Dear Sir.

My ENV.

  Platform : intel atom rangeley mohon peak CRB(C2358)

This time, I'm try to study for MRC(Memory Reference Code).

But, I'm can not found a some example code on coreboot source tree.(rangely)

Anyway, I'm get a some hint on last image.

Performing operation on 'COREBOOT' region...
Name                           Offset     Type         Size
cbfs master header             0x0        cbfs header  32
fallback/romstage              0x80       stage        24356
config                         0x6040     raw          440
revision                       0x6240     raw          567
cmos_layout.bin                0x64c0     cmos_layout  1316
fallback/dsdt.aml              0x6a40     raw          8074
payload_config                 0x8a40     raw          1574
payload_revision               0x90c0     raw          244
(empty)                        0x9200     null         27800
mrc.cache                  0xfec0    mrc_cache  65536
cpu_microcode_blob.bin         0x1ff00    microcode    167936
fallback/ramstage              0x48f80    stage        48170
fallback/payload               0x54c00    payload      61309
(empty)                        0x63bc0    null         1163992
fsp.bin                        0x17fec0   fsp          389120
(empty)                        0x1def00   null         133528
bootblock                      0x1ff8c0   bootblock    1528

Question.

 1. What purpose the "mrc.cache"?

 2. Where to location the source code for "mrc.cache" ?

 3. How modify the MRC ? for the sdram.

Thank you.