Other Parts Discussed in Thread: WL1835MOD
HI,
Working on Latest BBB+WL1835MOD cape. I am booting the latest pre-built image from Wiki and I am able to boot from SD card. After I booted from SD card I did some changes in the EMMC partition. I added a uEnv.txt file to /boot/uboot directory of EMMC partition. Now when I start booting from EMMC it goes in loops again and again. Seems like some thing went wrong.
It gives the following message repetitively on the Serial port:
========================
U-Boot SPL 2014.04-00014-g47880f5 (Apr 22 2014 - 13:23:54)
reading args
spl_load_image_fat_os: error reading image args, err - -1
reading u-boot.img
reading u-boot.img
U-Boot 2014.04-00014-g47880f5 (Apr 22 2014 - 13:23:54)
I2C: ready
DRAM: 512 MiB
NAND: 0 MiB
MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1
*** Warning - readenv() failed, using default environment
Net: <ethaddr> not set. Validating first E-fuse MAC
cpsw, usb_ether
Hit any key to stop autoboot: 0
gpio: pin 53 (gpio 53) value is 1
mmc0 is current device
gpio: pin 54 (gpio 54) value is 1
SD/MMC found on device 0
reading uEnv.txt
** Unable to read file uEnv.txt **
Checking if uenvcmd is set ...
uenvcmd was not defined in uEnv.txt ...
gpio: pin 56 (gpio 56) value is 0
gpio: pin 55 (gpio 55) value is 0
gpio: pin 54 (gpio 54) value is 0
mmc1(part 0) is current device
gpio: pin 54 (gpio 54) value is 1
SD/MMC found on device 1
reading uEnv.txt
1029 bytes read in 4 ms (251 KiB/s)
gpio: pin 55 (gpio 55) value is 1
Loaded environment from uEnv.txt
Importing environment from mmc ...
Checking if uenvcmd is set ...
gpio: pin 56 (gpio 56) value is 1
Running uenvcmd ...
reading zImage
data abort
pc : [<9f76b5a0>] lr : [<9f74bb2c>]
sp : 9f629d08 ip : 9f769d68 fp : 00000850
r10: 00000200 r9 : 9f62af28 r8 : 00000080
r7 : 00000000 r6 : 0038ba00 r5 : 00000020 r4 : 481d8100
r3 : 00000000 r2 : e1a00000 r1 : 00000850 r0 : 00000000
Flags: Nzcv IRQs off FIQs on Mode SVC_32
Resetting CPU ...
resetting ...
=======================================
When I press Ctrl+Citgoesto Uboot prompt. Can I do some thing here?
But Still I am able to boot from SD card. When I boot from SD card, the EMMC partition is not visible to be. I cannot modify the contents in the emmc.
++++++++++++++++++
root@am335x-evm:~# fdisk -l
Disk /dev/mmcblk0: 15.9 GB, 15931539456 bytes, 31116288 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/mmcblk0p1 * 63 144584 72261 c W95 FAT32 (LBA)
/dev/mmcblk0p2 160650 31101839 15470595 83 Linux
root@am335x-evm:~# df -k
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/root 15096680 708868 13614284 5% /
devtmpfs 241644 4 241640 0% /dev
tmpfs 16384 556 15828 3% /var/volatile
tmpfs 254104 0 254104 0% /dev/shm
tmpfs 16384 0 16384 0% /media/ram
/dev/mmcblk0p1 71133 488 70646 1% /var/volatile/run/media/mmcblk0p1
++++++++++++++++++++++
Please advise on how can I revert back to the original form and delete the uEnv.txt from emmc partition.
Regrads
Puneet
