299 lines
7.2 KiB
C
299 lines
7.2 KiB
C
/*
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* This file is part of the libpayload project.
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*
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* Copyright (C) 2008 Advanced Micro Devices, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <libpayload.h>
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#include <pci.h>
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#include <video_console.h>
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#include <arch/msr.h>
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#include "font.h"
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/* This is the video mode that we're going to use for our VGA screen */
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static const struct mode {
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unsigned int pll;
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unsigned int hactive, hblankstart, hsyncstart;
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unsigned int hsyncend, hblankend, htotal;
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unsigned int vactive, vblankstart, vsyncstart;
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unsigned int vsyncend, vblankend, vtotal;
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unsigned int synccfg;
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} vga_mode = {
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.pll = 0x215D,
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.hactive = 640,
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.vactive = 400,
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.hblankstart = 640,
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.hsyncstart = 640 + 40,
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.hsyncend = 640 + 40 + 96,
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.hblankend = 640 + 40 + 96 + 24,
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.htotal = 640 + 40 + 96 + 24,
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.vblankstart = 400,
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.vsyncstart = 400 + 39,
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.vsyncend = 400 + 39 + 2,
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.vblankend = 400 + 39 + 2 + 9,
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.vtotal = 400 + 39 + 2 + 9,
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.synccfg = 0x300,
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};
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/* These are the color definitions for the 16 standard colors */
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static const unsigned int vga_colors[] = {
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(0x00 << 16) | (0x00 << 8) | 0x00,
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(0xAA << 16) | (0x00 << 8) | 0x00,
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(0x00 << 16) | (0xAA << 8) | 0x00,
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(0xAA << 16) | (0x55 << 8) | 0x00,
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(0x00 << 16) | (0x00 << 8) | 0xAA,
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(0xAA << 16) | (0x00 << 8) | 0xAA,
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(0x00 << 16) | (0xAA << 8) | 0xAA,
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(0xAA << 16) | (0xAA << 8) | 0xAA,
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(0x55 << 16) | (0x55 << 8) | 0x55,
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(0xFF << 16) | (0x55 << 8) | 0x55,
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(0x55 << 16) | (0xFF << 8) | 0x55,
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(0xFF << 16) | (0xFF << 8) | 0x55,
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(0x55 << 16) | (0x55 << 8) | 0xFF,
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(0xFF << 16) | (0x55 << 8) | 0xFF,
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(0x55 << 16) | (0xFF << 8) | 0xFF,
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(0xFF << 16) | (0xFF << 8) | 0xFF,
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};
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/* Addresses for the various components */
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static unsigned long dcaddr;
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static unsigned long vgaddr;
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static unsigned long gpaddr;
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static unsigned long fbaddr;
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#define DC (phys_to_virt(dcaddr))
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#define VG (phys_to_virt(vgaddr))
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#define GP (phys_to_virt(gpaddr))
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#define FB ((unsigned char *) phys_to_virt(fbaddr))
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static void init_video_mode(void)
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{
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unsigned int lo, hi, val;
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int i;
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/* Set the PLL */
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rdmsr(0x4c000015, lo, hi);
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hi = vga_mode.pll;
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lo &= ~0x1008000;
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lo |= 0x01;
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wrmsr(0x4c000015, lo, hi);
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udelay(100);
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for(i = 0; i < 1000; i++) {
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rdmsr(0x4c000015, lo, hi);
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if (lo & 0x2000000)
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break;
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}
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lo &= ~0x01;
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wrmsr(0x4c000015, lo, hi);
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rdmsr(0x48002001, lo, hi);
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lo &= ~0x38;
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wrmsr(0x48002001, lo, hi);
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writel(0x4758, DC + 0x00);
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val = readl(DC + 0x00);
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writel(0, DC + 0x10);
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writel(0, DC + 0x14);
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writel(0, DC + 0x18);
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/* Set up the default scaling */
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val = readl(DC + 0xD4);
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writel((0x4000 << 16) | 0x4000, DC + 0x90);
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writel(0, DC + 0x94);
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writel(val & ~0xf3040000, DC + 0xD4);
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/* Set up the compression (or lack thereof) */
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writel(vga_mode.hactive * vga_mode.vactive | 0x01, DC + 0x2C);
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val = readl(DC + 0x88);
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writel(val & ~0xC00, DC + 0x88);
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writel(0, DC + 0x8C);
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/* Set the pitch */
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writel(vga_mode.hactive >> 3, DC + 0x34);
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writel((vga_mode.hactive + 7) >> 3, DC + 0x30);
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/* Set up default watermarks */
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lo = 0xC0;
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wrmsr(0x80000011, lo, hi);
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/* Write the timings */
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writel((vga_mode.hactive - 1) | ((vga_mode.htotal - 1) << 16),
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DC + 0x40);
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writel((vga_mode.hblankstart - 1) | ((vga_mode.hblankend - 1) << 16),
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DC + 0x44);
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writel((vga_mode.hsyncstart - 1) | ((vga_mode.hsyncend - 1) << 16),
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DC + 0x48);
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writel((vga_mode.vactive - 1) | ((vga_mode.vtotal - 1) << 16),
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DC + 0x50);
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writel((vga_mode.vblankstart - 1) | ((vga_mode.vblankend - 1) << 16),
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DC + 0x54);
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writel((vga_mode.vsyncstart - 1) | ((vga_mode.vsyncend - 1) << 16),
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DC + 0x58);
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writel(((vga_mode.hactive - 1) << 16) | (vga_mode.vactive - 1),
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DC + 0x5C);
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/* Write the VG configuration */
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writel(0x290000F | vga_mode.synccfg, VG + 0x08);
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/* Turn on the dacs */
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val = readl(VG + 0x50);
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writel((val & ~0xC00) | 0x01, VG + 0x50);
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/* Set the framebuffer base */
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writel(fbaddr, DC + 0x84);
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/* Write the final configuration */
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writel(0xB000059, DC + 0x08);
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writel(0, DC + 0x0C);
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writel(0x2B601, DC + 0x04);
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}
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static void geodelx_set_palette(int entry, unsigned int color)
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{
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writel(entry, DC + 0x70);
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writel(color, DC + 0x74);
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}
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static void geodelx_scroll_up(void)
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{
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unsigned char *dst = FB;
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unsigned char *src = FB + font_height * vga_mode.hactive;
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int y;
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for(y = 0; y < vga_mode.vactive - font_height; y++) {
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memcpy(dst, src, vga_mode.hactive);
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dst += vga_mode.hactive;
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src += vga_mode.hactive;
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}
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for(; y < vga_mode.vactive; y++) {
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memset(dst, 0, vga_mode.hactive);
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dst += vga_mode.hactive;
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}
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}
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static void geodelx_clear(void)
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{
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int row;
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unsigned char *ptr = FB;
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for(row = 0; row < vga_mode.vactive; row++) {
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memset(ptr, 0, vga_mode.hactive);
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ptr += vga_mode.hactive;
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}
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}
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static void geodelx_putc(u8 row, u8 col, unsigned int ch)
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{
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unsigned char *dst;
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unsigned char bg = (ch >> 12) & 0xF;
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unsigned char fg = (ch >> 8) & 0xF;
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int x, y;
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dst = FB + ((row * font_height) * vga_mode.hactive);
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dst += (col * font_width);
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for(y = 0; y < font_height; y++) {
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for(x = font_width - 1; x >= 0; x--)
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dst[font_width - x] = font_glyph_filled(ch, x, y) ?
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fg : bg;
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dst += vga_mode.hactive;
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}
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}
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static int geodelx_init(void)
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{
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pcidev_t dev;
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int i;
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if (!pci_find_device(0x1022, 0x2081, &dev))
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return -1;
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fbaddr = pci_read_resource(dev, 0);
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gpaddr = pci_read_resource(dev, 1);
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dcaddr = pci_read_resource(dev, 2);
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vgaddr = pci_read_resource(dev, 3);
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font_init(vga_mode.hactive);
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init_video_mode();
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/* Set up the palette */
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for(i = 0; i < ARRAY_SIZE(vga_colors); i++) {
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geodelx_set_palette(i, vga_colors[i]);
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}
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geodelx_clear();
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return 0;
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}
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struct video_console geodelx_video_console = {
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.init = geodelx_init,
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.putc = geodelx_putc,
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.clear = geodelx_clear,
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.scroll_up = geodelx_scroll_up,
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/* TODO .get_cursor */
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/* TODO .set_cursor */
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/* TODO .enable_cursor */
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.columns = 80,
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.rows = 25
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};
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