efi_loader: Add network access support
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. Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexander Graf
Tom Rini
parent
7e6621a1ca
commit
0efe1bcf5c
@ -197,6 +197,13 @@ static unsigned long do_bootefi_exec(void *efi, void *fdt)
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#ifdef CONFIG_LCD
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efi_gop_register();
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#endif
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#ifdef CONFIG_NET
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void *nethandle = loaded_image_info.device_handle;
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efi_net_register(&nethandle);
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if (!memcmp(bootefi_device_path[0].str, "N\0e\0t", 6))
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loaded_image_info.device_handle = nethandle;
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#endif
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/* Call our payload! */
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#ifdef DEBUG_EFI
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@ -412,4 +412,123 @@ struct efi_gop
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struct efi_gop_mode *mode;
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};
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#define EFI_SIMPLE_NETWORK_GUID \
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EFI_GUID(0xa19832b9, 0xac25, 0x11d3, \
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0x9a, 0x2d, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
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struct efi_mac_address {
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char mac_addr[32];
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};
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struct efi_ip_address {
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u8 ip_addr[16];
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};
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enum efi_simple_network_state {
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EFI_NETWORK_STOPPED,
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EFI_NETWORK_STARTED,
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EFI_NETWORK_INITIALIZED,
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};
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struct efi_simple_network_mode {
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enum efi_simple_network_state state;
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u32 hwaddr_size;
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u32 media_header_size;
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u32 max_packet_size;
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u32 nvram_size;
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u32 nvram_access_size;
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u32 receive_filter_mask;
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u32 receive_filter_setting;
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u32 max_mcast_filter_count;
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u32 mcast_filter_count;
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struct efi_mac_address mcast_filter[16];
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struct efi_mac_address current_address;
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struct efi_mac_address broadcast_address;
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struct efi_mac_address permanent_address;
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u8 if_type;
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u8 mac_changeable;
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u8 multitx_supported;
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u8 media_present_supported;
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u8 media_present;
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};
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#define EFI_SIMPLE_NETWORK_RECEIVE_UNICAST 0x01,
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#define EFI_SIMPLE_NETWORK_RECEIVE_MULTICAST 0x02,
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#define EFI_SIMPLE_NETWORK_RECEIVE_BROADCAST 0x04,
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#define EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS 0x08,
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#define EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS_MULTICAST 0x10,
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struct efi_simple_network
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{
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u64 revision;
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efi_status_t (EFIAPI *start)(struct efi_simple_network *this);
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efi_status_t (EFIAPI *stop)(struct efi_simple_network *this);
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efi_status_t (EFIAPI *initialize)(struct efi_simple_network *this,
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ulong extra_rx, ulong extra_tx);
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efi_status_t (EFIAPI *reset)(struct efi_simple_network *this,
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int extended_verification);
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efi_status_t (EFIAPI *shutdown)(struct efi_simple_network *this);
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efi_status_t (EFIAPI *receive_filters)(struct efi_simple_network *this,
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u32 enable, u32 disable, int reset_mcast_filter,
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ulong mcast_filter_count,
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struct efi_mac_address *mcast_filter);
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efi_status_t (EFIAPI *station_address)(struct efi_simple_network *this,
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int reset, struct efi_mac_address *new_mac);
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efi_status_t (EFIAPI *statistics)(struct efi_simple_network *this,
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int reset, ulong *stat_size, void *stat_table);
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efi_status_t (EFIAPI *mcastiptomac)(struct efi_simple_network *this,
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int ipv6, struct efi_ip_address *ip,
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struct efi_mac_address *mac);
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efi_status_t (EFIAPI *nvdata)(struct efi_simple_network *this,
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int read_write, ulong offset, ulong buffer_size,
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char *buffer);
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efi_status_t (EFIAPI *get_status)(struct efi_simple_network *this,
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u32 *int_status, void **txbuf);
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efi_status_t (EFIAPI *transmit)(struct efi_simple_network *this,
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ulong header_size, ulong buffer_size, void *buffer,
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struct efi_mac_address *src_addr,
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struct efi_mac_address *dest_addr, u16 *protocol);
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efi_status_t (EFIAPI *receive)(struct efi_simple_network *this,
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ulong *header_size, ulong *buffer_size, void *buffer,
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struct efi_mac_address *src_addr,
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struct efi_mac_address *dest_addr, u16 *protocol);
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void (EFIAPI *waitforpacket)(void);
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struct efi_simple_network_mode *mode;
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};
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#define EFI_PXE_GUID \
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EFI_GUID(0x03c4e603, 0xac28, 0x11d3, \
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0x9a, 0x2d, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
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struct efi_pxe_packet {
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u8 packet[1472];
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};
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struct efi_pxe_mode
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{
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u8 unused[52];
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struct efi_pxe_packet dhcp_discover;
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struct efi_pxe_packet dhcp_ack;
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struct efi_pxe_packet proxy_offer;
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struct efi_pxe_packet pxe_discover;
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struct efi_pxe_packet pxe_reply;
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};
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struct efi_pxe {
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u64 rev;
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void (EFIAPI *start)(void);
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void (EFIAPI *stop)(void);
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void (EFIAPI *dhcp)(void);
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void (EFIAPI *discover)(void);
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void (EFIAPI *mftp)(void);
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void (EFIAPI *udpwrite)(void);
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void (EFIAPI *udpread)(void);
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void (EFIAPI *setipfilter)(void);
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void (EFIAPI *arp)(void);
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void (EFIAPI *setparams)(void);
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void (EFIAPI *setstationip)(void);
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void (EFIAPI *setpackets)(void);
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struct efi_pxe_mode *mode;
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};
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#endif
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@ -91,6 +91,12 @@ extern struct list_head efi_obj_list;
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int efi_disk_register(void);
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/* Called by bootefi to make GOP (graphical) interface available */
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int efi_gop_register(void);
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/* Called by bootefi to make the network interface available */
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int efi_net_register(void **handle);
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/* Called by networking code to memorize the dhcp ack package */
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void efi_net_set_dhcp_ack(void *pkt, int len);
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/*
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* Stub implementation for a protocol opener that just returns the handle as
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* interface
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@ -157,5 +163,6 @@ static inline void ascii2unicode(u16 *unicode, char *ascii)
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static inline void efi_restore_gd(void) { }
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static inline void efi_set_bootdev(const char *dev, const char *devnr,
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const char *path) { }
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static inline void efi_net_set_dhcp_ack(void *pkt, int len) { }
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#endif
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@ -269,7 +269,7 @@ int eth_getenv_enetaddr_by_index(const char *base_name, int index,
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int eth_init(void); /* Initialize the device */
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int eth_send(void *packet, int length); /* Send a packet */
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#ifdef CONFIG_API
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#if defined(CONFIG_API) || defined(CONFIG_EFI_LOADER)
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int eth_receive(void *packet, int length); /* Receive a packet*/
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extern void (*push_packet)(void *packet, int length);
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#endif
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@ -11,3 +11,4 @@ obj-y += efi_image_loader.o efi_boottime.o efi_runtime.o efi_console.o
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obj-y += efi_memory.o
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obj-$(CONFIG_LCD) += efi_gop.o
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obj-$(CONFIG_PARTITIONS) += efi_disk.o
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obj-$(CONFIG_NET) += efi_net.o
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291
lib/efi_loader/efi_net.c
Normal file
291
lib/efi_loader/efi_net.c
Normal file
@ -0,0 +1,291 @@
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/*
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* EFI application network access support
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*
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* Copyright (c) 2016 Alexander Graf
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <efi_loader.h>
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#include <inttypes.h>
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#include <lcd.h>
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#include <malloc.h>
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DECLARE_GLOBAL_DATA_PTR;
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static const efi_guid_t efi_net_guid = EFI_SIMPLE_NETWORK_GUID;
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static const efi_guid_t efi_pxe_guid = EFI_PXE_GUID;
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static struct efi_pxe_packet *dhcp_ack;
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static bool new_rx_packet;
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static void *new_tx_packet;
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struct efi_net_obj {
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/* Generic EFI object parent class data */
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struct efi_object parent;
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/* EFI Interface callback struct for network */
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struct efi_simple_network net;
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struct efi_simple_network_mode net_mode;
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/* Device path to the network adapter */
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struct efi_device_path_file_path dp[2];
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/* PXE struct to transmit dhcp data */
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struct efi_pxe pxe;
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struct efi_pxe_mode pxe_mode;
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};
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static efi_status_t EFIAPI efi_net_start(struct efi_simple_network *this)
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{
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EFI_ENTRY("%p", this);
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return EFI_EXIT(EFI_SUCCESS);
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}
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static efi_status_t EFIAPI efi_net_stop(struct efi_simple_network *this)
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{
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EFI_ENTRY("%p", this);
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return EFI_EXIT(EFI_SUCCESS);
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}
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static efi_status_t EFIAPI efi_net_initialize(struct efi_simple_network *this,
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ulong extra_rx, ulong extra_tx)
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{
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EFI_ENTRY("%p, %lx, %lx", this, extra_rx, extra_tx);
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eth_init();
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return EFI_EXIT(EFI_SUCCESS);
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}
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static efi_status_t EFIAPI efi_net_reset(struct efi_simple_network *this,
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int extended_verification)
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{
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EFI_ENTRY("%p, %x", this, extended_verification);
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return EFI_EXIT(EFI_SUCCESS);
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}
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static efi_status_t EFIAPI efi_net_shutdown(struct efi_simple_network *this)
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{
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EFI_ENTRY("%p", this);
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return EFI_EXIT(EFI_SUCCESS);
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}
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static efi_status_t EFIAPI efi_net_receive_filters(
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struct efi_simple_network *this, u32 enable, u32 disable,
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int reset_mcast_filter, ulong mcast_filter_count,
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struct efi_mac_address *mcast_filter)
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{
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EFI_ENTRY("%p, %x, %x, %x, %lx, %p", this, enable, disable,
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reset_mcast_filter, mcast_filter_count, mcast_filter);
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/* XXX Do we care? */
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return EFI_EXIT(EFI_SUCCESS);
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}
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static efi_status_t EFIAPI efi_net_station_address(
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struct efi_simple_network *this, int reset,
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struct efi_mac_address *new_mac)
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{
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EFI_ENTRY("%p, %x, %p", this, reset, new_mac);
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return EFI_EXIT(EFI_INVALID_PARAMETER);
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}
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static efi_status_t EFIAPI efi_net_statistics(struct efi_simple_network *this,
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int reset, ulong *stat_size,
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void *stat_table)
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{
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EFI_ENTRY("%p, %x, %p, %p", this, reset, stat_size, stat_table);
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return EFI_EXIT(EFI_INVALID_PARAMETER);
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}
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static efi_status_t EFIAPI efi_net_mcastiptomac(struct efi_simple_network *this,
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int ipv6,
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struct efi_ip_address *ip,
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struct efi_mac_address *mac)
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{
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EFI_ENTRY("%p, %x, %p, %p", this, ipv6, ip, mac);
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return EFI_EXIT(EFI_INVALID_PARAMETER);
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}
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static efi_status_t EFIAPI efi_net_nvdata(struct efi_simple_network *this,
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int read_write, ulong offset,
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ulong buffer_size, char *buffer)
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{
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EFI_ENTRY("%p, %x, %lx, %lx, %p", this, read_write, offset, buffer_size,
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buffer);
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return EFI_EXIT(EFI_INVALID_PARAMETER);
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}
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static efi_status_t EFIAPI efi_net_get_status(struct efi_simple_network *this,
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u32 *int_status, void **txbuf)
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{
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EFI_ENTRY("%p, %p, %p", this, int_status, txbuf);
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/* We send packets synchronously, so nothing is outstanding */
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if (int_status)
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*int_status = 0;
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if (txbuf)
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*txbuf = new_tx_packet;
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new_tx_packet = NULL;
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return EFI_EXIT(EFI_SUCCESS);
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}
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static efi_status_t EFIAPI efi_net_transmit(struct efi_simple_network *this,
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ulong header_size, ulong buffer_size, void *buffer,
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struct efi_mac_address *src_addr,
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struct efi_mac_address *dest_addr, u16 *protocol)
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{
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EFI_ENTRY("%p, %lx, %lx, %p, %p, %p, %p", this, header_size,
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buffer_size, buffer, src_addr, dest_addr, protocol);
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if (header_size) {
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/* We would need to create the header if header_size != 0 */
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return EFI_EXIT(EFI_INVALID_PARAMETER);
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}
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net_send_packet(buffer, buffer_size);
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new_tx_packet = buffer;
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return EFI_EXIT(EFI_SUCCESS);
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}
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static void efi_net_push(void *pkt, int len)
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{
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new_rx_packet = true;
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}
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static efi_status_t EFIAPI efi_net_receive(struct efi_simple_network *this,
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ulong *header_size, ulong *buffer_size, void *buffer,
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struct efi_mac_address *src_addr,
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struct efi_mac_address *dest_addr, u16 *protocol)
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{
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EFI_ENTRY("%p, %p, %p, %p, %p, %p, %p", this, header_size,
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buffer_size, buffer, src_addr, dest_addr, protocol);
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push_packet = efi_net_push;
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eth_rx();
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push_packet = NULL;
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if (!new_rx_packet)
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return EFI_EXIT(EFI_NOT_READY);
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if (*buffer_size < net_rx_packet_len) {
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/* Packet doesn't fit, try again with bigger buf */
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*buffer_size = net_rx_packet_len;
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return EFI_EXIT(EFI_BUFFER_TOO_SMALL);
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}
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memcpy(buffer, net_rx_packet, net_rx_packet_len);
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*buffer_size = net_rx_packet_len;
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new_rx_packet = false;
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return EFI_EXIT(EFI_SUCCESS);
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}
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static efi_status_t efi_net_open_dp(void *handle, efi_guid_t *protocol,
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void **protocol_interface, void *agent_handle,
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void *controller_handle, uint32_t attributes)
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{
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struct efi_simple_network *net = handle;
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struct efi_net_obj *netobj = container_of(net, struct efi_net_obj, net);
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*protocol_interface = netobj->dp;
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return EFI_SUCCESS;
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}
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static efi_status_t efi_net_open_pxe(void *handle, efi_guid_t *protocol,
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void **protocol_interface, void *agent_handle,
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void *controller_handle, uint32_t attributes)
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{
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struct efi_simple_network *net = handle;
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struct efi_net_obj *netobj = container_of(net, struct efi_net_obj, net);
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*protocol_interface = &netobj->pxe;
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return EFI_SUCCESS;
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}
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void efi_net_set_dhcp_ack(void *pkt, int len)
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{
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int maxsize = sizeof(*dhcp_ack);
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if (!dhcp_ack)
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dhcp_ack = malloc(maxsize);
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memcpy(dhcp_ack, pkt, min(len, maxsize));
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}
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/* This gets called from do_bootefi_exec(). */
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int efi_net_register(void **handle)
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{
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struct efi_net_obj *netobj;
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struct efi_device_path_file_path dp_net = {
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.dp.type = DEVICE_PATH_TYPE_MEDIA_DEVICE,
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.dp.sub_type = DEVICE_PATH_SUB_TYPE_FILE_PATH,
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.dp.length = sizeof(dp_net),
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.str = { 'N', 'e', 't' },
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};
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struct efi_device_path_file_path dp_end = {
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.dp.type = DEVICE_PATH_TYPE_END,
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.dp.sub_type = DEVICE_PATH_SUB_TYPE_END,
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.dp.length = sizeof(dp_end),
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};
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if (!eth_get_dev()) {
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/* No eth device active, don't expose any */
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return 0;
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}
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/* We only expose the "active" eth device, so one is enough */
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netobj = calloc(1, sizeof(*netobj));
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/* Fill in object data */
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netobj->parent.protocols[0].guid = &efi_net_guid;
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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;
|
||||
|
||||
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;
|
||||
}
|
||||
@ -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;
|
||||
|
||||
@ -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;
|
||||
|
||||
@ -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);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user