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/* |
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* Copyright (C) 2003-2005 Anders Gavare. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* |
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* $Id: ps2_bios.c,v 1.29 2005/02/18 07:04:10 debug Exp $ |
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* |
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* Playstation 2 SIFBIOS emulation. |
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*/ |
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|
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <sys/types.h> |
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#include <sys/time.h> |
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#include <sys/resource.h> |
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|
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#include "console.h" |
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#include "cpu.h" |
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#include "cpu_mips.h" |
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#include "machine.h" |
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#include "misc.h" |
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|
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|
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extern int quiet_mode; |
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|
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|
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/* |
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* playstation2_sifbios_emul(): |
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* |
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* SIFBIOS calls: |
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* |
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* 0 getver() |
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* 1 halt(int mode) |
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* 2 setdve(int mode) |
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* 3 putchar(int ch) |
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* 4 getchar() |
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* 16 dma_init() |
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* 17 dma_exit() |
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* 32 cmd_init() |
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* 33 cmd_exit() |
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*/ |
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int playstation2_sifbios_emul(struct cpu *cpu) |
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{ |
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int callnr; |
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|
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callnr = cpu->cd.mips.gpr[MIPS_GPR_A0]; |
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|
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switch (callnr) { |
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case 0: /* getver() */ |
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cpu->cd.mips.gpr[MIPS_GPR_V0] = 0x200; /* TODO */ |
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break; |
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case 1: /* halt(int mode) */ |
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debug("[ SIFBIOS halt(0x%llx) ]\n", |
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(long long)cpu->cd.mips.gpr[MIPS_GPR_A1]); |
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cpu->running = 0; |
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cpu->dead = 1; |
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break; |
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case 2: /* setdve(int mode) */ |
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debug("[ SIFBIOS setdve(0x%llx) ]\n", |
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(long long)cpu->cd.mips.gpr[MIPS_GPR_A1]); |
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break; |
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case 3: /* putchar(int ch) */ |
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/* debug("[ SIFBIOS putchar(0x%x) ]\n", |
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(char)cpu->cd.mips.gpr[MIPS_GPR_A1]); */ |
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console_putchar(cpu->machine->main_console_handle, |
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cpu->cd.mips.gpr[MIPS_GPR_A1]); |
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break; |
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case 4: /* getchar() */ |
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/* This is untested. TODO */ |
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/* debug("[ SIFBIOS getchar() ]\n"; */ |
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cpu->cd.mips.gpr[MIPS_GPR_V0] = 0; |
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if (console_charavail(cpu->machine->main_console_handle)) |
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cpu->cd.mips.gpr[MIPS_GPR_V0] = console_readchar( |
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cpu->machine->main_console_handle); |
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break; |
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case 16: /* dma_init() */ |
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debug("[ SIFBIOS dma_init() ]\n"); |
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cpu->cd.mips.gpr[MIPS_GPR_V0] = 0; /* TODO */ |
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break; |
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case 17: /* dma_exit() */ |
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debug("[ SIFBIOS dma_exit() ]\n"); |
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break; |
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case 32: /* cmd_init() */ |
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debug("[ SIFBIOS cmd_init() ]\n"); |
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cpu->cd.mips.gpr[MIPS_GPR_V0] = 0; /* TODO */ |
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break; |
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case 33: /* cmd_exit() */ |
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debug("[ SIFBIOS cmd_exit() ]\n"); |
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break; |
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case 48: |
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debug("[ SIFBIOS rpc_init(): TODO ]\n"); |
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cpu->cd.mips.gpr[MIPS_GPR_V0] = 0; /* TODO */ |
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break; |
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case 49: |
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debug("[ SIFBIOS rpc_exit(): TODO ]\n"); |
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cpu->cd.mips.gpr[MIPS_GPR_V0] = 0; /* TODO */ |
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break; |
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case 64: |
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fatal("[ SIFBIOS SBR_IOPH_INIT(0x%x,0x%x,0x%x): TODO ]\n", |
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(int)cpu->cd.mips.gpr[MIPS_GPR_A1], |
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(int)cpu->cd.mips.gpr[MIPS_GPR_A2], |
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(int)cpu->cd.mips.gpr[MIPS_GPR_A3]); |
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|
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/* |
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* This is really really ugly: TODO |
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* |
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* Linux and NetBSD seem to work, but it's an ugly hack. |
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* This should really be a callback thingy... |
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* |
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* NetBSD has a done-word which should be set to 1. |
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* Linux has one done-word which should be set to 1, and |
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* one which should be set to 0. |
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* |
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* The code as it is right now probably overwrites stuff in |
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* memory that shouldn't be touched. Not good. |
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* |
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* Linux: err = sbios_rpc(SBR_IOPH_INIT, NULL, &result); |
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* err should be 0 (just as NetBSD), |
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* and result should be set to 0 as well. |
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*/ |
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{ |
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uint32_t tmpaddr; |
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|
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tmpaddr = load_32bit_word(cpu, |
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cpu->cd.mips.gpr[MIPS_GPR_A1] + 0); |
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fatal(" +0: %08x\n", tmpaddr); |
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tmpaddr = load_32bit_word(cpu, |
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cpu->cd.mips.gpr[MIPS_GPR_A1] + 4); |
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fatal(" +4: %08x\n", tmpaddr); |
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tmpaddr = load_32bit_word(cpu, |
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cpu->cd.mips.gpr[MIPS_GPR_A1] + 8); |
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fatal(" +8: %08x\n", tmpaddr); |
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tmpaddr = load_32bit_word(cpu, |
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cpu->cd.mips.gpr[MIPS_GPR_A1] + 12); |
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fatal(" +12: %08x\n", tmpaddr); |
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|
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/* TODO: This is probably netbsd specific */ |
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tmpaddr = load_32bit_word(cpu, |
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cpu->cd.mips.gpr[MIPS_GPR_A1] + 12); |
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fatal("tmpaddr 1 = 0x%08x\n", tmpaddr); |
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|
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/* "done" word for NetBSD: */ |
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store_32bit_word(cpu, tmpaddr, 1); |
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/* "done" word A for Linux: */ |
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store_32bit_word(cpu, tmpaddr + 4, 1); |
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/* "done" word B for Linux: */ |
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store_32bit_word(cpu, |
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cpu->cd.mips.gpr[MIPS_GPR_A1] + 0, 0); |
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} |
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cpu->cd.mips.gpr[MIPS_GPR_V0] = 0; |
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break; |
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case 65: |
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fatal("[ SIFBIOS alloc iop heap(0x%x) ]\n", |
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(int)cpu->cd.mips.gpr[MIPS_GPR_A1]); |
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|
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/* |
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* Linux uses this to allocate "heap" for the OHCI USB |
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* controller. |
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* |
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* TODO: This naïve implementation does not allow for a |
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* "free iop heap" function: :-/ |
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*/ |
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|
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{ |
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uint32_t tmpaddr; |
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static uint32_t return_addr = 0x1000; |
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/* 0xbc000000; */ |
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uint32_t size; |
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|
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tmpaddr = load_32bit_word(cpu, |
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cpu->cd.mips.gpr[MIPS_GPR_A1] + 0); |
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fatal(" +0: %08x (result should be placed here)\n", |
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tmpaddr); |
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tmpaddr = load_32bit_word(cpu, |
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cpu->cd.mips.gpr[MIPS_GPR_A1] + 4); |
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fatal(" +4: %08x (*arg)\n", tmpaddr); |
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size = load_32bit_word(cpu, tmpaddr + 0); |
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fatal(" size = %08x\n", size); |
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tmpaddr = load_32bit_word(cpu, |
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cpu->cd.mips.gpr[MIPS_GPR_A1] + 8); |
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fatal(" +8: %08x (*func (void *, int))\n", tmpaddr); |
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tmpaddr = load_32bit_word(cpu, |
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cpu->cd.mips.gpr[MIPS_GPR_A1] + 12); |
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fatal(" +12: %08x (*para)\n", tmpaddr); |
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|
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/* TODO: This is probably netbsd specific */ |
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tmpaddr = load_32bit_word(cpu, |
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cpu->cd.mips.gpr[MIPS_GPR_A1] + 12); |
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fatal("tmpaddr 1 = 0x%08x\n", tmpaddr); |
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|
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/* "done" word for NetBSD: */ |
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store_32bit_word(cpu, tmpaddr, 1); |
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/* "done" word A for Linux: */ |
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store_32bit_word(cpu, tmpaddr + 4, 1); |
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|
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/* Result: */ |
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store_32bit_word(cpu, |
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cpu->cd.mips.gpr[MIPS_GPR_A1] + 0, return_addr); |
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|
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return_addr += size; |
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/* Round up to next page: */ |
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return_addr += 4095; |
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return_addr &= ~4095; |
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} |
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cpu->cd.mips.gpr[MIPS_GPR_V0] = 0; |
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break; |
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default: |
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quiet_mode = 0; |
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cpu_register_dump(cpu->machine, cpu, 1, 0x1); |
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printf("\n"); |
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fatal("Playstation 2 SIFBIOS emulation: " |
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"unimplemented call nr 0x%x\n", callnr); |
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cpu->running = 0; |
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cpu->dead = 1; |
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} |
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|
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return 1; |
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} |
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