This patch adds an ACPI method to get the LPC Generic Memory Range
(LGMR) address. This is necessary for platforms that need to access
the LGMR from OS driver.
The new method, called GLGM, reads the LGMR address from the LPC PCI
configuration space (offset 0x98) and returns it as a 32-bit value.
BUG=b:354066052
TEST=Able to build and boot google/brox.
Change-Id: I4322cee2c608e550e233c45c68958e8a4046c361
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/85602
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
bb85775d92