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coreboot-kgpe-d16/src/arch/arm/div0.c

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WIP: Initial ARMv7 architecture implementation in coreboot The first ARMv7 CPU we're going to support is the Exynos 5250 used in the Google Snow ChromeBook. Change-Id: I4de8433bbc6202eb8fef2556a11186a3376d411b Signed-off-by: David Hendricks <dhendrix@chromium.org> Signed-off-by: Stefan Reinauer <reinauer@google.com> Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/2004 Tested-by: build bot (Jenkins)
2012-12-08 02:15:04 +01:00
/*
* (C) Copyright 2002
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* 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; either version 2 of
* the License, or (at your option) any later version.
*
* 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.
*/
armv7: don't hang on divide by zero People make mistakes. Hanging the box is not a good reason to kill the firmware, esp. since this is probably happening in a printk. The only issue with the recursive call to printk is that we may deadlock if we have locked something. But we can at least try. Hanging is certainly not what we want ... Change-Id: Ib3bc87bc395ae89e115cf6d042f4167856422ca1 Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/2233 Tested-by: build bot (Jenkins) Reviewed-by: Peter Stuge <peter@stuge.se>
2013-01-30 22:05:19 +01:00
#include <console/console.h>
WIP: Initial ARMv7 architecture implementation in coreboot The first ARMv7 CPU we're going to support is the Exynos 5250 used in the Google Snow ChromeBook. Change-Id: I4de8433bbc6202eb8fef2556a11186a3376d411b Signed-off-by: David Hendricks <dhendrix@chromium.org> Signed-off-by: Stefan Reinauer <reinauer@google.com> Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/2004 Tested-by: build bot (Jenkins)
2012-12-08 02:15:04 +01:00
void __div0(void); // called from asm so no need for a prototype in a header
/* Replacement (=dummy) for GNU/Linux division-by zero handler */
armv7: don't hang on divide by zero People make mistakes. Hanging the box is not a good reason to kill the firmware, esp. since this is probably happening in a printk. The only issue with the recursive call to printk is that we may deadlock if we have locked something. But we can at least try. Hanging is certainly not what we want ... Change-Id: Ib3bc87bc395ae89e115cf6d042f4167856422ca1 Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/2233 Tested-by: build bot (Jenkins) Reviewed-by: Peter Stuge <peter@stuge.se>
2013-01-30 22:05:19 +01:00
/* recursion is ok here because we have no formats ... */
WIP: Initial ARMv7 architecture implementation in coreboot The first ARMv7 CPU we're going to support is the Exynos 5250 used in the Google Snow ChromeBook. Change-Id: I4de8433bbc6202eb8fef2556a11186a3376d411b Signed-off-by: David Hendricks <dhendrix@chromium.org> Signed-off-by: Stefan Reinauer <reinauer@google.com> Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/2004 Tested-by: build bot (Jenkins)
2012-12-08 02:15:04 +01:00
void __div0 (void)
{
armv7: don't hang on divide by zero People make mistakes. Hanging the box is not a good reason to kill the firmware, esp. since this is probably happening in a printk. The only issue with the recursive call to printk is that we may deadlock if we have locked something. But we can at least try. Hanging is certainly not what we want ... Change-Id: Ib3bc87bc395ae89e115cf6d042f4167856422ca1 Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/2233 Tested-by: build bot (Jenkins) Reviewed-by: Peter Stuge <peter@stuge.se>
2013-01-30 22:05:19 +01:00
printk(BIOS_EMERG, "DIVIDE BY ZERO! continuing ... \n");
WIP: Initial ARMv7 architecture implementation in coreboot The first ARMv7 CPU we're going to support is the Exynos 5250 used in the Google Snow ChromeBook. Change-Id: I4de8433bbc6202eb8fef2556a11186a3376d411b Signed-off-by: David Hendricks <dhendrix@chromium.org> Signed-off-by: Stefan Reinauer <reinauer@google.com> Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/2004 Tested-by: build bot (Jenkins)
2012-12-08 02:15:04 +01:00
}