diff options
Diffstat (limited to 'package/boot/uboot-lantiq/patches/0005-sf-factor-out-the-flash-address-calculation.patch')
| -rw-r--r-- | package/boot/uboot-lantiq/patches/0005-sf-factor-out-the-flash-address-calculation.patch | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/package/boot/uboot-lantiq/patches/0005-sf-factor-out-the-flash-address-calculation.patch b/package/boot/uboot-lantiq/patches/0005-sf-factor-out-the-flash-address-calculation.patch new file mode 100644 index 0000000..356db59 --- /dev/null +++ b/package/boot/uboot-lantiq/patches/0005-sf-factor-out-the-flash-address-calculation.patch @@ -0,0 +1,107 @@ +From acb2721e1cd2e7488a7b08a4ed590177369a1689 Mon Sep 17 00:00:00 2001 +From: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> +Date: Tue, 6 Nov 2012 19:10:40 +0100 +Subject: sf: factor out the flash address calculation + +Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> + +--- a/drivers/mtd/spi/spi_flash.c ++++ b/drivers/mtd/spi/spi_flash.c +@@ -15,12 +15,22 @@ + + #include "spi_flash_internal.h" + +-static void spi_flash_addr(u32 addr, u8 *cmd) ++static void spi_flash_addr(struct spi_flash *flash, u32 addr, u8 *cmd, u8 *cmd_len) + { + /* cmd[0] is actual command */ + cmd[1] = addr >> 16; + cmd[2] = addr >> 8; + cmd[3] = addr >> 0; ++ *cmd_len = 4; ++} ++ ++static void spi_flash_page_addr(struct spi_flash *flash, u32 page_addr, u32 byte_addr, u8 *cmd, u8 *cmd_len) ++{ ++ /* cmd[0] is actual command */ ++ cmd[1] = page_addr >> 8; ++ cmd[2] = page_addr >> 0; ++ cmd[3] = byte_addr; ++ *cmd_len = 4; + } + + static int spi_flash_read_write(struct spi_slave *spi, +@@ -71,7 +81,7 @@ int spi_flash_cmd_write_multi(struct spi + unsigned long page_addr, byte_addr, page_size; + size_t chunk_len, actual; + int ret; +- u8 cmd[4]; ++ u8 cmd[4], cmd_len; + + page_size = flash->page_size; + page_addr = offset / page_size; +@@ -87,9 +97,7 @@ int spi_flash_cmd_write_multi(struct spi + for (actual = 0; actual < len; actual += chunk_len) { + chunk_len = min(len - actual, page_size - byte_addr); + +- cmd[1] = page_addr >> 8; +- cmd[2] = page_addr; +- cmd[3] = byte_addr; ++ spi_flash_page_addr(flash, page_addr, byte_addr, cmd, &cmd_len); + + 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); +@@ -100,7 +108,7 @@ int spi_flash_cmd_write_multi(struct spi + break; + } + +- ret = spi_flash_cmd_write(flash->spi, cmd, 4, ++ ret = spi_flash_cmd_write(flash->spi, cmd, cmd_len, + buf + actual, chunk_len); + if (ret < 0) { + debug("SF: write failed\n"); +@@ -138,13 +146,13 @@ int spi_flash_read_common(struct spi_fla + int spi_flash_cmd_read_fast(struct spi_flash *flash, u32 offset, + size_t len, void *data) + { +- u8 cmd[5]; ++ u8 cmd[5], cmd_len; + + cmd[0] = CMD_READ_ARRAY_FAST; +- spi_flash_addr(offset, cmd); +- cmd[4] = 0x00; ++ spi_flash_addr(flash, offset, cmd, &cmd_len); ++ cmd[cmd_len] = 0x00; + +- return spi_flash_read_common(flash, cmd, sizeof(cmd), data, len); ++ return spi_flash_read_common(flash, cmd, cmd_len + 1, data, len); + } + + int spi_flash_cmd_poll_bit(struct spi_flash *flash, unsigned long timeout, +@@ -194,7 +202,7 @@ int spi_flash_cmd_erase(struct spi_flash + { + u32 start, end, erase_size; + int ret; +- u8 cmd[4]; ++ u8 cmd[4], cmd_len; + + erase_size = flash->sector_size; + if (offset % erase_size || len % erase_size) { +@@ -216,7 +224,7 @@ int spi_flash_cmd_erase(struct spi_flash + end = start + len; + + while (offset < end) { +- spi_flash_addr(offset, cmd); ++ spi_flash_addr(flash, offset, cmd, &cmd_len); + offset += erase_size; + + debug("SF: erase %2x %2x %2x %2x (%x)\n", cmd[0], cmd[1], +@@ -226,7 +234,7 @@ int spi_flash_cmd_erase(struct spi_flash + if (ret) + goto out; + +- ret = spi_flash_cmd_write(flash->spi, cmd, sizeof(cmd), NULL, 0); ++ ret = spi_flash_cmd_write(flash->spi, cmd, cmd_len, NULL, 0); + if (ret) + goto out; + |