问题：hi3536设置从emmc启动，uboot重启后只打印一次空格，uboot没有启动，为什么？

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问题：hi3536设置从emmc启动，uboot重启后只打印一次空格，uboot没有启动，为什么？

问题描述：
这是我通过hi-tool工具烧写uboot的的打印日志，说明已经成功烧写了uboot镜像到emmc芯片中

-Boot 2010.06-dirty (Jun 02 2017 - 13:57:06)

NAND: Check nand flash controller v610. found
Special NAND id table Version 1.36
Nand ID: 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
No NAND device found!!!
0 MiB
Check spi flash controller v350... Found
Can't find a valid spi flash chip.
Can't find a valid spi flash chip.
MMC:
EMMC/MMC/SD controller initialization.
mmc->init(mmc)/err=0x0
mmc_go_idle(mmc)/err=0x0
mmc_startup(mmc)/err=0x0
Device is not exit !
MMC/SD Card:
MID: 0x15
Read Block: 512 Bytes
Write Block: 512 Bytes
Chip Size: 7452M Bytes (High Capacity)
Name: "M8G2F"
Chip Type: MMC
Version: 4.0
Speed: 25000000Hz
Bus Width: 8bit
Boot Addr: 0 Bytes
*** Warning - bad CRC, using default environment

In: serial
Out: serial
Err: serial
start download process.

Boot Started successfully!

Send command: mmc write 0x0 0x41000000 0x0 0x297

MMC write: dev # 0, block # 0, count 663 ... 663 blocks written: OK
[EOT](OK)
Fastboot burnt successfully!


同时也确认这三个pin管脚硬件上都上拉为高电平

BOOTROM_SEL 信号与芯片外部管脚MDCK 复用；
BOOT_SEL1 信号与芯片外部管脚EPHY0_CLK 复用；
BOOT_SEL0 信号与芯片外部管脚RGMII0_TXER 复用。
现在断电重启主板，串口检测只是打印一次空格字符，
hex数据为CF 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0A

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有没有朋友遇到过类似的问题，麻烦给点思路，谢谢了！

[FireDragonEx]

楼主又解决么，方便透露下解决的思路么

[qq_16894847]

3536 uboot和内核不支持emmc吗？还需要修改？

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后来换成sdk2060版本的就好了

[Chat_zhanggong345]

Hi3536 Hi3536C Hi3536D 哪款？？

[Chat_zhanggong345]

u-boot的“board—>machine—>arch—>cpu”框架