summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--arch/arm/boot/compressed/Makefile6
-rw-r--r--arch/arm/boot/compressed/decompress.c45
-rw-r--r--arch/arm/boot/compressed/misc.c109
-rw-r--r--arch/arm/boot/compressed/vmlinux.lds.in8
4 files changed, 64 insertions, 104 deletions
diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile
index 2d4d88ba73bf..97c89e7de7d3 100644
--- a/arch/arm/boot/compressed/Makefile
+++ b/arch/arm/boot/compressed/Makefile
@@ -5,7 +5,7 @@
#
HEAD = head.o
-OBJS = misc.o
+OBJS = misc.o decompress.o
FONTC = $(srctree)/drivers/video/console/font_acorn_8x8.c
#
@@ -106,10 +106,6 @@ lib1funcs = $(obj)/lib1funcs.o
$(obj)/lib1funcs.S: $(srctree)/arch/$(SRCARCH)/lib/lib1funcs.S FORCE
$(call cmd,shipped)
-# Don't allow any static data in misc.o, which
-# would otherwise mess up our GOT table
-CFLAGS_misc.o := -Dstatic=
-
$(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/$(HEAD) $(obj)/piggy.$(suffix_y).o \
$(addprefix $(obj)/, $(OBJS)) $(lib1funcs) FORCE
$(call if_changed,ld)
diff --git a/arch/arm/boot/compressed/decompress.c b/arch/arm/boot/compressed/decompress.c
new file mode 100644
index 000000000000..0da382f33157
--- /dev/null
+++ b/arch/arm/boot/compressed/decompress.c
@@ -0,0 +1,45 @@
+#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/linkage.h>
+#include <asm/string.h>
+
+extern unsigned long free_mem_ptr;
+extern unsigned long free_mem_end_ptr;
+extern void error(char *);
+
+#define STATIC static
+
+#define ARCH_HAS_DECOMP_WDOG
+
+/* Diagnostic functions */
+#ifdef DEBUG
+# define Assert(cond,msg) {if(!(cond)) error(msg);}
+# define Trace(x) fprintf x
+# define Tracev(x) {if (verbose) fprintf x ;}
+# define Tracevv(x) {if (verbose>1) fprintf x ;}
+# define Tracec(c,x) {if (verbose && (c)) fprintf x ;}
+# define Tracecv(c,x) {if (verbose>1 && (c)) fprintf x ;}
+#else
+# define Assert(cond,msg)
+# define Trace(x)
+# define Tracev(x)
+# define Tracevv(x)
+# define Tracec(c,x)
+# define Tracecv(c,x)
+#endif
+
+#ifdef CONFIG_KERNEL_GZIP
+#include "../../../../lib/decompress_inflate.c"
+#endif
+
+#ifdef CONFIG_KERNEL_LZO
+#include "../../../../lib/decompress_unlzo.c"
+#endif
+
+void do_decompress(u8 *input, int len, u8 *output, void (*error)(char *x))
+{
+ decompress(input, len, NULL, NULL, output, NULL, error);
+}
diff --git a/arch/arm/boot/compressed/misc.c b/arch/arm/boot/compressed/misc.c
index 7e0fe4d42c7b..4c663fbe0a05 100644
--- a/arch/arm/boot/compressed/misc.c
+++ b/arch/arm/boot/compressed/misc.c
@@ -23,8 +23,8 @@ unsigned int __machine_arch_type;
#include <linux/compiler.h> /* for inline */
#include <linux/types.h> /* for size_t */
#include <linux/stddef.h> /* for NULL */
-#include <asm/string.h>
#include <linux/linkage.h>
+#include <asm/string.h>
#include <asm/unaligned.h>
@@ -106,57 +106,7 @@ static void putstr(const char *ptr)
#endif
-#define __ptr_t void *
-
-#define memzero(s,n) __memzero(s,n)
-
-/*
- * Optimised C version of memzero for the ARM.
- */
-void __memzero (__ptr_t s, size_t n)
-{
- union { void *vp; unsigned long *ulp; unsigned char *ucp; } u;
- int i;
-
- u.vp = s;
-
- for (i = n >> 5; i > 0; i--) {
- *u.ulp++ = 0;
- *u.ulp++ = 0;
- *u.ulp++ = 0;
- *u.ulp++ = 0;
- *u.ulp++ = 0;
- *u.ulp++ = 0;
- *u.ulp++ = 0;
- *u.ulp++ = 0;
- }
-
- if (n & 1 << 4) {
- *u.ulp++ = 0;
- *u.ulp++ = 0;
- *u.ulp++ = 0;
- *u.ulp++ = 0;
- }
-
- if (n & 1 << 3) {
- *u.ulp++ = 0;
- *u.ulp++ = 0;
- }
-
- if (n & 1 << 2)
- *u.ulp++ = 0;
-
- if (n & 1 << 1) {
- *u.ucp++ = 0;
- *u.ucp++ = 0;
- }
-
- if (n & 1)
- *u.ucp++ = 0;
-}
-
-static inline __ptr_t memcpy(__ptr_t __dest, __const __ptr_t __src,
- size_t __n)
+void *memcpy(void *__dest, __const void *__src, size_t __n)
{
int i = 0;
unsigned char *d = (unsigned char *)__dest, *s = (unsigned char *)__src;
@@ -193,59 +143,20 @@ static inline __ptr_t memcpy(__ptr_t __dest, __const __ptr_t __src,
/*
* gzip delarations
*/
-#define STATIC static
-
-/* Diagnostic functions */
-#ifdef DEBUG
-# define Assert(cond,msg) {if(!(cond)) error(msg);}
-# define Trace(x) fprintf x
-# define Tracev(x) {if (verbose) fprintf x ;}
-# define Tracevv(x) {if (verbose>1) fprintf x ;}
-# define Tracec(c,x) {if (verbose && (c)) fprintf x ;}
-# define Tracecv(c,x) {if (verbose>1 && (c)) fprintf x ;}
-#else
-# define Assert(cond,msg)
-# define Trace(x)
-# define Tracev(x)
-# define Tracevv(x)
-# define Tracec(c,x)
-# define Tracecv(c,x)
-#endif
-
-static void error(char *m);
-
extern char input_data[];
extern char input_data_end[];
-static unsigned char *output_data;
-static unsigned long output_ptr;
-
-static void error(char *m);
+unsigned char *output_data;
+unsigned long output_ptr;
-static void putstr(const char *);
-
-static unsigned long free_mem_ptr;
-static unsigned long free_mem_end_ptr;
-
-#ifdef STANDALONE_DEBUG
-#define NO_INFLATE_MALLOC
-#endif
-
-#define ARCH_HAS_DECOMP_WDOG
-
-#ifdef CONFIG_KERNEL_GZIP
-#include "../../../../lib/decompress_inflate.c"
-#endif
-
-#ifdef CONFIG_KERNEL_LZO
-#include "../../../../lib/decompress_unlzo.c"
-#endif
+unsigned long free_mem_ptr;
+unsigned long free_mem_end_ptr;
#ifndef arch_error
#define arch_error(x)
#endif
-static void error(char *x)
+void error(char *x)
{
arch_error(x);
@@ -261,6 +172,8 @@ asmlinkage void __div0(void)
error("Attempting division by 0!");
}
+extern void do_decompress(u8 *input, int len, u8 *output, void (*error)(char *x));
+
#ifndef STANDALONE_DEBUG
unsigned long
@@ -281,8 +194,8 @@ decompress_kernel(unsigned long output_start, unsigned long free_mem_ptr_p,
output_ptr = get_unaligned_le32(tmp);
putstr("Uncompressing Linux...");
- decompress(input_data, input_data_end - input_data,
- NULL, NULL, output_data, NULL, error);
+ do_decompress(input_data, input_data_end - input_data,
+ output_data, error);
putstr(" done, booting the kernel.\n");
return output_ptr;
}
diff --git a/arch/arm/boot/compressed/vmlinux.lds.in b/arch/arm/boot/compressed/vmlinux.lds.in
index a5924b9b88bd..7ca9ecff652f 100644
--- a/arch/arm/boot/compressed/vmlinux.lds.in
+++ b/arch/arm/boot/compressed/vmlinux.lds.in
@@ -14,6 +14,13 @@ SECTIONS
/DISCARD/ : {
*(.ARM.exidx*)
*(.ARM.extab*)
+ /*
+ * Discard any r/w data - this produces a link error if we have any,
+ * which is required for PIC decompression. Local data generates
+ * GOTOFF relocations, which prevents it being relocated independently
+ * of the text/got segments.
+ */
+ *(.data)
}
. = TEXT_START;
@@ -40,7 +47,6 @@ SECTIONS
.got : { *(.got) }
_got_end = .;
.got.plt : { *(.got.plt) }
- .data : { *(.data) }
_edata = .;
. = BSS_START;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 16:09:48 +0000