Hi Dr. Chubb, Thank you for your response. I tried it, but when the boot process hangs after as shown in the following. (I did not delete the default kernel in MMC)
U-Boot 2018.03-rc3-00090-g3990c9d (Mar 01 2018 - 14:33:40 -0500) TEGRA124 Model: Colorado Engineering TK1-SOM Board: CEI tk1-som DRAM: 2 GiB MMC: sdhci@700b0400: 1, sdhci@700b0600: 0 Loading Environment from MMC... OK In: serial Out: serial Err: serial Net: No ethernet found. Hit any key to stop autoboot: 0 Card did not respond to voltage select! switch to partitions #0, OK mmc0(part 0) is current device Scanning mmc 0:1... Found /boot/extlinux/extlinux.conf Retrieving file: /boot/extlinux/extlinux.conf 839 bytes read in 139 ms (5.9 KiB/s) Jetson-TK1 eMMC boot options 1: primary kernel Enter choice: 1: primary kernel Retrieving file: /boot/zImage 6090032 bytes read in 187 ms (31.1 MiB/s) append: console=ttyS0,115200n8 console=tty1 no_console_suspend=1 lp0_vec=2064@0xf46ff000 mem=2015M@2048M mem=6144M@4096M memtype=1 ddr_die=2048M@2048M ddr_die=6144M@4096M vmalloc=300M section=256M pmuboard=0x0177:0x0000:0x02:0x43:0x00 tsec=32M@3913M otf_key=c75e5bb91eb3bd947560357b64422f85 usbcore.old_scheme_first=1 core_edp_mv=1150 core_edp_ma=4000 tegraid=40.1.1.0.0 debug_uartport=lsport,3 power_supply=Adapter modem_id=0 android.kerneltype=normal fbcon=map:1 commchip_id=0 usb_port_owner_info=2 lane_owner_info=1 emc_max_dvfs=0 touch_id=0@0 board_info=0x0177:0x0000:0x02:0x43:0x00 root=/dev/mmcblk0p1 rw rootwait tegraboot=sdmmc gpt Retrieving file: /boot/tegra124-tk1-som-pm375-000-c00-00.dtb 57253 bytes read in 274 ms (203.1 KiB/s) ## Flattened Device Tree blob at 82000000 Booting using the fdt blob at 0x82000000 Using Device Tree in place at 82000000, end 82010fa4 Starting kernel ... Best Regards -Daniel Wang > On Oct 10, 2018, at 11:30 PM, <[email protected]> > <[email protected]> wrote: > > Hi Daniel, > You shouldn't have to reflash to boot the original Linux. If you > want to, use Nvidia's L4T tool. But try to reset the secure mode > booting by doing > setenv bootm_boot_mode sec > saveenv > at the u-boot prompt. This should enable the original kernel to > boot. > > Peter C > -- > Dr Peter Chubb Tel: +61 2 9490 5852 http://ts.data61.csiro.au/ > Trustworthy Systems Group Data61, CSIRO (formerly NICTA)
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