diff options
| author | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2013-08-18 12:44:24 +0300 |
|---|---|---|
| committer | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2013-08-23 05:07:11 +0200 |
| commit | 1cf85774da278229229fb77891326d645176d24d (patch) | |
| tree | bed283ed0892e38a145cbe91a23ee91c30c1ce31 /src/drivers/spi | |
| parent | 93b2bd70ff65a534e91c203c7948deea315675d5 (diff) | |
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.c | 26 |
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; } |