[U-Boot] [PATCH v4 12/36] sf: probe: Add support for SST_WP
Jagannadha Sutradharudu Teki
jagannadha.sutradharudu-teki at xilinx.com
Tue Sep 24 20:19:49 CEST 2013
Most of the SST flashes needs to write up using SST_WP, AAI
Word Program, so added a flag param on spi_flash_params table.
SST flashes, which supports SST_WP need to use a WP write
sst_write_wp instead of common flash write.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna at xilinx.com>
---
Changes for v4:
- none
Changes for v3:
- none
Changes for v2:
- none
drivers/mtd/spi/spi_flash_internal.h | 5 ++
drivers/mtd/spi/spi_flash_ops.c | 93 ++++++++++++++++++++
drivers/mtd/spi/spi_flash_probe.c | 160 ++++++++++++++++++-----------------
include/spi_flash.h | 7 ++
4 files changed, 188 insertions(+), 77 deletions(-)
diff --git a/drivers/mtd/spi/spi_flash_internal.h b/drivers/mtd/spi/spi_flash_internal.h
index af1afa9..ce34ce0 100644
--- a/drivers/mtd/spi/spi_flash_internal.h
+++ b/drivers/mtd/spi/spi_flash_internal.h
@@ -75,6 +75,11 @@ int spi_flash_cmd_write(struct spi_slave *spi, const u8 *cmd, size_t cmd_len,
int spi_flash_cmd_write_multi(struct spi_flash *flash, u32 offset,
size_t len, const void *buf);
+#ifdef CONFIG_SPI_FLASH_SST
+int sst_write_wp(struct spi_flash *flash, u32 offset, size_t len,
+ const void *buf);
+#endif
+
/*
* Enable writing on the SPI flash.
*/
diff --git a/drivers/mtd/spi/spi_flash_ops.c b/drivers/mtd/spi/spi_flash_ops.c
index 6133363..79381b1 100644
--- a/drivers/mtd/spi/spi_flash_ops.c
+++ b/drivers/mtd/spi/spi_flash_ops.c
@@ -312,3 +312,96 @@ int spi_flash_cmd_read_fast(struct spi_flash *flash, u32 offset,
return ret;
}
+
+#ifdef CONFIG_SPI_FLASH_SST
+static int sst_byte_write(struct spi_flash *flash, u32 offset, const void *buf)
+{
+ int ret;
+ u8 cmd[4] = {
+ CMD_SST_BP,
+ offset >> 16,
+ offset >> 8,
+ offset,
+ };
+
+ debug("BP[%02x]: 0x%p => cmd = { 0x%02x 0x%06x }\n",
+ spi_w8r8(flash->spi, CMD_READ_STATUS), buf, cmd[0], offset);
+
+ ret = spi_flash_cmd_write_enable(flash);
+ if (ret)
+ return ret;
+
+ ret = spi_flash_cmd_write(flash->spi, cmd, sizeof(cmd), buf, 1);
+ if (ret)
+ return ret;
+
+ return spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT);
+}
+
+int sst_write_wp(struct spi_flash *flash, u32 offset, size_t len,
+ const void *buf)
+{
+ size_t actual, cmd_len;
+ int ret;
+ u8 cmd[4];
+
+ ret = spi_claim_bus(flash->spi);
+ if (ret) {
+ debug("SF: Unable to claim SPI bus\n");
+ return ret;
+ }
+
+ /* If the data is not word aligned, write out leading single byte */
+ actual = offset % 2;
+ if (actual) {
+ ret = sst_byte_write(flash, offset, buf);
+ if (ret)
+ goto done;
+ }
+ offset += actual;
+
+ ret = spi_flash_cmd_write_enable(flash);
+ if (ret)
+ goto done;
+
+ cmd_len = 4;
+ cmd[0] = CMD_SST_AAI_WP;
+ cmd[1] = offset >> 16;
+ cmd[2] = offset >> 8;
+ cmd[3] = offset;
+
+ for (; actual < len - 1; actual += 2) {
+ debug("WP[%02x]: 0x%p => cmd = { 0x%02x 0x%06x }\n",
+ spi_w8r8(flash->spi, CMD_READ_STATUS), buf + actual,
+ cmd[0], offset);
+
+ ret = spi_flash_cmd_write(flash->spi, cmd, cmd_len,
+ buf + actual, 2);
+ if (ret) {
+ debug("SF: sst word program failed\n");
+ break;
+ }
+
+ ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT);
+ if (ret)
+ break;
+
+ cmd_len = 1;
+ offset += 2;
+ }
+
+ if (!ret)
+ ret = spi_flash_cmd_write_disable(flash);
+
+ /* If there is a single trailing byte, write it out */
+ if (!ret && actual != len)
+ ret = sst_byte_write(flash, offset, buf + actual);
+
+ done:
+ debug("SF: sst: program %s %zu bytes @ 0x%zx\n",
+ ret ? "failure" : "success", len, offset - actual);
+
+ spi_release_bus(flash->spi);
+ return ret;
+}
+#endif
diff --git a/drivers/mtd/spi/spi_flash_probe.c b/drivers/mtd/spi/spi_flash_probe.c
index f4aa446..da43fda 100644
--- a/drivers/mtd/spi/spi_flash_probe.c
+++ b/drivers/mtd/spi/spi_flash_probe.c
@@ -26,6 +26,7 @@ DECLARE_GLOBAL_DATA_PTR;
* @ext_jedec: Device ext_jedec ID
* @sector_size: Sector size of this device
* @nr_sectors: No.of sectors on this device
+ * @flags: Importent param, for flash specific behaviour
*/
struct spi_flash_params {
const char *name;
@@ -33,101 +34,102 @@ struct spi_flash_params {
u16 ext_jedec;
u32 sector_size;
u32 nr_sectors;
+ u16 flags;
};
static const struct spi_flash_params spi_flash_params_table[] = {
#ifdef CONFIG_SPI_FLASH_ATMEL /* ATMEL */
- {"AT45DB011D", 0x1f2200, 0x0, 64 * 1024, 4},
- {"AT45DB021D", 0x1f2300, 0x0, 64 * 1024, 8},
- {"AT45DB041D", 0x1f2400, 0x0, 64 * 1024, 8},
- {"AT45DB081D", 0x1f2500, 0x0, 64 * 1024, 16},
- {"AT45DB161D", 0x1f2600, 0x0, 64 * 1024, 32},
- {"AT45DB321D", 0x1f2700, 0x0, 64 * 1024, 64},
- {"AT45DB641D", 0x1f2800, 0x0, 64 * 1024, 128},
+ {"AT45DB011D", 0x1f2200, 0x0, 64 * 1024, 4, 0},
+ {"AT45DB021D", 0x1f2300, 0x0, 64 * 1024, 8, 0},
+ {"AT45DB041D", 0x1f2400, 0x0, 64 * 1024, 8, 0},
+ {"AT45DB081D", 0x1f2500, 0x0, 64 * 1024, 16, 0},
+ {"AT45DB161D", 0x1f2600, 0x0, 64 * 1024, 32, 0},
+ {"AT45DB321D", 0x1f2700, 0x0, 64 * 1024, 64, 0},
+ {"AT45DB641D", 0x1f2800, 0x0, 64 * 1024, 128, 0},
#endif
#ifdef CONFIG_SPI_FLASH_EON /* EON */
- {"EN25Q32B", 0x1c3016, 0x0, 64 * 1024, 64},
- {"EN25Q128B", 0x1c3018, 0x0, 64 * 1024, 256},
+ {"EN25Q32B", 0x1c3016, 0x0, 64 * 1024, 64, 0},
+ {"EN25Q128B", 0x1c3018, 0x0, 64 * 1024, 256, 0},
#endif
#ifdef CONFIG_SPI_FLASH_GIGADEVICE /* GIGADEVICE */
- {"GD25Q64B", 0xc84017, 0x0, 64 * 1024, 128},
- {"GD25LQ32", 0xc86016, 0x0, 64 * 1024, 64},
+ {"GD25Q64B", 0xc84017, 0x0, 64 * 1024, 128, 0},
+ {"GD25LQ32", 0xc86016, 0x0, 64 * 1024, 64, 0},
#endif
#ifdef CONFIG_SPI_FLASH_MACRONIX /* MACRONIX */
- {"MX25L4005", 0xc22013, 0x0, 64 * 1024, 8},
- {"MX25L8005", 0xc22014, 0x0, 64 * 1024, 16},
- {"MX25L1605D", 0xc22015, 0x0, 64 * 1024, 32},
- {"MX25L3205D", 0xc22016, 0x0, 64 * 1024, 64},
- {"MX25L6405D", 0xc22017, 0x0, 64 * 1024, 128},
- {"MX25L12805", 0xc22018, 0x0, 64 * 1024, 256},
- {"MX25L12855E", 0xc22618, 0x0, 64 * 1024, 256},
+ {"MX25L4005", 0xc22013, 0x0, 64 * 1024, 8, 0},
+ {"MX25L8005", 0xc22014, 0x0, 64 * 1024, 16, 0},
+ {"MX25L1605D", 0xc22015, 0x0, 64 * 1024, 32, 0},
+ {"MX25L3205D", 0xc22016, 0x0, 64 * 1024, 64, 0},
+ {"MX25L6405D", 0xc22017, 0x0, 64 * 1024, 128, 0},
+ {"MX25L12805", 0xc22018, 0x0, 64 * 1024, 256, 0},
+ {"MX25L12855E", 0xc22618, 0x0, 64 * 1024, 256, 0},
#endif
#ifdef CONFIG_SPI_FLASH_SPANSION /* SPANSION */
- {"S25FL008A", 0x010213, 0x0, 64 * 1024, 16},
- {"S25FL016A", 0x010214, 0x0, 64 * 1024, 32},
- {"S25FL032A", 0x010215, 0x0, 64 * 1024, 64},
- {"S25FL064A", 0x010216, 0x0, 64 * 1024, 128},
- {"S25FL128P_256K", 0x012018, 0x0300, 256 * 1024, 64},
- {"S25FL128P_64K", 0x012018, 0x0301, 64 * 1024, 256},
- {"S25FL032P", 0x010215, 0x4d00, 64 * 1024, 64},
- {"S25FL064P", 0x010216, 0x4d00, 64 * 1024, 128},
- {"S25FL128S_64K", 0x012018, 0x4d01, 64 * 1024, 256},
- {"S25FL256S_64K", 0x010219, 0x4d01, 64 * 1024, 512},
- {"S25FL512S_64K", 0x010220, 0x4d01, 64 * 1024, 1024},
+ {"S25FL008A", 0x010213, 0x0, 64 * 1024, 16, 0},
+ {"S25FL016A", 0x010214, 0x0, 64 * 1024, 32, 0},
+ {"S25FL032A", 0x010215, 0x0, 64 * 1024, 64, 0},
+ {"S25FL064A", 0x010216, 0x0, 64 * 1024, 128, 0},
+ {"S25FL128P_256K", 0x012018, 0x0300, 256 * 1024, 64, 0},
+ {"S25FL128P_64K", 0x012018, 0x0301, 64 * 1024, 256, 0},
+ {"S25FL032P", 0x010215, 0x4d00, 64 * 1024, 64, 0},
+ {"S25FL064P", 0x010216, 0x4d00, 64 * 1024, 128, 0},
+ {"S25FL128S_64K", 0x012018, 0x4d01, 64 * 1024, 256, 0},
+ {"S25FL256S_64K", 0x010219, 0x4d01, 64 * 1024, 512, 0},
+ {"S25FL512S_64K", 0x010220, 0x4d01, 64 * 1024, 1024, 0},
#endif
#ifdef CONFIG_SPI_FLASH_STMICRO /* STMICRO */
- {"M25P10", 0x202011, 0x0, 32 * 1024, 4},
- {"M25P20", 0x202012, 0x0, 64 * 1024, 4},
- {"M25P40", 0x202013, 0x0, 64 * 1024, 8},
- {"M25P80", 0x202014, 0x0, 64 * 1024, 16},
- {"M25P16", 0x202015, 0x0, 64 * 1024, 32},
- {"M25P32", 0x202016, 0x0, 64 * 1024, 64},
- {"M25P64", 0x202017, 0x0, 64 * 1024, 128},
- {"M25P128", 0x202018, 0x0, 256 * 1024, 64},
- {"N25Q32", 0x20ba16, 0x0, 64 * 1024, 64},
- {"N25Q32A", 0x20bb16, 0x0, 64 * 1024, 64},
- {"N25Q64", 0x20ba17, 0x0, 64 * 1024, 128},
- {"N25Q64A", 0x20bb17, 0x0, 64 * 1024, 128},
- {"N25Q128", 0x20ba18, 0x0, 64 * 1024, 256},
- {"N25Q128A", 0x20bb18, 0x0, 64 * 1024, 256},
- {"N25Q256", 0x20ba19, 0x0, 64 * 1024, 512},
- {"N25Q256A", 0x20bb19, 0x0, 64 * 1024, 512},
- {"N25Q512", 0x20ba20, 0x0, 64 * 1024, 1024},
- {"N25Q512A", 0x20bb20, 0x0, 64 * 1024, 1024},
- {"N25Q1024", 0x20ba21, 0x0, 64 * 1024, 2048},
- {"N25Q1024A", 0x20bb21, 0x0, 64 * 1024, 2048},
+ {"M25P10", 0x202011, 0x0, 32 * 1024, 4, 0},
+ {"M25P20", 0x202012, 0x0, 64 * 1024, 4, 0},
+ {"M25P40", 0x202013, 0x0, 64 * 1024, 8, 0},
+ {"M25P80", 0x202014, 0x0, 64 * 1024, 16, 0},
+ {"M25P16", 0x202015, 0x0, 64 * 1024, 32, 0},
+ {"M25P32", 0x202016, 0x0, 64 * 1024, 64, 0},
+ {"M25P64", 0x202017, 0x0, 64 * 1024, 128, 0},
+ {"M25P128", 0x202018, 0x0, 256 * 1024, 64, 0},
+ {"N25Q32", 0x20ba16, 0x0, 64 * 1024, 64, 0},
+ {"N25Q32A", 0x20bb16, 0x0, 64 * 1024, 64, 0},
+ {"N25Q64", 0x20ba17, 0x0, 64 * 1024, 128, 0},
+ {"N25Q64A", 0x20bb17, 0x0, 64 * 1024, 128, 0},
+ {"N25Q128", 0x20ba18, 0x0, 64 * 1024, 256, 0},
+ {"N25Q128A", 0x20bb18, 0x0, 64 * 1024, 256, 0},
+ {"N25Q256", 0x20ba19, 0x0, 64 * 1024, 512, 0},
+ {"N25Q256A", 0x20bb19, 0x0, 64 * 1024, 512, 0},
+ {"N25Q512", 0x20ba20, 0x0, 64 * 1024, 1024, 0},
+ {"N25Q512A", 0x20bb20, 0x0, 64 * 1024, 1024, 0},
+ {"N25Q1024", 0x20ba21, 0x0, 64 * 1024, 2048, 0},
+ {"N25Q1024A", 0x20bb21, 0x0, 64 * 1024, 2048, 0},
#endif
#ifdef CONFIG_SPI_FLASH_SST /* SST */
- {"SST25VF040B", 0xbf258d, 0x0, 64 * 1024, 8},
- {"SST25VF080B", 0xbf258e, 0x0, 64 * 1024, 16},
- {"SST25VF016B", 0xbf2541, 0x0, 64 * 1024, 32},
- {"SST25VF032B", 0xbf254a, 0x0, 64 * 1024, 64},
- {"SST25VF064C", 0xbf254b, 0x0, 64 * 1024, 128},
- {"SST25WF512", 0xbf2501, 0x0, 64 * 1024, 1},
- {"SST25WF010", 0xbf2502, 0x0, 64 * 1024, 2},
- {"SST25WF020", 0xbf2503, 0x0, 64 * 1024, 4},
- {"SST25WF040", 0xbf2504, 0x0, 64 * 1024, 8},
- {"SST25WF080", 0xbf2505, 0x0, 64 * 1024, 16},
+ {"SST25VF040B", 0xbf258d, 0x0, 64 * 1024, 8, SST_WP},
+ {"SST25VF080B", 0xbf258e, 0x0, 64 * 1024, 16, SST_WP},
+ {"SST25VF016B", 0xbf2541, 0x0, 64 * 1024, 32, SST_WP},
+ {"SST25VF032B", 0xbf254a, 0x0, 64 * 1024, 64, SST_WP},
+ {"SST25VF064C", 0xbf254b, 0x0, 64 * 1024, 128, 0},
+ {"SST25WF512", 0xbf2501, 0x0, 64 * 1024, 1, SST_WP},
+ {"SST25WF010", 0xbf2502, 0x0, 64 * 1024, 2, SST_WP},
+ {"SST25WF020", 0xbf2503, 0x0, 64 * 1024, 4, SST_WP},
+ {"SST25WF040", 0xbf2504, 0x0, 64 * 1024, 8, SST_WP},
+ {"SST25WF080", 0xbf2505, 0x0, 64 * 1024, 16, SST_WP},
#endif
#ifdef CONFIG_SPI_FLASH_WINBOND /* WINBOND */
- {"W25P80", 0xef2014, 0x0, 64 * 1024, 16},
- {"W25P16", 0xef2015, 0x0, 64 * 1024, 32},
- {"W25P32", 0xef2016, 0x0, 64 * 1024, 64},
- {"W25X40", 0xef3013, 0x0, 4 * 1024, 128},
- {"W25X16", 0xef3015, 0x0, 4 * 1024, 512},
- {"W25X32", 0xef3016, 0x0, 4 * 1024, 1024},
- {"W25X64", 0xef3017, 0x0, 4 * 1024, 2048},
- {"W25Q80BL", 0xef4014, 0x0, 4 * 1024, 256},
- {"W25Q16CL", 0xef4015, 0x0, 4 * 1024, 512},
- {"W25Q32BV", 0xef4016, 0x0, 4 * 1024, 1024},
- {"W25Q64CV", 0xef4017, 0x0, 4 * 1024, 2048},
- {"W25Q128BV", 0xef4018, 0x0, 4 * 1024, 4096},
- {"W25Q256", 0xef4019, 0x0, 4 * 1024, 8192},
- {"W25Q80BW", 0xef5014, 0x0, 4 * 1024, 256},
- {"W25Q16DW", 0xef6015, 0x0, 4 * 1024, 512},
- {"W25Q32DW", 0xef6016, 0x0, 4 * 1024, 1024},
- {"W25Q64DW", 0xef6017, 0x0, 4 * 1024, 2048},
- {"W25Q128FW", 0xef6018, 0x0, 4 * 1024, 4096},
+ {"W25P80", 0xef2014, 0x0, 64 * 1024, 16, 0},
+ {"W25P16", 0xef2015, 0x0, 64 * 1024, 32, 0},
+ {"W25P32", 0xef2016, 0x0, 64 * 1024, 64, 0},
+ {"W25X40", 0xef3013, 0x0, 4 * 1024, 128, 0},
+ {"W25X16", 0xef3015, 0x0, 4 * 1024, 512, 0},
+ {"W25X32", 0xef3016, 0x0, 4 * 1024, 1024, 0},
+ {"W25X64", 0xef3017, 0x0, 4 * 1024, 2048, 0},
+ {"W25Q80BL", 0xef4014, 0x0, 4 * 1024, 256, 0},
+ {"W25Q16CL", 0xef4015, 0x0, 4 * 1024, 512, 0},
+ {"W25Q32BV", 0xef4016, 0x0, 4 * 1024, 1024, 0},
+ {"W25Q64CV", 0xef4017, 0x0, 4 * 1024, 2048, 0},
+ {"W25Q128BV", 0xef4018, 0x0, 4 * 1024, 4096, 0},
+ {"W25Q256", 0xef4019, 0x0, 4 * 1024, 8192, 0},
+ {"W25Q80BW", 0xef5014, 0x0, 4 * 1024, 256, 0},
+ {"W25Q16DW", 0xef6015, 0x0, 4 * 1024, 512, 0},
+ {"W25Q32DW", 0xef6016, 0x0, 4 * 1024, 1024, 0},
+ {"W25Q64DW", 0xef6017, 0x0, 4 * 1024, 2048, 0},
+ {"W25Q128FW", 0xef6018, 0x0, 4 * 1024, 4096, 0},
#endif
/*
* Note:
@@ -189,6 +191,10 @@ struct spi_flash *spi_flash_validate_ids(struct spi_slave *spi, u8 *idcode)
/* Assign spi_flash ops */
flash->write = spi_flash_cmd_write_multi;
+#ifdef CONFIG_SPI_FLASH_SST
+ if (params->flags & SST_WP)
+ flash->write = sst_write_wp;
+#endif
flash->erase = spi_flash_cmd_erase;
flash->read = spi_flash_cmd_read_fast;
diff --git a/include/spi_flash.h b/include/spi_flash.h
index bfc59aa..4f35c30 100644
--- a/include/spi_flash.h
+++ b/include/spi_flash.h
@@ -17,6 +17,13 @@
#include <linux/types.h>
#include <linux/compiler.h>
+/* SST specific macros */
+#ifdef CONFIG_SPI_FLASH_SST
+# define SST_WP 0x01 /* Supports AAI word program */
+# define CMD_SST_BP 0x02 /* Byte Program */
+# define CMD_SST_AAI_WP 0xAD /* Auto Address Incr Word Program */
+#endif
+
struct spi_flash {
struct spi_slave *spi;
--
1.8.3
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