How to boot Linux from EMMC?

[BuddyZhang1]

On new board OrangePi Zero plus2 base on H5, OrangePi offer a slice of EMMC.
User can use EMMC as disk or boot system from EMMC. Now, I'm doing correlative work to boot from
EMMC, and I have wrote some scripts to utilize EMMC as disk, it can store data.
But I got some error when I boot system from EMMC, I can't fix this error:

boot0
When I boot boot0 from EMMC, the system can't work well, dead follow information:

HELLO! BOOT0 is starting!
boot0 commit : e49ebc044423f7912cddca46b4670b1891fe39d5
 
boot0 version : 4.0
set pll start
set pll end
rtc[0] value = 0x00000000
rtc[1] value = 0x00000000
rtc[2] value = 0x00000000
rtc[3] value = 0x00000000
rtc[4] value = 0x00000000
rtc[5] value = 0x00000000
DRAM BOOT DRIVE INFO: V0.6
the chip id is 0x00000001
the chip id is 0x00000001
the chip id is 0x00000001
the chip id is 0x00000001
the chip id is 0x00000001
axp not exist
DRAM CLK =672 MHZ
DRAM Type =3 (2:DDR2,3:DDR3,6:LPDDR2,7:LPDDR3)
DRAM zq value: 0x003b3bf9
DRAM SIZE =512 M
DRAM simple test OK.
dram size =512
card no is 2
sdcard 2 line count 8
[mmc]: mmc driver ver 2016-03-15 20:40
[mmc]: Wrong media type 0x00000000
[mmc]: ***Try SD card 2***
[mmc]: mmc 2 cmd 8 timeout, err 00000100
[mmc]: mmc 2 cmd 8 err 00000100
[mmc]: mmc 2 send if cond failed
[mmc]: mmc 2 cmd 55 timeout, err 00000100
[mmc]: mmc 2 cmd 55 err 00000100
[mmc]: mmc 2 send app cmd failed
[mmc]: ***Try MMC card 2***
[mmc]: MMC 5.0
[mmc]: HSDDR52/DDR50 8 bit
[mmc]: 50000000 Hz
[mmc]: 7456 MB
[mmc]: ***SD/MMC 2 init OK!!!***
[mmc]: mmc 2 data timeout, err 00000080
[mmc]: mmc 2 cmd 18 err 00000080
[mmc]: mmc 2  read blcok failed
[mmc]: mmc 2 block read failed
PANIC : sunxi_flash_init() error --1--
Ready to disable icache.

..... What should I do to fix this error _

[BuddyZhang1]

This log is from Android, the system can boot from EMMC

HELLO! BOOT0 is starting!
boot0 commit : 8 
boot0 version : 4.0
set pll start
set pll end
rtc[0] value = 0x00000000
rtc[1] value = 0x00000000
rtc[2] value = 0x00000000
rtc[3] value = 0x00000000
rtc[4] value = 0x00000000
rtc[5] value = 0x00000000
DRAM BOOT DRIVE INFO: V0.6
the chip id is 0x00000001
the chip id is 0x00000001
the chip id is 0x00000001
the chip id is 0x00000001
the chip id is 0x00000001
axp not exist
DRAM CLK =672 MHZ
DRAM Type =3 (2:DDR2,3:DDR3,6:LPDDR2,7:LPDDR3)
DRAM zq value: 0x003b3bf9
DRAM SIZE =512 M
DRAM simple test OK.
dram size =512
card no is 2
sdcard 2 line count 8
[mmc]: mmc driver ver 2016-03-15 20:40
[mmc]: ***Try MMC card 2***
[mmc]: MMC 5.0
[mmc]: HSDDR52/DDR50 8 bit
[mmc]: 50000000 Hz
[mmc]: 7456 MB
[mmc]: ***SD/MMC 2 init OK!!!***
sum=9a394ca1
src_sum=9a394ca1
read boot-pkg from emmc 32800 sector
Succeed in loading uboot from sdmmc flash.
Entry_name        = u-boot
Entry_name        = monitor
Entry_name        = scp

[Shaggy013]

i'm no expert of things but did you looked for example at a fex from a board with mmc ?

just looked at the oppclus fex and is there nand ?

[BuddyZhang1]

@Shaggy013
I fix some update error. It should be mmc not nand.