AM2634: Ram usage

Samuel G

Prodigy 50 points

Part Number: AM2634
Other Parts Discussed in Thread: SYSCONFIG

I have two doubts even after going through documentation i am not getting clarity on theses

1. Where can I find detailed memory map documentation for RAM

2. If the device in QSPI flash boot mode, will it copy the whole application image from flash to RAM ?

over 1 year ago

+1 Gunjan Kumari over 1 year ago

TI__Intellectual 2640 points

Hello,

1. Please refer AM263x Sitara Processors Technical Reference Manual Register Addendum (Rev. D) (ti.com) for memory map documentation.
2. QSPI (4S) boot mode is not eXecute-In-Place (XIP). ROM code first copies boot image into on-chip RAM and then executes it.

Thanks,
Gunjan

0 Samuel G over 1 year ago in reply to Gunjan Kumari

Prodigy 50 points

Hi Gunjan

Thanks for the replay

I understood that the boot image will be copied into the RAM, I have observed linker file and confirmed it.

my doubt is that the the application image/User code image will also be copied into ram irrespective of whether booting from flash or not

+1 Gunjan Kumari over 1 year ago in reply to Samuel G

TI__Intellectual 2640 points

Hello Sarun,

Yes, application image will be copied into ram first even if booting from flash.

Thanks,
Gunjan

0 Samuel G over 1 year ago in reply to Gunjan Kumari

Prodigy 50 points

Hi Gunjan, Good day

That makes sense but

I tried to dig a little more and found this option in sysconfig

/resized-image/__size/1024x768/__key/communityserver-discussions-components-files/908/am263xflash.png

it doesn't work so far, while debugging getting this exception and core is going into abort mode

Below is message from debug console

***All IP Clocks are Enabled***

Cortex_R5_0: AM263x
Cortex_R5_0: GEL Output: CPU reset (soft reset) has been issued through GEL.
Cortex_R5_0: Writing 1 chunk at offset 0x100000
Cortex_R5_0: Trouble Setting Breakpoint with the Action "Finish Auto Run" at 0x601050ec: (Error -1066 @ 0x601050EC) Unable to set/clear requested breakpoint. Verify that the breakpoint address is in valid memory. (Emulation package 12.6.0.00029)
Cortex_R5_0: Breakpoint Manager: Retrying with a AET breakpoint

+1 Gunjan Kumari over 1 year ago in reply to Samuel G

TI__Intellectual 2640 points

Hello Sarun,

For 263x load and run is supported only when both addresses (load, run) are in RAM.

Regards,
Gunjan

+1 Samuel G over 1 year ago in reply to Gunjan Kumari

Prodigy 50 points

Hi Gunjan,

Thanks for clearing that up, Good day

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AM2634: Ram usage