projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 42d226c7 ST |
1 | /* |
| 2 | * This program is free software; you can redistribute it and/or modify it | |
| 3 | * under the terms of the GNU General Public License as published by the | |
| 4 | * Free Software Foundation; either version 2 of the License, or (at your | |
| 5 | * option) any later version. | |
| 6 | */ | |
| 7 | #include <linux/fs.h> | |
| 8 | #include <linux/fcntl.h> | |
| 9 | #include <linux/mm.h> | |
| 10 | ||
| bd92aa01 WZ |
11 | #include <asm/bootinfo.h> |
| 12 | ||
| 5e983ff6 | 13 | #include <loongson.h> |
| bd92aa01 WZ |
14 | |
| 15 | void __init prom_init_memory(void) | |
| 16 | { | |
| 17 | add_memory_region(0x0, (memsize << 20), BOOT_MEM_RAM); | |
| 18 | #ifdef CONFIG_64BIT | |
| 19 | if (highmemsize > 0) | |
| 20 | add_memory_region(0x20000000, highmemsize << 20, BOOT_MEM_RAM); | |
| 21 | #endif /* CONFIG_64BIT */ | |
| 22 | } | |
| 23 | ||
| 42d226c7 ST |
24 | /* override of arch/mips/mm/cache.c: __uncached_access */ |
| 25 | int __uncached_access(struct file *file, unsigned long addr) | |
| 26 | { | |
| 27 | if (file->f_flags & O_SYNC) | |
| 28 | return 1; | |
| 29 | ||
| 30 | /* | |
| 31 | * On the Lemote Loongson 2e system, the peripheral registers | |
| 32 | * reside between 0x1000:0000 and 0x2000:0000. | |
| 33 | */ | |
| 34 | return addr >= __pa(high_memory) || | |
| 35 | ((addr >= 0x10000000) && (addr < 0x20000000)); | |
| 36 | } |