* 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 MEMBASE (phys_to_virt(lib_sysinfo.ser_base))
+#define DIVISOR(x) (115200 / x)
#ifdef CONFIG_SERIAL_SET_SPEED
-#define DIVISOR (115200 / CONFIG_SERIAL_BAUD_RATE)
-#endif
+static void serial_io_hardware_init(int port, int speed, int word_bits, int parity, int stop_bits)
+{
+ unsigned char reg;
-void serial_init(void)
+ /* 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, port + 0x04);
+
+ /* Set the divisor latch. */
+ reg = inb(port + 0x03);
+ outb(reg | 0x80, port + 0x03);
+
+ /* 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, port + 0x03);
+}
+
+static void serial_mem_hardware_init(int port, int speed, int word_bits, int parity, int stop_bits)
{
-#ifdef CONFIG_SERIAL_SET_SPEED
unsigned char reg;
+ /* We will assume 8n1 for now. Does anyone use anything else these days? */
+
/* Disable interrupts. */
- outb(0, IOBASE + 0x01);
+ writeb(0, MEMBASE + 0x01);
/* Assert RTS and DTR. */
- outb(3, IOBASE + 0x04);
+ writeb(3, MEMBASE + 0x04);
/* Set the divisor latch. */
- reg = inb(IOBASE + 0x03);
- outb(reg | 0x80, IOBASE + 0x03);
+ reg = readb(MEMBASE + 0x03);
+ writeb(reg | 0x80, MEMBASE + 0x03);
/* Write the divisor. */
- outb(DIVISOR & 0xFF, IOBASE);
- outb(DIVISOR >> 8 & 0xFF, IOBASE + 1);
+ writeb(DIVISOR(speed) & 0xFF, MEMBASE);
+ writeb(DIVISOR(speed) >> 8 & 0xFF, MEMBASE + 1);
/* Restore the previous value of the divisor. */
- outb(reg &= ~0x80, IOBASE + 0x03);
+ writeb(reg & ~0x80, MEMBASE + 0x03);
+}
+#endif
+
+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)
+{
+ pcidev_t oxpcie_dev;
+ if (pci_find_device(0x1415, 0xc158, &oxpcie_dev)) {
+ lib_sysinfo.ser_base = pci_read_resource(oxpcie_dev, 0) + 0x1000;
+ } else {
+ lib_sysinfo.ser_base = 0;
+ }
+
+#ifdef CONFIG_SERIAL_SET_SPEED
+ if (lib_sysinfo.ser_base)
+ serial_mem_hardware_init(IOBASE, CONFIG_SERIAL_BAUD_RATE, 8, 0, 1);
+ else
+ serial_io_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)
+static void serial_io_putchar(unsigned int c)
{
+ c &= 0xff;
while ((inb(IOBASE + 0x05) & 0x20) == 0) ;
outb(c, IOBASE);
}
-int serial_havechar(void)
+static int serial_io_havechar(void)
{
return inb(IOBASE + 0x05) & 0x01;
}
-int serial_getchar(void)
+static int serial_io_getchar(void)
{
- while (!serial_havechar()) ;
+ while (!serial_io_havechar()) ;
return (int)inb(IOBASE);
}
+
+static void serial_mem_putchar(unsigned int c)
+{
+ c &= 0xff;
+ while ((readb(MEMBASE + 0x05) & 0x20) == 0) ;
+ writeb(c, MEMBASE);
+}
+
+static int serial_mem_havechar(void)
+{
+ return readb(MEMBASE + 0x05) & 0x01;
+}
+
+static int serial_mem_getchar(void)
+{
+ while (!serial_mem_havechar()) ;
+ return (int)readb(MEMBASE);
+}
+
+
+void serial_putchar(unsigned int c)
+{
+ if (lib_sysinfo.ser_base)
+ serial_mem_putchar(c);
+ else
+ serial_io_putchar(c);
+}
+
+int serial_havechar(void)
+{
+ if (lib_sysinfo.ser_base)
+ return serial_mem_havechar();
+ else
+ return serial_io_havechar();
+}
+
+int serial_getchar(void)
+{
+ if (lib_sysinfo.ser_base)
+ return serial_mem_getchar();
+ else
+ return serial_io_getchar();
+}
+
+/* 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(const 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);
+}
projects / coreboot.git / blobdiff