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commonlib/region: Turn addrspace_32bit into a more official API

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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>
This commit is contained in:
Julius Werner
2021-04-16 16:48:32 -07:00
parent b03e497ef1
commit c893197352
16 changed files with 117 additions and 147 deletions
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4
src/lib/cbfs.c
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@@ -89,7 +89,7 @@ int cbfs_boot_locate(struct cbfsf *fh, const char *name, uint32_t *type)
return -1;
size_t msize = be32toh(fh->mdata.h.offset);
if (rdev_chain(&fh->metadata, &addrspace_32bit.rdev, (uintptr_t)&fh->mdata, msize))
if (rdev_chain_mem(&fh->metadata, &fh->mdata, msize))
return -1;
if (type) {
@@ -436,7 +436,7 @@ cb_err_t cbfs_prog_stage_load(struct prog *pstage)
void *compr_start = prog_start(pstage) + prog_size(pstage) - in_size;
if (rdev_readat(&rdev, compr_start, 0, in_size) != in_size)
return CB_ERR;
rdev_chain(&rdev, &addrspace_32bit.rdev, (uintptr_t)compr_start, in_size);
rdev_chain_mem(&rdev, compr_start, in_size);
}
size_t fsize = cbfs_load_and_decompress(&rdev, prog_start(pstage), prog_size(pstage),