mirror of
https://github.com/RaySollium99/libpicofe.git
synced 2025-09-04 22:47:44 -04:00
code940 now plays mp3s
git-svn-id: file:///home/notaz/opt/svn/PicoDrive/platform@22 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz
parent
8dfb9fd5df
commit
b30a8e675a
6 changed files with 13 additions and 358 deletions
93
gp2x/940.c
93
gp2x/940.c
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@ -1,93 +0,0 @@
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#include "940shared.h"
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static _940_data_t *shared_data = (_940_data_t *) 0x100000;
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static _940_ctl_t *shared_ctl = (_940_ctl_t *) 0x200000;
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YM2612 *ym2612_940;
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int *mix_buffer;
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// from init.s
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void wait_irq(void);
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void spend_cycles(int c);
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void cache_clean(void);
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void cache_clean_flush(void);
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// asm volatile ("mov r0, #0" ::: "r0");
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// asm volatile ("mcr p15, 0, r0, c7, c6, 0" ::: "r0"); /* flush dcache */
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// asm volatile ("mcr p15, 0, r0, c7, c10, 4" ::: "r0"); /* drain write buffer */
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void Main940(int startvector)
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{
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ym2612_940 = &shared_data->ym2612;
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mix_buffer = shared_data->mix_buffer;
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// debug
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shared_ctl->vstarts[startvector]++;
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asm volatile ("mcr p15, 0, r0, c7, c10, 4" ::: "r0");
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for (;; shared_ctl->loopc++)
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{
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int job_num;
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/*
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while (!shared_ctl->busy)
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{
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//shared_ctl->waitc++;
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spend_cycles(256);
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}
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*/
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if (!shared_ctl->busy)
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{
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wait_irq();
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}
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for (job_num = 0; job_num < MAX_940JOBS; job_num++)
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{
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switch (shared_ctl->jobs[job_num])
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{
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case JOB940_YM2612INIT:
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shared_ctl->writebuff0[0] = shared_ctl->writebuff1[0] = 0xffff;
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YM2612Init_(shared_ctl->baseclock, shared_ctl->rate);
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break;
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case JOB940_YM2612RESETCHIP:
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YM2612ResetChip_();
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break;
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case JOB940_PICOSTATELOAD:
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YM2612PicoStateLoad_();
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break;
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case JOB940_YM2612UPDATEONE: {
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int i, dw, *wbuff;
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if (shared_ctl->writebuffsel == 1) {
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wbuff = (int *) shared_ctl->writebuff1;
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} else {
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wbuff = (int *) shared_ctl->writebuff0;
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}
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/* playback all writes */
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for (i = 2048/2; i > 0; i--) {
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UINT16 d;
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dw = *wbuff++;
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d = dw;
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if (d == 0xffff) break;
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YM2612Write_(d >> 8, d);
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d = (dw>>16);
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if (d == 0xffff) break;
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YM2612Write_(d >> 8, d);
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}
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YM2612UpdateOne_(0, shared_ctl->length, shared_ctl->stereo);
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break;
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}
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}
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}
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shared_ctl->busy = 0;
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// cache_clean_flush();
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cache_clean();
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// asm volatile ("mov r0, #0" ::: "r0");
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// asm volatile ("mcr p15, 0, r0, c7, c10, 4" ::: "r0"); /* drain write buffer, should be done on nonbuffered write */
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}
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}
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@ -7,7 +7,7 @@
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#include <fcntl.h>
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#include <errno.h>
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#include "940shared.h"
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#include "code940/940shared.h"
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#include "gp2x.h"
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#include "emu.h"
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#include "menu.h"
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@ -235,11 +235,11 @@ static void wait_busy_940(void)
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printf("wait iterations: %i\n", i);
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#else
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for (i = 0; shared_ctl->busy && i < 0x10000; i++)
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spend_cycles(4*1024);
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spend_cycles(8*1024); // tested to be best for mp3 dec
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if (i < 0x10000) return;
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/* 940 crashed */
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printf("940 crashed (cnt: %i, wc: %i, ve: ", shared_ctl->loopc, shared_ctl->waitc);
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printf("940 crashed (cnt: %i, ve: ", shared_ctl->loopc);
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for (i = 0; i < 8; i++)
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printf("%i ", shared_ctl->vstarts[i]);
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printf(")\n");
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@ -373,7 +373,7 @@ void YM2612Init_940(int baseclock, int rate)
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/* now cause 940 to init it's ym2612 stuff */
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shared_ctl->baseclock = baseclock;
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shared_ctl->rate = rate;
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shared_ctl->jobs[0] = JOB940_YM2612INIT;
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shared_ctl->jobs[0] = JOB940_INITALL;
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shared_ctl->jobs[1] = 0;
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shared_ctl->busy = 1;
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176
gp2x/940init.s
176
gp2x/940init.s
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@ -1,176 +0,0 @@
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.global code940
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code940: @ interrupt table:
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b .b_reset @ reset
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b .b_undef @ undefined instructions
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b .b_swi @ software interrupt
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b .b_pabort @ prefetch abort
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b .b_dabort @ data abort
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b .b_reserved @ reserved
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b .b_irq @ IRQ
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b .b_fiq @ FIQ
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@ test
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.b_reset:
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mov r12, #0
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b .Begin
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.b_undef:
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mov r12, #1
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b .Begin
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.b_swi:
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mov r12, #2
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b .Begin
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.b_pabort:
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mov r12, #3
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b .Begin
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.b_dabort:
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mov r12, #4
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b .Begin
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.b_reserved:
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mov r12, #5
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b .Begin
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.b_irq:
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mov r12, #6
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mov sp, #0x100000 @ reset stack
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sub sp, sp, #4
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mov r1, #0xbe000000 @ assume we live @ 0x2000000 bank
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orr r2, r1, #0x3B00
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orr r2, r2, #0x0046
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mvn r3, #0
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strh r3, [r2] @ clear any pending interrupts from the DUALCPU unit
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orr r2, r1, #0x4500
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str r3, [r2] @ clear all pending interrupts in irq controller's SRCPND register
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orr r2, r2, #0x0010
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str r3, [r2] @ clear all pending interrupts in irq controller's INTPND register
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b .Enter
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.b_fiq:
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mov r12, #7
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b .Begin
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.Begin:
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mov sp, #0x100000 @ set the stack top (1M)
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sub sp, sp, #4 @ minus 4
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@ set up memory region 0 -- the whole 4GB address space
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mov r0, #(0x1f<<1)|1 @ region data
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mcr p15, 0, r0, c6, c0, 0 @ opcode2 ~ data/instr
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mcr p15, 0, r0, c6, c0, 1
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@ set up region 1 which is the first 2 megabytes.
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mov r0, #(0x14<<1)|1 @ region data
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mcr p15, 0, r0, c6, c1, 0
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mcr p15, 0, r0, c6, c1, 1
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@ set up region 2: 64k 0x200000-0x210000
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mov r0, #(0x0f<<1)|1
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orr r0, r0, #0x200000
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mcr p15, 0, r0, c6, c2, 0
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mcr p15, 0, r0, c6, c2, 1
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@ set up region 3: 64k 0xbe000000-0xbe010000 (hw control registers)
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mov r0, #(0x0f<<1)|1
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orr r0, r0, #0xbe000000
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mcr p15, 0, r0, c6, c3, 0
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mcr p15, 0, r0, c6, c3, 1
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@ set region 1 to be cacheable (so the first 2M will be cacheable)
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mov r0, #2
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mcr p15, 0, r0, c2, c0, 0
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mcr p15, 0, r0, c2, c0, 1
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@ set region 1 to be bufferable too (only data)
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mcr p15, 0, r0, c3, c0, 0
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@ set protection, allow accsess only to regions 1 and 2
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mov r0, #(3<<6)|(3<<4)|(3<<2)|(0) @ data: [full, full, full, no access] for regions [3 2 1 0]
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mcr p15, 0, r0, c5, c0, 0
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mov r0, #(0<<6)|(0<<4)|(3<<2)|(0) @ instructions: [no access, no, full, no]
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mcr p15, 0, r0, c5, c0, 1
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mrc p15, 0, r0, c1, c0, 0 @ fetch current control reg
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orr r0, r0, #1 @ 0x00000001: enable protection unit
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orr r0, r0, #4 @ 0x00000004: enable D cache
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orr r0, r0, #0x1000 @ 0x00001000: enable I cache
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orr r0, r0, #0xC0000000 @ 0xC0000000: async+fastbus
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mcr p15, 0, r0, c1, c0, 0 @ set control reg
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@ flush (invalidate) the cache (just in case)
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mov r0, #0
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mcr p15, 0, r0, c7, c6, 0
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.Enter:
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mov r0, r12
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bl Main940
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@ we should never get here
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.b_deadloop:
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b .b_deadloop
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@ so asm utils are also defined here:
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.global spend_cycles @ c
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spend_cycles:
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mov r0, r0, lsr #2 @ 4 cycles/iteration
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sub r0, r0, #2 @ entry/exit/init
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.sc_loop:
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subs r0, r0, #1
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bpl .sc_loop
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bx lr
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@ clean-flush function from ARM940T technical reference manual
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.global cache_clean_flush
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cache_clean_flush:
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mov r1, #0 @ init line counter
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ccf_outer_loop:
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mov r0, #0 @ segment counter
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ccf_inner_loop:
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orr r2, r1, r0 @ make segment and line address
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mcr p15, 0, r2, c7, c14, 2 @ clean and flush that line
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add r0, r0, #0x10 @ incremet secment counter
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cmp r0, #0x40 @ complete all 4 segments?
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bne ccf_inner_loop
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add r1, r1, #0x04000000 @ increment line counter
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cmp r1, #0 @ complete all lines?
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bne ccf_outer_loop
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bx lr
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@ clean-only version
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.global cache_clean
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cache_clean:
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mov r1, #0 @ init line counter
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cf_outer_loop:
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mov r0, #0 @ segment counter
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cf_inner_loop:
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orr r2, r1, r0 @ make segment and line address
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mcr p15, 0, r2, c7, c10, 2 @ clean that line
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add r0, r0, #0x10 @ incremet secment counter
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cmp r0, #0x40 @ complete all 4 segments?
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bne cf_inner_loop
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add r1, r1, #0x04000000 @ increment line counter
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cmp r1, #0 @ complete all lines?
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bne cf_outer_loop
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bx lr
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.global wait_irq
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wait_irq:
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mrs r0, cpsr
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bic r0, r0, #0x80
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msr cpsr_c, r0 @ enable interrupts
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mov r0, #0
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mcr p15, 0, r0, c7, c0, 4 @ wait for IRQ
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@ mcr p15, 0, r0, c15, c8, 2
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b .b_reserved
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.pool
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@ vim:filetype=ignored:
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@ -1,35 +0,0 @@
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#include "../../Pico/sound/ym2612.h"
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enum _940_job_t {
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JOB940_YM2612INIT = 1,
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JOB940_YM2612RESETCHIP,
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JOB940_YM2612UPDATEONE,
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JOB940_PICOSTATELOAD,
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JOB940_NUMJOBS
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};
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#define MAX_940JOBS 2
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typedef struct
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{
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YM2612 ym2612; /* current state of the emulated YM2612 */
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int mix_buffer[44100/50*2]; /* this is where the YM2612 samples will be mixed to */
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short mp3_buffer[2][1152*2]; /* buffer for mp3 decoder's output */
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} _940_data_t;
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typedef struct
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{
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int jobs[MAX_940JOBS]; /* jobs for second core */
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int busy; /* busy status of the 940 core */
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int length; /* number of samples to mix (882 max) */
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int stereo; /* mix samples as stereo, doubles sample count automatically */
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int baseclock; /* ym2612 settings */
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int rate;
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int writebuffsel; /* which write buffer to use (from 940 side) */
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UINT16 writebuff0[2048]; /* list of writes to ym2612, 1024 for savestates, 1024 extra */
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UINT16 writebuff1[2048];
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int vstarts[8]; /* debug: number of starts from each of 8 vectors */
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int loopc; /* debug: main loop counter */
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int waitc; /* debug: wait loop counter */
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} _940_ctl_t;
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@ -1,8 +1,6 @@
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# you may or may not need to change this
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#devkit_path = x:/stuff/dev/devkitgp2x/
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devkit_path = /usr/local/devkitPro/devkitGP2X/
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lgcc_path = $(devkit_path)lib/gcc/arm-linux/4.0.3/
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CROSS = arm-linux-
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#CROSS = $(devkit_path)bin/arm-linux-
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@ -17,7 +15,7 @@ asm_ym2612 = 1
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#use_musashi = 1
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#up = 1
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DEFINC = -I../.. -I. -D__GP2X__ -D_UNZIP_SUPPORT # -DBENCHMARK
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DEFINC = -I../.. -I. -DARM -D__GP2X__ -D_UNZIP_SUPPORT # -DBENCHMARK
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COPT_COMMON = -static -s -O3 -ftracer -fstrength-reduce -Wall -funroll-loops -fomit-frame-pointer -fstrict-aliasing -ffast-math
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ifeq "$(profile)" "1"
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COPT_COMMON += -fprofile-generate
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@ -80,7 +78,7 @@ DEFINC += -D_USE_DRZ80
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OBJS += ../../cpu/DrZ80/drz80.o
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endif
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all: PicoDrive.gpe code940.bin
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all: PicoDrive.gpe
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PicoDrive.gpe : $(OBJS)
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@echo $@
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@ -92,15 +90,11 @@ ifeq "$(up)" "1"
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@cmd //C copy $@ \\\\10.0.1.2\\gp2x\\mnt\\sd\\games\\PicoDrive\\
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endif
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up: # up940
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up:
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@cp -v PicoDrive.gpe /mnt/gp2x/mnt/sd/games/PicoDrive/
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# @cmd //C copy PicoDrive.gpe \\\\10.0.1.2\\gp2x\\mnt\\sd\\games\\PicoDrive\\
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up940:
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@cp -v code940.bin /mnt/gp2x/mnt/sd/games/PicoDrive/
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# @cmd //C copy code940.bin \\\\10.0.1.2\\gp2x\\mnt\\sd\\games\\PicoDrive\\
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testrefr.gpe : test.o gp2x.o asmutils.o
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@echo $@
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@ -133,45 +127,13 @@ testrefr.gpe : test.o gp2x.o asmutils.o
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@make -C ../../cpu/Cyclone/proj -f Makefile.linux
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# stuff for 940 core
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# init, emu_control, emu
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OBJS940 += 940init.o 940.o 940ym2612.o
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# the asm code seems to be faster when run on 920, but not on 940 for some reason
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# OBJS940 += ../../Pico/sound/ym2612_asm.o
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# uClibc library code
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OBJS940 += uClibc/memset.o uClibc/s_floor.o uClibc/e_pow.o uClibc/e_sqrt.o uClibc/s_fabs.o
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OBJS940 += uClibc/s_scalbn.o uClibc/s_copysign.o uClibc/k_sin.o uClibc/k_cos.o uClibc/s_sin.o
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OBJS940 += uClibc/e_rem_pio2.o uClibc/k_rem_pio2.o uClibc/e_log.o uClibc/wrappers.o
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code940.bin : code940.gpe
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@echo $@
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@$(OBJCOPY) -O binary $< $@
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code940.gpe : $(OBJS940)
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@echo $@
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@$(LD) -static -e code940 -Ttext 0x0 $^ -L$(lgcc_path) -lgcc -o $@
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940ym2612.o : ../../Pico/sound/ym2612.c
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@echo $@
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@$(GCC) $(COPT_COMMON) -mtune=arm940t $(DEFINC) -DEXTERNAL_YM2612 -c $< -o $@
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# cleanup
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clean: clean_pd clean_940
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tidy: tidy_pd tidy_940
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clean_pd: tidy_pd
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clean: tidy
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@$(RM) PicoDrive.gpe
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tidy_pd:
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tidy:
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@$(RM) $(OBJS)
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# @make -C ../../cpu/Cyclone/proj -f Makefile.linux clean
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clean_940: tidy_940
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@$(RM) code940.bin
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tidy_940:
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@$(RM) code940.gpe $(OBJS940)
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clean_prof:
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find ../.. -name '*.gcno' -delete
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@ -190,10 +152,3 @@ usbjoy.o : usbjoy.c
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|||
@echo $<
|
||||
@$(GCC) $(COPT) $(DEFINC) -fno-profile-generate -c $< -o $@
|
||||
|
||||
uClibc/e_pow.o : uClibc/e_pow.c
|
||||
@echo $<
|
||||
@$(GCC) $(COPT) $(DEFINC) -fno-profile-generate -c $< -o $@
|
||||
|
||||
uClibc/e_sqrt.o : uClibc/e_sqrt.c
|
||||
@echo $<
|
||||
@$(GCC) $(COPT) $(DEFINC) -fno-profile-generate -c $< -o $@
|
||||
|
|
|
|||
|
|
@ -204,6 +204,10 @@ void gp2x_sound_write(void *buff, int len)
|
|||
write(sounddev, buff, len);
|
||||
}
|
||||
|
||||
void gp2x_sound_sync(void)
|
||||
{
|
||||
ioctl(sounddev, SOUND_PCM_SYNC, 0);
|
||||
}
|
||||
|
||||
void gp2x_sound_volume(int l, int r)
|
||||
{
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue