RT1170_Flexspi_remap

[13692631114]

Hi,

    Why the remap function of flexspi can not work when the HADDRSTART is 0x08000000 in M4 core，but it can work in 0x30000000.

[jeremyzhou]

Hi，
Thank you for your interest in NXP Semiconductor products and for the opportunity to serve you.
Actually, I'm not very clear with your question, can you clarify it again?
TIC

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1. How to do an external flash partition?
-- It's able to do it via adjusting the linker file.
2. which part of the Flash portion will support the File system?
-- The Flash portion be used to store data.
TIC

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[13692631114]

The code runs on the m4 core, and the running rezults are shown in the screenshot. Why does 0x08008000 address not work when using flexspi remapping in the M4 core?

[jay_heng]

For both CM7 and CM4, the FlexSPI1/2 AHB map start address in Chip 4GB system map is 0x3000_0000/0x6000_0000. 

0x0800_xxxx is not valid map address for FlexSPIx. it cannot be used for remap feature.

You can refer to below two blogs for FlexSPI remap feature:

https://www.cnblogs.com/henjay724/p/13538105.html

https://www.cnblogs.com/henjay724/p/13510275.html

[13692631114]

Hi,

Howener, the chip data manual describes 0x0800_0000 as the mapped address of FlexSPI1. What's so special about FlexSPI1(alias)?