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03a777c293
Refresh uboot-lantiq patches. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> SVN-Revision: 40546
135 lines
3.9 KiB
Diff
135 lines
3.9 KiB
Diff
From 6fb5f86b094756d94de8abe7425e3d290ff22dd2 Mon Sep 17 00:00:00 2001
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From: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
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Date: Sun, 13 Oct 2013 15:09:28 +0200
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Subject: sf: make calculatiom of address bytes completely configurable
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Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
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--- a/drivers/mtd/spi/sf_ops.c
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+++ b/drivers/mtd/spi/sf_ops.c
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@@ -15,12 +15,17 @@
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#include "sf_internal.h"
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-static void spi_flash_addr(u32 addr, u8 *cmd)
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+static void spi_flash_addr(const struct spi_flash *flash, u32 addr, u8 *cmd)
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{
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/* cmd[0] is actual command */
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- cmd[1] = addr >> 16;
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- cmd[2] = addr >> 8;
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- cmd[3] = addr >> 0;
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+ cmd[1] = addr >> (flash->addr_width * 8 - 8);
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+ cmd[2] = addr >> (flash->addr_width * 8 - 16);
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+ cmd[3] = addr >> (flash->addr_width * 8 - 24);
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+}
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+
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+static int spi_flash_cmdsz(const struct spi_flash *flash)
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+{
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+ return 1 + flash->addr_width;
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}
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int spi_flash_cmd_write_status(struct spi_flash *flash, u8 sr)
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@@ -158,7 +163,7 @@ int spi_flash_write_common(struct spi_fl
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int spi_flash_cmd_erase_ops(struct spi_flash *flash, u32 offset, size_t len)
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{
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u32 erase_size;
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- u8 cmd[4];
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+ u8 cmd[4], cmd_len;
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int ret = -1;
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erase_size = flash->erase_size;
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@@ -180,12 +185,13 @@ int spi_flash_cmd_erase_ops(struct spi_f
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if (ret < 0)
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goto done;
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#endif
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- spi_flash_addr(offset, cmd);
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+ spi_flash_addr(flash, offset, cmd);
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+ cmd_len = spi_flash_cmdsz(flash);
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debug("SF: erase %2x %2x %2x %2x (%x)\n", cmd[0], cmd[1],
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cmd[2], cmd[3], offset);
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- ret = spi_flash_write_common(flash, cmd, sizeof(cmd), NULL, 0);
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+ ret = spi_flash_write_common(flash, cmd, cmd_len, NULL, 0);
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if (ret < 0) {
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debug("SF: erase failed\n");
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goto done;
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@@ -206,7 +212,7 @@ int spi_flash_cmd_write_ops(struct spi_f
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{
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unsigned long byte_addr, page_size;
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size_t chunk_len, actual;
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- u8 cmd[4];
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+ u8 cmd[4], cmd_len;
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int ret = -1;
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ret = spi_claim_bus(flash->spi);
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@@ -230,12 +236,13 @@ int spi_flash_cmd_write_ops(struct spi_f
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if (flash->spi->max_write_size)
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chunk_len = min(chunk_len, flash->spi->max_write_size);
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- spi_flash_addr(offset, cmd);
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+ spi_flash_addr(flash, offset, cmd);
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+ cmd_len = spi_flash_cmdsz(flash);
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debug("PP: 0x%p => cmd = { 0x%02x 0x%02x%02x%02x } chunk_len = %zu\n",
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buf + actual, cmd[0], cmd[1], cmd[2], cmd[3], chunk_len);
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- ret = spi_flash_write_common(flash, cmd, sizeof(cmd),
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+ ret = spi_flash_write_common(flash, cmd, cmd_len,
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buf + actual, chunk_len);
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if (ret < 0) {
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debug("SF: write failed\n");
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@@ -269,7 +276,7 @@ int spi_flash_read_common(struct spi_fla
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int spi_flash_cmd_read_ops(struct spi_flash *flash, u32 offset,
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size_t len, void *data)
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{
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- u8 cmd[5], bank_sel = 0;
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+ u8 cmd[5], cmd_len, bank_sel = 0;
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u32 remain_len, read_len;
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int ret = -1;
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@@ -288,7 +295,6 @@ int spi_flash_cmd_read_ops(struct spi_fl
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}
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cmd[0] = CMD_READ_ARRAY_FAST;
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- cmd[4] = 0x00;
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while (len) {
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#ifdef CONFIG_SPI_FLASH_BAR
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@@ -306,9 +312,11 @@ int spi_flash_cmd_read_ops(struct spi_fl
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else
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read_len = remain_len;
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- spi_flash_addr(offset, cmd);
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+ spi_flash_addr(flash, offset, cmd);
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+ cmd_len = spi_flash_cmdsz(flash);
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+ cmd[cmd_len] = 0x00;
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- ret = spi_flash_read_common(flash, cmd, sizeof(cmd),
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+ ret = spi_flash_read_common(flash, cmd, cmd_len + 1,
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data, read_len);
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if (ret < 0) {
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debug("SF: read failed\n");
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--- a/drivers/mtd/spi/sf_probe.c
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+++ b/drivers/mtd/spi/sf_probe.c
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@@ -218,6 +218,9 @@ static int spi_flash_validate_params(str
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flash->poll_cmd = CMD_FLAG_STATUS;
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#endif
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+ /* Configure default 3-byte addressing */
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+ flash->addr_width = 3;
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+
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/* Configure the BAR - discover bank cmds and read current bank */
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#ifdef CONFIG_SPI_FLASH_BAR
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u8 curr_bank = 0;
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--- a/include/spi_flash.h
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+++ b/include/spi_flash.h
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@@ -57,6 +57,7 @@ struct spi_flash {
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#endif
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u8 poll_cmd;
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u8 erase_cmd;
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+ u8 addr_width;
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void *memory_map;
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int (*read)(struct spi_flash *flash, u32 offset, size_t len, void *buf);
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