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authorTejun Heo <tj@kernel.org>2009-08-14 01:41:02 -0400
committerTejun Heo <tj@kernel.org>2009-08-14 01:45:31 -0400
commit384be2b18a5f9475eab9ca2bdfa95cc1a04ef59c (patch)
tree04c93f391a1b65c8bf8d7ba8643c07d26c26590a /arch/mips/ar7/memory.c
parenta76761b621bcd8336065c4fe3a74f046858bc34c (diff)
parent142d44b0dd6741a64a7bdbe029110e7c1dcf1d23 (diff)
Merge branch 'percpu-for-linus' into percpu-for-next
Conflicts: arch/sparc/kernel/smp_64.c arch/x86/kernel/cpu/perf_counter.c arch/x86/kernel/setup_percpu.c drivers/cpufreq/cpufreq_ondemand.c mm/percpu.c Conflicts in core and arch percpu codes are mostly from commit ed78e1e078dd44249f88b1dd8c76dafb39567161 which substituted many num_possible_cpus() with nr_cpu_ids. As for-next branch has moved all the first chunk allocators into mm/percpu.c, the changes are moved from arch code to mm/percpu.c. Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'arch/mips/ar7/memory.c')
-rw-r--r--arch/mips/ar7/memory.c72
1 files changed, 72 insertions, 0 deletions
diff --git a/arch/mips/ar7/memory.c b/arch/mips/ar7/memory.c
new file mode 100644
index 000000000000..696c723dc6d4
--- /dev/null
+++ b/arch/mips/ar7/memory.c
@@ -0,0 +1,72 @@
1/*
2 * Copyright (C) 2007 Felix Fietkau <nbd@openwrt.org>
3 * Copyright (C) 2007 Eugene Konev <ejka@openwrt.org>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19#include <linux/bootmem.h>
20#include <linux/init.h>
21#include <linux/mm.h>
22#include <linux/module.h>
23#include <linux/pfn.h>
24#include <linux/proc_fs.h>
25#include <linux/string.h>
26#include <linux/swap.h>
27
28#include <asm/bootinfo.h>
29#include <asm/page.h>
30#include <asm/sections.h>
31
32#include <asm/mach-ar7/ar7.h>
33#include <asm/mips-boards/prom.h>
34
35static int __init memsize(void)
36{
37 u32 size = (64 << 20);
38 u32 *addr = (u32 *)KSEG1ADDR(AR7_SDRAM_BASE + size - 4);
39 u32 *kernel_end = (u32 *)KSEG1ADDR(CPHYSADDR((u32)&_end));
40 u32 *tmpaddr = addr;
41
42 while (tmpaddr > kernel_end) {
43 *tmpaddr = (u32)tmpaddr;
44 size >>= 1;
45 tmpaddr -= size >> 2;
46 }
47
48 do {
49 tmpaddr += size >> 2;
50 if (*tmpaddr != (u32)tmpaddr)
51 break;
52 size <<= 1;
53 } while (size < (64 << 20));
54
55 writel((u32)tmpaddr, &addr);
56
57 return size;
58}
59
60void __init prom_meminit(void)
61{
62 unsigned long pages;
63
64 pages = memsize() >> PAGE_SHIFT;
65 add_memory_region(PHYS_OFFSET, pages << PAGE_SHIFT,
66 BOOT_MEM_RAM);
67}
68
69void __init prom_free_prom_memory(void)
70{
71 /* Nothing to free */
72}