From: Simon Glass <sjg@chromium.org>
Date: Wed, 4 Nov 2020 16:57:16 +0000 (-0700)
Subject: x86: Add a layout for Chrome OS verified boot
X-Git-Tag: v2021.10~443^2~43
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=dac7778d74d052380f904622e738dc749b695afc;p=platform%2Fkernel%2Fu-boot.git

x86: Add a layout for Chrome OS verified boot

Add definitions for part of the vboot context used with verified boot.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
---

diff --git a/arch/x86/include/asm/acpi/vbnv_layout.h b/arch/x86/include/asm/acpi/vbnv_layout.h
new file mode 100644
index 0000000..8906552
--- /dev/null
+++ b/arch/x86/include/asm/acpi/vbnv_layout.h
@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright 2020 Google LLC
+ */
+
+#ifndef __ASM_ACPI_VBNV_LAYOUT_H__
+#define __ASM_ACPI_VBNV_LAYOUT_H__
+
+#define VBOOT_VBNV_BLOCK_SIZE 16	/* Size of NV storage block in bytes */
+
+/* Constants for NV storage, for use with ACPI */
+#define HEADER_OFFSET			0
+#define HEADER_MASK			0xc0
+#define HEADER_SIGNATURE		0x40
+#define HEADER_FIRMWARE_SETTINGS_RESET	0x20
+#define HEADER_KERNEL_SETTINGS_RESET	0x10
+
+#define BOOT_OFFSET			1
+#define BOOT_DEBUG_RESET_MODE		0x80
+#define BOOT_DISABLE_DEV_REQUEST	0x40
+#define BOOT_DISPLAY_REQUEST		0x20
+#define BOOT_TRY_B_COUNT_MASK		0x0f
+
+#define RECOVERY_OFFSET			2
+#define LOCALIZATION_OFFSET		3
+
+#define DEV_FLAGS_OFFSET		4
+#define DEV_BOOT_USB_MASK		0x01
+#define DEV_BOOT_SIGNED_ONLY_MASK	0x02
+#define DEV_ENABLE_UDC			0x40
+
+#define MISC_FLAGS_OFFSET		8
+#define MISC_FLAGS_BATTERY_CUTOFF_MASK	0x08
+
+#define KERNEL_FIELD_OFFSET		11
+#define CRC_OFFSET			15
+
+#endif /* __ASM_ACPI_VBNV_LAYOUT_H__ */