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intel: fsp2_0: Move last pieces to new CBFS API

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This patch ports the last remaining use of cbfs_boot_locate() in the
Intel FSP drivers to the new CBFS API. As a consequence, there is no
longer a reason for fsp_validate_component() to operate on rdevs, and
the function is simplified to take a direct void pointer and size to a
memory-mapping of the FSP blob instead.

Signed-off-by: Julius Werner <jwerner@chromium.org>
Change-Id: If1f0239eefa4542e4d23f6e2e3ff19106f2e3c0d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52281
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Julius Werner
2021-04-12 17:00:16 -07:00
parent b3182fbb00
commit 43c9d709c7
4 changed files with 18 additions and 30 deletions
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23
src/drivers/intel/fsp2_0/util.c
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@ -55,32 +55,25 @@ enum cb_err fsp_identify(struct fsp_header *hdr, const void *fsp_blob)
return CB_SUCCESS;
}
enum cb_err fsp_validate_component(struct fsp_header *hdr,
const struct region_device *rdev)
enum cb_err fsp_validate_component(struct fsp_header *hdr, void *fsp_file, size_t file_size)
{
void *membase;
void *raw_hdr = fsp_file + FSP_HDR_OFFSET;
/* Map just enough of the file to be able to parse the header. */
membase = rdev_mmap(rdev, FSP_HDR_OFFSET, FSP_HDR_LEN);
if (membase == NULL) {
printk(BIOS_CRIT, "Could not mmap() FSP header.\n");
if (file_size < FSP_HDR_OFFSET + FSP_HDR_LEN) {
printk(BIOS_CRIT, "FSP blob too small.\n");
return CB_ERR;
}
if (fsp_identify(hdr, membase) != CB_SUCCESS) {
rdev_munmap(rdev, membase);
if (fsp_identify(hdr, raw_hdr) != CB_SUCCESS) {
printk(BIOS_CRIT, "No valid FSP header\n");
return CB_ERR;
}
rdev_munmap(rdev, membase);
if (CONFIG(DISPLAY_FSP_HEADER))
fsp_print_header_info(hdr);
/* Check if size specified in the header matches the cbfs file size */
if (region_device_sz(rdev) < hdr->image_size) {
if (file_size < hdr->image_size) {
printk(BIOS_CRIT, "Component size bigger than cbfs file.\n");
return CB_ERR;
}
@ -145,7 +138,6 @@ enum cb_err fsp_load_component(struct fsp_load_descriptor *fspld, struct fsp_hea
{
size_t output_size;
void *dest;
struct region_device prog_rdev;
struct prog *fsp_prog = &fspld->fsp_prog;
dest = cbfs_alloc(prog_name(fsp_prog), fspld->alloc, fspld, &output_size);
@ -160,8 +152,7 @@ enum cb_err fsp_load_component(struct fsp_load_descriptor *fspld, struct fsp_hea
prog_set_area(fsp_prog, dest, output_size);
prog_chain_rdev(fsp_prog, &prog_rdev);
if (fsp_validate_component(hdr, &prog_rdev) != CB_SUCCESS) {
if (fsp_validate_component(hdr, dest, output_size) != CB_SUCCESS) {
printk(BIOS_ERR, "Invalid FSP header after load!\n");
return CB_ERR;
}