From d0eb6cd8bd89ee47a8e3bf2948a2ff4196c761e3 Mon Sep 17 00:00:00 2001 From: Patrick Rudolph Date: Wed, 12 Apr 2017 16:50:26 +0200 Subject: nb/intel/fsp_sandybridge/gma: Set up OpRegion in nb code Set up IGD OpRegion in northbridge and fill in GNVS' aslb. At this point GNVS already has been set up by SSDT injection. Required for future VBT patches that will: * Use ACPI memory instead of CBMEM * Use common implementation to locate VBT * Fill in platform specific values Change-Id: Ie5d93117ee8bd8d15085aedbfa7358dfcf5f0045 Signed-off-by: Patrick Rudolph Reviewed-on: https://review.coreboot.org/19307 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin --- src/northbridge/intel/fsp_sandybridge/gma.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) (limited to 'src/northbridge/intel') diff --git a/src/northbridge/intel/fsp_sandybridge/gma.c b/src/northbridge/intel/fsp_sandybridge/gma.c index affbbc69bb..0034b06a23 100644 --- a/src/northbridge/intel/fsp_sandybridge/gma.c +++ b/src/northbridge/intel/fsp_sandybridge/gma.c @@ -19,6 +19,8 @@ #include #include #include +#include +#include #include "chip.h" #include "northbridge.h" @@ -80,6 +82,30 @@ static void gma_ssdt(device_t device) drivers_intel_gma_displays_ssdt_generate(gfx); } +static unsigned long +gma_write_acpi_tables(struct device *const dev, + unsigned long current, + struct acpi_rsdp *const rsdp) +{ + igd_opregion_t *opregion; + global_nvs_t *gnvs; + + // FIXME: Replace by common VBT implementation writing to current + opregion = igd_make_opregion(); + if (opregion) { + /* GNVS has been already set up */ + gnvs = cbmem_find(CBMEM_ID_ACPI_GNVS); + if (gnvs) { + /* IGD OpRegion Base Address */ + gnvs->aslb = (u32)(uintptr_t)opregion; + } else { + printk(BIOS_ERR, "Error: GNVS table not found.\n"); + } + } + + return current; +} + static struct pci_operations gma_pci_ops = { .set_subsystem = gma_set_subsystem, }; @@ -93,6 +119,7 @@ static struct device_operations gma_func0_ops = { .scan_bus = 0, .enable = 0, .ops_pci = &gma_pci_ops, + .write_acpi_tables = gma_write_acpi_tables, }; static const unsigned short gma_ids[] = { -- cgit v1.2.3