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UPSTREAM: drivers/spi: provide a mechanism to obtain the SPI flash boot device

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The MRC cache wants to be able to access the SPI flash boot device.
Allow an easy way to provide that so that there isn't duplicate
spi_flash objects representing the same device.

BUG=chrome-os-partner:56151
BRANCH=None
TEST=None

Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/17715
Tested-by: build bot (Jenkins)
Reviewed-by: Furquan Shaikh <furquan@google.com>

Change-Id: Iba92e8bb8a6060cdd327b10f5f8ec23ac61101e7
Reviewed-on: https://chromium-review.googlesource.com/418435
Commit-Ready: Furquan Shaikh <furquan@chromium.org>
Tested-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Aaron Durbin 2016-12-03 17:04:06 -06:00 • committed by chrome-bot
parent abf56875a5
commit 5d4276f439
2 changed files with 10 additions and 0 deletions
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6
src/drivers/spi/boot_device_rw_nommap.c
View file

@ -95,3 +95,9 @@ const struct region_device *boot_device_rw(void)
return &spi_rw;
}
const struct spi_flash *boot_device_spi_flash(void)
{
boot_device_rw_init();
return car_get_var(sfg);
}

4
src/include/spi_flash.h
View file

@ -88,4 +88,8 @@ int spi_flash_volatile_group_end(const struct spi_flash *flash);
int chipset_volatile_group_begin(const struct spi_flash *flash);
int chipset_volatile_group_end(const struct spi_flash *flash);
/* Return spi_flash object reference for the boot device. This is only valid
* if CONFIG_BOOT_DEVICE_SPI_FLASH is enabled. */
const struct spi_flash *boot_device_spi_flash(void);
#endif /* _SPI_FLASH_H_ */