#ifndef _HP_BIOSCFG_H_
#define _HP_BIOSCFG_H_
#include <linux/wmi.h>
#include <linux/types.h>
#include <linux/string.h>
#include <linux/device.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/nls.h>
#define DRIVER_NAME "hp-bioscfg"
#define MAX_BUFF_SIZE 512
#define MAX_KEY_MOD_SIZE 256
#define MAX_PASSWD_SIZE 64
#define MAX_PREREQUISITES_SIZE 20
#define MAX_REQ_ELEM_SIZE 128
#define MAX_VALUES_SIZE 16
#define MAX_ENCODINGS_SIZE 16
#define MAX_ELEMENTS_SIZE 16
#define SPM_STR_DESC "Secure Platform Management"
#define SPM_STR "SPM"
#define SURE_START_DESC "Sure Start"
#define SURE_START_STR "Sure_Start"
#define SETUP_PASSWD "Setup Password"
#define POWER_ON_PASSWD "Power-On Password"
#define LANG_CODE_STR "en_US.UTF-8"
#define SCHEDULE_POWER_ON "Scheduled Power-On"
#define COMMA_SEP ","
#define SEMICOLON_SEP ";"
#define UTF_PREFIX "<utf-16/>"
#define BEAM_PREFIX "<BEAM/>"
enum mechanism_values {
PASSWORD = 0x00,
SIGNING_KEY = 0x01,
ENDORSEMENT_KEY = 0x02,
};
#define BIOS_ADMIN "bios-admin"
#define POWER_ON "power-on"
#define BIOS_SPM "enhanced-bios-auth"
#define PASSWD_MECHANISM_TYPES "password"
#define HP_WMI_BIOS_GUID "5FB7F034-2C63-45E9-BE91-3D44E2C707E4"
#define HP_WMI_BIOS_STRING_GUID "988D08E3-68F4-4C35-AF3E-6A1B8106F83C"
#define HP_WMI_BIOS_INTEGER_GUID "8232DE3D-663D-4327-A8F4-E293ADB9BF05"
#define HP_WMI_BIOS_ENUMERATION_GUID "2D114B49-2DFB-4130-B8FE-4A3C09E75133"
#define HP_WMI_BIOS_ORDERED_LIST_GUID "14EA9746-CE1F-4098-A0E0-7045CB4DA745"
#define HP_WMI_BIOS_PASSWORD_GUID "322F2028-0F84-4901-988E-015176049E2D"
#define HP_WMI_SET_BIOS_SETTING_GUID "1F4C91EB-DC5C-460B-951D-C7CB9B4B8D5E"
enum hp_wmi_spm_commandtype {
HPWMI_SECUREPLATFORM_GET_STATE = 0x10,
HPWMI_SECUREPLATFORM_SET_KEK = 0x11,
HPWMI_SECUREPLATFORM_SET_SK = 0x12,
};
enum hp_wmi_surestart_commandtype {
HPWMI_SURESTART_GET_LOG_COUNT = 0x01,
HPWMI_SURESTART_GET_LOG = 0x02,
};
enum hp_wmi_command {
HPWMI_READ = 0x01,
HPWMI_WRITE = 0x02,
HPWMI_ODM = 0x03,
HPWMI_SURESTART = 0x20006,
HPWMI_GM = 0x20008,
HPWMI_SECUREPLATFORM = 0x20010,
};
struct bios_return {
u32 sigpass;
u32 return_code;
};
enum wmi_error_values {
SUCCESS = 0x00,
CMD_FAILED = 0x01,
INVALID_SIGN = 0x02,
INVALID_CMD_VALUE = 0x03,
INVALID_CMD_TYPE = 0x04,
INVALID_DATA_SIZE = 0x05,
INVALID_CMD_PARAM = 0x06,
ENCRYP_CMD_REQUIRED = 0x07,
NO_SECURE_SESSION = 0x08,
SECURE_SESSION_FOUND = 0x09,
SECURE_SESSION_FAILED = 0x0A,
AUTH_FAILED = 0x0B,
INVALID_BIOS_AUTH = 0x0E,
NONCE_DID_NOT_MATCH = 0x18,
GENERIC_ERROR = 0x1C,
BIOS_ADMIN_POLICY_NOT_MET = 0x28,
BIOS_ADMIN_NOT_SET = 0x38,
P21_NO_PROVISIONED = 0x1000,
P21_PROVISION_IN_PROGRESS = 0x1001,
P21_IN_USE = 0x1002,
HEP_NOT_ACTIVE = 0x1004,
HEP_ALREADY_SET = 0x1006,
HEP_CHECK_STATE = 0x1007,
};
struct common_data {
u8 display_name[MAX_BUFF_SIZE];
u8 path[MAX_BUFF_SIZE];
u32 is_readonly;
u32 display_in_ui;
u32 requires_physical_presence;
u32 sequence;
u32 prerequisites_size;
u8 prerequisites[MAX_PREREQUISITES_SIZE][MAX_BUFF_SIZE];
u32 security_level;
};
struct string_data {
struct common_data common;
struct kobject *attr_name_kobj;
u8 current_value[MAX_BUFF_SIZE];
u8 new_value[MAX_BUFF_SIZE];
u32 min_length;
u32 max_length;
};
struct integer_data {
struct common_data common;
struct kobject *attr_name_kobj;
u32 current_value;
u32 new_value;
u32 lower_bound;
u32 upper_bound;
u32 scalar_increment;
};
struct enumeration_data {
struct common_data common;
struct kobject *attr_name_kobj;
u8 current_value[MAX_BUFF_SIZE];
u8 new_value[MAX_BUFF_SIZE];
u32 possible_values_size;
u8 possible_values[MAX_VALUES_SIZE][MAX_BUFF_SIZE];
};
struct ordered_list_data {
struct common_data common;
struct kobject *attr_name_kobj;
u8 current_value[MAX_BUFF_SIZE];
u8 new_value[MAX_BUFF_SIZE];
u32 elements_size;
u8 elements[MAX_ELEMENTS_SIZE][MAX_BUFF_SIZE];
};
struct password_data {
struct common_data common;
struct kobject *attr_name_kobj;
u8 current_password[MAX_PASSWD_SIZE];
u8 new_password[MAX_PASSWD_SIZE];
u32 min_password_length;
u32 max_password_length;
u32 encodings_size;
u8 encodings[MAX_ENCODINGS_SIZE][MAX_BUFF_SIZE];
bool is_enabled;
u32 role;
u32 mechanism;
};
struct secure_platform_data {
struct kobject *attr_name_kobj;
u8 attribute_name[MAX_BUFF_SIZE];
u8 *endorsement_key;
u8 *signing_key;
u8 *auth_token;
bool is_enabled;
u32 mechanism;
};
struct bioscfg_priv {
struct kset *authentication_dir_kset;
struct kset *main_dir_kset;
struct device *class_dev;
struct string_data *string_data;
u32 string_instances_count;
struct integer_data *integer_data;
u32 integer_instances_count;
struct enumeration_data *enumeration_data;
u32 enumeration_instances_count;
struct ordered_list_data *ordered_list_data;
u32 ordered_list_instances_count;
struct password_data *password_data;
u32 password_instances_count;
struct kobject *sure_start_attr_kobj;
struct secure_platform_data spm_data;
u8 display_name_language_code[MAX_BUFF_SIZE];
bool pending_reboot;
struct mutex mutex;
};
extern struct bioscfg_priv bioscfg_drv;
enum hp_wmi_data_type {
HPWMI_STRING_TYPE,
HPWMI_INTEGER_TYPE,
HPWMI_ENUMERATION_TYPE,
HPWMI_ORDERED_LIST_TYPE,
HPWMI_PASSWORD_TYPE,
HPWMI_SECURE_PLATFORM_TYPE,
HPWMI_SURE_START_TYPE,
};
enum hp_wmi_data_elements {
NAME = 0,
VALUE = 1,
PATH = 2,
IS_READONLY = 3,
DISPLAY_IN_UI = 4,
REQUIRES_PHYSICAL_PRESENCE = 5,
SEQUENCE = 6,
PREREQUISITES_SIZE = 7,
PREREQUISITES = 8,
SECURITY_LEVEL = 9,
STR_MIN_LENGTH = 10,
STR_MAX_LENGTH = 11,
STR_ELEM_CNT = 12,
INT_LOWER_BOUND = 10,
INT_UPPER_BOUND = 11,
INT_SCALAR_INCREMENT = 12,
INT_ELEM_CNT = 13,
ENUM_CURRENT_VALUE = 10,
ENUM_SIZE = 11,
ENUM_POSSIBLE_VALUES = 12,
ENUM_ELEM_CNT = 13,
ORD_LIST_SIZE = 10,
ORD_LIST_ELEMENTS = 11,
ORD_ELEM_CNT = 12,
PSWD_MIN_LENGTH = 10,
PSWD_MAX_LENGTH = 11,
PSWD_SIZE = 12,
PSWD_ENCODINGS = 13,
PSWD_IS_SET = 14,
PSWD_ELEM_CNT = 15,
};
#define GET_INSTANCE_ID(type) \
static int get_##type##_instance_id(struct kobject *kobj) \
{ \
int i; \
\
for (i = 0; i < bioscfg_drv.type##_instances_count; i++) { \
if (bioscfg_drv.type##_data[i].attr_name_kobj && \
!strcmp(kobj->name, bioscfg_drv.type##_data[i].attr_name_kobj->name)) \
return i; \
} \
return -EIO; \
}
#define ATTRIBUTE_S_PROPERTY_SHOW(name, type) \
static ssize_t name##_show(struct kobject *kobj, struct kobj_attribute *attr, \
char *buf) \
{ \
int i = get_##type##_instance_id(kobj); \
if (i >= 0) \
return sysfs_emit(buf, "%s\n", bioscfg_drv.type##_data[i].name); \
return -EIO; \
}
#define ATTRIBUTE_N_PROPERTY_SHOW(name, type) \
static ssize_t name##_show(struct kobject *kobj, struct kobj_attribute *attr, \
char *buf) \
{ \
int i = get_##type##_instance_id(kobj); \
if (i >= 0) \
return sysfs_emit(buf, "%d\n", bioscfg_drv.type##_data[i].name); \
return -EIO; \
}
#define ATTRIBUTE_PROPERTY_STORE(curr_val, type) \
static ssize_t curr_val##_store(struct kobject *kobj, \
struct kobj_attribute *attr, \
const char *buf, size_t count) \
{ \
char *attr_value = NULL; \
int i; \
int ret = -EIO; \
\
attr_value = kstrdup(buf, GFP_KERNEL); \
if (!attr_value) \
return -ENOMEM; \
\
ret = hp_enforce_single_line_input(attr_value, count); \
if (!ret) { \
i = get_##type##_instance_id(kobj); \
if (i >= 0) \
ret = validate_##type##_input(i, attr_value); \
} \
if (!ret) \
ret = hp_set_attribute(kobj->name, attr_value); \
if (!ret) { \
update_##type##_value(i, attr_value); \
if (bioscfg_drv.type##_data[i].common.requires_physical_presence) \
hp_set_reboot_and_signal_event(); \
} \
hp_clear_all_credentials(); \
kfree(attr_value); \
\
return ret ? ret : count; \
}
#define ATTRIBUTE_SPM_N_PROPERTY_SHOW(name, type) \
static ssize_t name##_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) \
{ \
return sysfs_emit(buf, "%d\n", bioscfg_drv.type##_data.name); \
}
#define ATTRIBUTE_SPM_S_PROPERTY_SHOW(name, type) \
static ssize_t name##_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) \
{ \
return sysfs_emit(buf, "%s\n", bioscfg_drv.type##_data.name); \
}
#define ATTRIBUTE_VALUES_PROPERTY_SHOW(name, type, sep) \
static ssize_t name##_show(struct kobject *kobj, \
struct kobj_attribute *attr, char *buf) \
{ \
int i; \
int len = 0; \
int instance_id = get_##type##_instance_id(kobj); \
\
if (instance_id < 0) \
return 0; \
\
for (i = 0; i < bioscfg_drv.type##_data[instance_id].name##_size; i++) { \
if (i) \
len += sysfs_emit_at(buf, len, "%s", sep); \
\
len += sysfs_emit_at(buf, len, "%s", \
bioscfg_drv.type##_data[instance_id].name[i]); \
} \
len += sysfs_emit_at(buf, len, "\n"); \
return len; \
}
#define ATTRIBUTE_S_COMMON_PROPERTY_SHOW(name, type) \
static ssize_t name##_show(struct kobject *kobj, struct kobj_attribute *attr, \
char *buf) \
{ \
int i = get_##type##_instance_id(kobj); \
if (i >= 0) \
return sysfs_emit(buf, "%s\n", bioscfg_drv.type##_data[i].common.name); \
return -EIO; \
}
extern struct kobj_attribute common_display_langcode;
int hp_populate_string_buffer_data(u8 *buffer_ptr, u32 *buffer_size,
int instance_id,
struct kobject *attr_name_kobj);
int hp_alloc_string_data(void);
void hp_exit_string_attributes(void);
int hp_populate_string_package_data(union acpi_object *str_obj,
int instance_id,
struct kobject *attr_name_kobj);
int hp_populate_integer_buffer_data(u8 *buffer_ptr, u32 *buffer_size,
int instance_id,
struct kobject *attr_name_kobj);
int hp_alloc_integer_data(void);
void hp_exit_integer_attributes(void);
int hp_populate_integer_package_data(union acpi_object *integer_obj,
int instance_id,
struct kobject *attr_name_kobj);
int hp_populate_enumeration_buffer_data(u8 *buffer_ptr, u32 *buffer_size,
int instance_id,
struct kobject *attr_name_kobj);
int hp_alloc_enumeration_data(void);
void hp_exit_enumeration_attributes(void);
int hp_populate_enumeration_package_data(union acpi_object *enum_obj,
int instance_id,
struct kobject *attr_name_kobj);
int hp_populate_ordered_list_buffer_data(u8 *buffer_ptr,
u32 *buffer_size,
int instance_id,
struct kobject *attr_name_kobj);
int hp_alloc_ordered_list_data(void);
void hp_exit_ordered_list_attributes(void);
int hp_populate_ordered_list_package_data(union acpi_object *order_obj,
int instance_id,
struct kobject *attr_name_kobj);
int hp_populate_password_buffer_data(u8 *buffer_ptr, u32 *buffer_size,
int instance_id,
struct kobject *attr_name_kobj);
int hp_populate_password_package_data(union acpi_object *password_obj,
int instance_id,
struct kobject *attr_name_kobj);
int hp_alloc_password_data(void);
int hp_get_password_instance_for_type(const char *name);
int hp_clear_all_credentials(void);
int hp_set_attribute(const char *a_name, const char *a_value);
void hp_exit_password_attributes(void);
void hp_exit_secure_platform_attributes(void);
int hp_populate_secure_platform_data(struct kobject *attr_name_kobj);
int hp_populate_security_buffer(u16 *buffer, const char *authentication);
int hp_wmi_set_bios_setting(u16 *input_buffer, u32 input_size);
int hp_wmi_perform_query(int query, enum hp_wmi_command command,
void *buffer, u32 insize, u32 outsize);
void hp_exit_sure_start_attributes(void);
int hp_populate_sure_start_data(struct kobject *attr_name_kobj);
void hp_exit_attr_set_interface(void);
int hp_init_attr_set_interface(void);
size_t hp_calculate_string_buffer(const char *str);
size_t hp_calculate_security_buffer(const char *authentication);
void *hp_ascii_to_utf16_unicode(u16 *p, const u8 *str);
int hp_get_integer_from_buffer(u8 **buffer, u32 *buffer_size, u32 *integer);
int hp_get_string_from_buffer(u8 **buffer, u32 *buffer_size, char *dst, u32 dst_size);
int hp_convert_hexstr_to_str(const char *input, u32 input_len, char **str, int *len);
int hp_encode_outsize_for_pvsz(int outsize);
int hp_enforce_single_line_input(char *buf, size_t count);
void hp_set_reboot_and_signal_event(void);
ssize_t display_name_language_code_show(struct kobject *kobj,
struct kobj_attribute *attr,
char *buf);
union acpi_object *hp_get_wmiobj_pointer(int instance_id, const char *guid_string);
int hp_get_instance_count(const char *guid_string);
void hp_update_attribute_permissions(bool isreadonly, struct kobj_attribute *current_val);
void hp_friendly_user_name_update(char *path, const char *attr_name,
char *attr_display, int attr_size);
int hp_wmi_error_and_message(int error_code);
int hp_get_common_data_from_buffer(u8 **buffer_ptr, u32 *buffer_size, struct common_data *common);
#endif
