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First version 

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@158 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Linus Nielsen Feltzing 2002-04-20 23:18:14 +00:00
parent f3989d3c93
commit 257d17da6d
6 changed files with 462 additions and 0 deletions
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164
firmware/mas.c Normal file
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/***************************************************************************
* __________ __ ___.
* 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 "i2c.h"
#include "debug.h"
#include "mas.h"
/* note: 'len' is number of 32-bit words, not number of bytes! */
int mas_readmem(int bank, int addr, unsigned long* dest, int len)
{
int i;
unsigned char buf[16];
i=0;
buf[i++] = MAS_DATA_WRITE;
buf[i++] = bank?0xf0:0xe0;
buf[i++] = 0x00;
buf[i++] = (len & 0xff00) >> 8;
buf[i++] = len & 0xff;
buf[i++] = (addr & 0xff00) >> 8;
buf[i++] = addr & 0xff;
/* send read command */
if (i2c_write(MAS_DEV_WRITE,buf,i))
{
return -1;
}
return mas_devread(dest, len);
}
/* note: 'len' is number of 32-bit words, not number of bytes! */
int mas_writemem(int bank, int addr, unsigned long* src, int len)
{
int i, j;
unsigned char buf[60];
unsigned char* ptr = (unsigned char*)src;
i=0;
buf[i++] = MAS_DATA_WRITE;
buf[i++] = bank;
buf[i++] = 0x00;
buf[i++] = (len & 0xff00) >> 8;
buf[i++] = len & 0xff;
buf[i++] = (addr & 0xff00) >> 8;
buf[i++] = addr & 0xff;
j = 0;
while(len--) {
buf[i++] = ptr[j*4+1];
buf[i++] = ptr[j*4+0];
buf[i++] = 0;
buf[i++] = ptr[j*4+2];
j += 4;
}
/* send write command */
if (i2c_write(MAS_DEV_WRITE,buf,i))
{
return -1;
}
return 0;
}
int mas_readreg(int reg)
{
int i;
unsigned char buf[16];
i=0;
buf[i++] = MAS_DATA_WRITE;
buf[i++] = 0xd0 | reg >> 4;
buf[i++] = (reg & 0x0f) << 4;
/* send read command */
if (i2c_write(MAS_DEV_WRITE,buf,i))
{
return -1;
}
if(mas_devread((unsigned long *)buf, 1))
{
return -2;
}
return buf[0] | buf[1] << 8 | buf[3] << 16;
}
int mas_writereg(int reg, unsigned short val)
{
int i;
unsigned char buf[16];
i=0;
buf[i++] = MAS_DATA_WRITE;
buf[i++] = 0x90 | reg >> 4;
buf[i++] = ((reg & 0x0f) << 4) | (val & 0x0f);
buf[i++] = (val >> 12) & 0xff;
buf[i++] = (val >> 4) & 0xff;
/* send write command */
if (i2c_write(MAS_DEV_WRITE,buf,i))
{
return -1;
}
return 0;
}
/* note: 'len' is number of 32-bit words, not number of bytes! */
int mas_devread(unsigned long *dest, int len)
{
unsigned char* ptr = (unsigned char*)dest;
int ret = 0;
int i;
/* handle read-back */
i2c_start();
i2c_outb(MAS_DEV_WRITE);
if (i2c_getack()) {
i2c_outb(MAS_DATA_READ);
if (i2c_getack()) {
i2c_start();
i2c_outb(MAS_DEV_READ);
if (i2c_getack()) {
for (i=0;len;i++) {
len--;
ptr[i*4+1] = i2c_inb(0);
ptr[i*4+0] = i2c_inb(0);
ptr[i*4+3] = i2c_inb(0);
if(len)
ptr[i*4+2] = i2c_inb(0);
else
ptr[i*4+2] = i2c_inb(1); /* NAK the last byte */
}
}
else
ret = -3;
}
else
ret = -2;
}
else
ret = -1;
i2c_stop();
return ret;
}

54
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/***************************************************************************
* __________ __ ___.
* 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.
*
****************************************************************************/
#ifndef _MAS_H_
#define _MAS_H_
#define MAS_BANK_D0 0
#define MAS_BANK_D1 1
/*
MAS I2C defs
*/
#define MAS_ADR 0x3a
#define MAS_DEV_WRITE (MAS_ADR | 0x00)
#define MAS_DEV_READ (MAS_ADR | 0x01)
/* registers..*/
#define MAS_DATA_WRITE 0x68
#define MAS_DATA_READ 0x69
#define MAS_CONTROL 0x6a
/*
* MAS register
*/
#define MAS_REG_DCCF 0x8e
#define MAS_REG_MUTE 0xaa
#define MAS_REG_PIODATA 0xc8
#define MAS_REG_StartUpConfig 0xe6
#define MAS_REG_KPRESCALE 0xe7
#define MAS_REG_KBASS 0x6b
#define MAS_REG_KTREBLE 0x6f
int mas_readmem(int bank, int addr, unsigned long* dest, int len);
int mas_writemem(int bank, int addr, unsigned long* src, int len);
int mas_devread(unsigned long *buf, int len);
int mas_readreg(int reg);
int mas_writereg(int reg, unsigned short val);
#endif

44
firmware/test/i2c/Makefile Normal file
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CC = sh-elf-gcc
LD = sh-elf-ld
AR = sh-elf-ar
AS = sh-elf-as
OC = sh-elf-objcopy
INCLUDES=-I../../
CFLAGS = -g -Wall -m1 -nostdlib -Wstrict-prototypes -fomit-frame-pointer -fschedule-insns -fno-builtin $(INCLUDES)
AFLAGS += -small -relax
OBJS= crt0.o main.o ../../lcd.o ../../i2c.o ../../mas.o ../../debug.o
%.o: %.S
$(CC) -o $@ $(CFLAGS) $(INCLUDES) $(DEFS) -c $<
all : archos.mod
main.o: main.c
archos.elf : $(OBJS) app.lds
$(CC) -nostartfiles -o archos.elf $(OBJS) -lgcc -Tapp.lds -Wl,-Map,archos.map
archos.bin : archos.elf
$(OC) -O binary archos.elf archos.bin
archos.asm: archos.bin
sh2d -sh1 archos.bin > archos.asm
archos.mod : archos.bin
scramble archos.bin archos.mod
archos.mod.gz : archos.mod
gzip -f archos.mod
dist:
tar czvf dist.tar.gz Makefile main.c start.s app.lds
clean:
-rm -f *.x *.i *.o *.elf *.bin *.map *.mod *.bak *~
install:
mount /mnt/archos; cp archos.mod /mnt/archos; umount /mnt/archos

23
firmware/test/i2c/app.lds Normal file
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ENTRY(start)
OUTPUT_FORMAT(elf32-sh)
SECTIONS
{
.text 0x09018000 :
{
*(.rodata)
*(.text)
}
.data :
{
*(.data)
}
.bss :
{
*(.bss)
_end = . + 0x8000;
_stack = . + 0x9000;
_edata = .;
}
}

49
firmware/test/i2c/crt0.S Normal file
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.section .text
.global start
start:
mov.l stack_k,r15
! zero out bss
mov.l edata_k,r0
mov.l end_k,r1
mov #0,r2
start_l:
mov.l r2,@r0
add #4,r0
cmp/ge r0,r1
bt start_l
nop
#if defined (__SH3E__) || defined(__SH4_SINGLE__) || defined(__SH4__) || defined(__SH4_SINGLE_ONLY)
mov.l set_fpscr_k, r1
jsr @r1
mov #0,r4
lds r3,fpscr
#endif /* defined (__SH3E__) || defined(__SH4_SINGLE__) || defined(__SH4__) || defined(__SH4_SINGLE_ONLY__) */
! call the mainline
mov.l main_k,r0
jsr @r0
nop
.hoo:
bra .hoo
.align 2
#if defined (__SH3E__) || defined(__SH4_SINGLE__) || defined(__SH4__) || defined(__SH4_SINGLE_ONLY__)
set_fpscr_k:
.long ___set_fpscr
#endif /* defined (__SH3E__) || defined(__SH4_SINGLE__) || defined(__SH4__) || defined(SH4_SINGLE_ONLY) */
stack_k:
.long _stack
edata_k:
.long _edata
end_k:
.long _end
main_k:
.long _main
#ifdef __ELF__
.section .stack,"aw"
#else
.section .stack
#endif

128
firmware/test/i2c/main.c Normal file
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/***************************************************************************
* __________ __ ___.
* 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 "i2c.h"
#include "mas.h"
#include "sh7034.h"
#include "debug.h"
int strlen(unsigned char* str)
{
int i=0;
while (*str++)
i++;
return i;
}
int main(void)
{
char buf[40];
char str[32];
int i=0;
/* Clear it all! */
SSR1 &= ~(SCI_RDRF | SCI_ORER | SCI_PER | SCI_FER);
/* This enables the serial Rx interrupt, to be able to exit into the
debugger when you hit CTRL-C */
SCR1 |= 0x40;
SCR1 &= ~0x80;
asm ("ldc\t%0,sr" : : "r"(0<<4));
debugf("Olle: %d\n", 7);
i2c_init();
debug("I2C Init done\n");
i=mas_readmem(MAS_BANK_D1,0xff6,(unsigned long*)buf,2);
if (i) {
debugf("Error - mas_readmem() returned %d\n", i);
while(1);
}
i = buf[0] | buf[1] << 8;
debugf("MAS version: %x\n", i);
i = buf[4] | buf[5] << 8;
debugf("MAS revision: %x\n", i);
i=mas_readmem(MAS_BANK_D1,0xff9,(unsigned long*)buf,7);
if (i) {
debugf("Error - mas_readmem() returned %d\n", i);
while(1);
}
for(i = 0;i < 7;i++)
{
str[i*2+1] = buf[i*4];
str[i*2] = buf[i*4+1];
}
str[i*2] = 0;
debugf("Description: %s\n", str);
i=mas_readreg(0xe6);
if (i < 0) {
debugf("Error - mas_readreg() returned %d\n", i);
while(1);
}
debugf("Register 0xe6: %x\n", i);
debugf("Writing register 0xaa\n");
i=mas_writereg(0xaa, 0x1);
if (i < 0) {
debugf("Error - mas_writereg() returned %d\n", i);
while(1);
}
i=mas_readreg(0xaa);
if (i < 0) {
debugf("Error - mas_readreg() returned %d\n", i);
while(1);
}
debugf("Register 0xaa: %x\n", i);
debugf("Writing register 0xaa again\n");
i=mas_writereg(0xaa, 0);
if (i < 0) {
debugf("Error - mas_writereg() returned %d\n", i);
while(1);
}
i=mas_readreg(0xaa);
if (i < 0) {
debugf("Error - mas_readreg() returned %d\n", i);
while(1);
}
debugf("Register 0xaa: %x\n", i);
while(1);
}
extern const void stack(void);
const void* vectors[] __attribute__ ((section (".vectors"))) =
{
main, /* Power-on reset */
stack, /* Power-on reset (stack pointer) */
main, /* Manual reset */
stack /* Manual reset (stack pointer) */
};