* This file is part of the libpayload project.
*
* Copyright (C) 2008 Advanced Micro Devices, Inc.
+ * Copyright (C) 2008 Ulf Jordan <jordan@chalmers.se>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* SUCH DAMAGE.
*/
+#include <libpayload-config.h>
#include <libpayload.h>
-#include <sysinfo.h>
#define IOBASE lib_sysinfo.ser_ioport
+#define DIVISOR(x) (115200 / x)
-#ifdef CONFIG_SERIAL_SET_SPEED
-#define DIVISOR (115200 / CONFIG_SERIAL_BAUD_RATE)
-#endif
-
-void serial_init(void)
-{
-#ifdef CONFIG_SERIAL_SET_SPEED
+void serial_hardware_init(int port, int speed, int word_bits, int parity, int stop_bits)
+{
unsigned char reg;
- /* Disable interrupts */
- outb(0, IOBASE + 0x01);
+ /* We will assume 8n1 for now. Does anyone use anything else these days? */
+
+ /* Disable interrupts. */
+ outb(0, port + 0x01);
- /* Assert RTS and DTR */
- outb(3, IOBASE + 0x04);
+ /* Assert RTS and DTR. */
+ outb(3, port + 0x04);
- /* Set the divisor latch */
- reg = inb(IOBASE + 0x03);
- outb(reg | 0x80, IOBASE + 0x03);
+ /* Set the divisor latch. */
+ reg = inb(port + 0x03);
+ outb(reg | 0x80, port + 0x03);
- /* Write the divisor */
- outb(DIVISOR & 0xFF, IOBASE);
- outb(DIVISOR >> 8 & 0xFF, IOBASE + 1);
+ /* Write the divisor. */
+ outb(DIVISOR(speed) & 0xFF, port);
+ outb(DIVISOR(speed) >> 8 & 0xFF, port + 1);
- /* Restore the previous value of the divisor */
- outb(reg &= ~0x80, IOBASE + 0x03);
+ /* Restore the previous value of the divisor. */
+ outb(reg & ~0x80, port + 0x03);
+}
+
+static struct console_input_driver consin = {
+ .havekey = serial_havechar,
+ .getchar = serial_getchar
+};
+
+static struct console_output_driver consout = {
+ .putchar = serial_putchar
+};
+
+void serial_init(void)
+{
+#ifdef CONFIG_SERIAL_SET_SPEED
+ serial_hardware_init(IOBASE, CONFIG_SERIAL_BAUD_RATE, 8, 0, 1);
#endif
+ console_add_input_driver(&consin);
+ console_add_output_driver(&consout);
}
-
-void serial_putchar(unsigned char c)
+
+void serial_putchar(unsigned int c)
{
- while((inb(IOBASE + 0x05) & 0x20) == 0);
+ c &= 0xff;
+ while ((inb(IOBASE + 0x05) & 0x20) == 0) ;
outb(c, IOBASE);
}
int serial_getchar(void)
{
- while (!serial_havechar());
- return (int) inb(IOBASE);
+ while (!serial_havechar()) ;
+ return (int)inb(IOBASE);
+}
+
+/* These are thinly veiled vt100 functions used by curses */
+
+#define VT100_CLEAR "\e[H\e[J"
+/* These defines will fail if you use bold and reverse at the same time.
+ * Switching off one of them will switch off both. tinycurses knows about
+ * this and does the right thing.
+ */
+#define VT100_SBOLD "\e[1m"
+#define VT100_EBOLD "\e[m"
+#define VT100_SREVERSE "\e[7m"
+#define VT100_EREVERSE "\e[m"
+#define VT100_CURSOR_ADDR "\e[%d;%dH"
+#define VT100_CURSOR_ON "\e[?25l"
+#define VT100_CURSOR_OFF "\e[?25h"
+/* The following smacs/rmacs are actually for xterm; a real vt100 has
+ enacs=\E(B\E)0, smacs=^N, rmacs=^O. */
+#define VT100_SMACS "\e(0"
+#define VT100_RMACS "\e(B"
+/* A vt100 doesn't do color, setaf/setab below are from xterm-color. */
+#define VT100_SET_COLOR "\e[3%d;4%dm"
+
+static void serial_putcmd(char *str)
+{
+ while(*str)
+ serial_putchar(*(str++));
+}
+
+void serial_clear(void)
+{
+ serial_putcmd(VT100_CLEAR);
+}
+
+void serial_start_bold(void)
+{
+ serial_putcmd(VT100_SBOLD);
+}
+
+void serial_end_bold(void)
+{
+ serial_putcmd(VT100_EBOLD);
+}
+
+void serial_start_reverse(void)
+{
+ serial_putcmd(VT100_SREVERSE);
+}
+
+void serial_end_reverse(void)
+{
+ serial_putcmd(VT100_EREVERSE);
+}
+
+void serial_start_altcharset(void)
+{
+ serial_putcmd(VT100_SMACS);
+}
+
+void serial_end_altcharset(void)
+{
+ serial_putcmd(VT100_RMACS);
+}
+
+/**
+ * Set the foreground and background colors on the serial console.
+ *
+ * @param fg Foreground color number.
+ * @param bg Background color number.
+ */
+void serial_set_color(short fg, short bg)
+{
+ char buffer[32];
+ snprintf(buffer, sizeof(buffer), VT100_SET_COLOR, fg, bg);
+ serial_putcmd(buffer);
+}
+
+void serial_set_cursor(int y, int x)
+{
+ char buffer[32];
+ snprintf(buffer, sizeof(buffer), VT100_CURSOR_ADDR, y + 1, x + 1);
+ serial_putcmd(buffer);
+}
+
+void serial_cursor_enable(int state)
+{
+ if (state)
+ serial_putcmd(VT100_CURSOR_ON);
+ else
+ serial_putcmd(VT100_CURSOR_OFF);
}