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authorKarl Kurbjun <kkurbjun@gmail.com>2007-09-22 06:04:14 +0000
committerKarl Kurbjun <kkurbjun@gmail.com>2007-09-22 06:04:14 +0000
commit4a42723c33faf11c663c2ea162b0a2eb93b42a02 (patch)
tree229dfd539d1301a8c3af5194bc893ee3d15669af
parente571cfb070c5f8740e449374654045526b4b0e36 (diff)
downloadrockbox-4a42723c33faf11c663c2ea162b0a2eb93b42a02.tar.gz
rockbox-4a42723c33faf11c663c2ea162b0a2eb93b42a02.zip
Seperate M:Robe crt0.S, fix the vector tables for the bootloader, and show touchscreen values on single line.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14814 a1c6a512-1295-4272-9138-f99709370657
-rwxr-xr-xbootloader/mrobe500.c10
-rw-r--r--firmware/SOURCES4
-rw-r--r--firmware/boot.lds24
-rw-r--r--firmware/target/arm/crt0.S29
-rw-r--r--firmware/target/arm/olympus/mrobe-500/adc-mr500.c2
-rwxr-xr-xfirmware/target/arm/olympus/mrobe-500/crt0.S196
-rw-r--r--firmware/target/arm/olympus/mrobe-500/system-mr500.c22
7 files changed, 246 insertions, 41 deletions
diff --git a/bootloader/mrobe500.c b/bootloader/mrobe500.c
index 50c2acb9bd..1bfadd4769 100755
--- a/bootloader/mrobe500.c
+++ b/bootloader/mrobe500.c
@@ -41,13 +41,15 @@
#include "spi-target.h"
#include "uart-target.h"
+extern int line;
+
void main(void)
{
- unsigned char* loadbuffer;
+/* unsigned char* loadbuffer;
int buffer_size;
int rc;
int(*kernel_entry)(void);
-
+*/
power_init();
system_init();
kernel_init();
@@ -115,12 +117,14 @@ void main(void)
unsigned char out[] = {command >> 8, command & 0xff};
unsigned char in[8];
dm320_spi_block_transfer(out, sizeof(out), in, sizeof(in));
-
+
printf("%02x%02x %02x%02x %02x%02x %02x%02x\n",
in[0], in[1],
in[2], in[3],
in[4], in[5],
in[6], in[7]);
+ line--;
+
}
#if 0
rc = ata_init();
diff --git a/firmware/SOURCES b/firmware/SOURCES
index 9dd617b5d5..454f9e1fe2 100644
--- a/firmware/SOURCES
+++ b/firmware/SOURCES
@@ -327,6 +327,8 @@ target/arm/crt0-pp.S
#endif
#elif CONFIG_CPU == PNX0101
target/arm/pnx0101/crt0-pnx0101.S
+#elif defined(OLYMPUS_MROBE_500)
+target/arm/olympus/mrobe-500/crt0.S
#elif defined(CPU_ARM)
target/arm/crt0.S
#endif /* defined(CPU_*) */
@@ -790,7 +792,7 @@ target/arm/pnx0101/iriver-ifp7xx/button-ifp7xx.c
target/arm/pnx0101/iriver-ifp7xx/lcd-ifp7xx.c
target/arm/pnx0101/iriver-ifp7xx/power-ifp7xx.c
target/arm/pnx0101/iriver-ifp7xx/powermgmt-ifp7xx.c
-target/arm/pnx0101/iriver-ifp7xx/usb-ifp7xx.c
+target/arm/pnx0101/iriver-ifp7xx/usb-ifp7xx.c
#ifndef BOOTLOADER
target/arm/pnx0101/pcm-pnx0101.c
#endif
diff --git a/firmware/boot.lds b/firmware/boot.lds
index 999e1b0f26..e3dbb49a8c 100644
--- a/firmware/boot.lds
+++ b/firmware/boot.lds
@@ -9,6 +9,8 @@ OUTPUT_FORMAT(elf32-littlearm)
OUTPUT_ARCH(arm)
#ifdef CPU_PP
INPUT(target/arm/crt0-pp-bl.o)
+#elif defined(OLYMPUS_MROBE_500)
+INPUT(target/arm/olympus/mrobe-500/crt0.o)
#else
INPUT(target/arm/crt0.o)
#endif
@@ -169,14 +171,6 @@ SECTIONS
{
. = DRAMORIG + 0x1000000;
- .vectors 0x0 :
- {
- _vectorsstart = .;
- *(.vectors);
- _vectorsend = .;
- } AT> DRAM
- _vectorscopy = LOADADDR(.vectors);
-
.text : {
*(.init.text)
*(.text*)
@@ -215,12 +209,26 @@ SECTIONS
_stackend = .;
stackend = .;
} >DRAM
+
.bss : {
_edata = .;
*(.bss*);
*(.ibss);
_end = .;
}>DRAM
+
+ .vectors 0x0 :
+ {
+ loadaddress = .;
+ _loadaddress = .;
+ _vectorsstart = .;
+ KEEP(*(.resetvectors));
+ *(.resetvectors);
+ KEEP(*(.vectors));
+ *(.vectors);
+ _vectorsend = .;
+ } AT> DRAM
+ _vectorscopy = LOADADDR(.vectors);
}
#elif (CONFIG_CPU==IMX31L)
{
diff --git a/firmware/target/arm/crt0.S b/firmware/target/arm/crt0.S
index d734f82df8..c01a4feb76 100644
--- a/firmware/target/arm/crt0.S
+++ b/firmware/target/arm/crt0.S
@@ -428,36 +428,11 @@ irq_stack:
.space 256*4
fiq_stack:
-#else
- /* get the high part of our execute address */
- ldr r2, =0xffffff00
- and r4, pc, r2
-
- /* Copy bootloader to safe area - 0x01900000 */
- mov r5, #0x00900000
- add r5, r5, #0x01000000
- ldr r6, = _dataend
- sub r0, r6, r5 /* length of loader */
- add r0, r4, r0 /* r0 points to start of loader */
-1:
- cmp r5, r6
- ldrcc r2, [r4], #4
- strcc r2, [r5], #4
- bcc 1b
-
- ldr pc, =start_loc /* jump to the relocated start_loc: */
-
-start_loc:
- bl main
-
#endif
#else /* BOOTLOADER */
-
-
-
- /* Set up stack for IRQ mode */
+ /* Set up stack for IRQ mode */
msr cpsr_c, #0xd2
ldr sp, =irq_stack
/* Set up stack for FIQ mode */
@@ -549,4 +524,4 @@ irq_stack:
.space 256*4
fiq_stack:
-#endif /* BOOTLOADER */
+#endif /* BOOTLOADER */
diff --git a/firmware/target/arm/olympus/mrobe-500/adc-mr500.c b/firmware/target/arm/olympus/mrobe-500/adc-mr500.c
index 4fb2aa3677..39d92d67b0 100644
--- a/firmware/target/arm/olympus/mrobe-500/adc-mr500.c
+++ b/firmware/target/arm/olympus/mrobe-500/adc-mr500.c
@@ -5,7 +5,7 @@
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
- * $Id: $
+ * $Id$
*
* Copyright (C) 2007 by Karl Kurbjun
*
diff --git a/firmware/target/arm/olympus/mrobe-500/crt0.S b/firmware/target/arm/olympus/mrobe-500/crt0.S
new file mode 100755
index 0000000000..cf6d02a99c
--- /dev/null
+++ b/firmware/target/arm/olympus/mrobe-500/crt0.S
@@ -0,0 +1,196 @@
+/***************************************************************************
+ * __________ __ ___.
+ * Open \______ \ ____ ____ | | _\_ |__ _______ ___
+ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+ * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+ * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+ * \/ \/ \/ \/ \/
+ * $Id$
+ *
+ * Copyright (C) 2002 by Linus Nielsen Feltzing
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include "config.h"
+#include "cpu.h"
+
+ .section .init.text,"ax",%progbits
+
+ .global start
+start:
+ msr cpsr, #0xd3 /* enter supervisor mode, disable IRQ */
+
+#if !defined(DEBUG)
+ /* Copy exception handler code to address 0 */
+ ldr r2, =_vectorsstart
+ ldr r3, =_vectorsend
+ ldr r4, =_vectorscopy
+1:
+ cmp r3, r2
+ ldrhi r5, [r4], #4
+ strhi r5, [r2], #4
+ bhi 1b
+#else
+ ldr r1, =vectors
+ ldr r0, =irq_handler
+ str r0, [r1, #24]
+ ldr r0, =fiq_handler
+ str r0, [r1, #28]
+#endif
+
+#if !defined(BOOTLOADER)
+
+#if !defined(STUB)
+ /* Zero out IBSS */
+ ldr r2, =_iedata
+ ldr r3, =_iend
+ mov r4, #0
+1:
+ cmp r3, r2
+ strhi r4, [r2], #4
+ bhi 1b
+
+ /* Copy the IRAM */
+ ldr r2, =_iramcopy
+ ldr r3, =_iramstart
+ ldr r4, =_iramend
+1:
+ cmp r4, r3
+ ldrhi r5, [r2], #4
+ strhi r5, [r3], #4
+ bhi 1b
+#endif /* !STUB */
+#endif /* !BOOTLOADER */
+
+ /* Initialise bss section to zero */
+ ldr r2, =_edata
+ ldr r3, =_end
+ mov r4, #0
+1:
+ cmp r3, r2
+ strhi r4, [r2], #4
+ bhi 1b
+
+ /* Set up some stack and munge it with 0xdeadbeef */
+ ldr r3, =stackend
+ ldr r2, =stackbegin
+ ldr r4, =0xdeadbeef
+1:
+ cmp r3, r2
+ strhi r4, [r2], #4
+ bhi 1b
+
+ /* Set up stack for IRQ mode */
+ msr cpsr_c, #0xd2
+ ldr sp, =irq_stack
+ /* Set up stack for FIQ mode */
+ msr cpsr_c, #0xd1
+ ldr sp, =fiq_stack
+
+ /* Let abort and undefined modes use IRQ stack */
+ msr cpsr_c, #0xd7
+ ldr sp, =irq_stack
+ msr cpsr_c, #0xdb
+ ldr sp, =irq_stack
+ /* Switch to supervisor mode */
+ msr cpsr_c, #0xd3
+ ldr sp, =stackend
+
+#ifdef BOOTLOADER
+ /* get the high part of our execute address */
+ ldr r2, =0xffffff00
+ and r4, pc, r2
+
+ /* Copy bootloader to safe area - 0x01900000 */
+ mov r5, #0x00900000
+ add r5, r5, #0x01000000
+ ldr r6, = _dataend
+ sub r0, r6, r5 /* length of loader */
+ add r0, r4, r0 /* r0 points to start of loader */
+1:
+ cmp r5, r6
+ ldrcc r2, [r4], #4
+ strcc r2, [r5], #4
+ bcc 1b
+
+ ldr pc, =start_loc /* jump to the relocated start_loc: */
+
+#endif
+
+start_loc:
+ bl main
+ /* main() should never return */
+
+/* Exception handlers. Will be copied to address 0 after memory remapping */
+ .section .vectors,"aw"
+ ldr pc, [pc, #24]
+ ldr pc, [pc, #24]
+ ldr pc, [pc, #24]
+ ldr pc, [pc, #24]
+ ldr pc, [pc, #24]
+ ldr pc, [pc, #24]
+ ldr pc, [pc, #24]
+ ldr pc, [pc, #24]
+
+ /* Exception vectors */
+ .global vectors
+vectors:
+ .word start
+ .word undef_instr_handler
+ .word software_int_handler
+ .word prefetch_abort_handler
+ .word data_abort_handler
+ .word reserved_handler
+ .word irq_handler
+ .word fiq_handler
+
+ .text
+
+#if !defined(STUB)
+ .global irq
+ .global fiq
+ .global UIE
+#endif
+
+/* All illegal exceptions call into UIE with exception address as first
+ parameter. This is calculated differently depending on which exception
+ we're in. Second parameter is exception number, used for a string lookup
+ in UIE.
+ */
+undef_instr_handler:
+ mov r0, lr
+ mov r1, #0
+ b UIE
+
+/* We run supervisor mode most of the time, and should never see a software
+ exception being thrown. Perhaps make it illegal and call UIE?
+ */
+software_int_handler:
+reserved_handler:
+ movs pc, lr
+
+prefetch_abort_handler:
+ sub r0, lr, #4
+ mov r1, #1
+ b UIE
+
+data_abort_handler:
+ sub r0, lr, #8
+ mov r1, #2
+ b UIE
+
+UIE:
+ b UIE
+
+/* 256 words of IRQ stack */
+ .space 256*4
+irq_stack:
+
+/* 256 words of FIQ stack */
+ .space 256*4
+fiq_stack:
diff --git a/firmware/target/arm/olympus/mrobe-500/system-mr500.c b/firmware/target/arm/olympus/mrobe-500/system-mr500.c
index c93c9f6260..1163104ad2 100644
--- a/firmware/target/arm/olympus/mrobe-500/system-mr500.c
+++ b/firmware/target/arm/olympus/mrobe-500/system-mr500.c
@@ -5,7 +5,7 @@
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
- * $Id: $
+ * $Id$
*
* Copyright (C) 2007 by Karl Kurbjun
*
@@ -119,6 +119,26 @@ void irq_handler(void)
);
}
+void fiq_handler(void) __attribute__((interrupt ("FIQ"), naked));
+void fiq_handler(void)
+{
+ /*
+ * Based on: linux/arch/arm/kernel/entry-armv.S and system-meg-fx.c
+ */
+
+ asm volatile (
+ "sub lr, lr, #4 \r\n"
+ "stmfd sp!, {r0-r3, ip, lr} \r\n"
+ "mov r0, #0x00030000 \r\n"
+ "ldr r0, [r0, #0x518] \r\n"
+ "ldr r1, =irqvector \r\n"
+ "ldr r1, [r1, r0, lsl #2] \r\n"
+ "mov lr, pc \r\n"
+ "bx r1 \r\n"
+ "ldmfd sp!, {r0-r3, ip, pc}^ \r\n"
+ );
+}
+
void system_reboot(void)
{