
-
- debug("SF: Macronix: Successfully programmed %u bytes @ 0x%x\n",
- len, offset);
-
- spi_release_bus(flash->spi);
- return ret;
-}
-
-int macronix_erase(struct spi_flash *flash, u32 offset, size_t len)
-{
- struct macronix_spi_flash *mcx = to_macronix_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 = mcx->params->page_size * mcx->params->pages_per_sector
- * mcx->params->sectors_per_block;
-
- 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_MX25XX_BE;
- 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 / sector_size) + actual;
-
- ret = spi_flash_cmd(flash->spi, CMD_MX25XX_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: Macronix page erase failed\n");
- break;
- }
-
- ret = macronix_wait_ready(flash, SPI_FLASH_PAGE_ERASE_TIMEOUT);
- if (ret < 0) {
- debug("SF: Macronix page erase timed out\n");
- break;
- }
- }
-
- debug("SF: Macronix: Successfully erased %u bytes @ 0x%x\n",
- len * sector_size, offset);
-
- spi_release_bus(flash->spi);
- return ret;
-}
-
struct spi_flash *spi_flash_probe_macronix(struct spi_slave *spi, u8 *idcode)
{
const struct macronix_spi_flash_params *params;
- struct macronix_spi_flash *mcx;
+ struct spi_flash *flash;
unsigned int i;
u16 id = idcode[2] | idcode[1] << 8;
return NULL;
}
- mcx = malloc(sizeof(*mcx));
- if (!mcx) {
+ flash = malloc(sizeof(*flash));
+ if (!flash) {
debug("SF: Failed to allocate memory\n");
return NULL;
}
- mcx->params = params;
- mcx->flash.spi = spi;
- mcx->flash.name = params->name;
+ flash->spi = spi;
+ flash->name = params->name;
- mcx->flash.write = macronix_write;
- mcx->flash.erase = macronix_erase;
- mcx->flash.read = macronix_read_fast;
- mcx->flash.size = params->page_size * params->pages_per_sector
- * params->sectors_per_block * params->nr_blocks;
+ flash->write = spi_flash_cmd_write_multi;
+ flash->erase = spi_flash_cmd_erase;
+ flash->read = spi_flash_cmd_read_fast;
+ flash->page_size = 256;
+ flash->sector_size = 256 * 16 * 16;
+ flash->size = flash->sector_size * params->nr_blocks;
- printf("SF: Detected %s with page size %u, total %u bytes\n",
- params->name, params->page_size, mcx->flash.size);
+ /* Clear BP# bits for read-only flash */
+ spi_flash_cmd_write_status(flash, 0);
- return &mcx->flash;
+ return flash;
}
projects / karo-tx-uboot.git / blobdiff