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[ARM] Kirkwood: disable propagation of mbus error to the CPU local bus

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Disable propagation of mbus errors to the CPU local bus, as this causes
mbus errors (which can occur for example for PCI aborts) to throw CPU
aborts, which we're not set up to deal with.

Reported-by: Dieter Kiermaier <dk-arm-linux@gmx.de>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: Nicolas Pitre <nico@marvell.com>
This commit is contained in:
Lennert Buytenhek 2009-11-12 20:31:14 +01:00 committed by Nicolas Pitre
parent 156171c71a
commit 2bf3010843
2 changed files with 11 additions and 0 deletions
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8
arch/arm/mach-kirkwood/common.c
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@ -915,6 +915,14 @@ void __init kirkwood_init(void)
kirkwood_uart0_data[0].uartclk = kirkwood_tclk;
kirkwood_uart1_data[0].uartclk = kirkwood_tclk;
/*
* Disable propagation of mbus errors to the CPU local bus,
* as this causes mbus errors (which can occur for example
* for PCI aborts) to throw CPU aborts, which we're not set
* up to deal with.
*/
writel(readl(CPU_CONFIG) & ~CPU_CONFIG_ERROR_PROP, CPU_CONFIG);
kirkwood_setup_cpu_mbus();
#ifdef CONFIG_CACHE_FEROCEON_L2

3
arch/arm/mach-kirkwood/include/mach/bridge-regs.h
View file

@ -13,6 +13,9 @@
#include <mach/kirkwood.h>
#define CPU_CONFIG (BRIDGE_VIRT_BASE | 0x0100)
#define CPU_CONFIG_ERROR_PROP 0x00000004
#define CPU_CONTROL (BRIDGE_VIRT_BASE | 0x0104)
#define CPU_RESET 0x00000002