forked from luck/tmp_suning_uos_patched
85749d24bc
To share common loongson source code between all of the loongson-based machines. there is a need to split it out of the fuloong-2e/ directory. at the same time, other according tuning is needed. the machine-specific parts are defined as macros in relative header file, pci.h, mem.h, machine.h. Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
36 lines
929 B
C
36 lines
929 B
C
/*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/fs.h>
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#include <linux/fcntl.h>
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#include <linux/mm.h>
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#include <asm/bootinfo.h>
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#include <loongson.h>
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#include <mem.h>
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void __init prom_init_memory(void)
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{
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add_memory_region(0x0, (memsize << 20), BOOT_MEM_RAM);
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#ifdef CONFIG_64BIT
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if (highmemsize > 0)
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add_memory_region(LOONGSON_HIGHMEM_START,
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highmemsize << 20, BOOT_MEM_RAM);
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#endif /* CONFIG_64BIT */
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}
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/* override of arch/mips/mm/cache.c: __uncached_access */
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int __uncached_access(struct file *file, unsigned long addr)
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{
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if (file->f_flags & O_SYNC)
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return 1;
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return addr >= __pa(high_memory) ||
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((addr >= LOONGSON_MMIO_MEM_START) &&
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(addr < LOONGSON_MMIO_MEM_END));
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}
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