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, 8 insertions, 4 deletions

diff --git a/arch/arm/mach-shark/include/mach/hardware.h b/arch/arm/mach-shark/include/mach/hardware.h
index 24639ce5d308..4342931a1502 100644
--- a/arch/arm/mach-shark/include/mach/hardware.h
+++ b/arch/arm/mach-shark/include/mach/hardware.h
@@ -12,8 +12,6 @@
 
 #define UNCACHEABLE_ADDR        0xdf010000
 
-#define PCIBIOS_MIN_IO          0x6000
-#define PCIBIOS_MIN_MEM         0x50000000
 #define PCIMEM_BASE             0xe8000000
 
 #endif
diff --git a/arch/arm/mach-shark/pci.c b/arch/arm/mach-shark/pci.c
index 89d175ce74d2..4aea637a2ddb 100644
--- a/arch/arm/mach-shark/pci.c
+++ b/arch/arm/mach-shark/pci.c
@@ -37,8 +37,14 @@ static struct hw_pci shark_pci __initdata = {
 
 static int __init shark_pci_init(void)
 {
-        if (machine_is_shark())
-                pci_common_init(&shark_pci);
+        if (!machine_is_shark())
+                return;
+
+        pcibios_min_io = 0x6000;
+        pcibios_min_mem = 0x50000000;
+
+        pci_common_init(&shark_pci);
+
         return 0;
 }