Entry point is now configurable via a Makefile variable. Entry point is detected automatically (Gabor Juhos)
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@6841 3c298f89-4303-0410-b956-a3cf2f4a3e73master
Florian Fainelli
parent
5218d952cd
commit
75af0330e0
|
|
@ -1,4 +1,4 @@
|
|||
#
|
||||
#
|
||||
# Copyright (C) 2006 OpenWrt.org
|
||||
#
|
||||
# This is free software, licensed under the GNU General Public License v2.
|
||||
|
|
@ -8,6 +8,9 @@
|
|||
|
||||
include $(TOPDIR)/rules.mk
|
||||
|
||||
LOADER := loader
|
||||
BZ_STARTUP_ORG := 0
|
||||
|
||||
PKG_NAME := lzma-loader
|
||||
PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
|
||||
|
||||
|
|
@ -16,18 +19,19 @@ $(PKG_BUILD_DIR)/.prepared:
|
|||
$(CP) ./src/* $(PKG_BUILD_DIR)/
|
||||
touch $@
|
||||
|
||||
$(PKG_BUILD_DIR)/loader.gz: $(PKG_BUILD_DIR)/.prepared
|
||||
$(PKG_BUILD_DIR)/$(LOADER).gz: $(PKG_BUILD_DIR)/.prepared
|
||||
$(MAKE) -C $(PKG_BUILD_DIR) CC="$(TARGET_CC)" \
|
||||
LD="$(TARGET_CROSS)ld" CROSS_COMPILE="$(TARGET_CROSS)"
|
||||
LD="$(TARGET_CROSS)ld" CROSS_COMPILE="$(TARGET_CROSS)" \
|
||||
LOADER=$(LOADER) BZ_STARTUP_ORG=$(BZ_STARTUP_ORG)
|
||||
|
||||
download:
|
||||
download:
|
||||
prepare: $(PKG_BUILD_DIR)/.prepared
|
||||
compile: $(PKG_BUILD_DIR)/loader.gz
|
||||
compile: $(PKG_BUILD_DIR)/$(LOADER).gz
|
||||
install:
|
||||
|
||||
ifneq ($(TARGET),)
|
||||
install: compile
|
||||
$(CP) $(PKG_BUILD_DIR)/loader.gz $(PKG_BUILD_DIR)/loader.elf $(TARGET)/
|
||||
$(CP) $(PKG_BUILD_DIR)/$(LOADER).gz $(PKG_BUILD_DIR)/$(LOADER).elf $(TARGET)/
|
||||
endif
|
||||
|
||||
clean:
|
||||
|
|
|
|||
|
|
@ -3,7 +3,7 @@
|
|||
#
|
||||
# Copyright 2001-2003, Broadcom Corporation
|
||||
# All Rights Reserved.
|
||||
#
|
||||
#
|
||||
# THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
|
||||
# KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
|
||||
# SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
|
||||
|
|
@ -16,9 +16,15 @@
|
|||
# Copyright 2005 Oleg I. Vdovikin <oleg@cs.msu.su>
|
||||
# Cleaned up, modified for lzma support, removed from kernel
|
||||
#
|
||||
# Copyright 2007 Gabor Juhos <juhosg@freemail.hu>
|
||||
# Modified to support user defined entry point address.
|
||||
# Added support for make targets with different names
|
||||
#
|
||||
|
||||
TEXT_START := 0x80001000
|
||||
LOADADDR := 0x80001000
|
||||
BZ_TEXT_START := 0x80300000
|
||||
BZ_STARTUP_ORG := 0
|
||||
LOADER := loader
|
||||
|
||||
OBJCOPY := $(CROSS_COMPILE)objcopy -O binary -R .reginfo -R .note -R .comment -R .mdebug -S
|
||||
|
||||
|
|
@ -26,52 +32,41 @@ CFLAGS = -D__KERNEL__ -Wall -Wstrict-prototypes -Wno-trigraphs -Os \
|
|||
-fno-strict-aliasing -fno-common -fomit-frame-pointer -G 0 -mno-abicalls -fno-pic \
|
||||
-ffunction-sections -pipe -mlong-calls -fno-common \
|
||||
-mabi=32 -march=mips32 -Wa,-32 -Wa,-march=mips32 -Wa,-mips32 -Wa,--trap
|
||||
CFLAGS += -DLOADADDR=$(TEXT_START) -D_LZMA_IN_CB
|
||||
CFLAGS += -DLOADADDR=$(LOADADDR) -D_LZMA_IN_CB
|
||||
|
||||
ASFLAGS = $(CFLAGS) -D__ASSEMBLY__ -DBZ_TEXT_START=$(BZ_TEXT_START)
|
||||
ASFLAGS = $(CFLAGS) -D__ASSEMBLY__ -DBZ_STARTUP_ORG=$(BZ_STARTUP_ORG)
|
||||
|
||||
SEDFLAGS := s/BZ_TEXT_START/$(BZ_TEXT_START)/;s/TEXT_START/$(TEXT_START)/
|
||||
LDFLAGS = -static --gc-sections -no-warn-mismatch
|
||||
LDFLAGS += -e startup -Ttext $(BZ_TEXT_START) -T loader.lds.in
|
||||
|
||||
OBJECTS := head.o data.o
|
||||
OBJECTS := $(LOADER)-head.o decompress.o LzmaDecode.o
|
||||
|
||||
all: loader.gz loader.elf
|
||||
all: $(LOADER).gz $(LOADER).elf
|
||||
|
||||
# Don't build dependencies, this may die if $(CC) isn't gcc
|
||||
dep:
|
||||
|
||||
install:
|
||||
|
||||
loader.gz: loader
|
||||
decompress.o:
|
||||
$(CC) $(CFLAGS) -c decompress.c -o $@
|
||||
|
||||
$(LOADER)-head.o:
|
||||
$(CC) $(ASFLAGS) -c head.S -o $@
|
||||
|
||||
$(LOADER).gz: $(LOADER).bin
|
||||
gzip -nc9 $< > $@
|
||||
|
||||
loader.elf: loader.o
|
||||
$(LOADER).elf: $(LOADER).o
|
||||
cp $< $@
|
||||
|
||||
loader: loader.o
|
||||
$(OBJCOPY) $< $@
|
||||
$(LOADER).bin: $(LOADER).o
|
||||
$(OBJCOPY) -O binary $< $@
|
||||
|
||||
loader.o: loader.lds $(OBJECTS)
|
||||
$(LD) -static --gc-sections -no-warn-mismatch -T loader.lds -o $@ $(OBJECTS)
|
||||
|
||||
loader.lds: loader.lds.in Makefile
|
||||
@sed "$(SEDFLAGS)" < $< > $@
|
||||
|
||||
data.o: data.lds decompress.image
|
||||
$(LD) -no-warn-mismatch -T data.lds -r -o $@ -b binary decompress.image -b elf32-tradlittlemips
|
||||
|
||||
data.lds:
|
||||
@echo "SECTIONS { .data : { code_start = .; *(.data) code_stop = .; }}" > $@
|
||||
|
||||
decompress.image: decompress
|
||||
$(OBJCOPY) $< $@
|
||||
|
||||
decompress: decompress.lds decompress.o LzmaDecode.o
|
||||
$(LD) -static --gc-sections -no-warn-mismatch -T decompress.lds -o $@ decompress.o LzmaDecode.o
|
||||
|
||||
decompress.lds: decompress.lds.in Makefile
|
||||
@sed "$(SEDFLAGS)" < $< > $@
|
||||
$(LOADER).o: $(OBJECTS)
|
||||
$(LD) $(LDFLAGS) -o $@ $(OBJECTS)
|
||||
|
||||
mrproper: clean
|
||||
|
||||
clean:
|
||||
rm -f loader.gz loader decompress *.lds *.o *.image
|
||||
rm -f *.gz *.elf *.bin *.o
|
||||
|
|
|
|||
|
|
@ -109,10 +109,10 @@ static int read_byte(void *object, unsigned char **buffer, UInt32 *bufferSize)
|
|||
val = *(unsigned int *)data;
|
||||
data += 4;
|
||||
}
|
||||
|
||||
|
||||
*bufferSize = 1;
|
||||
*buffer = ((unsigned char *)&val) + (offset++ & 3);
|
||||
|
||||
|
||||
return LZMA_RESULT_OK;
|
||||
}
|
||||
|
||||
|
|
@ -120,14 +120,16 @@ static __inline__ unsigned char get_byte(void)
|
|||
{
|
||||
unsigned char *buffer;
|
||||
UInt32 fake;
|
||||
|
||||
|
||||
return read_byte(0, &buffer, &fake), *buffer;
|
||||
}
|
||||
|
||||
int uart_write_str(char * str);
|
||||
|
||||
/* should be the first function */
|
||||
void entry(unsigned long reg_a0, unsigned long reg_a1,
|
||||
void decompress_entry(unsigned long reg_a0, unsigned long reg_a1,
|
||||
unsigned long reg_a2, unsigned long reg_a3,
|
||||
unsigned long icache_size, unsigned long icache_lsize,
|
||||
unsigned long icache_size, unsigned long icache_lsize,
|
||||
unsigned long dcache_size, unsigned long dcache_lsize)
|
||||
{
|
||||
unsigned int i; /* temp value */
|
||||
|
|
@ -140,13 +142,13 @@ void entry(unsigned long reg_a0, unsigned long reg_a1,
|
|||
callback.Read = read_byte;
|
||||
|
||||
uart_write_str("decompress kernel ... ");
|
||||
|
||||
|
||||
/* look for trx header, 32-bit data access */
|
||||
for (data = ((unsigned char *) KSEG1ADDR(BCM4710_FLASH));
|
||||
((struct trx_header *)data)->magic != TRX_MAGIC; data += 65536);
|
||||
|
||||
/* compressed kernel is in the partition 0 or 1 */
|
||||
if (((struct trx_header *)data)->offsets[1] > 65536)
|
||||
if (((struct trx_header *)data)->offsets[1] > 65536)
|
||||
data += ((struct trx_header *)data)->offsets[0];
|
||||
else
|
||||
data += ((struct trx_header *)data)->offsets[1];
|
||||
|
|
@ -169,7 +171,7 @@ void entry(unsigned long reg_a0, unsigned long reg_a1,
|
|||
((unsigned int)get_byte() << 24);
|
||||
|
||||
/* skip rest of the header (upper half of uncompressed size) */
|
||||
for (i = 0; i < 4; i++)
|
||||
for (i = 0; i < 4; i++)
|
||||
get_byte();
|
||||
|
||||
/* decompress kernel */
|
||||
|
|
@ -188,11 +190,11 @@ void entry(unsigned long reg_a0, unsigned long reg_a1,
|
|||
}
|
||||
|
||||
/* *********************************************************************
|
||||
*
|
||||
*
|
||||
* ADM5120 UART driver File: dev_adm_uart.c
|
||||
*
|
||||
*
|
||||
* This is a console device driver for an ADM5120 UART
|
||||
*
|
||||
*
|
||||
*********************************************************************
|
||||
*
|
||||
* Copyright 2006
|
||||
|
|
@ -226,7 +228,7 @@ int uart_write_hex(int val)
|
|||
{
|
||||
int i;
|
||||
int tmp;
|
||||
|
||||
|
||||
uart_write_str("0x");
|
||||
for ( i=0 ; i<8 ; i++ ) {
|
||||
tmp = (val >> ((7-i) * 4 )) & 0xf;
|
||||
|
|
|
|||
|
|
@ -1,20 +0,0 @@
|
|||
OUTPUT_ARCH(mips)
|
||||
ENTRY(entry)
|
||||
SECTIONS {
|
||||
. = BZ_TEXT_START;
|
||||
.text : {
|
||||
*(.text.entry)
|
||||
*(.text)
|
||||
*(.rodata)
|
||||
}
|
||||
|
||||
.data : {
|
||||
*(.data)
|
||||
}
|
||||
|
||||
.bss : {
|
||||
*(.bss)
|
||||
}
|
||||
|
||||
workspace = .;
|
||||
}
|
||||
|
|
@ -1,6 +1,6 @@
|
|||
/* Copyright 2007 Gabor Juhos */
|
||||
/* Copyright 2007 Gabor Juhos <juhosg@freemail.hu> */
|
||||
/* keep original values of the a0,a1,a2,a3 registers */
|
||||
/* cache manipulation adapted from Broadcom code */
|
||||
/* modifed to support user defined entry point address */
|
||||
/* Copyright 2005 Oleg I. Vdovikin (oleg@cs.msu.su) */
|
||||
/* cache manipulation adapted from Broadcom code */
|
||||
/* idea taken from original bunzip2 decompressor code */
|
||||
|
|
@ -39,21 +39,44 @@
|
|||
#define Index_Writeback_Inv_D 0x01
|
||||
|
||||
.text
|
||||
LEAF(startup)
|
||||
.set noreorder
|
||||
|
||||
/* Copy decompressor code to the right place */
|
||||
li t0, BZ_TEXT_START
|
||||
|
||||
la t1, code_start
|
||||
la t2, code_stop
|
||||
$L1:
|
||||
lw t3, 0(t1)
|
||||
sw t3, 0(t0)
|
||||
#if (BZ_STARTUP_ORG)
|
||||
.set noreorder
|
||||
|
||||
b startup
|
||||
nop
|
||||
|
||||
.org BZ_STARTUP_ORG
|
||||
#endif
|
||||
|
||||
LEAF(startup)
|
||||
.set noreorder
|
||||
|
||||
move t1, ra # save return address
|
||||
la t0, __reloc_label # get linked address of label
|
||||
bal __reloc_label # branch and link to label to
|
||||
nop # get actual address
|
||||
__reloc_label:
|
||||
subu t0, ra, t0 # get reloc_delta
|
||||
move ra, t1 # restore return address
|
||||
|
||||
beqz t0, __reloc_end # if delta is 0 we are in the right place
|
||||
nop
|
||||
|
||||
/* Copy our code to the right place */
|
||||
la t1, _code_start # get linked address of _code_start
|
||||
la t2, _code_end # get linked address of _code_end
|
||||
addu t0, t0, t1 # calculate actual address of _code_start
|
||||
|
||||
__reloc_copy:
|
||||
lw t3, 0(t0)
|
||||
sw t3, 0(t1)
|
||||
add t1, 4
|
||||
blt t1, t2, $L1
|
||||
blt t1, t2, __reloc_copy
|
||||
add t0, 4
|
||||
|
||||
__reloc_end:
|
||||
|
||||
/* At this point we need to invalidate dcache and */
|
||||
/* icache before jumping to new code */
|
||||
|
||||
|
|
@ -100,10 +123,10 @@ $L1:
|
|||
.set mips0
|
||||
bne t0,t1,1b
|
||||
addu t0,s1
|
||||
|
||||
|
||||
nodc:
|
||||
/* Now we get to do it all again for the I$ */
|
||||
|
||||
|
||||
move s3,zero /* just in case there is no icache */
|
||||
move s4,zero
|
||||
|
||||
|
|
@ -147,20 +170,25 @@ nodc:
|
|||
addu t0,s3
|
||||
|
||||
noic:
|
||||
li t0, BZ_TEXT_START
|
||||
|
||||
/* Setup new "C" stack */
|
||||
la sp, _stack
|
||||
|
||||
addiu sp, -32 /* reserve stack for parameters */
|
||||
#if 0
|
||||
#if 0
|
||||
sw a0, 0(sp)
|
||||
sw a1, 4(sp)
|
||||
sw a2, 8(sp)
|
||||
sw a3, 12(sp)
|
||||
#endif
|
||||
#endif
|
||||
sw s3, 16(sp) /* icache line size */
|
||||
sw s4, 20(sp) /* icache size */
|
||||
sw s1, 24(sp) /* dcache line size */
|
||||
jr t0
|
||||
sw s2, 28(sp) /* dcache size */
|
||||
|
||||
|
||||
/* jump to the decompressor routine */
|
||||
la t0, decompress_entry
|
||||
jr t0
|
||||
nop
|
||||
|
||||
.set reorder
|
||||
END(startup)
|
||||
END(startup)
|
||||
|
|
|
|||
|
|
@ -1,17 +1,27 @@
|
|||
OUTPUT_ARCH(mips)
|
||||
ENTRY(startup)
|
||||
SECTIONS {
|
||||
. = TEXT_START;
|
||||
.text : {
|
||||
_code_start = .;
|
||||
*(.text)
|
||||
*(.text.*)
|
||||
*(.rodata)
|
||||
*(.rodata.*)
|
||||
_code_end = .;
|
||||
}
|
||||
|
||||
.data : {
|
||||
*(.data)
|
||||
*(.data.*)
|
||||
}
|
||||
|
||||
.bss : {
|
||||
*(.bss)
|
||||
*(.bss.*)
|
||||
}
|
||||
|
||||
. = ALIGN(16);
|
||||
. = . + 8192;
|
||||
_stack = .;
|
||||
|
||||
workspace = .;
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue