From b700254aa5150023a13902adbe31839ec4f926cb Mon Sep 17 00:00:00 2001 From: Stefan Reinauer Date: Thu, 25 Mar 2010 18:56:26 +0000 Subject: Add coreboot framebuffer support to libpayload Signed-off-by: Stefan Reinauer Acked-by: Patrick Georgi git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5295 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1 --- payloads/libpayload/drivers/video/corebootfb.c | 268 +++++++++++++++++++++++++ 1 file changed, 268 insertions(+) create mode 100644 payloads/libpayload/drivers/video/corebootfb.c (limited to 'payloads/libpayload/drivers/video/corebootfb.c') diff --git a/payloads/libpayload/drivers/video/corebootfb.c b/payloads/libpayload/drivers/video/corebootfb.c new file mode 100644 index 0000000000..190d3f0d4b --- /dev/null +++ b/payloads/libpayload/drivers/video/corebootfb.c @@ -0,0 +1,268 @@ +/* + * This file is part of the libpayload project. + * + * Copyright (C) 2008 Advanced Micro Devices, Inc. + * Copyright (C) 2010 coresystems GmbH + * + * 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. + */ + +#include +#include +#include +#include +#include +#include "font8x16.h" + +struct video_console coreboot_video_console; + +static unsigned int cursor_x = 0, cursor_y = 0, cursor_en = 0; + +/* color definitions for the 16 standard colors */ + +#define VGA_COLOR_DEFAULT 7 +static const u32 vga_colors[] = { + // BLUE | GREEN | RED + (0x00 << 16) | (0x00 << 8) | 0x00, + (0xAA << 16) | (0x00 << 8) | 0x00, + (0x00 << 16) | (0xAA << 8) | 0x00, + (0xAA << 16) | (0x55 << 8) | 0x00, + (0x00 << 16) | (0x00 << 8) | 0xAA, + (0xAA << 16) | (0x00 << 8) | 0xAA, + (0x00 << 16) | (0xAA << 8) | 0xAA, + (0xAA << 16) | (0xAA << 8) | 0xAA, + (0x55 << 16) | (0x55 << 8) | 0x55, + (0xFF << 16) | (0x55 << 8) | 0x55, + (0x55 << 16) | (0xFF << 8) | 0x55, + (0xFF << 16) | (0xFF << 8) | 0x55, + (0x55 << 16) | (0x55 << 8) | 0xFF, + (0xFF << 16) | (0x55 << 8) | 0xFF, + (0x55 << 16) | (0xFF << 8) | 0xFF, + (0xFF << 16) | (0xFF << 8) | 0xFF, +}; + +/* Addresses for the various components */ +static unsigned long fbinfo; +static unsigned long fbaddr; +static unsigned long chars; + +#define FI ((struct cb_framebuffer *) phys_to_virt(fbinfo)) +#define FB ((unsigned char *) phys_to_virt(fbaddr)) +#define CHARS ((unsigned short *) phys_to_virt(chars)) + +static void corebootfb_scroll_up(void) +{ + unsigned char *dst = FB; + unsigned char *src = FB + (FI->bytes_per_line * FONT_HEIGHT); + int y; + + /* Scroll all lines up */ + for(y = 0; y < FI->y_resolution - FONT_HEIGHT; y++) { + memcpy(dst, src, FI->x_resolution * (FI->bits_per_pixel >> 3)); + + dst += FI->bytes_per_line; + src += FI->bytes_per_line; + } + + /* Erase last line */ + dst = FB + (FI->y_resolution - FONT_HEIGHT) * FI->bytes_per_line; + + for(; y < FI->y_resolution; y++) { + memset(dst, 0, FI->x_resolution * (FI->bits_per_pixel >> 3)); + dst += FI->bytes_per_line; + } + + /* And update the char buffer */ + dst = (unsigned char *) CHARS; + src = (unsigned char *) (CHARS + coreboot_video_console.columns); + memcpy(dst, src, coreboot_video_console.columns * + (coreboot_video_console.rows - 1) * 2); + int column; + for (column = 0; column < coreboot_video_console.columns; column++) + CHARS[(coreboot_video_console.rows - 1) * coreboot_video_console.columns + column] = (VGA_COLOR_DEFAULT << 8); + + cursor_y--; +} + +static void corebootfb_clear(void) +{ + int row, column; + unsigned char *ptr = FB; + + /* Clear the screen */ + for(row = 0; row < FI->y_resolution; row++) { + memset(ptr, 0, FI->x_resolution * (FI->bits_per_pixel >> 3)); + ptr += FI->bytes_per_line; + } + + /* And update the char buffer */ + for(row = 0; row < coreboot_video_console.rows; row++) + for (column = 0; column < coreboot_video_console.columns; column++) + CHARS[row * coreboot_video_console.columns + column] = (VGA_COLOR_DEFAULT << 8); +} + +static void corebootfb_putchar(u8 row, u8 col, unsigned int ch) +{ + unsigned char *dst; + unsigned char *glyph = font8x16 + ((ch & 0xFF) * FONT_HEIGHT); + + unsigned char bg = (ch >> 12) & 0xF; + unsigned char fg = (ch >> 8) & 0xF; + u32 fgval = 0, bgval = 0; + u16 *dst16; + u32 *dst32; + + int x, y; + + if (FI->bits_per_pixel > 8) { + bgval = ((((vga_colors[bg] >> 0) & 0xff) >> (8 - FI->blue_mask_size)) << FI->blue_mask_pos) | + ((((vga_colors[bg] >> 8) & 0xff) >> (8 - FI->green_mask_size)) << FI->green_mask_pos) | + ((((vga_colors[bg] >> 16) & 0xff) >> (8 - FI->red_mask_size)) << FI->red_mask_pos); + fgval = ((((vga_colors[fg] >> 0) & 0xff) >> (8 - FI->blue_mask_size)) << FI->blue_mask_pos) | + ((((vga_colors[fg] >> 8) & 0xff) >> (8 - FI->green_mask_size)) << FI->green_mask_pos) | + ((((vga_colors[fg] >> 16) & 0xff) >> (8 - FI->red_mask_size)) << FI->red_mask_pos); + } + + + dst = FB + ((row * FONT_HEIGHT) * FI->bytes_per_line); + dst += (col * FONT_WIDTH * (FI->bits_per_pixel >> 3)); + + for(y = 0; y < FONT_HEIGHT; y++) { + for(x = FONT_WIDTH - 1; x >= 0; x--) { + + switch (FI->bits_per_pixel) { + case 8: /* Indexed */ + dst[(FONT_WIDTH - x) * (FI->bits_per_pixel >> 3)] = (*glyph & (1 << x)) ? fg : bg; + break; + case 16: /* 16 bpp */ + dst16 = (u16 *)(dst + (FONT_WIDTH - x) * (FI->bits_per_pixel >> 3)); + *dst16 = (*glyph & (1 << x)) ? fgval : bgval; + break; + case 24: /* 24 bpp */ + if (*glyph & (1 << x)) { + dst[(FONT_WIDTH - x) * (FI->bits_per_pixel >> 3) + 0] = fgval & 0xff; + dst[(FONT_WIDTH - x) * (FI->bits_per_pixel >> 3) + 1] = (fgval >> 8) & 0xff; + dst[(FONT_WIDTH - x) * (FI->bits_per_pixel >> 3) + 2] = (fgval >> 16) & 0xff; + } else { + dst[(FONT_WIDTH - x) * (FI->bits_per_pixel >> 3) + 0] = bgval & 0xff; + dst[(FONT_WIDTH - x) * (FI->bits_per_pixel >> 3) + 1] = (bgval >> 8) & 0xff; + dst[(FONT_WIDTH - x) * (FI->bits_per_pixel >> 3) + 2] = (bgval >> 16) & 0xff; + } + break; + case 32: /* 32 bpp */ + dst32 = (u32 *)(dst + (FONT_WIDTH - x) * (FI->bits_per_pixel >> 3)); + *dst32 = (*glyph & (1 << x)) ? fgval : bgval; + break; + } + } + + dst += FI->bytes_per_line; + glyph++; + } +} + +static void corebootfb_putc(u8 row, u8 col, unsigned int ch) +{ + CHARS[row * coreboot_video_console.columns + col] = ch; + corebootfb_putchar(row, col, ch); +} + +static void corebootfb_update_cursor(void) +{ + int ch, paint; + if(cursor_en) { + ch = CHARS[cursor_y * coreboot_video_console.columns + cursor_x]; + paint = (ch & 0xff) | ((ch<<4) & 0xf000) | ((ch >> 4) & 0x0f00); + } else { + paint = CHARS[cursor_y * coreboot_video_console.columns + cursor_x]; + } + + if (cursor_y >= 0 && cursor_y < coreboot_video_console.rows) + corebootfb_putchar(cursor_y, cursor_x, paint); +} + +static void corebootfb_enable_cursor(int state) +{ + cursor_en = state; + corebootfb_update_cursor(); +} + +static void corebootfb_get_cursor(unsigned int *x, unsigned int *y, unsigned int *en) +{ + *x = cursor_x; + *y = cursor_y; + *en = cursor_en; +} + +static void corebootfb_set_cursor(unsigned int x, unsigned int y) +{ + int cursor_remember = cursor_en; + if (cursor_remember) + corebootfb_enable_cursor(0); + + cursor_x = x; + cursor_y = y; + + if (cursor_remember) + corebootfb_enable_cursor(1); +} + +static int corebootfb_init(void) +{ + if (lib_sysinfo.framebuffer == NULL) + return -1; + + fbinfo = (unsigned long)lib_sysinfo.framebuffer; + + fbaddr = FI->physical_address; + + coreboot_video_console.columns = FI->x_resolution / FONT_WIDTH; + coreboot_video_console.rows = FI->y_resolution / FONT_HEIGHT; + + chars = (unsigned long) malloc(coreboot_video_console.rows * + coreboot_video_console.columns * 2); + + // clear boot splash screen if there is one. + corebootfb_clear(); + + corebootfb_set_cursor(0, 0); + corebootfb_enable_cursor(1); + + return 0; +} + +struct video_console coreboot_video_console = { + .init = corebootfb_init, + .putc = corebootfb_putc, + .clear = corebootfb_clear, + .scroll_up = corebootfb_scroll_up, + + .get_cursor = corebootfb_get_cursor, + .set_cursor = corebootfb_set_cursor, + .enable_cursor = corebootfb_enable_cursor, + + .columns = 80, + .rows = 25 +}; + -- cgit v1.2.3