sgufa
March 31, 2020, 3:32pm
1
Hi, any advice to create eMMC flashable image and how to flash it?
@sgufa , it wouldn’t take too much to convert the “flasher’s” we use for BeagleBoard.org products…
The biggest gotcha, is the STM32MP15x’s need sgdisk, which isn’t usually installed by default…
https://www.digikey.com/eewiki/display/linuxonarm/STM32MP1#STM32MP1-SetupmicroSDcard
Here’s a quick example from for the BeagleBone’s eMMC flasher
#!/bin/bash -e
#
# Copyright (c) 2013-2018 Robert Nelson <robertcnelson@gmail.com>
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show original
First to get converted would be sfdisk -> sgdisk
sfdisk_options="--force --Linux --in-order --unit M"
sfdisk_boot_startmb="${conf_boot_startmb}"
test_sfdisk=$(LC_ALL=C sfdisk --help | grep -m 1 -e "--in-order" || true)
if [ "x${test_sfdisk}" = "x" ] ; then
message="sfdisk: [2.26.x or greater]" ; broadcast
if [ "x${bootrom_gpt}" = "xenable" ] ; then
sfdisk_options="--force --label gpt"
else
sfdisk_options="--force"
fi
sfdisk_boot_startmb="${sfdisk_boot_startmb}M"
fi
message="sfdisk: [$(LC_ALL=C sfdisk --version)]" ; broadcast
message="sfdisk: [sfdisk ${sfdisk_options} ${destination}]" ; broadcast
message="sfdisk: [${sfdisk_boot_startmb},,${sfdisk_fstype},*]" ; broadcast
LC_ALL=C sfdisk ${sfdisk_options} "${destination}" <<-__EOF__
${sfdisk_boot_startmb},,${sfdisk_fstype},*
__EOF__
You could script it, or just hard code the values…
sudo sgdisk -o ${DISK}
sudo sgdisk --resize-table=128 -a 1 \
-n 1:34:545 -c 1:fsbl1 \
-n 2:546:1057 -c 2:fsbl2 \
-n 3:1058:5153 -c 3:ssbl \
-n 4:5154: -c 4:rootfs \
-p ${DISK}
sudo sgdisk -A 4:set:2 ${DISK}
Then the booloader install would be converted from 2 dd’s to 3 dd’s here:
Then convert all “1” ext4 partition’s would need to be converted to STM32MP’s “4th” ext partition configuration. (luckily other than dd’ing into Partition 1, 2, and 3 not much needs to be done with them…
Regards,
sgufa
April 1, 2020, 7:39am
3
Hello Robert,
Zouqz
September 25, 2021, 3:40am
5
Hello Robert,
