brain-hackers_pepepper-mirror/u-boot-brain
1
0
Fork 0
mirror of https://github.com/brain-hackers/u-boot-brain synced 2024-06-09 23:36:03 +09:00
Code Issues Projects Releases Wiki Activity

x86: Define the Chrome OS GNVS region

Browse Source 
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 <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass 2020-11-04 09:57:34 -07:00 committed by Bin Meng
parent 18434aec1b
commit 08059c9c02
1 changed files with 50 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

51
arch/x86/include/asm/intel_gnvs.h
View File

@ -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