i.MX Processors中的主题 About iMX6SX DDR Code alias

About iMX6SX DDR Code alias

mileswang — Tue, 27 Oct 2015 10:24:02 GMT

Hello,

I read the IMX6SXRM (i.MX 6SoloX Applications Processor Reference Manual)

At page 196, there is a line:

1000_0000 1FFF_7FFF 256 MB -64 KB DDR Code alias

Whose alias is it? What is the start address?

Thanks,

Miles

Re: About iMX6SX DDR Code alias

Yuri — Wed, 28 Oct 2015 03:01:01 GMT

Hello,

Really address range 0x1000_0000 – 0xFFFF_FFFF is reserved for DDR memory.

Have a great day,
Yuri

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Re: About iMX6SX DDR Code alias

mileswang — Wed, 28 Oct 2015 03:16:05 GMT

Dear Yuri,

Sorry. I don't understand your answer. Below is a part of the CM4 memory map:

I can understand "OCRAM_S Aliased" is the alias of OCRAM_S. They are pointer to same memory region.

Then who is the alias of "DDR Code alias" (1000_000 to 1FFF_7FFF)?

Thanks,

Miles

Re: About iMX6SX DDR Code alias

Yuri — Wed, 28 Oct 2015 03:43:20 GMT

For CM4 :

DDR address space is 0x8000_0000 – 0xDFFF_FFFF

and its alias :

0x1000_0000 - 0x1FFF_7FFF,

where 0x8000_0000 corresponds 0x1000_0000

Regards,

Yuri.