HP 820 G2: Use fam15h cbfstool tree for refcode

We used cbfstool from coreboot 4.13, because it was the
last version to work with the particular format used
for stage files, before the CBFS standard changed in newer
releases of cbfstool.

When I added this board to Libreboot, it was source-only at
first so it didn't matter. I didn't want to do a standalone
cbfstool binary, in case some people decided to use that one
on newer boards, which would cause all sorts of issues.

So I bodged it and just included an import of coreboot 4.13.

Well, the cbfstool from coreboot 4.11, as used for FAM15H
AMD boards, is compatible. I checked the code diff between
the two, and there is no meaningful difference.

I've tested this, and it works, since the last release or
two now includes 820 G2 images, so I  was able to use those
with ./mk inject, to verify whether the refcode file is
still grabbed properly. We need the refcode to handle MRC
on Broadwell platform, but we extract it from an old Google
Chromebook image, that uses the old CBFS stage file layout.

This change solves my problem: the problem was that releases
are bloated further, due to including this extra coreboot
version. This should reduce the size of the next release
considerably, especially after decompressing the tarball.

Signed-off-by: Leah Rowe <leah@libreboot.org>

config/coreboot/coreboot413/patches/0001-cbfstool-Make-use-of-spurious-null-termination.patch

@@ -1,56 +0,0 @@
-From f22f408956bf02609a96b7d72fb3321da159bfc6 Mon Sep 17 00:00:00 2001
-From: Nico Huber <nico.huber@secunet.com>
-Date: Tue, 22 Jun 2021 13:49:44 +0000
-Subject: [PATCH 1/1] cbfstool: Make use of spurious null-termination
-
-The null-termination of `filetypes` was added after the code was
-written, obviously resulting in NULL dereferences. As some more
-code has grown around the termination, it's hard to revert the
-regression, so let's update the code that still used the array
-length.
-
-This fixes commit 7f5f9331d1 (util/cbfstool: fix buffer over-read)
-which actually did fix something, but only one path while it broke
-two others. We should be careful with fixes, they can always break
-something else. Especially when a dumb tool triggered the patching
-it seems likely that fewer people looked into related code.
-
-Change-Id: If2ece1f5ad62952ed2e57769702e318ba5468f0c
-Signed-off-by: Nico Huber <nico.huber@secunet.com>
-Reviewed-on: https://review.coreboot.org/c/coreboot/+/55763
-Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
-Reviewed-by: Julius Werner <jwerner@chromium.org>
----
- util/cbfstool/common.c | 8 ++++----
- 1 file changed, 4 insertions(+), 4 deletions(-)
-
-diff --git a/util/cbfstool/common.c b/util/cbfstool/common.c
-index e2ed38ffc4..539d0baccf 100644
---- a/util/cbfstool/common.c
-+++ b/util/cbfstool/common.c
-@@ -168,10 +168,10 @@ void print_supported_architectures(void)
- 
- void print_supported_filetypes(void)
- {
--	int i, number = ARRAY_SIZE(filetypes);
-+	int i;
- 
--	for (i=0; i<number; i++) {
--		printf(" %s%c", filetypes[i].name, (i==(number-1))?'\n':',');
-+	for (i=0; filetypes[i].name; i++) {
-+		printf(" %s%c", filetypes[i].name, filetypes[i + 1].name ? ',' : '\n');
- 		if ((i%8) == 7)
- 			printf("\n");
- 	}
-@@ -180,7 +180,7 @@ void print_supported_filetypes(void)
- uint64_t intfiletype(const char *name)
- {
- 	size_t i;
--	for (i = 0; i < (sizeof(filetypes) / sizeof(struct typedesc_t)); i++)
-+	for (i = 0; filetypes[i].name; i++)
- 		if (strcmp(filetypes[i].name, name) == 0)
- 			return filetypes[i].type;
- 	return -1;
--- 
-2.39.2
-

config/coreboot/coreboot413/patches/0002-Fix-cbfstool-build-error-on-GCC-15-host-compiler.patch

@@ -1,33 +0,0 @@
-From 06e8d7a9db4efe1dc2b7e5865b801a5518b38fbd Mon Sep 17 00:00:00 2001
-From: Alper Nebi Yasak <alpernebiyasak@gmail.com>
-Date: Tue, 29 Apr 2025 17:31:13 +0300
-Subject: [PATCH 1/1] Fix cbfstool build error on GCC 15 host compiler
-
-GCC 15 now considers the unterminated-string-initialization warning as
-part of -Werror by default. Coreboot compiles host utilities with the
-system compiler, which results in getting this error in some files.
-
-Mark a hexadecimal translation table in cbfstool code as "nonstring" to
-avoid the warning-turned-error.
-
-Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
----
- util/cbfstool/common.c | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/util/cbfstool/common.c b/util/cbfstool/common.c
-index 539d0baccf..f6fe647503 100644
---- a/util/cbfstool/common.c
-+++ b/util/cbfstool/common.c
-@@ -188,7 +188,7 @@ uint64_t intfiletype(const char *name)
- 
- char *bintohex(uint8_t *data, size_t len)
- {
--	static const char translate[16] = "0123456789abcdef";
-+	static const char translate[16] __attribute__((__nonstring__)) = "0123456789abcdef";
- 
- 	char *result = malloc(len * 2 + 1);
- 	if (result == NULL)
--- 
-2.39.5
-

config/coreboot/coreboot413/target.cfg

@@ -1,4 +0,0 @@
-# SPDX-License-Identifier: GPL-3.0-or-later
-
-tree="coreboot413"
-rev="5c186c6777c9438ff4681929c9c25c98dee28bef"