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. 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 _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
