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Merge branch 'devel-stable' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm

Browse Source 
* 'devel-stable' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm: (178 commits)
  ARM: 7139/1: fix compilation with CONFIG_ARM_ATAG_DTB_COMPAT and large TEXT_OFFSET
  ARM: gic, local timers: use the request_percpu_irq() interface
  ARM: gic: consolidate PPI handling
  ARM: switch from NO_MACH_MEMORY_H to NEED_MACH_MEMORY_H
  ARM: mach-s5p64x0: remove mach/memory.h
  ARM: mach-s3c64xx: remove mach/memory.h
  ARM: plat-mxc: remove mach/memory.h
  ARM: mach-prima2: remove mach/memory.h
  ARM: mach-zynq: remove mach/memory.h
  ARM: mach-bcmring: remove mach/memory.h
  ARM: mach-davinci: remove mach/memory.h
  ARM: mach-pxa: remove mach/memory.h
  ARM: mach-ixp4xx: remove mach/memory.h
  ARM: mach-h720x: remove mach/memory.h
  ARM: mach-vt8500: remove mach/memory.h
  ARM: mach-s5pc100: remove mach/memory.h
  ARM: mach-tegra: remove mach/memory.h
  ARM: plat-tcc: remove mach/memory.h
  ARM: mach-mmp: remove mach/memory.h
  ARM: mach-cns3xxx: remove mach/memory.h
  ...

Fix up mostly pretty trivial conflicts in:
 - arch/arm/Kconfig
 - arch/arm/include/asm/localtimer.h
 - arch/arm/kernel/Makefile
 - arch/arm/mach-shmobile/board-ap4evb.c
 - arch/arm/mach-u300/core.c
 - arch/arm/mm/dma-mapping.c
 - arch/arm/mm/proc-v7.S
 - arch/arm/plat-omap/Kconfig
largely due to some CONFIG option renaming (ie CONFIG_PM_SLEEP ->
CONFIG_ARM_CPU_SUSPEND for the arm-specific suspend code etc) and
addition of NEED_MACH_MEMORY_H next to HAVE_IDE.
This commit is contained in:
Linus Torvalds
2011-10-28 12:02:27 -07:00
parent f362f98e7c 531a6a9417
commit 1fdb24e969
524 changed files with 7579 additions and 2900 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
arch/arm/boot/compressed/.gitignore vendored
View File

@@ -5,3 +5,12 @@ piggy.lzo
piggy.lzma
vmlinux
vmlinux.lds
# borrowed libfdt files
fdt.c
fdt.h
fdt_ro.c
fdt_rw.c
fdt_wip.c
libfdt.h
libfdt_internal.h

32
arch/arm/boot/compressed/Makefile
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@@ -26,6 +26,10 @@ HEAD = head.o
OBJS += misc.o decompress.o
FONTC = $(srctree)/drivers/video/console/font_acorn_8x8.c
# string library code (-Os is enforced to keep it much smaller)
OBJS += string.o
CFLAGS_string.o := -Os
#
# Architecture dependencies
#
@@ -89,21 +93,41 @@ suffix_$(CONFIG_KERNEL_GZIP) = gzip
suffix_$(CONFIG_KERNEL_LZO) = lzo
suffix_$(CONFIG_KERNEL_LZMA) = lzma
# Borrowed libfdt files for the ATAG compatibility mode
libfdt := fdt_rw.c fdt_ro.c fdt_wip.c fdt.c
libfdt_hdrs := fdt.h libfdt.h libfdt_internal.h
libfdt_objs := $(addsuffix .o, $(basename $(libfdt)))
$(addprefix $(obj)/,$(libfdt) $(libfdt_hdrs)): $(obj)/%: $(srctree)/scripts/dtc/libfdt/%
$(call cmd,shipped)
$(addprefix $(obj)/,$(libfdt_objs) atags_to_fdt.o): \
$(addprefix $(obj)/,$(libfdt_hdrs))
ifeq ($(CONFIG_ARM_ATAG_DTB_COMPAT),y)
OBJS += $(libfdt_objs) atags_to_fdt.o
endif
targets := vmlinux vmlinux.lds \
piggy.$(suffix_y) piggy.$(suffix_y).o \
font.o font.c head.o misc.o $(OBJS)
lib1funcs.o lib1funcs.S font.o font.c head.o misc.o $(OBJS)
# Make sure files are removed during clean
extra-y += piggy.gzip piggy.lzo piggy.lzma lib1funcs.S
extra-y += piggy.gzip piggy.lzo piggy.lzma lib1funcs.S $(libfdt) $(libfdt_hdrs)
ifeq ($(CONFIG_FUNCTION_TRACER),y)
ORIG_CFLAGS := $(KBUILD_CFLAGS)
KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS))
endif
ccflags-y := -fpic -fno-builtin
ccflags-y := -fpic -fno-builtin -I$(obj)
asflags-y := -Wa,-march=all
# Supply kernel BSS size to the decompressor via a linker symbol.
KBSS_SZ = $(shell size $(obj)/../../../../vmlinux | awk 'END{print $$3}')
LDFLAGS_vmlinux = --defsym _kernel_bss_size=$(KBSS_SZ)
# Supply ZRELADDR to the decompressor via a linker symbol.
ifneq ($(CONFIG_AUTO_ZRELADDR),y)
LDFLAGS_vmlinux += --defsym zreladdr=$(ZRELADDR)
@@ -123,7 +147,7 @@ LDFLAGS_vmlinux += -T
# For __aeabi_uidivmod
lib1funcs = $(obj)/lib1funcs.o
$(obj)/lib1funcs.S: $(srctree)/arch/$(SRCARCH)/lib/lib1funcs.S FORCE
$(obj)/lib1funcs.S: $(srctree)/arch/$(SRCARCH)/lib/lib1funcs.S
$(call cmd,shipped)
# We need to prevent any GOTOFF relocs being used with references

97
arch/arm/boot/compressed/atags_to_fdt.c Normal file
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@@ -0,0 +1,97 @@
#include <asm/setup.h>
#include <libfdt.h>
static int node_offset(void *fdt, const char *node_path)
{
int offset = fdt_path_offset(fdt, node_path);
if (offset == -FDT_ERR_NOTFOUND)
offset = fdt_add_subnode(fdt, 0, node_path);
return offset;
}
static int setprop(void *fdt, const char *node_path, const char *property,
uint32_t *val_array, int size)
{
int offset = node_offset(fdt, node_path);
if (offset < 0)
return offset;
return fdt_setprop(fdt, offset, property, val_array, size);
}
static int setprop_string(void *fdt, const char *node_path,
const char *property, const char *string)
{
int offset = node_offset(fdt, node_path);
if (offset < 0)
return offset;
return fdt_setprop_string(fdt, offset, property, string);
}
static int setprop_cell(void *fdt, const char *node_path,
const char *property, uint32_t val)
{
int offset = node_offset(fdt, node_path);
if (offset < 0)
return offset;
return fdt_setprop_cell(fdt, offset, property, val);
}
/*
* Convert and fold provided ATAGs into the provided FDT.
*
* REturn values:
* = 0 -> pretend success
* = 1 -> bad ATAG (may retry with another possible ATAG pointer)
* < 0 -> error from libfdt
*/
int atags_to_fdt(void *atag_list, void *fdt, int total_space)
{
struct tag *atag = atag_list;
uint32_t mem_reg_property[2 * NR_BANKS];
int memcount = 0;
int ret;
/* make sure we've got an aligned pointer */
if ((u32)atag_list & 0x3)
return 1;
/* if we get a DTB here we're done already */
if (*(u32 *)atag_list == fdt32_to_cpu(FDT_MAGIC))
return 0;
/* validate the ATAG */
if (atag->hdr.tag != ATAG_CORE ||
(atag->hdr.size != tag_size(tag_core) &&
atag->hdr.size != 2))
return 1;
/* let's give it all the room it could need */
ret = fdt_open_into(fdt, fdt, total_space);
if (ret < 0)
return ret;
for_each_tag(atag, atag_list) {
if (atag->hdr.tag == ATAG_CMDLINE) {
setprop_string(fdt, "/chosen", "bootargs",
atag->u.cmdline.cmdline);
} else if (atag->hdr.tag == ATAG_MEM) {
if (memcount >= sizeof(mem_reg_property)/4)
continue;
mem_reg_property[memcount++] = cpu_to_fdt32(atag->u.mem.start);
mem_reg_property[memcount++] = cpu_to_fdt32(atag->u.mem.size);
} else if (atag->hdr.tag == ATAG_INITRD2) {
uint32_t initrd_start, initrd_size;
initrd_start = atag->u.initrd.start;
initrd_size = atag->u.initrd.size;
setprop_cell(fdt, "/chosen", "linux,initrd-start",
initrd_start);
setprop_cell(fdt, "/chosen", "linux,initrd-end",
initrd_start + initrd_size);
}
}
if (memcount)
setprop(fdt, "/memory", "reg", mem_reg_property, 4*memcount);
return fdt_pack(fdt);
}

122
arch/arm/boot/compressed/head.S
View File

@@ -216,6 +216,104 @@ restart: adr r0, LC0
mov r10, r6
#endif
mov r5, #0 @ init dtb size to 0
#ifdef CONFIG_ARM_APPENDED_DTB
/*
* r0 = delta
* r2 = BSS start
* r3 = BSS end
* r4 = final kernel address
* r5 = appended dtb size (still unknown)
* r6 = _edata
* r7 = architecture ID
* r8 = atags/device tree pointer
* r9 = size of decompressed image
* r10 = end of this image, including bss/stack/malloc space if non XIP
* r11 = GOT start
* r12 = GOT end
* sp = stack pointer
*
* if there are device trees (dtb) appended to zImage, advance r10 so that the
* dtb data will get relocated along with the kernel if necessary.
*/
ldr lr, [r6, #0]
#ifndef __ARMEB__
ldr r1, =0xedfe0dd0 @ sig is 0xd00dfeed big endian
#else
ldr r1, =0xd00dfeed
#endif
cmp lr, r1
bne dtb_check_done @ not found
#ifdef CONFIG_ARM_ATAG_DTB_COMPAT
/*
* OK... Let's do some funky business here.
* If we do have a DTB appended to zImage, and we do have
* an ATAG list around, we want the later to be translated
* and folded into the former here. To be on the safe side,
* let's temporarily move the stack away into the malloc
* area. No GOT fixup has occurred yet, but none of the
* code we're about to call uses any global variable.
*/
add sp, sp, #0x10000
stmfd sp!, {r0-r3, ip, lr}
mov r0, r8
mov r1, r6
sub r2, sp, r6
bl atags_to_fdt
/*
* If returned value is 1, there is no ATAG at the location
* pointed by r8. Try the typical 0x100 offset from start
* of RAM and hope for the best.
*/
cmp r0, #1
sub r0, r4, #TEXT_OFFSET
add r0, r0, #0x100
mov r1, r6
sub r2, sp, r6
blne atags_to_fdt
ldmfd sp!, {r0-r3, ip, lr}
sub sp, sp, #0x10000
#endif
mov r8, r6 @ use the appended device tree
/*
* Make sure that the DTB doesn't end up in the final
* kernel's .bss area. To do so, we adjust the decompressed
* kernel size to compensate if that .bss size is larger
* than the relocated code.
*/
ldr r5, =_kernel_bss_size
adr r1, wont_overwrite
sub r1, r6, r1
subs r1, r5, r1
addhi r9, r9, r1
/* Get the dtb's size */
ldr r5, [r6, #4]
#ifndef __ARMEB__
/* convert r5 (dtb size) to little endian */
eor r1, r5, r5, ror #16
bic r1, r1, #0x00ff0000
mov r5, r5, ror #8
eor r5, r5, r1, lsr #8
#endif
/* preserve 64-bit alignment */
add r5, r5, #7
bic r5, r5, #7
/* relocate some pointers past the appended dtb */
add r6, r6, r5
add r10, r10, r5
add sp, sp, r5
dtb_check_done:
#endif
/*
* Check to see if we will overwrite ourselves.
* r4 = final kernel address
@@ -223,15 +321,14 @@ restart: adr r0, LC0
* r10 = end of this image, including bss/stack/malloc space if non XIP
* We basically want:
* r4 - 16k page directory >= r10 -> OK
* r4 + image length <= current position (pc) -> OK
* r4 + image length <= address of wont_overwrite -> OK
*/
add r10, r10, #16384
cmp r4, r10
bhs wont_overwrite
add r10, r4, r9
ARM( cmp r10, pc )
THUMB( mov lr, pc )
THUMB( cmp r10, lr )
adr r9, wont_overwrite
cmp r10, r9
bls wont_overwrite
/*
@@ -285,14 +382,16 @@ wont_overwrite:
* r2 = BSS start
* r3 = BSS end
* r4 = kernel execution address
* r5 = appended dtb size (0 if not present)
* r7 = architecture ID
* r8 = atags pointer
* r11 = GOT start
* r12 = GOT end
* sp = stack pointer
*/
teq r0, #0
orrs r1, r0, r5
beq not_relocated
add r11, r11, r0
add r12, r12, r0
@@ -307,12 +406,21 @@ wont_overwrite:
/*
* Relocate all entries in the GOT table.
* Bump bss entries to _edata + dtb size
*/
1: ldr r1, [r11, #0] @ relocate entries in the GOT
add r1, r1, r0 @ table. This fixes up the
str r1, [r11], #4 @ C references.
add r1, r1, r0 @ This fixes up C references
cmp r1, r2 @ if entry >= bss_start &&
cmphs r3, r1 @ bss_end > entry
addhi r1, r1, r5 @ entry += dtb size
str r1, [r11], #4 @ next entry
cmp r11, r12
blo 1b
/* bump our bss pointers too */
add r2, r2, r5
add r3, r3, r5
#else
/*

15
arch/arm/boot/compressed/libfdt_env.h Normal file
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@@ -0,0 +1,15 @@
#ifndef _ARM_LIBFDT_ENV_H
#define _ARM_LIBFDT_ENV_H
#include <linux/types.h>
#include <linux/string.h>
#include <asm/byteorder.h>
#define fdt16_to_cpu(x) be16_to_cpu(x)
#define cpu_to_fdt16(x) cpu_to_be16(x)
#define fdt32_to_cpu(x) be32_to_cpu(x)
#define cpu_to_fdt32(x) cpu_to_be32(x)
#define fdt64_to_cpu(x) be64_to_cpu(x)
#define cpu_to_fdt64(x) cpu_to_be64(x)
#endif

42
arch/arm/boot/compressed/misc.c
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@@ -18,14 +18,9 @@
unsigned int __machine_arch_type;
#define _LINUX_STRING_H_
#include <linux/compiler.h> /* for inline */
#include <linux/types.h> /* for size_t */
#include <linux/stddef.h> /* for NULL */
#include <linux/types.h>
#include <linux/linkage.h>
#include <asm/string.h>
static void putstr(const char *ptr);
extern void error(char *x);
@@ -101,41 +96,6 @@ static void putstr(const char *ptr)
flush();
}
void *memcpy(void *__dest, __const void *__src, size_t __n)
{
int i = 0;
unsigned char *d = (unsigned char *)__dest, *s = (unsigned char *)__src;
for (i = __n >> 3; i > 0; i--) {
*d++ = *s++;
*d++ = *s++;
*d++ = *s++;
*d++ = *s++;
*d++ = *s++;
*d++ = *s++;
*d++ = *s++;
*d++ = *s++;
}
if (__n & 1 << 2) {
*d++ = *s++;
*d++ = *s++;
*d++ = *s++;
*d++ = *s++;
}
if (__n & 1 << 1) {
*d++ = *s++;
*d++ = *s++;
}
if (__n & 1)
*d++ = *s++;
return __dest;
}
/*
* gzip declarations
*/

127
arch/arm/boot/compressed/string.c Normal file
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@@ -0,0 +1,127 @@
/*
* arch/arm/boot/compressed/string.c
*
* Small subset of simple string routines
*/
#include <linux/string.h>
void *memcpy(void *__dest, __const void *__src, size_t __n)
{
int i = 0;
unsigned char *d = (unsigned char *)__dest, *s = (unsigned char *)__src;
for (i = __n >> 3; i > 0; i--) {
*d++ = *s++;
*d++ = *s++;
*d++ = *s++;
*d++ = *s++;
*d++ = *s++;
*d++ = *s++;
*d++ = *s++;
*d++ = *s++;
}
if (__n & 1 << 2) {
*d++ = *s++;
*d++ = *s++;
*d++ = *s++;
*d++ = *s++;
}
if (__n & 1 << 1) {
*d++ = *s++;
*d++ = *s++;
}
if (__n & 1)
*d++ = *s++;
return __dest;
}
void *memmove(void *__dest, __const void *__src, size_t count)
{
unsigned char *d = __dest;
const unsigned char *s = __src;
if (__dest == __src)
return __dest;
if (__dest < __src)
return memcpy(__dest, __src, count);
while (count--)
d[count] = s[count];
return __dest;
}
size_t strlen(const char *s)
{
const char *sc = s;
while (*sc != '\0')
sc++;
return sc - s;
}
int memcmp(const void *cs, const void *ct, size_t count)
{
const unsigned char *su1 = cs, *su2 = ct, *end = su1 + count;
int res = 0;
while (su1 < end) {
res = *su1++ - *su2++;
if (res)
break;
}
return res;
}
int strcmp(const char *cs, const char *ct)
{
unsigned char c1, c2;
int res = 0;
do {
c1 = *cs++;
c2 = *ct++;
res = c1 - c2;
if (res)
break;
} while (c1);
return res;
}
void *memchr(const void *s, int c, size_t count)
{
const unsigned char *p = s;
while (count--)
if ((unsigned char)c == *p++)
return (void *)(p - 1);
return NULL;
}
char *strchr(const char *s, int c)
{
while (*s != (char)c)
if (*s++ == '\0')
return NULL;
return (char *)s;
}
#undef memset
void *memset(void *s, int c, size_t count)
{
char *xs = s;
while (count--)
*xs++ = c;
return s;
}
void __memzero(void *s, size_t count)
{
memset(s, 0, count);
}

4
arch/arm/boot/compressed/vmlinux.lds.in
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@@ -51,6 +51,10 @@ SECTIONS
_got_start = .;
.got : { *(.got) }
_got_end = .;
/* ensure the zImage file size is always a multiple of 64 bits */
/* (without a dummy byte, ld just ignores the empty section) */
.pad : { BYTE(0); . = ALIGN(8); }
_edata = .;
. = BSS_START;