Difference between revisions of "U-Boot Splash Screen"
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=Introduction= | =Introduction= | ||
− | On this page you will learn how to activate LCD support in U-Boot and display a Splash Screen at boot. The following instructions have only be tested on [[OPOS6UL]]. | + | On this page you will learn how to activate LCD support in U-Boot and display a Splash Screen at boot. |
+ | {{Note|The following instructions have only be tested on [[OPOS6UL]].}} | ||
=Installation= | =Installation= | ||
− | * Save your image as BMP file (in Gimp use Run-Length (RLE) encoding, no alpha channel and no color informations (compatibility options)) | + | * Save your image as BMP file (in Gimp use Run-Length (RLE) encoding, no alpha channel and no color informations (compatibility options). If the RLE option is grayed out, go to Image > Mode and select Indexed...) |
− | * Activate LCD in U-Boot: | + | * Activate LCD in U-Boot (here ST0700): |
<pre class="apf"> | <pre class="apf"> | ||
BIOS> setenv videomode video=ctfb:x:800,y:480,depth:18,pclk:33033,le:8,ri:4,up:2,lo:4,hs:64,vs:4,sync:0,vmode:0 | BIOS> setenv videomode video=ctfb:x:800,y:480,depth:18,pclk:33033,le:8,ri:4,up:2,lo:4,hs:64,vs:4,sync:0,vmode:0 | ||
Line 14: | Line 13: | ||
<pre class="apf"> | <pre class="apf"> | ||
BIOS> tftpboot ${loadaddr} xxx.bmp | BIOS> tftpboot ${loadaddr} xxx.bmp | ||
− | BIOS> bmp info ${loadaddr} | + | BIOS> bmp info ${loadaddr} |
Image size : 296 x 72 | Image size : 296 x 72 | ||
Bits per pixel: 8 | Bits per pixel: 8 | ||
Line 31: | Line 30: | ||
BIOS> setenv splashsource mmc_fs | BIOS> setenv splashsource mmc_fs | ||
</pre> | </pre> | ||
+ | |||
+ | =Continuity with Linux Boot Logo= | ||
+ | * If you want Linux to keep your U-Boot Logo during boot process, then some tweaks are needed: | ||
+ | ** define CONFIG_SYS_MEM_TOP_HIDE in U-Boot configuration file, here we reserve 2MBytes: <source lang="c">#define CONFIG_SYS_MEM_TOP_HIDE (2 << 20)</source> | ||
+ | * Force framebuffer RAM address in U-Boot LCD driver ([[OPOS6UL]] has 256MBytes (0x10000000) RAM starting at physical 0x80000000):<source lang="diff">@@ -197,8 +197,8 @@ | ||
+ | panel.memSize = mode.xres * mode.yres * panel.gdfBytesPP; | ||
+ | |||
+ | /* Allocate framebuffer */ | ||
+ | - fb = memalign(ARCH_DMA_MINALIGN, | ||
+ | - roundup(panel.memSize, ARCH_DMA_MINALIGN)); | ||
+ | + fb = (void *)0x8fe00000; /*memalign(ARCH_DMA_MINALIGN, | ||
+ | + roundup(panel.memSize, ARCH_DMA_MINALIGN));*/ | ||
+ | if (!fb) { | ||
+ | printf("MXSFB: Error allocating framebuffer!\n"); | ||
+ | return NULL; | ||
+ | </source> | ||
+ | |||
+ | * Tell Linux to not print cursor on Framebuffer and to not use last 2M of RAM: <pre class="apf">BIOS> setenv extrabootargs vt.global_cursor_default=0 mem=248M</pre> | ||
+ | |||
+ | * Force framebuffer RAM address to same value in Linux LCD driver: <source lang="diff">@@ -825,17 +824,18 @@ | ||
+ | var->vmode = FB_VMODE_NONINTERLACED; | ||
+ | |||
+ | /* Memory allocation for framebuffer */ | ||
+ | +#define FORCED_FB_ADDR 0x8fe00000 | ||
+ | fb_size = SZ_2M; | ||
+ | - fb_virt = dma_alloc_wc(dev, PAGE_ALIGN(fb_size), &fb_phys, GFP_KERNEL); | ||
+ | + fb_virt = ioremap_wc(FORCED_FB_ADDR, fb_size); | ||
+ | if (!fb_virt) | ||
+ | return -ENOMEM; | ||
+ | |||
+ | + fb_phys = FORCED_FB_ADDR; | ||
+ | fb_info->fix.smem_start = fb_phys; | ||
+ | fb_info->screen_base = fb_virt; | ||
+ | fb_info->screen_size = fb_info->fix.smem_len = fb_size; | ||
+ | |||
+ | - if (mxsfb_restore_mode(host, vmode)) | ||
+ | - memset(fb_virt, 0, fb_size); | ||
+ | + mxsfb_restore_mode(host, vmode); | ||
+ | |||
+ | return 0; | ||
+ | }</source> | ||
+ | * Remove following options of your Linux config file: | ||
+ | <source lang="diff">-CONFIG_FRAMEBUFFER_CONSOLE=y | ||
+ | -CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y | ||
+ | -CONFIG_FONTS=y | ||
+ | -CONFIG_FONT_8x8=y | ||
+ | -CONFIG_FONT_8x16=y</source> | ||
+ | |||
+ | * Reflash all that on your board and... That's it ! ;-) | ||
=Links= | =Links= | ||
* http://www.denx.de/wiki/DULG/UBootSplashScreen | * http://www.denx.de/wiki/DULG/UBootSplashScreen | ||
+ | |||
+ | [[Category:Boot Logo]] |
Latest revision as of 08:15, 15 March 2018
Contents
Introduction
On this page you will learn how to activate LCD support in U-Boot and display a Splash Screen at boot.
Note: The following instructions have only be tested on OPOS6UL. |
Installation
- Save your image as BMP file (in Gimp use Run-Length (RLE) encoding, no alpha channel and no color informations (compatibility options). If the RLE option is grayed out, go to Image > Mode and select Indexed...)
- Activate LCD in U-Boot (here ST0700):
BIOS> setenv videomode video=ctfb:x:800,y:480,depth:18,pclk:33033,le:8,ri:4,up:2,lo:4,hs:64,vs:4,sync:0,vmode:0
Test it
BIOS> tftpboot ${loadaddr} xxx.bmp BIOS> bmp info ${loadaddr} Image size : 296 x 72 Bits per pixel: 8 Compression : 0
BIOS> bmp display ${loadaddr} 100 50
Deploy it
- Here we assume that logo is stored in /boot directory of rootfs eMMC partition as logo.bmp:
BIOS> setenv splashimage 0x80000000 BIOS> setenv splashfile /boot/logo.bmp BIOS> setenv splashsource mmc_fs
Continuity with Linux Boot Logo
- If you want Linux to keep your U-Boot Logo during boot process, then some tweaks are needed:
- define CONFIG_SYS_MEM_TOP_HIDE in U-Boot configuration file, here we reserve 2MBytes:
#define CONFIG_SYS_MEM_TOP_HIDE (2 << 20)
- define CONFIG_SYS_MEM_TOP_HIDE in U-Boot configuration file, here we reserve 2MBytes:
- Force framebuffer RAM address in U-Boot LCD driver (OPOS6UL has 256MBytes (0x10000000) RAM starting at physical 0x80000000):
@@ -197,8 +197,8 @@ panel.memSize = mode.xres * mode.yres * panel.gdfBytesPP; /* Allocate framebuffer */ - fb = memalign(ARCH_DMA_MINALIGN, - roundup(panel.memSize, ARCH_DMA_MINALIGN)); + fb = (void *)0x8fe00000; /*memalign(ARCH_DMA_MINALIGN, + roundup(panel.memSize, ARCH_DMA_MINALIGN));*/ if (!fb) { printf("MXSFB: Error allocating framebuffer!\n"); return NULL;
- Tell Linux to not print cursor on Framebuffer and to not use last 2M of RAM:
BIOS> setenv extrabootargs vt.global_cursor_default=0 mem=248M
- Force framebuffer RAM address to same value in Linux LCD driver:
@@ -825,17 +824,18 @@ var->vmode = FB_VMODE_NONINTERLACED; /* Memory allocation for framebuffer */ +#define FORCED_FB_ADDR 0x8fe00000 fb_size = SZ_2M; - fb_virt = dma_alloc_wc(dev, PAGE_ALIGN(fb_size), &fb_phys, GFP_KERNEL); + fb_virt = ioremap_wc(FORCED_FB_ADDR, fb_size); if (!fb_virt) return -ENOMEM; + fb_phys = FORCED_FB_ADDR; fb_info->fix.smem_start = fb_phys; fb_info->screen_base = fb_virt; fb_info->screen_size = fb_info->fix.smem_len = fb_size; - if (mxsfb_restore_mode(host, vmode)) - memset(fb_virt, 0, fb_size); + mxsfb_restore_mode(host, vmode); return 0; }
- Remove following options of your Linux config file:
-CONFIG_FRAMEBUFFER_CONSOLE=y
-CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
-CONFIG_FONTS=y
-CONFIG_FONT_8x8=y
-CONFIG_FONT_8x16=y
- Reflash all that on your board and... That's it ! ;-)