Hi,
I believe these changes are needed on Alchemy SoCs in order to
use iomem above 4G with the usual platform_device machinery:
- Set CONFIG_ARCH_PHYS_ADDR_T_64BIT to make resource_size_t 64-bit.
- Increase IOMEM_RESOURCE_END so that platforms can register resources.
--- linux-2.6.33-rc2/arch/mips/Kconfig.orig 2009-12-30 18:06:02.000000000 +0100
+++ linux-2.6.33-rc2/arch/mips/Kconfig 2009-12-30 22:05:38.000000000 +0100
@@ -1725,6 +1725,9 @@
config 64BIT_PHYS_ADDR
bool
+config ARCH_PHYS_ADDR_T_64BIT
+ def_bool 64BIT_PHYS_ADDR
+
config CPU_HAS_SMARTMIPS
depends on SYS_SUPPORTS_SMARTMIPS
bool "Support for the SmartMIPS ASE"
--- linux-2.6.33-rc2/arch/mips/include/asm/mach-au1x00/au1000.h.orig 2009-12-30 19:45:35.000000000 +0100
+++ linux-2.6.33-rc2/arch/mips/include/asm/mach-au1x00/au1000.h 2010-01-03 13:28:50.000000000 +0100
@@ -1728,7 +1728,7 @@
#define IOPORT_RESOURCE_START 0x10000000
#define IOPORT_RESOURCE_END 0xffffffff
#define IOMEM_RESOURCE_START 0x10000000
-#define IOMEM_RESOURCE_END 0xffffffff
+#define IOMEM_RESOURCE_END 0xfffffffffLL
#define PCI_IO_START 0
#define PCI_IO_END 0
