LX2160A System Memory Map

[156614400]

in  LX2160ARM.pdf ,  System Memory Map,   the ddr ram map the 0x0000_8000_0000  ,  but this region  is only 2G.    LX2160A-RDB board have 2 ddr slot,  if have 256G  ddr ,   what address it map ???

the ddr ram  is  maped to diffrent  divided  address ??

like this ?

0x0000_8000_0000 ------   0x0000_9FFF_FFFF      (2G)
0x0020_8000_0000 ------   0x003F_FFFF_FFFF      (128G)

0x0060_0000_0000 ----               (126G)

thanks

[ufedor · Accepted solution]

> the ddr ram  is  maped to diffrent  divided  address ??

Yes - refer to the QorIQ LX2160A Reference Manual, 2.2 System Memory Map.

According to the ARM Architecture SoC address to DRAM address remapping is preformed for the LX2160A as follows:

SoC Address	Size	Address presented to the DDR Controller
0x00_8000_0000 - 0x00_FFFF_FFFF	2GB	0x00_0000_0000 - 0x00_7FFF_FFFF
0x20_8000_0000 - 0x3F_FFFF_FFFF	126GB	0x00_8000_0000 - 0x1F_FFFF_FFFF
0x60_0000_0000 - 0x7F_FFFF_FFFF	128GB	0x20_0000_0000 - 0x3F_FFFF_FFFF