ARM: convert PCI defines to variables

Convert PCIBIOS_MIN_IO and PCIBIOS_MIN_MEM to variables to allow
multi-platform builds. This also removes the requirement for a platform to
have a mach/hardware.h.

The default values for i/o and mem are 0x1000 and 0x01000000, respectively.
Per Arnd Bergmann, other values are likely to be incorrect, but this commit
does not try to address that issue.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>

2 files changed, 5 insertions, 3 deletions

diff --git a/arch/arm/mach-ixp4xx/common-pci.c b/arch/arm/mach-ixp4xx/common-pci.c
index e9a589395723..3e81000b3e92 100644
--- a/arch/arm/mach-ixp4xx/common-pci.c
+++ b/arch/arm/mach-ixp4xx/common-pci.c
@@ -346,6 +346,11 @@ void __init ixp4xx_pci_preinit(void)
 {
         unsigned long cpuid = read_cpuid_id();
 
+#ifdef CONFIG_IXP4XX_INDIRECT_PCI
+        pcibios_min_mem = 0x10000000; /* 1 GB of indirect PCI MMIO space */
+#else
+        pcibios_min_mem = 0x48000000; /* 64 MB of PCI MMIO space */
+#endif
         /*
          * Determine which PCI read method to use.
          * Rev 0 IXP425 requires workaround.
diff --git a/arch/arm/mach-ixp4xx/include/mach/hardware.h b/arch/arm/mach-ixp4xx/include/mach/hardware.h
index 163e506764de..c30e7e923a73 100644
--- a/arch/arm/mach-ixp4xx/include/mach/hardware.h
+++ b/arch/arm/mach-ixp4xx/include/mach/hardware.h
@@ -17,12 +17,9 @@
 #ifndef __ASM_ARCH_HARDWARE_H__
 #define __ASM_ARCH_HARDWARE_H__
 
-#define PCIBIOS_MIN_IO          0x00001000
 #ifdef CONFIG_IXP4XX_INDIRECT_PCI
-#define PCIBIOS_MIN_MEM         0x10000000 /* 1 GB of indirect PCI MMIO space */
 #define PCIBIOS_MAX_MEM         0x4FFFFFFF
 #else
-#define PCIBIOS_MIN_MEM         0x48000000 /* 64 MB of PCI MMIO space */
 #define PCIBIOS_MAX_MEM         0x4BFFFFFF
 #endif