Commit 66ab3a74 authored by Jesper Nilsson's avatar Jesper Nilsson

CRIS: Merge machine dependent boot/compressed and boot/rescue

Merge the machine dependent boot directories for v10 and v32.
This avoids some code duplication and eases the way for further
merging later on.
Signed-off-by: 's avatarJesper Nilsson <jesper.nilsson@axis.com>
parent a939b96c
......@@ -70,7 +70,7 @@ SRC_ARCH = $(srctree)/arch/cris
# cris object files path
OBJ_ARCH = $(objtree)/arch/cris
boot := arch/cris/$(SARCH)/boot
boot := arch/cris/boot
MACHINE := arch/cris/$(SARCH)
all: zImage
......@@ -81,15 +81,15 @@ zImage Image: vmlinux
archprepare:
archclean:
$(Q)if [ -e arch/cris/$(SARCH)/boot ]; then \
$(MAKE) $(clean)=arch/cris/$(SARCH)/boot; \
$(Q)if [ -e arch/cris/boot ]; then \
$(MAKE) $(clean)=arch/cris/boot; \
fi
CLEAN_FILES += \
$(MACHINE)/boot/zImage \
$(MACHINE)/boot/compressed/decompress.bin \
$(MACHINE)/boot/compressed/piggy.gz \
$(MACHINE)/boot/rescue/rescue.bin
$(boot)/zImage \
$(boot)/compressed/decompress.bin \
$(boot)/compressed/piggy.gz \
$(boot)/rescue/rescue.bin
# MRPROPER_FILES +=
......
Creation of the self-extracting compressed kernel image (vmlinuz)
-----------------------------------------------------------------
$Id: README,v 1.1 2001/12/17 13:59:27 bjornw Exp $
This can be slightly confusing because it's a process with many steps.
The kernel object built by the arch/etrax100/Makefile, vmlinux, is split
by that makefile into text and data binary files, vmlinux.text and
vmlinux.data.
Those files together with a ROM filesystem can be catted together and
burned into a flash or executed directly at the DRAM origin.
They can also be catted together and compressed with gzip, which is what
happens in this makefile. Together they make up piggy.img.
The decompressor is built into the file decompress.o. It is turned into
the binary file decompress.bin, which is catted together with piggy.img
into the file vmlinuz. It can be executed in an arbitrary place in flash.
Be careful - it assumes some things about free locations in DRAM. It
assumes the DRAM starts at 0x40000000 and that it is at least 8 MB,
so it puts its code at 0x40700000, and initial stack at 0x40800000.
-Bjorn
/*
* misc.c
*
* This is a collection of several routines from gzip-1.0.3
* adapted for Linux.
*
* malloc by Hannu Savolainen 1993 and Matthias Urlichs 1994
* puts by Nick Holloway 1993, better puts by Martin Mares 1995
* adaptation for Linux/CRIS Axis Communications AB, 1999
*
*/
/* where the piggybacked kernel image expects itself to live.
* it is the same address we use when we network load an uncompressed
* image into DRAM, and it is the address the kernel is linked to live
* at by vmlinux.lds.S
*/
#define KERNEL_LOAD_ADR 0x40004000
#include <linux/types.h>
#include <arch/svinto.h>
/*
* gzip declarations
*/
#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))
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 */
unsigned inptr = 0; /* index of next byte to be processed in inbuf
* After decompression it will contain the
* compressed size, and head.S will read it.
*/
static unsigned outcnt = 0; /* 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() (inbuf[inptr++])
/* Diagnostic functions */
#ifdef DEBUG
# define Assert(cond, msg) do { \
if (!(cond)) \
error(msg); \
} while (0)
# define Trace(x) 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 Trace(x)
# define Tracev(x)
# define Tracevv(x)
# define Tracec(c, x)
# define Tracecv(c, x)
#endif
static void flush_window(void);
static void error(char *m);
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 puts(const char *);
/* the "heap" is put directly after the BSS ends, at end */
extern int _end;
static long free_mem_ptr = (long)&_end;
static long free_mem_end_ptr;
#include "../../../../../lib/inflate.c"
/* decompressor info and error messages to serial console */
static void
puts(const char *s)
{
#ifndef CONFIG_ETRAX_DEBUG_PORT_NULL
while (*s) {
#ifdef CONFIG_ETRAX_DEBUG_PORT0
while (!(*R_SERIAL0_STATUS & (1 << 5))) ;
*R_SERIAL0_TR_DATA = *s++;
#endif
#ifdef CONFIG_ETRAX_DEBUG_PORT1
while (!(*R_SERIAL1_STATUS & (1 << 5))) ;
*R_SERIAL1_TR_DATA = *s++;
#endif
#ifdef CONFIG_ETRAX_DEBUG_PORT2
while (!(*R_SERIAL2_STATUS & (1 << 5))) ;
*R_SERIAL2_TR_DATA = *s++;
#endif
#ifdef CONFIG_ETRAX_DEBUG_PORT3
while (!(*R_SERIAL3_STATUS & (1 << 5))) ;
*R_SERIAL3_TR_DATA = *s++;
#endif
}
#endif
}
void *memset(void *s, int c, size_t n)
{
int i;
char *ss = (char *)s;
for (i = 0; i < n; i++)
ss[i] = c;
return s;
}
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];
return __dest;
}
/* ===========================================================================
* Write the output window window[0..outcnt-1] and update crc and bytes_out.
* (Used for the decompressed data only.)
*/
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;
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)
{
puts("\n\n");
puts(x);
puts("\n\n -- System halted\n");
while (1); /* Halt */
}
void setup_normal_output_buffer(void)
{
output_data = (char *)KERNEL_LOAD_ADR;
}
void decompress_kernel(void)
{
char revision;
/* input_data is set in head.S */
inbuf = input_data;
#ifdef CONFIG_ETRAX_DEBUG_PORT0
*R_SERIAL0_XOFF = 0;
*R_SERIAL0_BAUD = 0x99;
*R_SERIAL0_TR_CTRL = 0x40;
#endif
#ifdef CONFIG_ETRAX_DEBUG_PORT1
*R_SERIAL1_XOFF = 0;
*R_SERIAL1_BAUD = 0x99;
*R_SERIAL1_TR_CTRL = 0x40;
#endif
#ifdef CONFIG_ETRAX_DEBUG_PORT2
*R_GEN_CONFIG = 0x08;
*R_SERIAL2_XOFF = 0;
*R_SERIAL2_BAUD = 0x99;
*R_SERIAL2_TR_CTRL = 0x40;
#endif
#ifdef CONFIG_ETRAX_DEBUG_PORT3
*R_GEN_CONFIG = 0x100;
*R_SERIAL3_XOFF = 0;
*R_SERIAL3_BAUD = 0x99;
*R_SERIAL3_TR_CTRL = 0x40;
#endif
setup_normal_output_buffer();
makecrc();
__asm__ volatile ("move $vr,%0" : "=rm" (revision));
if (revision < 10) {
puts("You need an ETRAX 100LX to run linux 2.6\n");
while (1);
}
puts("Uncompressing Linux...\n");
gunzip();
puts("Done. Now booting the kernel.\n");
}
#
# arch/cris/arch-v32/boot/Makefile
#
OBJCOPYFLAGS = -O binary -R .note -R .comment
subdir- := compressed rescue
targets := Image
$(obj)/Image: vmlinux FORCE
$(call if_changed,objcopy)
@echo ' Kernel: $@ is ready'
$(obj)/compressed/vmlinux: $(obj)/Image FORCE
$(Q)$(MAKE) $(build)=$(obj)/compressed $@
$(Q)$(MAKE) $(build)=$(obj)/rescue $(obj)/rescue/rescue.bin
$(obj)/zImage: $(obj)/compressed/vmlinux
@cp $< $@
@echo ' Kernel: $@ is ready'
#
# arch/cris/arch-v32/boot/compressed/Makefile
#
asflags-y += -I$(srctree)/include/asm/mach/ -I$(srctree)/include/asm/arch
ccflags-y += -O2 -I$(srctree)/include/asm/mach/ -I$(srctree)/include/asm/arch
ldflags-y += -T$(srctree)/$(src)/decompress.lds
OBJECTS = $(obj)/head.o $(obj)/misc.o
OBJCOPYFLAGS = -O binary --remove-section=.bss
quiet_cmd_image = BUILD $@
cmd_image = cat $(obj)/decompress.bin $(obj)/piggy.gz > $@
targets := vmlinux piggy.gz decompress.o decompress.bin
$(obj)/decompress.o: $(OBJECTS) FORCE
$(call if_changed,ld)
$(obj)/decompress.bin: $(obj)/decompress.o FORCE
$(call if_changed,objcopy)
$(obj)/vmlinux: $(obj)/piggy.gz $(obj)/decompress.bin FORCE
$(call if_changed,image)
$(obj)/piggy.gz: $(obj)/../Image FORCE
$(call if_changed,gzip)
#
# Makefile for rescue (bootstrap) code
#
CC = gcc-cris -mlinux -march=v32 $(LINUXINCLUDE)
ccflags-y += -O2 -I $(srctree)/include/asm/arch/mach/ \
-I $(srctree)/include/asm/arch
asflags-y += -I $(srctree)/include/asm/arch/mach/ -I $(srctree)/include/asm/arch
LD = gcc-cris -mlinux -march=v32 -nostdlib
ldflags-y += -T $(srctree)/$(src)/rescue.lds
LDPOSTFLAGS = -lgcc
OBJCOPYFLAGS = -O binary --remove-section=.bss
obj-$(CONFIG_ETRAX_AXISFLASHMAP) = head.o
OBJECT := $(obj)/head.o
targets := rescue.o rescue.bin
quiet_cmd_ldlibgcc = LD $@
cmd_ldlibgcc = $(LD) $(LDFLAGS) $(filter-out FORCE,$^) $(LDPOSTFLAGS) -o $@
$(obj)/rescue.o: $(OBJECTS) FORCE
$(call if_changed,ldlibgcc)
$(obj)/rescue.bin: $(obj)/rescue.o FORCE
$(call if_changed,objcopy)
cp -p $(obj)/rescue.bin $(objtree)
#
# arch/cris/arch-v10/boot/Makefile
# arch/cris/boot/Makefile
#
OBJCOPYFLAGS = -O binary --remove-section=.bss
objcopyflags-$(CONFIG_ETRAX_ARCH_V10) += -R .note -R .comment
objcopyflags-$(CONFIG_ETRAX_ARCH_V32) += --remove-section=.bss
OBJCOPYFLAGS = -O binary $(objcopyflags-y)
subdir- := compressed rescue
targets := Image
......
#
# arch/cris/arch-v10/boot/compressed/Makefile
# arch/cris/boot/compressed/Makefile
#
asflags-y += $(LINUXINCLUDE)
ccflags-y += -O2 $(LINUXINCLUDE)
ldflags-y += -T $(srctree)/$(src)/decompress.lds
OBJECTS = $(obj)/head.o $(obj)/misc.o
# asflags-$(CONFIG_ETRAX_ARCH_V32) += -I$(srctree)/include/asm/mach \
# -I$(srctree)/include/asm/arch
# ccflags-$(CONFIG_ETRAX_ARCH_V32) += -O2 -I$(srctree)/include/asm/mach
# -I$(srctree)/include/asm/arch
arch-$(CONFIG_ETRAX_ARCH_V10) = v10
arch-$(CONFIG_ETRAX_ARCH_V32) = v32
ldflags-y += -T $(srctree)/$(src)/decompress_$(arch-y).lds
OBJECTS-$(CONFIG_ETRAX_ARCH_V32) = $(obj)/head_v32.o
OBJECTS-$(CONFIG_ETRAX_ARCH_V10) = $(obj)/head_v10.o
OBJECTS= $(OBJECTS-y) $(obj)/misc.o
OBJCOPYFLAGS = -O binary --remove-section=.bss
quiet_cmd_image = BUILD $@
......@@ -24,4 +36,3 @@ $(obj)/vmlinux: $(obj)/piggy.gz $(obj)/decompress.bin FORCE
$(obj)/piggy.gz: $(obj)/../Image FORCE
$(call if_changed,gzip)
......@@ -30,7 +30,7 @@
beq dram_init_finished
nop
#include "../../lib/dram_init.S"
#include "../../arch-v10/lib/dram_init.S"
dram_init_finished:
......@@ -123,4 +123,4 @@ _cmd_line_magic:
.dword 0
_cmd_line_addr:
.dword 0
#include "../../lib/hw_settings.S"
#include "../../arch-v10/lib/hw_settings.S"
......@@ -17,7 +17,7 @@
.globl input_data
.text
_start:
start:
di
;; Start clocks for used blocks.
......@@ -29,9 +29,9 @@ _start:
nop
#if defined CONFIG_ETRAXFS
#include "../../mach-fs/dram_init.S"
#include "../../arch-v32/mach-fs/dram_init.S"
#elif defined CONFIG_CRIS_MACH_ARTPEC3
#include "../../mach-a3/dram_init.S"
#include "../../arch-v32/mach-a3/dram_init.S"
#else
#error Only ETRAXFS and ARTPEC-3 supported!
#endif
......@@ -137,9 +137,9 @@ _boot_source:
.dword 0
#if defined CONFIG_ETRAXFS
#include "../../mach-fs/hw_settings.S"
#include "../../arch-v32/mach-fs/hw_settings.S"
#elif defined CONFIG_CRIS_MACH_ARTPEC3
#include "../../mach-a3/hw_settings.S"
#include "../../arch-v32/mach-a3/hw_settings.S"
#else
#error Only ETRAXFS and ARTPEC-3 supported!
#endif
......@@ -18,8 +18,9 @@
#define KERNEL_LOAD_ADR 0x40004000
#include <linux/types.h>
#ifdef CONFIG_ETRAX_ARCH_V32
#include <hwregs/reg_rdwr.h>
#include <hwregs/reg_map.h>
#include <hwregs/ser_defs.h>
......@@ -27,6 +28,9 @@
#ifdef CONFIG_CRIS_MACH_ARTPEC3
#include <hwregs/clkgen_defs.h>
#endif
#else
#include <arch/svinto.h>
#endif
/*
* gzip declarations
......@@ -35,12 +39,10 @@
#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;
......@@ -68,27 +70,43 @@ 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 void flush_window(void);
static void error(char *m);
static void puts(const char *);
extern char *input_data; /* lives in head.S */
......@@ -96,10 +114,6 @@ static long bytes_out;
static uch *output_data;
static unsigned long output_ptr;
static void error(char *m);
static void puts(const char *);
/* the "heap" is put directly after the BSS ends, at end */
extern int _end;
......@@ -110,8 +124,8 @@ static long free_mem_end_ptr;
/* decompressor info and error messages to serial console */
static inline void
serout(const char *s, reg_scope_instances regi_ser)
#ifdef CONFIG_ETRAX_ARCH_V32
static inline void serout(const char *s, reg_scope_instances regi_ser)
{
reg_ser_rs_stat_din rs;
reg_ser_rw_dout dout = {.data = *s};
......@@ -123,23 +137,47 @@ serout(const char *s, reg_scope_instances regi_ser)
REG_WR(ser, regi_ser, rw_dout, dout);
}
#endif
static void
puts(const char *s)
static void puts(const char *s)
{
#ifndef CONFIG_ETRAX_DEBUG_PORT_NULL
while (*s) {
#ifdef CONFIG_ETRAX_DEBUG_PORT0
#ifdef CONFIG_ETRAX_ARCH_V32
serout(s, regi_ser0);
#else
while (!(*R_SERIAL0_STATUS & (1 << 5)))
;
*R_SERIAL0_TR_DATA = *s++;
#endif
#endif
#ifdef CONFIG_ETRAX_DEBUG_PORT1
#ifdef CONFIG_ETRAX_ARCH_V32
serout(s, regi_ser1);
#else
while (!(*R_SERIAL1_STATUS & (1 << 5)))
;
*R_SERIAL1_TR_DATA = *s++;
#endif
#endif
#ifdef CONFIG_ETRAX_DEBUG_PORT2
#ifdef CONFIG_ETRAX_ARCH_V32
serout(s, regi_ser2);
#else
while (!(*R_SERIAL2_STATUS & (1 << 5)))
;
*R_SERIAL2_TR_DATA = *s++;
#endif
#endif
#ifdef CONFIG_ETRAX_DEBUG_PORT3
#ifdef CONFIG_ETRAX_ARCH_V32
serout(s, regi_ser3);
#else
while (!(*R_SERIAL3_STATUS & (1 << 5)))
;
*R_SERIAL3_TR_DATA = *s++;
#endif
#endif
*s++;
}
......@@ -147,8 +185,7 @@ puts(const char *s)
#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;
......@@ -158,14 +195,13 @@ memset(void* s, int c, size_t n)
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;
}
......@@ -175,43 +211,42 @@ 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("\r\n\n");
puts("\n\n");
puts(x);
puts("\r\n\n -- System halted\n");
puts("\n\n -- System halted\n");
while(1); /* Halt */
}
void
setup_normal_output_buffer(void)
void setup_normal_output_buffer(void)
{
output_data = (char *)KERNEL_LOAD_ADR;
}
static inline void
serial_setup(reg_scope_instances regi_ser)
#ifdef CONFIG_ETRAX_ARCH_V32
static inline void serial_setup(reg_scope_instances regi_ser)
{
reg_ser_rw_xoff xoff;
reg_ser_rw_tr_ctrl tr_ctrl;
......@@ -252,12 +287,16 @@ serial_setup(reg_scope_instances regi_ser)
REG_WR(ser, regi_ser, rw_rec_ctrl, rec_ctrl);
REG_WR(ser, regi_ser, rw_rec_baud_div, rec_baud);
}
#endif
void