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Diffstat (limited to 'arch/arm/boot/compressed/misc.c')
-rw-r--r--arch/arm/boot/compressed/misc.c274
1 files changed, 45 insertions, 229 deletions
diff --git a/arch/arm/boot/compressed/misc.c b/arch/arm/boot/compressed/misc.c
index 9e6e512f011..d4f891f5699 100644
--- a/arch/arm/boot/compressed/misc.c
+++ b/arch/arm/boot/compressed/misc.c
@@ -19,22 +19,17 @@
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>
-
-#ifdef STANDALONE_DEBUG
-#define putstr printf
-#else
+#include <linux/types.h>
+#include <linux/linkage.h>
static void putstr(const char *ptr);
+extern void error(char *x);
-#include <linux/compiler.h>
-#include <mach/uncompress.h>
+#include CONFIG_UNCOMPRESS_INCLUDE
#ifdef CONFIG_DEBUG_ICEDCC
-#ifdef CONFIG_CPU_V6
+#if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_V6K) || defined(CONFIG_CPU_V7)
static void icedcc_putc(int ch)
{
@@ -49,6 +44,8 @@ static void icedcc_putc(int ch)
asm("mcr p14, 0, %0, c0, c5, 0" : : "r" (ch));
}
+
+
#elif defined(CONFIG_CPU_XSCALE)
static void icedcc_putc(int ch)
@@ -84,7 +81,6 @@ static void icedcc_putc(int ch)
#endif
#define putc(ch) icedcc_putc(ch)
-#define flush() do { } while (0)
#endif
static void putstr(const char *ptr)
@@ -100,253 +96,73 @@ static void putstr(const char *ptr)
flush();
}
-#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)
-{
- 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 delarations
+ * gzip declarations
*/
-#define OF(args) args
-#define STATIC static
-
-typedef unsigned char uch;
-typedef unsigned short ush;
-typedef unsigned long ulg;
-
-#define WSIZE 0x8000 /* Window size must be at least 32k, */
- /* and a power of two */
-
-static uch *inbuf; /* input buffer */
-static uch window[WSIZE]; /* Sliding window buffer */
-
-static unsigned insize; /* valid bytes in inbuf */
-static unsigned inptr; /* index of next byte to be processed in inbuf */
-static unsigned outcnt; /* bytes in output buffer */
-
-/* gzip flag byte */
-#define ASCII_FLAG 0x01 /* bit 0 set: file probably ascii text */
-#define CONTINUATION 0x02 /* bit 1 set: continuation of multi-part gzip file */
-#define EXTRA_FIELD 0x04 /* bit 2 set: extra field present */
-#define ORIG_NAME 0x08 /* bit 3 set: original file name present */
-#define COMMENT 0x10 /* bit 4 set: file comment present */
-#define ENCRYPTED 0x20 /* bit 5 set: file is encrypted */
-#define RESERVED 0xC0 /* bit 6,7: reserved */
-
-#define get_byte() (inptr < insize ? inbuf[inptr++] : fill_inbuf())
-
-/* 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 int fill_inbuf(void);
-static void flush_window(void);
-static void error(char *m);
-
extern char input_data[];
extern char input_data_end[];
-static uch *output_data;
-static ulg output_ptr;
-static ulg bytes_out;
+unsigned char *output_data;
-static void error(char *m);
+unsigned long free_mem_ptr;
+unsigned long free_mem_end_ptr;
-static void putstr(const char *);
-
-extern int end;
-static ulg free_mem_ptr;
-static ulg free_mem_end_ptr;
-
-#ifdef STANDALONE_DEBUG
-#define NO_INFLATE_MALLOC
+#ifndef arch_error
+#define arch_error(x)
#endif
-#define ARCH_HAS_DECOMP_WDOG
-
-#include "../../../../lib/inflate.c"
-
-/* ===========================================================================
- * Fill the input buffer. This is called only when the buffer is empty
- * and at least one byte is really needed.
- */
-int fill_inbuf(void)
+void error(char *x)
{
- if (insize != 0)
- error("ran out of input data");
+ arch_error(x);
- inbuf = input_data;
- insize = &input_data_end[0] - &input_data[0];
+ putstr("\n\n");
+ putstr(x);
+ putstr("\n\n -- System halted");
- inptr = 1;
- return inbuf[0];
+ while(1); /* Halt */
}
-/* ===========================================================================
- * Write the output window window[0..outcnt-1] and update crc and bytes_out.
- * (Used for the decompressed data only.)
- */
-void flush_window(void)
+asmlinkage void __div0(void)
{
- ulg c = crc;
- unsigned n;
- uch *in, *out, ch;
-
- in = window;
- out = &output_data[output_ptr];
- for (n = 0; n < outcnt; n++) {
- ch = *out++ = *in++;
- c = crc_32_tab[((int)c ^ ch) & 0xff] ^ (c >> 8);
- }
- crc = c;
- bytes_out += (ulg)outcnt;
- output_ptr += (ulg)outcnt;
- outcnt = 0;
- putstr(".");
+ error("Attempting division by 0!");
}
-#ifndef arch_error
-#define arch_error(x)
-#endif
+unsigned long __stack_chk_guard;
-static void error(char *x)
+void __stack_chk_guard_setup(void)
{
- arch_error(x);
-
- putstr("\n\n");
- putstr(x);
- putstr("\n\n -- System halted");
+ __stack_chk_guard = 0x000a0dff;
+}
- while(1); /* Halt */
+void __stack_chk_fail(void)
+{
+ error("stack-protector: Kernel stack is corrupted\n");
}
-#ifndef STANDALONE_DEBUG
+extern int do_decompress(u8 *input, int len, u8 *output, void (*error)(char *x));
-ulg
-decompress_kernel(ulg output_start, ulg free_mem_ptr_p, ulg free_mem_ptr_end_p,
- int arch_id)
+
+void
+decompress_kernel(unsigned long output_start, unsigned long free_mem_ptr_p,
+ unsigned long free_mem_ptr_end_p,
+ int arch_id)
{
- output_data = (uch *)output_start; /* Points to kernel start */
+ int ret;
+
+ __stack_chk_guard_setup();
+
+ output_data = (unsigned char *)output_start;
free_mem_ptr = free_mem_ptr_p;
free_mem_end_ptr = free_mem_ptr_end_p;
__machine_arch_type = arch_id;
arch_decomp_setup();
- makecrc();
putstr("Uncompressing Linux...");
- gunzip();
- putstr(" done, booting the kernel.\n");
- return output_ptr;
+ ret = do_decompress(input_data, input_data_end - input_data,
+ output_data, error);
+ if (ret)
+ error("decompressor returned an error");
+ else
+ putstr(" done, booting the kernel.\n");
}
-#else
-
-char output_buffer[1500*1024];
-
-int main()
-{
- output_data = output_buffer;
-
- makecrc();
- putstr("Uncompressing Linux...");
- gunzip();
- putstr("done.\n");
- return 0;
-}
-#endif
-
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