AcoSail/kernel_optimize_test
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Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/mfleming/sh-2.6

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* 'master' of master.kernel.org:/pub/scm/linux/kernel/git/mfleming/sh-2.6:
  sh: Use correct mask when comparing PMB DATA array values
  sh: Do not try merging two 128MB PMB mappings
  sh: Fix zImage load address when CONFIG_32BIT=y
  sh: Fix address to decompress at when CONFIG_32BIT=y
  sh: Assembly friendly __pa and __va definitions
This commit is contained in:
Paul Mundt 2010-04-26 15:54:48 +09:00
commit 35f6cd4a06
5 changed files with 24 additions and 6 deletions
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6
arch/sh/boot/compressed/Makefile
View File

@ -14,10 +14,16 @@ OBJECTS = $(obj)/head_$(BITS).o $(obj)/misc.o $(obj)/cache.o
#
# IMAGE_OFFSET is the load offset of the compression loader
#
ifeq ($(CONFIG_32BIT),y)
IMAGE_OFFSET := $(shell /bin/bash -c 'printf "0x%08x" \
$$[$(CONFIG_MEMORY_START) + \
$(CONFIG_BOOT_LINK_OFFSET)]')
else
IMAGE_OFFSET := $(shell /bin/bash -c 'printf "0x%08x" \
$$[$(CONFIG_PAGE_OFFSET) + \
$(KERNEL_MEMORY) + \
$(CONFIG_BOOT_LINK_OFFSET)]')
endif
LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)

4
arch/sh/boot/compressed/head_32.S
View File

@ -97,7 +97,11 @@ init_stack_addr:
decompress_kernel_addr:
.long decompress_kernel
kernel_start_addr:
#ifdef CONFIG_32BIT
.long ___pa(_text+PAGE_SIZE)
#else
.long _text+PAGE_SIZE
#endif
.align 9
fake_headers_as_bzImage:

13
arch/sh/include/asm/page.h
View File

@ -128,13 +128,18 @@ typedef struct page *pgtable_t;
* added or subtracted as required.
*/
#ifdef CONFIG_PMB
#define __pa(x) ((unsigned long)(x)-PAGE_OFFSET+__MEMORY_START)
#define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET-__MEMORY_START))
#define ___pa(x) ((x)-PAGE_OFFSET+__MEMORY_START)
#define ___va(x) ((x)+PAGE_OFFSET-__MEMORY_START)
#else
#define __pa(x) ((unsigned long)(x)-PAGE_OFFSET)
#define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET))
#define ___pa(x) ((x)-PAGE_OFFSET)
#define ___va(x) ((x)+PAGE_OFFSET)
#endif
#ifndef __ASSEMBLY__
#define __pa(x) ___pa((unsigned long)x)
#define __va(x) (void *)___va((unsigned long)x)
#endif /* !__ASSEMBLY__ */
#ifdef CONFIG_UNCACHED_MAPPING
#define UNCAC_ADDR(addr) ((addr) - PAGE_OFFSET + uncached_start)
#define CAC_ADDR(addr) ((addr) - uncached_start + PAGE_OFFSET)

5
arch/sh/kernel/head_32.S
View File

@ -131,6 +131,7 @@ ENTRY(_stext)
* r8 = scratch register
* r9 = scratch register
* r10 = number of PMB entries we've setup
* r11 = scratch register
*/
mov.l .LMMUCR, r1 /* Flush the TLB */
@ -167,8 +168,9 @@ ENTRY(_stext)
.Lvalidate_existing_mappings:
mov.l .LPMB_DATA_MASK, r11
mov.l @r7, r8
and r0, r8
and r11, r8
cmp/eq r0, r8 /* Check for valid __MEMORY_START mappings */
bt .Lpmb_done
@ -341,6 +343,7 @@ ENTRY(stack_start)
#ifdef CONFIG_PMB
.LPMB_ADDR: .long PMB_ADDR
.LPMB_DATA: .long PMB_DATA
.LPMB_DATA_MASK: .long PMB_PFN_MASK | PMB_V
.LFIRST_ADDR_ENTRY: .long PAGE_OFFSET | PMB_V
.LFIRST_DATA_ENTRY: .long __MEMORY_START | PMB_V
.LMMUCR: .long MMUCR

2
arch/sh/mm/pmb.c
View File

@ -681,7 +681,7 @@ static void __init pmb_merge(struct pmb_entry *head)
/*
* The merged page size must be valid.
*/
if (!pmb_size_valid(newsize))
if (!depth || !pmb_size_valid(newsize))
return;
head->flags &= ~PMB_SZ_MASK;