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| author | Lennert Buytenhek <buytenh@wantstofly.org> | 2009-11-12 20:31:14 +0100 |
|---|---|---|
| committer | Nicolas Pitre <nico@fluxnic.net> | 2009-11-13 12:14:23 -0500 |
| commit | 2bf30108435339c4cf149f9d279d0dc961345393 (patch) | |
| tree | 28f15de12bc1db42a7b77c6b5544e8584dc84c89 | |
| parent | 156171c71a0dc4bce12b4408bb1591f8fe32dc1a (diff) | |
| download | kernel_samsung_aries-2bf30108435339c4cf149f9d279d0dc961345393.zip kernel_samsung_aries-2bf30108435339c4cf149f9d279d0dc961345393.tar.gz kernel_samsung_aries-2bf30108435339c4cf149f9d279d0dc961345393.tar.bz2 | |
[ARM] Kirkwood: disable propagation of mbus error to the CPU local bus
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>
| -rw-r--r-- | arch/arm/mach-kirkwood/common.c | 8 | ||||
| -rw-r--r-- | arch/arm/mach-kirkwood/include/mach/bridge-regs.h | 3 |
2 files changed, 11 insertions, 0 deletions
diff --git a/arch/arm/mach-kirkwood/common.c b/arch/arm/mach-kirkwood/common.c index 7177c4a..242dd07 100644 --- a/arch/arm/mach-kirkwood/common.c +++ b/arch/arm/mach-kirkwood/common.c @@ -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 diff --git a/arch/arm/mach-kirkwood/include/mach/bridge-regs.h b/arch/arm/mach-kirkwood/include/mach/bridge-regs.h index 9e80d92..418f501 100644 --- a/arch/arm/mach-kirkwood/include/mach/bridge-regs.h +++ b/arch/arm/mach-kirkwood/include/mach/bridge-regs.h @@ -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 |