New image is loaded in eMMC. Works fine. Now I want to explore u-boot (i.e. boot from sd-card with no kernel)
Before I used this format-sdcard.sh script <https://github.com/PacktPublishing/Mastering-Embedded-Linux-Programming-Second-Edition> that formats sd-card and creates two partitions FAT32 (*boot*) and ext4 (*rootfs* ). Then, after building the u-boot I copied *u-boot.img* and *MLO *in the *boot *partition of sd-card. The book where this approach is described was written in 2017 and obviously worked well with v2017 branch of *u-boot*. With my crosstoolchain I couldn't build 2017 branch of *u-boot*. I succeeded with 'master' branch of *u-boot *(also with another configuration). But with *u-boot.img* and *MLO* originated from 'master' branch (then copied to the *boot *folder on sd-card) the boot process from sd-card couldn't successfully terminate. So here is a couple questions (in order to use 'master branch of u-boot): - how format sd-card - where to copy *u-boot.img* and *MLO *(in the root ... or in some partition). Thanks. On Friday, August 21, 2020 at 5:11:29 PM UTC+2, RobertCNelson wrote: > > On Fri, Aug 21, 2020 at 9:29 AM Pavel Yermolenko <[email protected] > <javascript:>> wrote: > > > > Here is my sd-card: > > > > debian@beaglebone:~$ lsblk > > NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT > > mmcblk1 179:0 0 3.6G 0 disk > > └─mmcblk1p1 179:1 0 3.6G 0 part / > > mmcblk1boot0 179:8 0 2M 1 disk > > mmcblk1boot1 179:16 0 2M 1 disk > > mmcblk1rpmb 179:24 0 512K 0 disk > > mmcblk0 179:32 0 14.9G 0 disk > > ├─mmcblk0p1 179:33 0 64M 0 part > > └─mmcblk0p2 179:34 0 1G 0 part > > > > I executed script without modifs: > > debian@beaglebone:/opt/scripts/tools$ sudo ./generate_extlinux.sh > > [sudo] password for debian: > > debian@beaglebone:/opt/scripts/tools$ > > > > But nothing changed on sd-card. > > I still see u-boot.img and MLO in /boot. > > Shakes head, i haven't tested for the old "dual partition" setup in > years.. I killed it back in 2014 and moved to a single ext4 partition > ever since. > > Sorry, it's just never tested.. > > Regards, > > -- > Robert Nelson > https://rcn-ee.com/ > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/259dd07a-d786-4f8f-8953-84764eef4edeo%40googlegroups.com.
