Tool/software:
Hi,
When using MCU+SDK Falcon mode, we encountered the following problems when starting to kernel stage:
[ 2.635963] /dev/root: Can't open blockdev [ 2.640098] VFS: Cannot open root device "(null)" or unknown-block(0,0): error -6 [ 2.647581] Please append a correct "root=" boot option; here are the available partitions: [ 2.655962] b300 30539776 mmcblk0 [ 2.655969] driver: mmcblk [ 2.662793] b301 131072 mmcblk0p1 3f4cc94b-01 [ 2.662801] [ 2.669621] b302 10485760 mmcblk0p2 3f4cc94b-02 [ 2.669628] [ 2.676436] b303 10485760 mmcblk0p3 3f4cc94b-03 [ 2.676442] [ 2.683236] b304 4194304 mmcblk0p4 3f4cc94b-04 [ 2.683241] [ 2.690047] b320 32640 mmcblk0boot0 [ 2.690052] (driver?) [ 2.696846] b340 32640 mmcblk0boot1 [ 2.696851] (driver?) [ 2.703645] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) [ 2.711901] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.1.80-ti-g2e423244f8c0 #1 [ 2.719290] Hardware name: Texas Instruments AM62A7 SK (DT) [ 2.724854] Call trace: [ 2.727294] dump_backtrace.part.0+0xdc/0xf0 [ 2.731570] show_stack+0x18/0x30 [ 2.734882] dump_stack_lvl+0x68/0x84 [ 2.738544] dump_stack+0x18/0x34 [ 2.741856] panic+0x188/0x348 [ 2.744908] mount_block_root+0x188/0x23c [ 2.748916] mount_root+0x208/0x248 [ 2.752399] prepare_namespace+0x130/0x170 [ 2.756490] kernel_init_freeable+0x258/0x284 [ 2.760841] kernel_init+0x24/0x130 [ 2.764328] ret_from_fork+0x10/0x20 [ 2.767902] SMP: stopping secondary CPUs [ 2.771820] Kernel Offset: 0x80000 from 0xffff800008000000 [ 2.777296] PHYS_OFFSET: 0x80000000 [ 2.780778] CPU features: 0x00000,00900084,0000420b [ 2.785649] Memory Limit: none [ 2.788702] ---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) ]---
We tried to add the following code to the device tree, but it didn't work.
bootargs="...... root=/dev/mmcblk0p2 ......"
How to solve this problem?
In falcon, Image and k3-am62a7-sk.dtb of board-support/ prebuild-images are used. I would like to know the difference between these two files and normal kernel files.
How do I generate the kernel files used in falcon?
