AM2634: save/restore FPU context feature in the R5F FIQ ISR

GIOVANNI STOPPONI

Prodigy 40 points

Part Number: AM2634

Hi,

we need the save/restore FPU context feature in the R5F FIQ ISR.

Is there a reason for this absence?

Will you insert this feature in the new SDK?

We need this feature as soon as possible.

over 2 years ago

0 EyalCo over 1 year ago

TI__Expert 3570 points

Hi Giovanni,

The SAVE and RESTORE logic of the FPU is written here:

source/kernel/nortos/dpl/r5/HwiP_armv7r_handlers_nortos_asm.S

You can simply copy these functions to the FIQ

source/kernel/nortos/dpl/r5/HwiP_armv7r_handlers_nortos.c

Regards,

Eyal

0 Shlomi Dar over 1 year ago in reply to EyalCo

Prodigy 50 points

Hi Eyal

Why it was removed from FIQ implementation in the first place? are there are limit that we need to be aware of?

0 Prasad Jondhale over 1 year ago in reply to Shlomi Dar

TI__Mastermind 27743 points

Hi Shlomi,

FIQ implementation was not removed, it's was not implemented (bug/gap) earlier and planned for SDK9.1 (Nov-end, 2023) (below is JIRA just for reference, not accessible outside)

[MCUSDK-5873] FIQ handler data missing in HwIP_armv7r_handlers_nortos_asm.S file - Texas Instruments JIRA (ti.com)

I will discuss this internally and see if we could provide any patch to unblock you. Let me get back to you on Monday, 9th Oct.

Regards,

Prasad

0 Prasad Jondhale over 1 year ago in reply to Prasad Jondhale

TI__Mastermind 27743 points

Hi Shlomi,

Sorry for delay but we need few more days to get back on early drop feasibility. Kindly let me get back to you by Friday,

Regards,

Prasad

0 Prasad Jondhale over 1 year ago in reply to Prasad Jondhale

TI__Mastermind 27743 points

Hi Shlomi,

Checking internally, we won't be able to provide early code drop. The feature would be part of SDK9.1 directly. Hope that works for you.

Sorry for inconvenience.

Regards,

Prasad

0 Johannes von Löwis over 1 year ago in reply to Prasad Jondhale

Expert 1786 points

Hi Prasad,

is this feature expected to be also available in the next release of AM243 SDK?

If yes, when is it scheduled for release?

Best regards

Johannes

0 Piyali Goswami over 1 year ago in reply to Johannes von Löwis

TI__Mastermind 30235 points

Johannes

Yes. This will be available in next release of AM243 which is SDK 9.1 version number. The release is slated for 15th Dec 2023.

Best Regards

Piyali

0 Shlomi Dar over 1 year ago in reply to Piyali Goswami

Prodigy 50 points

Great news, thank you for your support.

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AM2634: save/restore FPU context feature in the R5F FIQ ISR