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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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6
src/include/program_loading.h
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@ -91,15 +91,11 @@ static inline void *prog_entry_arg(const struct prog *prog)
return prog->arg;
}
/* region_device representing the 32-bit flat address space. */
extern const struct mem_region_device addrspace_32bit;
/* Can be used to get an rdev representation of program area in memory. */
static inline void prog_chain_rdev(const struct prog *prog,
struct region_device *rdev_out)
{
rdev_chain(rdev_out, &addrspace_32bit.rdev,
(uintptr_t)prog->start, prog->size);
rdev_chain_mem(rdev_out, prog->start, prog->size);
}
static inline void prog_set_area(struct prog *prog, void *start, size_t size)