u-boot can't determine partition table

[kruglikov_dmt]

Hello. 

I've got the trouble with u-boot and samsung emmc: partition table can't be determined.

* U-Boot > mmc dev 2
...

CMD_TRACE:

...

CMD_SEND:8
                ARG                      0x000001AA
                RET: -19 , 0xffffffed
                MMC_RSP_R1,5,6,7         0x2FF67610
CMD_SEND:55
                ARG                      0x00000000
                RET: -19 , 0xffffffed
                MMC_RSP_R1,5,6,7         0x2FF67610

...

CMD_SEND:8
                ARG                      0x00000000
                RET: -19 , 0xffffffed
                MMC_RSP_R1,5,6,7         0x00000900

...

===> mmc_bread: buff start=0, cur=1, value=0x2ef575e0
===> mmc_bread: blkcnt=1
===> test_block_type error 1: (buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) || (buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa)
bad MBR sector signature: 0x9966
===> test_part_dos error: test_block_type(buffer) != DOS_MBR
switch to partitions #0, OK
mmc2(part 0) is current device

------------------------------------------------------------------------------------

* U-Boot > mmc info
Device: FSL_SDHC
Manufacturer ID: 90
OEM: 14a
Name: H8G1e
Tran Speed: 52000000
Rd Block Len: 512
MMC version 5.0
High Capacity: Yes
Capacity: 7.3 GiB
Bus Width: 1-bit
Erase Group Size: 512 KiB
HC WP Group Size: 8 MiB
User Capacity: 7.3 GiB WRREL
Boot Capacity: 4 MiB ENH
RPMB Capacity: 512 KiB ENH

------------------------------------------------------------------------------------

In the same time Linux kernel works fine with this emmc:

# fdisk -l /dev/mmcblk3
Disk /dev/mmcblk3: 7.3 GiB, 7818182656 bytes, 15269888 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x3f1bef1e
Device         Boot Start    End Sectors Size Id Type
/dev/mmcblk3p1       2048 133119  131072  64M 83 Linux

------------------------------------------------------------------------------------

Does anyone have any idea?

What is error code -19 ?

Thanks!

[igorpadykov · Accepted solution]

Hi Eugene

one can look at similar issue on

https://community.nxp.com/thread/498776 

Best regards
igor
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[kruglikov_dmt]

the problem was in connection

thanks for hint with boot partition

[kruglikov_dmt]

looks like that theme about boot partition (title of theme is a bit wrong).

In my case I asked about partition table.