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reasonable output in cbfs loading (part 2) 

run hlt in endless loop, be friendly to the cpu

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4863 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Stefan Reinauer 2009-10-26 17:17:37 +00:00 committed by Stefan Reinauer
parent b4f3da5b14
commit 472837ad61
1 changed files with 27 additions and 11 deletions
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36
src/arch/i386/lib/cbfs_and_run.c
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@ -1,6 +1,22 @@
/* by yhlu 6.2005 /*
moved from nrv2v.c and some lines from crt0.S * This file is part of the coreboot project.
2006/05/02 - stepan: move nrv2b to an extra file. *
* Copyright (C) 2008-2009 coresystems GmbH
*
* 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 <console/console.h> #include <console/console.h>
@ -9,20 +25,20 @@
void cbfs_and_run_core(char *filename, unsigned ebp) void cbfs_and_run_core(char *filename, unsigned ebp)
{ {
u8 *dst; u8 *dst;
print_debug("Jumping to image.\r\n");
print_debug("Loading stage image.\n");
dst = cbfs_load_stage(filename); dst = cbfs_load_stage(filename);
if (dst == (void *) -1) { if (dst == (void *) -1) {
/* We should use die() here. */ /* We should use die() here. */
print_emerg("Loading stage failed!\n"); print_emerg("Loading stage failed!\n");
for (;;); for (;;)
asm("hlt\n");
} }
print_debug("Jumping to image.\r\n");
print_debug("Jumping to image.\n");
__asm__ volatile ( __asm__ volatile (
"movl %%eax, %%ebp\n\t" "movl %%eax, %%ebp\n"
"cli\n\t" "jmp *%%edi\n"
"jmp *%%edi\n\t"
:: "a"(ebp), "D"(dst) :: "a"(ebp), "D"(dst)
); );
} }