/* * This file is part of the coreboot project. * * Copyright (C) 2009 Libra Li <libra.li@technexion.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #ifdef __PRE_RAM__ #include <arch/cpu.h> #include "southbridge/amd/sb600/sb600.h" #else #include <arch/io.h> #include <device/pci.h> #include <device/pci_ids.h> #include "southbridge/amd/sb600/sb600.h" #include <delay.h> #endif /* __PRE_RAM__ */ #include "speaker.h" void speaker_init(uint8_t time) { /* SB600 RRG. * Options_0 - RW - 8 bits - [PM_Reg: 60h]. * SpkrEn, bit[5]=1b, Setting this bit will configure GPIO2 to be speaker output. */ #ifdef __PRE_RAM__ pmio_write(0x60, (pmio_read(0x60) | (1<<5))); #else pm_iowrite(0x60, (pm_ioread(0x60) | (1<<5))); #endif /* __PRE_RAM__ */ /* SB600 RRG. * Tmr1CntrlWord - RW - 8 bits - [IO_Reg: 43h]. * ModeSelect, bit[3:1]=011b, Square wave output. * CmmandSelect, bit[5:4]=11b, Read/write least, and then most significant byte. * CounterSelect, bit[7:6]=10b, Select counter 2. */ outb(0xb6, 0x43); /* SB600 RRG. * TimerCh2- RW - 8 bits - [IO_Reg: 42h]. */ outb(time, 0x42); } void speaker_on_nodelay(void) { /* SB600 RRG. * Nmi_Status - RW - 8 bits - [IO_Reg: 61h]. * SpkrEnable, bit[0]=1b, Enable counter 2 * SpkrTmrEnable, bit[1]=1b, Speaker timer on */ outb(inb(0x61) | 0x03, 0x61); } void speaker_on_delay(void) { speaker_on_nodelay(); mdelay(100); } void speaker_off_nodelay(void) { /* SB600 RRG. * Nmi_Status - RW - 8 bits - [IO_Reg: 61h]. * SpkrEnable, bit[0]=0b, Disable counter 2 * SpkrTmrEnable, bit[1]=0b, Speaker timer off */ outb(inb(0x61) & ~0x03, 0x61); } void speaker_off_delay(void) { speaker_off_nodelay(); mdelay(100); }