diff options
Diffstat (limited to 'lib/efi_loader/efi_net.c')
| -rw-r--r-- | lib/efi_loader/efi_net.c | 68 |
1 files changed, 52 insertions, 16 deletions
diff --git a/lib/efi_loader/efi_net.c b/lib/efi_loader/efi_net.c index 8c5d5b492c..9afe76cdb3 100644 --- a/lib/efi_loader/efi_net.c +++ b/lib/efi_loader/efi_net.c @@ -54,14 +54,46 @@ static efi_status_t EFIAPI efi_net_stop(struct efi_simple_network *this) return EFI_EXIT(EFI_SUCCESS); } +/* + * Initialize network adapter and allocate transmit and receive buffers. + * + * This function implements the Initialize service of the + * EFI_SIMPLE_NETWORK_PROTOCOL. See the Unified Extensible Firmware Interface + * (UEFI) specification for details. + * + * @this: pointer to the protocol instance + * @extra_rx: extra receive buffer to be allocated + * @extra_tx: extra transmit buffer to be allocated + * @return: status code + */ static efi_status_t EFIAPI efi_net_initialize(struct efi_simple_network *this, ulong extra_rx, ulong extra_tx) { + int ret; + efi_status_t r = EFI_SUCCESS; + EFI_ENTRY("%p, %lx, %lx", this, extra_rx, extra_tx); - eth_init(); + if (!this) { + r = EFI_INVALID_PARAMETER; + goto error; + } - return EFI_EXIT(EFI_SUCCESS); + /* Setup packet buffers */ + net_init(); + /* Disable hardware and put it into the reset state */ + eth_halt(); + /* Set current device according to environment variables */ + eth_set_current(); + /* Get hardware ready for send and receive operations */ + ret = eth_init(); + if (ret < 0) { + eth_halt(); + r = EFI_DEVICE_ERROR; + } + +error: + return EFI_EXIT(r); } static efi_status_t EFIAPI efi_net_reset(struct efi_simple_network *this, @@ -280,20 +312,22 @@ static void EFIAPI efi_network_timer_notify(struct efi_event *event, } /* This gets called from do_bootefi_exec(). */ -int efi_net_register(void) +efi_status_t efi_net_register(void) { struct efi_net_obj *netobj; efi_status_t r; if (!eth_get_dev()) { /* No eth device active, don't expose any */ - return 0; + return EFI_SUCCESS; } /* We only expose the "active" eth device, so one is enough */ netobj = calloc(1, sizeof(*netobj)); - if (!netobj) - goto out_of_memory; + if (!netobj) { + printf("ERROR: Out of memory\n"); + return EFI_OUT_OF_RESOURCES; + } /* Hook net up to the device list */ efi_add_handle(&netobj->parent); @@ -302,15 +336,15 @@ int efi_net_register(void) r = efi_add_protocol(netobj->parent.handle, &efi_net_guid, &netobj->net); if (r != EFI_SUCCESS) - goto out_of_memory; + goto failure_to_add_protocol; r = efi_add_protocol(netobj->parent.handle, &efi_guid_device_path, efi_dp_from_eth()); if (r != EFI_SUCCESS) - goto out_of_memory; + goto failure_to_add_protocol; r = efi_add_protocol(netobj->parent.handle, &efi_pxe_guid, &netobj->pxe); if (r != EFI_SUCCESS) - goto out_of_memory; + goto failure_to_add_protocol; netobj->net.revision = EFI_SIMPLE_NETWORK_PROTOCOL_REVISION; netobj->net.start = efi_net_start; netobj->net.stop = efi_net_stop; @@ -339,7 +373,7 @@ int efi_net_register(void) * Create WaitForPacket event. */ r = efi_create_event(EVT_NOTIFY_WAIT, TPL_CALLBACK, - efi_network_timer_notify, NULL, + efi_network_timer_notify, NULL, NULL, &wait_for_packet); if (r != EFI_SUCCESS) { printf("ERROR: Failed to register network event\n"); @@ -351,9 +385,11 @@ int efi_net_register(void) * * The notification function is used to check if a new network packet * has been received. + * + * iPXE is running at TPL_CALLBACK most of the time. Use a higher TPL. */ - r = efi_create_event(EVT_TIMER | EVT_NOTIFY_SIGNAL, TPL_CALLBACK, - efi_network_timer_notify, NULL, + r = efi_create_event(EVT_TIMER | EVT_NOTIFY_SIGNAL, TPL_NOTIFY, + efi_network_timer_notify, NULL, NULL, &network_timer_event); if (r != EFI_SUCCESS) { printf("ERROR: Failed to register network event\n"); @@ -366,8 +402,8 @@ int efi_net_register(void) return r; } - return 0; -out_of_memory: - printf("ERROR: Out of memory\n"); - return 1; + return EFI_SUCCESS; +failure_to_add_protocol: + printf("ERROR: Failure to add protocol\n"); + return r; } |