diff options
Diffstat (limited to 'package/boot/uboot-lantiq/patches/0005-sf-make-calculatiom-of-address-bytes-completely-conf.patch')
| -rw-r--r-- | package/boot/uboot-lantiq/patches/0005-sf-make-calculatiom-of-address-bytes-completely-conf.patch | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/package/boot/uboot-lantiq/patches/0005-sf-make-calculatiom-of-address-bytes-completely-conf.patch b/package/boot/uboot-lantiq/patches/0005-sf-make-calculatiom-of-address-bytes-completely-conf.patch new file mode 100644 index 0000000..f17aa32 --- /dev/null +++ b/package/boot/uboot-lantiq/patches/0005-sf-make-calculatiom-of-address-bytes-completely-conf.patch @@ -0,0 +1,143 @@ +From 6fb5f86b094756d94de8abe7425e3d290ff22dd2 Mon Sep 17 00:00:00 2001 +From: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> +Date: Sun, 13 Oct 2013 15:09:28 +0200 +Subject: sf: make calculatiom of address bytes completely configurable + +Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> + +diff --git a/drivers/mtd/spi/sf_ops.c b/drivers/mtd/spi/sf_ops.c +index d34747b..207adf5 100644 +--- a/drivers/mtd/spi/sf_ops.c ++++ b/drivers/mtd/spi/sf_ops.c +@@ -15,12 +15,17 @@ + + #include "sf_internal.h" + +-static void spi_flash_addr(u32 addr, u8 *cmd) ++static void spi_flash_addr(const struct spi_flash *flash, u32 addr, u8 *cmd) + { + /* cmd[0] is actual command */ +- cmd[1] = addr >> 16; +- cmd[2] = addr >> 8; +- cmd[3] = addr >> 0; ++ cmd[1] = addr >> (flash->addr_width * 8 - 8); ++ cmd[2] = addr >> (flash->addr_width * 8 - 16); ++ cmd[3] = addr >> (flash->addr_width * 8 - 24); ++} ++ ++static int spi_flash_cmdsz(const struct spi_flash *flash) ++{ ++ return 1 + flash->addr_width; + } + + int spi_flash_cmd_write_status(struct spi_flash *flash, u8 sr) +@@ -158,7 +163,7 @@ 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]; ++ u8 cmd[4], cmd_len; + int ret = -1; + + erase_size = flash->erase_size; +@@ -180,12 +185,13 @@ int spi_flash_cmd_erase_ops(struct spi_flash *flash, u32 offset, size_t len) + if (ret < 0) + goto done; + #endif +- spi_flash_addr(offset, cmd); ++ spi_flash_addr(flash, offset, cmd); ++ cmd_len = spi_flash_cmdsz(flash); + + debug("SF: erase %2x %2x %2x %2x (%x)\n", cmd[0], cmd[1], + cmd[2], cmd[3], offset); + +- ret = spi_flash_write_common(flash, cmd, sizeof(cmd), NULL, 0); ++ ret = spi_flash_write_common(flash, cmd, cmd_len, NULL, 0); + if (ret < 0) { + debug("SF: erase failed\n"); + goto done; +@@ -206,7 +212,7 @@ int spi_flash_cmd_write_ops(struct spi_flash *flash, u32 offset, + { + unsigned long byte_addr, page_size; + size_t chunk_len, actual; +- u8 cmd[4]; ++ u8 cmd[4], cmd_len; + int ret = -1; + + ret = spi_claim_bus(flash->spi); +@@ -230,12 +236,13 @@ 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(flash, offset, cmd); ++ cmd_len = spi_flash_cmdsz(flash); + + debug("PP: 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), ++ ret = spi_flash_write_common(flash, cmd, cmd_len, + buf + actual, chunk_len); + if (ret < 0) { + debug("SF: write failed\n"); +@@ -269,7 +276,7 @@ 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; ++ u8 cmd[5], cmd_len, bank_sel = 0; + u32 remain_len, read_len; + int ret = -1; + +@@ -288,7 +295,6 @@ int spi_flash_cmd_read_ops(struct spi_flash *flash, u32 offset, + } + + cmd[0] = CMD_READ_ARRAY_FAST; +- cmd[4] = 0x00; + + while (len) { + #ifdef CONFIG_SPI_FLASH_BAR +@@ -306,9 +312,11 @@ int spi_flash_cmd_read_ops(struct spi_flash *flash, u32 offset, + else + read_len = remain_len; + +- spi_flash_addr(offset, cmd); ++ spi_flash_addr(flash, offset, cmd); ++ cmd_len = spi_flash_cmdsz(flash); ++ cmd[cmd_len] = 0x00; + +- ret = spi_flash_read_common(flash, cmd, sizeof(cmd), ++ ret = spi_flash_read_common(flash, cmd, cmd_len + 1, + data, read_len); + if (ret < 0) { + debug("SF: read failed\n"); +diff --git a/drivers/mtd/spi/sf_probe.c b/drivers/mtd/spi/sf_probe.c +index 380aa09..84289db 100644 +--- a/drivers/mtd/spi/sf_probe.c ++++ b/drivers/mtd/spi/sf_probe.c +@@ -218,6 +218,9 @@ static int spi_flash_validate_params(struct spi_flash *flash, + flash->poll_cmd = CMD_FLAG_STATUS; + #endif + ++ /* Configure default 3-byte addressing */ ++ flash->addr_width = 3; ++ + /* Configure the BAR - discover bank cmds and read current bank */ + #ifdef CONFIG_SPI_FLASH_BAR + u8 curr_bank = 0; +diff --git a/include/spi_flash.h b/include/spi_flash.h +index 411dd1b..cc9398b 100644 +--- a/include/spi_flash.h ++++ b/include/spi_flash.h +@@ -57,6 +57,7 @@ struct spi_flash { + #endif + u8 poll_cmd; + u8 erase_cmd; ++ u8 addr_width; + + void *memory_map; + int (*read)(struct spi_flash *flash, u32 offset, size_t len, void *buf); +-- +1.8.3.2 + |