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authorflorian <florian@3c298f89-4303-0410-b956-a3cf2f4a3e73>2007-05-30 10:35:27 +0000
committerflorian <florian@3c298f89-4303-0410-b956-a3cf2f4a3e73>2007-05-30 10:35:27 +0000
commit12603cc0fbbfd50d11d764c2f91c3ae182a20d65 (patch)
treef01887d4e90bb875edb7b4effcbf283c4861090d /target
parenta0dcd51d4e4e43a29e08674cfacec0ca8117cf3a (diff)
Add board specific code, autodetect the kernel, fixes #1707, thanks Gabor Juhos
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@7398 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target')
-rw-r--r--target/linux/adm5120-2.6/image/lzma-loader/Makefile44
-rw-r--r--target/linux/adm5120-2.6/image/lzma-loader/src/Makefile56
-rw-r--r--target/linux/adm5120-2.6/image/lzma-loader/src/board.c184
-rw-r--r--target/linux/adm5120-2.6/image/lzma-loader/src/decompress.c228
-rw-r--r--target/linux/adm5120-2.6/image/lzma-loader/src/head.S19
-rw-r--r--target/linux/adm5120-2.6/image/lzma-loader/src/loader.lds27
-rw-r--r--target/linux/adm5120-2.6/image/lzma-loader/src/loader.lds.in27
-rw-r--r--target/linux/adm5120-2.6/image/lzma-loader/src/lzma-data.lds9
8 files changed, 445 insertions, 149 deletions
diff --git a/target/linux/adm5120-2.6/image/lzma-loader/Makefile b/target/linux/adm5120-2.6/image/lzma-loader/Makefile
index 175a1845c..34a1a469e 100644
--- a/target/linux/adm5120-2.6/image/lzma-loader/Makefile
+++ b/target/linux/adm5120-2.6/image/lzma-loader/Makefile
@@ -8,31 +8,49 @@
include $(TOPDIR)/rules.mk
-LOADER := loader
-BZ_STARTUP_ORG := 0
+LOADER := adm5120
+LOADER_NAME := loader-$(LOADER)
+LOADER_DATA :=
+
+LOADER_BIN := $(KDIR)/$(LOADER_NAME).bin
+LOADER_GZ := $(KDIR)/$(LOADER_NAME).gz
+LOADER_ELF := $(KDIR)/$(LOADER_NAME).elf
+
+LZMA_STARTUP_ORG:= 0
+LZMA_TEXT_START := 0x80300000
PKG_NAME := lzma-loader
-PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
+PKG_BUILD_DIR := $(KDIR)/$(PKG_NAME)
+
+.PHONY : loader-compile
$(PKG_BUILD_DIR)/.prepared:
mkdir $(PKG_BUILD_DIR)
$(CP) ./src/* $(PKG_BUILD_DIR)/
touch $@
-$(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)" \
- LOADER=$(LOADER) BZ_STARTUP_ORG=$(BZ_STARTUP_ORG)
+loader-compile: $(PKG_BUILD_DIR)/.prepared
+ $(MAKE) -C $(PKG_BUILD_DIR) CROSS_COMPILE="$(TARGET_CROSS)" \
+ LZMA_STARTUP_ORG=$(LZMA_STARTUP_ORG) \
+ LZMA_TEXT_START=$(LZMA_TEXT_START) \
+ LOADER_DATA=$(LOADER_DATA) \
+ clean all
+
+$(LOADER_GZ): $(PKG_BUILD_DIR)/loader.bin
+ gzip -nc9 $< > $@
+
+$(LOADER_ELF) : $(PKG_BUILD_DIR)/loader.elf
+ $(CP) $< $@
+
+$(LOADER_BIN) : $(PKG_BUILD_DIR)/loader.bin
+ $(CP) $< $@
download:
prepare: $(PKG_BUILD_DIR)/.prepared
-compile: $(PKG_BUILD_DIR)/$(LOADER).gz
-install:
+compile: loader-compile $(LOADER_BIN) $(LOADER_GZ) $(LOADER_ELF)
-ifneq ($(TARGET),)
-install: compile
- $(CP) $(PKG_BUILD_DIR)/$(LOADER).gz $(PKG_BUILD_DIR)/$(LOADER).elf $(PKG_BUILD_DIR)/$(LOADER).bin $(TARGET)/
-endif
+install:
clean:
rm -rf $(PKG_BUILD_DIR)
+ rm -f $(KDIR)/loader-*.gz $(KDIR)/loader-*.elf $(KDIR)/loader-*.bin
diff --git a/target/linux/adm5120-2.6/image/lzma-loader/src/Makefile b/target/linux/adm5120-2.6/image/lzma-loader/src/Makefile
index e94be307d..0f4ffa63a 100644
--- a/target/linux/adm5120-2.6/image/lzma-loader/src/Makefile
+++ b/target/linux/adm5120-2.6/image/lzma-loader/src/Makefile
@@ -22,51 +22,65 @@
#
LOADADDR := 0x80001000
-BZ_TEXT_START := 0x80300000
-BZ_STARTUP_ORG := 0
-LOADER := loader
+LZMA_TEXT_START := 0x80500000
+LZMA_STARTUP_ORG:= 0
+LOADER_DATA :=
-OBJCOPY := $(CROSS_COMPILE)objcopy -O binary -R .reginfo -R .note -R .comment -R .mdebug -S
+CC := $(CROSS_COMPILE)gcc
+LD := $(CROSS_COMPILE)ld
+OBJCOPY := $(CROSS_COMPILE)objcopy
+OBJDUMP := $(CROSS_COMPILE)objdump
+
+BIN_FLAGS := -O binary -R .reginfo -R .note -R .comment -R .mdebug -S
CFLAGS = -D__KERNEL__ -Wall -Wstrict-prototypes -Wno-trigraphs -Os \
-fno-strict-aliasing -fno-common -fomit-frame-pointer -G 0 -mno-abicalls -fno-pic \
-ffunction-sections -pipe -mlong-calls -fno-common \
-mabi=32 -march=mips32 -Wa,-32 -Wa,-march=mips32 -Wa,-mips32 -Wa,--trap
-CFLAGS += -DLOADADDR=$(LOADADDR) -D_LZMA_IN_CB
+CFLAGS += -DLOADADDR=$(LOADADDR)
-ASFLAGS = $(CFLAGS) -D__ASSEMBLY__ -DBZ_STARTUP_ORG=$(BZ_STARTUP_ORG)
+ASFLAGS = $(CFLAGS) -D__ASSEMBLY__ -DLZMA_STARTUP_ORG=$(LZMA_STARTUP_ORG)
LDFLAGS = -static --gc-sections -no-warn-mismatch
-LDFLAGS += -e startup -Ttext $(BZ_TEXT_START) -T loader.lds.in
+LDFLAGS += -e startup -T loader.lds -Ttext $(LZMA_TEXT_START)
+
+O_FORMAT = $(shell $(OBJDUMP) -i | head -2 | grep elf32)
-OBJECTS := $(LOADER)-head.o decompress.o LzmaDecode.o
+OBJECTS := head.o decompress.o board.o LzmaDecode.o
-all: $(LOADER).gz $(LOADER).elf
+ifneq ($(strip $(LOADER_DATA)),)
+OBJECTS += data.o
+CFLAGS += -DLZMA_WRAPPER=1
+else
+CFLAGS += -D_LZMA_IN_CB
+endif
+
+all: loader.bin
# Don't build dependencies, this may die if $(CC) isn't gcc
dep:
install:
-decompress.o:
- $(CC) $(CFLAGS) -c decompress.c -o $@
-
-$(LOADER)-head.o:
- $(CC) $(ASFLAGS) -c head.S -o $@
+%.o : %.c
+ $(CC) $(CFLAGS) -c -o $@ $<
-$(LOADER).gz: $(LOADER).bin
- gzip -nc9 $< > $@
+%.o : %.S
+ $(CC) $(ASFLAGS) -c -o $@ $<
-$(LOADER).elf: $(LOADER).o
- cp $< $@
+data.o: $(LOADER_DATA)
+ $(LD) -r -b binary --oformat $(O_FORMAT) -T lzma-data.lds -o $@ $<
-$(LOADER).bin: $(LOADER).o
- $(OBJCOPY) -O binary $< $@
+loader.bin: loader.elf
+ $(OBJCOPY) $(BIN_FLAGS) $< $@
-$(LOADER).o: $(OBJECTS)
+loader.elf: $(OBJECTS)
$(LD) $(LDFLAGS) -o $@ $(OBJECTS)
mrproper: clean
clean:
rm -f *.gz *.elf *.bin *.o
+
+
+
diff --git a/target/linux/adm5120-2.6/image/lzma-loader/src/board.c b/target/linux/adm5120-2.6/image/lzma-loader/src/board.c
new file mode 100644
index 000000000..616e7562a
--- /dev/null
+++ b/target/linux/adm5120-2.6/image/lzma-loader/src/board.c
@@ -0,0 +1,184 @@
+/*
+ * ADM5120 specific board support for LZMA decompressor
+ *
+ * Copyright (C) 2007 OpenWrt.org
+ * Copyright (C) 2007 Gabor Juhos <juhosg@freemail.hu>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <stddef.h>
+
+#define READREG(r) *(volatile unsigned int *)(r)
+#define WRITEREG(r,v) *(volatile unsigned int *)(r) = v
+
+/*
+ * INTC definitions
+ */
+#define INTC_BASE 0xB2200000
+
+/* INTC registers */
+#define INTC_REG_IRQ_DISABLE 0x0C
+
+/*
+ * UART definitions
+ */
+#define UART_BASE 0xB2600000
+/* UART registers */
+#define UART_REG_DATA 0x00 /* Data register */
+#define UART_REG_ECR 0x04 /* Error Clear register */
+#define UART_REG_LCRH 0x08 /* Line Control High register */
+#define UART_REG_LCRM 0x0C /* Line Control Middle register */
+#define UART_REG_LCRL 0x10 /* Line Control Low register */
+#define UART_REG_CTRL 0x14 /* Control register */
+#define UART_REG_FLAG 0x18 /* Flag register */
+
+/* Control register bits */
+#define UART_CTRL_EN ( 1 << 0 ) /* UART enable */
+
+/* Line Control High register bits */
+#define UART_LCRH_FEN ( 1 << 4 ) /* FIFO enable */
+
+/* Flag register bits */
+#define UART_FLAG_CTS ( 1 << 0 )
+#define UART_FLAG_DSR ( 1 << 1 )
+#define UART_FLAG_DCD ( 1 << 2 )
+#define UART_FLAG_BUSY ( 1 << 3 )
+#define UART_FLAG_RXFE ( 1 << 4 ) /* RX FIFO empty */
+#define UART_FLAG_TXFF ( 1 << 5 ) /* TX FIFO full */
+#define UART_FLAG_RXFF ( 1 << 6 ) /* RX FIFO full */
+#define UART_FLAG_TXFE ( 1 << 7 ) /* TX FIFO empty */
+
+/*
+ * SWITCH definitions
+ */
+#define SWITCH_BASE 0xB2000000
+
+#define SWITCH_REG_CPUP_CONF 0x0024
+#define SWITCH_REG_PORT_CONF0 0x0028
+
+#define SWITCH_REG_GPIO_CONF0 0x00B8
+#define SWITCH_REG_GPIO_CONF2 0x00BC
+
+#define SWITCH_REG_PORT0_LED 0x0100
+#define SWITCH_REG_PORT1_LED 0x0104
+#define SWITCH_REG_PORT2_LED 0x0108
+#define SWITCH_REG_PORT3_LED 0x010C
+#define SWITCH_REG_PORT4_LED 0x0110
+
+#define SWITCH_PORTS_HW 0x3F /* Hardware Ports */
+
+/* CPUP_CONF register bits */
+#define CPUP_CONF_DCPUP ( 1 << 0 ) /* Disable CPU port */
+
+/* PORT_CONF0 register bits */
+#define PORT_CONF0_DP_SHIFT 0 /* disable port shift*/
+
+
+/*
+ * UART routines
+ */
+
+#define UART_READ(r) READREG(UART_BASE+(r))
+#define UART_WRITE(r,v) WRITEREG(UART_BASE+(r),(v))
+
+static void uart_init(void)
+{
+ unsigned int t;
+
+ /* disable uart */
+ UART_WRITE(UART_REG_CTRL, 0);
+
+ /* keep current baud rate */
+ t = UART_READ(UART_REG_LCRM);
+ UART_WRITE(UART_REG_LCRM, t);
+ t = UART_READ(UART_REG_LCRL);
+ UART_WRITE(UART_REG_LCRL, t);
+
+ /* keep data, stop, and parity bits, but disable FIFO */
+ t = UART_READ(UART_REG_LCRH);
+ t &= ~(UART_LCRH_FEN);
+ UART_WRITE(UART_REG_LCRH, t );
+
+ /* clear error bits */
+ UART_WRITE(UART_REG_ECR, 0xFF);
+
+ /* enable uart, and disable interrupts */
+ UART_WRITE(UART_REG_CTRL, UART_CTRL_EN);
+}
+
+static void uart_putc(int ch)
+{
+ while ((UART_READ(UART_REG_FLAG) & UART_FLAG_TXFE) == 0);
+
+ UART_WRITE(UART_REG_DATA, ch);
+
+ while ((UART_READ(UART_REG_FLAG) & UART_FLAG_TXFF) != 0);
+}
+
+/*
+ * INTC routines
+ */
+
+#define INTC_READ(r) READREG(INTC_BASE+(r))
+#define INTC_WRITE(r,v) WRITEREG(INTC_BASE+(r),v)
+
+static void intc_init(void)
+{
+ INTC_WRITE(INTC_REG_IRQ_DISABLE, 0xFFFFFFFF);
+}
+
+/*
+ * SWITCH routines
+ */
+
+#define SWITCH_READ(r) READREG(SWITCH_BASE+(r))
+#define SWITCH_WRITE(r,v) WRITEREG(SWITCH_BASE+(r),v)
+
+static void switch_init(void)
+{
+ /* disable PHYS ports */
+ SWITCH_WRITE(SWITCH_REG_PORT_CONF0,
+ (SWITCH_PORTS_HW << PORT_CONF0_DP_SHIFT));
+
+ /* disable CPU port */
+ SWITCH_WRITE(SWITCH_REG_CPUP_CONF, CPUP_CONF_DCPUP);
+
+ /* disable GPIO lines */
+ SWITCH_WRITE(SWITCH_REG_GPIO_CONF0, 0);
+ SWITCH_WRITE(SWITCH_REG_GPIO_CONF2, 0);
+
+ /* disable LED lines */
+ SWITCH_WRITE(SWITCH_REG_PORT0_LED, 0);
+ SWITCH_WRITE(SWITCH_REG_PORT1_LED, 0);
+ SWITCH_WRITE(SWITCH_REG_PORT2_LED, 0);
+ SWITCH_WRITE(SWITCH_REG_PORT3_LED, 0);
+ SWITCH_WRITE(SWITCH_REG_PORT4_LED, 0);
+}
+
+/*
+ * routines needed by decompress.c
+ */
+void board_putc(int ch)
+{
+ uart_putc(ch);
+}
+
+void board_init(void)
+{
+ intc_init();
+ switch_init();
+ uart_init();
+}
diff --git a/target/linux/adm5120-2.6/image/lzma-loader/src/decompress.c b/target/linux/adm5120-2.6/image/lzma-loader/src/decompress.c
index ec63ccb65..f867e20dc 100644
--- a/target/linux/adm5120-2.6/image/lzma-loader/src/decompress.c
+++ b/target/linux/adm5120-2.6/image/lzma-loader/src/decompress.c
@@ -1,7 +1,8 @@
/*
- * LZMA compressed kernel decompressor for bcm947xx boards
+ * LZMA compressed kernel decompressor for ADM5120 boards
*
* Copyright (C) 2005 by Oleg I. Vdovikin <oleg@cs.msu.su>
+ * Copyright (C) 2007 OpenWrt.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -33,11 +34,18 @@
* 24-Mar-2007 Gabor Juhos
* pass original values of the a0,a1,a2,a3 registers to the kernel
*
+ * 19-May-2007 Gabor Juhos
+ * endiannes related cleanups
+ * add support for decompressing an embedded kernel
+ *
*/
+#include <stddef.h>
+
#include "LzmaDecode.h"
-#define BCM4710_FLASH 0x1fc00000 /* Flash */
+#define ADM5120_FLASH_START 0x1fc00000 /* Flash start */
+#define ADM5120_FLASH_END 0x1fe00000 /* Flash end */
#define KSEG0 0x80000000
#define KSEG1 0xa0000000
@@ -54,7 +62,7 @@
"cache %1, (%0);\n" \
".set mips0;\n" \
".set reorder\n" \
- : \
+ : \
: "r" (base), \
"i" (op));
@@ -81,6 +89,7 @@ static __inline__ void blast_dcache(unsigned long size, unsigned long lsize)
}
#define TRX_MAGIC 0x30524448 /* "HDR0" */
+#define TRX_ALIGN 0x1000
struct trx_header {
unsigned int magic; /* "HDR0" */
@@ -92,26 +101,24 @@ struct trx_header {
/* beyound the image end, size not known in advance */
extern unsigned char workspace[];
+#if LZMA_WRAPPER
+extern unsigned char _lzma_data_start[];
+extern unsigned char _lzma_data_end[];
+#endif
+
+extern void board_init(void);
+extern void board_putc(int ch);
-unsigned int offset;
unsigned char *data;
+unsigned long datalen;
typedef void (*kernel_entry)(unsigned long reg_a0, unsigned long reg_a1,
unsigned long reg_a2, unsigned long reg_a3);
-/* flash access should be aligned, so wrapper is used */
-/* read byte from the flash, all accesses are 32-bit aligned */
static int read_byte(void *object, unsigned char **buffer, UInt32 *bufferSize)
{
- static unsigned int val;
-
- if (((unsigned int)offset % 4) == 0) {
- val = *(unsigned int *)data;
- data += 4;
- }
-
*bufferSize = 1;
- *buffer = ((unsigned char *)&val) + (offset++ & 3);
+ *buffer = data++;
return LZMA_RESULT_OK;
}
@@ -121,10 +128,90 @@ static __inline__ unsigned char get_byte(void)
unsigned char *buffer;
UInt32 fake;
- return read_byte(0, &buffer, &fake), *buffer;
+ read_byte(0, &buffer, &fake);
+ return *buffer;
+}
+
+static __inline__ unsigned int read_le32(void *buf)
+{
+ unsigned char *p;
+
+ p = buf;
+ return ((unsigned int)p[0] + ((unsigned int)p[1] << 8) +
+ ((unsigned int)p[2] << 16) +((unsigned int)p[3] << 24));
+}
+
+static void print_char(char ch)
+{
+ if (ch == '\n')
+ board_putc('\r');
+ board_putc(ch);
+}
+
+static void print_str(char * str)
+{
+ while ( *str != 0 )
+ print_char(*str++);
+}
+
+static void print_hex(int val)
+{
+ int i;
+ int tmp;
+
+ print_str("0x");
+ for ( i=0 ; i<8 ; i++ ) {
+ tmp = (val >> ((7-i) * 4 )) & 0xf;
+ tmp = tmp < 10 ? (tmp + '0') : (tmp + 'A' - 10);
+ board_putc(tmp);
+ }
+}
+
+static unsigned char *find_kernel(void)
+{
+ struct trx_header *hdr;
+ unsigned char *ret;
+
+ print_str("Looking for TRX header... ");
+ /* look for trx header, 32-bit data access */
+ hdr = NULL;
+ for (ret = ((unsigned char *) KSEG1ADDR(ADM5120_FLASH_START));
+ ret < ((unsigned char *)KSEG1ADDR(ADM5120_FLASH_END));
+ ret += TRX_ALIGN) {
+
+ if (read_le32(ret) == TRX_MAGIC) {
+ hdr = (struct trx_header *)ret;
+ break;
+ }
+ }
+
+ if (hdr == NULL) {
+ print_str("not found!\n");
+ return NULL;
+ }
+
+ print_str("found at ");
+ print_hex((unsigned int)ret);
+ print_str(", kernel in partition ");
+
+ /* compressed kernel is in the partition 0 or 1 */
+ if ((read_le32(&hdr->offsets[1]) == 0) ||
+ (read_le32(&hdr->offsets[1]) > 65536)) {
+ ret += read_le32(&hdr->offsets[0]);
+ print_str("0\n");
+ } else {
+ ret += read_le32(&hdr->offsets[1]);
+ print_str("1\n");
+ }
+
+ return ret;
}
-int uart_write_str(char * str);
+static void halt(void)
+{
+ print_str("\nSystem halted!\n");
+ for(;;);
+}
/* should be the first function */
void decompress_entry(unsigned long reg_a0, unsigned long reg_a1,
@@ -137,23 +224,27 @@ void decompress_entry(unsigned long reg_a0, unsigned long reg_a1,
unsigned int lp; /* literal pos state bits */
unsigned int pb; /* pos state bits */
unsigned int osize; /* uncompressed size */
-
+ int res;
+#if !(LZMA_WRAPPER)
ILzmaInCallback callback;
- callback.Read = read_byte;
+#endif
- uart_write_str("decompress kernel ... ");
+ board_init();
- /* look for trx header, 32-bit data access */
- for (data = ((unsigned char *) KSEG1ADDR(BCM4710_FLASH));
- ((struct trx_header *)data)->magic != TRX_MAGIC; data += 65536);
+ print_str("\n\nLZMA loader for ADM5120, Copyright (C) 2007 OpenWrt.org\n\n");
- /* compressed kernel is in the partition 0 or 1 */
- if (((struct trx_header *)data)->offsets[1] > 65536)
- data += ((struct trx_header *)data)->offsets[0];
- else
- data += ((struct trx_header *)data)->offsets[1];
+#if LZMA_WRAPPER
+ data = _lzma_data_start;
+ datalen = _lzma_data_end - _lzma_data_start;
+#else
+ data = find_kernel();
+ if (data == NULL) {
+ /* no compressed kernel found, halting */
+ halt();
+ }
- offset = 0;
+ datalen = ((unsigned char *) KSEG1ADDR(ADM5120_FLASH_END))-data;
+#endif
/* lzma args */
i = get_byte();
@@ -174,68 +265,33 @@ void decompress_entry(unsigned long reg_a0, unsigned long reg_a1,
for (i = 0; i < 4; i++)
get_byte();
+ print_str("decompressing kernel... ");
+
/* decompress kernel */
- if (LzmaDecode(workspace, ~0, lc, lp, pb, &callback,
- (unsigned char*)LOADADDR, osize, &i) == LZMA_RESULT_OK)
- {
- blast_dcache(dcache_size, dcache_lsize);
- blast_icache(icache_size, icache_lsize);
-
- /* Jump to load address */
- uart_write_str("ok\r\n");
- ((kernel_entry) LOADADDR)(reg_a0, reg_a1, reg_a2, reg_a3);
+#if LZMA_WRAPPER
+ res = LzmaDecode(workspace, ~0, lc, lp, pb, data, datalen,
+ (unsigned char*)LOADADDR, osize, &i);
+#else
+ callback.Read = read_byte;
+ res = LzmaDecode(workspace, ~0, lc, lp, pb, &callback,
+ (unsigned char*)LOADADDR, osize, &i);
+#endif
+ if (res != LZMA_RESULT_OK) {
+ print_str("failed, LzmaDecode error: ");
+ print_hex(res);
+ print_str("\n");
+ halt();
}
- uart_write_str("failed\r\n");
- while (1 );
-}
-/* *********************************************************************
- *
- * ADM5120 UART driver File: dev_adm_uart.c
- *
- * This is a console device driver for an ADM5120 UART
- *
- *********************************************************************
- *
- * Copyright 2006
- * Compex Systems. All rights reserved.
- *
- ********************************************************************* */
-
-#define READCSR(r) *(volatile UInt32 *)(0xB2600000+(r))
-#define WRITECSR(r,v) *(volatile UInt32 *)(0xB2600000+(r)) = v
-
-#define UART_DR_REG 0x00
-#define UART_FR_REG 0x18
-#define UART_TX_FIFO_FULL 0x20
-
-int uart_write(int val)
-{
- WRITECSR(UART_DR_REG, val);
- while ( (READCSR(UART_FR_REG) & UART_TX_FIFO_FULL) );
- return 0;
-}
+ print_str("done!\n");
-int uart_write_str(char * str)
-{
- while ( *str != 0 ) {
- uart_write ( *str++ );
- }
- return 0;
-}
+ blast_dcache(dcache_size, dcache_lsize);
+ blast_icache(icache_size, icache_lsize);
-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;
- tmp = tmp < 10 ? (tmp + '0') : (tmp + 'A' - 10);
- uart_write(tmp);
- }
- uart_write_str("\r\n");
- return 0;
+ print_str("launching kernel...\n\n");
+
+ /* Jump to load address */
+ ((kernel_entry) LOADADDR)(reg_a0, reg_a1, reg_a2, reg_a3);
}
+
diff --git a/target/linux/adm5120-2.6/image/lzma-loader/src/head.S b/target/linux/adm5120-2.6/image/lzma-loader/src/head.S
index 3bfab9ff1..ee8b3200c 100644
--- a/target/linux/adm5120-2.6/image/lzma-loader/src/head.S
+++ b/target/linux/adm5120-2.6/image/lzma-loader/src/head.S
@@ -12,7 +12,11 @@
#define KSEG0 0x80000000
+#define C0_STATUS $12
+#define C0_CAUSE $13
#define C0_CONFIG $16
+#define C0_WATCHLO $18
+#define C0_WATCHHI $19
#define C0_TAGLO $28
#define C0_TAGHI $29
@@ -40,17 +44,28 @@
.text
-#if (BZ_STARTUP_ORG)
+#if (LZMA_STARTUP_ORG)
.set noreorder
b startup
nop
- .org BZ_STARTUP_ORG
+ .org LZMA_STARTUP_ORG
#endif
LEAF(startup)
.set noreorder
+ .set mips32
+
+ mtc0 zero, C0_WATCHLO # clear watch registers
+ mtc0 zero, C0_WATCHHI
+
+ mtc0 zero, C0_CAUSE # clear before writing status register
+
+ mfc0 t0, C0_STATUS # get status register
+ li t1, ~(0xFF01)
+ and t0, t1 # mask interrupts
+ mtc0 t0, C0_STATUS # set up status register
move t1, ra # save return address
la t0, __reloc_label # get linked address of label
diff --git a/target/linux/adm5120-2.6/image/lzma-loader/src/loader.lds b/target/linux/adm5120-2.6/image/lzma-loader/src/loader.lds
new file mode 100644
index 000000000..f9358257c
--- /dev/null
+++ b/target/linux/adm5120-2.6/image/lzma-loader/src/loader.lds
@@ -0,0 +1,27 @@
+OUTPUT_ARCH(mips)
+SECTIONS {
+ .text : {
+ _code_start = .;
+ *(.text)
+ *(.text.*)
+ *(.rodata)
+ *(.rodata.*)
+ }
+
+ .data : {
+ *(.data)
+ *(.data.*)
+ }
+ _code_end = .;
+
+ .bss : {
+ *(.bss)
+ *(.bss.*)
+ }
+
+ . = ALIGN(16);
+ . = . + 8192;
+ _stack = .;
+
+ workspace = .;
+}
diff --git a/target/linux/adm5120-2.6/image/lzma-loader/src/loader.lds.in b/target/linux/adm5120-2.6/image/lzma-loader/src/loader.lds.in
index 8c1bb9bd6..e69de29bb 100644
--- a/target/linux/adm5120-2.6/image/lzma-loader/src/loader.lds.in
+++ b/target/linux/adm5120-2.6/image/lzma-loader/src/loader.lds.in
@@ -1,27 +0,0 @@
-OUTPUT_ARCH(mips)
-SECTIONS {
- .text : {
- _code_start = .;
- *(.text)
- *(.text.*)
- *(.rodata)
- *(.rodata.*)
- _code_end = .;
- }
-
- .data : {
- *(.data)
- *(.data.*)
- }
-
- .bss : {
- *(.bss)
- *(.bss.*)
- }
-
- . = ALIGN(16);
- . = . + 8192;
- _stack = .;
-
- workspace = .;
-}
diff --git a/target/linux/adm5120-2.6/image/lzma-loader/src/lzma-data.lds b/target/linux/adm5120-2.6/image/lzma-loader/src/lzma-data.lds
new file mode 100644
index 000000000..b6984d742
--- /dev/null
+++ b/target/linux/adm5120-2.6/image/lzma-loader/src/lzma-data.lds
@@ -0,0 +1,9 @@
+OUTPUT_ARCH(mips)
+SECTIONS {
+ .rodata : {
+ . = ALIGN(16);
+ _lzma_data_start = .;
+ *(.data)
+ _lzma_data_end = .;
+ }
+}