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--- en:bpi-r3:uboot [2023/04/07 10:51] – [kernel/initrd] frank
+++ en:bpi-r3:uboot [2024/04/07 09:38] – [writing emmc] frank
@@ Line 69: / 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 202: / Line 202: @@
 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 244: / Line 258: @@
 </code>
 ===== writing emmc =====
+:!: newest atf for mediatek needs gpt with fip partition so it must be created first (maybe copy first 1mM from sdcard to emmc).
 get emmc/gpt information:
@@ Line 391: / 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 417: / Line 454: @@
 BPI-R3>
 </code>
+</hidden>
 If boot from emmc does not work,maybe bootbus needs to be changed to 0: