From 0efe1bcf5c2ce89d7c2467550e2823d7f95733e0 Mon Sep 17 00:00:00 2001 From: Alexander Graf Date: Fri, 6 May 2016 21:01:01 +0200 Subject: 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 --- include/efi_api.h | 119 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 119 insertions(+) (limited to 'include/efi_api.h') diff --git a/include/efi_api.h b/include/efi_api.h index 51d7586e634..20035d72727 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 -- cgit v1.2.3 From a86aeaf228da739bce6bc40927949efc33672050 Mon Sep 17 00:00:00 2001 From: Alexander Graf Date: Fri, 20 May 2016 23:28:23 +0200 Subject: efi_loader: Add exit support Some times you may want to exit an EFI payload again, for example to default boot into a PXE installation and decide that you would rather want to boot from the local disk instead. This patch adds exit functionality to the EFI implementation, allowing EFI payloads to exit. Signed-off-by: Alexander Graf --- include/efi_api.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/efi_api.h') diff --git a/include/efi_api.h b/include/efi_api.h index 20035d72727..f572b880798 100644 --- a/include/efi_api.h +++ b/include/efi_api.h @@ -17,6 +17,10 @@ #include +#ifdef CONFIG_EFI_LOADER +#include +#endif + /* Types and defines for EFI CreateEvent */ enum efi_event_type { EFI_TIMER_STOP = 0, @@ -239,6 +243,12 @@ struct efi_loaded_image { unsigned int image_code_type; unsigned int image_data_type; unsigned long unload; + + /* Below are efi loader private fields */ +#ifdef CONFIG_EFI_LOADER + efi_status_t exit_status; + struct jmp_buf_data exit_jmp; +#endif }; #define DEVICE_PATH_GUID \ -- cgit v1.2.3