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[/] [openrisc/] [trunk/] [bootloaders/] [orpmon/] [common/] [screen.c] - Rev 509
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#include "common.h" #include "support.h" #include "screen.h" #if CRT_ENABLED unsigned long fg_color = COLOR_WHITE; unsigned long bg_color = COLOR_BLACK; int cx = 0; int cy = 0; extern unsigned char font[256][12]; static char screen[CHARSY][CHARSX]; void put_char_xy(int x, int y, char c) { int i, j; screen[y][x] = c; x *= CHAR_WIDTH; y *= CHAR_HEIGHT; for (i = 0; i < CHAR_HEIGHT; i++) { int t = font[(unsigned char)c][i]; for (j = 0; j < CHAR_WIDTH; j++) { PUT_PIXEL(x + j, y + i, (t & 1) ? fg_color : bg_color); t >>= 1; } } } static void scroll(void) { int x, y; #if 1 for (y = 1; y < CHARSY; y++) for (x = 0; x < CHARSX; x++) put_char_xy(x, y - 1, screen[y][x]); #else memcpy((unsigned char *)FB_BASE_ADDR, ((unsigned char *)FB_BASE_ADDR) + RESX * CHAR_HEIGHT, (RESY - CHAR_HEIGHT) * RESX); memcpy(&screen[0][0], &screen[1][0], (CHARSY - 1) * CHARSX); #endif for (x = 0; x < CHARSX; x++) put_char_xy(x, CHARSY - 1, ' '); cy--; } void screen_putc(char c) { int t; switch (c) { case '\n': cy++; cx = 0; if (cy >= CHARSY) scroll(); break; case '\r': cx = 0; break; case '\t': for (t = 0; t < 8 - (cx & 7); t++) screen_putc(' '); break; case '\b': if (cx > 0) cx--; put_char_xy(cx, cy, ' '); break; default: put_char_xy(cx, cy, c); cx++; if (cx >= CHARSX) screen_putc('\n'); break; } } void screen_clear() { memset((unsigned char *)FB_BASE_ADDR, bg_color, RESX * RESY); memset(&screen[0][0], ' ', CHARSX * CHARSY); cx = cy = 0; } void screen_puts(char *s) { while (*s) { screen_putc(*s); s++; } } void screen_init() { screen_clear(); SET_PALLETE(COLOR_BLACK, 0, 0, 0); SET_PALLETE(COLOR_WHITE, 127, 127, 127); /* Set screen offset */ *((unsigned long *)CRT_BUFFER_REG) = FB_BASE_ADDR; /* Turn screen on */ *((unsigned long *)CRT_REG) = 0x00000001; } #endif /* CRT_ENABLED */
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