| /* |
| * 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. |
| */ |
| |
| #include <libpayload.h> |
| #include <stdio.h> |
| #include <video_console.h> |
| |
| #include "base/algorithm.h" |
| #include "drivers/console/console.h" |
| |
| static VideoConsole *console; |
| |
| static int cursorx; |
| static int cursory; |
| |
| void video_get_rows_cols(unsigned int *rows, unsigned int *cols) |
| { |
| if (console) { |
| *cols = console->columns; |
| *rows = console->rows; |
| } else { |
| *cols = *rows = 0; |
| } |
| } |
| |
| static void video_console_fixup_cursor(void) |
| { |
| if (!console) |
| return; |
| |
| if (cursorx < 0) |
| cursorx = 0; |
| |
| if (cursory < 0) |
| cursory = 0; |
| |
| if (cursorx >= console->columns) { |
| cursorx = 0; |
| cursory++; |
| } |
| |
| while (cursory >= console->rows) { |
| console->scroll_up(console); |
| cursory--; |
| } |
| |
| if (console->set_cursor) |
| console->set_cursor(console, cursorx, cursory); |
| } |
| |
| void video_console_clear(void) |
| { |
| if (console) |
| console->clear(console); |
| |
| cursorx = 0; |
| cursory = 0; |
| |
| if (console && console->set_cursor) |
| console->set_cursor(console, cursorx, cursory); |
| } |
| |
| void video_console_putc(uint32_t row, uint32_t col, uint16_t ch) |
| { |
| if (console) |
| console->putc(console, row, col, ch); |
| } |
| |
| void video_console_putchar(uint16_t ch) |
| { |
| if (!console) |
| return; |
| |
| /* replace black-on-black with light-gray-on-black. |
| * do it here, instead of in libc/console.c |
| */ |
| if ((ch & 0xFF00) == 0) { |
| ch |= 0x0700; |
| } |
| |
| switch(ch & 0xFF) { |
| case '\r': |
| cursorx = 0; |
| break; |
| |
| case '\n': |
| cursorx = 0; |
| cursory++; |
| break; |
| |
| case '\b': |
| cursorx--; |
| if (cursorx < 0) { |
| cursory--; |
| cursorx = console->columns; |
| } |
| break; |
| |
| case '\t': |
| while (cursorx % 8 && cursorx < console->columns) |
| console->putc(console, cursory, cursorx++, |
| (ch & 0xFF00) | ' '); |
| break; |
| default: |
| console->putc(console, cursory, cursorx++, ch); |
| break; |
| } |
| |
| video_console_fixup_cursor(); |
| } |
| |
| static void _video_console_putchar(ConsoleOutputOps *me, unsigned int ch) |
| { |
| video_console_putchar(ch); |
| } |
| |
| void video_printf(int foreground, int background, enum video_printf_align align, |
| const char *fmt, ...) |
| { |
| int i = 0, len; |
| char str[200]; |
| |
| va_list ap; |
| va_start(ap, fmt); |
| len = vsnprintf(str, ARRAY_SIZE(str), fmt, ap); |
| va_end(ap); |
| if (len <= 0) |
| return; |
| |
| /* vsnprintf can return len larger than size. when it happens, |
| * only size-1 characters have been actually written. */ |
| if (len >= ARRAY_SIZE(str)) |
| len = ARRAY_SIZE(str) - 1; |
| |
| if (len > console->columns) { |
| cursorx = 0; |
| } else { |
| switch (align) { |
| case VIDEO_PRINTF_ALIGN_LEFT: |
| cursorx = 0; |
| break; |
| case VIDEO_PRINTF_ALIGN_CENTER: |
| cursorx = (console->columns - len) / 2; |
| break; |
| case VIDEO_PRINTF_ALIGN_RIGHT: |
| cursorx = console->columns - len; |
| break; |
| default: |
| break; |
| } |
| } |
| |
| foreground &= 0xf; |
| foreground <<= 8; |
| background &= 0xf; |
| background <<= 12; |
| |
| while (str[i]) |
| video_console_putchar(str[i++] | foreground | background); |
| } |
| |
| void video_console_set_cursor(uint32_t x, uint32_t y) |
| { |
| cursorx = x; |
| cursory = y; |
| video_console_fixup_cursor(); |
| } |
| |
| static Console cons = { |
| .output = { |
| .putchar = &_video_console_putchar |
| } |
| }; |
| |
| #if CONFIG_COREBOOT_VIDEO_CONSOLE |
| extern VideoConsole *coreboot_video_console; |
| #endif |
| |
| int video_init(void) |
| { |
| VideoConsole *video_console_list[] = |
| { |
| #if CONFIG_COREBOOT_VIDEO_CONSOLE |
| coreboot_video_console, |
| #endif |
| }; |
| |
| for (int i = 0; i < ARRAY_SIZE(video_console_list); i++) { |
| if (video_console_list[i]->init(video_console_list[i])) |
| continue; |
| |
| console = video_console_list[i]; |
| |
| if (console->get_cursor) { |
| uint32_t x, y; |
| console->get_cursor(console, &x, &y); |
| cursorx = x; |
| cursory = y; |
| } |
| |
| if (cursorx) { |
| cursorx = 0; |
| cursory++; |
| } |
| |
| video_console_fixup_cursor(); |
| return 0; |
| } |
| return 1; |
| } |
| |
| int video_console_init(void) |
| { |
| int ret = video_init(); |
| if (ret) |
| return ret; |
| list_insert_after(&cons.list_node, &console_list); |
| return 0; |
| } |