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efi_loader: expose symbols to be used by the EFI network stack

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The following symbols are exposed:
	- efi_reinstall_protocol_interface
		This is done so that the device path protocol interface
		of the network device can be changed internally by u-boot
		when a new bootfile gets downloaded.
	- eth_set_dev
		To support multiple network udevices
	- efi_close_event
		This comes in preparation to support unregistering
		an EFI network device from the EFI network stack when
		the underlying U-boot device gets removed
	- efi_[dis]connect_controller
		The EFI network driver uses ConnectController to add a
		NIC to the EFI network stack.
	- efi_uninstall_protocol_interface
		connect_controler for the efi network driver can install
		protocols, which need to be uninstalled in disconnect_controller
	- EFI_SIMPLE_NETWORK_PROTOCOL_GUID

Signed-off-by: Adriano Cordova <adriano.cordova@canonical.com>
This commit is contained in:
Adriano Cordova 2025-03-03 11:13:11 -03:00 • committed by Heinrich Schuchardt
parent 908033ea22
commit 74829b4d93
5 changed files with 29 additions and 13 deletions
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17
include/efi_loader.h
View file

@ -321,6 +321,8 @@ extern const efi_guid_t efi_guid_host_dev;
#endif
/* GUID of the EFI_BLOCK_IO_PROTOCOL */
extern const efi_guid_t efi_block_io_guid;
/* GUID of the EFI_SIMPLE_NETWORK_PROTOCOL */
extern const efi_guid_t efi_net_guid;
extern const efi_guid_t efi_global_variable_guid;
extern const efi_guid_t efi_guid_console_control;
extern const efi_guid_t efi_guid_device_path;
@ -733,6 +735,10 @@ efi_status_t efi_search_protocol(const efi_handle_t handle,
efi_status_t efi_add_protocol(const efi_handle_t handle,
const efi_guid_t *protocol,
void *protocol_interface);
/* Uninstall new protocol on a handle */
efi_status_t efi_uninstall_protocol
(efi_handle_t handle, const efi_guid_t *protocol,
void *protocol_interface, bool preserve);
/* Reinstall a protocol on a handle */
efi_status_t EFIAPI efi_reinstall_protocol_interface(
efi_handle_t handle,
@ -748,6 +754,15 @@ efi_status_t EFIAPI
efi_install_multiple_protocol_interfaces(efi_handle_t *handle, ...);
efi_status_t EFIAPI
efi_uninstall_multiple_protocol_interfaces(efi_handle_t handle, ...);
/* Connect and disconnect controller */
efi_status_t EFIAPI efi_connect_controller(efi_handle_t controller_handle,
efi_handle_t *driver_image_handle,
struct efi_device_path *remain_device_path,
bool recursive);
efi_status_t EFIAPI efi_disconnect_controller(
efi_handle_t controller_handle,
efi_handle_t driver_image_handle,
efi_handle_t child_handle);
/* Get handles that support a given protocol */
efi_status_t EFIAPI efi_locate_handle_buffer(
enum efi_locate_search_type search_type,
@ -768,6 +783,8 @@ efi_status_t efi_create_event(uint32_t type, efi_uintn_t notify_tpl,
void *context),
void *notify_context, const efi_guid_t *group,
struct efi_event **event);
/* Call this to close an event */
efi_status_t EFIAPI efi_close_event(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);

1
include/net-common.h
View file

@ -291,6 +291,7 @@ struct eth_ops {
#define eth_get_ops(dev) ((struct eth_ops *)(dev)->driver->ops)
struct udevice *eth_get_dev(void); /* get the current device */
void eth_set_dev(struct udevice *dev); /* set a device */
unsigned char *eth_get_ethaddr(void); /* get the current device MAC */
int eth_rx(void); /* Check for received packets */
void eth_halt(void); /* stop SCC */

21
lib/efi_loader/efi_boottime.c
View file

@ -60,9 +60,9 @@ static efi_handle_t current_image;
static volatile gd_t *efi_gd, *app_gd;
#endif
static efi_status_t efi_uninstall_protocol
(efi_handle_t handle, const efi_guid_t *protocol,
void *protocol_interface, bool preserve);
efi_status_t efi_uninstall_protocol
(efi_handle_t handle, const efi_guid_t *protocol,
void *protocol_interface, bool preserve);
/* 1 if inside U-Boot code, 0 if inside EFI payload code */
static int entry_count = 1;
@ -100,12 +100,11 @@ const efi_guid_t efi_guid_load_file2_protocol = EFI_LOAD_FILE2_PROTOCOL_GUID;
/* GUID of the SMBIOS table */
const efi_guid_t smbios_guid = SMBIOS_TABLE_GUID;
static efi_status_t EFIAPI efi_disconnect_controller(
efi_status_t EFIAPI efi_disconnect_controller(
efi_handle_t controller_handle,
efi_handle_t driver_image_handle,
efi_handle_t child_handle);
static
efi_status_t EFIAPI efi_connect_controller(efi_handle_t controller_handle,
efi_handle_t *driver_image_handle,
struct efi_device_path *remain_device_path,
@ -1039,7 +1038,7 @@ static efi_status_t EFIAPI efi_signal_event_ext(struct efi_event *event)
*
* Return: status code
*/
static efi_status_t EFIAPI efi_close_event(struct efi_event *event)
efi_status_t EFIAPI efi_close_event(struct efi_event *event)
{
struct efi_register_notify_event *item, *next;
@ -1380,9 +1379,9 @@ static efi_status_t efi_disconnect_all_drivers
*
* Return: status code
*/
static efi_status_t efi_uninstall_protocol
(efi_handle_t handle, const efi_guid_t *protocol,
void *protocol_interface, bool preserve)
efi_status_t efi_uninstall_protocol
(efi_handle_t handle, const efi_guid_t *protocol,
void *protocol_interface, bool preserve)
{
struct efi_handler *handler;
struct efi_open_protocol_info_item *item;
@ -3665,7 +3664,7 @@ static efi_status_t efi_connect_single_controller(
*
* Return: status code
*/
static efi_status_t EFIAPI efi_connect_controller(
efi_status_t EFIAPI efi_connect_controller(
efi_handle_t controller_handle,
efi_handle_t *driver_image_handle,
struct efi_device_path *remain_device_path,
@ -3844,7 +3843,7 @@ static efi_status_t efi_get_child_controllers(
*
* Return: status code
*/
static efi_status_t EFIAPI efi_disconnect_controller(
efi_status_t EFIAPI efi_disconnect_controller(
efi_handle_t controller_handle,
efi_handle_t driver_image_handle,
efi_handle_t child_handle)

2
lib/efi_loader/efi_net.c
View file

@ -24,7 +24,7 @@
#include <vsprintf.h>
#include <net.h>
static const efi_guid_t efi_net_guid = EFI_SIMPLE_NETWORK_PROTOCOL_GUID;
const efi_guid_t efi_net_guid = EFI_SIMPLE_NETWORK_PROTOCOL_GUID;
static const efi_guid_t efi_pxe_base_code_protocol_guid =
EFI_PXE_BASE_CODE_PROTOCOL_GUID;
static struct efi_pxe_packet *dhcp_ack;

1
lib/efi_selftest/efi_selftest_snp.c
View file

@ -67,7 +67,6 @@ struct dhcp {
static struct efi_boot_services *boottime;
static struct efi_simple_network *net;
static struct efi_event *timer;
static const efi_guid_t efi_net_guid = EFI_SIMPLE_NETWORK_PROTOCOL_GUID;
/* IP packet ID */
static unsigned int net_ip_id;