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cbfs: Pull handling of the CBFS_CACHE mem_pool into CBFS core

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This patch pulls control of the memory pool serving allocations from the
CBFS_CACHE memlayout area into cbfs.c and makes it a core part of the
CBFS API. Previously, platforms would independently instantiate this as
part of boot_device_ro() (mostly through cbfs_spi.c). The new cbfs_cache
pool is exported as a global so these platforms can still use it to
directly back rdev_mmap() on their boot device, but the cbfs_cache can
now also use it to directly make allocations itself. This is used to
allow transparent decompression support in cbfs_map().

Signed-off-by: Julius Werner <jwerner@chromium.org>
Change-Id: I0d52b6a8f582a81a19fd0fd663bb89eab55a49d9
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49333
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Julius Werner
2020-12-30 17:30:12 -08:00
parent 11075fc80e
commit 9b1f3cc6fb
10 changed files with 89 additions and 49 deletions
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6
src/include/symbols.h
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@@ -32,9 +32,9 @@ DECLARE_OPTIONAL_REGION(timestamp)
DECLARE_REGION(preram_cbmem_console)
DECLARE_REGION(cbmem_init_hooks)
DECLARE_REGION(stack)
DECLARE_REGION(preram_cbfs_cache)
DECLARE_REGION(postram_cbfs_cache)
DECLARE_REGION(cbfs_cache)
DECLARE_OPTIONAL_REGION(preram_cbfs_cache)
DECLARE_OPTIONAL_REGION(postram_cbfs_cache)
DECLARE_OPTIONAL_REGION(cbfs_cache)
DECLARE_REGION(cbfs_mcache)
DECLARE_REGION(fmap_cache)
DECLARE_REGION(tpm_tcpa_log)