diff options
Diffstat (limited to 'drivers/mtd/spi/sf_ops.c')
| -rw-r--r-- | drivers/mtd/spi/sf_ops.c | 157 |
1 files changed, 128 insertions, 29 deletions
diff --git a/drivers/mtd/spi/sf_ops.c b/drivers/mtd/spi/sf_ops.c index e316a692a8..1f1bb36065 100644 --- a/drivers/mtd/spi/sf_ops.c +++ b/drivers/mtd/spi/sf_ops.c @@ -9,6 +9,7 @@ */ #include <common.h> +#include <malloc.h> #include <spi.h> #include <spi_flash.h> #include <watchdog.h> @@ -23,13 +24,28 @@ static void spi_flash_addr(u32 addr, u8 *cmd) cmd[3] = addr >> 0; } -int spi_flash_cmd_write_status(struct spi_flash *flash, u8 sr) +int spi_flash_cmd_read_status(struct spi_flash *flash, u8 *rs) +{ + int ret; + u8 cmd; + + cmd = CMD_READ_STATUS; + ret = spi_flash_read_common(flash, &cmd, 1, rs, 1); + if (ret < 0) { + debug("SF: fail to read status register\n"); + return ret; + } + + return 0; +} + +int spi_flash_cmd_write_status(struct spi_flash *flash, u8 ws) { u8 cmd; int ret; cmd = CMD_WRITE_STATUS; - ret = spi_flash_write_common(flash, &cmd, 1, &sr, 1); + ret = spi_flash_write_common(flash, &cmd, 1, &ws, 1); if (ret < 0) { debug("SF: fail to write status register\n"); return ret; @@ -38,6 +54,44 @@ int spi_flash_cmd_write_status(struct spi_flash *flash, u8 sr) return 0; } +#if defined(CONFIG_SPI_FLASH_SPANSION) || defined(CONFIG_SPI_FLASH_WINBOND) +int spi_flash_cmd_read_config(struct spi_flash *flash, u8 *rc) +{ + int ret; + u8 cmd; + + cmd = CMD_READ_CONFIG; + ret = spi_flash_read_common(flash, &cmd, 1, rc, 1); + if (ret < 0) { + debug("SF: fail to read config register\n"); + return ret; + } + + return 0; +} + +int spi_flash_cmd_write_config(struct spi_flash *flash, u8 wc) +{ + u8 data[2]; + u8 cmd; + int ret; + + ret = spi_flash_cmd_read_status(flash, &data[0]); + if (ret < 0) + return ret; + + cmd = CMD_WRITE_STATUS; + data[1] = wc; + ret = spi_flash_write_common(flash, &cmd, 1, &data, 2); + if (ret) { + debug("SF: fail to write config register\n"); + return ret; + } + + return 0; +} +#endif + #ifdef CONFIG_SPI_FLASH_BAR static int spi_flash_cmd_bankaddr_write(struct spi_flash *flash, u8 bank_sel) { @@ -65,7 +119,7 @@ static int spi_flash_bank(struct spi_flash *flash, u32 offset) u8 bank_sel; int ret; - bank_sel = offset / SPI_FLASH_16MB_BOUN; + bank_sel = offset / (SPI_FLASH_16MB_BOUN << flash->shift); ret = spi_flash_cmd_bankaddr_write(flash, bank_sel); if (ret) { @@ -73,7 +127,29 @@ static int spi_flash_bank(struct spi_flash *flash, u32 offset) return ret; } - return 0; + return bank_sel; +} +#endif + +#ifdef CONFIG_SF_DUAL_FLASH +static void spi_flash_dual_flash(struct spi_flash *flash, u32 *addr) +{ + switch (flash->dual_flash) { + case SF_DUAL_STACKED_FLASH: + if (*addr >= (flash->size >> 1)) { + *addr -= flash->size >> 1; + flash->spi->flags |= SPI_XFER_U_PAGE; + } else { + flash->spi->flags &= ~SPI_XFER_U_PAGE; + } + break; + case SF_DUAL_PARALLEL_FLASH: + *addr >>= flash->shift; + break; + default: + debug("SF: Unsupported dual_flash=%d\n", flash->dual_flash); + break; + } } #endif @@ -81,6 +157,7 @@ int spi_flash_cmd_wait_ready(struct spi_flash *flash, unsigned long timeout) { struct spi_slave *spi = flash->spi; unsigned long timebase; + unsigned long flags = SPI_XFER_BEGIN; int ret; u8 status; u8 check_status = 0x0; @@ -92,7 +169,11 @@ int spi_flash_cmd_wait_ready(struct spi_flash *flash, unsigned long timeout) check_status = poll_bit; } - ret = spi_xfer(spi, 8, &cmd, NULL, SPI_XFER_BEGIN); +#ifdef CONFIG_SF_DUAL_FLASH + if (spi->flags & SPI_XFER_U_PAGE) + flags |= SPI_XFER_U_PAGE; +#endif + ret = spi_xfer(spi, 8, &cmd, NULL, flags); if (ret) { debug("SF: fail to read %s status register\n", cmd == CMD_READ_STATUS ? "read" : "flag"); @@ -165,8 +246,8 @@ int spi_flash_write_common(struct spi_flash *flash, const u8 *cmd, int spi_flash_cmd_erase_ops(struct spi_flash *flash, u32 offset, size_t len) { - u32 erase_size; - u8 cmd[4]; + u32 erase_size, erase_addr; + u8 cmd[SPI_FLASH_CMD_LEN]; int ret = -1; erase_size = flash->erase_size; @@ -177,15 +258,21 @@ int spi_flash_cmd_erase_ops(struct spi_flash *flash, u32 offset, size_t len) cmd[0] = flash->erase_cmd; while (len) { + erase_addr = offset; + +#ifdef CONFIG_SF_DUAL_FLASH + if (flash->dual_flash > SF_SINGLE_FLASH) + spi_flash_dual_flash(flash, &erase_addr); +#endif #ifdef CONFIG_SPI_FLASH_BAR - ret = spi_flash_bank(flash, offset); + ret = spi_flash_bank(flash, erase_addr); if (ret < 0) return ret; #endif - spi_flash_addr(offset, cmd); + spi_flash_addr(erase_addr, cmd); debug("SF: erase %2x %2x %2x %2x (%x)\n", cmd[0], cmd[1], - cmd[2], cmd[3], offset); + cmd[2], cmd[3], erase_addr); ret = spi_flash_write_common(flash, cmd, sizeof(cmd), NULL, 0); if (ret < 0) { @@ -204,16 +291,23 @@ int spi_flash_cmd_write_ops(struct spi_flash *flash, u32 offset, size_t len, const void *buf) { unsigned long byte_addr, page_size; + u32 write_addr; size_t chunk_len, actual; - u8 cmd[4]; + u8 cmd[SPI_FLASH_CMD_LEN]; int ret = -1; page_size = flash->page_size; - cmd[0] = CMD_PAGE_PROGRAM; + cmd[0] = flash->write_cmd; for (actual = 0; actual < len; actual += chunk_len) { + write_addr = offset; + +#ifdef CONFIG_SF_DUAL_FLASH + if (flash->dual_flash > SF_SINGLE_FLASH) + spi_flash_dual_flash(flash, &write_addr); +#endif #ifdef CONFIG_SPI_FLASH_BAR - ret = spi_flash_bank(flash, offset); + ret = spi_flash_bank(flash, write_addr); if (ret < 0) return ret; #endif @@ -223,9 +317,9 @@ int spi_flash_cmd_write_ops(struct spi_flash *flash, u32 offset, if (flash->spi->max_write_size) chunk_len = min(chunk_len, flash->spi->max_write_size); - spi_flash_addr(offset, cmd); + spi_flash_addr(write_addr, cmd); - debug("PP: 0x%p => cmd = { 0x%02x 0x%02x%02x%02x } chunk_len = %zu\n", + debug("SF: 0x%p => cmd = { 0x%02x 0x%02x%02x%02x } chunk_len = %zu\n", buf + actual, cmd[0], cmd[1], cmd[2], cmd[3], chunk_len); ret = spi_flash_write_common(flash, cmd, sizeof(cmd), @@ -267,8 +361,9 @@ int spi_flash_read_common(struct spi_flash *flash, const u8 *cmd, int spi_flash_cmd_read_ops(struct spi_flash *flash, u32 offset, size_t len, void *data) { - u8 cmd[5], bank_sel = 0; - u32 remain_len, read_len; + u8 *cmd, cmdsz; + u32 remain_len, read_len, read_addr; + int bank_sel = 0; int ret = -1; /* Handle memory-mapped SPI */ @@ -285,29 +380,33 @@ int spi_flash_cmd_read_ops(struct spi_flash *flash, u32 offset, return 0; } - cmd[0] = CMD_READ_ARRAY_FAST; - cmd[4] = 0x00; + cmdsz = SPI_FLASH_CMD_LEN + flash->dummy_byte; + cmd = malloc(cmdsz); + memset(cmd, 0, cmdsz); + cmd[0] = flash->read_cmd; while (len) { -#ifdef CONFIG_SPI_FLASH_BAR - bank_sel = offset / SPI_FLASH_16MB_BOUN; + read_addr = offset; - ret = spi_flash_cmd_bankaddr_write(flash, bank_sel); - if (ret) { - debug("SF: fail to set bank%d\n", bank_sel); +#ifdef CONFIG_SF_DUAL_FLASH + if (flash->dual_flash > SF_SINGLE_FLASH) + spi_flash_dual_flash(flash, &read_addr); +#endif +#ifdef CONFIG_SPI_FLASH_BAR + bank_sel = spi_flash_bank(flash, read_addr); + if (bank_sel < 0) return ret; - } #endif - remain_len = (SPI_FLASH_16MB_BOUN * (bank_sel + 1)) - offset; + remain_len = ((SPI_FLASH_16MB_BOUN << flash->shift) * + (bank_sel + 1)) - offset; if (len < remain_len) read_len = len; else read_len = remain_len; - spi_flash_addr(offset, cmd); + spi_flash_addr(read_addr, cmd); - ret = spi_flash_read_common(flash, cmd, sizeof(cmd), - data, read_len); + ret = spi_flash_read_common(flash, cmd, cmdsz, data, read_len); if (ret < 0) { debug("SF: read failed\n"); break; |