[U-Boot] IMX51 EVK Splash Screen
Thomas Besemer
thomas.besemer at gmail.com
Thu Jan 20 03:06:56 CET 2011
Hi folks -
I had posted last week. I was able to get basic Splash Screen going on EVK,
through using patches I found from googling around. At the end of this email,
the patch set that shows the differences from the U-Boot I pulled on
12/24/2010. I am not sure I have the right patch set, but in this case,
what I have does seem to work; U-Boot does output to LCD display on the
second Display Interface.
Through some of the archives, this one specifically:
http://www.mail-archive.com/u-boot@lists.denx.de/msg41664.html
There seems to have been a discussion on lcd_setmem(). Has this been
resolved, and I missed it? You'll see from patch set that I just put a
very large buffer in place (hard coded hack). U-Boot hung on boot before
I put this in, and based on what I see on mailing list, this seems to be
an issue of not having the display information available early on in boot.
At any rate, I got it to boot, and see that the LCD shows display on
startup. Yet, I lose the console on this; the serial port is read, but
the output goes to LCD.
I have still not displayed a bit map image, but with IPU working, not
horribly concerned.
In an ideal world, what I would like is to not loose the console. I want
stdin/stdout to remain on serial port, while I toss a bit map out on LCD.
Any comments on how to do this? End game is that I toss a splash screen
up on LCD on EVK, while having U-Boot information still on the console.
So, a couple of things:
1. Do I have correct patch work for this version of U-Boot, or is there a
newer version of U-Boot to pull? I pulled both mainline and IMX tree
yesterday, don't see the MX51 EVK in them.
2. How to configure so that I get console while LCD is available for display.
3. What is current status on lcd_setmem() thing.
If this patch set that I have is workable, then I am going to move forward
to put in support for DVI interface on EVK, and figure out how to use
U-Boot Environment Variables to specify which DIU to use.
I might have missed a few things along the way folks; I am not the sharpest
tool in the shed. Please let me know if I missed patch sets on lcd_setmem(),
and help me understand how to make sure console works with Splash Screen.
Thanks,
tom
Index: include/configs/mx51evk.h
===================================================================
--- include/configs/mx51evk.h (revision 173)
+++ include/configs/mx51evk.h (working copy)
@@ -190,6 +190,15 @@
#define CONFIG_SYS_DDR_CLKSEL 0
#define CONFIG_SYS_CLKTL_CBCDR 0x59E35100
+/*
+ * Framebuffer and LCD
+ */
+#define CONFIG_LCD
+#define CONFIG_VIDEO_MX5
+#define LCD_BPP LCD_COLOR16
+#define CONFIG_CMD_BMP
+#define CONFIG_BMP_16BPP
+
/*-----------------------------------------------------------------------
* FLASH and environment organization
*/
Index: board/freescale/mx51evk/mx51evk.c
===================================================================
--- board/freescale/mx51evk/mx51evk.c (revision 170)
+++ board/freescale/mx51evk/mx51evk.c (working copy)
@@ -34,10 +34,38 @@
#include <fsl_pmic.h>
#include <mc13892.h>
+#ifdef CONFIG_LCD
+#include <linux/fb.h>
+#include <lcd.h>
+#endif
+
DECLARE_GLOBAL_DATA_PTR;
static u32 system_rev;
+extern int mx51_fb_init(struct fb_videomode *mode, u32 ipu_di, u32 pix_fmt);
+#ifdef CONFIG_LCD
+static struct fb_videomode claa_wvga = {
+ "CLAA07LC0ACW",
+ 57, /* Refresh */
+ 800, /* xres */
+ 480, /* yres */
+ 37037, /* pixclock = 27Mhz */
+ 40, /* left margin */
+ 60, /* right margin */
+ 10, /* upper margin */
+ 10, /* lower margin */
+ 20, /* hsync-len */
+ 10, /* vsync-len */
+ 0, /* sync */
+ FB_VMODE_NONINTERLACED, /* vmode */
+ 0, /* flag */
+};
+
+static int wvga_ipu_di = 1;
+static int wvga_bppix = 16;
+#endif
+
#ifdef CONFIG_FSL_ESDHC
struct fsl_esdhc_cfg esdhc_cfg[2] = {
{MMC_SDHC1_BASE_ADDR, 1},
@@ -148,6 +176,41 @@
mxc_iomux_set_pad(MX51_PIN_NANDF_D11, 0x2180);
}
+#ifdef CONFIG_LCD
+void setup_iomux_ipu(void)
+{
+ puts( "setup_iopmux_ipu(): invoked\n" );
+ /* DISP2_DAT [0:15] are configured by default */
+ mxc_request_iomux(MX51_PIN_DI1_D1_CS, IOMUX_CONFIG_ALT4);
+ mxc_iomux_set_pad(MX51_PIN_DI1_D1_CS,
+ PAD_CTL_PKE_ENABLE | PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST);
+ mxc_request_iomux(MUX_IN_GPIO3_IPP_IND_G_IN_4_SELECT_INPUT,
+ INPUT_CTL_PATH1);
+
+ /* DISP2_DRDY pin */
+ mxc_request_iomux(MX51_PIN_DI_GP4, IOMUX_CONFIG_ALT4);
+ mxc_iomux_set_pad(MX51_PIN_DI_GP4, PAD_CTL_PKE_ENABLE |
+ PAD_CTL_PUE_KEEPER | PAD_CTL_DRV_LOW);
+
+ puts( "setup_iopmux_ipu(): done\n" );
+}
+
+#endif
+
+#ifdef CONFIG_LCD
+void lcd_enable(void)
+{
+ int ret;
+puts( "lcd_enable(): invoked\n" );
+
+ ret = mx51_fb_init(&claa_wvga, wvga_ipu_di, wvga_bppix);
+ if (ret) {
+ puts("LCD cannot be configured\n");
+ }
+
+}
+#endif
+
#ifdef CONFIG_MXC_SPI
static void setup_iomux_spi(void)
{
@@ -409,7 +472,9 @@
setup_iomux_uart();
setup_iomux_fec();
-
+#ifdef CONFIG_LCD
+ setup_iomux_ipu();
+#endif
return 0;
}
Index: common/lcd.c
===================================================================
--- common/lcd.c (revision 170)
+++ common/lcd.c (working copy)
@@ -438,16 +438,21 @@
ulong lcd_setmem (ulong addr)
{
ulong size;
+#ifdef ORIGINAL_PRE_TBESEMER
int line_length = (panel_info.vl_col * NBITS (panel_info.vl_bpix)) / 8;
debug ("LCD panel info: %d x %d, %d bit/pix\n",
panel_info.vl_col, panel_info.vl_row, NBITS (panel_info.vl_bpix) );
size = line_length * panel_info.vl_row;
+#else
+ size = 1024 * 1024 * 12;
/* Round up to nearest full page */
size = (size + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
+#endif
+
/* Allocate pages for the frame buffer. */
addr -= size;
Index: drivers/video/mxc_ipuv3_fb.c
===================================================================
--- drivers/video/mxc_ipuv3_fb.c (revision 170)
+++ drivers/video/mxc_ipuv3_fb.c (working copy)
@@ -526,7 +526,7 @@
*
* @return Appropriate error code to the kernel common code
*/
-static int mxcfb_probe(u32 interface_pix_fmt, struct fb_videomode *mode)
+static int mxcfb_probe(u32 interface_pix_fmt, struct fb_videomode
*mode, u32 ipu_di)
{
struct fb_info *fbi;
struct mxcfb_info *mxcfbi;
@@ -550,11 +550,14 @@
mxcfbi->blank = FB_BLANK_POWERDOWN;
}
- mxcfbi->ipu_di = 0;
+ mxcfbi->ipu_di = ipu_di;
ipu_disp_set_global_alpha(mxcfbi->ipu_ch, 1, 0x80);
ipu_disp_set_color_key(mxcfbi->ipu_ch, 0, 0);
- strcpy(fbi->fix.id, "DISP3 BG");
+ if (ipu_di == 0)
+ strcpy(fbi->fix.id, "DISP3 BG");
+ else if (ipu_di == 1)
+ strcpy(fbi->fix.id, "DISP3 BG - DI1");
g_dp_in_use = 1;
@@ -625,9 +628,10 @@
memset(lcdbase, 0, mem_len);
}
-int mx51_fb_init(struct fb_videomode *mode)
+int mx51_fb_init(struct fb_videomode *mode, u32 ipu_di, u32 bppix)
{
int ret;
+ uint32_t pixfmt = 0;
ret = ipu_probe();
if (ret)
@@ -635,8 +639,24 @@
lcd_base += 56;
+ switch (bppix) {
+ case 32:
+ pixfmt = IPU_PIX_FMT_BGR32;
+ break;
+ case 24:
+ pixfmt = IPU_PIX_FMT_BGR24;
+ break;
+ case 18:
+ pixfmt = IPU_PIX_FMT_RGB666;
+ break;
+ case 16:
+ pixfmt = IPU_PIX_FMT_RGB565;
+ break;
+ }
+
+
debug("Framebuffer at 0x%x\n", (unsigned int)lcd_base);
- ret = mxcfb_probe(IPU_PIX_FMT_RGB666, mode);
+ ret = mxcfb_probe(pixfmt, mode, ipu_di);
return ret;
}
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