diff options
| author | Jagannadha Sutradharudu Teki <jaganna@xilinx.com> | 2013-06-19 15:33:58 +0530 |
|---|---|---|
| committer | Jagannadha Sutradharudu Teki <jaganna@xilinx.com> | 2013-06-23 22:02:50 +0530 |
| commit | 1dcd6d03811d4f30052a5e24377b378867211b05 (patch) | |
| tree | 2d8cac4b1b7bc109c9a039d10b71634f9ff02a53 /drivers/mtd/spi/spi_flash.c | |
| parent | fc207ee4db20ef6e769b0d08dab8b102748acb35 (diff) | |
sf: Add bank addr code in CONFIG_SPI_FLASH_BAR
Defined bank addr code on CONFIG_SPI_FLASH_BAR macro, to reduce the
size for existing boards which has < 16Mbytes SPI flashes.
It's upto user which has provision to use the bank addr code for
flashes which has > 16Mbytes.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/mtd/spi/spi_flash.c')
| -rw-r--r-- | drivers/mtd/spi/spi_flash.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c index 562f6adb58..f05f8f4d9f 100644 --- a/drivers/mtd/spi/spi_flash.c +++ b/drivers/mtd/spi/spi_flash.c @@ -74,7 +74,7 @@ int spi_flash_cmd_write_multi(struct spi_flash *flash, u32 offset, unsigned long page_addr, byte_addr, page_size; size_t chunk_len, actual; int ret; - u8 cmd[4], bank_sel; + u8 cmd[4]; page_size = flash->page_size; @@ -86,6 +86,9 @@ int spi_flash_cmd_write_multi(struct spi_flash *flash, u32 offset, cmd[0] = CMD_PAGE_PROGRAM; for (actual = 0; actual < len; actual += chunk_len) { +#ifdef CONFIG_SPI_FLASH_BAR + u8 bank_sel; + bank_sel = offset / SPI_FLASH_16MB_BOUN; ret = spi_flash_cmd_bankaddr_write(flash, bank_sel); @@ -93,7 +96,7 @@ int spi_flash_cmd_write_multi(struct spi_flash *flash, u32 offset, debug("SF: fail to set bank%d\n", bank_sel); return ret; } - +#endif page_addr = offset / page_size; byte_addr = offset % page_size; chunk_len = min(len - actual, page_size - byte_addr); @@ -148,7 +151,7 @@ int spi_flash_read_common(struct spi_flash *flash, const u8 *cmd, int spi_flash_cmd_read_fast(struct spi_flash *flash, u32 offset, size_t len, void *data) { - u8 cmd[5], bank_sel; + u8 cmd[5], bank_sel = 0; u32 remain_len, read_len; int ret = -1; @@ -162,6 +165,7 @@ int spi_flash_cmd_read_fast(struct spi_flash *flash, u32 offset, cmd[4] = 0x00; while (len) { +#ifdef CONFIG_SPI_FLASH_BAR bank_sel = offset / SPI_FLASH_16MB_BOUN; ret = spi_flash_cmd_bankaddr_write(flash, bank_sel); @@ -169,7 +173,7 @@ int spi_flash_cmd_read_fast(struct spi_flash *flash, u32 offset, debug("SF: fail to set bank%d\n", bank_sel); return ret; } - +#endif remain_len = (SPI_FLASH_16MB_BOUN * (bank_sel + 1) - offset); if (len < remain_len) read_len = len; @@ -240,7 +244,7 @@ int spi_flash_cmd_erase(struct spi_flash *flash, u32 offset, size_t len) { u32 erase_size; int ret; - u8 cmd[4], bank_sel; + u8 cmd[4]; erase_size = flash->sector_size; if (offset % erase_size || len % erase_size) { @@ -260,6 +264,9 @@ int spi_flash_cmd_erase(struct spi_flash *flash, u32 offset, size_t len) cmd[0] = CMD_ERASE_64K; while (len) { +#ifdef CONFIG_SPI_FLASH_BAR + u8 bank_sel; + bank_sel = offset / SPI_FLASH_16MB_BOUN; ret = spi_flash_cmd_bankaddr_write(flash, bank_sel); @@ -267,7 +274,7 @@ int spi_flash_cmd_erase(struct spi_flash *flash, u32 offset, size_t len) debug("SF: fail to set bank%d\n", bank_sel); return ret; } - +#endif spi_flash_addr(offset, cmd); debug("SF: erase %2x %2x %2x %2x (%x)\n", cmd[0], cmd[1], @@ -321,6 +328,7 @@ int spi_flash_cmd_write_status(struct spi_flash *flash, u8 sr) return 0; } +#ifdef CONFIG_SPI_FLASH_BAR int spi_flash_cmd_bankaddr_write(struct spi_flash *flash, u8 bank_sel) { u8 cmd; @@ -389,6 +397,7 @@ int spi_flash_bank_config(struct spi_flash *flash, u8 idcode0) return 0; } +#endif #ifdef CONFIG_OF_CONTROL int spi_flash_decode_fdt(const void *blob, struct spi_flash *flash) @@ -534,10 +543,12 @@ struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs, goto err_manufacturer_probe; } +#ifdef CONFIG_SPI_FLASH_BAR /* Configure the BAR - disover bank cmds and read current bank */ ret = spi_flash_bank_config(flash, *idp); if (ret < 0) goto err_manufacturer_probe; +#endif #ifdef CONFIG_OF_CONTROL if (spi_flash_decode_fdt(gd->fdt_blob, flash)) { |