diff options
| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2008-08-10 18:08:10 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-09-01 12:06:23 +0100 |
| commit | 0ba8b9b273c45dd23f60ff700e265a0069b33758 (patch) | |
| tree | cb6aef90464889a27215cf9b7204c11b12e7c628 /arch/arm/mach-ixp4xx | |
| parent | b8e6c91c74e9f0279b7c51048779b3d62da60b88 (diff) | |
[ARM] cputype: separate definitions, use them
Add asm/cputype.h, moving functions and definitions from asm/system.h
there. Convert all users of 'processor_id' to the more efficient
read_cpuid_id() function.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-ixp4xx')
| -rw-r--r-- | arch/arm/mach-ixp4xx/common-pci.c | 7 | ||||
| -rw-r--r-- | arch/arm/mach-ixp4xx/include/mach/cpu.h | 9 |
2 files changed, 8 insertions, 8 deletions
diff --git a/arch/arm/mach-ixp4xx/common-pci.c b/arch/arm/mach-ixp4xx/common-pci.c index 192538a04575..f74a460d4a32 100644 --- a/arch/arm/mach-ixp4xx/common-pci.c +++ b/arch/arm/mach-ixp4xx/common-pci.c @@ -27,6 +27,7 @@ #include <linux/device.h> #include <asm/dma-mapping.h> +#include <asm/cputype.h> #include <asm/io.h> #include <asm/irq.h> #include <asm/sizes.h> @@ -366,15 +367,13 @@ void __init ixp4xx_adjust_zones(int node, unsigned long *zone_size, void __init ixp4xx_pci_preinit(void) { - unsigned long processor_id; - - asm("mrc p15, 0, %0, cr0, cr0, 0;" : "=r"(processor_id) :); + unsigned long cpuid = read_cpuid_id(); /* * Determine which PCI read method to use. * Rev 0 IXP425 requires workaround. */ - if (!(processor_id & 0xf) && cpu_is_ixp42x()) { + if (!(cpuid & 0xf) && cpu_is_ixp42x()) { printk("PCI: IXP42x A0 silicon detected - " "PCI Non-Prefetch Workaround Enabled\n"); ixp4xx_pci_read = ixp4xx_pci_read_errata; diff --git a/arch/arm/mach-ixp4xx/include/mach/cpu.h b/arch/arm/mach-ixp4xx/include/mach/cpu.h index ff8aa2393bf9..51bd69c46d94 100644 --- a/arch/arm/mach-ixp4xx/include/mach/cpu.h +++ b/arch/arm/mach-ixp4xx/include/mach/cpu.h @@ -14,18 +14,19 @@ #ifndef __ASM_ARCH_CPU_H__ #define __ASM_ARCH_CPU_H__ -extern unsigned int processor_id; +#include <asm/cputype.h> + /* Processor id value in CP15 Register 0 */ #define IXP425_PROCESSOR_ID_VALUE 0x690541c0 #define IXP435_PROCESSOR_ID_VALUE 0x69054040 #define IXP465_PROCESSOR_ID_VALUE 0x69054200 #define IXP4XX_PROCESSOR_ID_MASK 0xfffffff0 -#define cpu_is_ixp42x() ((processor_id & IXP4XX_PROCESSOR_ID_MASK) == \ +#define cpu_is_ixp42x() ((read_cpuid_id() & IXP4XX_PROCESSOR_ID_MASK) == \ IXP425_PROCESSOR_ID_VALUE) -#define cpu_is_ixp43x() ((processor_id & IXP4XX_PROCESSOR_ID_MASK) == \ +#define cpu_is_ixp43x() ((read_cpuid_id() & IXP4XX_PROCESSOR_ID_MASK) == \ IXP435_PROCESSOR_ID_VALUE) -#define cpu_is_ixp46x() ((processor_id & IXP4XX_PROCESSOR_ID_MASK) == \ +#define cpu_is_ixp46x() ((read_cpuid_id() & IXP4XX_PROCESSOR_ID_MASK) == \ IXP465_PROCESSOR_ID_VALUE) static inline u32 ixp4xx_read_feature_bits(void) |