[U-Boot] [PATCH 22/40] Blackfin: resurrect BF533-STAMP video splash driver
Mike Frysinger
vapier at gentoo.org
Fri Jan 23 19:00:23 CET 2009
This video driver used to live in the Blackfin cpu directory, but it was
lost during the unification process. This brings it back.
Signed-off-by: Mike Frysinger <vapier at gentoo.org>
---
board/bf533-stamp/Makefile | 9 ++-
board/bf533-stamp/video.c | 167 ++++++++++++++++++++++++++++++++++++++++++++
board/bf533-stamp/video.h | 25 +++++++
3 files changed, 197 insertions(+), 4 deletions(-)
create mode 100644 board/bf533-stamp/video.c
create mode 100644 board/bf533-stamp/video.h
diff --git a/board/bf533-stamp/Makefile b/board/bf533-stamp/Makefile
index 5ae0228..5b5e199 100644
--- a/board/bf533-stamp/Makefile
+++ b/board/bf533-stamp/Makefile
@@ -1,7 +1,7 @@
#
# U-boot - Makefile
#
-# Copyright (c) 2005-2007 Analog Device Inc.
+# Copyright (c) 2005-2008 Analog Device Inc.
#
# (C) Copyright 2000-2006
# Wolfgang Denk, DENX Software Engineering, wd at denx.de.
@@ -29,10 +29,11 @@ include $(TOPDIR)/config.mk
LIB = $(obj)lib$(BOARD).a
-COBJS := $(BOARD).o spi_flash.o
+COBJS-y := $(BOARD).o spi_flash.o
+COBJS-$(CONFIG_VIDEO) += video.o
-SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
-OBJS := $(addprefix $(obj),$(COBJS))
+SRCS := $(SOBJS:.o=.S) $(COBJS-y:.o=.c)
+OBJS := $(addprefix $(obj),$(COBJS-y))
SOBJS := $(addprefix $(obj),$(SOBJS))
$(LIB): $(obj).depend $(OBJS) $(SOBJS) $(obj)u-boot.lds
diff --git a/board/bf533-stamp/video.c b/board/bf533-stamp/video.c
new file mode 100644
index 0000000..3c15eaa
--- /dev/null
+++ b/board/bf533-stamp/video.c
@@ -0,0 +1,167 @@
+/*
+ * BF533-STAMP splash driver
+ *
+ * Copyright (c) 2006-2008 Analog Devices Inc.
+ * (C) Copyright 2000
+ * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio at tin.it
+ * (C) Copyright 2002
+ * Wolfgang Denk, wd at 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);
+}
diff --git a/board/bf533-stamp/video.h b/board/bf533-stamp/video.h
new file mode 100644
index 0000000..80837e2
--- /dev/null
+++ b/board/bf533-stamp/video.h
@@ -0,0 +1,25 @@
+#include <video_logo.h>
+#define write_dest_byte(val) {*dest++=val;}
+#define BLACK (0x01800180) /* black pixel pattern */
+#define BLUE (0x296E29F0) /* blue pixel pattern */
+#define RED (0x51F0515A) /* red pixel pattern */
+#define MAGENTA (0x6ADE6ACA) /* magenta pixel pattern */
+#define GREEN (0x91229136) /* green pixel pattern */
+#define CYAN (0xAA10AAA6) /* cyan pixel pattern */
+#define YELLOW (0xD292D210) /* yellow pixel pattern */
+#define WHITE (0xFE80FE80) /* white pixel pattern */
+
+#define true 1
+#define false 0
+
+typedef struct {
+ unsigned int sav;
+ unsigned int eav;
+} system_code_type;
+
+const system_code_type system_code_map[] = {
+ { 0xFF000080, 0xFF00009D },
+ { 0xFF0000AB, 0xFF0000B6 },
+ { 0xFF0000C7, 0xFF0000DA },
+ { 0xFF0000EC, 0xFF0000F1 },
+};
--
1.6.1
More information about the U-Boot
mailing list