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drivers/intel/gma: Move IGD OpRegion to CBMEM

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It never was in GNVS, it never belonged among the ACPI tables. Having
it in CBMEM, makes it easy to look the location up on resume, and saves
us additional boilerplate.

TEST=Booted Linux on Lenovo/X201s, confirmed ASLS is set and
     intel_backlight + acpi_video synchronize, both before and
     after suspend.

Change-Id: I5fdd6634e4a671a85b1df8bc9815296ff42edf29
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40724
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Nico Huber
2020-04-26 17:01:25 +02:00
parent 4dc4cb6b5c
commit f2a0be235c
41 changed files with 65 additions and 1252 deletions
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22
src/soc/intel/braswell/acpi.c
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@@ -460,38 +460,16 @@ unsigned long acpi_madt_irq_overrides(unsigned long current)
return current;
}
/* Initialize IGD OpRegion, called from ACPI code */
static int update_igd_opregion(igd_opregion_t *opregion)
{
/* FIXME: Add platform specific mailbox initialization */
return 0;
}
unsigned long southcluster_write_acpi_tables(const struct device *device, unsigned long current,
struct acpi_rsdp *rsdp)
{
acpi_header_t *ssdt2;
global_nvs_t *gnvs = cbmem_find(CBMEM_ID_ACPI_GNVS);
if (!CONFIG(DISABLE_HPET)) {
current = acpi_write_hpet(device, current, rsdp);
current = acpi_align_current(current);
}
if (CONFIG(INTEL_GMA_ADD_VBT)) {
igd_opregion_t *opregion;
printk(BIOS_DEBUG, "ACPI: * IGD OpRegion\n");
opregion = (igd_opregion_t *)current;
intel_gma_init_igd_opregion(opregion);
if (gnvs)
gnvs->aslb = (u32)opregion;
update_igd_opregion(opregion);
current += sizeof(igd_opregion_t);
current = acpi_align_current(current);
}
ssdt2 = (acpi_header_t *)current;
memset(ssdt2, 0, sizeof(acpi_header_t));
acpi_create_serialio_ssdt(ssdt2);