Closed karthikbhat77 closed 9 years ago
zhemao
commented
9 years ago Strange, that sequence of commands is very different from my u-boot commands. Could you do the following to get some more info?
printenv
karthikbhat77
commented
9 years ago So, "bootz" is supposed to be the command to boot zImage. Yes, I checked the environment variables and its referring to 'bootz'. Here's the output....
SOCFPGA_CYCLONE5 # printenv ECC_SDRAM=0 ECC_SDRAM_DBE=0 ECC_SDRAM_SBE=0 axibridge=ffd0501c axibridge_handoff=0x00000000 baudrate=115200 bootargs=console=ttyS0,115200 root=/dev/mmcblk0p2 rw rootwait bootcmd=run callscript;run mmcload;run bridge_enable_handoff;run mmcboot bootdelay=5 bootimage=zImage bootimagesize=0x600000 bridge_disable=mw $fpgaintf 0; mw $fpga2sdram 0; mw $axibridge 0; mw $l3remap 0x1; echo fpgaintf; md $fpgaintf 1; echo fpga2sdram; md $fpga2sdram 1; echo axibridge; md $axibridge 1 bridge_enable_handoff=mw $fpgaintf ${fpgaintf_handoff}; mw $fpga2sdram ${fpga2sdram_handoff}; mw $axibridge ${axibridge_handoff}; mw $l3remap ${l3remap_handoff}; echo fpgaintf; md $fpgaintf 1; echo fpga2sdram; md $fpga2sdram 1; echo axibridge; md $axibridge 1 callscript=if fatload mmc 0:1 $fpgadata $scriptfile;then source $fpgadata; else echo Optional boot script not found. Continuing to boot normally; fi; ethact=mii0 fdtaddr=0x00000100 fdtimage=socfpga.dtb fdtimagesize=0x5000 filesize=3FA1 fpga=0 fpga2sdram=ffc25080 fpga2sdram_handoff=0x00000000 fpgadata=0x2000000 fpgadatasize=0x700000 fpgaintf=ffd08028 fpgaintf_handoff=0x00000000 l3remap=ff800000 l3remap_handoff=0x00000019 loadaddr=0x8000 micrel-ksz9021-clk-skew=0xf0f0 micrel-ksz9021-data-skew=0x0 mmcboot=setenv bootargs console=ttyS0,115200 root=${mmcroot} rw rootwait;bootz ${loadaddr} - ${fdtaddr} mmcload=mmc rescan;${mmcloadcmd} mmc 0:${mmcloadpart} ${loadaddr} ${bootimage};${mmcloadcmd} mmc 0:${mmcloadpart} ${fdtaddr} ${fdtimage} mmcloadcmd=fatload mmcloadpart=1 mmcroot=/dev/mmcblk0p2 netboot=dhcp ${bootimage} ; tftp ${fdtaddr} ${fdtimage} ; run ramboot qspiboot=setenv bootargs console=ttyS0,115200 root=${qspiroot} rw rootfstype=${qspirootfstype};bootz ${loadaddr} - ${fdtaddr} qspibootimageaddr=0xa0000 qspifdtaddr=0x50000 qspiload=sf probe ${qspiloadcs};sf read ${loadaddr} ${qspibootimageaddr} ${bootimagesize};sf read ${fdtaddr} ${qspifdtaddr} ${fdtimagesize}; qspiloadcs=0 qspiroot=/dev/mtdblock1 qspirootfstype=jffs2 ramboot=setenv bootargs console=ttyS0,115200;bootz ${loadaddr} - ${fdtaddr} scriptfile=u-boot.scr stderr=serial stdin=serial stdout=serial verify=n
I tried to boot using bootm command but it gives an error saying "wrong image format for bootm command".
Who sets the default environment variables as seen above? Is it uboot-mkimage tool? How can I make it set "boot" to be the default command to boot using uImage? This error is basically generated because u-boot is missing "bootz" command. And as we can see above, it is looking for "bootz" command. So, when I google for 'bootz' command I find a patch. I don't know how to patch it to the u-boot.
karthikbhat77
commented
9 years ago Hi Howard,
Today I was trying to edit environment variables, to change "bootz" to "bootm" command in it and I messed up. So, I formatted the whole SD card and re-wrote all the images (used shred command to format). To my surprise, even after I re-wrote all the images the environment variables were the same as I edited. It is then that it occurred to me that I had previously written binaries from Rocketboards.org on the same memory card which had the environment variables set to point to "bootz" command. I had formatted the sd card before I wrote images created from your tutorial. I don't know why the environment variables weren't deleted.
So, then I had another SD card and wrote the images generated using your tutorial and it no longer points to "bootz" command. Here's the transcript...
U-Boot SPL 2012.10 (Apr 02 2013 - 18:25:57) SDRAM : Initializing MMR registers SDRAM : Calibrationg PHY SEQ.C: Preparing to start memory calibration SEQ.C: CALIBRATION PASSED DESIGNWARE SD/MMC: 0
U-Boot 2012.10 (Feb 28 2013 - 21:33:41)
CPU : Altera SOCFPGA Platform BOARD : Altera SOCFPGA Cyclone 5 Board DRAM: 1 GiB MMC: DESIGNWARE SD/MMC: 0 *\ Warning - bad CRC, using default environment
In: serial Out: serial Err: serial Net: mii0 Warning: failed to set MAC address
Hit any key to stop autoboot: 0 reading uImage
3186312 bytes read reading socfpga.dtb
16289 bytes read
Image Name: Linux-3.9.0-00161-ged01b8c Image Type: ARM Linux Kernel Image (uncompressed) Data Size: 3186248 Bytes = 3 MiB Load Address: 00008000 Entry Point: 00008000 ERROR: Did not find a cmdline Flattened Device Tree Could not find a valid device tree SOCFPGA_CYCLONE5 #
Now, I don't understand why I'm getting this error. Could you please help me out.
Thank you, Karthik
karthikbhat77
commented
9 years ago I got the OS to boot up today!
It looks like this particular SD card I am using wasn't getting formatted properly on a virtual machine. I was running Ubuntu 14 on VirtualBox. I then formatted on a laptop running ubuntu and re-wrote the SD card. It booted up just fine!
Thanks for this amazing tutorial. Could you also put up the steps you did to create the "bootloader.img". I would like to learn how to do it so I'll know the whole procedure.
Thanks again, Karthik
Hi Howard,
I'm trying to install linux on SoCkit and I'm following your tutorial. I got through all the steps and wrote the images on to the SD card. But when I try to boot I get an error saying "Unknown command 'bootz' - try help".
Could you please help me with this.
I'm using Ubuntu 14.04 on Virtualbox to do the whole process - if this helps. The error is shown below:
U-Boot 2012.10 (Feb 28 2013 - 21:33:41)
CPU : Altera SOCFPGA Platform BOARD : Altera SOCFPGA Cyclone 5 Board DRAM: 1 GiB MMC: DESIGNWARE SD/MMC: 0 In: serial Out: serial Err: serial Net: mii0 Warning: failed to set MAC address
Hit any key to stop autoboot: 0 reading u-boot.scr
\ Unable to read "u-boot.scr" from mmc 0:1 ** Optional boot script not found. Continuing to boot normally reading zImage
3186248 bytes read reading socfpga.dtb
16289 bytes read fpgaintf ffd08028: 00000000 .... fpga2sdram ffc25080: 00000000 .... axibridge ffd0501c: 00000000 .... Unknown command 'bootz' - try 'help' SOCFPGA_CYCLONE5 #