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drivers/intel/fsp1_1: Exit cleanly if FSP not found 

Instead of dereferencing a null pointer, print a nice message and exit
cleanly if the FSP isn't found in the CBFS.

Change-Id: I761e7febc7cec5bd2ef3af214bc51777ee5c313d
Signed-off-by: Jacob Garber <jgarber1@ualberta.ca>
Found-by: Coverity CID 1401467, 1401717
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33049
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Jacob Garber 2019-05-28 15:37:37 -06:00 committed by Patrick Georgi
parent 7da638c20e
commit f7f90f7c3f
1 changed files with 6 additions and 9 deletions
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11
src/drivers/intel/fsp1_1/car.c
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@ -160,17 +160,14 @@ void mainboard_romstage_entry(unsigned long bist)
{ {
/* Need to locate the current FSP_INFO_HEADER. The cache-as-ram /* Need to locate the current FSP_INFO_HEADER. The cache-as-ram
* is still enabled. We can directly access work buffer here. */ * is still enabled. We can directly access work buffer here. */
FSP_INFO_HEADER *fih;
struct prog fsp = PROG_INIT(PROG_REFCODE, "fsp.bin"); struct prog fsp = PROG_INIT(PROG_REFCODE, "fsp.bin");
if (prog_locate(&fsp)) { if (prog_locate(&fsp))
fih = NULL; die_with_post_code(POST_INVALID_CBFS, "Unable to locate fsp.bin");
printk(BIOS_ERR, "Unable to locate %s\n", prog_name(&fsp));
} else {
/* This leaks a mapping which this code assumes is benign as /* This leaks a mapping which this code assumes is benign as
* the flash is memory mapped CPU's address space. */ * the flash is memory mapped CPU's address space. */
fih = find_fsp((uintptr_t)rdev_mmap_full(prog_rdev(&fsp))); FSP_INFO_HEADER *fih = find_fsp((uintptr_t)rdev_mmap_full(prog_rdev(&fsp)));
}
cache_as_ram_stage_main(fih); cache_as_ram_stage_main(fih);
} }