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-rw-r--r--arch/arm/mm/Kconfig32
-rw-r--r--arch/arm/mm/Makefile1
-rw-r--r--arch/arm/mm/cache-l2x0.c5
-rw-r--r--arch/arm/mm/cache-v6.S18
-rw-r--r--arch/arm/mm/discontig.c45
-rw-r--r--arch/arm/mm/dma-mapping.c18
-rw-r--r--arch/arm/mm/init.c392
-rw-r--r--arch/arm/mm/ioremap.c6
-rw-r--r--arch/arm/mm/mm.h4
-rw-r--r--arch/arm/mm/mmu.c161
-rw-r--r--arch/arm/mm/nommu.c22
-rw-r--r--arch/arm/mm/proc-v6.S5
-rw-r--r--arch/arm/mm/proc-v7.S2
13 files changed, 249 insertions, 462 deletions
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index 346ae14824a..87ec141fcaa 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -717,17 +717,6 @@ config TLS_REG_EMUL
a few prototypes like that in existence) and therefore access to
that required register must be emulated.
-config HAS_TLS_REG
- bool
- depends on !TLS_REG_EMUL
- default y if SMP || CPU_32v7
- help
- This selects support for the CP15 thread register.
- It is defined to be available on some ARMv6 processors (including
- all SMP capable ARMv6's) or later processors. User space may
- assume directly accessing that register and always obtain the
- expected value only on ARMv7 and above.
-
config NEEDS_SYSCALL_FOR_CMPXCHG
bool
help
@@ -735,6 +724,25 @@ config NEEDS_SYSCALL_FOR_CMPXCHG
Forget about fast user space cmpxchg support.
It is just not possible.
+config DMA_CACHE_RWFO
+ bool "Enable read/write for ownership DMA cache maintenance"
+ depends on CPU_V6 && SMP
+ default y
+ help
+ The Snoop Control Unit on ARM11MPCore does not detect the
+ cache maintenance operations and the dma_{map,unmap}_area()
+ functions may leave stale cache entries on other CPUs. By
+ enabling this option, Read or Write For Ownership in the ARMv6
+ DMA cache maintenance functions is performed. These LDR/STR
+ instructions change the cache line state to shared or modified
+ so that the cache operation has the desired effect.
+
+ Note that the workaround is only valid on processors that do
+ not perform speculative loads into the D-cache. For such
+ processors, if cache maintenance operations are not broadcast
+ in hardware, other workarounds are needed (e.g. cache
+ maintenance broadcasting in software via FIQ).
+
config OUTER_CACHE
bool
@@ -794,6 +802,8 @@ config ARM_L1_CACHE_SHIFT
config ARM_DMA_MEM_BUFFERABLE
bool "Use non-cacheable memory for DMA" if CPU_V6 && !CPU_V7
+ depends on !(MACH_REALVIEW_PB1176 || REALVIEW_EB_ARM11MP || \
+ MACH_REALVIEW_PB11MP)
default y if CPU_V6 || CPU_V7
help
Historically, the kernel has used strongly ordered mappings to
diff --git a/arch/arm/mm/Makefile b/arch/arm/mm/Makefile
index e8d34a80851..d63b6c41375 100644
--- a/arch/arm/mm/Makefile
+++ b/arch/arm/mm/Makefile
@@ -15,7 +15,6 @@ endif
obj-$(CONFIG_MODULES) += proc-syms.o
obj-$(CONFIG_ALIGNMENT_TRAP) += alignment.o
-obj-$(CONFIG_DISCONTIGMEM) += discontig.o
obj-$(CONFIG_HIGHMEM) += highmem.o
obj-$(CONFIG_CPU_ABRT_NOMMU) += abort-nommu.o
diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c
index 9819869d2bc..df4955885b2 100644
--- a/arch/arm/mm/cache-l2x0.c
+++ b/arch/arm/mm/cache-l2x0.c
@@ -218,6 +218,9 @@ void __init l2x0_init(void __iomem *base, __u32 aux_val, __u32 aux_mask)
cache_id = readl(l2x0_base + L2X0_CACHE_ID);
aux = readl(l2x0_base + L2X0_AUX_CTRL);
+ aux &= aux_mask;
+ aux |= aux_val;
+
/* Determine the number of ways */
switch (cache_id & L2X0_CACHE_ID_PART_MASK) {
case L2X0_CACHE_ID_PART_L310:
@@ -248,8 +251,6 @@ void __init l2x0_init(void __iomem *base, __u32 aux_val, __u32 aux_mask)
if (!(readl(l2x0_base + L2X0_CTRL) & 1)) {
/* l2x0 controller is disabled */
- aux &= aux_mask;
- aux |= aux_val;
writel(aux, l2x0_base + L2X0_AUX_CTRL);
l2x0_inv_all();
diff --git a/arch/arm/mm/cache-v6.S b/arch/arm/mm/cache-v6.S
index e46ecd84713..86aa689ef1a 100644
--- a/arch/arm/mm/cache-v6.S
+++ b/arch/arm/mm/cache-v6.S
@@ -211,8 +211,9 @@ v6_dma_inv_range:
mcrne p15, 0, r1, c7, c15, 1 @ clean & invalidate unified line
#endif
1:
-#ifdef CONFIG_SMP
- str r0, [r0] @ write for ownership
+#ifdef CONFIG_DMA_CACHE_RWFO
+ ldr r2, [r0] @ read for ownership
+ str r2, [r0] @ write for ownership
#endif
#ifdef HARVARD_CACHE
mcr p15, 0, r0, c7, c6, 1 @ invalidate D line
@@ -234,7 +235,7 @@ v6_dma_inv_range:
v6_dma_clean_range:
bic r0, r0, #D_CACHE_LINE_SIZE - 1
1:
-#ifdef CONFIG_SMP
+#ifdef CONFIG_DMA_CACHE_RWFO
ldr r2, [r0] @ read for ownership
#endif
#ifdef HARVARD_CACHE
@@ -257,7 +258,7 @@ v6_dma_clean_range:
ENTRY(v6_dma_flush_range)
bic r0, r0, #D_CACHE_LINE_SIZE - 1
1:
-#ifdef CONFIG_SMP
+#ifdef CONFIG_DMA_CACHE_RWFO
ldr r2, [r0] @ read for ownership
str r2, [r0] @ write for ownership
#endif
@@ -283,9 +284,13 @@ ENTRY(v6_dma_map_area)
add r1, r1, r0
teq r2, #DMA_FROM_DEVICE
beq v6_dma_inv_range
+#ifndef CONFIG_DMA_CACHE_RWFO
+ b v6_dma_clean_range
+#else
teq r2, #DMA_TO_DEVICE
beq v6_dma_clean_range
b v6_dma_flush_range
+#endif
ENDPROC(v6_dma_map_area)
/*
@@ -295,6 +300,11 @@ ENDPROC(v6_dma_map_area)
* - dir - DMA direction
*/
ENTRY(v6_dma_unmap_area)
+#ifndef CONFIG_DMA_CACHE_RWFO
+ add r1, r1, r0
+ teq r2, #DMA_TO_DEVICE
+ bne v6_dma_inv_range
+#endif
mov pc, lr
ENDPROC(v6_dma_unmap_area)
diff --git a/arch/arm/mm/discontig.c b/arch/arm/mm/discontig.c
deleted file mode 100644
index c8c0c4b0f0a..00000000000
--- a/arch/arm/mm/discontig.c
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
- * linux/arch/arm/mm/discontig.c
- *
- * Discontiguous memory support.
- *
- * Initial code: Copyright (C) 1999-2000 Nicolas Pitre
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/module.h>
-#include <linux/mmzone.h>
-#include <linux/bootmem.h>
-
-#if MAX_NUMNODES != 4 && MAX_NUMNODES != 16
-# error Fix Me Please
-#endif
-
-/*
- * Our node_data structure for discontiguous memory.
- */
-
-pg_data_t discontig_node_data[MAX_NUMNODES] = {
- { .bdata = &bootmem_node_data[0] },
- { .bdata = &bootmem_node_data[1] },
- { .bdata = &bootmem_node_data[2] },
- { .bdata = &bootmem_node_data[3] },
-#if MAX_NUMNODES == 16
- { .bdata = &bootmem_node_data[4] },
- { .bdata = &bootmem_node_data[5] },
- { .bdata = &bootmem_node_data[6] },
- { .bdata = &bootmem_node_data[7] },
- { .bdata = &bootmem_node_data[8] },
- { .bdata = &bootmem_node_data[9] },
- { .bdata = &bootmem_node_data[10] },
- { .bdata = &bootmem_node_data[11] },
- { .bdata = &bootmem_node_data[12] },
- { .bdata = &bootmem_node_data[13] },
- { .bdata = &bootmem_node_data[14] },
- { .bdata = &bootmem_node_data[15] },
-#endif
-};
-
-EXPORT_SYMBOL(discontig_node_data);
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 13fa536d82e..9e7742f0a10 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -24,15 +24,6 @@
#include <asm/tlbflush.h>
#include <asm/sizes.h>
-/* Sanity check size */
-#if (CONSISTENT_DMA_SIZE % SZ_2M)
-#error "CONSISTENT_DMA_SIZE must be multiple of 2MiB"
-#endif
-
-#define CONSISTENT_OFFSET(x) (((unsigned long)(x) - CONSISTENT_BASE) >> PAGE_SHIFT)
-#define CONSISTENT_PTE_INDEX(x) (((unsigned long)(x) - CONSISTENT_BASE) >> PGDIR_SHIFT)
-#define NUM_CONSISTENT_PTES (CONSISTENT_DMA_SIZE >> PGDIR_SHIFT)
-
static u64 get_coherent_dma_mask(struct device *dev)
{
u64 mask = ISA_DMA_THRESHOLD;
@@ -123,6 +114,15 @@ static void __dma_free_buffer(struct page *page, size_t size)
}
#ifdef CONFIG_MMU
+/* Sanity check size */
+#if (CONSISTENT_DMA_SIZE % SZ_2M)
+#error "CONSISTENT_DMA_SIZE must be multiple of 2MiB"
+#endif
+
+#define CONSISTENT_OFFSET(x) (((unsigned long)(x) - CONSISTENT_BASE) >> PAGE_SHIFT)
+#define CONSISTENT_PTE_INDEX(x) (((unsigned long)(x) - CONSISTENT_BASE) >> PGDIR_SHIFT)
+#define NUM_CONSISTENT_PTES (CONSISTENT_DMA_SIZE >> PGDIR_SHIFT)
+
/*
* These are the page tables (2MB each) covering uncached, DMA consistent allocations
*/
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index f6a99946532..599d121c81e 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -17,6 +17,7 @@
#include <linux/initrd.h>
#include <linux/highmem.h>
#include <linux/gfp.h>
+#include <linux/memblock.h>
#include <asm/mach-types.h>
#include <asm/sections.h>
@@ -79,38 +80,37 @@ struct meminfo meminfo;
void show_mem(void)
{
int free = 0, total = 0, reserved = 0;
- int shared = 0, cached = 0, slab = 0, node, i;
+ int shared = 0, cached = 0, slab = 0, i;
struct meminfo * mi = &meminfo;
printk("Mem-info:\n");
show_free_areas();
- for_each_online_node(node) {
- for_each_nodebank (i,mi,node) {
- struct membank *bank = &mi->bank[i];
- unsigned int pfn1, pfn2;
- struct page *page, *end;
-
- pfn1 = bank_pfn_start(bank);
- pfn2 = bank_pfn_end(bank);
-
- page = pfn_to_page(pfn1);
- end = pfn_to_page(pfn2 - 1) + 1;
-
- do {
- total++;
- if (PageReserved(page))
- reserved++;
- else if (PageSwapCache(page))
- cached++;
- else if (PageSlab(page))
- slab++;
- else if (!page_count(page))
- free++;
- else
- shared += page_count(page) - 1;
- page++;
- } while (page < end);
- }
+
+ for_each_bank (i, mi) {
+ struct membank *bank = &mi->bank[i];
+ unsigned int pfn1, pfn2;
+ struct page *page, *end;
+
+ pfn1 = bank_pfn_start(bank);
+ pfn2 = bank_pfn_end(bank);
+
+ page = pfn_to_page(pfn1);
+ end = pfn_to_page(pfn2 - 1) + 1;
+
+ do {
+ total++;
+ if (PageReserved(page))
+ reserved++;
+ else if (PageSwapCache(page))
+ cached++;
+ else if (PageSlab(page))
+ slab++;
+ else if (!page_count(page))
+ free++;
+ else
+ shared += page_count(page) - 1;
+ page++;
+ } while (page < end);
}
printk("%d pages of RAM\n", total);
@@ -121,7 +121,7 @@ void show_mem(void)
printk("%d pages swap cached\n", cached);
}
-static void __init find_node_limits(int node, struct meminfo *mi,
+static void __init find_limits(struct meminfo *mi,
unsigned long *min, unsigned long *max_low, unsigned long *max_high)
{
int i;
@@ -129,7 +129,7 @@ static void __init find_node_limits(int node, struct meminfo *mi,
*min = -1UL;
*max_low = *max_high = 0;
- for_each_nodebank(i, mi, node) {
+ for_each_bank (i, mi) {
struct membank *bank = &mi->bank[i];
unsigned long start, end;
@@ -147,155 +147,64 @@ static void __init find_node_limits(int node, struct meminfo *mi,
}
}
-/*
- * FIXME: We really want to avoid allocating the bootmap bitmap
- * over the top of the initrd. Hopefully, this is located towards
- * the start of a bank, so if we allocate the bootmap bitmap at
- * the end, we won't clash.
- */
-static unsigned int __init
-find_bootmap_pfn(int node, struct meminfo *mi, unsigned int bootmap_pages)
-{
- unsigned int start_pfn, i, bootmap_pfn;
-
- start_pfn = PAGE_ALIGN(__pa(_end)) >> PAGE_SHIFT;
- bootmap_pfn = 0;
-
- for_each_nodebank(i, mi, node) {
- struct membank *bank = &mi->bank[i];
- unsigned int start, end;
-
- start = bank_pfn_start(bank);
- end = bank_pfn_end(bank);
-
- if (end < start_pfn)
- continue;
-
- if (start < start_pfn)
- start = start_pfn;
-
- if (end <= start)
- continue;
-
- if (end - start >= bootmap_pages) {
- bootmap_pfn = start;
- break;
- }
- }
-
- if (bootmap_pfn == 0)
- BUG();
-
- return bootmap_pfn;
-}
-
-static int __init check_initrd(struct meminfo *mi)
-{
- int initrd_node = -2;
-#ifdef CONFIG_BLK_DEV_INITRD
- unsigned long end = phys_initrd_start + phys_initrd_size;
-
- /*
- * Make sure that the initrd is within a valid area of
- * memory.
- */
- if (phys_initrd_size) {
- unsigned int i;
-
- initrd_node = -1;
-
- for (i = 0; i < mi->nr_banks; i++) {
- struct membank *bank = &mi->bank[i];
- if (bank_phys_start(bank) <= phys_initrd_start &&
- end <= bank_phys_end(bank))
- initrd_node = bank->node;
- }
- }
-
- if (initrd_node == -1) {
- printk(KERN_ERR "INITRD: 0x%08lx+0x%08lx extends beyond "
- "physical memory - disabling initrd\n",
- phys_initrd_start, phys_initrd_size);
- phys_initrd_start = phys_initrd_size = 0;
- }
-#endif
-
- return initrd_node;
-}
-
-static void __init bootmem_init_node(int node, struct meminfo *mi,
+static void __init arm_bootmem_init(struct meminfo *mi,
unsigned long start_pfn, unsigned long end_pfn)
{
- unsigned long boot_pfn;
unsigned int boot_pages;
+ phys_addr_t bitmap;
pg_data_t *pgdat;
int i;
/*
- * Allocate the bootmem bitmap page.
+ * Allocate the bootmem bitmap page. This must be in a region
+ * of memory which has already been mapped.
*/
boot_pages = bootmem_bootmap_pages(end_pfn - start_pfn);
- boot_pfn = find_bootmap_pfn(node, mi, boot_pages);
+ bitmap = memblock_alloc_base(boot_pages << PAGE_SHIFT, L1_CACHE_BYTES,
+ __pfn_to_phys(end_pfn));
/*
- * Initialise the bootmem allocator for this node, handing the
+ * Initialise the bootmem allocator, handing the
* memory banks over to bootmem.
*/
- node_set_online(node);
- pgdat = NODE_DATA(node);
- init_bootmem_node(pgdat, boot_pfn, start_pfn, end_pfn);
+ node_set_online(0);
+ pgdat = NODE_DATA(0);
+ init_bootmem_node(pgdat, __phys_to_pfn(bitmap), start_pfn, end_pfn);
- for_each_nodebank(i, mi, node) {
+ for_each_bank(i, mi) {
struct membank *bank = &mi->bank[i];
if (!bank->highmem)
- free_bootmem_node(pgdat, bank_phys_start(bank), bank_phys_size(bank));
+ free_bootmem(bank_phys_start(bank), bank_phys_size(bank));
}
/*
- * Reserve the bootmem bitmap for this node.
+ * Reserve the memblock reserved regions in bootmem.
*/
- reserve_bootmem_node(pgdat, boot_pfn << PAGE_SHIFT,
- boot_pages << PAGE_SHIFT, BOOTMEM_DEFAULT);
-}
-
-static void __init bootmem_reserve_initrd(int node)
-{
-#ifdef CONFIG_BLK_DEV_INITRD
- pg_data_t *pgdat = NODE_DATA(node);
- int res;
-
- res = reserve_bootmem_node(pgdat, phys_initrd_start,
- phys_initrd_size, BOOTMEM_EXCLUSIVE);
-
- if (res == 0) {
- initrd_start = __phys_to_virt(phys_initrd_start);
- initrd_end = initrd_start + phys_initrd_size;
- } else {
- printk(KERN_ERR
- "INITRD: 0x%08lx+0x%08lx overlaps in-use "
- "memory region - disabling initrd\n",
- phys_initrd_start, phys_initrd_size);
+ for (i = 0; i < memblock.reserved.cnt; i++) {
+ phys_addr_t start = memblock_start_pfn(&memblock.reserved, i);
+ if (start >= start_pfn &&
+ memblock_end_pfn(&memblock.reserved, i) <= end_pfn)
+ reserve_bootmem_node(pgdat, __pfn_to_phys(start),
+ memblock_size_bytes(&memblock.reserved, i),
+ BOOTMEM_DEFAULT);
}
-#endif
}
-static void __init bootmem_free_node(int node, struct meminfo *mi)
+static void __init arm_bootmem_free(struct meminfo *mi, unsigned long min,
+ unsigned long max_low, unsigned long max_high)
{
unsigned long zone_size[MAX_NR_ZONES], zhole_size[MAX_NR_ZONES];
- unsigned long min, max_low, max_high;
int i;
- find_node_limits(node, mi, &min, &max_low, &max_high);
-
/*
- * initialise the zones within this node.
+ * initialise the zones.
*/
memset(zone_size, 0, sizeof(zone_size));
/*
- * The size of this node has already been determined. If we need
- * to do anything fancy with the allocation of this memory to the
- * zones, now is the time to do it.
+ * The memory size has already been determined. If we need
+ * to do anything fancy with the allocation of this memory
+ * to the zones, now is the time to do it.
*/
zone_size[0] = max_low - min;
#ifdef CONFIG_HIGHMEM
@@ -303,11 +212,11 @@ static void __init bootmem_free_node(int node, struct meminfo *mi)
#endif
/*
- * For each bank in this node, calculate the size of the holes.
- * holes = node_size - sum(bank_sizes_in_node)
+ * Calculate the size of the holes.
+ * holes = node_size - sum(bank_sizes)
*/
memcpy(zhole_size, zone_size, sizeof(zhole_size));
- for_each_nodebank(i, mi, node) {
+ for_each_bank(i, mi) {
int idx = 0;
#ifdef CONFIG_HIGHMEM
if (mi->bank[i].highmem)
@@ -320,24 +229,23 @@ static void __init bootmem_free_node(int node, struct meminfo *mi)
* Adjust the sizes according to any special requirements for
* this machine type.
*/
- arch_adjust_zones(node, zone_size, zhole_size);
+ arch_adjust_zones(zone_size, zhole_size);
- free_area_init_node(node, zone_size, min, zhole_size);
+ free_area_init_node(0, zone_size, min, zhole_size);
}
#ifndef CONFIG_SPARSEMEM
int pfn_valid(unsigned long pfn)
{
- struct meminfo *mi = &meminfo;
- unsigned int left = 0, right = mi->nr_banks;
+ struct memblock_region *mem = &memblock.memory;
+ unsigned int left = 0, right = mem->cnt;
do {
unsigned int mid = (right + left) / 2;
- struct membank *bank = &mi->bank[mid];
- if (pfn < bank_pfn_start(bank))
+ if (pfn < memblock_start_pfn(mem, mid))
right = mid;
- else if (pfn >= bank_pfn_end(bank))
+ else if (pfn >= memblock_end_pfn(mem, mid))
left = mid + 1;
else
return 1;
@@ -346,73 +254,69 @@ int pfn_valid(unsigned long pfn)
}
EXPORT_SYMBOL(pfn_valid);
-static void arm_memory_present(struct meminfo *mi, int node)
+static void arm_memory_present(void)
{
}
#else
-static void arm_memory_present(struct meminfo *mi, int node)
+static void arm_memory_present(void)
{
int i;
- for_each_nodebank(i, mi, node) {
- struct membank *bank = &mi->bank[i];
- memory_present(node, bank_pfn_start(bank), bank_pfn_end(bank));
- }
+ for (i = 0; i < memblock.memory.cnt; i++)
+ memory_present(0, memblock_start_pfn(&memblock.memory, i),
+ memblock_end_pfn(&memblock.memory, i));
}
#endif
-void __init bootmem_init(void)
+void __init arm_memblock_init(struct meminfo *mi, struct machine_desc *mdesc)
{
- struct meminfo *mi = &meminfo;
- unsigned long min, max_low, max_high;
- int node, initrd_node;
+ int i;
- /*
- * Locate which node contains the ramdisk image, if any.
- */
- initrd_node = check_initrd(mi);
+ memblock_init();
+ for (i = 0; i < mi->nr_banks; i++)
+ memblock_add(mi->bank[i].start, mi->bank[i].size);
- max_low = max_high = 0;
+ /* Register the kernel text, kernel data and initrd with memblock. */
+#ifdef CONFIG_XIP_KERNEL
+ memblock_reserve(__pa(_data), _end - _data);
+#else
+ memblock_reserve(__pa(_stext), _end - _stext);
+#endif
+#ifdef CONFIG_BLK_DEV_INITRD
+ if (phys_initrd_size) {
+ memblock_reserve(phys_initrd_start, phys_initrd_size);
- /*
- * Run through each node initialising the bootmem allocator.
- */
- for_each_node(node) {
- unsigned long node_low, node_high;
+ /* Now convert initrd to virtual addresses */
+ initrd_start = __phys_to_virt(phys_initrd_start);
+ initrd_end = initrd_start + phys_initrd_size;
+ }
+#endif
- find_node_limits(node, mi, &min, &node_low, &node_high);
+ arm_mm_memblock_reserve();
- if (node_low > max_low)
- max_low = node_low;
- if (node_high > max_high)
- max_high = node_high;
+ /* reserve any platform specific memblock areas */
+ if (mdesc->reserve)
+ mdesc->reserve();
- /*
- * If there is no memory in this node, ignore it.
- * (We can't have nodes which have no lowmem)
- */
- if (node_low == 0)
- continue;
+ memblock_analyze();
+ memblock_dump_all();
+}
- bootmem_init_node(node, mi, min, node_low);
+void __init bootmem_init(void)
+{
+ struct meminfo *mi = &meminfo;
+ unsigned long min, max_low, max_high;
- /*
- * Reserve any special node zero regions.
- */
- if (node == 0)
- reserve_node_zero(NODE_DATA(node));
+ max_low = max_high = 0;
- /*
- * If the initrd is in this node, reserve its memory.
- */
- if (node == initrd_node)
- bootmem_reserve_initrd(node);
+ find_limits(mi, &min, &max_low, &max_high);
- /*
- * Sparsemem tries to allocate bootmem in memory_present(),
- * so must be done after the fixed reservations
- */
- arm_memory_present(mi, node);
- }
+ arm_bootmem_init(mi, min, max_low);
+
+ /*
+ * Sparsemem tries to allocate bootmem in memory_present(),
+ * so must be done after the fixed reservations
+ */
+ arm_memory_present();
/*
* sparse_init() needs the bootmem allocator up and running.
@@ -420,12 +324,11 @@ void __init bootmem_init(void)
sparse_init();
/*
- * Now free memory in each node - free_area_init_node needs
+ * Now free the memory - free_area_init_node needs
* the sparse mem_map arrays initialized by sparse_init()
* for memmap_init_zone(), otherwise all PFNs are invalid.
*/
- for_each_node(node)
- bootmem_free_node(node, mi);
+ arm_bootmem_free(mi, min, max_low, max_high);
high_memory = __va((max_low << PAGE_SHIFT) - 1) + 1;
@@ -460,7 +363,7 @@ static inline int free_area(unsigned long pfn, unsigned long end, char *s)
}
static inline void
-free_memmap(int node, unsigned long start_pfn, unsigned long end_pfn)
+free_memmap(unsigned long start_pfn, unsigned long end_pfn)
{
struct page *start_pg, *end_pg;
unsigned long pg, pgend;
@@ -483,13 +386,13 @@ free_memmap(int node, unsigned long start_pfn, unsigned long end_pfn)
* free the section of the memmap array.
*/
if (pg < pgend)
- free_bootmem_node(NODE_DATA(node), pg, pgend - pg);
+ free_bootmem(pg, pgend - pg);
}
/*
* The mem_map array can get very big. Free the unused area of the memory map.
*/
-static void __init free_unused_memmap_node(int node, struct meminfo *mi)
+static void __init free_unused_memmap(struct meminfo *mi)
{
unsigned long bank_start, prev_bank_end = 0;
unsigned int i;
@@ -499,7 +402,7 @@ static void __init free_unused_memmap_node(int node, struct meminfo *mi)
* may not be the case, especially if the user has provided the
* information on the command line.
*/
- for_each_nodebank(i, mi, node) {
+ for_each_bank(i, mi) {
struct membank *bank = &mi->bank[i];
bank_start = bank_pfn_start(bank);
@@ -514,7 +417,7 @@ static void __init free_unused_memmap_node(int node, struct meminfo *mi)
* between the current bank and the previous, free it.
*/
if (prev_bank_end && prev_bank_end != bank_start)
- free_memmap(node, prev_bank_end, bank_start);
+ free_memmap(prev_bank_end, bank_start);
prev_bank_end = bank_pfn_end(bank);
}
@@ -528,21 +431,14 @@ static void __init free_unused_memmap_node(int node, struct meminfo *mi)
void __init mem_init(void)
{
unsigned long reserved_pages, free_pages;
- int i, node;
+ int i;
-#ifndef CONFIG_DISCONTIGMEM
max_mapnr = pfn_to_page(max_pfn + PHYS_PFN_OFFSET) - mem_map;
-#endif
/* this will put all unused low memory onto the freelists */
- for_each_online_node(node) {
- pg_data_t *pgdat = NODE_DATA(node);
-
- free_unused_memmap_node(node, &meminfo);
+ free_unused_memmap(&meminfo);
- if (pgdat->node_spanned_pages != 0)
- totalram_pages += free_all_bootmem_node(pgdat);
- }
+ totalram_pages += free_all_bootmem();
#ifdef CONFIG_SA1111
/* now that our DMA memory is actually so designated, we can free it */
@@ -552,39 +448,35 @@ void __init mem_init(void)
#ifdef CONFIG_HIGHMEM
/* set highmem page free */
- for_each_online_node(node) {
- for_each_nodebank (i, &meminfo, node) {
- unsigned long start = bank_pfn_start(&meminfo.bank[i]);
- unsigned long end = bank_pfn_end(&meminfo.bank[i]);
- if (start >= max_low_pfn + PHYS_PFN_OFFSET)
- totalhigh_pages += free_area(start, end, NULL);
- }
+ for_each_bank (i, &meminfo) {
+ unsigned long start = bank_pfn_start(&meminfo.bank[i]);
+ unsigned long end = bank_pfn_end(&meminfo.bank[i]);
+ if (start >= max_low_pfn + PHYS_PFN_OFFSET)
+ totalhigh_pages += free_area(start, end, NULL);
}
totalram_pages += totalhigh_pages;
#endif
reserved_pages = free_pages = 0;
- for_each_online_node(node) {
- for_each_nodebank(i, &meminfo, node) {
- struct membank *bank = &meminfo.bank[i];
- unsigned int pfn1, pfn2;
- struct page *page, *end;
-
- pfn1 = bank_pfn_start(bank);
- pfn2 = bank_pfn_end(bank);
-
- page = pfn_to_page(pfn1);
- end = pfn_to_page(pfn2 - 1) + 1;
-
- do {
- if (PageReserved(page))
- reserved_pages++;
- else if (!page_count(page))
- free_pages++;
- page++;
- } while (page < end);
- }
+ for_each_bank(i, &meminfo) {
+ struct membank *bank = &meminfo.bank[i];
+ unsigned int pfn1, pfn2;
+ struct page *page, *end;
+
+ pfn1 = bank_pfn_start(bank);
+ pfn2 = bank_pfn_end(bank);
+
+ page = pfn_to_page(pfn1);
+ end = pfn_to_page(pfn2 - 1) + 1;
+
+ do {
+ if (PageReserved(page))
+ reserved_pages++;
+ else if (!page_count(page))
+ free_pages++;
+ page++;
+ } while (page < end);
}
/*
diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c
index 28c8b950ef0..03f11935ed0 100644
--- a/arch/arm/mm/ioremap.c
+++ b/arch/arm/mm/ioremap.c
@@ -268,6 +268,12 @@ void __iomem * __arm_ioremap_pfn_caller(unsigned long pfn,
if (pfn >= 0x100000 && (__pfn_to_phys(pfn) & ~SUPERSECTION_MASK))
return NULL;
+ /*
+ * Don't allow RAM to be mapped - this causes problems with ARMv6+
+ */
+ if (WARN_ON(pfn_valid(pfn)))
+ return NULL;
+
type = get_mem_type(mtype);
if (!type)
return NULL;
diff --git a/arch/arm/mm/mm.h b/arch/arm/mm/mm.h
index 815d08eecbb..6630620380a 100644
--- a/arch/arm/mm/mm.h
+++ b/arch/arm/mm/mm.h
@@ -28,7 +28,5 @@ extern void __flush_dcache_page(struct address_space *mapping, struct page *page
#endif
-struct pglist_data;
-
void __init bootmem_init(void);
-void reserve_node_zero(struct pglist_data *pgdat);
+void arm_mm_memblock_reserve(void);
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 28589417118..d5541adc352 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -11,13 +11,12 @@
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/init.h>
-#include <linux/bootmem.h>
#include <linux/mman.h>
#include <linux/nodemask.h>
+#include <linux/memblock.h>
#include <linux/sort.h>
#include <asm/cputype.h>
-#include <asm/mach-types.h>
#include <asm/sections.h>
#include <asm/cachetype.h>
#include <asm/setup.h>
@@ -488,18 +487,28 @@ static void __init build_mem_type_table(void)
#define vectors_base() (vectors_high() ? 0xffff0000 : 0)
-static void __init alloc_init_pte(pmd_t *pmd, unsigned long addr,
- unsigned long end, unsigned long pfn,
- const struct mem_type *type)
+static void __init *early_alloc(unsigned long sz)
{
- pte_t *pte;
+ void *ptr = __va(memblock_alloc(sz, sz));
+ memset(ptr, 0, sz);
+ return ptr;
+}
+static pte_t * __init early_pte_alloc(pmd_t *pmd, unsigned long addr, unsigned long prot)
+{
if (pmd_none(*pmd)) {
- pte = alloc_bootmem_low_pages(2 * PTRS_PER_PTE * sizeof(pte_t));
- __pmd_populate(pmd, __pa(pte) | type->prot_l1);
+ pte_t *pte = early_alloc(2 * PTRS_PER_PTE * sizeof(pte_t));
+ __pmd_populate(pmd, __pa(pte) | prot);
}
+ BUG_ON(pmd_bad(*pmd));
+ return pte_offset_kernel(pmd, addr);
+}
- pte = pte_offset_kernel(pmd, addr);
+static void __init alloc_init_pte(pmd_t *pmd, unsigned long addr,
+ unsigned long end, unsigned long pfn,
+ const struct mem_type *type)
+{
+ pte_t *pte = early_pte_alloc(pmd, addr, type->prot_l1);
do {
set_pte_ext(pte, pfn_pte(pfn, __pgprot(type->prot_pte)), 0);
pfn++;
@@ -668,7 +677,7 @@ void __init iotable_init(struct map_desc *io_desc, int nr)
create_mapping(io_desc + i);
}
-static unsigned long __initdata vmalloc_reserve = SZ_128M;
+static void * __initdata vmalloc_min = (void *)(VMALLOC_END - SZ_128M);
/*
* vmalloc=size forces the vmalloc area to be exactly 'size'
@@ -677,7 +686,7 @@ static unsigned long __initdata vmalloc_reserve = SZ_128M;
*/
static int __init early_vmalloc(char *arg)
{
- vmalloc_reserve = memparse(arg, NULL);
+ unsigned long vmalloc_reserve = memparse(arg, NULL);
if (vmalloc_reserve < SZ_16M) {
vmalloc_reserve = SZ_16M;
@@ -692,22 +701,26 @@ static int __init early_vmalloc(char *arg)
"vmalloc area is too big, limiting to %luMB\n",
vmalloc_reserve >> 20);
}
+
+ vmalloc_min = (void *)(VMALLOC_END - vmalloc_reserve);
return 0;
}
early_param("vmalloc", early_vmalloc);
-#define VMALLOC_MIN (void *)(VMALLOC_END - vmalloc_reserve)
+phys_addr_t lowmem_end_addr;
static void __init sanity_check_meminfo(void)
{
int i, j, highmem = 0;
+ lowmem_end_addr = __pa(vmalloc_min - 1) + 1;
+
for (i = 0, j = 0; i < meminfo.nr_banks; i++) {
struct membank *bank = &meminfo.bank[j];
*bank = meminfo.bank[i];
#ifdef CONFIG_HIGHMEM
- if (__va(bank->start) > VMALLOC_MIN ||
+ if (__va(bank->start) > vmalloc_min ||
__va(bank->start) < (void *)PAGE_OFFSET)
highmem = 1;
@@ -717,8 +730,8 @@ static void __init sanity_check_meminfo(void)
* Split those memory banks which are partially overlapping
* the vmalloc area greatly simplifying things later.
*/
- if (__va(bank->start) < VMALLOC_MIN &&
- bank->size > VMALLOC_MIN - __va(bank->start)) {
+ if (__va(bank->start) < vmalloc_min &&
+ bank->size > vmalloc_min - __va(bank->start)) {
if (meminfo.nr_banks >= NR_BANKS) {
printk(KERN_CRIT "NR_BANKS too low, "
"ignoring high memory\n");
@@ -727,12 +740,12 @@ static void __init sanity_check_meminfo(void)
(meminfo.nr_banks - i) * sizeof(*bank));
meminfo.nr_banks++;
i++;
- bank[1].size -= VMALLOC_MIN - __va(bank->start);
- bank[1].start = __pa(VMALLOC_MIN - 1) + 1;
+ bank[1].size -= vmalloc_min - __va(bank->start);
+ bank[1].start = __pa(vmalloc_min - 1) + 1;
bank[1].highmem = highmem = 1;
j++;
}
- bank->size = VMALLOC_MIN - __va(bank->start);
+ bank->size = vmalloc_min - __va(bank->start);
}
#else
bank->highmem = highmem;
@@ -741,7 +754,7 @@ static void __init sanity_check_meminfo(void)
* Check whether this memory bank would entirely overlap
* the vmalloc area.
*/
- if (__va(bank->start) >= VMALLOC_MIN ||
+ if (__va(bank->start) >= vmalloc_min ||
__va(bank->start) < (void *)PAGE_OFFSET) {
printk(KERN_NOTICE "Ignoring RAM at %.8lx-%.8lx "
"(vmalloc region overlap).\n",
@@ -753,9 +766,9 @@ static void __init sanity_check_meminfo(void)
* Check whether this memory bank would partially overlap
* the vmalloc area.
*/
- if (__va(bank->start + bank->size) > VMALLOC_MIN ||
+ if (__va(bank->start + bank->size) > vmalloc_min ||
__va(bank->start + bank->size) < __va(bank->start)) {
- unsigned long newsize = VMALLOC_MIN - __va(bank->start);
+ unsigned long newsize = vmalloc_min - __va(bank->start);
printk(KERN_NOTICE "Truncating RAM at %.8lx-%.8lx "
"to -%.8lx (vmalloc region overlap).\n",
bank->start, bank->start + bank->size - 1,
@@ -827,101 +840,23 @@ static inline void prepare_page_table(void)
}
/*
- * Reserve the various regions of node 0
+ * Reserve the special regions of memory
*/
-void __init reserve_node_zero(pg_data_t *pgdat)
+void __init arm_mm_memblock_reserve(void)
{
- unsigned long res_size = 0;
-
- /*
- * Register the kernel text and data with bootmem.
- * Note that this can only be in node 0.
- */
-#ifdef CONFIG_XIP_KERNEL
- reserve_bootmem_node(pgdat, __pa(_data), _end - _data,
- BOOTMEM_DEFAULT);
-#else
- reserve_bootmem_node(pgdat, __pa(_stext), _end - _stext,
- BOOTMEM_DEFAULT);
-#endif
-
/*
* Reserve the page tables. These are already in use,
* and can only be in node 0.
*/
- reserve_bootmem_node(pgdat, __pa(swapper_pg_dir),
- PTRS_PER_PGD * sizeof(pgd_t), BOOTMEM_DEFAULT);
-
- /*
- * Hmm... This should go elsewhere, but we really really need to
- * stop things allocating the low memory; ideally we need a better
- * implementation of GFP_DMA which does not assume that DMA-able
- * memory starts at zero.
- */
- if (machine_is_integrator() || machine_is_cintegrator())
- res_size = __pa(swapper_pg_dir) - PHYS_OFFSET;
-
- /*
- * These should likewise go elsewhere. They pre-reserve the
- * screen memory region at the start of main system memory.
- */
- if (machine_is_edb7211())
- res_size = 0x00020000;
- if (machine_is_p720t())
- res_size = 0x00014000;
-
- /* H1940, RX3715 and RX1950 need to reserve this for suspend */
-
- if (machine_is_h1940() || machine_is_rx3715()
- || machine_is_rx1950()) {
- reserve_bootmem_node(pgdat, 0x30003000, 0x1000,
- BOOTMEM_DEFAULT);
- reserve_bootmem_node(pgdat, 0x30081000, 0x1000,
- BOOTMEM_DEFAULT);
- }
-
- if (machine_is_palmld() || machine_is_palmtx()) {
- reserve_bootmem_node(pgdat, 0xa0000000, 0x1000,
- BOOTMEM_EXCLUSIVE);
- reserve_bootmem_node(pgdat, 0xa0200000, 0x1000,
- BOOTMEM_EXCLUSIVE);
- }
-
- if (machine_is_treo680() || machine_is_centro()) {
- reserve_bootmem_node(pgdat, 0xa0000000, 0x1000,
- BOOTMEM_EXCLUSIVE);
- reserve_bootmem_node(pgdat, 0xa2000000, 0x1000,
- BOOTMEM_EXCLUSIVE);
- }
-
- if (machine_is_palmt5())
- reserve_bootmem_node(pgdat, 0xa0200000, 0x1000,
- BOOTMEM_EXCLUSIVE);
-
- /*
- * U300 - This platform family can share physical memory
- * between two ARM cpus, one running Linux and the other
- * running another OS.
- */
- if (machine_is_u300()) {
-#ifdef CONFIG_MACH_U300_SINGLE_RAM
-#if ((CONFIG_MACH_U300_ACCESS_MEM_SIZE & 1) == 1) && \
- CONFIG_MACH_U300_2MB_ALIGNMENT_FIX
- res_size = 0x00100000;
-#endif
-#endif
- }
+ memblock_reserve(__pa(swapper_pg_dir), PTRS_PER_PGD * sizeof(pgd_t));
#ifdef CONFIG_SA1111
/*
* Because of the SA1111 DMA bug, we want to preserve our
* precious DMA-able memory...
*/
- res_size = __pa(swapper_pg_dir) - PHYS_OFFSET;
+ memblock_reserve(PHYS_OFFSET, __pa(swapper_pg_dir) - PHYS_OFFSET);
#endif
- if (res_size)
- reserve_bootmem_node(pgdat, PHYS_OFFSET, res_size,
- BOOTMEM_DEFAULT);
}
/*
@@ -940,7 +875,7 @@ static void __init devicemaps_init(struct machine_desc *mdesc)
/*
* Allocate the vector page early.
*/
- vectors = alloc_bootmem_low_pages(PAGE_SIZE);
+ vectors = early_alloc(PAGE_SIZE);
for (addr = VMALLOC_END; addr; addr += PGDIR_SIZE)
pmd_clear(pmd_off_k(addr));
@@ -1011,11 +946,8 @@ static void __init devicemaps_init(struct machine_desc *mdesc)
static void __init kmap_init(void)
{
#ifdef CONFIG_HIGHMEM
- pmd_t *pmd = pmd_off_k(PKMAP_BASE);
- pte_t *pte = alloc_bootmem_low_pages(2 * PTRS_PER_PTE * sizeof(pte_t));
- BUG_ON(!pmd_none(*pmd) || !pte);
- __pmd_populate(pmd, __pa(pte) | _PAGE_KERNEL_TABLE);
- pkmap_page_table = pte + PTRS_PER_PTE;
+ pkmap_page_table = early_pte_alloc(pmd_off_k(PKMAP_BASE),
+ PKMAP_BASE, _PAGE_KERNEL_TABLE);
#endif
}
@@ -1066,17 +998,16 @@ void __init paging_init(struct machine_desc *mdesc)
sanity_check_meminfo();
prepare_page_table();
map_lowmem();
- bootmem_init();
devicemaps_init(mdesc);
kmap_init();
top_pmd = pmd_off_k(0xffff0000);
- /*
- * allocate the zero page. Note that this always succeeds and
- * returns a zeroed result.
- */
- zero_page = alloc_bootmem_low_pages(PAGE_SIZE);
+ /* allocate the zero page. */
+ zero_page = early_alloc(PAGE_SIZE);
+
+ bootmem_init();
+
empty_zero_page = virt_to_page(zero_page);
__flush_dcache_page(NULL, empty_zero_page);
}
diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c
index 33b327379f0..687d02319a4 100644
--- a/arch/arm/mm/nommu.c
+++ b/arch/arm/mm/nommu.c
@@ -6,8 +6,8 @@
#include <linux/module.h>
#include <linux/mm.h>
#include <linux/pagemap.h>
-#include <linux/bootmem.h>
#include <linux/io.h>
+#include <linux/memblock.h>
#include <asm/cacheflush.h>
#include <asm/sections.h>
@@ -17,30 +17,14 @@
#include "mm.h"
-/*
- * Reserve the various regions of node 0
- */
-void __init reserve_node_zero(pg_data_t *pgdat)
+void __init arm_mm_memblock_reserve(void)
{
/*
- * Register the kernel text and data with bootmem.
- * Note that this can only be in node 0.
- */
-#ifdef CONFIG_XIP_KERNEL
- reserve_bootmem_node(pgdat, __pa(_data), _end - _data,
- BOOTMEM_DEFAULT);
-#else
- reserve_bootmem_node(pgdat, __pa(_stext), _end - _stext,
- BOOTMEM_DEFAULT);
-#endif
-
- /*
* Register the exception vector page.
* some architectures which the DRAM is the exception vector to trap,
* alloc_page breaks with error, although it is not NULL, but "0."
*/
- reserve_bootmem_node(pgdat, CONFIG_VECTORS_BASE, PAGE_SIZE,
- BOOTMEM_DEFAULT);
+ memblock_reserve(CONFIG_VECTORS_BASE, PAGE_SIZE);
}
/*
diff --git a/arch/arm/mm/proc-v6.S b/arch/arm/mm/proc-v6.S
index 7a5337ed7d6..2f5a3c23a0f 100644
--- a/arch/arm/mm/proc-v6.S
+++ b/arch/arm/mm/proc-v6.S
@@ -239,7 +239,8 @@ __v6_proc_info:
b __v6_setup
.long cpu_arch_name
.long cpu_elf_name
- .long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP|HWCAP_JAVA
+ /* See also feat_v6_fixup() for HWCAP_TLS */
+ .long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP|HWCAP_JAVA|HWCAP_TLS
.long cpu_v6_name
.long v6_processor_functions
.long v6wbi_tlb_fns
@@ -262,7 +263,7 @@ __pj4_v6_proc_info:
b __v6_setup
.long cpu_arch_name
.long cpu_elf_name
- .long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP
+ .long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP|HWCAP_TLS
.long cpu_pj4_name
.long v6_processor_functions
.long v6wbi_tlb_fns
diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S
index 7aaf88a3b7a..8071bcd4c99 100644
--- a/arch/arm/mm/proc-v7.S
+++ b/arch/arm/mm/proc-v7.S
@@ -344,7 +344,7 @@ __v7_proc_info:
b __v7_setup
.long cpu_arch_name
.long cpu_elf_name
- .long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP
+ .long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP|HWCAP_TLS
.long cpu_v7_name
.long v7_processor_functions
.long v7wbi_tlb_fns
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-22 13:15:28 +0000