soc/intel/common: Configure all possible GFX DSM memory reserve range

Intel internal graphics preallocated memory size should be selected from
below lists as per Intel FSP UPD header:

0x00:0MB, 0x01:32MB, 0x02:64MB, 0x03:96MB, 0x04:128MB, 0x05:160MB,
0xF0:4MB, 0xF1:8MB, 0xF2:12MB, 0xF3:16MB, 0xF4:20MB, 0xF5:24MB,
0xF6:28MB, 0xF7:32MB, 0xF8:36MB, 0xF9:40MB, 0xFA:44MB, 0xFB:48MB,
0xFC:52MB, 0xFD:56MB, 0xFE:60MB

This patch ensures that coreboot can report the same preallocated
memory range for intel grapics during memory layout calculation.

Note: Today all existing SoCs(except Cannonlake) are supported under intel
common code block design may not need to use any other values than 0x0-0x05
for GFX DSM range. DSM memory ranges between 0xF0-0xF6 are majorly for
early SoC samples and validation requirement. This code block to justify
all differnet possible ranges that FSP may support for a platform.

TEST=Set IgdDvmt50PreAlloc UPD with different ranges between 4MB-60MB
and coreboot could able to calculate GFX DSM range accordingly.

Change-Id: I99735e9a2ee57626bd9d7258e700f7f39ef02e58
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/25562
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

0 files changed, 0 insertions, 0 deletions