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[ARM] 4845/1: Orion: Ignore memory tags with invalid data

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The DNS-323, Kurobox-Pro / Linkstation-Pro, QNAP TS-109/TS-209 and some
other orion-based systems have several bogus memory entries in the tag
table, which causes the system to crash at startup. Ignore them by
resetting the tag ID to 0 in a machine fixup function.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Guennadi Liakhovetski 2008-02-29 21:12:57 +01:00 committed by Russell King
parent 29e8c3c304
commit be73a347ec
5 changed files with 29 additions and 0 deletions
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20
arch/arm/mach-orion/common.c
View File

@ -17,7 +17,9 @@
#include <linux/mv643xx_eth.h>
#include <linux/mv643xx_i2c.h>
#include <asm/page.h>
#include <asm/setup.h>
#include <asm/timex.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/arch/hardware.h>
#include "common.h"
@ -347,3 +349,21 @@ void __init orion_init(void)
platform_device_register(&orion_ehci1);
platform_device_register(&orion_i2c);
}
/*
* Many orion-based systems have buggy bootloader implementations.
* This is a common fixup for bogus memory tags.
*/
void __init tag_fixup_mem32(struct machine_desc *mdesc, struct tag *t,
char **from, struct meminfo *meminfo)
{
for (; t->hdr.size; t = tag_next(t))
if (t->hdr.tag == ATAG_MEM &&
(!t->u.mem.size || t->u.mem.size & ~PAGE_MASK ||
t->u.mem.start & ~PAGE_MASK)) {
printk(KERN_WARNING
"Clearing invalid memory bank %dKB@0x%08x\n",
t->u.mem.size / 1024, t->u.mem.start);
t->hdr.tag = 0;
}
}

6
arch/arm/mach-orion/common.h
View File

@ -83,4 +83,10 @@ struct mv_sata_platform_data;
void __init orion_sata_init(struct mv_sata_platform_data *sata_data);
struct machine_desc;
struct meminfo;
struct tag;
extern void __init tag_fixup_mem32(struct machine_desc *, struct tag *,
char **, struct meminfo *);
#endif /* __ARCH_ORION_COMMON_H__ */

1
arch/arm/mach-orion/dns323-setup.c
View File

@ -319,4 +319,5 @@ MACHINE_START(DNS323, "D-Link DNS-323")
.map_io = orion_map_io,
.init_irq = orion_init_irq,
.timer = &orion_timer,
.fixup = tag_fixup_mem32,
MACHINE_END

1
arch/arm/mach-orion/kurobox_pro-setup.c
View File

@ -240,4 +240,5 @@ MACHINE_START(KUROBOX_PRO, "Buffalo/Revogear Kurobox Pro")
.map_io = orion_map_io,
.init_irq = orion_init_irq,
.timer = &orion_timer,
.fixup = tag_fixup_mem32,
MACHINE_END

1
arch/arm/mach-orion/ts209-setup.c
View File

@ -357,4 +357,5 @@ MACHINE_START(TS209, "QNAP TS-109/TS-209")
.map_io = orion_map_io,
.init_irq = orion_init_irq,
.timer = &orion_timer,
.fixup = tag_fixup_mem32,
MACHINE_END