6/13/2023 0 Comments U boot splash![]() Select the list for Lock screen status, and select an option such as Mail, Weather, or Calendar. Customize a lock screen quick notification A splash screen is enabled by default, and is shown on the LVDS LCD. Check that the toggle for Show lock screen background picture on the sign-in screen is turned on. James was more than up to the task at hand as she tossed Valkyria around the ring, even sending her flying into the ring post and locking her in an abdominal stretch. If you don't see the Windows spotlight image when you're signing in, select Start > Settings > Personalization > Lock screen. Lyra Valkyria became the next NXT Superstar to advance to the semi finals of the NXT Women’s Championship Tournament as she defeated Kiana James in a resounding victory. The Windows spotlight image should appear on the lock screen. Press Windows logo key + L to lock your device. If you chose Windows spotlight for your lock screen, you can test if it's working correctly. If you see folders listed that you don't want included in the slideshow, select Remove next to that folder. Select Slideshow, then select Browse, select the folder you want to use, and select Choose this folder. Select Picture, then select a recent image, or select Browse photos, select the photo you want to use, and select Choose picture. The default U-Boot Splash Screen logo from Variscite: 2.2. Check with your system administrator for more info. Skipping incompatible /lib/libpthread.so.0 when searching for /lib/libpthread.so.Note: If you don't see this option, it might be because it's managed by your organization.You may need your board schematics to check to which peripheral is connected and change it accordingly:Īt91_set_a_periph(AT91_PIO_PORTA, 16, 0) /* LCDD16 */Īt91_set_a_periph(AT91_PIO_PORTA, 17, 0) /* LCDD17 */Īt91_set_a_periph(AT91_PIO_PORTA, 18, 0) /* LCDD18 */Īt91_set_a_periph(AT91_PIO_PORTA, 19, 0) /* LCDD19 */Īt91_set_a_periph(AT91_PIO_PORTA, 20, 0) /* LCDD20 */Īt91_set_a_periph(AT91_PIO_PORTA, 21, 0) /* LCDD21 */Īt91_set_a_periph(AT91_PIO_PORTA, 22, 0) /* LCDD22 */Īt91_set_a_periph(AT91_PIO_PORTA, 23, 0) /* LCDD23 */Īt this point you should be able to have a nice boot splashscreen that you can change from userspace if you write to the right address. Mine has the higher 8 bit connected to peripheral A, while the evaluation kit’s higher 8 bit are connected to the peripheral C. Compile u-boot for the Raspi2 sudo apt install make gcc bison flex sudo apt-get install gcc-arm-none-eabi binutils-arm-none-eabi export CROSSCOMPILEarm-none-eabi- export ARCHarm make rpi2defconfig all Start QEMU qemu-system-arm -M raspi2 -nographic -kernel. Now check how the LCD is connected to the board. Set the parameters used to initialize the LCD. In my case this is in board/atmel/sama5d3xek/sama5d3xek.c. It makes calls to routines in board.c to set up the LCDC and frame buffer. There is a frame buffer driver for am335x in the drivers/video directory called am3355x-fb.c. All the code below is based on Processor Linux SDK 03.02.00.05. Now you’ll probably have to change a couple of things: how the LCD is initialized by your board and how it is physically connected. U-Boot Splash Screen¶ Adding a splash screen. Adjust them according to the LCD datasheet. Some of these parameters could change for your LCD, such as LCD_OUTPUT_BPP. * For an Atmel based board is quite safe to use it, even though the LCD is a 24bit RGB */ * Comment these lines that enable the raw image logo */ * Do not use LCD_COLOR32 or you'll get a BUG() and a bricked board */ These changes take place in the board header file that contains its configuration, in my case, it was the include/configs/sama5d3xek.h file. ![]() The default U-Boot configuration from Atmel (U-Boot 2015.01) does not support a splashscreen, only a raw image (logo) embedded in the code, so the first step is remove the support for the logo, enable the Atmel HLCD driver, enable the splashscreen and enable the bmp command that is needed to display the. Recently, I had to do just that with an Atmel SAMA5D3 board that was derived from the SAMA5D3 evaluation kit, but instead of mounting the default 800×400 LCD it mounts a 480×272 LCD with different characteristics such as clock frequency, horizontal/vertical syncs, and so on. But if the LCD is quite different, you have to make some changes that are not difficult, but can take some time if you don’t know where to search. Then, when you have your custom board based on that evaluation board and if you’re lucky enough to use an LCD with the same characteristics, changing the splashscreen is an easy task. ![]() Normally, when you start an embedded Linux project you have an evaluation kit that comes with an LCD with a splashscreen in U-Boot.
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