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authorDuncan Laurie <dlaurie@chromium.org>2015-01-15 15:28:46 -0800
committerPatrick Georgi <pgeorgi@google.com>2015-04-17 09:21:22 +0200
commitfb032398d262ff7594c35c65b6f14897bb331a39 (patch)
treeadc486e7b25eff3f8b425eb75c78a8f4da77bed0 /src/include/spi_flash.h
parent1968b5801098ab1c549ed47e42f543aff1cb2637 (diff)
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spi: Add function to read flash status register
Add a function that allows reading of the status register from the SPI chip. This can be used to determine whether write protection is enabled on the chip. BUG=chrome-os-partner:35209 BRANCH=haswell TEST=build and boot on peppy Signed-off-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/240702 Reviewed-by: Shawn N <shawnn@chromium.org> (cherry picked from commit c58f17689162b291a7cdb57649a237de21b73545) Change-Id: Ib7fead2cc4ea4339ece322dd18403362c9c79c7d Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 9fbdf0d72892eef4a742a418a347ecf650c01ea5 Original-Change-Id: I2541b22c51e43f7b7542ee0f48618cf411976a98 Original-Signed-off-by: Duncan Laurie <dlaurie@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/241128 Original-Reviewed-by: Shawn N <shawnn@chromium.org> Reviewed-on: http://review.coreboot.org/9730 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/include/spi_flash.h')
-rw-r--r--src/include/spi_flash.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/include/spi_flash.h b/src/include/spi_flash.h
index cbb591933..3865a53dc 100644
--- a/src/include/spi_flash.h
+++ b/src/include/spi_flash.h
@@ -40,12 +40,15 @@ struct spi_flash {
u8 erase_cmd;
+ u8 status_cmd;
+
int (*read)(struct spi_flash *flash, u32 offset,
size_t len, void *buf);
int (*write)(struct spi_flash *flash, u32 offset,
size_t len, const void *buf);
int (*erase)(struct spi_flash *flash, u32 offset,
size_t len);
+ int (*status)(struct spi_flash *flash, u8 *reg);
};
struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs);