loaders: add run_romstage() function to bootblock

Provide a common run_romstage() function to be used by
bootblocks to load and run romstage. This is similar to
run_ramstage() in that it provides a single entry point
for doing the necessary work of loading and running romstage.

Change-Id: Ia9643cc091f97a836cf5caefdff8df4a3443df4c
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/8709
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Aaron Durbin 2015-03-17 13:17:06 -05:00 committed by Aaron Durbin
parent 6bb6a1a79c
commit d1b0e87179
3 changed files with 49 additions and 0 deletions

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@ -22,6 +22,12 @@
#include <stdint.h>
#include <stddef.h>
/************************
* ROMSTAGE LOADING *
************************/
/* Run romstage from bootblock. */
void run_romstage(void);
/************************
* RAMSTAGE LOADING *

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@ -17,6 +17,7 @@
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
bootblock-y += load_and_run_romstage.c
romstage-y += cbfs_ramstage_loader.c
romstage-y += load_and_run_ramstage.c
ramstage-y += cbfs_payload_loader.c

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@ -0,0 +1,42 @@
/*
* This file is part of the coreboot project.
*
* Copyright 2015 Google Inc.
*
* 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
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdlib.h>
#include <console/console.h>
#include <arch/stages.h>
#include <cbfs.h>
#include <halt.h>
#include <program_loading.h>
void run_romstage(void)
{
void *entry;
entry = cbfs_load_stage(CBFS_DEFAULT_MEDIA,
CONFIG_CBFS_PREFIX "/romstage");
if (entry == (void *)-1) {
if (IS_ENABLED(CONFIG_BOOTBLOCK_CONSOLE))
die("Couldn't load romstage.\n");
halt();
}
stage_exit(entry);
}