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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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76d2a0493a
This contains the various __init C functions, the initial assembly kernel entry point, and the code to reset the system. When a file was init-related this patch contains the entire file. Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>
71 lines
1.6 KiB
C
71 lines
1.6 KiB
C
/*
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* Copyright (C) 2012 Regents of the University of California
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation, version 2.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/init.h>
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#include <linux/mm.h>
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#include <linux/bootmem.h>
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#include <linux/initrd.h>
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#include <linux/memblock.h>
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#include <linux/swap.h>
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#include <asm/tlbflush.h>
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#include <asm/sections.h>
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#include <asm/pgtable.h>
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#include <asm/io.h>
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static void __init zone_sizes_init(void)
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{
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unsigned long zones_size[MAX_NR_ZONES];
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memset(zones_size, 0, sizeof(zones_size));
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zones_size[ZONE_NORMAL] = max_mapnr;
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free_area_init_node(0, zones_size, pfn_base, NULL);
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}
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void setup_zero_page(void)
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{
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memset((void *)empty_zero_page, 0, PAGE_SIZE);
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}
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void __init paging_init(void)
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{
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init_mm.pgd = (pgd_t *)pfn_to_virt(csr_read(sptbr));
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setup_zero_page();
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local_flush_tlb_all();
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zone_sizes_init();
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}
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void __init mem_init(void)
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{
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#ifdef CONFIG_FLATMEM
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BUG_ON(!mem_map);
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#endif /* CONFIG_FLATMEM */
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high_memory = (void *)(__va(PFN_PHYS(max_low_pfn)));
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free_all_bootmem();
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mem_init_print_info(NULL);
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}
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void free_initmem(void)
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{
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free_initmem_default(0);
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}
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#ifdef CONFIG_BLK_DEV_INITRD
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void free_initrd_mem(unsigned long start, unsigned long end)
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{
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}
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#endif /* CONFIG_BLK_DEV_INITRD */
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