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authorKyösti Mälkki <kyosti.malkki@gmail.com>2013-08-18 12:44:24 +0300
committerKyösti Mälkki <kyosti.malkki@gmail.com>2013-08-23 05:07:11 +0200
commit1cf85774da278229229fb77891326d645176d24d (patch)
treebed283ed0892e38a145cbe91a23ee91c30c1ce31 /src/drivers/spi
parent93b2bd70ff65a534e91c203c7948deea315675d5 (diff)
downloadcoreboot-1cf85774da278229229fb77891326d645176d24d.tar.xz
SPI: Support STMicro partial page write
Ported from spi/winbond.c. Fixes this error: ICH SPI: Too much to write. Does your SPI chip driver use CONTROLLER_PAGE_LIMIT? Change-Id: I50db8fd1104d3b7d319b278b14f97e3ff9cb6404 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/3877 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
Diffstat (limited to 'src/drivers/spi')
-rw-r--r--src/drivers/spi/stmicro.c26
1 files changed, 12 insertions, 14 deletions
diff --git a/src/drivers/spi/stmicro.c b/src/drivers/spi/stmicro.c
index 9aa31cf402..af2385328b 100644
--- a/src/drivers/spi/stmicro.c
+++ b/src/drivers/spi/stmicro.c
@@ -136,7 +136,6 @@ static int stmicro_write(struct spi_flash *flash,
u32 offset, size_t len, const void *buf)
{
struct stmicro_spi_flash *stm = to_stmicro_spi_flash(flash);
- unsigned long page_addr;
unsigned long byte_addr;
unsigned long page_size;
size_t chunk_len;
@@ -144,8 +143,7 @@ static int stmicro_write(struct spi_flash *flash,
int ret;
u8 cmd[4];
- page_size = stm->params->page_size;
- page_addr = offset / page_size;
+ page_size = min(stm->params->page_size, CONTROLLER_PAGE_LIMIT);
byte_addr = offset % page_size;
flash->spi->rw = SPI_WRITE_FLAG;
@@ -155,15 +153,13 @@ static int stmicro_write(struct spi_flash *flash,
return ret;
}
- ret = 0;
for (actual = 0; actual < len; actual += chunk_len) {
chunk_len = min(len - actual, page_size - byte_addr);
cmd[0] = CMD_M25PXX_PP;
- cmd[1] = page_addr >> 8;
- cmd[2] = page_addr;
- cmd[3] = byte_addr;
-
+ cmd[1] = (offset >> 16) & 0xff;
+ cmd[2] = (offset >> 8) & 0xff;
+ cmd[3] = offset & 0xff;
#if CONFIG_DEBUG_SPI_FLASH
printk(BIOS_SPEW, "PP: 0x%p => cmd = { 0x%02x 0x%02x%02x%02x }"
" chunk_len = %zu\n",
@@ -173,29 +169,31 @@ static int stmicro_write(struct spi_flash *flash,
ret = spi_flash_cmd(flash->spi, CMD_M25PXX_WREN, NULL, 0);
if (ret < 0) {
printk(BIOS_WARNING, "SF: Enabling Write failed\n");
- break;
+ goto out;
}
ret = spi_flash_cmd_write(flash->spi, cmd, 4,
buf + actual, chunk_len);
if (ret < 0) {
printk(BIOS_WARNING, "SF: STMicro Page Program failed\n");
- break;
+ goto out;
}
ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT);
if (ret)
- break;
+ goto out;
- page_addr++;
+ offset += chunk_len;
byte_addr = 0;
}
#if CONFIG_DEBUG_SPI_FLASH
- printk(BIOS_SPEW, "SF: STMicro: Successfully programmed %zu bytes @ 0x%x\n",
- len, offset);
+ printk(BIOS_SPEW, "SF: STMicro: Successfully programmed %zu bytes @"
+ " 0x%lx\n", len, (unsigned long)(offset - len));
#endif
+ ret = 0;
+out:
spi_release_bus(flash->spi);
return ret;
}