/* * BF533-STAMP splash driver * * Copyright (c) 2006-2008 Analog Devices Inc. * (C) Copyright 2000 * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it * (C) Copyright 2002 * Wolfgang Denk, wd@denx.de * * Licensed under the GPL-2 or later. */ #include <stdarg.h> #include <common.h> #include <config.h> #include <malloc.h> #include <asm/blackfin.h> #include <asm/mach-common/bits/dma.h> #include <i2c.h> #include <linux/types.h> #include <devices.h> int gunzip(void *, int, unsigned char *, unsigned long *); #define DMA_SIZE16 2 #include <asm/mach-common/bits/ppi.h> #define NTSC_FRAME_ADDR 0x06000000 #include "video.h" /* NTSC OUTPUT SIZE 720 * 240 */ #define VERTICAL 2 #define HORIZONTAL 4 int is_vblank_line(const int line) { /* * This array contains a single bit for each line in * an NTSC frame. */ if ((line <= 18) || (line >= 264 && line <= 281) || (line == 528)) return true; return false; } int NTSC_framebuffer_init(char *base_address) { const int NTSC_frames = 1; const int NTSC_lines = 525; char *dest = base_address; int frame_num, line_num; for (frame_num = 0; frame_num < NTSC_frames; ++frame_num) { for (line_num = 1; line_num <= NTSC_lines; ++line_num) { unsigned int code; int offset = 0; int i; if (is_vblank_line(line_num)) offset++; if (line_num > 266 || line_num < 3) offset += 2; /* Output EAV code */ code = system_code_map[offset].eav; write_dest_byte((char)(code >> 24) & 0xff); write_dest_byte((char)(code >> 16) & 0xff); write_dest_byte((char)(code >> 8) & 0xff); write_dest_byte((char)(code) & 0xff); /* Output horizontal blanking */ for (i = 0; i < 67 * 2; ++i) { write_dest_byte(0x80); write_dest_byte(0x10); } /* Output SAV */ code = system_code_map[offset].sav; write_dest_byte((char)(code >> 24) & 0xff); write_dest_byte((char)(code >> 16) & 0xff); write_dest_byte((char)(code >> 8) & 0xff); write_dest_byte((char)(code) & 0xff); /* Output empty horizontal data */ for (i = 0; i < 360 * 2; ++i) { write_dest_byte(0x80); write_dest_byte(0x10); } } } return dest - base_address; } void fill_frame(char *Frame, int Value) { int *OddPtr32; int OddLine; int *EvenPtr32; int EvenLine; int i; int *data; int m, n; /* fill odd and even frames */ for (OddLine = 22, EvenLine = 285; OddLine < 263; OddLine++, EvenLine++) { OddPtr32 = (int *)((Frame + (OddLine * 1716)) + 276); EvenPtr32 = (int *)((Frame + (EvenLine * 1716)) + 276); for (i = 0; i < 360; i++, OddPtr32++, EvenPtr32++) { *OddPtr32 = Value; *EvenPtr32 = Value; } } for (m = 0; m < VERTICAL; m++) { data = (int *)u_boot_logo.data; for (OddLine = (22 + m), EvenLine = (285 + m); OddLine < (u_boot_logo.height * VERTICAL) + (22 + m); OddLine += VERTICAL, EvenLine += VERTICAL) { OddPtr32 = (int *)((Frame + ((OddLine) * 1716)) + 276); EvenPtr32 = (int *)((Frame + ((EvenLine) * 1716)) + 276); for (i = 0; i < u_boot_logo.width / 2; i++) { /* enlarge one pixel to m x n */ for (n = 0; n < HORIZONTAL; n++) { *OddPtr32++ = *data; *EvenPtr32++ = *data; } data++; } } } } static void video_init(char *NTSCFrame) { NTSC_framebuffer_init(NTSCFrame); fill_frame(NTSCFrame, BLUE); bfin_write_PPI_CONTROL(0x0082); bfin_write_PPI_FRAME(0x020D); bfin_write_DMA0_START_ADDR(NTSCFrame); bfin_write_DMA0_X_COUNT(0x035A); bfin_write_DMA0_X_MODIFY(0x0002); bfin_write_DMA0_Y_COUNT(0x020D); bfin_write_DMA0_Y_MODIFY(0x0002); bfin_write_DMA0_CONFIG(0x1015); bfin_write_PPI_CONTROL(0x0083); } int drv_video_init(void) { device_t videodev; video_init((void *)NTSC_FRAME_ADDR); memset(&videodev, 0, sizeof(videodev)); strcpy(videodev.name, "video"); videodev.ext = DEV_EXT_VIDEO; videodev.flags = DEV_FLAGS_SYSTEM; return device_register(&videodev); }