SK-AM62B-P1: How and what is flashed in which part of the emmc?

Shreyan Jain

Part Number: SK-AM62B-P1

I wanted to flash custom images into the images of the evk,which have the following components:

A boot patition
- tiboot3.bin
- tispl.bin
- u-boot.img
- uboot.env
A ext4 partition in the user data area containing
- Linux Kernel image
- Linux DTB
- Linux file system

So,I was wondering,if I can do so with these guides,because they're more inclined towards .appimage files:
1.https://software-dl.ti.com/mcu-plus-sdk/esd/AM62X/latest/exports/docs/api_guide_am62x/EXAMPLES_DRIVERS_SBL_EMMC_LINUX_MULTISTAGE.html
2.https://software-dl.ti.com/mcu-plus-sdk/esd/AM62X/latest/exports/docs/api_guide_am62x/SBL_BOOTING_LINUX_EMMC.html

Also,which parts go where ,with respect to this diagram:

+---------+---------+--------+----------------------------------+
|  boot0  |  boot1  |  rpmb  |          User Data Area          |
+---------+---------+--------+----------------------------------+

All suggestions are welcome,thanks in advance

9 months ago

0 Prashant Shivhare 9 months ago

TI__Guru 50371 points

Hi Shreyan,

Shreyan Jain said:
Also,which parts go where ,with respect to this diagram:

Please refer the eMMC layout section here: https://software-dl.ti.com/processor-sdk-linux/esd/AM62X/09_02_01_09/exports/docs/linux/Foundational_Components/U-Boot/UG-Memory.html#booting-tiboot3-bin-tispl-bin-and-u-boot-img-from-emmc-boot-partition-for-k3-class-of-socs

For flashing Linux, please refer: Flash Linux to eMMC (ti.com)

Regards,

Prashant

0 Shreyan Jain 9 months ago in reply to Prashant Shivhare

Intellectual 265 points

Dear Prashant,

Thank you for the guides,but is there any way you can flash the emmc using uart,instead of sd card ?

Regards,

Shreyan

0 Prashant Shivhare 9 months ago in reply to Shreyan Jain

TI__Guru 50371 points

Hi Shreyan,

Please refer: https://software-dl.ti.com/processor-sdk-linux/esd/AM62X/09_01_00_08/exports/docs/linux/Foundational_Components/Tools/Flash_via_UART.html

You may want to use DFU flashing which is much faster than UART

https://software-dl.ti.com/processor-sdk-linux/esd/AM62X/09_01_00_08/exports/docs/linux/Foundational_Components/Tools/Flash_via_DFU.html

Regards,

Prashant

0 Shreyan Jain 9 months ago in reply to Prashant Shivhare

Intellectual 265 points

Dear Prashant,
I followed the instructions,and flashed into the board using the python script,and it did so without any errors,but even then the evk doesn't boot up via emmc,would you mind suggesting where I could've gone wrong?

I tried in all the modes,uart,ospi and emmc but it doesn't boot up.

Regards,

Shreyan

0 Prashant Shivhare 9 months ago in reply to Shreyan Jain

TI__Guru 50371 points

Hi Shreyan,

Shreyan Jain said:
I followed the instructions,and flashed into the board using the python script,

Could you please share these flashing logs?

Regards,

Prashant

0 Shreyan Jain 8 months ago in reply to Prashant Shivhare

Intellectual 265 points

Here are the logs,I've used the same script and uart mode to flash,and I'm using emmc boot mode to boot it through a serial port. The board is a brand new one and doesn't have anything else,are are there any additional steps to take?
Regards,

Shreyan

0 Prashant Shivhare 8 months ago in reply to Shreyan Jain

TI__Guru 50371 points

Hi Shreyan,

You have used the operation "--operation=flash" which flashes to OSPI. Please use "--operation=flash-emmc"

# Flash tiboot3.bin
--file=<path to file>/tiboot3.bin --operation=flash-emmc --flash-offset=0x0

# Flash tispl.bin
--file=<path to file>/tispl.bin --operation=flash-emmc --flash-offset=0x80000

# Flash u-boot.img
--file=<path to file>/u-boot.img --operation=flash-emmc --flash-offset=0x280000

Regards,

Prashant

0 Shreyan Jain 8 months ago in reply to Prashant Shivhare

Intellectual 265 points

Dear Prashant,

I did flash it,but the uboot isn't able to find the kernel,and this is what I tried via the u-boot:

setenv mmcdev 0
setenv bootpart 0:2
boot

I even tried

setenv mmcdev 0
setenv bootpart 0
boot

It shows this instead:

U-Boot SPL 2023.04-gb0d717b732 (Dec 06 2023 - 15:11:45 +0000)
SYSFW ABI: 3.1 (firmware rev 0x0009 '9.1.8--v09.01.08 (Kool Koala)')
SPL initial stack usage: 13384 bytes
Trying to boot from MMC1
Authentication passed
Authentication passed
Authentication passed
Authentication passed
Authentication passed
Starting ATF on ARM64 core...

NOTICE:  BL31: v2.9(release):v2.9.0-614-gd7a7135d32-dirty
NOTICE:  BL31: Built : 09:34:15, Aug 24 2023

U-Boot SPL 2023.04-gb0d717b732 (Dec 06 2023 - 15:11:45 +0000)
SYSFW ABI: 3.1 (firmware rev 0x0009 '9.1.8--v09.01.08 (Kool Koala)')
SPL initial stack usage: 1856 bytes
MMC: no card present
** Bad device specification mmc 1 **
Couldn't find partition mmc 1:1
Error: could not access storage.
Trying to boot from MMC1
Authentication passed
Authentication passed


U-Boot 2023.04-gb0d717b732 (Dec 06 2023 - 15:11:45 +0000)

SoC:   AM62X SR1.0 HS-FS
Model: Texas Instruments AM625 SK
EEPROM not available at 80, trying to read at 81
Board: AM62B-SKEVM-P1 rev A
DRAM:  2 GiB
Core:  72 devices, 32 uclasses, devicetree: separate
MMC:   mmc@fa10000: 0, mmc@fa00000: 1
Loading Environment from nowhere... OK
In:    serial
Out:   serial
Err:   serial
Net:   eth0: ethernet@8000000port@1
Hit any key to stop autoboot:  0 
=> setenv mmcdev 0
=> setenv bootpart 0
=> boot
switch to partitions #0, OK
mmc0(part 0) is current device
SD/MMC found on device 0
Failed to load 'boot.scr'
Failed to load 'uEnv.txt'
## Error: "main_cpsw0_qsgmii_phyinit" not defined
Failed to load '/boot/Image'
Failed to load '/boot/dtb/ti/k3-am625-sk.dtb'
libfdt fdt_check_header(): FDT_ERR_BADMAGIC
No FDT memory address configured. Please configure
the FDT address via "fdt addr <address>" command.
Aborting!
Bad Linux ARM64 Image magic!
switch to partitions #0, OK
mmc0(part 0) is current device
Scanning mmc 0:1...
MMC: no card present
No EFI system partition
No EFI system partition
Failed to persist EFI variables
BootOrder not defined
EFI boot manager: Cannot load any image
MMC: no card present
starting USB...
Bus usb@31100000: generic_phy_get_bulk : no phys property
Register 1000840 NbrPorts 1
Starting the controller
USB XHCI 1.10
scanning bus usb@31100000 for devices... 1 USB Device(s) found
       scanning usb for storage devices... 0 Storage Device(s) found

Device 0: unknown device
ethernet@8000000port@1 Waiting for PHY auto negotiation to complete........
U-Boot SPL 2023.04-gb0d717b732 (Dec 06 2023 - 15:11:45 +0000)
SYSFW ABI: 3.1 (firmware rev 0x0009 '9.1.8--v09.01.08 (Kool Koala)')
SPL initial stack usage: 13384 bytes
Trying to boot from MMC1
Authentication passed
Authentication passed
Authentication passed
Authentication passed
Authentication passed
Starting ATF on ARM64 core...

NOTICE:  BL31: v2.9(release):v2.9.0-614-gd7a7135d32-dirty
NOTICE:  BL31: Built : 09:34:15, Aug 24 2023

U-Boot SPL 2023.04-gb0d717b732 (Dec 06 2023 - 15:11:45 +0000)
SYSFW ABI: 3.1 (firmware rev 0x0009 '9.1.8--v09.01.08 (Kool Koala)')
SPL initial stack usage: 1856 bytes
MMC: no card present
** Bad device specification mmc 1 **
Couldn't find partition mmc 1:1
Error: could not access storage.
Trying to boot from MMC1
Authentication passed
Authentication passed


U-Boot 2023.04-gb0d717b732 (Dec 06 2023 - 15:11:45 +0000)

SoC:   AM62X SR1.0 HS-FS
Model: Texas Instruments AM625 SK
EEPROM not available at 80, trying to read at 81
Board: AM62B-SKEVM-P1 rev A
DRAM:  2 GiB
Core:  72 devices, 32 uclasses, devicetree: separate
MMC:   mmc@fa10000: 0, mmc@fa00000: 1
Loading Environment from nowhere... OK
In:    serial
Out:   serial
Err:   serial
Net:   eth0: ethernet@8000000port@1
Hit any key to stop autoboot:  0 
=>

What do you suggest I do?

Regards,
Shreyan

0 Prashant Shivhare 8 months ago in reply to Shreyan Jain

TI__Guru 50371 points

Hi,

Can you please share the output of the following command run from the U-Boot prompt

=> mmc dev 0 0
=> mmc part

0 Shreyan Jain 8 months ago in reply to Prashant Shivhare

Intellectual 265 points

Dear Prashant,

=> mmc dev 0 0
switch to partitions #0, OK
mmc0(part 0) is current device
=> mmc part

Partition Map for MMC device 0  --   Partition Type: DOS

Part    Start Sector    Num Sectors     UUID            Type
  1     2048            32768           0d0c5ad5-01     0e Boot
  2     34816           31045632        0d0c5ad5-02     83

This is the output
Regards,
Shreyan

0 Prashant Shivhare 8 months ago in reply to Shreyan Jain

TI__Guru 50371 points

Thanks. So, the eMMC is already partitioned.

Can you now run the following command to see if the second partition contains a rootfs

=> ls mmc 0:2
=> ls mmc 0:2 /boot
=> ls mmc 0:2 /boot/dtb/ti

0 Shreyan Jain 8 months ago in reply to Prashant Shivhare

Intellectual 265 points

They aren't showing anything,I don't think it does

0 Prashant Shivhare 8 months ago in reply to Shreyan Jain

TI__Guru 50371 points

If these commands are not showing anything then you haven't yet flashed Linux Rootfs in the eMMC. If the Linux Rootfs is flashed correctly, you should see the output similar to the following where Linux Rootfs is flashed in partition 1

verify-emmc-partition-before-booting-linux.md

## How to verify eMMC partition content before booting Linux Kernel
```
=> mmc part

Partition Map for MMC device 0  --   Partition Type: EFI

Part    Start LBA       End LBA         Name
        Attributes
        Type GUID
        Partition GUID
  1     0x00000022      0x01da3fde      "rootfs"
        attrs:  0x0000000000000000
        type:   ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
        guid:   51342c80-6801-457b-928a-72c4a6a00d7a
=> ls mmc 0:1
<DIR>       4096 .
<DIR>       4096 ..
<DIR>      16384 lost+found
<DIR>       4096 bin
<DIR>       4096 boot
<DIR>       4096 dev
<DIR>       4096 etc
<DIR>       4096 home
<DIR>       4096 lib
<SYM>         19 linuxrc
<DIR>       4096 media
<DIR>       4096 mnt
<DIR>       4096 proc
<DIR>       4096 run
<DIR>       4096 sbin
<DIR>       4096 srv
<DIR>       4096 sys
<DIR>       4096 tmp
<DIR>       4096 usr
<DIR>       4096 var
=> ls mmc 0:1 /boot
<DIR>       4096 .
<DIR>       4096 ..
<DIR>       4096 EFI
<SYM>         29 Image
        19376640 Image-6.1.80-ti-g2e423244f8c0
<DIR>       4096 dtb
<SYM>         32 fitImage
         8408718 fitImage-6.1.80-ti-g2e423244f8c0
=> ls mmc 0:1 /boot/dtb/ti
<DIR>       4096 .
<DIR>       4096 ..
            1990 k3-am625-beagleplay-csi2-ov5640.dtbo
            1990 k3-am625-beagleplay-csi2-tevi-ov5640.dtbo
            2882 k3-am625-beagleplay-lincolntech-lcd185-panel.dtbo
           61115 k3-am625-beagleplay.dtb
            1116 k3-am625-sk-dmtimer-pwm.dtbo
             872 k3-am625-sk-ecap-capture.dtbo
            1969 k3-am625-sk-lincolntech-lcd185-panel.dtbo
            1116 k3-am625-sk-mcspi-loopback.dtbo
            2462 k3-am625-sk-microtips-mf101hie-panel.dtbo
            1406 k3-am625-sk-microtips-mf103hie-lcd2.dtbo
            1636 k3-am625-sk-pwm.dtbo
            2360 k3-am625-sk-rpi-hdr-ehrpwm.dtbo
           59546 k3-am625-sk.dtb
            1915 k3-am62x-sk-csi2-imx219.dtbo
            1886 k3-am62x-sk-csi2-ov5640.dtbo
            1886 k3-am62x-sk-csi2-tevi-ov5640.dtbo
            2131 k3-am62x-sk-csi2-v3link-fusion.dtbo
             936 k3-am62x-sk-eqep.dtbo
            1345 k3-am62x-sk-hdmi-audio.dtbo
             478 k3-am62x-sk-hdmi-disable-fastboot.dtbo
            4232 k3-am62x-sk-lpm-wkup-sources.dtbo
            2192 k3-am62x-sk-mcan.dtbo
=> 
```

Please refer to the following guide for flashing Linux:

SD card: https://dev.ti.com/tirex/explore/node?node=A__AdNWBqCVds4ZSqU9osT1tQ__AM62-ACADEMY__uiYMDcq__LATEST

DFU: https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1127618/faq-sk-am62-how-to-flash-emmc-using-usb-dfu-on-am62x-sk-e2