1 /* 2 * Copyright (c) 2013 Google, Inc 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #include <common.h> 8 #include <fdtdec.h> 9 #include <lcd.h> 10 #include <malloc.h> 11 #include <asm/sdl.h> 12 #include <asm/u-boot-sandbox.h> 13 14 DECLARE_GLOBAL_DATA_PTR; 15 16 enum { 17 /* Maximum LCD size we support */ 18 LCD_MAX_WIDTH = 1366, 19 LCD_MAX_HEIGHT = 768, 20 LCD_MAX_LOG2_BPP = 4, /* 2^4 = 16 bpp */ 21 }; 22 23 vidinfo_t panel_info; 24 25 void lcd_setcolreg(ushort regno, ushort red, ushort green, ushort blue) 26 { 27 } 28 29 void lcd_ctrl_init(void *lcdbase) 30 { 31 /* 32 * Allocate memory to keep BMP color conversion map. This is required 33 * for 8 bit BMPs only (hence 256 colors). If malloc fails - keep 34 * going, it is not even clear if displyaing the bitmap will be 35 * required on the way up. 36 */ 37 panel_info.cmap = malloc(256 * NBITS(panel_info.vl_bpix) / 8); 38 } 39 40 void lcd_enable(void) 41 { 42 if (sandbox_sdl_init_display(panel_info.vl_col, panel_info.vl_row, 43 panel_info.vl_bpix)) 44 puts("LCD init failed\n"); 45 } 46 47 int sandbox_lcd_sdl_early_init(void) 48 { 49 const void *blob = gd->fdt_blob; 50 int xres = LCD_MAX_WIDTH, yres = LCD_MAX_HEIGHT; 51 int node; 52 int ret = 0; 53 54 /* 55 * The code in common/lcd.c does not cope with not being able to 56 * set up a frame buffer. It will just happily keep writing to 57 * invalid memory. So here we make sure that at least some buffer 58 * is available even if it actually won't be displayed. 59 */ 60 node = fdtdec_next_compatible(blob, 0, COMPAT_SANDBOX_LCD_SDL); 61 if (node >= 0) { 62 xres = fdtdec_get_int(blob, node, "xres", LCD_MAX_WIDTH); 63 yres = fdtdec_get_int(blob, node, "yres", LCD_MAX_HEIGHT); 64 if (xres < 0 || xres > LCD_MAX_WIDTH) { 65 xres = LCD_MAX_WIDTH; 66 ret = -EINVAL; 67 } 68 if (yres < 0 || yres > LCD_MAX_HEIGHT) { 69 yres = LCD_MAX_HEIGHT; 70 ret = -EINVAL; 71 } 72 } 73 74 panel_info.vl_col = xres; 75 panel_info.vl_row = yres; 76 panel_info.vl_bpix = LCD_COLOR16; 77 78 return ret; 79 } 80