2007-03-28 14:38:13 +07:00
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/*
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* linux/arch/sh/mm/init.c
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2005-04-17 05:20:36 +07:00
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*
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* Copyright (C) 1999 Niibe Yutaka
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2011-01-07 13:19:56 +07:00
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* Copyright (C) 2002 - 2011 Paul Mundt
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2005-04-17 05:20:36 +07:00
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*
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* Based on linux/arch/i386/mm/init.c:
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* Copyright (C) 1995 Linus Torvalds
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*/
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#include <linux/mm.h>
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#include <linux/swap.h>
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#include <linux/init.h>
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include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 15:04:11 +07:00
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#include <linux/gfp.h>
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2005-04-17 05:20:36 +07:00
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#include <linux/bootmem.h>
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2006-09-27 16:20:58 +07:00
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#include <linux/proc_fs.h>
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2007-05-14 08:48:01 +07:00
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#include <linux/pagemap.h>
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2007-03-28 14:38:13 +07:00
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#include <linux/percpu.h>
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#include <linux/io.h>
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2010-07-12 11:36:09 +07:00
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#include <linux/memblock.h>
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2009-10-27 15:07:45 +07:00
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#include <linux/dma-mapping.h>
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2005-04-17 05:20:36 +07:00
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#include <asm/mmu_context.h>
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2010-05-11 11:32:19 +07:00
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#include <asm/mmzone.h>
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2010-05-18 12:53:23 +07:00
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#include <asm/kexec.h>
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2005-04-17 05:20:36 +07:00
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#include <asm/tlb.h>
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#include <asm/cacheflush.h>
|
2007-06-06 10:23:06 +07:00
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#include <asm/sections.h>
|
2010-05-11 11:32:19 +07:00
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#include <asm/setup.h>
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2005-04-17 05:20:36 +07:00
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#include <asm/cache.h>
|
2010-02-12 13:40:00 +07:00
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#include <asm/sizes.h>
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2005-04-17 05:20:36 +07:00
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DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
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pgd_t swapper_pg_dir[PTRS_PER_PGD];
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2008-09-05 14:06:42 +07:00
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2010-05-10 13:39:05 +07:00
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void __init generic_mem_init(void)
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{
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2010-07-12 11:36:09 +07:00
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memblock_add(__MEMORY_START, __MEMORY_SIZE);
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2010-05-10 13:39:05 +07:00
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}
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2010-05-11 11:32:19 +07:00
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void __init __weak plat_mem_setup(void)
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{
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/* Nothing to see here, move along. */
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}
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2006-12-07 16:07:27 +07:00
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#ifdef CONFIG_MMU
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2009-11-18 05:03:41 +07:00
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static pte_t *__get_pte_phys(unsigned long addr)
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2005-04-17 05:20:36 +07:00
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{
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pgd_t *pgd;
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2006-09-27 13:13:36 +07:00
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pud_t *pud;
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2005-04-17 05:20:36 +07:00
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pmd_t *pmd;
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2006-11-21 13:38:05 +07:00
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pgd = pgd_offset_k(addr);
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2005-04-17 05:20:36 +07:00
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if (pgd_none(*pgd)) {
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pgd_ERROR(*pgd);
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2009-11-18 05:03:41 +07:00
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return NULL;
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2005-04-17 05:20:36 +07:00
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}
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2006-11-21 13:38:05 +07:00
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pud = pud_alloc(NULL, pgd, addr);
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if (unlikely(!pud)) {
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pud_ERROR(*pud);
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2009-11-18 05:03:41 +07:00
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return NULL;
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2006-09-27 13:13:36 +07:00
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}
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2006-11-21 13:38:05 +07:00
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pmd = pmd_alloc(NULL, pud, addr);
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if (unlikely(!pmd)) {
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pmd_ERROR(*pmd);
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2009-11-18 05:03:41 +07:00
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return NULL;
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2005-04-17 05:20:36 +07:00
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}
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2010-06-21 14:26:27 +07:00
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return pte_offset_kernel(pmd, addr);
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2009-11-18 05:03:41 +07:00
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}
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static void set_pte_phys(unsigned long addr, unsigned long phys, pgprot_t prot)
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{
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pte_t *pte;
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pte = __get_pte_phys(addr);
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2005-04-17 05:20:36 +07:00
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if (!pte_none(*pte)) {
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pte_ERROR(*pte);
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return;
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}
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set_pte(pte, pfn_pte(phys >> PAGE_SHIFT, prot));
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2009-06-19 13:37:11 +07:00
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local_flush_tlb_one(get_asid(), addr);
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2009-11-18 05:03:41 +07:00
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if (pgprot_val(prot) & _PAGE_WIRED)
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tlb_wire_entry(NULL, addr, *pte);
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}
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static void clear_pte_phys(unsigned long addr, pgprot_t prot)
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{
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pte_t *pte;
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pte = __get_pte_phys(addr);
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if (pgprot_val(prot) & _PAGE_WIRED)
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tlb_unwire_entry();
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set_pte(pte, pfn_pte(0, __pgprot(0)));
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local_flush_tlb_one(get_asid(), addr);
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2005-04-17 05:20:36 +07:00
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}
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void __set_fixmap(enum fixed_addresses idx, unsigned long phys, pgprot_t prot)
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{
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unsigned long address = __fix_to_virt(idx);
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if (idx >= __end_of_fixed_addresses) {
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BUG();
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return;
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}
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set_pte_phys(address, phys, prot);
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}
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2007-11-30 15:59:55 +07:00
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2009-11-18 05:03:41 +07:00
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void __clear_fixmap(enum fixed_addresses idx, pgprot_t prot)
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{
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unsigned long address = __fix_to_virt(idx);
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if (idx >= __end_of_fixed_addresses) {
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BUG();
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return;
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}
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clear_pte_phys(address, prot);
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}
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2010-06-21 14:26:27 +07:00
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static pmd_t * __init one_md_table_init(pud_t *pud)
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{
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if (pud_none(*pud)) {
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pmd_t *pmd;
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pmd = alloc_bootmem_pages(PAGE_SIZE);
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pud_populate(&init_mm, pud, pmd);
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BUG_ON(pmd != pmd_offset(pud, 0));
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}
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return pmd_offset(pud, 0);
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}
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static pte_t * __init one_page_table_init(pmd_t *pmd)
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{
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if (pmd_none(*pmd)) {
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pte_t *pte;
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pte = alloc_bootmem_pages(PAGE_SIZE);
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pmd_populate_kernel(&init_mm, pmd, pte);
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BUG_ON(pte != pte_offset_kernel(pmd, 0));
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}
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return pte_offset_kernel(pmd, 0);
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}
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static pte_t * __init page_table_kmap_check(pte_t *pte, pmd_t *pmd,
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unsigned long vaddr, pte_t *lastpte)
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{
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return pte;
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}
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2007-11-30 15:59:55 +07:00
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void __init page_table_range_init(unsigned long start, unsigned long end,
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pgd_t *pgd_base)
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{
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pgd_t *pgd;
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pud_t *pud;
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pmd_t *pmd;
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2010-06-21 14:26:27 +07:00
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pte_t *pte = NULL;
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2009-09-03 15:21:10 +07:00
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int i, j, k;
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2007-11-30 15:59:55 +07:00
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unsigned long vaddr;
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2009-09-03 15:21:10 +07:00
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vaddr = start;
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i = __pgd_offset(vaddr);
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j = __pud_offset(vaddr);
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k = __pmd_offset(vaddr);
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pgd = pgd_base + i;
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for ( ; (i < PTRS_PER_PGD) && (vaddr != end); pgd++, i++) {
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pud = (pud_t *)pgd;
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for ( ; (j < PTRS_PER_PUD) && (vaddr != end); pud++, j++) {
|
2010-06-21 14:26:27 +07:00
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pmd = one_md_table_init(pud);
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#ifndef __PAGETABLE_PMD_FOLDED
|
2009-12-13 21:38:50 +07:00
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pmd += k;
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#endif
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2009-09-03 15:21:10 +07:00
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for (; (k < PTRS_PER_PMD) && (vaddr != end); pmd++, k++) {
|
2010-06-21 14:26:27 +07:00
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pte = page_table_kmap_check(one_page_table_init(pmd),
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pmd, vaddr, pte);
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2009-09-03 15:21:10 +07:00
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vaddr += PMD_SIZE;
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}
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k = 0;
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2007-11-30 15:59:55 +07:00
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}
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2009-09-03 15:21:10 +07:00
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j = 0;
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2007-11-30 15:59:55 +07:00
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}
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}
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2006-12-07 16:07:27 +07:00
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#endif /* CONFIG_MMU */
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2005-04-17 05:20:36 +07:00
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2010-05-11 11:32:19 +07:00
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void __init allocate_pgdat(unsigned int nid)
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{
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unsigned long start_pfn, end_pfn;
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#ifdef CONFIG_NEED_MULTIPLE_NODES
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unsigned long phys;
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#endif
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get_pfn_range_for_nid(nid, &start_pfn, &end_pfn);
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#ifdef CONFIG_NEED_MULTIPLE_NODES
|
2010-07-12 11:36:09 +07:00
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phys = __memblock_alloc_base(sizeof(struct pglist_data),
|
2010-05-11 11:32:19 +07:00
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SMP_CACHE_BYTES, end_pfn << PAGE_SHIFT);
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/* Retry with all of system memory */
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if (!phys)
|
2010-07-12 11:36:09 +07:00
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phys = __memblock_alloc_base(sizeof(struct pglist_data),
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|
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SMP_CACHE_BYTES, memblock_end_of_DRAM());
|
2010-05-11 11:32:19 +07:00
|
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|
if (!phys)
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|
panic("Can't allocate pgdat for node %d\n", nid);
|
|
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NODE_DATA(nid) = __va(phys);
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memset(NODE_DATA(nid), 0, sizeof(struct pglist_data));
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NODE_DATA(nid)->bdata = &bootmem_node_data[nid];
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#endif
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NODE_DATA(nid)->node_start_pfn = start_pfn;
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|
NODE_DATA(nid)->node_spanned_pages = end_pfn - start_pfn;
|
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|
}
|
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|
static void __init bootmem_init_one_node(unsigned int nid)
|
|
|
|
{
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|
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|
unsigned long total_pages, paddr;
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unsigned long end_pfn;
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struct pglist_data *p;
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p = NODE_DATA(nid);
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|
|
/* Nothing to do.. */
|
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|
if (!p->node_spanned_pages)
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|
return;
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|
end_pfn = p->node_start_pfn + p->node_spanned_pages;
|
|
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total_pages = bootmem_bootmap_pages(p->node_spanned_pages);
|
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|
2010-07-12 11:36:09 +07:00
|
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|
paddr = memblock_alloc(total_pages << PAGE_SHIFT, PAGE_SIZE);
|
2010-05-11 11:32:19 +07:00
|
|
|
if (!paddr)
|
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|
|
panic("Can't allocate bootmap for nid[%d]\n", nid);
|
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|
init_bootmem_node(p, paddr >> PAGE_SHIFT, p->node_start_pfn, end_pfn);
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free_bootmem_with_active_regions(nid, end_pfn);
|
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|
|
/*
|
|
|
|
* XXX Handle initial reservations for the system memory node
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* only for the moment, we'll refactor this later for handling
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* reservations in other nodes.
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|
*/
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|
if (nid == 0) {
|
2010-08-04 11:11:04 +07:00
|
|
|
struct memblock_region *reg;
|
|
|
|
|
2010-05-11 11:32:19 +07:00
|
|
|
/* Reserve the sections we're already using. */
|
2010-08-04 11:11:04 +07:00
|
|
|
for_each_memblock(reserved, reg) {
|
|
|
|
reserve_bootmem(reg->base, reg->size, BOOTMEM_DEFAULT);
|
|
|
|
}
|
2010-05-11 11:32:19 +07:00
|
|
|
}
|
|
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|
|
sparse_memory_present_with_active_regions(nid);
|
|
|
|
}
|
|
|
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|
|
|
|
static void __init do_init_bootmem(void)
|
|
|
|
{
|
2010-08-04 11:11:04 +07:00
|
|
|
struct memblock_region *reg;
|
2010-05-11 11:32:19 +07:00
|
|
|
int i;
|
|
|
|
|
|
|
|
/* Add active regions with valid PFNs. */
|
2010-08-04 11:11:04 +07:00
|
|
|
for_each_memblock(memory, reg) {
|
2010-05-11 11:32:19 +07:00
|
|
|
unsigned long start_pfn, end_pfn;
|
2010-10-13 04:07:09 +07:00
|
|
|
start_pfn = memblock_region_memory_base_pfn(reg);
|
|
|
|
end_pfn = memblock_region_memory_end_pfn(reg);
|
2010-05-11 11:32:19 +07:00
|
|
|
__add_active_range(0, start_pfn, end_pfn);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* All of system RAM sits in node 0 for the non-NUMA case */
|
|
|
|
allocate_pgdat(0);
|
|
|
|
node_set_online(0);
|
|
|
|
|
|
|
|
plat_mem_setup();
|
|
|
|
|
|
|
|
for_each_online_node(i)
|
|
|
|
bootmem_init_one_node(i);
|
|
|
|
|
|
|
|
sparse_init();
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __init early_reserve_mem(void)
|
|
|
|
{
|
|
|
|
unsigned long start_pfn;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Partially used pages are not usable - thus
|
|
|
|
* we are rounding upwards:
|
|
|
|
*/
|
|
|
|
start_pfn = PFN_UP(__pa(_end));
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Reserve the kernel text and Reserve the bootmem bitmap. We do
|
|
|
|
* this in two steps (first step was init_bootmem()), because
|
|
|
|
* this catches the (definitely buggy) case of us accidentally
|
|
|
|
* initializing the bootmem allocator with an invalid RAM area.
|
|
|
|
*/
|
2010-07-12 11:36:09 +07:00
|
|
|
memblock_reserve(__MEMORY_START + CONFIG_ZERO_PAGE_OFFSET,
|
2010-05-11 11:32:19 +07:00
|
|
|
(PFN_PHYS(start_pfn) + PAGE_SIZE - 1) -
|
|
|
|
(__MEMORY_START + CONFIG_ZERO_PAGE_OFFSET));
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Reserve physical pages below CONFIG_ZERO_PAGE_OFFSET.
|
|
|
|
*/
|
|
|
|
if (CONFIG_ZERO_PAGE_OFFSET != 0)
|
2010-07-12 11:36:09 +07:00
|
|
|
memblock_reserve(__MEMORY_START, CONFIG_ZERO_PAGE_OFFSET);
|
2010-05-11 11:32:19 +07:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Handle additional early reservations
|
|
|
|
*/
|
|
|
|
check_for_initrd();
|
|
|
|
reserve_crashkernel();
|
|
|
|
}
|
|
|
|
|
2005-04-17 05:20:36 +07:00
|
|
|
void __init paging_init(void)
|
|
|
|
{
|
2007-06-06 10:09:54 +07:00
|
|
|
unsigned long max_zone_pfns[MAX_NR_ZONES];
|
2009-09-03 15:21:10 +07:00
|
|
|
unsigned long vaddr, end;
|
2007-03-28 14:38:13 +07:00
|
|
|
int nid;
|
2005-04-17 05:20:36 +07:00
|
|
|
|
2010-07-12 11:36:09 +07:00
|
|
|
memblock_init();
|
2010-05-11 11:32:19 +07:00
|
|
|
sh_mv.mv_mem_init();
|
|
|
|
|
|
|
|
early_reserve_mem();
|
|
|
|
|
2011-01-07 13:19:56 +07:00
|
|
|
/*
|
|
|
|
* Once the early reservations are out of the way, give the
|
|
|
|
* platforms a chance to kick out some memory.
|
|
|
|
*/
|
|
|
|
if (sh_mv.mv_mem_reserve)
|
|
|
|
sh_mv.mv_mem_reserve();
|
|
|
|
|
2010-07-12 11:36:09 +07:00
|
|
|
memblock_enforce_memory_limit(memory_limit);
|
|
|
|
memblock_analyze();
|
2010-05-11 11:32:19 +07:00
|
|
|
|
2010-07-12 11:36:09 +07:00
|
|
|
memblock_dump_all();
|
2010-05-11 11:32:19 +07:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Determine low and high memory ranges:
|
|
|
|
*/
|
2010-07-12 11:36:09 +07:00
|
|
|
max_low_pfn = max_pfn = memblock_end_of_DRAM() >> PAGE_SHIFT;
|
2010-05-11 11:32:19 +07:00
|
|
|
min_low_pfn = __MEMORY_START >> PAGE_SHIFT;
|
|
|
|
|
|
|
|
nodes_clear(node_online_map);
|
|
|
|
|
|
|
|
memory_start = (unsigned long)__va(__MEMORY_START);
|
2010-07-12 11:36:09 +07:00
|
|
|
memory_end = memory_start + (memory_limit ?: memblock_phys_mem_size());
|
2010-05-11 11:32:19 +07:00
|
|
|
|
|
|
|
uncached_init();
|
|
|
|
pmb_init();
|
|
|
|
do_init_bootmem();
|
|
|
|
ioremap_fixed_init();
|
|
|
|
|
2007-03-28 14:38:13 +07:00
|
|
|
/* We don't need to map the kernel through the TLB, as
|
|
|
|
* it is permanatly mapped using P1. So clear the
|
|
|
|
* entire pgd. */
|
|
|
|
memset(swapper_pg_dir, 0, sizeof(swapper_pg_dir));
|
2005-04-17 05:20:36 +07:00
|
|
|
|
2006-11-21 11:53:44 +07:00
|
|
|
/* Set an initial value for the MMU.TTB so we don't have to
|
|
|
|
* check for a null value. */
|
|
|
|
set_TTB(swapper_pg_dir);
|
|
|
|
|
2008-11-10 18:00:45 +07:00
|
|
|
/*
|
|
|
|
* Populate the relevant portions of swapper_pg_dir so that
|
2007-11-30 15:59:55 +07:00
|
|
|
* we can use the fixmap entries without calling kmalloc.
|
2008-11-10 18:00:45 +07:00
|
|
|
* pte's will be filled in by __set_fixmap().
|
|
|
|
*/
|
|
|
|
vaddr = __fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK;
|
2009-09-03 15:21:10 +07:00
|
|
|
end = (FIXADDR_TOP + PMD_SIZE - 1) & PMD_MASK;
|
|
|
|
page_table_range_init(vaddr, end, swapper_pg_dir);
|
2008-11-10 18:00:45 +07:00
|
|
|
|
|
|
|
kmap_coherent_init();
|
2007-11-30 15:59:55 +07:00
|
|
|
|
2007-06-06 10:09:54 +07:00
|
|
|
memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
|
|
|
|
|
2007-03-28 14:38:13 +07:00
|
|
|
for_each_online_node(nid) {
|
|
|
|
pg_data_t *pgdat = NODE_DATA(nid);
|
|
|
|
unsigned long low, start_pfn;
|
|
|
|
|
2008-07-24 11:28:09 +07:00
|
|
|
start_pfn = pgdat->bdata->node_min_pfn;
|
2007-03-28 14:38:13 +07:00
|
|
|
low = pgdat->bdata->node_low_pfn;
|
|
|
|
|
2007-06-06 10:09:54 +07:00
|
|
|
if (max_zone_pfns[ZONE_NORMAL] < low)
|
|
|
|
max_zone_pfns[ZONE_NORMAL] = low;
|
2007-03-28 14:38:13 +07:00
|
|
|
|
|
|
|
printk("Node %u: start_pfn = 0x%lx, low = 0x%lx\n",
|
|
|
|
nid, start_pfn, low);
|
|
|
|
}
|
2007-06-06 10:09:54 +07:00
|
|
|
|
|
|
|
free_area_init_nodes(max_zone_pfns);
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
|
|
|
|
2009-10-27 15:07:45 +07:00
|
|
|
/*
|
|
|
|
* Early initialization for any I/O MMUs we might have.
|
|
|
|
*/
|
|
|
|
static void __init iommu_init(void)
|
|
|
|
{
|
|
|
|
no_iommu_init();
|
|
|
|
}
|
|
|
|
|
2010-01-18 19:08:32 +07:00
|
|
|
unsigned int mem_init_done = 0;
|
|
|
|
|
2005-04-17 05:20:36 +07:00
|
|
|
void __init mem_init(void)
|
|
|
|
{
|
2007-05-23 15:48:36 +07:00
|
|
|
int codesize, datasize, initsize;
|
2007-03-28 14:38:13 +07:00
|
|
|
int nid;
|
2005-04-17 05:20:36 +07:00
|
|
|
|
2009-10-27 15:07:45 +07:00
|
|
|
iommu_init();
|
|
|
|
|
2007-06-06 10:09:54 +07:00
|
|
|
num_physpages = 0;
|
|
|
|
high_memory = NULL;
|
|
|
|
|
2007-03-28 14:38:13 +07:00
|
|
|
for_each_online_node(nid) {
|
|
|
|
pg_data_t *pgdat = NODE_DATA(nid);
|
|
|
|
unsigned long node_pages = 0;
|
|
|
|
void *node_high_memory;
|
|
|
|
|
|
|
|
num_physpages += pgdat->node_present_pages;
|
|
|
|
|
|
|
|
if (pgdat->node_spanned_pages)
|
|
|
|
node_pages = free_all_bootmem_node(pgdat);
|
|
|
|
|
|
|
|
totalram_pages += node_pages;
|
2005-04-17 05:20:36 +07:00
|
|
|
|
2007-06-06 10:09:54 +07:00
|
|
|
node_high_memory = (void *)__va((pgdat->node_start_pfn +
|
|
|
|
pgdat->node_spanned_pages) <<
|
|
|
|
PAGE_SHIFT);
|
2007-03-28 14:38:13 +07:00
|
|
|
if (node_high_memory > high_memory)
|
|
|
|
high_memory = node_high_memory;
|
|
|
|
}
|
2005-04-17 05:20:36 +07:00
|
|
|
|
2009-08-15 10:29:49 +07:00
|
|
|
/* Set this up early, so we can take care of the zero page */
|
|
|
|
cpu_cache_init();
|
|
|
|
|
2005-04-17 05:20:36 +07:00
|
|
|
/* clear the zero-page */
|
|
|
|
memset(empty_zero_page, 0, PAGE_SIZE);
|
|
|
|
__flush_wback_region(empty_zero_page, PAGE_SIZE);
|
|
|
|
|
2010-01-20 16:48:17 +07:00
|
|
|
vsyscall_init();
|
|
|
|
|
2005-04-17 05:20:36 +07:00
|
|
|
codesize = (unsigned long) &_etext - (unsigned long) &_text;
|
|
|
|
datasize = (unsigned long) &_edata - (unsigned long) &_etext;
|
|
|
|
initsize = (unsigned long) &__init_end - (unsigned long) &__init_begin;
|
|
|
|
|
2006-09-27 16:20:58 +07:00
|
|
|
printk(KERN_INFO "Memory: %luk/%luk available (%dk kernel code, "
|
2007-05-23 15:48:36 +07:00
|
|
|
"%dk data, %dk init)\n",
|
2009-09-22 07:02:36 +07:00
|
|
|
nr_free_pages() << (PAGE_SHIFT-10),
|
2007-06-06 10:09:54 +07:00
|
|
|
num_physpages << (PAGE_SHIFT-10),
|
2005-04-17 05:20:36 +07:00
|
|
|
codesize >> 10,
|
|
|
|
datasize >> 10,
|
|
|
|
initsize >> 10);
|
|
|
|
|
2010-01-20 16:48:17 +07:00
|
|
|
printk(KERN_INFO "virtual kernel memory layout:\n"
|
|
|
|
" fixmap : 0x%08lx - 0x%08lx (%4ld kB)\n"
|
|
|
|
#ifdef CONFIG_HIGHMEM
|
|
|
|
" pkmap : 0x%08lx - 0x%08lx (%4ld kB)\n"
|
|
|
|
#endif
|
|
|
|
" vmalloc : 0x%08lx - 0x%08lx (%4ld MB)\n"
|
2010-01-21 13:54:31 +07:00
|
|
|
" lowmem : 0x%08lx - 0x%08lx (%4ld MB) (cached)\n"
|
2010-02-12 13:40:00 +07:00
|
|
|
#ifdef CONFIG_UNCACHED_MAPPING
|
2010-01-21 13:54:31 +07:00
|
|
|
" : 0x%08lx - 0x%08lx (%4ld MB) (uncached)\n"
|
2010-02-12 13:40:00 +07:00
|
|
|
#endif
|
2010-01-20 16:48:17 +07:00
|
|
|
" .init : 0x%08lx - 0x%08lx (%4ld kB)\n"
|
|
|
|
" .data : 0x%08lx - 0x%08lx (%4ld kB)\n"
|
|
|
|
" .text : 0x%08lx - 0x%08lx (%4ld kB)\n",
|
|
|
|
FIXADDR_START, FIXADDR_TOP,
|
|
|
|
(FIXADDR_TOP - FIXADDR_START) >> 10,
|
|
|
|
|
|
|
|
#ifdef CONFIG_HIGHMEM
|
|
|
|
PKMAP_BASE, PKMAP_BASE+LAST_PKMAP*PAGE_SIZE,
|
|
|
|
(LAST_PKMAP*PAGE_SIZE) >> 10,
|
|
|
|
#endif
|
|
|
|
|
|
|
|
(unsigned long)VMALLOC_START, VMALLOC_END,
|
|
|
|
(VMALLOC_END - VMALLOC_START) >> 20,
|
|
|
|
|
|
|
|
(unsigned long)memory_start, (unsigned long)high_memory,
|
|
|
|
((unsigned long)high_memory - (unsigned long)memory_start) >> 20,
|
|
|
|
|
2010-02-12 13:40:00 +07:00
|
|
|
#ifdef CONFIG_UNCACHED_MAPPING
|
2010-02-17 14:28:00 +07:00
|
|
|
uncached_start, uncached_end, uncached_size >> 20,
|
2010-02-12 13:40:00 +07:00
|
|
|
#endif
|
2010-01-21 13:54:31 +07:00
|
|
|
|
2010-01-20 16:48:17 +07:00
|
|
|
(unsigned long)&__init_begin, (unsigned long)&__init_end,
|
|
|
|
((unsigned long)&__init_end -
|
|
|
|
(unsigned long)&__init_begin) >> 10,
|
|
|
|
|
|
|
|
(unsigned long)&_etext, (unsigned long)&_edata,
|
|
|
|
((unsigned long)&_edata - (unsigned long)&_etext) >> 10,
|
|
|
|
|
|
|
|
(unsigned long)&_text, (unsigned long)&_etext,
|
|
|
|
((unsigned long)&_etext - (unsigned long)&_text) >> 10);
|
2010-01-18 19:08:32 +07:00
|
|
|
|
|
|
|
mem_init_done = 1;
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
|
|
|
|
|
|
|
void free_initmem(void)
|
|
|
|
{
|
|
|
|
unsigned long addr;
|
2005-11-07 15:58:24 +07:00
|
|
|
|
2005-04-17 05:20:36 +07:00
|
|
|
addr = (unsigned long)(&__init_begin);
|
|
|
|
for (; addr < (unsigned long)(&__init_end); addr += PAGE_SIZE) {
|
|
|
|
ClearPageReserved(virt_to_page(addr));
|
2006-03-22 15:08:40 +07:00
|
|
|
init_page_count(virt_to_page(addr));
|
2005-04-17 05:20:36 +07:00
|
|
|
free_page(addr);
|
|
|
|
totalram_pages++;
|
|
|
|
}
|
2007-06-06 10:23:06 +07:00
|
|
|
printk("Freeing unused kernel memory: %ldk freed\n",
|
|
|
|
((unsigned long)&__init_end -
|
|
|
|
(unsigned long)&__init_begin) >> 10);
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef CONFIG_BLK_DEV_INITRD
|
|
|
|
void free_initrd_mem(unsigned long start, unsigned long end)
|
|
|
|
{
|
|
|
|
unsigned long p;
|
|
|
|
for (p = start; p < end; p += PAGE_SIZE) {
|
|
|
|
ClearPageReserved(virt_to_page(p));
|
2006-03-22 15:08:40 +07:00
|
|
|
init_page_count(virt_to_page(p));
|
2005-04-17 05:20:36 +07:00
|
|
|
free_page(p);
|
|
|
|
totalram_pages++;
|
|
|
|
}
|
2007-06-06 10:09:54 +07:00
|
|
|
printk("Freeing initrd memory: %ldk freed\n", (end - start) >> 10);
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
|
|
|
#endif
|
2007-06-07 09:32:52 +07:00
|
|
|
|
|
|
|
#ifdef CONFIG_MEMORY_HOTPLUG
|
|
|
|
int arch_add_memory(int nid, u64 start, u64 size)
|
|
|
|
{
|
|
|
|
pg_data_t *pgdat;
|
|
|
|
unsigned long start_pfn = start >> PAGE_SHIFT;
|
|
|
|
unsigned long nr_pages = size >> PAGE_SHIFT;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
pgdat = NODE_DATA(nid);
|
|
|
|
|
|
|
|
/* We only have ZONE_NORMAL, so this is easy.. */
|
2009-01-07 05:39:14 +07:00
|
|
|
ret = __add_pages(nid, pgdat->node_zones + ZONE_NORMAL,
|
|
|
|
start_pfn, nr_pages);
|
2007-06-07 09:32:52 +07:00
|
|
|
if (unlikely(ret))
|
2008-03-05 06:23:47 +07:00
|
|
|
printk("%s: Failed, __add_pages() == %d\n", __func__, ret);
|
2007-06-07 09:32:52 +07:00
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(arch_add_memory);
|
|
|
|
|
2007-06-11 13:32:07 +07:00
|
|
|
#ifdef CONFIG_NUMA
|
2007-06-07 09:32:52 +07:00
|
|
|
int memory_add_physaddr_to_nid(u64 addr)
|
|
|
|
{
|
|
|
|
/* Node 0 for now.. */
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid);
|
|
|
|
#endif
|
2009-10-07 04:22:25 +07:00
|
|
|
|
2008-09-05 13:39:12 +07:00
|
|
|
#endif /* CONFIG_MEMORY_HOTPLUG */
|