Hi Masahiro, On 04/30/2014 11:54 AM, Masahiro Yamada wrote: > Hi Michal, > > I am a user of Zynq ZC-706 board. > > On u-boot 2014.01 release, I put Kernel Image, Device Tree, > Ramdisk into "fit.itb" and I could successfully boot Linux Kernel. > > But I don't know how to boot Kernel on u-boot 2014.04 release. > Please help! > > The default boot sequence of Zynq on the u-boot-2014.04 release > is Falcon boot, right?
I personally use SPL->full u-boot -> linux but IRC I have also tested SPL->linux. > I am trying to boot Linux with > - U-boot 2014.04 > - Linux Kernel 3.14 > - SD boot mode > - ZC706 board > > What I did is roughly like this: > > ## U-Boot ## Before you build u-boot you have to copy ps7_init.c/h from your hw design to the u-boot if you want to use SPL. > [1] Build u-boot > [2] Convert spl/u-boot-spl.bin into boot.bin > with BootGen tool yes - or if you look at xilinx git u-boot repo we have one simple python script which does this automatically without bootgen. > [3] Copy "boot.bin" to FAT-fomatted SD card. yes. I personally use SD boot mode it means boot.bin has just u-boot SPL and u-boot.img on SD stores full u-boot. Keep in your mind that using U-BOOT SPL is not fully supported flow. Supported flow is fsbl->u-boot->linux. > ##Kernel ## > [1] Build kernel with multi_v7_defconfig setting > [2] Copy uImage to the SD card > [3] Rename zynq-zc706.dtb into system.dtb > and copy to SD card this step just depend on your configuration. > > > Kernel boot failed to mount the root device. > > > My question is, how to pass an init ramdisk? I am using cpio compiled in directly in the kernel. > In which file-name should I copy init ramdisk > into SD card? Xilinx OSL versions are using initramdisk which you can download here. http://www.wiki.xilinx.com/Zynq+2014.1+Release > How should I load the init ramdisk from the SD card? And this is the command which OSL version are using. "sdboot=if mmcinfo; then " \ "run uenvboot; " \ "echo Copying Linux from SD to RAM... && " \ "fatload mmc 0 0x3000000 ${kernel_image} && " \ "fatload mmc 0 0x2A00000 ${devicetree_image} && " \ "fatload mmc 0 0x2000000 ${ramdisk_image} && " \ "bootm 0x3000000 0x2000000 0x2A00000; " \ "fi\0" \ You can probably add ramdisk_image to ITS format too. Thanks, Michal -- Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91 w: www.monstr.eu p: +42-0-721842854 Maintainer of Linux kernel - Microblaze cpu - http://www.monstr.eu/fdt/ Maintainer of Linux kernel - Xilinx Zynq ARM architecture Microblaze U-BOOT custodian and responsible for u-boot arm zynq platform
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