Hi Sahaj, On Sun, 17 Nov 2019 at 21:33, Sahaj Sarup <sahajsa...@gmail.com> wrote: > > Hi All, > > I was wondering if you could answer a few questions regarding u-boot > on Asus CP101 gru/bob ? > > - To test the u-boot image following README.chromium-chainload, > should I expect output on the display or do I need > CDD/SuzyQable Cable for serial?
The display should work OK. I don't think that device supports CCD. > > - The CONFIG_SYS_TEXT_BASE is currently 0x00200000 but > shouldn't it be CONFIG_SYS_TEXT_BASE=0x20000100 > since its supposed to match CONFIG_KERNEL_START > from /chromiumos/platform/depthcharge/board/gru/defconfig Yes it is a bit annoying because the in-house bootloader doesn't support FIT properly. As I recall you have to set it to the exact address that it appears in the FIT. > > - In order to flash to spi, what's the procedure? The chain load option doesn't use SPI flash. You actually sign the image and put it into the kernel partition. Not much help for you, but there is a new feature on more recent Chromebooks called 'altfw' (alternative firmware) and if enabled, it lets you press 1 to boot U-Boot (only in dev mode). It only works on x86 devices so far and even then the device support is pretty basic if it boots at all. But the good thing is that you can put things into the altfw partition in SPI flash and they will boot without affecting the device. Regards, Simon _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
