It is not possible to boot Chrome OS properly without passing some basic
information from U-Boot. This applies even if verified boot is not being
used. Add a structure definition for this.
Signed-off-by: Simon Glass <s...@chromium.org>
Reviewed-by: Bin Meng <bmeng...@gmail.com>
---
(no changes since v2)
Changes in v2:
- Rename struct chromeos_acpi to struct chromeos_acpi_gnvs
- Fix comment style
arch/x86/include/asm/intel_gnvs.h | 51 ++++++++++++++++++++++++++++++-
1 file changed, 50 insertions(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/intel_gnvs.h
b/arch/x86/include/asm/intel_gnvs.h
index c1e9d65779f..632307427cd 100644
--- a/arch/x86/include/asm/intel_gnvs.h
+++ b/arch/x86/include/asm/intel_gnvs.h
@@ -9,6 +9,55 @@
#ifndef _INTEL_GNVS_H_
#define _INTEL_GNVS_H_
+/*
+ * The chromeos_acpi portion of ACPI GNVS is assumed to live from offset
+ * 0x100 - 0x1000. When defining acpi_global_nvs, use check_member
+ * to ensure that it is properly aligned:
+ *
+ * check_member(acpi_global_nvs, chromeos, GNVS_CHROMEOS_ACPI_OFFSET);
+ */
+#define GNVS_CHROMEOS_ACPI_OFFSET 0x100
+
+enum {
+ CHSW_RECOVERY_X86 = BIT(1),
+ CHSW_RECOVERY_EC = BIT(2),
+ CHSW_DEVELOPER_SWITCH = BIT(5),
+ CHSW_FIRMWARE_WP = BIT(9),
+};
+
+enum {
+ FIRMWARE_TYPE_AUTO_DETECT = -1,
+ FIRMWARE_TYPE_RECOVERY = 0,
+ FIRMWARE_TYPE_NORMAL = 1,
+ FIRMWARE_TYPE_DEVELOPER = 2,
+ FIRMWARE_TYPE_NETBOOT = 3,
+ FIRMWARE_TYPE_LEGACY = 4,
+};
+
+struct __packed chromeos_acpi_gnvs {
+ /* ChromeOS-specific */
+ u32 boot_reason; /* 00 boot reason */
+ u32 active_main_fw; /* 04 (0=recovery, 1=A, 2=B) */
+ u32 activeec_fw; /* 08 (0=RO, 1=RW) */
+ u16 switches; /* 0c CHSW */
+ u8 vbt4[256]; /* 0e HWID */
+ u8 vbt5[64]; /* 10e FWID */
+ u8 vbt6[64]; /* 14e FRID - 275 */
+ u32 main_fw_type; /* 18e (2 = developer mode) */
+ u32 vbt8; /* 192 recovery reason */
+ u32 vbt9; /* 196 fmap base address */
+ u8 vdat[3072]; /* 19a VDAT space filled by verified boot */
+ u32 vbt10; /* d9a smbios bios version */
+ u32 mehh[8]; /* d9e management engine hash */
+ u32 ramoops_base; /* dbe ramoops base address */
+ u32 ramoops_len; /* dc2 ramoops length */
+ u32 vpd_ro_base; /* dc6 pointer to RO_VPD */
+ u32 vpd_ro_size; /* dca size of RO_VPD */
+ u32 vpd_rw_base; /* dce pointer to RW_VPD */
+ u32 vpd_rw_size; /* dd2 size of RW_VPD */
+ u8 pad[298]; /* dd6-eff */
+};
+
struct __packed acpi_global_nvs {
/* Miscellaneous */
u8 pcnt; /* 0x00 - Processor Count */
@@ -31,7 +80,7 @@ struct __packed acpi_global_nvs {
u8 unused1[0x100 - 0x3d]; /* Pad out to 256 bytes */
#ifdef CONFIG_CHROMEOS
/* ChromeOS-specific (0x100 - 0xfff) */
- struct chromeos_acpi chromeos;
+ struct chromeos_acpi_gnvs chromeos;
#else
u8 unused2[0x1000 - 0x100]; /* Pad out to 4096 bytes */
#endif
--
2.29.1.341.ge80a0c044ae-goog
