Internal SRAM Memory Map

Hi, Sreekumar,

I checked the TRM and I can see that there are 64KB Internal SRAM and 64KB SRAM connected to the L3 OCMC. That makes a total of 128KB SRAM. The first 1KB of the internal SRAM is reserved and can't be accessed (just like the U-Boot User's Guide says).

The TRM Memory Map information seems OK, except for the typo. I have submitted a Documentation Feedback regarding this particular typo.

To sum up:

1KB Reserved     0x402F0000 0x402F03FF     1KB Reserved out of 64KB internal SRAM
SRAM internal     0x402F0400 0x402FFFFF     32-bit Ex/R/W (the rest 63KB of the internal SRAM)
L3 OCMC0           0x40300000 0x4030FFFF     64KB 32-bit Ex/R/W OCMC SRAM


I also checked if I have read access to the first 1KB of the memory range with the following command in U-Boot:

U-Boot# md 0x402F0000

U-Boot has no r/w rights and it hangs.

I have access to any other address in the range 0x402F0400 0x402FFFFF.

The memory read command is: U-Boot# md [.b, .w, .l] address [# of objects]
The memory write command is: U-Boot# mw [.b, .w, .l] address value [count]

Best regards,
Miroslav

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