[U-Boot] SPL and an LCD splash screen on AM335x
Hello! We are currently working on the specification for a project using the TI AM335x where the overall system boot time has to be reduced as far as possible. In order to achieve that I am proposing that we implement a board specific spl_start_uboot() function which under normal circumstances U-Boot SPL will load the Linux kernel directly. One of the other requirements is to display a splash screen logo on the LCD as early in the boot process as possible. Is it possible to get U-Boot SPL to do that or will we always have to boot through U-Boot or see if we can get the Linux kernel to do it as early as possible? Thoughts and ideas welcome. Andy. ___ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
Re: [U-Boot] SPL and an LCD splash screen on AM335x
Hi Andy, I also tried to boot Linux directly on my Zynq board. But I could not understand the instructions given in readme.falcon, so the project is stalled. google *falcon mode U-boot , *you will find couple of presentations, and in doc you have readme.falcon.txt that explains this with an example. Since I also want to continue on this, so let us continue this discussion. Thanks and regards, Abdul Basit On 30 July 2014 12:13, Andy Pont andy.p...@sdcsystems.com wrote: Hello! We are currently working on the specification for a project using the TI AM335x where the overall system boot time has to be reduced as far as possible. In order to achieve that I am proposing that we implement a board specific spl_start_uboot() function which under normal circumstances U-Boot SPL will load the Linux kernel directly. One of the other requirements is to display a splash screen logo on the LCD as early in the boot process as possible. Is it possible to get U-Boot SPL to do that or will we always have to boot through U-Boot or see if we can get the Linux kernel to do it as early as possible? Thoughts and ideas welcome. Andy. ___ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot ___ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
Re: [U-Boot] SPL and an LCD splash screen on AM335x
Hi Andy, On 30/07/2014 08:43, Andy Pont wrote: Hello! We are currently working on the specification for a project using the TI AM335x where the overall system boot time has to be reduced as far as possible. In order to achieve that I am proposing that we implement a board specific spl_start_uboot() function which under normal circumstances U-Boot SPL will load the Linux kernel directly. Of course: spl_start_uboot() is the board specific function that decides to load either kernel or u-boot. One of the other requirements is to display a splash screen logo on the LCD as early in the boot process as possible. Is it possible to get U-Boot SPL to do that or will we always have to boot through U-Boot or see if we can get the Linux kernel to do it as early as possible? This is against the concept. Falcon boot is thought to start the kernel as fast as possible, removing most of the stuff that belongs to u-boot. The goal is reached in another way: booting the kernel faster let that the framebuffer/drm driver in kernel is initialized very soon, and you have to provide your logo during kernel boot. Best regards, Stefano Babic -- = DENX Software Engineering GmbH, MD: Wolfgang Denk Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sba...@denx.de = ___ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
