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commonlib: Add common cbfs parsing logic to coreboot and cbfstool.

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To continue sharing more code between the tools and
coreboot proper provide cbfs parsing logic in commonlib.
A cbfs_for_each_file() function was added to allow
one to act on each file found within a cbfs. cbfs_locate()
was updated to use that logic.

BUG=chrome-os-partner:48412
BUG=chromium:445938
BRANCH=None
TEST=Utilized and booted on glados.

Change-Id: I1f23841583e78dc3686f106de9eafe1adbef8c9f
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/12783
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
This commit is contained in:
Aaron Durbin
2015-12-15 13:33:51 -06:00
parent 990ab7efe5
commit 295d58bda8
5 changed files with 238 additions and 99 deletions
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28
src/include/cbfs.h
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@@ -16,19 +16,9 @@
#ifndef _CBFS_H_
#define _CBFS_H_
#include <commonlib/cbfs_serialized.h>
#include <commonlib/region.h>
#include <commonlib/cbfs.h>
#include <program_loading.h>
/*
* CBFS operations consist of the following concepts:
* - region_device for the boot media
* - cbfsd which is a descriptor for representing a cbfs instance
*/
/* Object representing cbfs files. */
struct cbfsf;
/***********************************************
* Perform CBFS operations on the boot device. *
***********************************************/
@@ -48,28 +38,12 @@ void *cbfs_boot_map_with_leak(const char *name, uint32_t type, size_t *size);
/* Load stage into memory filling in prog. Return 0 on success. < 0 on error. */
int cbfs_prog_stage_load(struct prog *prog);
/* Locate file by name and optional type. Returns 0 on succcess else < 0 on
* error.*/
int cbfs_locate(struct cbfsf *fh, const struct region_device *cbfs,
const char *name, uint32_t *type);
/*****************************************************************
* Support structures and functions. Direct field access should *
* only be done by implementers of cbfs regions -- Not the above *
* API. *
*****************************************************************/
struct cbfsf {
struct region_device metadata;
struct region_device data;
};
static inline void cbfs_file_data(struct region_device *data,
const struct cbfsf *file)
{
rdev_chain(data, &file->data, 0, region_device_sz(&file->data));
}
/* The cbfs_props struct describes the properties associated with a CBFS. */
struct cbfs_props {
/* CBFS starts at the following offset within the boot region. */