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ACPI: Separate ChromeOS NVS in ASL

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For builds with MAINBOARD_HAS_CHROMEOS=y but CHROMEOS=n, there
is reduced dsdt.aml size and reduced GNVS allocation from cbmem.

More importantly, it's less error-prone when the OperationRegion
size is not hard-coded inside the .asl files.

Change-Id: I54b0d63a41561f9a5d9ebde77967e6d21ee014cd
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49477
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Kyösti Mälkki
2021-01-12 15:23:25 +02:00
parent fa5f9b5aff
commit ae7ac8a723
14 changed files with 41 additions and 59 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
src/acpi/acpigen_extern.asl
View File

@@ -18,3 +18,9 @@ External (NVB1, IntObj)
External (NVS1, IntObj)
OperationRegion (DNVS, SystemMemory, NVB1, NVS1)
#endif
#if CONFIG(CHROMEOS)
External (NVB2, IntObj)
External (NVS2, IntObj)
OperationRegion (CNVS, SystemMemory, NVB2, NVS2)
#endif

4
src/acpi/dsdt_top.asl
View File

@@ -1,3 +1,7 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#include <acpi/acpigen_extern.asl>
#if CONFIG(CHROMEOS)
#include <vendorcode/google/chromeos/acpi/gnvs.asl>
#endif

11
src/acpi/gnvs.c
View File

@@ -41,7 +41,7 @@ void acpi_create_gnvs(void)
gnvs_size = 0x100;
if (CONFIG(ACPI_HAS_DEVICE_NVS))
gnvs_size = 0x2000;
else if (CONFIG(MAINBOARD_HAS_CHROMEOS))
else if (CONFIG(CHROMEOS))
gnvs_size = 0x1000;
gnvs = cbmem_add(CBMEM_ID_ACPI_GNVS, gnvs_size);
@@ -72,9 +72,16 @@ void acpi_fill_gnvs(void)
acpigen_write_scope("\\");
acpigen_write_name_dword("NVB0", (uintptr_t)gnvs);
acpigen_write_name_dword("NVS0", CONFIG(MAINBOARD_HAS_CHROMEOS) ? 0x1000 : 0x100);
acpigen_write_name_dword("NVS0", 0x100);
acpigen_pop_len();
if (CONFIG(CHROMEOS)) {
acpigen_write_scope("\\");
acpigen_write_name_dword("NVB2", (uintptr_t)gnvs + GNVS_CHROMEOS_ACPI_OFFSET);
acpigen_write_name_dword("NVS2", 0xf00);
acpigen_pop_len();
}
if (CONFIG(ACPI_HAS_DEVICE_NVS)) {
acpigen_write_scope("\\");
acpigen_write_name_dword("NVB1", (uintptr_t)gnvs + GNVS_DEVICE_NVS_OFFSET);