lib/prog_loaders.c: Add prog_locate_hook()
There is no posibility to prevent loading images from cbfs at this stage
For security features prog_locate_hook() is added. This hook can be used
to prevent loading the image.
BUG=N/A
TEST=Created verified binary and verify logging on Facebook FBG-1701
Change-Id: I12207fc8f2e9ca45d048cf8c8d9c057f53e5c2c7
Signed-off-by: Frans Hendriks <fhendriks@eltan.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/30811
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
diff --git a/src/lib/prog_loaders.c b/src/lib/prog_loaders.c
index 2ef6bdf..5048c99 100644
--- a/src/lib/prog_loaders.c
+++ b/src/lib/prog_loaders.c
@@ -2,6 +2,7 @@
* This file is part of the coreboot project.
*
* Copyright 2015 Google Inc.
+ * Copyright (C) 2018-2019 Eltan B.V.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -38,6 +39,9 @@
{
struct cbfsf file;
+ if (prog_locate_hook(prog))
+ return -1;
+
cbfs_prepare_program_locate();
if (cbfs_boot_locate(&file, prog_name(prog), NULL))
@@ -74,6 +78,8 @@
halt();
}
+int __weak prog_locate_hook(struct prog *prog) { return 0; }
+
static void ramstage_cache_invalid(void)
{
printk(BIOS_ERR, "ramstage cache invalid.\n");