libpayload: The initial chunk of code writen by AMD

This is the initial chunk of code written by me and copyrighted
by AMD.  Includes everything but a few files that we pulled from
outside sources.

Signed-off-by: Jordan Crouse <jordan.crouse@amd.com>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3170 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 303 insertions, 0 deletions

diff --git a/payloads/libpayload/curses/keyboard.c b/payloads/libpayload/curses/keyboard.c
new file mode 100644
index 0000000000..6ab5dd0cf7
--- /dev/null
+++ b/payloads/libpayload/curses/keyboard.c
@@ -0,0 +1,303 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2007 Uwe Hermann <uwe@hermann-uwe.de>
+ * Copyright (C) 2008 Advanced Micro Devices, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ * This file handles reading keystrokes from serial and the console
+ * and "cooking" them so that they are correct for curses.
+ * Also, implement key related functions (mainly wgetch)
+ *
+ * TODO:
+ * Actually cook the serial (handle special keys)
+ */
+
+#include "local.h"
+
+/* ============== Serial ==================== */
+
+/* FIXME:  Cook the serial correctly */
+
+static int cook_serial(unsigned char ch)
+{
+	return (int) ch;
+}
+
+/* ================ Keyboard ================ */
+
+/* Scancode macros */
+
+#define DOWN(_c) (0x80 | (_c))
+#define UP(_c) (_c)
+
+#define ISDOWN(_c) ((_c) & 0x80)
+#define ISUP(_c) (!ISDOWN((_c)))
+
+#define SCANCODE(_c) ((_c) & ~0x80)
+
+/* Scancode definitions for the modifiers */
+
+#define SCANCODE_RSHIFT   0x36
+#define SCANCODE_LSHIFT   0x2a
+#define SCANCODE_CAPSLOCK 0x3a
+#define SCANCODE_LALT     0x38
+#define SCANCODE_LCTRL    0x1d
+
+/* Modifier flags */
+
+#define SHIFT_MODIFIER    0x1
+#define CAPSLOCK_MODIFIER 0x2
+#define ALT_MODIFIER      0x4
+#define CTRL_MODIFIER     0x8
+
+#define CTRL(_c) (_c & 0x1f)
+
+struct {
+	int normal;
+	int shift;
+} scancode_map[] = {
+	{ },
+	{ CTRL('['), CTRL('[')}, 
+	{ '1', '!' },
+	{ '2', '@' },
+	{ '3', '#' },
+	{ '4', '$' },
+	{ '5', '%' },
+	{ '6', '^' },
+	{ '7', '&' },
+	{ '8', '*' },
+	{ '9', '(' },
+	{ '0', ')' },
+	{ '-', '_' },
+	{ '=', '+' },
+	{ KEY_BACKSPACE, KEY_BACKSPACE},
+	{ CTRL('I' ), KEY_BTAB },          /* 0x0F */
+	{ 'q', 'Q' },
+	{ 'w', 'W' },
+	{ 'e', 'E' },
+	{ 'r', 'R' },
+	{ 't', 'T' },
+	{ 'y', 'Y' },
+	{ 'u', 'U' },
+	{ 'i', 'I' },
+	{ 'o', 'O' },
+	{ 'p', 'P' },
+	{ '[', '{' },
+	{ ']', '{' },
+	{ KEY_ENTER, KEY_ENTER },
+	{ 0 , 0 },
+	{ 'a', 'A' },
+	{ 's', 'S' },                    /* 0x1F */
+	{ 'd', 'D' },
+	{ 'f', 'F' },
+	{ 'g', 'G' },
+	{ 'h', 'H' },
+	{ 'j', 'J' },
+	{ 'k', 'K' },
+	{ 'l', 'L' },
+	{ ';', ':' },
+	{ '\'', '\"' },
+	{ '`', '~', },
+	{ 0, 0 },
+	{ '\\', '|' },
+	{ 'z', 'Z' },
+	{ 'x', 'X' },
+	{ 'c', 'C' },
+	{ 'v', 'V' },                   /* 0x2F */
+	{ 'b', 'B' },
+	{ 'n', 'N' },
+	{ 'm', 'M' },
+	{ ',', '<'},
+	{ '.', '>' },
+	{ '/', '?' },
+	{ 0, 0 },                       /* RSHIFT */
+	{ '*', '*' },
+	{ 0, 0 },                       /* LALT */
+	{ ' ', ' ' },                   /* Space */
+	{ 0, 0 },                       /* Capslock */
+	{ KEY_F(1), KEY_F(1) },
+	{ KEY_F(2), KEY_F(2) },
+	{ KEY_F(3), KEY_F(3) },
+	{ KEY_F(4), KEY_F(4) },
+	{ KEY_F(5), KEY_F(5) },         /* 0x3F */
+	{ KEY_F(6), KEY_F(6) },
+	{ KEY_F(7), KEY_F(7) },
+	{ KEY_F(8), KEY_F(8) },
+	{ KEY_F(9), KEY_F(9) },
+	{ KEY_F(10), KEY_F(10) },
+	{ 0, 0 },                      /* Numlock */
+	{ 0, 0 },                      /* Scroll lock */
+	{ KEY_HOME, KEY_HOME },
+	{ KEY_UP,   KEY_UP },
+	{ KEY_PPAGE, KEY_PPAGE },
+	{ '-',      '-' },
+	{ KEY_LEFT, KEY_LEFT },
+	{ 0,        0 },
+	{ KEY_RIGHT, KEY_RIGHT },
+	{ '-',       '-' },
+	{ KEY_END,  KEY_END },         /* 0x4F */
+	{ KEY_DOWN, KEY_DOWN },
+	{ KEY_NPAGE, KEY_NPAGE },
+	{ KEY_IC,    KEY_IC },
+	{ KEY_DC,    KEY_DC },
+	{ 0, 0 },                     /* sysreq */
+	{ 0, 0 },
+	{ KEY_F(11), KEY_F(11) },
+	{ KEY_F(12), KEY_F(12) },
+};
+
+static int cook_scancodes(unsigned char code)
+{
+	static int modifiers = 0;
+	int ch = 0,  sc, shift;
+
+	switch(code) {
+	case DOWN(SCANCODE_RSHIFT):
+	case DOWN(SCANCODE_LSHIFT):
+		modifiers |= SHIFT_MODIFIER;
+		return 0;
+
+	case UP(SCANCODE_RSHIFT):
+	case UP(SCANCODE_LSHIFT):
+		modifiers &= ~SHIFT_MODIFIER;
+		return 0;
+
+	case UP(SCANCODE_CAPSLOCK):
+		if (modifiers & CAPSLOCK_MODIFIER)
+			modifiers &= ~CAPSLOCK_MODIFIER;
+		else
+			modifiers |= CAPSLOCK_MODIFIER;
+		return 0;
+
+	case DOWN(SCANCODE_LALT):
+		modifiers |= ALT_MODIFIER;
+		return 0;
+
+	case UP(SCANCODE_LALT):
+		modifiers &= ~ALT_MODIFIER;
+		return 0;
+
+	case DOWN(SCANCODE_LCTRL):
+		modifiers |= CTRL_MODIFIER;
+		return 0;
+
+	case UP(SCANCODE_LCTRL):
+		modifiers &= ~CTRL_MODIFIER;
+		return 0;
+	}
+
+	/* Only process keys on an upstroke */
+
+	if (!ISUP(code))
+		return 0;
+
+	sc = SCANCODE(code);
+
+	if (sc == 0 || sc > 0x59)
+		return ERR;
+
+	shift = (modifiers & SHIFT_MODIFIER) ^ (modifiers & CAPSLOCK_MODIFIER);
+
+	ch = shift ? scancode_map[sc].shift : scancode_map[sc].normal;
+
+	if (modifiers & CTRL_MODIFIER)
+		ch = (ch >= 0x3F && ch <= 0x5F) ? CTRL(ch) : 0;
+
+	return ch;
+}
+
+static int curses_getchar(int delay) {
+
+	unsigned char c = 0;
+	int ret;
+
+	do {
+		if (curses_flags & F_ENABLE_CONSOLE)
+			c = inb(0x64);
+
+		if ((c & 1) == 0) {
+
+			if ((curses_flags & F_ENABLE_SERIAL) &&
+			serial_havechar()) {
+				c = serial_getchar();
+				return cook_serial(c);
+			}
+
+			if (!delay)
+				break;
+		}
+
+		c = inb(0x60);
+
+		ret = cook_scancodes(c);
+
+		if (ret != 0) {
+			return ret;
+		 }
+
+	} while(1);
+
+	return ERR;
+}
+
+/* === Public functions === */
+
+int wgetch(WINDOW *win)
+{
+	return curses_getchar(win->_delay);
+}
+
+int nodelay(WINDOW *win, NCURSES_BOOL flag)
+{
+	win->_delay = flag ? 0 : -1;
+}
+
+#ifdef CONFIG_VGA_CONSOLE
+void curses_enable_vga(int state)
+{
+	if (state)
+		curses_flags |= F_ENABLE_CONSOLE;
+	else
+		curses_flags &= ~F_ENABLE_CONSOLE;
+}
+#else
+void curses_enable_vga(int state) { }
+#endif
+
+#ifdef CONFIG_SERIAL_CONSOLE
+void curses_enable_serial(int state)
+{
+	if (state)
+		curses_flags |= F_ENABLE_SERIAL;
+	else
+		curses_flags &= ~F_ENABLE_SERIAL;
+}
+#else
+void curses_enable_serial(int state) { }
+#endif
+