Differences

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--- en:bpi-r3:uboot [2022/10/10 07:11] – [building] frank
+++ en:bpi-r3:uboot [2023/01/29 19:18] – [writing emmc] frank
@@ Line 23: / Line 23: @@
   sudo dd if=build/mt7986/release/fip.bin of=/dev/sdb4
-ATF branch contains gpt file for flashing first and script to create basic image with bootchain
+ATF branch contains gpt file (gpt_sdmmc_100m6g.img) for flashing first and script to create basic image with bootchain
+  ./build.sh createimg
 ===== booting kernel =====
@@ Line 351: / Line 353: @@
   mmc bootbus 0 0 0 0
+instead of writing the gpt image file you can bootup a linux with initrd
+  BPI-R3> run useusb
+  BPI-R3> setenv initrd rootfs.cpio.zst
+  BPI-R3> setenv fit bpi-r3.itb
+  BPI-R3> run newboot
+and create gpt like i do it for [[https://github.com/frank-w/u-boot/blob/mtk-atf/build.sh#L114|sdcard]], original gpt uses same values for partitions and use a partition named gpt (0..33) instead of bl2 (34..8191)
+<code>
+sudo sgdisk -o ${LDEV}
+#sudo sgdisk -a 1 -n 1:34:8191 -A 1:set:2 -t 1:8300 -c 1:"bl2"		${LDEV} #sdcard only
+sudo sgdisk -a 1 -n 1:0:33 -A 1:set:2 -t 1:8300 -c 1:"gpt"		${LDEV} #emmc only
+sudo sgdisk -a 1 -n 2:8192:9215		-t 2:8300 -c 2:"u-boot-env"	${LDEV}
+sudo sgdisk -a 1 -n 3:9216:13311	-t 3:8300 -c 3:"factory"	${LDEV}
+sudo sgdisk -a 1 -n 4:13312:17407	-t 4:8300 -c 4:"fip"		${LDEV}
+sudo sgdisk -a 1024 -n 5:17408:${bootend} -t 5:8300 -c 5:"boot"		${LDEV}
+sudo sgdisk -a 1024 -n 6:${rootstart}:${rootend} -t 6:8300 -c 6:"rootfs" ${LDEV}
+</code>
 ===== chainload uboot =====