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Patch queue for efi - 2017-07-29

Browse source 
A lot of EFI greatness this time around. Thanks a lot to the
 two amazing new contributors
 
   Heinrich Schuchardt and
   Rob Clark
 
 we now gain
 
   - stable objects across multiple bootefi invocations
   - fixes for shim
   - fixes for ipxe
   - protocol installation
   - device path conversion to/from text
   - working "lsefi" support in grub
   - working notifiers
   - various bug fixes
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Merge tag 'signed-efi-next' of git://github.com/agraf/u-boot

Patch queue for efi - 2017-07-29

A lot of EFI greatness this time around. Thanks a lot to the
two amazing new contributors

  Heinrich Schuchardt and
  Rob Clark

we now gain

  - stable objects across multiple bootefi invocations
  - fixes for shim
  - fixes for ipxe
  - protocol installation
  - device path conversion to/from text
  - working "lsefi" support in grub
  - working notifiers
  - various bug fixes
This commit is contained in:
Tom Rini 2017-07-31 07:27:45 -04:00
commit 2218b32d88
13 changed files with 1075 additions and 348 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

135
cmd/bootefi.c
View file

@ -20,6 +20,8 @@
DECLARE_GLOBAL_DATA_PTR;
static uint8_t efi_obj_list_initalized;
/*
* When booting using the "bootefi" command, we don't know which
* physical device the file came from. So we create a pseudo-device
@ -54,14 +56,6 @@ static struct efi_device_path_file_path bootefi_device_path[] = {
}
};
static efi_status_t EFIAPI bootefi_open_dp(void *handle, efi_guid_t *protocol,
void **protocol_interface, void *agent_handle,
void *controller_handle, uint32_t attributes)
{
*protocol_interface = bootefi_device_path;
return EFI_SUCCESS;
}
/* The EFI loaded_image interface for the image executed via "bootefi" */
static struct efi_loaded_image loaded_image_info = {
.device_handle = bootefi_device_path,
@ -78,7 +72,7 @@ static struct efi_object loaded_image_info_obj = {
* return handle which points to loaded_image_info
*/
.guid = &efi_guid_loaded_image,
.open = &efi_return_handle,
.protocol_interface = &loaded_image_info,
},
{
/*
@ -86,7 +80,15 @@ static struct efi_object loaded_image_info_obj = {
* bootefi_device_path
*/
.guid = &efi_guid_device_path,
.open = &bootefi_open_dp,
.protocol_interface = bootefi_device_path,
},
{
.guid = &efi_guid_console_control,
.protocol_interface = (void *) &efi_console_control
},
{
.guid = &efi_guid_device_path_to_text_protocol,
.protocol_interface = (void *) &efi_device_path_to_text
},
},
};
@ -99,11 +101,43 @@ static struct efi_object bootefi_device_obj = {
/* When asking for the device path interface, return
* bootefi_device_path */
.guid = &efi_guid_device_path,
.open = &bootefi_open_dp,
.protocol_interface = bootefi_device_path
}
},
};
/* Initialize and populate EFI object list */
static void efi_init_obj_list(void)
{
efi_obj_list_initalized = 1;
list_add_tail(&loaded_image_info_obj.link, &efi_obj_list);
list_add_tail(&bootefi_device_obj.link, &efi_obj_list);
efi_console_register();
#ifdef CONFIG_PARTITIONS
efi_disk_register();
#endif
#if defined(CONFIG_LCD) || defined(CONFIG_DM_VIDEO)
efi_gop_register();
#endif
#ifdef CONFIG_NET
void *nethandle = loaded_image_info.device_handle;
efi_net_register(&nethandle);
if (!memcmp(bootefi_device_path[0].str, "N\0e\0t", 6))
loaded_image_info.device_handle = nethandle;
else
loaded_image_info.device_handle = bootefi_device_path;
#endif
#ifdef CONFIG_GENERATE_SMBIOS_TABLE
efi_smbios_register();
#endif
/* Initialize EFI runtime services */
efi_reset_system_init();
efi_get_time_init();
}
static void *copy_fdt(void *fdt)
{
u64 fdt_size = fdt_totalsize(fdt);
@ -147,15 +181,28 @@ static void *copy_fdt(void *fdt)
return new_fdt;
}
static ulong efi_do_enter(void *image_handle,
struct efi_system_table *st,
asmlinkage ulong (*entry)(void *image_handle,
struct efi_system_table *st))
{
efi_status_t ret = EFI_LOAD_ERROR;
if (entry)
ret = entry(image_handle, st);
st->boottime->exit(image_handle, ret, 0, NULL);
return ret;
}
#ifdef CONFIG_ARM64
static unsigned long efi_run_in_el2(ulong (*entry)(void *image_handle,
struct efi_system_table *st), void *image_handle,
struct efi_system_table *st)
static unsigned long efi_run_in_el2(asmlinkage ulong (*entry)(
void *image_handle, struct efi_system_table *st),
void *image_handle, struct efi_system_table *st)
{
/* Enable caches again */
dcache_enable();
return entry(image_handle, st);
return efi_do_enter(image_handle, st, entry);
}
#endif
@ -168,6 +215,7 @@ static unsigned long do_bootefi_exec(void *efi, void *fdt)
ulong (*entry)(void *image_handle, struct efi_system_table *st)
asmlinkage;
ulong fdt_pages, fdt_size, fdt_start, fdt_end;
const efi_guid_t fdt_guid = EFI_FDT_GUID;
bootm_headers_t img = { 0 };
/*
@ -186,9 +234,7 @@ static unsigned long do_bootefi_exec(void *efi, void *fdt)
}
/* Link to it in the efi tables */
systab.tables[0].guid = EFI_FDT_GUID;
systab.tables[0].table = fdt;
systab.nr_tables = 1;
efi_install_configuration_table(&fdt_guid, fdt);
/* And reserve the space in the memory map */
fdt_start = ((ulong)fdt) & ~EFI_PAGE_MASK;
@ -201,7 +247,7 @@ static unsigned long do_bootefi_exec(void *efi, void *fdt)
EFI_BOOT_SERVICES_DATA, true);
} else {
printf("WARNING: Invalid device tree, expect boot to fail\n");
systab.nr_tables = 0;
efi_install_configuration_table(&fdt_guid, NULL);
}
/* Load the EFI payload */
@ -210,38 +256,14 @@ static unsigned long do_bootefi_exec(void *efi, void *fdt)
return -ENOENT;
/* Initialize and populate EFI object list */
INIT_LIST_HEAD(&efi_obj_list);
list_add_tail(&loaded_image_info_obj.link, &efi_obj_list);
list_add_tail(&bootefi_device_obj.link, &efi_obj_list);
#ifdef CONFIG_PARTITIONS
efi_disk_register();
#endif
#ifdef CONFIG_LCD
efi_gop_register();
#endif
#ifdef CONFIG_NET
void *nethandle = loaded_image_info.device_handle;
efi_net_register(&nethandle);
if (!memcmp(bootefi_device_path[0].str, "N\0e\0t", 6))
loaded_image_info.device_handle = nethandle;
else
loaded_image_info.device_handle = bootefi_device_path;
#endif
#ifdef CONFIG_GENERATE_SMBIOS_TABLE
efi_smbios_register();
#endif
/* Initialize EFI runtime services */
efi_reset_system_init();
efi_get_time_init();
if (!efi_obj_list_initalized)
efi_init_obj_list();
/* Call our payload! */
debug("%s:%d Jumping to 0x%lx\n", __func__, __LINE__, (long)entry);
if (setjmp(&loaded_image_info.exit_jmp)) {
efi_status_t status = loaded_image_info.exit_status;
return status == EFI_SUCCESS ? 0 : -EINVAL;
return loaded_image_info.exit_status;
}
#ifdef CONFIG_ARM64
@ -260,7 +282,7 @@ static unsigned long do_bootefi_exec(void *efi, void *fdt)
}
#endif
return entry(&loaded_image_info, &systab);
return efi_do_enter(&loaded_image_info, &systab, entry);
}
@ -269,7 +291,7 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
char *saddr, *sfdt;
unsigned long addr, fdt_addr = 0;
int r = 0;
unsigned long r;
if (argc < 2)
return CMD_RET_USAGE;
@ -294,12 +316,13 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
printf("## Starting EFI application at %08lx ...\n", addr);
r = do_bootefi_exec((void *)addr, (void*)fdt_addr);
printf("## Application terminated, r = %d\n", r);
printf("## Application terminated, r = %lu\n",
r & ~EFI_ERROR_MASK);
if (r != 0)
r = 1;
return r;
if (r != EFI_SUCCESS)
return 1;
else
return 0;
}
#ifdef CONFIG_SYS_LONGHELP
@ -325,7 +348,7 @@ void efi_set_bootdev(const char *dev, const char *devnr, const char *path)
{
__maybe_unused struct blk_desc *desc;
char devname[32] = { 0 }; /* dp->str is u16[32] long */
char *colon;
char *colon, *s;
#if defined(CONFIG_BLK) || CONFIG_IS_ENABLED(ISO_PARTITION)
desc = blk_get_dev(dev, simple_strtol(devnr, NULL, 10));
@ -370,5 +393,9 @@ void efi_set_bootdev(const char *dev, const char *devnr, const char *path)
} else {
snprintf(devname, sizeof(devname), "%s", path);
}
/* DOS style file path: */
s = devname;
while ((s = strchr(s, '/')))
*s++ = '\\';
ascii2unicode(bootefi_image_path[0].str, devname);
}

50
include/efi.h
View file

@ -39,19 +39,43 @@ struct efi_device_path;
#define EFI_BITS_PER_LONG 64
#endif
#define EFI_SUCCESS 0
#define EFI_LOAD_ERROR (1 | (1UL << (EFI_BITS_PER_LONG - 1)))
#define EFI_INVALID_PARAMETER (2 | (1UL << (EFI_BITS_PER_LONG - 1)))
#define EFI_UNSUPPORTED (3 | (1UL << (EFI_BITS_PER_LONG - 1)))
#define EFI_BAD_BUFFER_SIZE (4 | (1UL << (EFI_BITS_PER_LONG - 1)))
#define EFI_BUFFER_TOO_SMALL (5 | (1UL << (EFI_BITS_PER_LONG - 1)))
#define EFI_NOT_READY (6 | (1UL << (EFI_BITS_PER_LONG - 1)))
#define EFI_DEVICE_ERROR (7 | (1UL << (EFI_BITS_PER_LONG - 1)))
#define EFI_WRITE_PROTECTED (8 | (1UL << (EFI_BITS_PER_LONG - 1)))
#define EFI_OUT_OF_RESOURCES (9 | (1UL << (EFI_BITS_PER_LONG - 1)))
#define EFI_NOT_FOUND (14 | (1UL << (EFI_BITS_PER_LONG - 1)))
#define EFI_ACCESS_DENIED (15 | (1UL << (EFI_BITS_PER_LONG - 1)))
#define EFI_SECURITY_VIOLATION (26 | (1UL << (EFI_BITS_PER_LONG - 1)))
/* Bit mask for EFI status code with error */
#define EFI_ERROR_MASK (1UL << (EFI_BITS_PER_LONG - 1))
/* Status codes returned by EFI protocols */
#define EFI_SUCCESS 0
#define EFI_LOAD_ERROR (EFI_ERROR_MASK | 1)
#define EFI_INVALID_PARAMETER (EFI_ERROR_MASK | 2)
#define EFI_UNSUPPORTED (EFI_ERROR_MASK | 3)
#define EFI_BAD_BUFFER_SIZE (EFI_ERROR_MASK | 4)
#define EFI_BUFFER_TOO_SMALL (EFI_ERROR_MASK | 5)
#define EFI_NOT_READY (EFI_ERROR_MASK | 6)
#define EFI_DEVICE_ERROR (EFI_ERROR_MASK | 7)
#define EFI_WRITE_PROTECTED (EFI_ERROR_MASK | 8)
#define EFI_OUT_OF_RESOURCES (EFI_ERROR_MASK | 9)
#define EFI_VOLUME_CORRUPTED (EFI_ERROR_MASK | 10)
#define EFI_VOLUME_FULL (EFI_ERROR_MASK | 11)
#define EFI_NO_MEDIA (EFI_ERROR_MASK | 12)
#define EFI_MEDIA_CHANGED (EFI_ERROR_MASK | 13)
#define EFI_NOT_FOUND (EFI_ERROR_MASK | 14)
#define EFI_ACCESS_DENIED (EFI_ERROR_MASK | 15)
#define EFI_NO_RESPONSE (EFI_ERROR_MASK | 16)
#define EFI_NO_MAPPING (EFI_ERROR_MASK | 17)
#define EFI_TIMEOUT (EFI_ERROR_MASK | 18)
#define EFI_NOT_STARTED (EFI_ERROR_MASK | 19)
#define EFI_ALREADY_STARTED (EFI_ERROR_MASK | 20)
#define EFI_ABORTED (EFI_ERROR_MASK | 21)
#define EFI_ICMP_ERROR (EFI_ERROR_MASK | 22)
#define EFI_TFTP_ERROR (EFI_ERROR_MASK | 23)
#define EFI_PROTOCOL_ERROR (EFI_ERROR_MASK | 24)
#define EFI_INCOMPATIBLE_VERSION (EFI_ERROR_MASK | 25)
#define EFI_SECURITY_VIOLATION (EFI_ERROR_MASK | 26)
#define EFI_CRC_ERROR (EFI_ERROR_MASK | 27)
#define EFI_END_OF_MEDIA (EFI_ERROR_MASK | 28)
#define EFI_END_OF_FILE (EFI_ERROR_MASK | 31)
#define EFI_INVALID_LANGUAGE (EFI_ERROR_MASK | 32)
#define EFI_COMPROMISED_DATA (EFI_ERROR_MASK | 33)
#define EFI_IP_ADDRESS_CONFLICT (EFI_ERROR_MASK | 34)
#define EFI_HTTP_ERROR (EFI_ERROR_MASK | 35)
typedef unsigned long efi_status_t;
typedef u64 efi_physical_addr_t;

86
include/efi_api.h
View file

@ -22,20 +22,33 @@
#endif
/* Types and defines for EFI CreateEvent */
enum efi_event_type {
enum efi_timer_delay {
EFI_TIMER_STOP = 0,
EFI_TIMER_PERIODIC = 1,
EFI_TIMER_RELATIVE = 2
};
#define EVT_NOTIFY_WAIT 0x00000100
#define EVT_NOTIFY_SIGNAL 0x00000200
#define UINTN size_t
#define EVT_TIMER 0x80000000
#define EVT_RUNTIME 0x40000000
#define EVT_NOTIFY_WAIT 0x00000100
#define EVT_NOTIFY_SIGNAL 0x00000200
#define EVT_SIGNAL_EXIT_BOOT_SERVICES 0x00000201
#define EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE 0x60000202
#define TPL_APPLICATION 0x04
#define TPL_CALLBACK 0x08
#define TPL_NOTIFY 0x10
#define TPL_HIGH_LEVEL 0x1F
struct efi_event;
/* EFI Boot Services table */
struct efi_boot_services {
struct efi_table_hdr hdr;
efi_status_t (EFIAPI *raise_tpl)(unsigned long new_tpl);
void (EFIAPI *restore_tpl)(unsigned long old_tpl);
efi_status_t (EFIAPI *raise_tpl)(UINTN new_tpl);
void (EFIAPI *restore_tpl)(UINTN old_tpl);
efi_status_t (EFIAPI *allocate_pages)(int, int, unsigned long,
efi_physical_addr_t *);
@ -46,19 +59,21 @@ struct efi_boot_services {
efi_status_t (EFIAPI *allocate_pool)(int, unsigned long, void **);
efi_status_t (EFIAPI *free_pool)(void *);
efi_status_t (EFIAPI *create_event)(enum efi_event_type type,
unsigned long notify_tpl,
void (EFIAPI *notify_function) (void *event,
void *context),
void *notify_context, void **event);
efi_status_t (EFIAPI *set_timer)(void *event, int type,
uint64_t trigger_time);
efi_status_t (EFIAPI *create_event)(uint32_t type,
UINTN notify_tpl,
void (EFIAPI *notify_function) (
struct efi_event *event,
void *context),
void *notify_context, struct efi_event **event);
efi_status_t (EFIAPI *set_timer)(struct efi_event *event,
enum efi_timer_delay type,
uint64_t trigger_time);
efi_status_t (EFIAPI *wait_for_event)(unsigned long number_of_events,
void *event, unsigned long *index);
efi_status_t (EFIAPI *signal_event)(void *event);
efi_status_t (EFIAPI *close_event)(void *event);
efi_status_t (EFIAPI *check_event)(void *event);
struct efi_event **event, unsigned long *index);
efi_status_t (EFIAPI *signal_event)(struct efi_event *event);
efi_status_t (EFIAPI *close_event)(struct efi_event *event);
efi_status_t (EFIAPI *check_event)(struct efi_event *event);
#define EFI_NATIVE_INTERFACE 0x00000000
efi_status_t (EFIAPI *install_protocol_interface)(
void **handle, efi_guid_t *protocol,
int protocol_interface_type, void *protocol_interface);
@ -71,7 +86,7 @@ struct efi_boot_services {
void **);
void *reserved;
efi_status_t (EFIAPI *register_protocol_notify)(
efi_guid_t *protocol, void *event,
efi_guid_t *protocol, struct efi_event *event,
void **registration);
efi_status_t (EFIAPI *locate_handle)(
enum efi_locate_search_type search_type,
@ -334,6 +349,11 @@ struct simple_text_output_mode {
bool cursor_visible;
};
#define EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL_GUID \
EFI_GUID(0x387477c2, 0x69c7, 0x11d2, \
0x8e, 0x39, 0x0, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
struct efi_simple_text_output_protocol {
void *reset;
efi_status_t (EFIAPI *output_string)(
@ -368,13 +388,17 @@ struct efi_input_key {
s16 unicode_char;
};
#define EFI_SIMPLE_TEXT_INPUT_PROTOCOL_GUID \
EFI_GUID(0x387477c1, 0x69c7, 0x11d2, \
0x8e, 0x39, 0x0, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
struct efi_simple_input_interface {
efi_status_t(EFIAPI *reset)(struct efi_simple_input_interface *this,
bool ExtendedVerification);
efi_status_t(EFIAPI *read_key_stroke)(
struct efi_simple_input_interface *this,
struct efi_input_key *key);
void *wait_for_key;
struct efi_event *wait_for_key;
};
#define CONSOLE_CONTROL_GUID \
@ -395,6 +419,30 @@ struct efi_console_control_protocol
uint16_t *password);
};
#define EFI_DEVICE_PATH_TO_TEXT_PROTOCOL_GUID \
EFI_GUID(0x8b843e20, 0x8132, 0x4852, \
0x90, 0xcc, 0x55, 0x1a, 0x4e, 0x4a, 0x7f, 0x1c)
struct efi_device_path_protocol
{
uint8_t type;
uint8_t sub_type;
uint16_t length;
uint8_t data[];
};
struct efi_device_path_to_text_protocol
{
uint16_t *(EFIAPI *convert_device_node_to_text)(
struct efi_device_path_protocol *device_node,
bool display_only,
bool allow_shortcuts);
uint16_t *(EFIAPI *convert_device_path_to_text)(
struct efi_device_path_protocol *device_path,
bool display_only,
bool allow_shortcuts);
};
#define EFI_GOP_GUID \
EFI_GUID(0x9042a9de, 0x23dc, 0x4a38, \
0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a)

125
include/efi_loader.h
View file

@ -15,49 +15,65 @@
#include <linux/list.h>
int __efi_entry_check(void);
int __efi_exit_check(void);
const char *__efi_nesting_inc(void);
const char *__efi_nesting_dec(void);
/*
* Enter the u-boot world from UEFI:
*/
#define EFI_ENTRY(format, ...) do { \
efi_restore_gd(); \
debug("EFI: Entry %s(" format ")\n", __func__, ##__VA_ARGS__); \
assert(__efi_entry_check()); \
debug("%sEFI: Entry %s(" format ")\n", __efi_nesting_inc(), \
__func__, ##__VA_ARGS__); \
} while(0)
#define EFI_EXIT(ret) efi_exit_func(ret);
/*
* Exit the u-boot world back to UEFI:
*/
#define EFI_EXIT(ret) ({ \
efi_status_t _r = ret; \
debug("%sEFI: Exit: %s: %u\n", __efi_nesting_dec(), \
__func__, (u32)(_r & ~EFI_ERROR_MASK)); \
assert(__efi_exit_check()); \
_r; \
})
/*
* Callback into UEFI world from u-boot:
*/
#define EFI_CALL(exp) do { \
debug("%sEFI: Call: %s\n", __efi_nesting_inc(), #exp); \
assert(__efi_exit_check()); \
exp; \
assert(__efi_entry_check()); \
debug("%sEFI: Return From: %s\n", __efi_nesting_dec(), #exp); \
} while(0)
extern struct efi_runtime_services efi_runtime_services;
extern struct efi_system_table systab;
extern const struct efi_simple_text_output_protocol efi_con_out;
extern const struct efi_simple_input_interface efi_con_in;
extern struct efi_simple_input_interface efi_con_in;
extern const struct efi_console_control_protocol efi_console_control;
extern const struct efi_device_path_to_text_protocol efi_device_path_to_text;
extern const efi_guid_t efi_guid_console_control;
extern const efi_guid_t efi_guid_device_path;
extern const efi_guid_t efi_guid_loaded_image;
extern const efi_guid_t efi_guid_device_path_to_text_protocol;
extern unsigned int __efi_runtime_start, __efi_runtime_stop;
extern unsigned int __efi_runtime_rel_start, __efi_runtime_rel_stop;
/*
* While UEFI objects can have callbacks, you can also call functions on
* protocols (classes) themselves. This struct maps a protocol GUID to its
* interface (usually a struct with callback functions).
*/
struct efi_class_map {
const efi_guid_t *guid;
const void *interface;
};
/*
* When the UEFI payload wants to open a protocol on an object to get its
* interface (usually a struct with callback functions), this struct maps the
* protocol GUID to the respective protocol handler open function for that
* object protocol combination.
*/
* protocol GUID to the respective protocol interface */
struct efi_handler {
const efi_guid_t *guid;
efi_status_t (EFIAPI *open)(void *handle,
efi_guid_t *protocol, void **protocol_interface,
void *agent_handle, void *controller_handle,
uint32_t attributes);
void *protocol_interface;
};
/*
@ -70,15 +86,49 @@ struct efi_handler {
struct efi_object {
/* Every UEFI object is part of a global object list */
struct list_head link;
/* We support up to 4 "protocols" an object can be accessed through */
struct efi_handler protocols[4];
/* We support up to 8 "protocols" an object can be accessed through */
struct efi_handler protocols[8];
/* The object spawner can either use this for data or as identifier */
void *handle;
};
#define EFI_PROTOCOL_OBJECT(_guid, _protocol) (struct efi_object){ \
.protocols = {{ \
.guid = &(_guid), \
.protocol_interface = (void *)(_protocol), \
}}, \
.handle = (void *)(_protocol), \
}
/**
* struct efi_event
*
* @type: Type of event, see efi_create_event
* @notify_tpl: Task priority level of notifications
* @trigger_time: Period of the timer
* @trigger_next: Next time to trigger the timer
* @nofify_function: Function to call when the event is triggered
* @notify_context: Data to be passed to the notify function
* @trigger_type: Type of timer, see efi_set_timer
* @signaled: The notify function was already called
*/
struct efi_event {
uint32_t type;
UINTN notify_tpl;
void (EFIAPI *notify_function)(struct efi_event *event, void *context);
void *notify_context;
u64 trigger_next;
u64 trigger_time;
enum efi_timer_delay trigger_type;
int signaled;
};
/* This list contains all UEFI objects we know of */
extern struct list_head efi_obj_list;
/* Called by bootefi to make console interface available */
int efi_console_register(void);
/* Called by bootefi to make all disk storage accessible as EFI objects */
int efi_disk_register(void);
/* Called by bootefi to make GOP (graphical) interface available */
@ -91,28 +141,30 @@ void efi_smbios_register(void);
/* Called by networking code to memorize the dhcp ack package */
void efi_net_set_dhcp_ack(void *pkt, int len);
/*
* Stub implementation for a protocol opener that just returns the handle as
* interface
*/
efi_status_t EFIAPI efi_return_handle(void *handle,
efi_guid_t *protocol, void **protocol_interface,
void *agent_handle, void *controller_handle,
uint32_t attributes);
/* Called from places to check whether a timer expired */
void efi_timer_check(void);
/* PE loader implementation */
void *efi_load_pe(void *efi, struct efi_loaded_image *loaded_image_info);
/* Called once to store the pristine gd pointer */
void efi_save_gd(void);
/* Called from EFI_ENTRY on callback entry to put gd into the gd register */
/* Special case handler for error/abort that just tries to dtrt to get
* back to u-boot world */
void efi_restore_gd(void);
/* Called from EFI_EXIT on callback exit to restore the gd register */
efi_status_t efi_exit_func(efi_status_t ret);
/* Call this to relocate the runtime section to an address space */
void efi_runtime_relocate(ulong offset, struct efi_mem_desc *map);
/* Call this to set the current device name */
void efi_set_bootdev(const char *dev, const char *devnr, const char *path);
/* Call this to create an event */
efi_status_t efi_create_event(uint32_t type, UINTN notify_tpl,
void (EFIAPI *notify_function) (
struct efi_event *event,
void *context),
void *notify_context, struct efi_event **event);
/* Call this to set a timer */
efi_status_t efi_set_timer(struct efi_event *event, enum efi_timer_delay type,
uint64_t trigger_time);
/* Call this to signal an event */
void efi_signal_event(struct efi_event *event);
/* Generic EFI memory allocator, call this to get memory */
void *efi_alloc(uint64_t len, int memory_type);
@ -152,6 +204,11 @@ static inline void ascii2unicode(u16 *unicode, const char *ascii)
*(unicode++) = *(ascii++);
}
static inline int guidcmp(const efi_guid_t *g1, const efi_guid_t *g2)
{
return memcmp(g1, g2, sizeof(efi_guid_t));
}
/*
* Use these to indicate that your code / data should go into the EFI runtime
* section and thus still be available when the OS is running

3
lib/efi_loader/Makefile
View file

@ -15,8 +15,9 @@ always := $(efiprogs-y)
obj-$(CONFIG_CMD_BOOTEFI_HELLO) += helloworld_efi.o
obj-y += efi_image_loader.o efi_boottime.o efi_runtime.o efi_console.o
obj-y += efi_memory.o
obj-y += efi_memory.o efi_device_path_to_text.o
obj-$(CONFIG_LCD) += efi_gop.o
obj-$(CONFIG_DM_VIDEO) += efi_gop.o
obj-$(CONFIG_PARTITIONS) += efi_disk.o
obj-$(CONFIG_NET) += efi_net.o
obj-$(CONFIG_GENERATE_SMBIOS_TABLE) += efi_smbios.o

742
lib/efi_loader/efi_boottime.c
View file

@ -49,6 +49,31 @@ static struct efi_configuration_table __efi_runtime_data efi_conf_table[2];
static volatile void *efi_gd, *app_gd;
#endif
static int entry_count;
static int nesting_level;
/* Called on every callback entry */
int __efi_entry_check(void)
{
int ret = entry_count++ == 0;
#ifdef CONFIG_ARM
assert(efi_gd);
app_gd = gd;
gd = efi_gd;
#endif
return ret;
}
/* Called on every callback exit */
int __efi_exit_check(void)
{
int ret = --entry_count == 0;
#ifdef CONFIG_ARM
gd = app_gd;
#endif
return ret;
}
/* Called from do_bootefi_exec() */
void efi_save_gd(void)
{
@ -57,51 +82,102 @@ void efi_save_gd(void)
#endif
}
/* Called on every callback entry */
/*
* Special case handler for error/abort that just forces things back
* to u-boot world so we can dump out an abort msg, without any care
* about returning back to UEFI world.
*/
void efi_restore_gd(void)
{
#ifdef CONFIG_ARM
/* Only restore if we're already in EFI context */
if (!efi_gd)
return;
if (gd != efi_gd)
app_gd = gd;
gd = efi_gd;
#endif
}
/* Called on every callback exit */
efi_status_t efi_exit_func(efi_status_t ret)
/*
* Two spaces per indent level, maxing out at 10.. which ought to be
* enough for anyone ;-)
*/
static const char *indent_string(int level)
{
#ifdef CONFIG_ARM
gd = app_gd;
#endif
const char *indent = " ";
const int max = strlen(indent);
level = min(max, level * 2);
return &indent[max - level];
}
const char *__efi_nesting_inc(void)
{
return indent_string(nesting_level++);
}
const char *__efi_nesting_dec(void)
{
return indent_string(--nesting_level);
}
/* Low 32 bit */
#define EFI_LOW32(a) (a & 0xFFFFFFFFULL)
/* High 32 bit */
#define EFI_HIGH32(a) (a >> 32)
/*
* 64bit division by 10 implemented as multiplication by 1 / 10
*
* Decimals of one tenth: 0x1 / 0xA = 0x0.19999...
*/
#define EFI_TENTH 0x199999999999999A
static u64 efi_div10(u64 a)
{
u64 prod;
u64 rem;
u64 ret;
ret = EFI_HIGH32(a) * EFI_HIGH32(EFI_TENTH);
prod = EFI_HIGH32(a) * EFI_LOW32(EFI_TENTH);
rem = EFI_LOW32(prod);
ret += EFI_HIGH32(prod);
prod = EFI_LOW32(a) * EFI_HIGH32(EFI_TENTH);
rem += EFI_LOW32(prod);
ret += EFI_HIGH32(prod);
prod = EFI_LOW32(a) * EFI_LOW32(EFI_TENTH);
rem += EFI_HIGH32(prod);
ret += EFI_HIGH32(rem);
/* Round to nearest integer */
if (rem >= (1 << 31))
++ret;
return ret;
}
void efi_signal_event(struct efi_event *event)
{
if (event->signaled)
return;
event->signaled = 1;
if (event->type & EVT_NOTIFY_SIGNAL) {
EFI_CALL(event->notify_function(event, event->notify_context));
}
}
static efi_status_t efi_unsupported(const char *funcname)
{
debug("EFI: App called into unimplemented function %s\n", funcname);
return EFI_EXIT(EFI_UNSUPPORTED);
}
static int guidcmp(const efi_guid_t *g1, const efi_guid_t *g2)
static unsigned long EFIAPI efi_raise_tpl(UINTN new_tpl)
{
return memcmp(g1, g2, sizeof(efi_guid_t));
}
static unsigned long EFIAPI efi_raise_tpl(unsigned long new_tpl)
{
EFI_ENTRY("0x%lx", new_tpl);
EFI_ENTRY("0x%zx", new_tpl);
return EFI_EXIT(0);
}
static void EFIAPI efi_restore_tpl(unsigned long old_tpl)
static void EFIAPI efi_restore_tpl(UINTN old_tpl)
{
EFI_ENTRY("0x%lx", old_tpl);
EFI_EXIT(efi_unsupported(__func__));
EFI_ENTRY("0x%zx", old_tpl);
efi_unsupported(__func__);
}
static efi_status_t EFIAPI efi_allocate_pages_ext(int type, int memory_type,
@ -162,151 +238,289 @@ static efi_status_t EFIAPI efi_free_pool_ext(void *buffer)
}
/*
* Our event capabilities are very limited. Only support a single
* event to exist, so we don't need to maintain lists.
* Our event capabilities are very limited. Only a small limited
* number of events is allowed to coexist.
*/
static struct {
enum efi_event_type type;
u32 trigger_type;
u32 trigger_time;
u64 trigger_next;
unsigned long notify_tpl;
void (EFIAPI *notify_function) (void *event, void *context);
void *notify_context;
} efi_event = {
/* Disable timers on bootup */
.trigger_next = -1ULL,
};
static struct efi_event efi_events[16];
static efi_status_t EFIAPI efi_create_event(
enum efi_event_type type, ulong notify_tpl,
void (EFIAPI *notify_function) (void *event,
void *context),
void *notify_context, void **event)
efi_status_t efi_create_event(uint32_t type, UINTN notify_tpl,
void (EFIAPI *notify_function) (
struct efi_event *event,
void *context),
void *notify_context, struct efi_event **event)
{
EFI_ENTRY("%d, 0x%lx, %p, %p", type, notify_tpl, notify_function,
notify_context);
if (efi_event.notify_function) {
/* We only support one event at a time */
return EFI_EXIT(EFI_OUT_OF_RESOURCES);
}
int i;
if (event == NULL)
return EFI_EXIT(EFI_INVALID_PARAMETER);
return EFI_INVALID_PARAMETER;
if ((type & EVT_NOTIFY_SIGNAL) && (type & EVT_NOTIFY_WAIT))
return EFI_EXIT(EFI_INVALID_PARAMETER);
return EFI_INVALID_PARAMETER;
if ((type & (EVT_NOTIFY_SIGNAL|EVT_NOTIFY_WAIT)) &&
notify_function == NULL)
return EFI_EXIT(EFI_INVALID_PARAMETER);
return EFI_INVALID_PARAMETER;
efi_event.type = type;
efi_event.notify_tpl = notify_tpl;
efi_event.notify_function = notify_function;
efi_event.notify_context = notify_context;
*event = &efi_event;
return EFI_EXIT(EFI_SUCCESS);
for (i = 0; i < ARRAY_SIZE(efi_events); ++i) {
if (efi_events[i].type)
continue;
efi_events[i].type = type;
efi_events[i].notify_tpl = notify_tpl;
efi_events[i].notify_function = notify_function;
efi_events[i].notify_context = notify_context;
/* Disable timers on bootup */
efi_events[i].trigger_next = -1ULL;
efi_events[i].signaled = 0;
*event = &efi_events[i];
return EFI_SUCCESS;
}
return EFI_OUT_OF_RESOURCES;
}
static efi_status_t EFIAPI efi_create_event_ext(
uint32_t type, UINTN notify_tpl,
void (EFIAPI *notify_function) (
struct efi_event *event,
void *context),
void *notify_context, struct efi_event **event)
{
EFI_ENTRY("%d, 0x%zx, %p, %p", type, notify_tpl, notify_function,
notify_context);
return EFI_EXIT(efi_create_event(type, notify_tpl, notify_function,
notify_context, event));
}
/*
* Our timers have to work without interrupts, so we check whenever keyboard
* input or disk accesses happen if enough time elapsed for it to fire.
*/
void efi_timer_check(void)
{
int i;
u64 now = timer_get_us();
if (now >= efi_event.trigger_next) {
/* Triggering! */
if (efi_event.trigger_type == EFI_TIMER_PERIODIC)
efi_event.trigger_next += efi_event.trigger_time / 10;
if (efi_event.type & (EVT_NOTIFY_WAIT | EVT_NOTIFY_SIGNAL))
efi_event.notify_function(&efi_event,
efi_event.notify_context);
for (i = 0; i < ARRAY_SIZE(efi_events); ++i) {
if (!efi_events[i].type ||
!(efi_events[i].type & EVT_TIMER) ||
efi_events[i].trigger_type == EFI_TIMER_STOP ||
now < efi_events[i].trigger_next)
continue;
if (efi_events[i].trigger_type == EFI_TIMER_PERIODIC) {
efi_events[i].trigger_next +=
efi_events[i].trigger_time;
efi_events[i].signaled = 0;
}
efi_signal_event(&efi_events[i]);
}
WATCHDOG_RESET();
}
static efi_status_t EFIAPI efi_set_timer(void *event, int type,
uint64_t trigger_time)
efi_status_t efi_set_timer(struct efi_event *event, enum efi_timer_delay type,
uint64_t trigger_time)
{
/* We don't have 64bit division available everywhere, so limit timer
* distances to 32bit bits. */
u32 trigger32 = trigger_time;
int i;
/*
* The parameter defines a multiple of 100ns.
* We use multiples of 1000ns. So divide by 10.
*/
trigger_time = efi_div10(trigger_time);
for (i = 0; i < ARRAY_SIZE(efi_events); ++i) {
if (event != &efi_events[i])
continue;
if (!(event->type & EVT_TIMER))
break;
switch (type) {
case EFI_TIMER_STOP:
event->trigger_next = -1ULL;
break;
case EFI_TIMER_PERIODIC:
case EFI_TIMER_RELATIVE:
event->trigger_next =
timer_get_us() + trigger_time;
break;
default:
return EFI_INVALID_PARAMETER;
}
event->trigger_type = type;
event->trigger_time = trigger_time;
return EFI_SUCCESS;
}
return EFI_INVALID_PARAMETER;
}
static efi_status_t EFIAPI efi_set_timer_ext(struct efi_event *event,
enum efi_timer_delay type,
uint64_t trigger_time)
{
EFI_ENTRY("%p, %d, %"PRIx64, event, type, trigger_time);
if (trigger32 < trigger_time) {
printf("WARNING: Truncating timer from %"PRIx64" to %x\n",
trigger_time, trigger32);
}
if (event != &efi_event) {
/* We only support one event at a time */
return EFI_EXIT(EFI_INVALID_PARAMETER);
}
switch (type) {
case EFI_TIMER_STOP:
efi_event.trigger_next = -1ULL;
break;
case EFI_TIMER_PERIODIC:
case EFI_TIMER_RELATIVE:
efi_event.trigger_next = timer_get_us() + (trigger32 / 10);
break;
default:
return EFI_EXIT(EFI_INVALID_PARAMETER);
}
efi_event.trigger_type = type;
efi_event.trigger_time = trigger_time;
return EFI_EXIT(EFI_SUCCESS);
return EFI_EXIT(efi_set_timer(event, type, trigger_time));
}
static efi_status_t EFIAPI efi_wait_for_event(unsigned long num_events,
void *event, unsigned long *index)
struct efi_event **event,
unsigned long *index)
{
u64 now;
int i, j;
EFI_ENTRY("%ld, %p, %p", num_events, event, index);
now = timer_get_us();
while (now < efi_event.trigger_next) { }
/* Check parameters */
if (!num_events || !event)
return EFI_EXIT(EFI_INVALID_PARAMETER);
for (i = 0; i < num_events; ++i) {
for (j = 0; j < ARRAY_SIZE(efi_events); ++j) {
if (event[i] == &efi_events[j])
goto known_event;
}
return EFI_EXIT(EFI_INVALID_PARAMETER);
known_event:
if (!event[i]->type || event[i]->type & EVT_NOTIFY_SIGNAL)
return EFI_EXIT(EFI_INVALID_PARAMETER);
}
/* Wait for signal */
for (;;) {
for (i = 0; i < num_events; ++i) {
if (event[i]->signaled)
goto out;
}
/* Allow events to occur. */
efi_timer_check();
}
out:
/*
* Reset the signal which is passed to the caller to allow periodic
* events to occur.
*/
event[i]->signaled = 0;
if (index)
*index = i;
return EFI_EXIT(EFI_SUCCESS);
}
static efi_status_t EFIAPI efi_signal_event_ext(struct efi_event *event)
{
int i;
EFI_ENTRY("%p", event);
for (i = 0; i < ARRAY_SIZE(efi_events); ++i) {
if (event != &efi_events[i])
continue;
efi_signal_event(event);
break;
}
return EFI_EXIT(EFI_SUCCESS);
}
static efi_status_t EFIAPI efi_close_event(struct efi_event *event)
{
int i;
EFI_ENTRY("%p", event);
for (i = 0; i < ARRAY_SIZE(efi_events); ++i) {
if (event == &efi_events[i]) {
event->type = 0;
event->trigger_next = -1ULL;
event->signaled = 0;
return EFI_EXIT(EFI_SUCCESS);
}
}
return EFI_EXIT(EFI_INVALID_PARAMETER);
}
static efi_status_t EFIAPI efi_check_event(struct efi_event *event)
{
int i;
EFI_ENTRY("%p", event);
efi_timer_check();
return EFI_EXIT(EFI_SUCCESS);
}
static efi_status_t EFIAPI efi_signal_event(void *event)
{
EFI_ENTRY("%p", event);
return EFI_EXIT(EFI_SUCCESS);
}
static efi_status_t EFIAPI efi_close_event(void *event)
{
EFI_ENTRY("%p", event);
efi_event.trigger_next = -1ULL;
return EFI_EXIT(EFI_SUCCESS);
}
static efi_status_t EFIAPI efi_check_event(void *event)
{
EFI_ENTRY("%p", event);
return EFI_EXIT(EFI_NOT_READY);
for (i = 0; i < ARRAY_SIZE(efi_events); ++i) {
if (event != &efi_events[i])
continue;
if (!event->type || event->type & EVT_NOTIFY_SIGNAL)
break;
if (event->signaled)
return EFI_EXIT(EFI_SUCCESS);
return EFI_EXIT(EFI_NOT_READY);
}
return EFI_EXIT(EFI_INVALID_PARAMETER);
}
static efi_status_t EFIAPI efi_install_protocol_interface(void **handle,
efi_guid_t *protocol, int protocol_interface_type,
void *protocol_interface)
{
struct list_head *lhandle;
int i;
efi_status_t r;
if (!handle || !protocol ||
protocol_interface_type != EFI_NATIVE_INTERFACE) {
r = EFI_INVALID_PARAMETER;
goto out;
}
/* Create new handle if requested. */
if (!*handle) {
r = EFI_OUT_OF_RESOURCES;
goto out;
}
/* Find object. */
list_for_each(lhandle, &efi_obj_list) {
struct efi_object *efiobj;
efiobj = list_entry(lhandle, struct efi_object, link);
if (efiobj->handle != *handle)
continue;
/* Check if protocol is already installed on the handle. */
for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
struct efi_handler *handler = &efiobj->protocols[i];
if (!handler->guid)
continue;
if (!guidcmp(handler->guid, protocol)) {
r = EFI_INVALID_PARAMETER;
goto out;
}
}
/* Install protocol in first empty slot. */
for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
struct efi_handler *handler = &efiobj->protocols[i];
if (handler->guid)
continue;
handler->guid = protocol;
handler->protocol_interface = protocol_interface;
r = EFI_SUCCESS;
goto out;
}
r = EFI_OUT_OF_RESOURCES;
goto out;
}
r = EFI_INVALID_PARAMETER;
out:
return r;
}
static efi_status_t EFIAPI efi_install_protocol_interface_ext(void **handle,
efi_guid_t *protocol, int protocol_interface_type,
void *protocol_interface)
{
EFI_ENTRY("%p, %p, %d, %p", handle, protocol, protocol_interface_type,
protocol_interface);
return EFI_EXIT(EFI_OUT_OF_RESOURCES);
return EFI_EXIT(efi_install_protocol_interface(handle, protocol,
protocol_interface_type,
protocol_interface));
}
static efi_status_t EFIAPI efi_reinstall_protocol_interface(void *handle,
efi_guid_t *protocol, void *old_interface,
void *new_interface)
@ -318,13 +532,56 @@ static efi_status_t EFIAPI efi_reinstall_protocol_interface(void *handle,
static efi_status_t EFIAPI efi_uninstall_protocol_interface(void *handle,
efi_guid_t *protocol, void *protocol_interface)
{
struct list_head *lhandle;
int i;
efi_status_t r = EFI_NOT_FOUND;
if (!handle || !protocol) {
r = EFI_INVALID_PARAMETER;
goto out;
}
list_for_each(lhandle, &efi_obj_list) {
struct efi_object *efiobj;
efiobj = list_entry(lhandle, struct efi_object, link);
if (efiobj->handle != handle)
continue;
for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
struct efi_handler *handler = &efiobj->protocols[i];
const efi_guid_t *hprotocol = handler->guid;
if (!hprotocol)
continue;
if (!guidcmp(hprotocol, protocol)) {
if (handler->protocol_interface) {
r = EFI_ACCESS_DENIED;
} else {
handler->guid = 0;
r = EFI_SUCCESS;
}
goto out;
}
}
}
out:
return r;
}
static efi_status_t EFIAPI efi_uninstall_protocol_interface_ext(void *handle,
efi_guid_t *protocol, void *protocol_interface)
{
EFI_ENTRY("%p, %p, %p", handle, protocol, protocol_interface);
return EFI_EXIT(EFI_NOT_FOUND);
return EFI_EXIT(efi_uninstall_protocol_interface(handle, protocol,
protocol_interface));
}
static efi_status_t EFIAPI efi_register_protocol_notify(efi_guid_t *protocol,
void *event,
struct efi_event *event,
void **registration)
{
EFI_ENTRY("%p, %p, %p", protocol, event, registration);
@ -362,9 +619,6 @@ static efi_status_t EFIAPI efi_locate_handle(
struct list_head *lhandle;
unsigned long size = 0;
EFI_ENTRY("%d, %p, %p, %p, %p", search_type, protocol, search_key,
buffer_size, buffer);
/* Count how much space we need */
list_for_each(lhandle, &efi_obj_list) {
struct efi_object *efiobj;
@ -376,7 +630,7 @@ static efi_status_t EFIAPI efi_locate_handle(
if (*buffer_size < size) {
*buffer_size = size;
return EFI_EXIT(EFI_BUFFER_TOO_SMALL);
return EFI_BUFFER_TOO_SMALL;
}
/* Then fill the array */
@ -389,7 +643,19 @@ static efi_status_t EFIAPI efi_locate_handle(
}
*buffer_size = size;
return EFI_EXIT(EFI_SUCCESS);
return EFI_SUCCESS;
}
static efi_status_t EFIAPI efi_locate_handle_ext(
enum efi_locate_search_type search_type,
efi_guid_t *protocol, void *search_key,
unsigned long *buffer_size, efi_handle_t *buffer)
{
EFI_ENTRY("%d, %p, %p, %p, %p", search_type, protocol, search_key,
buffer_size, buffer);
return EFI_EXIT(efi_locate_handle(search_type, protocol, search_key,
buffer_size, buffer));
}
static efi_status_t EFIAPI efi_locate_device_path(efi_guid_t *protocol,
@ -400,6 +666,17 @@ static efi_status_t EFIAPI efi_locate_device_path(efi_guid_t *protocol,
return EFI_EXIT(EFI_NOT_FOUND);
}
/* Collapses configuration table entries, removing index i */
static void efi_remove_configuration_table(int i)
{
struct efi_configuration_table *this = &efi_conf_table[i];
struct efi_configuration_table *next = &efi_conf_table[i+1];
struct efi_configuration_table *end = &efi_conf_table[systab.nr_tables];
memmove(this, next, (ulong)end - (ulong)next);
systab.nr_tables--;
}
efi_status_t efi_install_configuration_table(const efi_guid_t *guid, void *table)
{
int i;
@ -407,11 +684,17 @@ efi_status_t efi_install_configuration_table(const efi_guid_t *guid, void *table
/* Check for guid override */
for (i = 0; i < systab.nr_tables; i++) {
if (!guidcmp(guid, &efi_conf_table[i].guid)) {
efi_conf_table[i].table = table;
if (table)
efi_conf_table[i].table = table;
else
efi_remove_configuration_table(i);
return EFI_SUCCESS;
}
}
if (!table)
return EFI_NOT_FOUND;
/* No override, check for overflow */
if (i >= ARRAY_SIZE(efi_conf_table))
return EFI_OUT_OF_RESOURCES;
@ -442,7 +725,6 @@ static efi_status_t EFIAPI efi_load_image(bool boot_policy,
.protocols = {
{
.guid = &efi_guid_loaded_image,
.open = &efi_return_handle,
},
},
};
@ -452,6 +734,7 @@ static efi_status_t EFIAPI efi_load_image(bool boot_policy,
EFI_ENTRY("%d, %p, %p, %p, %ld, %p", boot_policy, parent_image,
file_path, source_buffer, source_size, image_handle);
info = malloc(sizeof(*info));
loaded_image_info_obj.protocols[0].protocol_interface = info;
obj = malloc(sizeof(loaded_image_info_obj));
memset(info, 0, sizeof(*info));
memcpy(obj, &loaded_image_info_obj, sizeof(loaded_image_info_obj));
@ -488,7 +771,11 @@ static efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle,
return EFI_EXIT(info->exit_status);
}
__efi_nesting_dec();
__efi_exit_check();
entry(image_handle, &systab);
__efi_entry_check();
__efi_nesting_inc();
/* Should usually never get here */
return EFI_EXIT(EFI_SUCCESS);
@ -588,7 +875,7 @@ static efi_status_t EFIAPI efi_set_watchdog_timer(unsigned long timeout,
{
EFI_ENTRY("%ld, 0x%"PRIx64", %ld, %p", timeout, watchdog_code,
data_size, watchdog_data);
return EFI_EXIT(efi_unsupported(__func__));
return efi_unsupported(__func__);
}
static efi_status_t EFIAPI efi_connect_controller(
@ -635,9 +922,53 @@ static efi_status_t EFIAPI efi_protocols_per_handle(void *handle,
efi_guid_t ***protocol_buffer,
unsigned long *protocol_buffer_count)
{
unsigned long buffer_size;
struct efi_object *efiobj;
unsigned long i, j;
struct list_head *lhandle;
efi_status_t r;
EFI_ENTRY("%p, %p, %p", handle, protocol_buffer,
protocol_buffer_count);
return EFI_EXIT(EFI_OUT_OF_RESOURCES);
if (!handle || !protocol_buffer || !protocol_buffer_count)
return EFI_EXIT(EFI_INVALID_PARAMETER);
*protocol_buffer = NULL;
*protocol_buffer_count = 0;
list_for_each(lhandle, &efi_obj_list) {
efiobj = list_entry(lhandle, struct efi_object, link);
if (efiobj->handle != handle)
continue;
/* Count protocols */
for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
if (efiobj->protocols[i].guid)
++*protocol_buffer_count;
}
/* Copy guids */
if (*protocol_buffer_count) {
buffer_size = sizeof(efi_guid_t *) *
*protocol_buffer_count;
r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES,
buffer_size,
(void **)protocol_buffer);
if (r != EFI_SUCCESS)
return EFI_EXIT(r);
j = 0;
for (i = 0; i < ARRAY_SIZE(efiobj->protocols); ++i) {
if (efiobj->protocols[i].guid) {
(*protocol_buffer)[j] = (void *)
efiobj->protocols[i].guid;
++j;
}
}
}
break;
}
return EFI_EXIT(EFI_SUCCESS);
}
static efi_status_t EFIAPI efi_locate_handle_buffer(
@ -645,32 +976,63 @@ static efi_status_t EFIAPI efi_locate_handle_buffer(
efi_guid_t *protocol, void *search_key,
unsigned long *no_handles, efi_handle_t **buffer)
{
efi_status_t r;
unsigned long buffer_size = 0;
EFI_ENTRY("%d, %p, %p, %p, %p", search_type, protocol, search_key,
no_handles, buffer);
return EFI_EXIT(EFI_NOT_FOUND);
}
static struct efi_class_map efi_class_maps[] = {
{
.guid = &efi_guid_console_control,
.interface = &efi_console_control
},
};
if (!no_handles || !buffer) {
r = EFI_INVALID_PARAMETER;
goto out;
}
*no_handles = 0;
*buffer = NULL;
r = efi_locate_handle(search_type, protocol, search_key, &buffer_size,
*buffer);
if (r != EFI_BUFFER_TOO_SMALL)
goto out;
r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES, buffer_size,
(void **)buffer);
if (r != EFI_SUCCESS)
goto out;
r = efi_locate_handle(search_type, protocol, search_key, &buffer_size,
*buffer);
if (r == EFI_SUCCESS)
*no_handles = buffer_size / sizeof(void *);
out:
return EFI_EXIT(r);
}
static efi_status_t EFIAPI efi_locate_protocol(efi_guid_t *protocol,
void *registration,
void **protocol_interface)
{
struct list_head *lhandle;
int i;
EFI_ENTRY("%p, %p, %p", protocol, registration, protocol_interface);
for (i = 0; i < ARRAY_SIZE(efi_class_maps); i++) {
struct efi_class_map *curmap = &efi_class_maps[i];
if (!guidcmp(protocol, curmap->guid)) {
*protocol_interface = (void*)curmap->interface;
return EFI_EXIT(EFI_SUCCESS);
if (!protocol || !protocol_interface)
return EFI_EXIT(EFI_INVALID_PARAMETER);
list_for_each(lhandle, &efi_obj_list) {
struct efi_object *efiobj;
efiobj = list_entry(lhandle, struct efi_object, link);
for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
struct efi_handler *handler = &efiobj->protocols[i];
if (!handler->guid)
continue;
if (!guidcmp(handler->guid, protocol)) {
*protocol_interface =
handler->protocol_interface;
return EFI_EXIT(EFI_SUCCESS);
}
}
}
*protocol_interface = NULL;
return EFI_EXIT(EFI_NOT_FOUND);
}
@ -679,7 +1041,44 @@ static efi_status_t EFIAPI efi_install_multiple_protocol_interfaces(
void **handle, ...)
{
EFI_ENTRY("%p", handle);
return EFI_EXIT(EFI_OUT_OF_RESOURCES);
va_list argptr;
efi_guid_t *protocol;
void *protocol_interface;
efi_status_t r = EFI_SUCCESS;
int i = 0;
if (!handle)
return EFI_EXIT(EFI_INVALID_PARAMETER);
va_start(argptr, handle);
for (;;) {
protocol = va_arg(argptr, efi_guid_t*);
if (!protocol)
break;
protocol_interface = va_arg(argptr, void*);
r = efi_install_protocol_interface(handle, protocol,
EFI_NATIVE_INTERFACE,
protocol_interface);
if (r != EFI_SUCCESS)
break;
i++;
}
va_end(argptr);
if (r == EFI_SUCCESS)
return EFI_EXIT(r);
/* If an error occured undo all changes. */
va_start(argptr, handle);
for (; i; --i) {
protocol = va_arg(argptr, efi_guid_t*);
protocol_interface = va_arg(argptr, void*);
efi_uninstall_protocol_interface(handle, protocol,
protocol_interface);
}
va_end(argptr);
return EFI_EXIT(r);
}
static efi_status_t EFIAPI efi_uninstall_multiple_protocol_interfaces(
@ -718,11 +1117,38 @@ static efi_status_t EFIAPI efi_open_protocol(
{
struct list_head *lhandle;
int i;
efi_status_t r = EFI_UNSUPPORTED;
efi_status_t r = EFI_INVALID_PARAMETER;
EFI_ENTRY("%p, %p, %p, %p, %p, 0x%x", handle, protocol,
protocol_interface, agent_handle, controller_handle,
attributes);
if (!handle || !protocol ||
(!protocol_interface && attributes !=
EFI_OPEN_PROTOCOL_TEST_PROTOCOL)) {
goto out;
}
switch (attributes) {
case EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL:
case EFI_OPEN_PROTOCOL_GET_PROTOCOL:
case EFI_OPEN_PROTOCOL_TEST_PROTOCOL:
break;
case EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER:
if (controller_handle == handle)
goto out;
case EFI_OPEN_PROTOCOL_BY_DRIVER:
case EFI_OPEN_PROTOCOL_BY_DRIVER | EFI_OPEN_PROTOCOL_EXCLUSIVE:
if (controller_handle == NULL)
goto out;
case EFI_OPEN_PROTOCOL_EXCLUSIVE:
if (agent_handle == NULL)
goto out;
break;
default:
goto out;
}
list_for_each(lhandle, &efi_obj_list) {
struct efi_object *efiobj;
efiobj = list_entry(lhandle, struct efi_object, link);
@ -734,16 +1160,22 @@ static efi_status_t EFIAPI efi_open_protocol(
struct efi_handler *handler = &efiobj->protocols[i];
const efi_guid_t *hprotocol = handler->guid;
if (!hprotocol)
break;
continue;
if (!guidcmp(hprotocol, protocol)) {
r = handler->open(handle, protocol,
protocol_interface, agent_handle,
controller_handle, attributes);
if (attributes !=
EFI_OPEN_PROTOCOL_TEST_PROTOCOL) {
*protocol_interface =
handler->protocol_interface;
}
r = EFI_SUCCESS;
goto out;
}
}
goto unsupported;
}
unsupported:
r = EFI_UNSUPPORTED;
out:
return EFI_EXIT(r);
}
@ -767,19 +1199,19 @@ static const struct efi_boot_services efi_boot_services = {
.get_memory_map = efi_get_memory_map_ext,
.allocate_pool = efi_allocate_pool_ext,
.free_pool = efi_free_pool_ext,
.create_event = efi_create_event,
.set_timer = efi_set_timer,
.create_event = efi_create_event_ext,
.set_timer = efi_set_timer_ext,
.wait_for_event = efi_wait_for_event,
.signal_event = efi_signal_event,
.signal_event = efi_signal_event_ext,
.close_event = efi_close_event,
.check_event = efi_check_event,
.install_protocol_interface = efi_install_protocol_interface,
.install_protocol_interface = efi_install_protocol_interface_ext,
.reinstall_protocol_interface = efi_reinstall_protocol_interface,
.uninstall_protocol_interface = efi_uninstall_protocol_interface,
.uninstall_protocol_interface = efi_uninstall_protocol_interface_ext,
.handle_protocol = efi_handle_protocol,
.reserved = NULL,
.register_protocol_notify = efi_register_protocol_notify,
.locate_handle = efi_locate_handle,
.locate_handle = efi_locate_handle_ext,
.locate_device_path = efi_locate_device_path,
.install_configuration_table = efi_install_configuration_table_ext,
.load_image = efi_load_image,

55
lib/efi_loader/efi_console.c
View file

@ -421,8 +421,61 @@ static efi_status_t EFIAPI efi_cin_read_key_stroke(
return EFI_EXIT(EFI_SUCCESS);
}
const struct efi_simple_input_interface efi_con_in = {
struct efi_simple_input_interface efi_con_in = {
.reset = efi_cin_reset,
.read_key_stroke = efi_cin_read_key_stroke,
.wait_for_key = NULL,
};
static struct efi_event *console_timer_event;
static void EFIAPI efi_key_notify(struct efi_event *event, void *context)
{
}
static void EFIAPI efi_console_timer_notify(struct efi_event *event,
void *context)
{
EFI_ENTRY("%p, %p", event, context);
if (tstc())
efi_signal_event(efi_con_in.wait_for_key);
EFI_EXIT(EFI_SUCCESS);
}
static struct efi_object efi_console_control_obj =
EFI_PROTOCOL_OBJECT(efi_guid_console_control, &efi_console_control);
static struct efi_object efi_console_output_obj =
EFI_PROTOCOL_OBJECT(EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL_GUID, &efi_con_out);
static struct efi_object efi_console_input_obj =
EFI_PROTOCOL_OBJECT(EFI_SIMPLE_TEXT_INPUT_PROTOCOL_GUID, &efi_con_in);
/* This gets called from do_bootefi_exec(). */
int efi_console_register(void)
{
efi_status_t r;
/* Hook up to the device list */
list_add_tail(&efi_console_control_obj.link, &efi_obj_list);
list_add_tail(&efi_console_output_obj.link, &efi_obj_list);
list_add_tail(&efi_console_input_obj.link, &efi_obj_list);
r = efi_create_event(EVT_NOTIFY_WAIT, TPL_CALLBACK,
efi_key_notify, NULL, &efi_con_in.wait_for_key);
if (r != EFI_SUCCESS) {
printf("ERROR: Failed to register WaitForKey event\n");
return r;
}
r = efi_create_event(EVT_TIMER | EVT_NOTIFY_SIGNAL, TPL_CALLBACK,
efi_console_timer_notify, NULL,
&console_timer_event);
if (r != EFI_SUCCESS) {
printf("ERROR: Failed to register console event\n");
return r;
}
/* 5000 ns cycle is sufficient for 2 MBaud */
r = efi_set_timer(console_timer_event, EFI_TIMER_PERIODIC, 50);
if (r != EFI_SUCCESS)
printf("ERROR: Failed to set console timer\n");
return r;
}

130
lib/efi_loader/efi_device_path_to_text.c Normal file
View file

@ -0,0 +1,130 @@
/*
* EFI device path interface
*
* Copyright (c) 2017 Heinrich Schuchardt
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <efi_loader.h>
#define MAC_OUTPUT_LEN 22
#define UNKNOWN_OUTPUT_LEN 23
const efi_guid_t efi_guid_device_path_to_text_protocol =
EFI_DEVICE_PATH_TO_TEXT_PROTOCOL_GUID;
static uint16_t *efi_convert_device_node_to_text(
struct efi_device_path_protocol *device_node,
bool display_only,
bool allow_shortcuts)
{
unsigned long buffer_size;
efi_status_t r;
uint16_t *buffer = NULL;
int i;
switch (device_node->type) {
case DEVICE_PATH_TYPE_END:
return NULL;
case DEVICE_PATH_TYPE_MESSAGING_DEVICE:
switch (device_node->sub_type) {
case DEVICE_PATH_SUB_TYPE_MSG_MAC_ADDR: {
struct efi_device_path_mac_addr *dp =
(struct efi_device_path_mac_addr *)device_node;
if (dp->if_type != 0 && dp->if_type != 1)
break;
r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES,
2 * MAC_OUTPUT_LEN,
(void **)&buffer);
if (r != EFI_SUCCESS)
return NULL;
sprintf((char *)buffer,
"MAC(%02x%02x%02x%02x%02x%02x,0x%1x)",
dp->mac.addr[0], dp->mac.addr[1],
dp->mac.addr[2], dp->mac.addr[3],
dp->mac.addr[4], dp->mac.addr[5],
dp->if_type);
for (i = MAC_OUTPUT_LEN - 1; i >= 0; --i)
buffer[i] = ((uint8_t *)buffer)[i];
break;
}
}
break;
case DEVICE_PATH_TYPE_MEDIA_DEVICE:
switch (device_node->sub_type) {
case DEVICE_PATH_SUB_TYPE_FILE_PATH:
buffer_size = device_node->length - 4;
r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES,
buffer_size, (void **) &buffer);
if (r != EFI_SUCCESS)
return NULL;
memcpy(buffer, device_node->data, buffer_size);
break;
}
break;
}
/*
* For all node types that we do not yet support return
* 'UNKNOWN(type,subtype)'.
*/
if (!buffer) {
r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES,
2 * UNKNOWN_OUTPUT_LEN,
(void **)&buffer);
if (r != EFI_SUCCESS)
return NULL;
sprintf((char *)buffer,
"UNKNOWN(%04x,%04x)",
device_node->type,
device_node->sub_type);
for (i = UNKNOWN_OUTPUT_LEN - 1; i >= 0; --i)
buffer[i] = ((uint8_t *)buffer)[i];
}
return buffer;
}
static uint16_t EFIAPI *efi_convert_device_node_to_text_ext(
struct efi_device_path_protocol *device_node,
bool display_only,
bool allow_shortcuts)
{
uint16_t *buffer;
EFI_ENTRY("%p, %d, %d", device_node, display_only, allow_shortcuts);
buffer = efi_convert_device_node_to_text(device_node, display_only,
allow_shortcuts);
EFI_EXIT(EFI_SUCCESS);
return buffer;
}
static uint16_t EFIAPI *efi_convert_device_path_to_text(
struct efi_device_path_protocol *device_path,
bool display_only,
bool allow_shortcuts)
{
uint16_t *buffer;
EFI_ENTRY("%p, %d, %d", device_path, display_only, allow_shortcuts);
/*
* Our device paths are all of depth one. So its is sufficient to
* to convert the first node.
*/
buffer = efi_convert_device_node_to_text(device_path, display_only,
allow_shortcuts);
EFI_EXIT(EFI_SUCCESS);
return buffer;
}
const struct efi_device_path_to_text_protocol efi_device_path_to_text = {
.convert_device_node_to_text = efi_convert_device_node_to_text_ext,
.convert_device_path_to_text = efi_convert_device_path_to_text,
};

39
lib/efi_loader/efi_disk.c
View file

@ -35,29 +35,6 @@ struct efi_disk_obj {
const struct blk_desc *desc;
};
static efi_status_t EFIAPI efi_disk_open_block(void *handle,
efi_guid_t *protocol, void **protocol_interface,
void *agent_handle, void *controller_handle,
uint32_t attributes)
{
struct efi_disk_obj *diskobj = handle;
*protocol_interface = &diskobj->ops;
return EFI_SUCCESS;
}
static efi_status_t EFIAPI efi_disk_open_dp(void *handle, efi_guid_t *protocol,
void **protocol_interface, void *agent_handle,
void *controller_handle, uint32_t attributes)
{
struct efi_disk_obj *diskobj = handle;
*protocol_interface = diskobj->dp;
return EFI_SUCCESS;
}
static efi_status_t EFIAPI efi_disk_reset(struct efi_block_io *this,
char extended_verification)
{
@ -91,7 +68,7 @@ static efi_status_t EFIAPI efi_disk_rw_blocks(struct efi_block_io *this,
/* We only support full block access */
if (buffer_size & (blksz - 1))
return EFI_EXIT(EFI_DEVICE_ERROR);
return EFI_DEVICE_ERROR;
if (direction == EFI_DISK_READ)
n = blk_dread(desc, lba, blocks, buffer);
@ -104,9 +81,9 @@ static efi_status_t EFIAPI efi_disk_rw_blocks(struct efi_block_io *this,
debug("EFI: %s:%d n=%lx blocks=%x\n", __func__, __LINE__, n, blocks);
if (n != blocks)
return EFI_EXIT(EFI_DEVICE_ERROR);
return EFI_DEVICE_ERROR;
return EFI_EXIT(EFI_SUCCESS);
return EFI_SUCCESS;
}
static efi_status_t EFIAPI efi_disk_read_blocks(struct efi_block_io *this,
@ -210,10 +187,11 @@ static void efi_disk_add_dev(const char *name,
diskobj = calloc(1, objlen);
/* Fill in object data */
dp = (void *)&diskobj[1];
diskobj->parent.protocols[0].guid = &efi_block_io_guid;
diskobj->parent.protocols[0].open = efi_disk_open_block;
diskobj->parent.protocols[0].protocol_interface = &diskobj->ops;
diskobj->parent.protocols[1].guid = &efi_guid_device_path;
diskobj->parent.protocols[1].open = efi_disk_open_dp;
diskobj->parent.protocols[1].protocol_interface = dp;
diskobj->parent.handle = diskobj;
diskobj->ops = block_io_disk_template;
diskobj->ifname = if_typename;
@ -230,7 +208,6 @@ static void efi_disk_add_dev(const char *name,
diskobj->ops.media = &diskobj->media;
/* Fill in device path */
dp = (void*)&diskobj[1];
diskobj->dp = dp;
dp[0].dp.type = DEVICE_PATH_TYPE_MEDIA_DEVICE;
dp[0].dp.sub_type = DEVICE_PATH_SUB_TYPE_FILE_PATH;
@ -289,9 +266,9 @@ int efi_disk_register(void)
#ifdef CONFIG_BLK
struct udevice *dev;
for (uclass_first_device(UCLASS_BLK, &dev);
for (uclass_first_device_check(UCLASS_BLK, &dev);
dev;
uclass_next_device(&dev)) {
uclass_next_device_check(&dev)) {
struct blk_desc *desc = dev_get_uclass_platdata(dev);
const char *if_typename = dev->driver->name;

9
lib/efi_loader/efi_gop.c
View file

@ -28,6 +28,7 @@ struct efi_gop_obj {
struct efi_gop_mode mode;
/* Fields we only have acces to during init */
u32 bpix;
void *fb;
};
static efi_status_t EFIAPI gop_query_mode(struct efi_gop *this, u32 mode_number,
@ -71,7 +72,7 @@ static efi_status_t EFIAPI gop_blt(struct efi_gop *this, void *buffer,
if (operation != EFI_BLT_BUFFER_TO_VIDEO)
return EFI_EXIT(EFI_INVALID_PARAMETER);
fb = (void*)gd->fb_base;
fb = gopobj->fb;
line_len16 = gopobj->info.width * sizeof(u16);
line_len32 = gopobj->info.width * sizeof(u32);
@ -130,6 +131,7 @@ int efi_gop_register(void)
struct efi_gop_obj *gopobj;
u32 bpix, col, row;
u64 fb_base, fb_size;
void *fb;
#ifdef CONFIG_DM_VIDEO
struct udevice *vdev;
@ -144,6 +146,7 @@ int efi_gop_register(void)
row = video_get_ysize(vdev);
fb_base = (uintptr_t)priv->fb;
fb_size = priv->fb_size;
fb = priv->fb;
#else
int line_len;
@ -152,6 +155,7 @@ int efi_gop_register(void)
row = panel_info.vl_row;
fb_base = gd->fb_base;
fb_size = lcd_get_size(&line_len);
fb = gd->fb_base;
#endif
switch (bpix) {
@ -172,7 +176,7 @@ int efi_gop_register(void)
/* Fill in object data */
gopobj->parent.protocols[0].guid = &efi_gop_guid;
gopobj->parent.protocols[0].open = efi_return_handle;
gopobj->parent.protocols[0].protocol_interface = &gopobj->ops;
gopobj->parent.handle = &gopobj->ops;
gopobj->ops.query_mode = gop_query_mode;
gopobj->ops.set_mode = gop_set_mode;
@ -200,6 +204,7 @@ int efi_gop_register(void)
gopobj->info.pixels_per_scanline = col;
gopobj->bpix = bpix;
gopobj->fb = fb;
/* Hook up to the device list */
list_add_tail(&gopobj->parent.link, &efi_obj_list);

8
lib/efi_loader/efi_image_loader.c
View file

@ -18,14 +18,6 @@ DECLARE_GLOBAL_DATA_PTR;
const efi_guid_t efi_guid_device_path = DEVICE_PATH_GUID;
const efi_guid_t efi_guid_loaded_image = LOADED_IMAGE_GUID;
efi_status_t EFIAPI efi_return_handle(void *handle, efi_guid_t *protocol,
void **protocol_interface, void *agent_handle,
void *controller_handle, uint32_t attributes)
{
*protocol_interface = handle;
return EFI_SUCCESS;
}
static efi_status_t efi_loader_relocate(const IMAGE_BASE_RELOCATION *rel,
unsigned long rel_size, void *efi_reloc)
{

11
lib/efi_loader/efi_memory.c
View file

@ -379,6 +379,9 @@ efi_status_t efi_free_pool(void *buffer)
efi_status_t r;
struct efi_pool_allocation *alloc;
if (buffer == NULL)
return EFI_INVALID_PARAMETER;
alloc = container_of(buffer, struct efi_pool_allocation, data);
/* Sanity check, was the supplied address returned by allocate_pool */
assert(((uintptr_t)alloc & EFI_PAGE_MASK) == 0);
@ -406,15 +409,15 @@ efi_status_t efi_get_memory_map(unsigned long *memory_map_size,
*memory_map_size = map_size;
if (provided_map_size < map_size)
return EFI_BUFFER_TOO_SMALL;
if (descriptor_size)
*descriptor_size = sizeof(struct efi_mem_desc);
if (descriptor_version)
*descriptor_version = EFI_MEMORY_DESCRIPTOR_VERSION;
if (provided_map_size < map_size)
return EFI_BUFFER_TOO_SMALL;
/* Copy list into array */
if (memory_map) {
/* Return the list in ascending order */
@ -428,6 +431,8 @@ efi_status_t efi_get_memory_map(unsigned long *memory_map_size,
}
}
*map_key = 0;
return EFI_SUCCESS;
}

30
lib/efi_loader/efi_net.c
View file

@ -199,30 +199,6 @@ static efi_status_t EFIAPI efi_net_receive(struct efi_simple_network *this,
return EFI_EXIT(EFI_SUCCESS);
}
static efi_status_t EFIAPI efi_net_open_dp(void *handle, efi_guid_t *protocol,
void **protocol_interface, void *agent_handle,
void *controller_handle, uint32_t attributes)
{
struct efi_simple_network *net = handle;
struct efi_net_obj *netobj = container_of(net, struct efi_net_obj, net);
*protocol_interface = &netobj->dp_mac;
return EFI_SUCCESS;
}
static efi_status_t EFIAPI efi_net_open_pxe(void *handle, efi_guid_t *protocol,
void **protocol_interface, void *agent_handle,
void *controller_handle, uint32_t attributes)
{
struct efi_simple_network *net = handle;
struct efi_net_obj *netobj = container_of(net, struct efi_net_obj, net);
*protocol_interface = &netobj->pxe;
return EFI_SUCCESS;
}
void efi_net_set_dhcp_ack(void *pkt, int len)
{
int maxsize = sizeof(*dhcp_ack);
@ -258,11 +234,11 @@ int efi_net_register(void **handle)
/* Fill in object data */
netobj->parent.protocols[0].guid = &efi_net_guid;
netobj->parent.protocols[0].open = efi_return_handle;
netobj->parent.protocols[0].protocol_interface = &netobj->net;
netobj->parent.protocols[1].guid = &efi_guid_device_path;
netobj->parent.protocols[1].open = efi_net_open_dp;
netobj->parent.protocols[1].protocol_interface = &netobj->dp_mac;
netobj->parent.protocols[2].guid = &efi_pxe_guid;
netobj->parent.protocols[2].open = efi_net_open_pxe;
netobj->parent.protocols[2].protocol_interface = &netobj->pxe;
netobj->parent.handle = &netobj->net;
netobj->net.start = efi_net_start;
netobj->net.stop = efi_net_stop;