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efi_loader: Add network access support

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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 2016-05-06 21:01:01 +02:00 • committed by Tom Rini
parent 7e6621a1ca
commit 0efe1bcf5c
9 changed files with 432 additions and 3 deletions
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119
include/efi_api.h
View file

@ -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