TDA4VE-Q1: eMMC user/UDA booting in FS (filesystem) mode

Diwakar Dhyani

your instructions are for "UDA partition RAW mode". I am looking for "UDA partition FS mode (FAT32)".

Thanks

Hi Primoz Fiser,

Can you share the compete steps you followed to flash the images in the UDA partition in FS mode ?

Regards
Diwakar

Diwakar Dhyani

Steps:

1) Erase entire eMMC UDA partition from U-Boot:

=> mmc dev 0 0
switch to partitions #0, OK
mmc0(part 0) is current device
=> mmc erase 0 0x39a0000

MMC erase: dev # 0, block # 0, count 60424192 ... 60424192 blocks erased: OK

2) Flash eMMC UDA partition from Linux (running from SD card) using mounted USB flash drive with wic image:

# mkdir FLASH
# mount /dev/sda1 FLASH
# dd if=FLASH/tisdk-default-image-example-board-am68x-1.wic of=/dev/mmcblk0 bs=1M && sync
[ 1304.279036]  mmcblk0: p1 p2
3165+1 records in
3165+1 records out
3165697024 bytes (3.2 GB, 2.9 GiB) copied, 191.12 s, 16.6 MB/s
# reboot

Here is wic image fdisk output:

fdisk -l tisdk-default-image-example-board-am68x-1.wic: 2.97 GiB, 3165697024 bytes, 6183002 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: 0x9215cf9b

Device                                                                                                                                         Boot  Start     End Sectors   Size Id Type
tisdk-default-image-example-board-am68x-1.wic1 *      2048  323317  321270 156.9M  c W95 FAT32 (LBA)
tisdk-default-image-example-board-am68x-1.wic2      323584 6183001 5859418   2.8G 83 Linux

so:

first partition is fat32 (boot binaries) and second partition is ext4 (rootfs). And the wic image is exactly the same as the one used for SD card booting.

HI  

I tried these steps for SPL also 

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1067116/faq-tda4vm-how-to-boot-tda4vm-from-emmc-uda-partition-using-sbl-in-sdk-8-1

1.Copy mksdboot.sh script from the linux sdk to the sd card  

2../mksdboot.sh --device /dev/mmcblk0

copy the boot images to emmc uda partition from sd card 

3.cp /run/media/mmcblk1p1/* /run/media/mmcblk0p1/

along with changing the EXCSD register

4. mmc partconf 0 1 7 1

i am able to boot with that 

Regards
Diwakar

Hi Diwakar Dhyani

can you make sure your tispl.bin + u-boot.img binaries were not loaded from eMMC BOOT0 partition?

The easiest way would be to erase eMMC BOOT0 partition from U-Boot by using:

=> mmc dev 0 1
switch to partitions #1, OK
mmc0(part 1) is current device
=> mmc erase 0 0xfc00

MMC erase: dev # 0, block # 0, count 64512 ... 64512 blocks erased: OK

Block count for you board (0xfc00) can be determined by trying to read large data from eMMC:

=> mmc read ${loadaddr} 0x7fffffff 1

MMC read: dev # 0, block # 2147483647, count 1 ... MMC: block number 0x80000000 exceeds max(0xfc00)
0 blocks read: ERROR

Can you also check that, please?

BR,
Primoz

Hi Primoz Fiser,

I already erased all the data from the other emmc partition and kept boot images in the UDA partition its is working fine for me.

Have you tried the mentioned steps on the evm ?

Regards
Diwakar

Hi Primoz Fiser,

I tested  with the 8.6 linux sdk which one you are using ?

Regards
Diwakar