forked from len0rd/rockbox
m:robe 500i: Add DSP (C5409) control driver and image loader.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15713 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Catalin Patulea
parent
95ef859fac
commit
180bd76d89
4 changed files with 207 additions and 2 deletions
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@ -223,8 +223,8 @@
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#define IO_GIO_CARD_ST DM320_REG(0x05B0)
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/* DSP Controller */
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#define IO_DSPC_HPIB_CONTROL 0x0600
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#define IO_DSPC_HPIB_STATUS 0x0602
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#define IO_DSPC_HPIB_CONTROL DM320_REG(0x0600)
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#define IO_DSPC_HPIB_STATUS DM320_REG(0x0602)
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/* OSD Controller */
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#define IO_OSD_MODE DM320_REG(0x0680)
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146
firmware/target/arm/tms320dm320/dsp-dm320.c
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146
firmware/target/arm/tms320dm320/dsp-dm320.c
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2007 Catalin Patulea <cat@vv.carleton.ca>
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "config.h"
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#include "cpu.h"
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#include "system.h"
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#include "debug.h"
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#include "dsp-target.h"
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/* A "DSP image" is an array of these, terminated by raw_data_size_half = 0. */
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struct dsp_section {
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const unsigned short *raw_data;
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unsigned short physical_addr;
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unsigned short raw_data_size_half;
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};
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/* Must define struct dsp_section before including the image. */
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#include "dsp_image_helloworld.h"
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#ifdef DEBUG
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static void dsp_status(void) {
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unsigned short addr_7fff = DSP_(0x7fff);
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unsigned short hpib_ctl = IO_DSPC_HPIB_CONTROL;
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unsigned short hpib_stat = IO_DSPC_HPIB_STATUS;
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char buffer1[80], buffer2[80];
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DEBUGF("dsp_status(): clkc_hpib=%u clkc_dsp=%u",
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!!(IO_CLK_MOD0 & (1 << 11)), !!(IO_CLK_MOD0 & (1 << 10)));
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DEBUGF("dsp_status(): irq_dsphint=%u scratch_status=0x%04x"
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" acked=%04x",
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(IO_INTC_IRQ0 >> IRQ_DSPHINT) & 1, DSP_(_status), DSP_(_acked));
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#define B(f,w,b,m) if ((w & (1 << b)) == 0) \
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strcat(f, "!"); \
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strcat(f, #m "|");
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strcpy(buffer1, "");
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B(buffer1, hpib_ctl, 0, EN);
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B(buffer1, hpib_ctl, 3, NMI);
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B(buffer1, hpib_ctl, 5, EXCHG);
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B(buffer1, hpib_ctl, 7, DINT0);
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B(buffer1, hpib_ctl, 8, DRST);
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B(buffer1, hpib_ctl, 9, DHOLD);
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B(buffer1, hpib_ctl, 10, BIO);
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strcpy(buffer2, "");
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B(buffer2, hpib_stat, 8, HOLDA);
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B(buffer2, hpib_stat, 12, DXF);
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DEBUGF("dsp_status(): hpib: ctl=%s stat=%s", buffer1, buffer2);
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#undef B
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}
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#endif
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static void dsp_reset(void) {
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DSP_(0x7fff) = 0xdead;
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IO_DSPC_HPIB_CONTROL &= ~(1 << 8);
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/* HPIB bus cycles will lock up the ARM in here. Don't touch DSP RAM. */
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nop; nop;
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IO_DSPC_HPIB_CONTROL |= 1 << 8;
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/* TODO: Timeout. */
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while (DSP_(0x7fff) != 0);
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}
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void dsp_wake(void) {
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/* If this is called concurrently, we may overlap setting and resetting the
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bit, which causes lost interrupts to the DSP. */
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int old_level = set_irq_level(IRQ_DISABLED);
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/* The first time you INT0 the DSP, the ROM loader will branch to your RST
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handler. Subsequent times, your INT0 handler will get executed. */
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IO_DSPC_HPIB_CONTROL &= ~(1 << 7);
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nop; nop;
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IO_DSPC_HPIB_CONTROL |= 1 << 7;
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set_irq_level(old_level);
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}
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static void dsp_load(const struct dsp_section *im) {
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while (im->raw_data_size_half) {
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volatile unsigned short *data_ptr = &DSP_(im->physical_addr);
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unsigned int i;
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/* Use 16-bit writes. */
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if (im->raw_data) {
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DEBUGF("dsp_load(): loading %u words at 0x%04x (0x%08lx)",
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im->raw_data_size_half, im->physical_addr,
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(unsigned long)data_ptr);
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for (i = 0; i < im->raw_data_size_half; i++) {
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data_ptr[i] = im->raw_data[i];
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}
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} else {
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DEBUGF("dsp_load(): clearing %u words at 0x%04x (0x%08lx)",
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im->raw_data_size_half, im->physical_addr,
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(unsigned long)data_ptr);
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for (i = 0; i < im->raw_data_size_half; i++) {
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data_ptr[i] = 0;
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}
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}
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im++;
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}
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}
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void dsp_init(void) {
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IO_INTC_IRQ0 = 1 << 11;
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IO_INTC_EINT0 |= 1 << 11;
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dsp_reset();
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dsp_load(dsp_image_helloworld);
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}
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void DSPHINT(void) {
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unsigned int i;
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char buffer[80];
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IO_INTC_IRQ0 = 1 << 11;
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/* DSP stores one character per word. */
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for (i = 0; i < sizeof(buffer); i++) {
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buffer[i] = (&DSP_(_status))[i];
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}
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/* Release shared area to DSP. */
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dsp_wake();
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DEBUGF("DSP: %s", buffer);
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}
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29
firmware/target/arm/tms320dm320/dsp-target.h
Normal file
29
firmware/target/arm/tms320dm320/dsp-target.h
Normal file
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@ -0,0 +1,29 @@
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/*
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* (C) Copyright 2007 Catalin Patulea <cat@vv.carleton.ca>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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*/
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#ifndef DSP_H
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#define DSP_H
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/* DSP memory is mapped into ARM space via HPIB. */
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#define DSP_(addr) (*(volatile unsigned short *)(0x40000 + ((addr) << 1)))
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void dsp_init(void);
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void dsp_wake(void);
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#endif
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30
firmware/target/arm/tms320dm320/dsp_image_helloworld.h
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30
firmware/target/arm/tms320dm320/dsp_image_helloworld.h
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@ -0,0 +1,30 @@
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#ifndef DSP_IMAGE_HELLOWORLD
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#define DSP_IMAGE_HELLOWORLD
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/*
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* This is just a dummy DSP image so that dsp-dm320.c compiles.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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*/
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static const struct dsp_section dsp_image_helloworld[] = {
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{NULL, 0, 0}
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};
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/* Symbol table, usable with the DSP_() macro (see dsp-target.h). */
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#define _status 0x0000
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#endif
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