/* * Copyright (C) 2012 Regents of the University of California * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation, version 2. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include <linux/init.h> #include <linux/mm.h> #include <linux/bootmem.h> #include <linux/initrd.h> #include <linux/memblock.h> #include <linux/swap.h> #include <linux/sizes.h> #include <asm/tlbflush.h> #include <asm/sections.h> #include <asm/pgtable.h> #include <asm/io.h> static void __init zone_sizes_init(void) { unsigned long max_zone_pfns[MAX_NR_ZONES] = { 0, }; #ifdef CONFIG_ZONE_DMA32 max_zone_pfns[ZONE_DMA32] = PFN_DOWN(min(4UL * SZ_1G, max_low_pfn)); #endif max_zone_pfns[ZONE_NORMAL] = max_low_pfn; free_area_init_nodes(max_zone_pfns); } void setup_zero_page(void) { memset((void *)empty_zero_page, 0, PAGE_SIZE); } void __init paging_init(void) { setup_zero_page(); local_flush_tlb_all(); zone_sizes_init(); } void __init mem_init(void) { #ifdef CONFIG_FLATMEM BUG_ON(!mem_map); #endif /* CONFIG_FLATMEM */ high_memory = (void *)(__va(PFN_PHYS(max_low_pfn))); free_all_bootmem(); mem_init_print_info(NULL); } void free_initmem(void) { free_initmem_default(0); } #ifdef CONFIG_BLK_DEV_INITRD void free_initrd_mem(unsigned long start, unsigned long end) { } #endif /* CONFIG_BLK_DEV_INITRD */