On 04/20/2016 03:17 AM, Yang, Wenyou wrote: > Hi Marek, > >> -----Original Message----- >> From: Marek Vasut [mailto:ma...@denx.de] >> Sent: 2016年4月20日 0:34 >> To: Yang, Wenyou <wenyou.y...@atmel.com> >> Cc: u-boot@lists.denx.de >> Subject: Re: SAMA5D2 xplained SD/eMMC boot >> >> On 04/19/2016 05:22 AM, Yang, Wenyou wrote: >>> Hi Marek, >>> >>>> -----Original Message----- >>>> From: Marek Vasut [mailto:marek.va...@gmail.com] >>>> Sent: 2016年4月18日 23:30 >>>> To: Yang, Wenyou <wenyou.y...@atmel.com> >>>> Cc: u-boot@lists.denx.de >>>> Subject: SAMA5D2 xplained SD/eMMC boot >>>> >>>> Hi! >>>> >>>> I've been playing around with latest mainline u-boot on sama5d2 >>>> xplained ultra. I noticed that if I want to boot the board from SD >>>> card (SDHCI1), the board will indeed load the SPL from it, but SPL >>>> will try to load u-boot.img from eMMC >>>> (SDHCI0) and fail, as my eMMC is blank. >>> >>> Yes, there is some issue to load u-boot.img. I found there is something to >>> do on >> sdhci.c. >>> >>> You can try this branch, it should works. >>> >>> https://github.com/linux4sam/u-boot-at91/commits/u-boot-2016.03-at91 >> >> I am not interested in using non-mainline stuff. Do you have any particular >> patch/commit which I can refer to ? I do not think this has anything to do >> with >> sdhci.c driver at all, it has to do with detecting the boot device from >> which SPL >> was started and loading u-boot.img from the same boot device instead of >> always >> using SDHCI0. > > I will test the mainline code. I will let you know when I get something.
OK. Does the SoC have any sort of register which lists the current boot device ? > Thank you. > >> >>>> This is a result of hard-coding boot >>>> device to >>>> BOOT_DEVICE_MMC1 in arch/arm/mach-at91/spl.c spl_boot_device() I think. >>>> >>>> Is there any way to discern from which SDHCI the board booted to >>>> continue loading u-boot.img from the correct one ? This would let us >>>> implement >>>> board_boot_order() and boot from correct SDHCI. >>>> >>>> -- >>>> Best regards, >>>> Marek Vasut >>> >>> >>> Best Regards, >>> Wenyou Yang >>> >> >> >> -- >> Best regards, >> Marek Vasut > > > Best Regards, > Wenyou Yang > -- Best regards, Marek Vasut _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot