diff options
| author | Mary Ruthven <mruthven@chromium.org> | 2015-11-24 09:43:27 -0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2015-12-03 14:22:55 +0100 |
| commit | a8aef3acbc0aea2dd594f7133a7024f3babf764a (patch) | |
| tree | 659badd802486a57ff2fad1c430c606a207350d3 /src | |
| parent | 5b242f6307f1824d0833f957b9829952fa5ad54e (diff) | |
cbfs_spi: Initialize spi_flash when initializing cbfs_cache
Most devices do not use SPI before they initialize CBMEM. This change
initializes spi_flash in the CBMEM_INIT_HOOK to initialize the postram
cbfs cache so it is not overwritten when boot_device_init is called
later.
BUG=chromium:210230
BRANCH=none
TEST=confirm that the first cbfs access can occur before RAM initialized
and after on panther and jerry.
Change-Id: If3b6efc04082190e81c3773c0d3ce116bb12421f
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 0ab242786a16eba7fb423694f6b266e27d7660ec
Original-Change-Id: I5f884b473e51e6813fdd726bba06b56baf3841b0
Original-Signed-off-by: Mary Ruthven <mruthven@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/314311
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/12601
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/include/memlayout.h | 2 | ||||
| -rw-r--r-- | src/include/symbols.h | 6 | ||||
| -rw-r--r-- | src/lib/cbfs_spi.c | 9 |
3 files changed, 12 insertions, 5 deletions
diff --git a/src/include/memlayout.h b/src/include/memlayout.h index 899836c5f0..3178bc4893 100644 --- a/src/include/memlayout.h +++ b/src/include/memlayout.h @@ -82,7 +82,7 @@ #if ENV_ROMSTAGE #define PRERAM_CBFS_CACHE(addr, size) CBFS_CACHE(addr, size) #define POSTRAM_CBFS_CACHE(addr, size) \ - REGION(dram_cbfs_cache, addr, size, 4) + REGION(postram_cbfs_cache, addr, size, 4) #elif defined(__PRE_RAM__) #define PRERAM_CBFS_CACHE(addr, size) CBFS_CACHE(addr, size) #define POSTRAM_CBFS_CACHE(addr, size) \ diff --git a/src/include/symbols.h b/src/include/symbols.h index bf875aed57..aa055ec852 100644 --- a/src/include/symbols.h +++ b/src/include/symbols.h @@ -41,9 +41,9 @@ extern u8 _stack[]; extern u8 _estack[]; #define _stack_size (_estack - _stack) -extern u8 _dram_cbfs_cache[]; -extern u8 _edram_cbfs_cache[]; -#define _dram_cbfs_cache_size (_edram_cbfs_cache - _dram_cbfs_cache) +extern u8 _postram_cbfs_cache[]; +extern u8 _epostram_cbfs_cache[]; +#define _postram_cbfs_cache_size (_epostram_cbfs_cache - _postram_cbfs_cache) extern u8 _cbfs_cache[]; extern u8 _ecbfs_cache[]; diff --git a/src/lib/cbfs_spi.c b/src/lib/cbfs_spi.c index 82c3b834d3..ffa0628b05 100644 --- a/src/lib/cbfs_spi.c +++ b/src/lib/cbfs_spi.c @@ -45,7 +45,14 @@ static struct mmap_helper_region_device mdev = static void initialize_mdev(int unused) { - mmap_helper_device_init(&mdev, _dram_cbfs_cache, _dram_cbfs_cache_size); + /* + * Call boot_device_init() to ensure spi_flash is initialized before + * backing mdev with postram cache. This prevents the mdev backing from + * being overwritten if spi_flash was not accessed before dram was up. + */ + boot_device_init(); + mmap_helper_device_init(&mdev, _postram_cbfs_cache, + _postram_cbfs_cache_size); } ROMSTAGE_CBMEM_INIT_HOOK(initialize_mdev); |