#include "spi_flash_internal.h"
-#define CMD_SST_WREN 0x06 /* Write Enable */
-#define CMD_SST_WRDI 0x04 /* Write Disable */
-#define CMD_SST_RDSR 0x05 /* Read Status Register */
-#define CMD_SST_WRSR 0x01 /* Write Status Register */
-#define CMD_SST_READ 0x03 /* Read Data Bytes */
-#define CMD_SST_FAST_READ 0x0b /* Read Data Bytes at Higher Speed */
#define CMD_SST_BP 0x02 /* Byte Program */
#define CMD_SST_AAI_WP 0xAD /* Auto Address Increment Word Program */
-#define CMD_SST_SE 0x20 /* Sector Erase */
#define SST_SR_WIP (1 << 0) /* Write-in-Progress */
#define SST_SR_WEL (1 << 1) /* Write enable */
#define SST_SR_AAI (1 << 6) /* Addressing mode */
#define SST_SR_BPL (1 << 7) /* BP bits lock */
+#define SST_FEAT_WP (1 << 0) /* Supports AAI word program */
+#define SST_FEAT_MBP (1 << 1) /* Supports multibyte program */
+
struct sst_spi_flash_params {
u8 idcode1;
+ u8 flags;
u16 nr_sectors;
const char *name;
};
const struct sst_spi_flash_params *params;
};
-static inline struct sst_spi_flash *to_sst_spi_flash(struct spi_flash *flash)
-{
- return container_of(flash, struct sst_spi_flash, flash);
-}
-
-#define SST_SECTOR_SIZE (4 * 1024)
static const struct sst_spi_flash_params sst_spi_flash_table[] = {
{
.idcode1 = 0x8d,
+ .flags = SST_FEAT_WP,
.nr_sectors = 128,
.name = "SST25VF040B",
},{
.idcode1 = 0x8e,
+ .flags = SST_FEAT_WP,
.nr_sectors = 256,
.name = "SST25VF080B",
},{
.idcode1 = 0x41,
+ .flags = SST_FEAT_WP,
.nr_sectors = 512,
.name = "SST25VF016B",
},{
.idcode1 = 0x4a,
+ .flags = SST_FEAT_WP,
.nr_sectors = 1024,
.name = "SST25VF032B",
+ },{
+ .idcode1 = 0x4b,
+ .flags = SST_FEAT_MBP,
+ .nr_sectors = 2048,
+ .name = "SST25VF064C",
},{
.idcode1 = 0x01,
+ .flags = SST_FEAT_WP,
.nr_sectors = 16,
.name = "SST25WF512",
},{
.idcode1 = 0x02,
+ .flags = SST_FEAT_WP,
.nr_sectors = 32,
.name = "SST25WF010",
},{
.idcode1 = 0x03,
+ .flags = SST_FEAT_WP,
.nr_sectors = 64,
.name = "SST25WF020",
},{
.idcode1 = 0x04,
+ .flags = SST_FEAT_WP,
.nr_sectors = 128,
.name = "SST25WF040",
},
};
-static int
-sst_enable_writing(struct spi_flash *flash)
-{
- int ret = spi_flash_cmd(flash->spi, CMD_SST_WREN, NULL, 0);
- if (ret)
- debug("SF: Enabling Write failed\n");
- return ret;
-}
-
-static int
-sst_disable_writing(struct spi_flash *flash)
-{
- int ret = spi_flash_cmd(flash->spi, CMD_SST_WRDI, NULL, 0);
- if (ret)
- debug("SF: Disabling Write failed\n");
- return ret;
-}
-
static int
sst_byte_write(struct spi_flash *flash, u32 offset, const void *buf)
{
};
debug("BP[%02x]: 0x%p => cmd = { 0x%02x 0x%06x }\n",
- spi_w8r8(flash->spi, CMD_SST_RDSR), buf, cmd[0], offset);
+ spi_w8r8(flash->spi, CMD_READ_STATUS), buf, cmd[0], offset);
- ret = sst_enable_writing(flash);
+ ret = spi_flash_cmd_write_enable(flash);
if (ret)
return ret;
}
static int
-sst_write(struct spi_flash *flash, u32 offset, size_t len, const void *buf)
+sst_write_wp(struct spi_flash *flash, u32 offset, size_t len, const void *buf)
{
size_t actual, cmd_len;
int ret;
}
offset += actual;
- ret = sst_enable_writing(flash);
+ ret = spi_flash_cmd_write_enable(flash);
if (ret)
goto done;
for (; actual < len - 1; actual += 2) {
debug("WP[%02x]: 0x%p => cmd = { 0x%02x 0x%06x }\n",
- spi_w8r8(flash->spi, CMD_SST_RDSR), buf + actual, cmd[0],
+ spi_w8r8(flash->spi, CMD_READ_STATUS), buf + actual, cmd[0],
offset);
ret = spi_flash_cmd_write(flash->spi, cmd, cmd_len,
}
if (!ret)
- ret = sst_disable_writing(flash);
+ ret = spi_flash_cmd_write_disable(flash);
/* If there is a single trailing byte, write it out */
if (!ret && actual != len)
return ret;
}
-int sst_erase(struct spi_flash *flash, u32 offset, size_t len)
-{
- return spi_flash_cmd_erase(flash, CMD_SST_SE, offset, len);
-}
-
-static int
-sst_unlock(struct spi_flash *flash)
-{
- int ret;
- u8 cmd, status;
-
- ret = sst_enable_writing(flash);
- if (ret)
- return ret;
-
- cmd = CMD_SST_WRSR;
- status = 0;
- ret = spi_flash_cmd_write(flash->spi, &cmd, 1, &status, 1);
- if (ret)
- debug("SF: Unable to set status byte\n");
-
- debug("SF: sst: status = %x\n", spi_w8r8(flash->spi, CMD_SST_RDSR));
-
- return ret;
-}
-
struct spi_flash *
spi_flash_probe_sst(struct spi_slave *spi, u8 *idcode)
{
return NULL;
}
- stm = malloc(sizeof(*stm));
+ stm = spi_flash_alloc(struct sst_spi_flash, spi, params->name);
if (!stm) {
debug("SF: Failed to allocate memory\n");
return NULL;
}
stm->params = params;
- stm->flash.spi = spi;
- stm->flash.name = params->name;
- stm->flash.write = sst_write;
- stm->flash.erase = sst_erase;
- stm->flash.sector_size = SST_SECTOR_SIZE;
+ if (stm->params->flags & SST_FEAT_WP)
+ stm->flash.write = sst_write_wp;
+ stm->flash.page_size = 256;
+ stm->flash.sector_size = 4096;
stm->flash.size = stm->flash.sector_size * params->nr_sectors;
/* Flash powers up read-only, so clear BP# bits */
- sst_unlock(&stm->flash);
+ spi_flash_cmd_write_status(&stm->flash, 0);
return &stm->flash;
}
projects / u-boot / blobdiff