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--- en:bpi-r3:uboot [2022/10/10 07:11] – [building] frank
+++ en:bpi-r3:uboot [2024/04/07 09:39] (current) – [writing emmc] frank
@@ Line 1: / Line 1: @@
 ====== U-Boot ======
+[[https://u-boot.readthedocs.io/en/latest/develop/release_cycle.html#current-status|Release cycle]]
 Mtk uboot: https://github.com/mtk-openwrt/u-boot
@@ Line 23: / Line 25: @@
   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 65: / Line 69: @@
   BPI-R3> run newboot
-  #using spi dt-overlay
+  #using dt-overlay config
   BPI-R3> setenv bootconf "#conf-sd-nor" #conf-sd-nor=sd base dts + nor dt overlay
@@ Line 82: / Line 86: @@
 Bootup with sdcard (put spi-nand bl2 + fip with emmc-and usb-support as files on card) and flash them like described [[#nand_flash|here]] then boot from spi (sw2 to boot from spi-nand + change sw6 to have access to emmc) and then [[#writing_emmc|flash emmc]]. Finally change sw2 back to boot from emmc and sw1 has to be changed too.
 ===== nand flash =====
+https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3-nand.dtso
 <code>
@@ Line 133: / Line 139: @@
 </code>
+===== nor flash =====
+https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3-nor.dtso
+<code>
+MT7986> sf probe
+SF: Detected w25q256 with page size 256 Bytes, erase size 4 KiB, total 32 MiB
+MT7986> sf erase 0 0x180000
+SF: 1572864 bytes @ 0x0 Erased: OK
+MT7986> fatload usb 0:1 ${loadaddr} 2023.04/bpi-r3_nor_bl2.img
+bytes read in 21 ms (9.2 MiB/s)
+MT7986> sf write ${loadaddr} 0 0x40000
+device 0 offset 0x0, size 0x40000
+SF: 262144 bytes @ 0x0 Written: OK
+MT7986> fatload usb 0:1 ${loadaddr} 2023.04/bpi-r3_nor_fip.bin
+bytes read in 25 ms (9.7 MiB/s)
+MT7986> sf write ${loadaddr} 0x100000 0x80000
+device 0 offset 0x100000, size 0x80000
+SF: 524288 bytes @ 0x100000 Written: OK
+</code>
+if you get this error on bootup
+  NOTICE:  BL31: Built : 20:24:28, Apr  5 2023
+  No valid device tree binary found at 0000000041e92f20
+  initcall sequence 0000000041e621a8 failed at call 0000000041e57800 (err=-2)
+  ### ERROR ### Please RESET the board ###
+you need to compress bl31
+  xz -f -e -k -9 -C crc32 u-boot.bin
+and use the resulting u-boot.bin.xz as BL33
+==== kernel/initrd ====
+currently untested...
+<code>
+label = "recovery"; //initrd max 10MB
+reg = <0x180000 0xa80000>;
+label = "fit"; //kernel max 20MB
+reg = <0xc00000 0x1400000>;
+</code>
+<code>
+MT7986> sf probe
+SF: Detected w25q256 with page size 256 Bytes, erase size 4 KiB, total 32 MiB
+MT7986> sf erase 0x180000 0xa80000
+SF: 11010048 bytes @ 0x180000 Erased: OK
+MT7986> fatload usb 0:1 ${loadaddr} rootfs_bpi-r3.cpio.zst
+9501203 bytes read in 798 ms (11.4 MiB/s)
+MT7986> sf write ${loadaddr} 0x180000 ${filesize}
+device 0 offset 0x180000, size 0x90fa13
+SF: 9501203 bytes @ 0x180000 Written: OK
+MT7986> sf erase 0xc00000 0x1400000
+SF: 20971520 bytes @ 0xc00000 Erased: OK
+MT7986> fatload usb 0:1 ${loadaddr} bpi-r3-6.1.itb
+8424540 bytes read in 708 ms (11.3 MiB/s)
+MT7986> sf write ${loadaddr} 0xc00000 ${filesize}
+device 0 offset 0xc00000, size 0x808c5c
+SF: 8424540 bytes @ 0xc00000 Written: OK
+</code>
+loading it:
+<code>
+MT7986> setenv useinitrd 'setenv root "/dev/ram0 rw";setenv bootopts "${bootopts} initrd=${rdaddr},20M";'
+MT7986> sf read ${rdaddr} 0x180000 0xa80000
+device 0 offset 0x180000, size 0xa80000
+SF: 11010048 bytes @ 0x180000 Read: OK
+MT7986> sf read ${kaddr} 0xc00000 0x1400000
+device 0 offset 0xc00000, size 0x1400000
+SF: 20971520 bytes @ 0xc00000 Read: OK
+MT7986> setenv bootnor 'run useinitrd;run setbootconf; run buildargs; bootm ${kaddr}${bootconf};'
+MT7986> run bootnor
+</code>
 ===== usb =====
@@ Line 174: / Line 258: @@
 </code>
 ===== writing emmc =====
+:!: newest atf for mediatek needs gpt with fip partition so it must be created first (maybe copy first 1M from sdcard to emmc).
 get emmc/gpt information:
@@ Line 321: / Line 407: @@
 now flash bl2 to boot0 block and fip to fip partition
+short way using my environment:
+<code>
+MT7986> setenv bl2file 2023.04/bpi-r3_emmc_bl2.img
+MT7986> setenv fipfile 2023.04/bpi-r3_emmc_fip.bin
+MT7986> run wremmc
+bl2file=2023.04/bpi-r3_emmc_bl2.img
+bytes read in 20 ms (9.3 MiB/s)
+MMC erase: dev # 0, block # 0, count 1024 ... 1024 blocks erased: OK
+MMC write: dev # 0, block # 0, count 1024 ... 1024 blocks written: OK
+fipfile=2023.04/bpi-r3_emmc_fip.bin
+bytes read in 58 ms (10.6 MiB/s)
+MMC erase: dev # 0, block # 13312, count 4096 ... 4096 blocks erased: OK
+MMC write: dev # 0, block # 13312, count 4096 ... 4096 blocks written: OK
+</code>
+manual way:
+<hidden>
 <code>
 BPI-R3> mmc dev 0
@@ Line 347: / Line 454: @@
 BPI-R3>
 </code>
+</hidden>
 If boot from emmc does not work,maybe bootbus needs to be changed to 0:
   mmc bootbus 0 0 0 0
+instead of writing the gpt image file you can bootup a linux with initrd
+you get all files here: https://drive.google.com/drive/folders/1ZsJ2jsOieg_6HM4LHWUimROX5p5Kx7vo?usp=share_link
+  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 =====