New patch to review for coreboot: 1282e28 Prepare Spansion driver for use in CBFS wrapper

[Marc Jones]

Marc Jones ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/7933

-gerrit

commit 1282e28becdf933c3b6284b534c628a99781e64f
Author: Vadim Bendebury 
Date:   Thu May 1 19:30:46 2014 -0700

Prepare Spansion driver for use in CBFS wrapper

Since the same driver is going to be used at all coreboot stages, it
    can not use malloc() anymore. Replace it with static allocation of the
    driver container structure.

The read interface is changed to spi_flash_cmd_read_slow(), because of
    the problems with spi_flash_cmd_read_fast() implementation. In fact
    there is no performance difference in the way the two interface
    functions are implemented.

BUG=chrome-os-partner:27784
    TEST=manual
      . with all patches applied coreboot proceeds to attempting to load
        the payload.

Original-Change-Id: I1c7beedce7747bc89ab865fd844b568ad50d2dae
    Original-Signed-off-by: Vadim Bendebury 
    Original-Reviewed-on: https://chromium-review.googlesource.com/197931
    Original-Reviewed-by: Aaron Durbin 
    Original-Reviewed-by: David Hendricks 
    (cherry picked from commit 57ee2fd875c689706c70338e073acefb806787e7)
    Signed-off-by: Marc Jones

Change-Id: I9d9e7e343148519580ed4986800dc6c6b9a5f5d2
---
 src/drivers/spi/spansion.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/src/drivers/spi/spansion.c b/src/drivers/spi/spansion.c
index e17f890..c7e31fe 100644
--- a/src/drivers/spi/spansion.c
+++ b/src/drivers/spi/spansion.c
@@ -208,6 +208,8 @@ static int spansion_erase(struct spi_flash *flash, u32 offset, size_t len)
    return spi_flash_cmd_erase(flash, CMD_S25FLXX_SE, offset, len);
 }

+static struct spansion_spi_flash spsn_flash;
+
 struct spi_flash *spi_flash_probe_spansion(struct spi_slave *spi, u8 *idcode)
 {
    const struct spansion_spi_flash_params *params;
@@ -231,11 +233,7 @@ struct spi_flash *spi_flash_probe_spansion(struct spi_slave *spi, u8 *idcode)
    	return NULL;
    }

-	spsn = malloc(sizeof(struct spansion_spi_flash));
-	if (!spsn) {
-		printk(BIOS_WARNING, "SF: Failed to allocate memory\n");
-		return NULL;
-	}
+	spsn = &spsn_flash;

spsn->params = params;
    spsn->flash.spi = spi;
@@ -243,7 +241,7 @@ struct spi_flash *spi_flash_probe_spansion(struct spi_slave *spi, u8 *idcode)

spsn->flash.write = spansion_write;
    spsn->flash.erase = spansion_erase;
-	spsn->flash.read = spi_flash_cmd_read_fast;
+	spsn->flash.read = spi_flash_cmd_read_slow;
    spsn->flash.sector_size = params->page_size * params->pages_per_sector;
    spsn->flash.size = spsn->flash.sector_size * params->nr_sectors;