[PATCH v3 09/57] x86: acpi: Expand the GNVS

Simon Glass
2020-09-06T21:43:17Z

Expand this to 4KB so that it is possible to add custom information to it.
On Chromebooks this is used to pass verified-boot information.

Signed-off-by: Simon Glass <sjg@chromium.org>
---

(no changes since v1)

arch/x86/include/asm/acpi/global_nvs.h | 2 +-
arch/x86/include/asm/intel_gnvs.h | 1 +
2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/acpi/global_nvs.h b/arch/x86/include/asm/acpi/global_nvs.h
index a552cf6374f..46383629cc5 100644
--- a/arch/x86/include/asm/acpi/global_nvs.h
+++ b/arch/x86/include/asm/acpi/global_nvs.h
@@ -16,6 +16,6 @@
* DSDT, since it is created by code, so ACPI_GNVS_ADDR is unused.
*/
#define ACPI_GNVS_ADDR 0xdeadbeef
-#define ACPI_GNVS_SIZE 0x100
+#define ACPI_GNVS_SIZE 0x1000

#endif /* _ACPI_GNVS_H_ */
diff --git a/arch/x86/include/asm/intel_gnvs.h b/arch/x86/include/asm/intel_gnvs.h
index e2d479d4f32..c1e9d65779f 100644
--- a/arch/x86/include/asm/intel_gnvs.h
+++ b/arch/x86/include/asm/intel_gnvs.h
@@ -36,6 +36,7 @@ struct __packed acpi_global_nvs {
u8 unused2[0x1000 - 0x100]; /* Pad out to 4096 bytes */
#endif
};
+
#ifdef CONFIG_CHROMEOS
check_member(acpi_global_nvs, chromeos, GNVS_CHROMEOS_ACPI_OFFSET);
#endif
--
2.28.0.526.ge36021eeef-goog