mirror of
https://github.com/AetherDroid/android_kernel_samsung_on5xelte.git
synced 2025-09-08 09:08:05 -04:00
Fixed MTP to work with TWRP
This commit is contained in:
awab228
commit
f6dfaef42e
50820 changed files with 20846062 additions and 0 deletions
534
arch/sh/mm/init.c
Normal file
534
arch/sh/mm/init.c
Normal file
|
|
@ -0,0 +1,534 @@
|
|||
/*
|
||||
* linux/arch/sh/mm/init.c
|
||||
*
|
||||
* Copyright (C) 1999 Niibe Yutaka
|
||||
* Copyright (C) 2002 - 2011 Paul Mundt
|
||||
*
|
||||
* Based on linux/arch/i386/mm/init.c:
|
||||
* Copyright (C) 1995 Linus Torvalds
|
||||
*/
|
||||
#include <linux/mm.h>
|
||||
#include <linux/swap.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/gfp.h>
|
||||
#include <linux/bootmem.h>
|
||||
#include <linux/proc_fs.h>
|
||||
#include <linux/pagemap.h>
|
||||
#include <linux/percpu.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/memblock.h>
|
||||
#include <linux/dma-mapping.h>
|
||||
#include <linux/export.h>
|
||||
#include <asm/mmu_context.h>
|
||||
#include <asm/mmzone.h>
|
||||
#include <asm/kexec.h>
|
||||
#include <asm/tlb.h>
|
||||
#include <asm/cacheflush.h>
|
||||
#include <asm/sections.h>
|
||||
#include <asm/setup.h>
|
||||
#include <asm/cache.h>
|
||||
#include <asm/sizes.h>
|
||||
|
||||
pgd_t swapper_pg_dir[PTRS_PER_PGD];
|
||||
|
||||
void __init generic_mem_init(void)
|
||||
{
|
||||
memblock_add(__MEMORY_START, __MEMORY_SIZE);
|
||||
}
|
||||
|
||||
void __init __weak plat_mem_setup(void)
|
||||
{
|
||||
/* Nothing to see here, move along. */
|
||||
}
|
||||
|
||||
#ifdef CONFIG_MMU
|
||||
static pte_t *__get_pte_phys(unsigned long addr)
|
||||
{
|
||||
pgd_t *pgd;
|
||||
pud_t *pud;
|
||||
pmd_t *pmd;
|
||||
|
||||
pgd = pgd_offset_k(addr);
|
||||
if (pgd_none(*pgd)) {
|
||||
pgd_ERROR(*pgd);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
pud = pud_alloc(NULL, pgd, addr);
|
||||
if (unlikely(!pud)) {
|
||||
pud_ERROR(*pud);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
pmd = pmd_alloc(NULL, pud, addr);
|
||||
if (unlikely(!pmd)) {
|
||||
pmd_ERROR(*pmd);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
return pte_offset_kernel(pmd, addr);
|
||||
}
|
||||
|
||||
static void set_pte_phys(unsigned long addr, unsigned long phys, pgprot_t prot)
|
||||
{
|
||||
pte_t *pte;
|
||||
|
||||
pte = __get_pte_phys(addr);
|
||||
if (!pte_none(*pte)) {
|
||||
pte_ERROR(*pte);
|
||||
return;
|
||||
}
|
||||
|
||||
set_pte(pte, pfn_pte(phys >> PAGE_SHIFT, prot));
|
||||
local_flush_tlb_one(get_asid(), addr);
|
||||
|
||||
if (pgprot_val(prot) & _PAGE_WIRED)
|
||||
tlb_wire_entry(NULL, addr, *pte);
|
||||
}
|
||||
|
||||
static void clear_pte_phys(unsigned long addr, pgprot_t prot)
|
||||
{
|
||||
pte_t *pte;
|
||||
|
||||
pte = __get_pte_phys(addr);
|
||||
|
||||
if (pgprot_val(prot) & _PAGE_WIRED)
|
||||
tlb_unwire_entry();
|
||||
|
||||
set_pte(pte, pfn_pte(0, __pgprot(0)));
|
||||
local_flush_tlb_one(get_asid(), addr);
|
||||
}
|
||||
|
||||
void __set_fixmap(enum fixed_addresses idx, unsigned long phys, pgprot_t prot)
|
||||
{
|
||||
unsigned long address = __fix_to_virt(idx);
|
||||
|
||||
if (idx >= __end_of_fixed_addresses) {
|
||||
BUG();
|
||||
return;
|
||||
}
|
||||
|
||||
set_pte_phys(address, phys, prot);
|
||||
}
|
||||
|
||||
void __clear_fixmap(enum fixed_addresses idx, pgprot_t prot)
|
||||
{
|
||||
unsigned long address = __fix_to_virt(idx);
|
||||
|
||||
if (idx >= __end_of_fixed_addresses) {
|
||||
BUG();
|
||||
return;
|
||||
}
|
||||
|
||||
clear_pte_phys(address, prot);
|
||||
}
|
||||
|
||||
static pmd_t * __init one_md_table_init(pud_t *pud)
|
||||
{
|
||||
if (pud_none(*pud)) {
|
||||
pmd_t *pmd;
|
||||
|
||||
pmd = alloc_bootmem_pages(PAGE_SIZE);
|
||||
pud_populate(&init_mm, pud, pmd);
|
||||
BUG_ON(pmd != pmd_offset(pud, 0));
|
||||
}
|
||||
|
||||
return pmd_offset(pud, 0);
|
||||
}
|
||||
|
||||
static pte_t * __init one_page_table_init(pmd_t *pmd)
|
||||
{
|
||||
if (pmd_none(*pmd)) {
|
||||
pte_t *pte;
|
||||
|
||||
pte = alloc_bootmem_pages(PAGE_SIZE);
|
||||
pmd_populate_kernel(&init_mm, pmd, pte);
|
||||
BUG_ON(pte != pte_offset_kernel(pmd, 0));
|
||||
}
|
||||
|
||||
return pte_offset_kernel(pmd, 0);
|
||||
}
|
||||
|
||||
static pte_t * __init page_table_kmap_check(pte_t *pte, pmd_t *pmd,
|
||||
unsigned long vaddr, pte_t *lastpte)
|
||||
{
|
||||
return pte;
|
||||
}
|
||||
|
||||
void __init page_table_range_init(unsigned long start, unsigned long end,
|
||||
pgd_t *pgd_base)
|
||||
{
|
||||
pgd_t *pgd;
|
||||
pud_t *pud;
|
||||
pmd_t *pmd;
|
||||
pte_t *pte = NULL;
|
||||
int i, j, k;
|
||||
unsigned long vaddr;
|
||||
|
||||
vaddr = start;
|
||||
i = __pgd_offset(vaddr);
|
||||
j = __pud_offset(vaddr);
|
||||
k = __pmd_offset(vaddr);
|
||||
pgd = pgd_base + i;
|
||||
|
||||
for ( ; (i < PTRS_PER_PGD) && (vaddr != end); pgd++, i++) {
|
||||
pud = (pud_t *)pgd;
|
||||
for ( ; (j < PTRS_PER_PUD) && (vaddr != end); pud++, j++) {
|
||||
pmd = one_md_table_init(pud);
|
||||
#ifndef __PAGETABLE_PMD_FOLDED
|
||||
pmd += k;
|
||||
#endif
|
||||
for (; (k < PTRS_PER_PMD) && (vaddr != end); pmd++, k++) {
|
||||
pte = page_table_kmap_check(one_page_table_init(pmd),
|
||||
pmd, vaddr, pte);
|
||||
vaddr += PMD_SIZE;
|
||||
}
|
||||
k = 0;
|
||||
}
|
||||
j = 0;
|
||||
}
|
||||
}
|
||||
#endif /* CONFIG_MMU */
|
||||
|
||||
void __init allocate_pgdat(unsigned int nid)
|
||||
{
|
||||
unsigned long start_pfn, end_pfn;
|
||||
#ifdef CONFIG_NEED_MULTIPLE_NODES
|
||||
unsigned long phys;
|
||||
#endif
|
||||
|
||||
get_pfn_range_for_nid(nid, &start_pfn, &end_pfn);
|
||||
|
||||
#ifdef CONFIG_NEED_MULTIPLE_NODES
|
||||
phys = __memblock_alloc_base(sizeof(struct pglist_data),
|
||||
SMP_CACHE_BYTES, end_pfn << PAGE_SHIFT);
|
||||
/* Retry with all of system memory */
|
||||
if (!phys)
|
||||
phys = __memblock_alloc_base(sizeof(struct pglist_data),
|
||||
SMP_CACHE_BYTES, memblock_end_of_DRAM());
|
||||
if (!phys)
|
||||
panic("Can't allocate pgdat for node %d\n", nid);
|
||||
|
||||
NODE_DATA(nid) = __va(phys);
|
||||
memset(NODE_DATA(nid), 0, sizeof(struct pglist_data));
|
||||
|
||||
NODE_DATA(nid)->bdata = &bootmem_node_data[nid];
|
||||
#endif
|
||||
|
||||
NODE_DATA(nid)->node_start_pfn = start_pfn;
|
||||
NODE_DATA(nid)->node_spanned_pages = end_pfn - start_pfn;
|
||||
}
|
||||
|
||||
static void __init bootmem_init_one_node(unsigned int nid)
|
||||
{
|
||||
unsigned long total_pages, paddr;
|
||||
unsigned long end_pfn;
|
||||
struct pglist_data *p;
|
||||
|
||||
p = NODE_DATA(nid);
|
||||
|
||||
/* Nothing to do.. */
|
||||
if (!p->node_spanned_pages)
|
||||
return;
|
||||
|
||||
end_pfn = pgdat_end_pfn(p);
|
||||
|
||||
total_pages = bootmem_bootmap_pages(p->node_spanned_pages);
|
||||
|
||||
paddr = memblock_alloc(total_pages << PAGE_SHIFT, PAGE_SIZE);
|
||||
if (!paddr)
|
||||
panic("Can't allocate bootmap for nid[%d]\n", nid);
|
||||
|
||||
init_bootmem_node(p, paddr >> PAGE_SHIFT, p->node_start_pfn, end_pfn);
|
||||
|
||||
free_bootmem_with_active_regions(nid, end_pfn);
|
||||
|
||||
/*
|
||||
* XXX Handle initial reservations for the system memory node
|
||||
* only for the moment, we'll refactor this later for handling
|
||||
* reservations in other nodes.
|
||||
*/
|
||||
if (nid == 0) {
|
||||
struct memblock_region *reg;
|
||||
|
||||
/* Reserve the sections we're already using. */
|
||||
for_each_memblock(reserved, reg) {
|
||||
reserve_bootmem(reg->base, reg->size, BOOTMEM_DEFAULT);
|
||||
}
|
||||
}
|
||||
|
||||
sparse_memory_present_with_active_regions(nid);
|
||||
}
|
||||
|
||||
static void __init do_init_bootmem(void)
|
||||
{
|
||||
struct memblock_region *reg;
|
||||
int i;
|
||||
|
||||
/* Add active regions with valid PFNs. */
|
||||
for_each_memblock(memory, reg) {
|
||||
unsigned long start_pfn, end_pfn;
|
||||
start_pfn = memblock_region_memory_base_pfn(reg);
|
||||
end_pfn = memblock_region_memory_end_pfn(reg);
|
||||
__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;
|
||||
u32 zero_base = (u32)__MEMORY_START + (u32)PHYSICAL_OFFSET;
|
||||
u32 start = zero_base + (u32)CONFIG_ZERO_PAGE_OFFSET;
|
||||
|
||||
/*
|
||||
* 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.
|
||||
*/
|
||||
memblock_reserve(start, (PFN_PHYS(start_pfn) + PAGE_SIZE - 1) - start);
|
||||
|
||||
/*
|
||||
* Reserve physical pages below CONFIG_ZERO_PAGE_OFFSET.
|
||||
*/
|
||||
if (CONFIG_ZERO_PAGE_OFFSET != 0)
|
||||
memblock_reserve(zero_base, CONFIG_ZERO_PAGE_OFFSET);
|
||||
|
||||
/*
|
||||
* Handle additional early reservations
|
||||
*/
|
||||
check_for_initrd();
|
||||
reserve_crashkernel();
|
||||
}
|
||||
|
||||
void __init paging_init(void)
|
||||
{
|
||||
unsigned long max_zone_pfns[MAX_NR_ZONES];
|
||||
unsigned long vaddr, end;
|
||||
int nid;
|
||||
|
||||
sh_mv.mv_mem_init();
|
||||
|
||||
early_reserve_mem();
|
||||
|
||||
/*
|
||||
* 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();
|
||||
|
||||
memblock_enforce_memory_limit(memory_limit);
|
||||
memblock_allow_resize();
|
||||
|
||||
memblock_dump_all();
|
||||
|
||||
/*
|
||||
* Determine low and high memory ranges:
|
||||
*/
|
||||
max_low_pfn = max_pfn = memblock_end_of_DRAM() >> PAGE_SHIFT;
|
||||
min_low_pfn = __MEMORY_START >> PAGE_SHIFT;
|
||||
|
||||
nodes_clear(node_online_map);
|
||||
|
||||
memory_start = (unsigned long)__va(__MEMORY_START);
|
||||
memory_end = memory_start + (memory_limit ?: memblock_phys_mem_size());
|
||||
|
||||
uncached_init();
|
||||
pmb_init();
|
||||
do_init_bootmem();
|
||||
ioremap_fixed_init();
|
||||
|
||||
/* 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));
|
||||
|
||||
/* Set an initial value for the MMU.TTB so we don't have to
|
||||
* check for a null value. */
|
||||
set_TTB(swapper_pg_dir);
|
||||
|
||||
/*
|
||||
* Populate the relevant portions of swapper_pg_dir so that
|
||||
* we can use the fixmap entries without calling kmalloc.
|
||||
* pte's will be filled in by __set_fixmap().
|
||||
*/
|
||||
vaddr = __fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK;
|
||||
end = (FIXADDR_TOP + PMD_SIZE - 1) & PMD_MASK;
|
||||
page_table_range_init(vaddr, end, swapper_pg_dir);
|
||||
|
||||
kmap_coherent_init();
|
||||
|
||||
memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
|
||||
|
||||
for_each_online_node(nid) {
|
||||
pg_data_t *pgdat = NODE_DATA(nid);
|
||||
unsigned long low, start_pfn;
|
||||
|
||||
start_pfn = pgdat->bdata->node_min_pfn;
|
||||
low = pgdat->bdata->node_low_pfn;
|
||||
|
||||
if (max_zone_pfns[ZONE_NORMAL] < low)
|
||||
max_zone_pfns[ZONE_NORMAL] = low;
|
||||
|
||||
printk("Node %u: start_pfn = 0x%lx, low = 0x%lx\n",
|
||||
nid, start_pfn, low);
|
||||
}
|
||||
|
||||
free_area_init_nodes(max_zone_pfns);
|
||||
}
|
||||
|
||||
/*
|
||||
* Early initialization for any I/O MMUs we might have.
|
||||
*/
|
||||
static void __init iommu_init(void)
|
||||
{
|
||||
no_iommu_init();
|
||||
}
|
||||
|
||||
unsigned int mem_init_done = 0;
|
||||
|
||||
void __init mem_init(void)
|
||||
{
|
||||
pg_data_t *pgdat;
|
||||
|
||||
iommu_init();
|
||||
|
||||
high_memory = NULL;
|
||||
for_each_online_pgdat(pgdat)
|
||||
high_memory = max_t(void *, high_memory,
|
||||
__va(pgdat_end_pfn(pgdat) << PAGE_SHIFT));
|
||||
|
||||
free_all_bootmem();
|
||||
|
||||
/* Set this up early, so we can take care of the zero page */
|
||||
cpu_cache_init();
|
||||
|
||||
/* clear the zero-page */
|
||||
memset(empty_zero_page, 0, PAGE_SIZE);
|
||||
__flush_wback_region(empty_zero_page, PAGE_SIZE);
|
||||
|
||||
vsyscall_init();
|
||||
|
||||
mem_init_print_info(NULL);
|
||||
pr_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"
|
||||
" lowmem : 0x%08lx - 0x%08lx (%4ld MB) (cached)\n"
|
||||
#ifdef CONFIG_UNCACHED_MAPPING
|
||||
" : 0x%08lx - 0x%08lx (%4ld MB) (uncached)\n"
|
||||
#endif
|
||||
" .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,
|
||||
|
||||
#ifdef CONFIG_UNCACHED_MAPPING
|
||||
uncached_start, uncached_end, uncached_size >> 20,
|
||||
#endif
|
||||
|
||||
(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);
|
||||
|
||||
mem_init_done = 1;
|
||||
}
|
||||
|
||||
void free_initmem(void)
|
||||
{
|
||||
free_initmem_default(-1);
|
||||
}
|
||||
|
||||
#ifdef CONFIG_BLK_DEV_INITRD
|
||||
void free_initrd_mem(unsigned long start, unsigned long end)
|
||||
{
|
||||
free_reserved_area((void *)start, (void *)end, -1, "initrd");
|
||||
}
|
||||
#endif
|
||||
|
||||
#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.. */
|
||||
ret = __add_pages(nid, pgdat->node_zones +
|
||||
zone_for_memory(nid, start, size, ZONE_NORMAL),
|
||||
start_pfn, nr_pages);
|
||||
if (unlikely(ret))
|
||||
printk("%s: Failed, __add_pages() == %d\n", __func__, ret);
|
||||
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(arch_add_memory);
|
||||
|
||||
#ifdef CONFIG_NUMA
|
||||
int memory_add_physaddr_to_nid(u64 addr)
|
||||
{
|
||||
/* Node 0 for now.. */
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid);
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_MEMORY_HOTREMOVE
|
||||
int arch_remove_memory(u64 start, u64 size)
|
||||
{
|
||||
unsigned long start_pfn = start >> PAGE_SHIFT;
|
||||
unsigned long nr_pages = size >> PAGE_SHIFT;
|
||||
struct zone *zone;
|
||||
int ret;
|
||||
|
||||
zone = page_zone(pfn_to_page(start_pfn));
|
||||
ret = __remove_pages(zone, start_pfn, nr_pages);
|
||||
if (unlikely(ret))
|
||||
pr_warn("%s: Failed, __remove_pages() == %d\n", __func__,
|
||||
ret);
|
||||
|
||||
return ret;
|
||||
}
|
||||
#endif
|
||||
#endif /* CONFIG_MEMORY_HOTPLUG */
|
||||
Loading…
Add table
Add a link
Reference in a new issue