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author | Julius Werner <jwerner@chromium.org> | 2021-04-16 16:48:32 -0700 |
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committer | Julius Werner <jwerner@chromium.org> | 2021-04-21 02:06:26 +0000 |
commit | c893197352acc9b53c1beef5082cbc0271f63688 (patch) | |
tree | b975712387bd54bd0101a736adbb2a6fe5b824bb /src/commonlib/region.c | |
parent | b03e497ef16e9e38ba9220d31131a6bfdef35390 (diff) | |
download | coreboot-c893197352acc9b53c1beef5082cbc0271f63688.tar.gz coreboot-c893197352acc9b53c1beef5082cbc0271f63688.tar.bz2 coreboot-c893197352acc9b53c1beef5082cbc0271f63688.zip |
commonlib/region: Turn addrspace_32bit into a more official API
We had the addrspace_32bit rdev in prog_loaders.c for a while to help
represent memory ranges as an rdev, and we've found it useful for a
couple of things that have nothing to do with program loading. This
patch moves the concept straight into commonlib/region.c so it is no
longer anchored in such a weird place, and easier to use in unit tests.
Also expand the concept to the whole address space (there's no real need
to restrict it to 32 bits in 64-bit environments) and introduce an
rdev_chain_mem() helper function to make it a bit easier to use. Replace
some direct uses of struct mem_region_device with this new API where it
seems to make sense.
Signed-off-by: Julius Werner <jwerner@chromium.org>
Change-Id: Ie4c763b77f77d227768556a9528681d771a08dca
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52533
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'src/commonlib/region.c')
-rw-r--r-- | src/commonlib/region.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/commonlib/region.c b/src/commonlib/region.c index 55c067903369..04c3180754ff 100644 --- a/src/commonlib/region.c +++ b/src/commonlib/region.c @@ -287,6 +287,19 @@ const struct region_device_ops mem_rdev_rw_ops = { .eraseat = mdev_eraseat, }; +static const struct mem_region_device mem_rdev = MEM_REGION_DEV_RO_INIT(0, ~(size_t)0); +static const struct mem_region_device mem_rdev_rw = MEM_REGION_DEV_RW_INIT(0, ~(size_t)0); + +int rdev_chain_mem(struct region_device *child, const void *base, size_t size) +{ + return rdev_chain(child, &mem_rdev.rdev, (uintptr_t)base, size); +} + +int rdev_chain_mem_rw(struct region_device *child, void *base, size_t size) +{ + return rdev_chain(child, &mem_rdev_rw.rdev, (uintptr_t)base, size); +} + void *mmap_helper_rdev_mmap(const struct region_device *rd, size_t offset, size_t size) { |