ARM: cache-cp15: Use more accurate types

size_t is the canonical type to represent variables that contain a size.
Use it instead of signed integer. Physical addresses can be larger than
32-bit, so use a more appropriate type for them as well. phys_addr_t is
a type that is 32-bit on systems that use 32-bit addresses and 64-bit if
the system is 64-bit or uses a form of physical address extension to use
a larger address space on 32-bit systems. Using these types the same API
can be implemented on a wider range of systems.

Signed-off-by: Thierry Reding <treding@nvidia.com>

arch/arm/include/asm/system.h

@@ -201,7 +201,7 @@ enum {
  * \param size		size of memory region to change
  * \param option	dcache option to select
  */
-void mmu_set_region_dcache_behaviour(u32 start, int size,
+void mmu_set_region_dcache_behaviour(phys_addr_t start, size_t size,
 				     enum dcache_option option);
 
 /**

arch/arm/lib/cache-cp15.c

@@ -47,15 +47,15 @@ __weak void mmu_page_table_flush(unsigned long start, unsigned long stop)
 	debug("%s: Warning: not implemented\n", __func__);
 }
 
-void mmu_set_region_dcache_behaviour(u32 start, int size,
+void mmu_set_region_dcache_behaviour(phys_addr_t start, size_t size,
 				     enum dcache_option option)
 {
 	u32 *page_table = (u32 *)gd->arch.tlb_addr;
-	u32 upto, end;
+	unsigned long upto, end;
 
 	end = ALIGN(start + size, MMU_SECTION_SIZE) >> MMU_SECTION_SHIFT;
 	start = start >> MMU_SECTION_SHIFT;
-	debug("%s: start=%x, size=%x, option=%d\n", __func__, start, size,
+	debug("%s: start=%pa, size=%zu, option=%d\n", __func__, &start, size,
 	      option);
 	for (upto = start; upto < end; upto++)
 		set_section_dcache(upto, option);