boot0 version : 3.1.0
dram size =512
card boot number = 2
card no is 2
sdcard 2 line count 0
[mmc]: mmc driver ver 2014-04-3 16:20
[mmc]: ***Try SD card 2***
[mmc]: mmc 2 cmd 8 timeout, err 0x00000100
[mmc]: mmc 2 cmd 8 err 0x00000100
[mmc]: mmc 2 send if cond failed
[mmc]: mmc 2 cmd 55 timeout, err 0x00000100
[mmc]: mmc 2 cmd 55 err 0x00000100
[mmc]: mmc 2 send app cmd failed
[mmc]: ***Try MMC card 2***
[mmc]: MMC ver 4.5
[mmc]: SD/MMC Card: 4bit, capacity: 3776MB
[mmc]: vendor: Man 0x00450100 Snr 0x3a44c129
[mmc]: product: SEM04
[mmc]: revision: 4.7
[mmc]: ***SD/MMC 2 init OK!!!***
sdcard 2 init ok
The size of uboot is 0x000ac000.
sum=0x1b9516ce
src_sum=0x1b9516ce
Succeed in loading uboot from sdmmc flash.
Ready to disable icache.
Jump to secend Boot.
[      0.306]

U-Boot 2011.09-rc1-svn (Feb 19 2015 - 19:43:52) Allwinner Technology

[      0.314]version: 1.1.0
[      0.317]pmbus:   ready
[      0.422]PMU: AXP209
[      0.424]PMU: AXP20x found
[      0.427]PMU: bat ratio = 100
[      0.435]PMU: dcdc2 1450
[      0.446]PMU: pll1 912 Mhz
boot_clock = 912
dcdc2_vol = 1450
dcdc3_vol = 1300
ldo2_vol = 3000
ldo3_vol = 2800
ldo4_vol = 2800
power_start = 0
storage_type = 0
usb_recovery = 0
find power_sply to end
fel key old mode
run key detect
no key found
0x32
set next system status
reset cpu
HELLO! BOOT0 is starting!
boot0 version : 3.1.0
eraly jump fel

U-Boot SPL 2020.10-rc4-00011-g3dd52dd69e (Sep 13 2020 - 10:06:32 +0000)
DRAM: 512 MiB
CPU: 912000000Hz, AXI/AHB/APB: 3/2/2
Trying to boot from FEL


U-Boot 2020.10-rc4-00011-g3dd52dd69e (Sep 13 2020 - 10:06:32 +0000) Allwinner Technology

CPU:   Allwinner A20 (SUN7I)
Model: Olimex A20-OLinuXino-LIME
I2C:   ready
DRAM:  512 MiB
MMC:   mmc@1c0f000: 0
Loading Environment from FAT... MMC: no card present
HDMI connected: Error need 19352kB for fb, but only 16384kB is reserved
In:    serial
Out:   serial
Err:   serial
Net:   eth0: ethernet@1c50000
Hit any key to stop autoboot:  0
MMC: no card present
scanning bus for devices...
AHCI PHY power up failed.

Device 0: unknown device
starting USB...
Bus usb@1c14000: USB EHCI 1.00
Bus usb@1c14400: USB OHCI 1.0
Bus usb@1c1c000: USB EHCI 1.00
Bus usb@1c1c400: USB OHCI 1.0
scanning bus usb@1c14000 for devices... 1 USB Device(s) found
scanning bus usb@1c14400 for devices... 2 USB Device(s) found
scanning bus usb@1c1c000 for devices... 3 USB Device(s) found
scanning bus usb@1c1c400 for devices... 1 USB Device(s) found
       scanning usb for storage devices... 0 Storage Device(s) found

Device 0: unknown device
Speed: 100, full duplex
BOOTP broadcast 1
BOOTP broadcast 2
BOOTP broadcast 3
DHCP client bound to address 192.168.1.18 (2494 ms)
*** ERROR: `serverip' not set
Cannot autoload with TFTPGET
missing environment variable: pxeuuid
missing environment variable: bootfile
Retrieving file: pxelinux.cfg/01-02-98-04-02-72-7e
Speed: 100, full duplex
*** ERROR: `serverip' not set
missing environment variable: bootfile
Retrieving file: pxelinux.cfg/C0A80112
Speed: 100, full duplex
*** ERROR: `serverip' not set
missing environment variable: bootfile
Retrieving file: pxelinux.cfg/C0A8011
Speed: 100, full duplex
*** ERROR: `serverip' not set
missing environment variable: bootfile
Retrieving file: pxelinux.cfg/C0A801
Speed: 100, full duplex
*** ERROR: `serverip' not set
missing environment variable: bootfile
Retrieving file: pxelinux.cfg/C0A80
Speed: 100, full duplex
*** ERROR: `serverip' not set
missing environment variable: bootfile
Retrieving file: pxelinux.cfg/C0A8
Speed: 100, full duplex
*** ERROR: `serverip' not set
missing environment variable: bootfile
Retrieving file: pxelinux.cfg/C0A
Speed: 100, full duplex
*** ERROR: `serverip' not set
missing environment variable: bootfile
Retrieving file: pxelinux.cfg/C0
Speed: 100, full duplex
*** ERROR: `serverip' not set
missing environment variable: bootfile
Retrieving file: pxelinux.cfg/C
Speed: 100, full duplex
*** ERROR: `serverip' not set
missing environment variable: bootfile
Retrieving file: pxelinux.cfg/default-arm-sunxi-sunxi
Speed: 100, full duplex
*** ERROR: `serverip' not set
missing environment variable: bootfile
Retrieving file: pxelinux.cfg/default-arm-sunxi
Speed: 100, full duplex
*** ERROR: `serverip' not set
missing environment variable: bootfile
Retrieving file: pxelinux.cfg/default-arm
Speed: 100, full duplex
*** ERROR: `serverip' not set
missing environment variable: bootfile
Retrieving file: pxelinux.cfg/default
Speed: 100, full duplex
*** ERROR: `serverip' not set
Config file not found
Speed: 100, full duplex
BOOTP broadcast 1
BOOTP broadcast 2
DHCP client bound to address 192.168.1.18 (2665 ms)
*** ERROR: `serverip' not set
Cannot autoload with TFTPGET
Speed: 100, full duplex
BOOTP broadcast 1
BOOTP broadcast 2
DHCP client bound to address 192.168.1.18 (3005 ms)
*** ERROR: `serverip' not set
Cannot autoload with TFTPGET
=>