[PATCH 14/21] MIPS memblock: Alter IO resources initialization method

[Serge Semin]

Replace resource initialization method with one using memblocks.
It fully reflects all available system RAM within memory regions.

Signed-off-by: Serge Semin <fancer.lan...@gmail.com>
---
 arch/mips/kernel/setup.c | 40 +++++++++---------------------
 1 file changed, 12 insertions(+), 28 deletions(-)

diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index b18d38c..8bef2d3 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -868,46 +868,30 @@ static void __init arch_mem_init(char **cmdline_p)
        plat_swiotlb_setup();
 }
 
+/*
+ * Declare memory within system resources
+ */
 static void __init resource_init(void)
 {
-       int i;
+       struct memblock_region *reg;
 
        if (UNCAC_BASE != IO_BASE)
                return;
 
+       /* Kernel code and data need to be registered within proper regions */
        code_resource.start = __pa_symbol(&_text);
        code_resource.end = __pa_symbol(&_etext) - 1;
        data_resource.start = __pa_symbol(&_etext);
        data_resource.end = __pa_symbol(&_edata) - 1;
 
-       for (i = 0; i < boot_mem_map.nr_map; i++) {
+       /* Register RAM resources */
+       for_each_memblock(memory, reg) {
                struct resource *res;
-               unsigned long start, end;
-
-               start = boot_mem_map.map[i].addr;
-               end = boot_mem_map.map[i].addr + boot_mem_map.map[i].size - 1;
-               if (start >= HIGHMEM_START)
-                       continue;
-               if (end >= HIGHMEM_START)
-                       end = HIGHMEM_START - 1;
-
-               res = alloc_bootmem(sizeof(struct resource));
-
-               res->start = start;
-               res->end = end;
-               res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
-
-               switch (boot_mem_map.map[i].type) {
-               case BOOT_MEM_RAM:
-               case BOOT_MEM_INIT_RAM:
-               case BOOT_MEM_ROM_DATA:
-                       res->name = "System RAM";
-                       res->flags |= IORESOURCE_SYSRAM;
-                       break;
-               case BOOT_MEM_RESERVED:
-               default:
-                       res->name = "reserved";
-               }
+               res = memblock_virt_alloc(sizeof(*res), 0);
+               res->name  = "System RAM";
+               res->start = PFN_PHYS(memblock_region_memory_base_pfn(reg));
+               res->end = PFN_PHYS(memblock_region_memory_end_pfn(reg)) - 1;
+               res->flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM;
 
                request_resource(&iomem_resource, res);
 
-- 
2.6.6