Add new Kconfig option to enable/disable beeps during LinuxBIOS boot.

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@274 f3766cd6-281f-0410-b1cd-43a5c92072e9

Kconfig

@@ -30,6 +30,13 @@ config LOCALVERSION
 	help
 	  Append an extra string to the end of the LinuxBIOS version.
 
+config BEEPS
+	bool "Enable beeps upon certain LinuxBIOS events."
+	depends EXPERT
+	default n
+	help
+	  Enable this option to make LinuxBIOS beep upon certain events.
+
 endmenu
 
 source mainboard/Kconfig

arch/x86/Makefile

@@ -62,8 +62,8 @@ $(obj)/linuxbios.bootblock: $(obj)/linuxbios.vpd $(obj)/stage0.init
 #
 
 STAGE0_CONSOLE_OBJ   = vtxprintf.o vsprintf.o console.o
-STAGE0_LIB_OBJ       = uart8250.o mem.o elfboot.o lar.o
-STAGE0_ARCH_X86_OBJ  = cachemain.o serial.o archelfboot.o
+STAGE0_LIB_OBJ       = uart8250.o mem.o elfboot.o lar.o delay.o
+STAGE0_ARCH_X86_OBJ  = cachemain.o serial.o archelfboot.o speaker.o udelay_io.o
 
 ifeq ($(CONFIG_CAR_TYPE_I586),y)
 	STAGE0_CAR_OBJ = stage0_i586.o

arch/x86/cachemain.c

@@ -22,6 +22,7 @@
 #include <console/console.h>
 #include <lar.h>
 #include <linuxbios_tables.h>
+#include <lib.h>
 
 /* these prototypes should go into headers */
 void uart_init(void);
@@ -47,7 +48,9 @@ static void stop_ap(void)
 static void enable_superio(void)
 {
 	// nothing yet
+	beep_short(); // FIXME
 	post_code(0xf1);
+	beep_long(); // FIXME
 }
 
 static void enable_rom(void)

arch/x86/speaker.c

@@ -0,0 +1,113 @@
+/*
+ * This file is part of the LinuxBIOS project.
+ *
+ * Copyright (C) 2007 Uwe Hermann <uwe@hermann-uwe.de>
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+/*
+ * Datasheet:
+ *  - Name: 82C54 CHMOS Programmable Interval Timer
+ *  - PDF: http://www.intel.com/design/archives/periphrl/docs/23124406.pdf
+ *  - Order number: 231244-006
+ */
+
+#include <arch/io.h>
+#include <lib.h>
+
+#define I82C54_CONTROL_WORD_REGISTER	0x43	/* Write-only. */
+
+#define I82C54_COUNTER0			0x40
+#define I82C54_COUNTER1			0x41
+#define I82C54_COUNTER2			0x42
+
+#define PC_SPEAKER_PORT			0x61
+
+/**
+ * Use the PC speaker to create a tone/sound of the specified frequency.
+ *
+ * The Intel 82C54 CHMOS Programmable Interval Timer (PIT) provides a
+ * superset of the functions of the original Intel 8253/8254 PIT. It has
+ * three programmable counters/timers (counter 0, 1, and 2). Counter 2 can
+ * be used to generate tones/sounds of various frequencies and duration.
+ *
+ * See also:
+ *  - http://en.wikipedia.org/wiki/Pc_speaker
+ *  - http://en.wikipedia.org/wiki/Intel_8253
+ *
+ * @param The frequency of the tone.
+ */
+void speaker_enable(u16 freq)
+{
+	/* Select counter 2. Read/write LSB first, then MSB. Use mode 3
+	   (square wave generator). Use a 16bit binary counter. */
+	outb(0xb6, I82C54_CONTROL_WORD_REGISTER);
+
+	/* Set the desired tone frequency. */
+	outb((u8)(freq & 0x00ff), I82C54_COUNTER2);	/* LSB. */
+	outb((u8)(freq >> 8), I82C54_COUNTER2);		/* MSB. */
+
+	/* Enable the PC speaker (set bits 0 and 1). */
+	outb(inb(PC_SPEAKER_PORT) | 0x03, PC_SPEAKER_PORT);
+}
+
+/**
+ * Disable the PC speaker.
+ */
+void speaker_disable(void)
+{
+	/* Disable the PC speaker (clear bits 0 and 1). */
+	outb(inb(PC_SPEAKER_PORT) & 0xfc, PC_SPEAKER_PORT);
+}
+
+/**
+ * Use the PC speaker to create a tone/beep of the specified frequency
+ * and duration.
+ *
+ * Wait for a short amount of time after the beep to make it distinguishable
+ * from the next beep (if any).
+ *
+ * @param The frequency of the tone/beep.
+ * @param The duration of the tone/beep in milliseconds.
+ */
+void speaker_tone(u16 freq, unsigned int duration)
+{
+	speaker_enable(freq);
+	mdelay(duration);
+	speaker_disable();
+	delay(10);
+}
+
+/**
+ * Use the PC speaker to create a short tone/beep.
+ */
+void beep_short(void)
+{
+#if defined(CONFIG_BEEPS) && (CONFIG_BEEPS == 1)
+	speaker_tone(1760, 500);	/* 1760 == note A6. */
+#endif
+}
+
+/**
+ * Use the PC speaker to create a long tone/beep.
+ */
+void beep_long(void)
+{
+#if defined(CONFIG_BEEPS) && (CONFIG_BEEPS == 1)
+	speaker_tone(1760, 2000);	/* 1760 == note A6. */
+#endif
+}
+

include/lib.h

@@ -27,4 +27,7 @@ void udelay(unsigned int usecs);
 void mdelay(unsigned int msecs);
 void delay(unsigned int secs);
 
+void beep_short(void);
+void beep_long(void);
+
 #endif