TDA4VM-Q1: How to debug boot mode (Boot Parameter Table) in CCS register dump?

Gibbs Shih

Part Number: TDA4VM-Q1
Other Parts Discussed in Thread: TDA4VM

Tool/software:

Hi, Dear Expert

This is just an case studying for boot debug, I may need to share with my customer for experence sharing.

* Background : If we assume ROM code works well, but SBL/SPL in eMMC or SD boot failed, and no cosole output. We need to make sure boot mode pin latch status first.

* Status : JTAG connection is success, and use launch.js is ok.

Steps 1. Ref TRM (ex:TDA4VM)

Dump boot parameter index (0x41CF_FBFC), check this value is "1" or "0"

if value = 0 : dump register 0x41CF_FC00

if value = 1 : dump register 0x41CF_FE00

So my dump result as below. table index should be "0"

Steps 2. check 0x41CF_FC00

I found "magic value" is wrong, byte offset is 12, length = 4, but value not "0x01AD0911"

Do I do anything wrong?

Thank You Very Much

Gibbs

over 1 year ago

0 Tanmay Patil over 1 year ago

TI__Mastermind 42410 points

Hi,

Have you cross-checked the devstat registers in ctrl_mmr to see if correct boot mode is registered by SoC?

Regards,
Tanmay

0 Gibbs Shih over 1 year ago in reply to Tanmay Patil

TI__Expert 5975 points

Hi, Tanmay

EVB boot mode setting,

SW8:10001000, SW9:01110000 --> No Boot Mode

SW8 is main boot mode switch

So I try to dump "ctrl_mmr" DEVSTAT, I think bit 0~7 should be boot latch status.

main DEVSTAT = 0001 0001

wakup DEVSTAT = 0000 111 000

I am not sure, does it correct for No boot?

Thank You.

Gibbs

0 Tanmay Patil over 1 year ago in reply to Gibbs Shih

TI__Mastermind 42410 points

Hi,

Yes, this does seem correct.

But this is for no boot mode. What is the boot mode in which you are facing issues.

In that boot mode, you can connect using ccs without running the launch.js script, connect to MCU R5F and read this registers to see if the part configuration is correct.

What is the boot mode in which issues are observed by the way?

Regards,
Tanmay

0 Gibbs Shih over 1 year ago in reply to Tanmay Patil

TI__Expert 5975 points

Hi, Tanmay

This is "no boot mode"

So I try to understand how to understand DEVSTAT map no boot mode?

Thanks

Gibbs

0 Tanmay Patil over 1 year ago in reply to Gibbs Shih

TI__Mastermind 42410 points

Hi Gibbs,

Gibbs Shih said:
This is "no boot mode"

So I try to understand how to understand DEVSTAT map no boot mode?

Okay, in that case, there is no issue with devstat. They are proper. From what core are you trying to see the config parameters?

Regards,
Tanmay

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TDA4VM-Q1: How to debug boot mode (Boot Parameter Table) in CCS register dump?