On 08/18/2014 02:00 AM, Thierry Reding wrote:
From: Thierry Reding treding@nvidia.com
size is always non-negative, so it should be unsigned, whereas the address and size can be larger than 32 bit on 64-bit architectures. Change the mmu_set_region_dcache_behaviour() to use these types in anticipation of making the API available on other architectures.
diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h
-void mmu_set_region_dcache_behaviour(u32 start, int size, +void mmu_set_region_dcache_behaviour(unsigned long start, unsigned long size, enum dcache_option option);
If we were to use LPAE on a 32-bit system, physical addresses could be more than 32-bit. That would imply we should create a physaddr_t type rather than relying on unsigned long. Still, I suppose since U-Boot just maps RAM (and everything else) 1:1, we'd never use RAM beyond 4GiB, so LPAE actually isn't that interesting...