Linux/TMDX654GPEVM: boot to emmc

Zhan Liu

Prodigy 40 points

Part Number: TMDX654GPEVM

Tool/software: Linux

Failed to boot to u-boot / Linux after following the following procedure. I have a Am65x/DRA80xM Evaluation Module.

Anything I did wrong?

Thanks,

**************************************************************************************************************************************************************************************************************

Follow the Steps to boot to eMMC

http://software-dl.ti.com/processor-sdk-linux/esd/docs/05_01_00_11/linux/Foundational_Components_U-Boot.html#sd-emmc-or-usb-storage
Copied from the above doc

eMMC

ROM supports booting from eMMC from boot0 partition offset 0x0

Flashing Images to eMMC

The following commands can be used to download tiboot3.bin, tispl.bin and u-boot.img from an SD card and write them to the eMMC boot0 partition at respective addresses.

mmc dev 0 1
fatload mmc 1 ${loadaddr} tiboot3.bin
mmc write ${loadaddr} 0x0 0x400
fatload mmc 1 ${loadaddr} tispl.bin
mmc write ${loadaddr} 0x400 0x1000
fatload mmc 1 ${loadaddr} u-boot.img
mmc write ${loadaddr} 0x1400 0x2800

To give the ROM access to the boot partition, the following commands must be used for the first time:

mmc partconf 0 1 1 1
mmc bootbus 0 2 0 0

Bootmode Switch Settings
After writing the images, change the bootmode switches on the evm to the following:

Switch No.	1	2	3	4	5	6	7	8	9	10
SW3	ON	OFF	ON	ON	OFF	OFF	OFF	OFF	OFF	ON
SW2	OFF	OFF	OFF	OFF	OFF	OFF	OFF	OFF	OFF	OFF

Booting Kernel from eMMC
To create a software partition for the rootfs, the following command can be used:

gpt write mmc 0 ${partitions}

eMMC Layout
Kernel image and DT are expected to be present in the /boot folder of rootfs. To boot kernel from eMMC, use the following commands:

setenv mmcdev 0
setenv bootpart 0
boot

errors:

failed to mount ext2 filesystem
**unrecognizaed filesystem type **

over 6 years ago

0 Pavel Botev over 6 years ago

TI__Guru**** 170625 points

Hi Zhan Liu,

Do you use ti-processor-sdk-linux-am65xx-evm-05.01.00.11 ?

Can you provide console log of you exact commands to flash the eMMC and then consol log of your eMMC boot ? You can put these logs in txtx files and attach these files in the e2e thread.

Regards,
Pavel

0 Zhan Liu over 6 years ago in reply to Pavel Botev

Prodigy 40 points

Dear Sir / Madam;

thanks for your email. I have resolved the problem.

However, I have another problem. When I try to save environment to eMMC, it failed.

=> setenv mmcdev 0
=> setenv bootpart 0

=> saveenv

Can you please double check if you guys can actually save env to eMMC NOT SD card?

Thanks,

Zhan

P.S. I am using ti-processor-sdk-linux-am65xx-evm-05.01.00.11

0 Pavel Botev over 6 years ago in reply to Zhan Liu

TI__Guru**** 170625 points

Zhan,

Please open new e2e thread regarding your new issue.

Regards,
Pavel

0 Zhan Liu over 6 years ago

Prodigy 40 points

Part Number: TMDX654GPEVM

Tool/software: Linux

Dear Sir / Madam;

I have another problem. When I try to save environment to eMMC, it failed.

=> setenv mmcdev 0
=> setenv bootpart 0

=> saveenv

Can you please double check if you guys can actually save env to eMMC NOT SD card?

Thanks,

Zhan

P.S. I am using ti-processor-sdk-linux-am65xx-evm-05.01.00.11

0 Pavel Botev over 6 years ago in reply to Zhan Liu

TI__Guru**** 170625 points

Zhan,

I will test this problem on my AM65x EVM and come back to you.

Regards,
Pavel

0 Praneeth Bajjuri over 6 years ago in reply to Zhan Liu

TI__Expert 6256 points

on eMMC boot:
As per : git.ti.com/.../README
linux boot uses eMMC boot 0 partition for bootloader images .
As per TRM : www.ti.com/.../spruid7X.pdf
4.3.2 BOOTMODE Pin Mapping
you have to select "eMMC boot from boot partition" , SW3: 1011, SW2: 0100
--

On saveenv:
What is the error you see after "saveenv" ?

0 Zhan Liu over 6 years ago in reply to Praneeth Bajjuri

Prodigy 40 points

Hi Praneeth,

The following is the error message. I believe it still try to save to mmc1 (SD card). therefore, when the SD card is in, write successful. without SD, write failed. So why after mmc dev 0 1, it still try to save to SD?

Thanks,

Zhan

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

=> mmc dev 0 1

switch to partitions #1, OK

mmc0(part 1) is current device

=> saveenv

Saving Environment to FAT...

sdhci_set_clock: Timeout to wait cmd & data inhibit

sdhci_send_command: MMC: 1 busy timeout.

** Bad device mmc 1 **

=> mmc dev 0 0

switch to partitions #0, OK

mmc0(part 0) is current device

=> saveenv

Saving Environment to FAT...

sdhci_set_clock: Timeout to wait cmd & data inhibit

sdhci_send_command: MMC: 1 busy timeout.

** Bad device mmc 1 **

0 Praneeth Bajjuri over 6 years ago in reply to Zhan Liu

TI__Expert 6256 points

On AM65xEVM : MMC1 is eMMC and MMC2 is SD

This is what i see .
Boot Settings : SD Boot
SW2: 0010, SW3: 0110
=> mmc list
sdhci@0: 0 (eMMC)
sdhci@0: 1
=> mmc dev 0 1
switch to partitions #1, OK
mmc0(part 1) is current device
=> saveenv
Saving Environment to MMC...
Writing to MMC(0)... done
update bootloader images in eMMC with instructions
git.ti.com/.../README

--
Boot Settings eMMC Boot
SW2: 0100, SW3: 1011
=> mmc dev 0 1
switch to partitions #1, OK
mmc0(part 1) is current device
=> saveenv
Saving Environment to MMC...
Writing to MMC(0)... done

More test log : pastebin.ubuntu.com/.../

0 Praneeth Bajjuri over 6 years ago in reply to Praneeth Bajjuri

TI__Expert 6256 points

Are you using AM65xGPEVM Beta board?
Can you share full log from reset ?
what does "mmc info" , with "mmc dev 0 0" , "mmc dev 0 1", "mmc dev 1 0"
Example: pastebin.ubuntu.com/.../

Note: I am using a more current uboot (not the one from processor sdk 5.1 release) which contains some emmc fixes.
These fixes [1] will be available in the next processor sdk release.

For test purpose you can take
git.ti.com/.../

with instructions for emmc usage from :
git.ti.com/.../README

and see if it helps.

[1] For Reference:
CommitID 636878714c52ea3bab37bcdc5c638ea2fa10827c
CommitID 421ef73235cd1f99e2d17e584151f5332791320e
CommitID 60826ea82763e5578e7e848c3e735b707093f748
CommitID e09feaae7335b4e41628d7a46a4d2bb246c57928
CommitID 325c5a831d98ad310f9a0660a8b390ae12c80b72

0 Praneeth Bajjuri over 6 years ago in reply to Praneeth Bajjuri

TI__Expert 6256 points

Zhan, Did the above comment help resolve your issue ?

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Linux/TMDX654GPEVM: boot to emmc