Khadas Docs

UBOOT EFI partitions dump

master@universe:/tmp/uboot$ sfdisk --dump /dev/sda
 
label: gpt
label-id: 73987B6B-4974-4C94-A3E8-58AB2EB7A946
device: /dev/sda
unit: sectors
first-lba: 34
last-lba: 31116254
 
/dev/sda1 : start=        2048, size=       16384, type=F808D051-1602-4DCD-9452-F9637FEFC49A, uuid=B750E44E-833F-4A30-C38C-B117241D84D4, name="uboot"

OOWOW SPL boot log

U-Boot SPL board init
U-Boot SPL 2017.09 (May 12 2023 - 11:40:17)
Failed to set cpub01
Failed to set cpub23
I2c2 speed: 100000Hz
MCU: boot mode 0x20: 1, flag 0x92: 3
MCU: boot flag < 83
board_boot_order: /chosen found, using spl_boot_device()
!!! same-as-spl: 
+++ /mmc@fe2e0000: 
!!! /mmc@fe2c0000: 
!!! /mmc@fe2e0000: 
!!! /spi@fe2b0000/flash@1: 
Trying to boot from MMC1 :: 0
Trying fit image at 0x4000 sector
Not fit magic
...

Write FIT image to eMMC or SD 0x4000 sector

For example 1st write https://dl.khadas.com/.test/edge2_UEFI_Release_3676af4b.img to USB flash, start OOWOW going into shell…

copy FIT image to eMMC

dd if=/dev/sda skip=2048 count=3440 seek=$((0x4000)) of=/dev/mmcblk0

or just using oowow with Internet, start OOWOW going into shell…

oowow copy EFI loader to eMMC

root@edge2-00000:/# curl -jkL \
 https://dl.khadas.com/.test/edge2_UEFI_Release_3676af4b.img \
 -r$((2048*512))-$(((2048+3440)*512)) | dd seek=$((0x4000)) of=$(mmc_disk)

check eMMC

root@edge2-00000:/# dd if=/dev/mmcblk0 skip=$((0x4000)) count=1 | hexdump -C
 
1+0 records in
1+0 records out
512 bytes copied, 0.000668208 s, 766 kB/s
00000000  d0 0d fe ed 00 00 08 b3  00 00 00 38 00 00 07 e8  |...........8....|
00000010  00 00 00 28 00 00 00 11  00 00 00 10 00 00 00 00  |...(............|
00000020  00 00 00 cb 00 00 07 b0  00 00 00 00 00 00 00 00  |................|
00000030  00 00 00 00 00 00 00 00  00 00 00 01 00 00 00 00  |................|
00000040  00 00 00 03 00 00 00 04  00 00 00 a7 00 00 00 00  |................|
00000050  00 00 00 03 00 00 00 04  00 00 00 9d 00 1a da 57  |...............W|
00000060  00 00 00 03 00 00 00 04  00 00 00 93 64 5d 13 d5  |............d]..|
00000070  00 00 00 03 00 00 00 1f  00 00 00 00 46 49 54 20  |............FIT |
00000080  49 6d 61 67 65 20 77 69  74 68 20 41 54 46 2f 4f  |Image with ATF/O|
00000090  50 2d 54 45 45 2f 55 45  46 49 00 00 00 00 00 03  |P-TEE/UEFI......|
000000a0  00 00 00 04 00 00 00 0c  00 00 00 01 00 00 00 01  |................|
000000b0  69 6d 61 67 65 73 00 00  00 00 00 01 75 62 6f 6f  |images......uboo|
000000c0  74 00 00 00 00 00 00 03  00 00 00 04 00 00 00 c1  |t...............|
000000d0  00 10 00 00 00 00 00 03  00 00 00 04 00 00 00 b5  |................|
000000e0  00 00 00 00 00 00 00 03  00 00 00 05 00 00 00 00  |................|
000000f0  55 45 46 49 00 00 00 00  00 00 00 03 00 00 00 0b  |UEFI............|
00000100  00 00 00 20 73 74 61 6e  64 61 6c 6f 6e 65 00 00  |... standalone..|
00000110  00 00 00 03 00 00 00 06  00 00 00 25 61 72 6d 36  |...........%arm6|
00000120  34 00 00 00 00 00 00 03  00 00 00 07 00 00 00 2a  |4..............*|
00000130  55 2d 42 6f 6f 74 00 00  00 00 00 03 00 00 00 05  |U-Boot..........|
00000140  00 00 00 2d 6e 6f 6e 65  00 00 00 00 00 00 00 03  |...-none........|
00000150  00 00 00 04 00 00 00 39  00 20 00 00 00 00 00 01  |.......9. ......|
00000160  68 61 73 68 00 00 00 00  00 00 00 03 00 00 00 20  |hash........... |
00000170  00 00 00 af 43 5a 62 74  4c df d5 01 33 2d 58 d0  |....CZbtL...3-X.|
00000180  28 fe b1 37 45 eb 6c e5  84 f6 e9 f6 ca 69 77 af  |(..7E.l......iw.|
00000190  5f 8b c8 a5 00 00 00 03  00 00 00 07 00 00 00 3e  |_..............>|
000001a0  73 68 61 32 35 36 00 00  00 00 00 02 00 00 00 02  |sha256..........|
000001b0  00 00 00 01 61 74 66 2d  31 00 00 00 00 00 00 03  |....atf-1.......|
000001c0  00 00 00 04 00 00 00 c1  00 02 f7 64 00 00 00 03  |...........d....|
000001d0  00 00 00 04 00 00 00 b5  00 10 00 00 00 00 00 03  |................|
000001e0  00 00 00 15 00 00 00 00  41 52 4d 20 54 72 75 73  |........ARM Trus|
000001f0  74 65 64 20 46 69 72 6d  77 61 72 65 00 00 00 00  |ted Firmware....|
00000200

UBOOT SPL EFI logs

Trying to boot from MMC1 :: 1
Trying fit image at 0x4000 sector
## Verified-boot: 0
## Checking atf-1 0x00040000 ... sha256(909ea14106...) + OK
## Checking uboot 0x00200000 ... sha256(435a62744c...) + OK
## Checking fdt 0x00300000 ... sha256(c07f4a4d71...) + OK
## Checking atf-2 0x000f0000 ... sha256(6a970ae6b4...) + OK
## Checking atf-3 0xff100000 ... sha256(3ea8cf0d7e...) + OK
## Checking optee 0x08400000 ... sha256(fde0860845...) + OK
Jumping to U-Boot(0x00200000) via ARM Trusted Firmware(0x00040000)
Total: 126.537 ms
...
UEFI firmware (version 3676af4b built at 16:11:00 on May 11 2023)
...

• https://opensource.rock-chips.com/wiki_Boot_option
• https://opensource.rock-chips.com/wiki_U-Boot
• https://dl.khadas.com/.test/edge2_UEFI_Release_3676af4b.img