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authorRussell King <rmk+kernel@arm.linux.org.uk>2010-05-22 18:18:57 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-07-16 11:06:40 +0100
commit98c672cf1fa2a56f6f43e3f48b1208b83845582c (patch)
tree39ac68eb0d260f090cebabff9a2f2cf8c6bcebd2 /arch/arm/mm
parentb65b4781fbd5846a82cdac0c32818af1a7452d1f (diff)
downloadlinux-98c672cf1fa2a56f6f43e3f48b1208b83845582c.tar.gz
ARM: Move platform memory reservations out of generic code
Move the platform specific bootmem memory reservations out of arch/arm/mm/mmu.c into their respective platform files. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mm')
-rw-r--r--arch/arm/mm/init.c5
-rw-r--r--arch/arm/mm/mm.h3
-rw-r--r--arch/arm/mm/mmu.c63
-rw-r--r--arch/arm/mm/nommu.c2
4 files changed, 10 insertions, 63 deletions
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 4d2720888c5..1a227eea64b 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -358,7 +358,7 @@ static void arm_memory_present(struct meminfo *mi)
}
#endif
-void __init bootmem_init(void)
+void __init bootmem_init(struct machine_desc *mdesc)
{
struct meminfo *mi = &meminfo;
unsigned long min, max_low, max_high;
@@ -380,6 +380,9 @@ void __init bootmem_init(void)
*/
reserve_special_regions();
+ if (mdesc->reserve)
+ mdesc->reserve();
+
/*
* If the initrd is present, reserve its memory.
*/
diff --git a/arch/arm/mm/mm.h b/arch/arm/mm/mm.h
index 7b19c90ab29..afafe4fc543 100644
--- a/arch/arm/mm/mm.h
+++ b/arch/arm/mm/mm.h
@@ -28,5 +28,6 @@ extern void __flush_dcache_page(struct address_space *mapping, struct page *page
#endif
-void __init bootmem_init(void);
+struct machine_desc;
+void __init bootmem_init(struct machine_desc *);
void reserve_special_regions(void);
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index ddb1bee6de7..1676d017a93 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -17,7 +17,6 @@
#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>
@@ -831,8 +830,6 @@ static inline void prepare_page_table(void)
*/
void __init reserve_special_regions(void)
{
- unsigned long res_size = 0;
-
/*
* Register the kernel text and data with bootmem.
* Note that this can only be in node 0.
@@ -850,68 +847,14 @@ void __init reserve_special_regions(void)
reserve_bootmem(__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(0x30003000, 0x1000, BOOTMEM_DEFAULT);
- reserve_bootmem(0x30081000, 0x1000, BOOTMEM_DEFAULT);
- }
-
- if (machine_is_palmld() || machine_is_palmtx()) {
- reserve_bootmem(0xa0000000, 0x1000, BOOTMEM_EXCLUSIVE);
- reserve_bootmem(0xa0200000, 0x1000, BOOTMEM_EXCLUSIVE);
- }
-
- if (machine_is_treo680() || machine_is_centro()) {
- reserve_bootmem(0xa0000000, 0x1000, BOOTMEM_EXCLUSIVE);
- reserve_bootmem(0xa2000000, 0x1000, BOOTMEM_EXCLUSIVE);
- }
-
- if (machine_is_palmt5())
- reserve_bootmem(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
- }
-
#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;
+ reserve_bootmem(PHYS_OFFSET, __pa(swapper_pg_dir) - PHYS_OFFSET,
+ BOOTMEM_DEFAULT);
#endif
- if (res_size)
- reserve_bootmem(PHYS_OFFSET, res_size, BOOTMEM_DEFAULT);
}
/*
@@ -1056,7 +999,7 @@ void __init paging_init(struct machine_desc *mdesc)
sanity_check_meminfo();
prepare_page_table();
map_lowmem();
- bootmem_init();
+ bootmem_init(mdesc);
devicemaps_init(mdesc);
kmap_init();
diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c
index 25376d480b8..ed58ddbbc5b 100644
--- a/arch/arm/mm/nommu.c
+++ b/arch/arm/mm/nommu.c
@@ -46,7 +46,7 @@ void __init reserve_special_regions(void)
*/
void __init paging_init(struct machine_desc *mdesc)
{
- bootmem_init();
+ bootmem_init(mdesc);
}
/*