[U-Boot] [PATCH v3 1/7] efi_loader: Add network access support
Simon Glass
sjg at chromium.org
Sat May 14 21:49:24 CEST 2016
Hi Alexander,
On 10 May 2016 at 15:25, Alexander Graf <agraf at suse.de> wrote:
> We can now successfully boot EFI applications from disk, but users
> may want to also run them from a PXE setup.
>
> This patch implements rudimentary network support, allowing a payload
> to send and receive network packets.
>
> With this patch, I was able to successfully run grub2 with network
> access inside of QEMU's -M xlnx-ep108 and on a zcu102 system.
>
> Signed-off-by: Alexander Graf <agraf at suse.de>
>
> ---
>
> v2 -> v3:
>
> - Align initialization sequence with net code
> - Set device to initialized after init call
> - Align tx buffers to DMA alignment (rx gets memcpy'd)
> - Add comment about eth_rx()
> ---
> cmd/bootefi.c | 7 ++
> include/efi_api.h | 119 ++++++++++++++++++
> include/efi_loader.h | 7 ++
> include/net.h | 2 +-
> lib/efi_loader/Makefile | 1 +
> lib/efi_loader/efi_net.c | 314 +++++++++++++++++++++++++++++++++++++++++++++++
> net/bootp.c | 2 +
> net/net.c | 4 +-
> net/tftp.c | 2 +
> 9 files changed, 455 insertions(+), 3 deletions(-)
> create mode 100644 lib/efi_loader/efi_net.c
>
> diff --git a/cmd/bootefi.c b/cmd/bootefi.c
> index 7f552fc..d3a2331 100644
> --- a/cmd/bootefi.c
> +++ b/cmd/bootefi.c
> @@ -197,6 +197,13 @@ static unsigned long do_bootefi_exec(void *efi, void *fdt)
> #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;
> +#endif
>
> /* Call our payload! */
> #ifdef DEBUG_EFI
> diff --git a/include/efi_api.h b/include/efi_api.h
> index 51d7586..20035d7 100644
> --- a/include/efi_api.h
> +++ b/include/efi_api.h
> @@ -412,4 +412,123 @@ struct efi_gop
> struct efi_gop_mode *mode;
> };
>
> +#define EFI_SIMPLE_NETWORK_GUID \
> + EFI_GUID(0xa19832b9, 0xac25, 0x11d3, \
> + 0x9a, 0x2d, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
> +
> +struct efi_mac_address {
> + char mac_addr[32];
> +};
> +
> +struct efi_ip_address {
> + u8 ip_addr[16];
> +};
> +
> +enum efi_simple_network_state {
> + EFI_NETWORK_STOPPED,
> + EFI_NETWORK_STARTED,
> + EFI_NETWORK_INITIALIZED,
> +};
> +
> +struct efi_simple_network_mode {
> + enum efi_simple_network_state state;
> + u32 hwaddr_size;
> + u32 media_header_size;
> + u32 max_packet_size;
> + u32 nvram_size;
> + u32 nvram_access_size;
> + u32 receive_filter_mask;
> + u32 receive_filter_setting;
> + u32 max_mcast_filter_count;
> + u32 mcast_filter_count;
> + struct efi_mac_address mcast_filter[16];
> + struct efi_mac_address current_address;
> + struct efi_mac_address broadcast_address;
> + struct efi_mac_address permanent_address;
> + u8 if_type;
> + u8 mac_changeable;
> + u8 multitx_supported;
> + u8 media_present_supported;
> + u8 media_present;
> +};
> +
> +#define EFI_SIMPLE_NETWORK_RECEIVE_UNICAST 0x01,
> +#define EFI_SIMPLE_NETWORK_RECEIVE_MULTICAST 0x02,
> +#define EFI_SIMPLE_NETWORK_RECEIVE_BROADCAST 0x04,
> +#define EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS 0x08,
> +#define EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS_MULTICAST 0x10,
> +
> +struct efi_simple_network
> +{
> + u64 revision;
> + efi_status_t (EFIAPI *start)(struct efi_simple_network *this);
> + efi_status_t (EFIAPI *stop)(struct efi_simple_network *this);
> + efi_status_t (EFIAPI *initialize)(struct efi_simple_network *this,
> + ulong extra_rx, ulong extra_tx);
> + efi_status_t (EFIAPI *reset)(struct efi_simple_network *this,
> + int extended_verification);
> + efi_status_t (EFIAPI *shutdown)(struct efi_simple_network *this);
> + efi_status_t (EFIAPI *receive_filters)(struct efi_simple_network *this,
> + u32 enable, u32 disable, int reset_mcast_filter,
> + ulong mcast_filter_count,
> + struct efi_mac_address *mcast_filter);
> + efi_status_t (EFIAPI *station_address)(struct efi_simple_network *this,
> + int reset, struct efi_mac_address *new_mac);
> + efi_status_t (EFIAPI *statistics)(struct efi_simple_network *this,
> + int reset, ulong *stat_size, void *stat_table);
> + efi_status_t (EFIAPI *mcastiptomac)(struct efi_simple_network *this,
> + int ipv6, struct efi_ip_address *ip,
> + struct efi_mac_address *mac);
> + efi_status_t (EFIAPI *nvdata)(struct efi_simple_network *this,
> + int read_write, ulong offset, ulong buffer_size,
> + char *buffer);
> + efi_status_t (EFIAPI *get_status)(struct efi_simple_network *this,
> + u32 *int_status, void **txbuf);
> + efi_status_t (EFIAPI *transmit)(struct efi_simple_network *this,
> + ulong header_size, ulong buffer_size, void *buffer,
> + struct efi_mac_address *src_addr,
> + struct efi_mac_address *dest_addr, u16 *protocol);
> + efi_status_t (EFIAPI *receive)(struct efi_simple_network *this,
> + ulong *header_size, ulong *buffer_size, void *buffer,
> + struct efi_mac_address *src_addr,
> + struct efi_mac_address *dest_addr, u16 *protocol);
> + void (EFIAPI *waitforpacket)(void);
> + struct efi_simple_network_mode *mode;
> +};
> +
> +#define EFI_PXE_GUID \
> + EFI_GUID(0x03c4e603, 0xac28, 0x11d3, \
> + 0x9a, 0x2d, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
> +
> +struct efi_pxe_packet {
> + u8 packet[1472];
> +};
> +
> +struct efi_pxe_mode
> +{
> + u8 unused[52];
> + struct efi_pxe_packet dhcp_discover;
> + struct efi_pxe_packet dhcp_ack;
> + struct efi_pxe_packet proxy_offer;
> + struct efi_pxe_packet pxe_discover;
> + struct efi_pxe_packet pxe_reply;
> +};
> +
> +struct efi_pxe {
> + u64 rev;
> + void (EFIAPI *start)(void);
> + void (EFIAPI *stop)(void);
> + void (EFIAPI *dhcp)(void);
> + void (EFIAPI *discover)(void);
> + void (EFIAPI *mftp)(void);
> + void (EFIAPI *udpwrite)(void);
> + void (EFIAPI *udpread)(void);
> + void (EFIAPI *setipfilter)(void);
> + void (EFIAPI *arp)(void);
> + void (EFIAPI *setparams)(void);
> + void (EFIAPI *setstationip)(void);
> + void (EFIAPI *setpackets)(void);
> + struct efi_pxe_mode *mode;
> +};
> +
> #endif
> diff --git a/include/efi_loader.h b/include/efi_loader.h
> index 88b8149..8005454 100644
> --- a/include/efi_loader.h
> +++ b/include/efi_loader.h
> @@ -91,6 +91,12 @@ extern struct list_head efi_obj_list;
> int efi_disk_register(void);
> /* Called by bootefi to make GOP (graphical) interface available */
> int efi_gop_register(void);
> +/* Called by bootefi to make the network interface available */
> +int efi_net_register(void **handle);
> +
> +/* 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
> @@ -157,5 +163,6 @@ static inline void ascii2unicode(u16 *unicode, char *ascii)
> static inline void efi_restore_gd(void) { }
> static inline void efi_set_bootdev(const char *dev, const char *devnr,
> const char *path) { }
> +static inline void efi_net_set_dhcp_ack(void *pkt, int len) { }
>
> #endif
> diff --git a/include/net.h b/include/net.h
> index 05800c4..5ee5929 100644
> --- a/include/net.h
> +++ b/include/net.h
> @@ -269,7 +269,7 @@ int eth_getenv_enetaddr_by_index(const char *base_name, int index,
> int eth_init(void); /* Initialize the device */
> int eth_send(void *packet, int length); /* Send a packet */
>
> -#ifdef CONFIG_API
> +#if defined(CONFIG_API) || defined(CONFIG_EFI_LOADER)
> int eth_receive(void *packet, int length); /* Receive a packet*/
> extern void (*push_packet)(void *packet, int length);
> #endif
> diff --git a/lib/efi_loader/Makefile b/lib/efi_loader/Makefile
> index 83e31f6..2a3849e 100644
> --- a/lib/efi_loader/Makefile
> +++ b/lib/efi_loader/Makefile
> @@ -11,3 +11,4 @@ obj-y += efi_image_loader.o efi_boottime.o efi_runtime.o efi_console.o
> obj-y += efi_memory.o
> obj-$(CONFIG_LCD) += efi_gop.o
> obj-$(CONFIG_PARTITIONS) += efi_disk.o
> +obj-$(CONFIG_NET) += efi_net.o
> diff --git a/lib/efi_loader/efi_net.c b/lib/efi_loader/efi_net.c
> new file mode 100644
> index 0000000..a95ff3c
> --- /dev/null
> +++ b/lib/efi_loader/efi_net.c
> @@ -0,0 +1,314 @@
> +/*
> + * EFI application network access support
> + *
> + * Copyright (c) 2016 Alexander Graf
> + *
> + * SPDX-License-Identifier: GPL-2.0+
> + */
> +
> +#include <common.h>
> +#include <efi_loader.h>
> +#include <inttypes.h>
> +#include <lcd.h>
> +#include <malloc.h>
> +
> +DECLARE_GLOBAL_DATA_PTR;
> +
> +static const efi_guid_t efi_net_guid = EFI_SIMPLE_NETWORK_GUID;
> +static const efi_guid_t efi_pxe_guid = EFI_PXE_GUID;
> +static struct efi_pxe_packet *dhcp_ack;
> +static bool new_rx_packet;
> +static void *new_tx_packet;
> +
> +struct efi_net_obj {
> + /* Generic EFI object parent class data */
> + struct efi_object parent;
> + /* EFI Interface callback struct for network */
> + struct efi_simple_network net;
> + struct efi_simple_network_mode net_mode;
> + /* Device path to the network adapter */
> + struct efi_device_path_file_path dp[2];
> + /* PXE struct to transmit dhcp data */
> + struct efi_pxe pxe;
> + struct efi_pxe_mode pxe_mode;
> +};
> +
> +static efi_status_t EFIAPI efi_net_start(struct efi_simple_network *this)
> +{
> + EFI_ENTRY("%p", this);
> +
> + return EFI_EXIT(EFI_SUCCESS);
> +}
> +
> +static efi_status_t EFIAPI efi_net_stop(struct efi_simple_network *this)
> +{
> + EFI_ENTRY("%p", this);
> +
> + return EFI_EXIT(EFI_SUCCESS);
> +}
> +
> +static efi_status_t EFIAPI efi_net_initialize(struct efi_simple_network *this,
> + ulong extra_rx, ulong extra_tx)
> +{
> + struct efi_net_obj *netobj = container_of(this, struct efi_net_obj, net);
> + int ret;
> + EFI_ENTRY("%p, %lx, %lx", this, extra_rx, extra_tx);
> +
> + eth_halt();
> + eth_set_current();
> + ret = eth_init();
> + if (ret < 0) {
> + eth_halt();
> + return EFI_EXIT(EFI_DEVICE_ERROR);
> + }
> +
> + netobj->net_mode.state = EFI_NETWORK_INITIALIZED;
> +
> + return EFI_EXIT(EFI_SUCCESS);
> +}
> +
> +static efi_status_t EFIAPI efi_net_reset(struct efi_simple_network *this,
> + int extended_verification)
> +{
> + EFI_ENTRY("%p, %x", this, extended_verification);
> +
> + return EFI_EXIT(EFI_SUCCESS);
> +}
> +
> +static efi_status_t EFIAPI efi_net_shutdown(struct efi_simple_network *this)
> +{
> + EFI_ENTRY("%p", this);
> +
> + return EFI_EXIT(EFI_SUCCESS);
> +}
> +
> +static efi_status_t EFIAPI efi_net_receive_filters(
> + struct efi_simple_network *this, u32 enable, u32 disable,
> + int reset_mcast_filter, ulong mcast_filter_count,
> + struct efi_mac_address *mcast_filter)
> +{
> + EFI_ENTRY("%p, %x, %x, %x, %lx, %p", this, enable, disable,
> + reset_mcast_filter, mcast_filter_count, mcast_filter);
> +
> + /* XXX Do we care? */
> +
> + return EFI_EXIT(EFI_SUCCESS);
> +}
> +
> +static efi_status_t EFIAPI efi_net_station_address(
> + struct efi_simple_network *this, int reset,
> + struct efi_mac_address *new_mac)
> +{
> + EFI_ENTRY("%p, %x, %p", this, reset, new_mac);
> +
> + return EFI_EXIT(EFI_INVALID_PARAMETER);
> +}
> +
> +static efi_status_t EFIAPI efi_net_statistics(struct efi_simple_network *this,
> + int reset, ulong *stat_size,
> + void *stat_table)
> +{
> + EFI_ENTRY("%p, %x, %p, %p", this, reset, stat_size, stat_table);
> +
> + return EFI_EXIT(EFI_INVALID_PARAMETER);
> +}
> +
> +static efi_status_t EFIAPI efi_net_mcastiptomac(struct efi_simple_network *this,
> + int ipv6,
> + struct efi_ip_address *ip,
> + struct efi_mac_address *mac)
> +{
> + EFI_ENTRY("%p, %x, %p, %p", this, ipv6, ip, mac);
> +
> + return EFI_EXIT(EFI_INVALID_PARAMETER);
> +}
> +
> +static efi_status_t EFIAPI efi_net_nvdata(struct efi_simple_network *this,
> + int read_write, ulong offset,
> + ulong buffer_size, char *buffer)
> +{
> + EFI_ENTRY("%p, %x, %lx, %lx, %p", this, read_write, offset, buffer_size,
> + buffer);
> +
> + return EFI_EXIT(EFI_INVALID_PARAMETER);
> +}
> +
> +static efi_status_t EFIAPI efi_net_get_status(struct efi_simple_network *this,
> + u32 *int_status, void **txbuf)
> +{
> + EFI_ENTRY("%p, %p, %p", this, int_status, txbuf);
> +
> + /* We send packets synchronously, so nothing is outstanding */
> + if (int_status)
> + *int_status = 0;
> + if (txbuf)
> + *txbuf = new_tx_packet;
> +
> + new_tx_packet = NULL;
> +
> + return EFI_EXIT(EFI_SUCCESS);
> +}
> +
> +static efi_status_t EFIAPI efi_net_transmit(struct efi_simple_network *this,
> + ulong header_size, ulong buffer_size, void *buffer,
> + struct efi_mac_address *src_addr,
> + struct efi_mac_address *dest_addr, u16 *protocol)
> +{
> + EFI_ENTRY("%p, %lx, %lx, %p, %p, %p, %p", this, header_size,
> + buffer_size, buffer, src_addr, dest_addr, protocol);
> +
> + if (header_size) {
> + /* We would need to create the header if header_size != 0 */
> + return EFI_EXIT(EFI_INVALID_PARAMETER);
> + }
> +
> + /*
> + * Some drivers need to have DMA aligned buffers, so if
> + * it's misaligned, let's use our own.
> + */
> + if ((ulong)buffer & (ARCH_DMA_MINALIGN - 1)) {
> + void *packet = memalign(ARCH_DMA_MINALIGN, buffer_size);
> + memcpy(packet, buffer, buffer_size);
> + net_send_packet(packet, buffer_size);
> + free(packet);
> + } else {
> + net_send_packet(buffer, buffer_size);
> + }
> +
> + new_tx_packet = buffer;
> +
> + return EFI_EXIT(EFI_SUCCESS);
> +}
> +
> +static void efi_net_push(void *pkt, int len)
> +{
> + new_rx_packet = true;
> +}
> +
> +static efi_status_t EFIAPI efi_net_receive(struct efi_simple_network *this,
> + ulong *header_size, ulong *buffer_size, void *buffer,
> + struct efi_mac_address *src_addr,
> + struct efi_mac_address *dest_addr, u16 *protocol)
> +{
> + EFI_ENTRY("%p, %p, %p, %p, %p, %p, %p", this, header_size,
> + buffer_size, buffer, src_addr, dest_addr, protocol);
> +
> + push_packet = efi_net_push;
> + /* XXX With device model this reads multiple packets, we only want 1 */
> + eth_rx();
> + push_packet = NULL;
> +
> + if (!new_rx_packet)
> + return EFI_EXIT(EFI_NOT_READY);
> +
> + if (*buffer_size < net_rx_packet_len) {
> + /* Packet doesn't fit, try again with bigger buf */
> + *buffer_size = net_rx_packet_len;
> + return EFI_EXIT(EFI_BUFFER_TOO_SMALL);
> + }
> +
> + memcpy(buffer, net_rx_packet, net_rx_packet_len);
> + *buffer_size = net_rx_packet_len;
> + new_rx_packet = false;
> +
> + return EFI_EXIT(EFI_SUCCESS);
> +}
> +
> +static efi_status_t 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;
> +
> + return EFI_SUCCESS;
> +}
> +
> +static efi_status_t 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);
> +
> + if (!dhcp_ack)
> + dhcp_ack = malloc(maxsize);
> +
> + memcpy(dhcp_ack, pkt, min(len, maxsize));
> +}
> +
> +/* This gets called from do_bootefi_exec(). */
> +int efi_net_register(void **handle)
> +{
> + struct efi_net_obj *netobj;
> + struct efi_device_path_file_path dp_net = {
> + .dp.type = DEVICE_PATH_TYPE_MEDIA_DEVICE,
> + .dp.sub_type = DEVICE_PATH_SUB_TYPE_FILE_PATH,
> + .dp.length = sizeof(dp_net),
> + .str = { 'N', 'e', 't' },
> + };
> + struct efi_device_path_file_path dp_end = {
> + .dp.type = DEVICE_PATH_TYPE_END,
> + .dp.sub_type = DEVICE_PATH_SUB_TYPE_END,
> + .dp.length = sizeof(dp_end),
> + };
> +
> + if (!eth_get_dev()) {
> + /* No eth device active, don't expose any */
> + return 0;
> + }
> +
> + /* We only expose the "active" eth device, so one is enough */
> + netobj = calloc(1, sizeof(*netobj));
> +
> + /* Fill in object data */
> + netobj->parent.protocols[0].guid = &efi_net_guid;
> + netobj->parent.protocols[0].open = efi_return_handle;
> + netobj->parent.protocols[1].guid = &efi_guid_device_path;
> + netobj->parent.protocols[1].open = efi_net_open_dp;
> + netobj->parent.protocols[2].guid = &efi_pxe_guid;
> + netobj->parent.protocols[2].open = efi_net_open_pxe;
> + netobj->parent.handle = &netobj->net;
> + netobj->net.start = efi_net_start;
> + netobj->net.stop = efi_net_stop;
> + netobj->net.initialize = efi_net_initialize;
> + netobj->net.reset = efi_net_reset;
> + netobj->net.shutdown = efi_net_shutdown;
> + netobj->net.receive_filters = efi_net_receive_filters;
> + netobj->net.station_address = efi_net_station_address;
> + netobj->net.statistics = efi_net_statistics;
> + netobj->net.mcastiptomac = efi_net_mcastiptomac;
> + netobj->net.nvdata = efi_net_nvdata;
> + netobj->net.get_status = efi_net_get_status;
> + netobj->net.transmit = efi_net_transmit;
> + netobj->net.receive = efi_net_receive;
> + netobj->net.mode = &netobj->net_mode;
> + netobj->net_mode.state = EFI_NETWORK_STARTED;
> + netobj->dp[0] = dp_net;
> + netobj->dp[1] = dp_end;
> + memcpy(netobj->net_mode.current_address.mac_addr, eth_get_ethaddr(), 6);
> + netobj->net_mode.max_packet_size = PKTSIZE;
Why is this statically created? Shouldn't it come from the U-Boot
ethernet tables dynamically when it is needed?
> +
> + netobj->pxe.mode = &netobj->pxe_mode;
> + if (dhcp_ack)
> + netobj->pxe_mode.dhcp_ack = *dhcp_ack;
> +
> + /* Hook net up to the device list */
> + list_add_tail(&netobj->parent.link, &efi_obj_list);
> +
> + if (handle)
> + *handle = &netobj->net;
> +
> + return 0;
> +}
> diff --git a/net/bootp.c b/net/bootp.c
> index d7852db..d91b307 100644
> --- a/net/bootp.c
> +++ b/net/bootp.c
> @@ -10,6 +10,7 @@
>
> #include <common.h>
> #include <command.h>
> +#include <efi_loader.h>
> #include <net.h>
> #include <net/tftp.h>
> #include "bootp.h"
> @@ -1025,6 +1026,7 @@ static void dhcp_handler(uchar *pkt, unsigned dest, struct in_addr sip,
> strlen(CONFIG_SYS_BOOTFILE_PREFIX)) == 0) {
> #endif /* CONFIG_SYS_BOOTFILE_PREFIX */
> dhcp_packet_process_options(bp);
> + efi_net_set_dhcp_ack(pkt, len);
>
> debug("TRANSITIONING TO REQUESTING STATE\n");
> dhcp_state = REQUESTING;
> diff --git a/net/net.c b/net/net.c
> index fba111e..1e1d23d 100644
> --- a/net/net.c
> +++ b/net/net.c
> @@ -146,7 +146,7 @@ static unsigned net_ip_id;
> /* Ethernet bcast address */
> const u8 net_bcast_ethaddr[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
> const u8 net_null_ethaddr[6];
> -#ifdef CONFIG_API
> +#if defined(CONFIG_API) || defined(CONFIG_EFI_LOADER)
> void (*push_packet)(void *, int len) = 0;
> #endif
> /* Network loop state */
> @@ -1054,7 +1054,7 @@ void net_process_received_packet(uchar *in_packet, int len)
> if (len < ETHER_HDR_SIZE)
> return;
>
> -#ifdef CONFIG_API
> +#if defined(CONFIG_API) || defined(CONFIG_EFI_LOADER)
> if (push_packet) {
> (*push_packet)(in_packet, len);
> return;
> diff --git a/net/tftp.c b/net/tftp.c
> index f2889fe..ced45ec 100644
> --- a/net/tftp.c
> +++ b/net/tftp.c
> @@ -8,6 +8,7 @@
>
> #include <common.h>
> #include <command.h>
> +#include <efi_loader.h>
> #include <mapmem.h>
> #include <net.h>
> #include <net/tftp.h>
> @@ -804,6 +805,7 @@ void tftp_start(enum proto_t protocol)
> printf("Load address: 0x%lx\n", load_addr);
> puts("Loading: *\b");
> tftp_state = STATE_SEND_RRQ;
> + efi_set_bootdev("Net", "", tftp_filename);
> }
>
> time_start = get_timer(0);
> --
> 1.8.5.6
>
> _______________________________________________
> U-Boot mailing list
> U-Boot at lists.denx.de
> http://lists.denx.de/mailman/listinfo/u-boot
Regards,
Simon
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