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-rw-r--r--arch/cris/arch-v10/boot/compressed/Makefile14
-rw-r--r--arch/cris/arch-v10/boot/compressed/decompress.ld3
-rw-r--r--arch/cris/arch-v10/boot/compressed/head.S98
-rw-r--r--arch/cris/arch-v10/boot/compressed/misc.c170
4 files changed, 127 insertions, 158 deletions
diff --git a/arch/cris/arch-v10/boot/compressed/Makefile b/arch/cris/arch-v10/boot/compressed/Makefile
index 4a031cb27eb9..08d943ce4be7 100644
--- a/arch/cris/arch-v10/boot/compressed/Makefile
+++ b/arch/cris/arch-v10/boot/compressed/Makefile
@@ -2,12 +2,10 @@
# arch/cris/arch-v10/boot/compressed/Makefile
#
-CC = gcc-cris -melf $(LINUXINCLUDE)
-ccflags-y += -O2
-LD = ld-cris
-ldflags-y += -T $(obj)/decompress.ld
+asflags-y += $(LINUXINCLUDE)
+ccflags-y += -O2 $(LINUXINCLUDE)
+ldflags-y += -T $(srctree)/$(obj)/decompress.ld
OBJECTS = $(obj)/head.o $(obj)/misc.o
-OBJCOPY = objcopy-cris
OBJCOPYFLAGS = -O binary --remove-section=.bss
quiet_cmd_image = BUILD $@
@@ -21,12 +19,6 @@ $(obj)/decompress.o: $(OBJECTS) FORCE
$(obj)/decompress.bin: $(obj)/decompress.o FORCE
$(call if_changed,objcopy)
-$(obj)/head.o: $(obj)/head.S .config
- @$(CC) -D__ASSEMBLY__ -traditional -c $< -o $@
-
-$(obj)/misc.o: $(obj)/misc.c .config
- @$(CC) -D__KERNEL__ -c $< -o $@
-
$(obj)/vmlinux: $(obj)/piggy.gz $(obj)/decompress.bin FORCE
$(call if_changed,image)
diff --git a/arch/cris/arch-v10/boot/compressed/decompress.ld b/arch/cris/arch-v10/boot/compressed/decompress.ld
index 0b0a14fe6177..e80f4594d543 100644
--- a/arch/cris/arch-v10/boot/compressed/decompress.ld
+++ b/arch/cris/arch-v10/boot/compressed/decompress.ld
@@ -1,4 +1,5 @@
-OUTPUT_FORMAT(elf32-us-cris)
+/* OUTPUT_FORMAT(elf32-us-cris) */
+OUTPUT_FORMAT(elf32-cris)
MEMORY
{
diff --git a/arch/cris/arch-v10/boot/compressed/head.S b/arch/cris/arch-v10/boot/compressed/head.S
index 610bdb237553..981fbae84959 100644
--- a/arch/cris/arch-v10/boot/compressed/head.S
+++ b/arch/cris/arch-v10/boot/compressed/head.S
@@ -15,77 +15,77 @@
#define COMMAND_LINE_MAGIC 0x87109563
;; Exported symbols
-
- .globl _input_data
-
+ .globl input_data
+
+
.text
nop
di
;; We need to initialze DRAM registers before we start using the DRAM
-
- cmp.d RAM_INIT_MAGIC, r8 ; Already initialized?
+
+ cmp.d RAM_INIT_MAGIC, $r8 ; Already initialized?
beq dram_init_finished
nop
-
+
#include "../../lib/dram_init.S"
-
-dram_init_finished:
-
+
+dram_init_finished:
+
;; Initiate the PA and PB ports
- move.b CONFIG_ETRAX_DEF_R_PORT_PA_DATA, r0
- move.b r0, [R_PORT_PA_DATA]
+ move.b CONFIG_ETRAX_DEF_R_PORT_PA_DATA, $r0
+ move.b $r0, [R_PORT_PA_DATA]
- move.b CONFIG_ETRAX_DEF_R_PORT_PA_DIR, r0
- move.b r0, [R_PORT_PA_DIR]
+ move.b CONFIG_ETRAX_DEF_R_PORT_PA_DIR, $r0
+ move.b $r0, [R_PORT_PA_DIR]
- move.b CONFIG_ETRAX_DEF_R_PORT_PB_DATA, r0
- move.b r0, [R_PORT_PB_DATA]
+ move.b CONFIG_ETRAX_DEF_R_PORT_PB_DATA, $r0
+ move.b $r0, [R_PORT_PB_DATA]
- move.b CONFIG_ETRAX_DEF_R_PORT_PB_DIR, r0
- move.b r0, [R_PORT_PB_DIR]
+ move.b CONFIG_ETRAX_DEF_R_PORT_PB_DIR, $r0
+ move.b $r0, [R_PORT_PB_DIR]
;; Setup the stack to a suitably high address.
;; We assume 8 MB is the minimum DRAM in an eLinux
;; product and put the sp at the top for now.
- move.d 0x40800000, sp
+ move.d 0x40800000, $sp
;; Figure out where the compressed piggyback image is
;; in the flash (since we wont try to copy it to DRAM
;; before unpacking). It is at _edata, but in flash.
;; Use (_edata - basse) as offset to the current PC.
-
-basse: move.d pc, r5
- and.d 0x7fffffff, r5 ; strip any non-cache bit
- subq 2, r5 ; compensate for the move.d pc instr
- move.d r5, r0 ; save for later - flash address of 'basse'
- add.d _edata, r5
- sub.d basse, r5 ; r5 = flash address of '_edata'
-
+
+basse: move.d $pc, $r5
+ and.d 0x7fffffff, $r5 ; strip any non-cache bit
+ subq 2, $r5 ; compensate for the move.d $pc instr
+ move.d $r5, $r0 ; save for later - flash address of 'basse'
+ add.d _edata, $r5
+ sub.d basse, $r5 ; $r5 = flash address of '_edata'
+
;; Copy text+data to DRAM
-
- move.d basse, r1 ; destination
- move.d _edata, r2 ; end destination
-1: move.w [r0+], r3
- move.w r3, [r1+]
- cmp.d r2, r1
+
+ move.d basse, $r1 ; destination
+ move.d _edata, $r2 ; end destination
+1: move.w [$r0+], $r3
+ move.w $r3, [$r1+]
+ cmp.d $r2, $r1
bcs 1b
nop
- move.d r5, [_input_data] ; for the decompressor
+ move.d $r5, [input_data] ; for the decompressor
;; Clear the decompressors BSS (between _edata and _end)
-
- moveq 0, r0
- move.d _edata, r1
- move.d _end, r2
-1: move.w r0, [r1+]
- cmp.d r2, r1
+
+ moveq 0, $r0
+ move.d _edata, $r1
+ move.d _end, $r2
+1: move.w $r0, [$r1+]
+ cmp.d $r2, $r1
bcs 1b
nop
@@ -94,16 +94,16 @@ basse: move.d pc, r5
move.d $r10, [$r12]
move.d _cmd_line_addr, $r12
move.d $r11, [$r12]
-
- ;; Do the decompression and save compressed size in _inptr
- jsr _decompress_kernel
-
- ;; Put start address of root partition in r9 so the kernel can use it
+ ;; Do the decompression and save compressed size in inptr
+
+ jsr decompress_kernel
+
+ ;; Put start address of root partition in $r9 so the kernel can use it
;; when mounting from flash
- move.d [_input_data], r9 ; flash address of compressed kernel
- add.d [_inptr], r9 ; size of compressed kernel
+ move.d [input_data], $r9 ; flash address of compressed kernel
+ add.d [inptr], $r9 ; size of compressed kernel
;; Restore command line magic and address.
move.d _cmd_line_magic, $r10
@@ -112,12 +112,12 @@ basse: move.d pc, r5
move.d [$r11], $r11
;; Enter the decompressed kernel
- move.d RAM_INIT_MAGIC, r8 ; Tell kernel that DRAM is initialized
+ move.d RAM_INIT_MAGIC, $r8 ; Tell kernel that DRAM is initialized
jump 0x40004000 ; kernel is linked to this address
-
+
.data
-_input_data:
+input_data:
.dword 0 ; used by the decompressor
_cmd_line_magic:
.dword 0
diff --git a/arch/cris/arch-v10/boot/compressed/misc.c b/arch/cris/arch-v10/boot/compressed/misc.c
index 9a43ab19391e..d933c89889db 100644
--- a/arch/cris/arch-v10/boot/compressed/misc.c
+++ b/arch/cris/arch-v10/boot/compressed/misc.c
@@ -29,12 +29,10 @@
#define OF(args) args
#define STATIC static
-void* memset(void* s, int c, size_t n);
-void* memcpy(void* __dest, __const void* __src,
- size_t __n);
-
-#define memzero(s, n) memset ((s), 0, (n))
+void *memset(void *s, int c, size_t n);
+void *memcpy(void *__dest, __const void *__src, size_t __n);
+#define memzero(s, n) memset((s), 0, (n))
typedef unsigned char uch;
typedef unsigned short ush;
@@ -62,79 +60,57 @@ static unsigned outcnt = 0; /* bytes in output buffer */
#define ENCRYPTED 0x20 /* bit 5 set: file is encrypted */
#define RESERVED 0xC0 /* bit 6,7: reserved */
-#define get_byte() inbuf[inptr++]
-
+#define get_byte() (inbuf[inptr++])
+
/* Diagnostic functions */
#ifdef DEBUG
-# define Assert(cond,msg) {if(!(cond)) error(msg);}
+# define Assert(cond, msg) do { \
+ if (!(cond)) \
+ error(msg); \
+ } while (0)
# 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 ;}
+# define Tracev(x) do { \
+ if (verbose) \
+ fprintf x; \
+ } while (0)
+# define Tracevv(x) do { \
+ if (verbose > 1) \
+ fprintf x; \
+ } while (0)
+# define Tracec(c, x) do { \
+ if (verbose && (c)) \
+ fprintf x; \
+ } while (0)
+# define Tracecv(c, x) do { \
+ if (verbose > 1 && (c)) \
+ fprintf x; \
+ } while (0)
#else
-# define Assert(cond,msg)
+# define Assert(cond, msg)
# define Trace(x)
# define Tracev(x)
# define Tracevv(x)
-# define Tracec(c,x)
-# define Tracecv(c,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);
-static void gzip_mark(void **);
-static void gzip_release(void **);
extern char *input_data; /* lives in head.S */
static long bytes_out = 0;
static uch *output_data;
static unsigned long output_ptr = 0;
-
-static void *malloc(int size);
-static void free(void *where);
-static void error(char *m);
-static void gzip_mark(void **);
-static void gzip_release(void **);
-
static void puts(const char *);
/* the "heap" is put directly after the BSS ends, at end */
-
-extern int end;
-static long free_mem_ptr = (long)&end;
-
-#include "../../../../../lib/inflate.c"
-
-static void *malloc(int size)
-{
- void *p;
-
- if (size <0) error("Malloc error");
-
- free_mem_ptr = (free_mem_ptr + 3) & ~3; /* Align */
-
- p = (void *)free_mem_ptr;
- free_mem_ptr += size;
-
- return p;
-}
-
-static void free(void *where)
-{ /* Don't care */
-}
-static void gzip_mark(void **ptr)
-{
- *ptr = (void *) free_mem_ptr;
-}
+extern int _end;
+static long free_mem_ptr = (long)&_end;
+static long free_mem_end_ptr;
-static void gzip_release(void **ptr)
-{
- free_mem_ptr = (long) *ptr;
-}
+#include "../../../../../lib/inflate.c"
/* decompressor info and error messages to serial console */
@@ -142,44 +118,47 @@ static void
puts(const char *s)
{
#ifndef CONFIG_ETRAX_DEBUG_PORT_NULL
- while(*s) {
+ while (*s) {
#ifdef CONFIG_ETRAX_DEBUG_PORT0
- while(!(*R_SERIAL0_STATUS & (1 << 5))) ;
+ while (!(*R_SERIAL0_STATUS & (1 << 5))) ;
*R_SERIAL0_TR_DATA = *s++;
#endif
#ifdef CONFIG_ETRAX_DEBUG_PORT1
- while(!(*R_SERIAL1_STATUS & (1 << 5))) ;
+ while (!(*R_SERIAL1_STATUS & (1 << 5))) ;
*R_SERIAL1_TR_DATA = *s++;
#endif
#ifdef CONFIG_ETRAX_DEBUG_PORT2
- while(!(*R_SERIAL2_STATUS & (1 << 5))) ;
+ while (!(*R_SERIAL2_STATUS & (1 << 5))) ;
*R_SERIAL2_TR_DATA = *s++;
#endif
#ifdef CONFIG_ETRAX_DEBUG_PORT3
- while(!(*R_SERIAL3_STATUS & (1 << 5))) ;
+ while (!(*R_SERIAL3_STATUS & (1 << 5))) ;
*R_SERIAL3_TR_DATA = *s++;
#endif
}
#endif
}
-void*
-memset(void* s, int c, size_t n)
+void *memset(void *s, int c, size_t n)
{
int i;
- char *ss = (char*)s;
+ char *ss = (char *)s;
- for (i=0;i<n;i++) ss[i] = c;
+ for (i = 0; i < n; i++)
+ ss[i] = c;
+
+ return s;
}
-void*
-memcpy(void* __dest, __const void* __src,
- size_t __n)
+void *memcpy(void *__dest, __const void *__src, size_t __n)
{
int i;
char *d = (char *)__dest, *s = (char *)__src;
- for (i=0;i<__n;i++) d[i] = s[i];
+ for (i = 0; i < __n; i++)
+ d[i] = s[i];
+
+ return __dest;
}
/* ===========================================================================
@@ -187,46 +166,44 @@ memcpy(void* __dest, __const void* __src,
* (Used for the decompressed data only.)
*/
-static void
-flush_window()
+static void flush_window(void)
{
- ulg c = crc; /* temporary variable */
- 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;
+ ulg c = crc; /* temporary variable */
+ unsigned n;
+ uch *in, *out, ch;
+
+ in = window;
+ out = &output_data[output_ptr];
+ for (n = 0; n < outcnt; n++) {
+ ch = *out = *in;
+ out++;
+ in++;
+ c = crc_32_tab[((int)c ^ ch) & 0xff] ^ (c >> 8);
+ }
+ crc = c;
+ bytes_out += (ulg)outcnt;
+ output_ptr += (ulg)outcnt;
+ outcnt = 0;
}
-static void
-error(char *x)
+static void error(char *x)
{
puts("\n\n");
puts(x);
puts("\n\n -- System halted\n");
- while(1); /* Halt */
+ while (1); /* Halt */
}
-void
-setup_normal_output_buffer()
+void setup_normal_output_buffer(void)
{
output_data = (char *)KERNEL_LOAD_ADR;
}
-void
-decompress_kernel()
+void decompress_kernel(void)
{
char revision;
-
+
/* input_data is set in head.S */
inbuf = input_data;
@@ -257,11 +234,10 @@ decompress_kernel()
makecrc();
- __asm__ volatile ("move vr,%0" : "=rm" (revision));
- if (revision < 10)
- {
+ __asm__ volatile ("move $vr,%0" : "=rm" (revision));
+ if (revision < 10) {
puts("You need an ETRAX 100LX to run linux 2.6\n");
- while(1);
+ while (1);
}
puts("Uncompressing Linux...\n");
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.