| 1 | #ifndef ETHERBOOT_H
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| 2 | #define ETHERBOOT_H
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| 3 |
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| 4 | #include <stdarg.h>
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| 5 | #include "osdep.h"
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| 6 | #ifdef VBOX
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| 7 | #include "etherboot-asm.h"
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| 8 | #endif /* VBOX */
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| 9 |
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| 10 | #ifndef BOOT_FIRST
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| 11 | #define BOOT_FIRST BOOT_NIC
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| 12 | #endif
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| 13 | #ifndef BOOT_SECOND
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| 14 | #define BOOT_SECOND BOOT_NOTHING
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| 15 | #endif
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| 16 | #ifndef BOOT_THIRD
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| 17 | #define BOOT_THIRD BOOT_NOTHING
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| 18 | #endif
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| 19 |
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| 20 | #define DEFAULT_BOOT_ORDER ( \
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| 21 | (BOOT_FIRST << (0*BOOT_BITS)) | \
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| 22 | (BOOT_SECOND << (1*BOOT_BITS)) | \
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| 23 | (BOOT_THIRD << (2*BOOT_BITS)) | \
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| 24 | (BOOT_NOTHING << (3*BOOT_BITS)) | \
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| 25 | 0)
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| 26 |
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| 27 | #ifdef BOOT_INDEX
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| 28 | #define DEFAULT_BOOT_INDEX BOOT_INDEX
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| 29 | #else
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| 30 | #define DEFAULT_BOOT_INDEX 0
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| 31 | #endif
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| 32 |
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| 33 | #if !defined(TAGGED_IMAGE) && !defined(AOUT_IMAGE) && !defined(ELF_IMAGE) && !defined(ELF64_IMAGE) && !defined(COFF_IMAGE) && !defined(RAW_IMAGE) && !defined(PXE_IMAGE)
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| 34 | #define TAGGED_IMAGE /* choose at least one */
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| 35 | #endif
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| 36 |
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| 37 | #undef CODE16
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| 38 | #if defined(PCBIOS)
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| 39 | #define CODE16
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| 40 | #endif
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| 41 |
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| 42 | #ifdef VBOX
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| 43 | #define __STRINGIFY(x) #x
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| 44 | #define STRINGIFY(x) __STRINGIFY(x)
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| 45 | #endif /* VBOX */
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| 46 |
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| 47 | #define K_ESC '\033'
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| 48 | #define K_EOF '\04' /* Ctrl-D */
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| 49 | #define K_INTR '\03' /* Ctrl-C */
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| 50 |
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| 51 | /* Edit this to change the path to hostspecific kernel image
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| 52 | kernel.<client_ip_address> in RARP boot */
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| 53 | #ifndef DEFAULT_KERNELPATH
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| 54 | #define DEFAULT_KERNELPATH "/tftpboot/kernel.%@"
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| 55 | #endif
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| 56 |
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| 57 | #ifdef FREEBSD_PXEEMU
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| 58 | #undef DEFAULT_BOOTFILE
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| 59 | #ifndef PXENFSROOTPATH
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| 60 | #define PXENFSROOTPATH ""
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| 61 | #endif
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| 62 | #define DEFAULT_BOOTFILE PXENFSROOTPATH "/boot/pxeboot"
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| 63 | #endif
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| 64 |
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| 65 | /* Clean up console settings... mainly CONSOLE_FIRMWARE and CONSOLE_SERIAL are used
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| 66 | * in the sources (except start.S and serial.S which cannot include
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| 67 | * etherboot.h). At least one of the CONSOLE_xxx has to be set, and
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| 68 | * CONSOLE_DUAL sets both CONSOLE_CRT and CONSOLE_SERIAL. If none is set,
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| 69 | * CONSOLE_CRT is assumed. */
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| 70 | #ifdef CONSOLE_CRT
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| 71 | #define CONSOLE_FIRMWARE
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| 72 | #endif
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| 73 | #ifdef CONSOLE_DUAL
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| 74 | #undef CONSOLE_FIRMWARE
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| 75 | #define CONSOLE_FIRMWARE
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| 76 | #undef CONSOLE_SERIAL
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| 77 | #define CONSOLE_SERIAL
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| 78 | #endif
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| 79 | #if defined(CONSOLE_FIRMWARE) && defined(CONSOLE_SERIAL)
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| 80 | #undef CONSOLE_DUAL
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| 81 | #define CONSOLE_DUAL
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| 82 | #endif
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| 83 | #if !defined(CONSOLE_FIRMWARE) && !defined(CONSOLE_SERIAL)
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| 84 | #define CONSOLE_FIRMWARE
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| 85 | #endif
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| 86 |
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| 87 | #if !defined(DOWNLOAD_PROTO_TFTP) && !defined(DOWNLOAD_PROTO_NFS) && !defined(DOWNLOAD_PROTO_SLAM) && !defined(DOWNLOAD_PROTO_TFTM) && !defined(DOWNLOAD_PROTO_DISK) && !defined(DOWNLOAD_PROTO_HTTP) && !defined(DOWNLOAD_PROTO_FSP)
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| 88 | #error No download protocol defined!
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| 89 | #endif
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| 90 |
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| 91 | #ifndef MAX_TFTP_RETRIES
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| 92 | #define MAX_TFTP_RETRIES 20
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| 93 | #endif
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| 94 |
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| 95 | #ifndef MAX_BOOTP_RETRIES
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| 96 | #define MAX_BOOTP_RETRIES 20
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| 97 | #endif
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| 98 |
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| 99 | #define MAX_BOOTP_EXTLEN (ETH_MAX_MTU-sizeof(struct bootpip_t))
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| 100 |
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| 101 | #ifndef MAX_ARP_RETRIES
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| 102 | #define MAX_ARP_RETRIES 20
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| 103 | #endif
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| 104 |
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| 105 | #ifndef MAX_RPC_RETRIES
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| 106 | #define MAX_RPC_RETRIES 20
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| 107 | #endif
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| 108 |
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| 109 | /* Link configuration time in tenths of a second */
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| 110 | #ifndef VALID_LINK_TIMEOUT
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| 111 | #define VALID_LINK_TIMEOUT 100 /* 10.0 seconds */
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| 112 | #endif
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| 113 |
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| 114 | /* Inter-packet retry in ticks */
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| 115 | #ifndef TIMEOUT
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| 116 | #define TIMEOUT (10*TICKS_PER_SEC)
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| 117 | #endif
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| 118 |
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| 119 | #ifndef BOOTP_TIMEOUT
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| 120 | #define BOOTP_TIMEOUT (2*TICKS_PER_SEC)
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| 121 | #endif
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| 122 |
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| 123 | /* Max interval between IGMP packets */
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| 124 | #define IGMP_INTERVAL (10*TICKS_PER_SEC)
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| 125 | #define IGMPv1_ROUTER_PRESENT_TIMEOUT (400*TICKS_PER_SEC)
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| 126 |
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| 127 | /* These settings have sense only if compiled with -DCONGESTED */
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| 128 | /* total retransmission timeout in ticks */
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| 129 | #define TFTP_TIMEOUT (30*TICKS_PER_SEC)
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| 130 | /* packet retransmission timeout in ticks */
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| 131 | #ifdef CONGESTED
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| 132 | #define TFTP_REXMT (3*TICKS_PER_SEC)
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| 133 | #else
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| 134 | #define TFTP_REXMT TIMEOUT
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| 135 | #endif
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| 136 |
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| 137 | #ifndef NULL
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| 138 | #define NULL ((void *)0)
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| 139 | #endif
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| 140 |
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| 141 | #include "if_ether.h"
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| 142 |
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| 143 | enum {
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| 144 | ARP_CLIENT, ARP_SERVER, ARP_GATEWAY,
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| 145 | #ifdef DNS_RESOLVER
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| 146 | ARP_NAMESERVER,
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| 147 | #endif
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| 148 | #ifdef PXE_EXPORT
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| 149 | ARP_PROXYDHCP,
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| 150 | #endif
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| 151 | MAX_ARP
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| 152 | };
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| 153 |
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| 154 | #define IGMP_SERVER 0
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| 155 | #define MAX_IGMP IGMP_SERVER+1
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| 156 |
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| 157 | #define RARP_REQUEST 3
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| 158 | #define RARP_REPLY 4
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| 159 |
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| 160 | #include "in.h"
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| 161 |
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| 162 | #define MULTICAST_MASK 0xF0000000
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| 163 | #define MULTICAST_NETWORK 0xE0000000
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| 164 |
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| 165 | /* Helper macros used to identify when DHCP options are valid/invalid in/outside of encapsulation */
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| 166 | /* helpers for decoding RFC1533_VENDOR encapsulated options */
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| 167 | #ifdef PXE_DHCP_STRICT
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| 168 | #define PXE_ENCAP_OPT in_pxe_encapsulated_options == 1 &&
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| 169 | #define PXE_NONENCAP_OPT in_pxe_encapsulated_options == 0 &&
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| 170 | #else
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| 171 | #define PXE_ENCAP_OPT
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| 172 | #define PXE_NONENCAP_OPT
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| 173 | #endif /* PXE_DHCP_STRICT */
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| 174 |
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| 175 | #define NON_ENCAP_OPT in_encapsulated_options == 0 && PXE_NONENCAP_OPT
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| 176 | #ifdef ALLOW_ONLY_ENCAPSULATED
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| 177 | #define ENCAP_OPT in_encapsulated_options == 1 &&
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| 178 | #else
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| 179 | #define ENCAP_OPT PXE_NONENCAP_OPT
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| 180 | #endif
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| 181 |
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| 182 | #include "if_arp.h"
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| 183 | #include "ip.h"
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| 184 | #include "udp.h"
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| 185 | #include "tcp.h"
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| 186 | #include "bootp.h"
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| 187 | #include "tftp.h"
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| 188 | #include "igmp.h"
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| 189 | #include "nfs.h"
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| 190 |
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| 191 | struct arptable_t {
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| 192 | in_addr ipaddr;
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| 193 | uint8_t node[6];
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| 194 | } PACKED;
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| 195 |
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| 196 | struct igmptable_t {
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| 197 | in_addr group;
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| 198 | unsigned long time;
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| 199 | } PACKED;
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| 200 |
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| 201 | #define KERNEL_BUF (bootp_data.bootp_reply.bp_file)
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| 202 |
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| 203 | #define FLOPPY_BOOT_LOCATION 0x7c00
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| 204 |
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| 205 | struct rom_info {
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| 206 | unsigned short rom_segment;
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| 207 | unsigned short rom_length;
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| 208 | };
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| 209 |
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| 210 | extern inline int rom_address_ok(struct rom_info *rom, int assigned_rom_segment)
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| 211 | {
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| 212 | return (assigned_rom_segment < 0xC000
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| 213 | || assigned_rom_segment == rom->rom_segment);
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| 214 | }
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| 215 |
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| 216 | /* Define a type for passing info to a loaded program */
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| 217 | struct ebinfo {
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| 218 | uint8_t major, minor; /* Version */
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| 219 | uint16_t flags; /* Bit flags */
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| 220 | };
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| 221 |
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| 222 | /***************************************************************************
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| 223 | External prototypes
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| 224 | ***************************************************************************/
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| 225 | /* main.c */
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| 226 | struct Elf_Bhdr;
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| 227 | extern int in_call(in_call_data_t *data, uint32_t opcode, va_list params);
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| 228 | extern void console_init(void);
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| 229 | extern int main(in_call_data_t *data, va_list params);
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| 230 | extern int loadkernel P((const char *fname));
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| 231 | extern char as_main_program;
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| 232 | /* nic.c */
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| 233 | extern void rx_qdrain P((void));
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| 234 | extern int tftp P((const char *name, int (*)(unsigned char *, unsigned int, unsigned int, int)));
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| 235 | extern int tftp_block P((struct tftpreq_info_t *, struct tftpblk_info_t *));
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| 236 | extern int ip_transmit P((int len, const void *buf));
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| 237 | extern void build_ip_hdr P((unsigned long destip, int ttl, int protocol,
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| 238 | int option_len, int len, const void *buf));
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| 239 | extern void build_udp_hdr P((unsigned long destip,
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| 240 | unsigned int srcsock, unsigned int destsock, int ttl,
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| 241 | int len, const void *buf));
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| 242 | extern int udp_transmit P((unsigned long destip, unsigned int srcsock,
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| 243 | unsigned int destsock, int len, const void *buf));
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| 244 | extern int tcp_transmit(unsigned long destip, unsigned int srcsock,
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| 245 | unsigned int destsock, long send_seq, long recv_seq,
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| 246 | int window, int flags, int len, const void *buf);
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| 247 | extern int tcp_reset(struct iphdr *ip);
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| 248 | typedef int (*reply_t)(int ival, void *ptr, unsigned short ptype, struct iphdr *ip, struct udphdr *udp, struct tcphdr *tcp);
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| 249 | extern int await_reply P((reply_t reply, int ival, void *ptr, long timeout));
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| 250 | extern int decode_rfc1533 P((unsigned char *, unsigned int, unsigned int, int));
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| 251 | extern void join_group(int slot, unsigned long group);
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| 252 | extern void leave_group(int slot);
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| 253 | #define RAND_MAX 2147483647L
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| 254 | extern uint16_t ipchksum P((const void *ip, unsigned long len));
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| 255 | extern uint16_t add_ipchksums P((unsigned long offset, uint16_t sum, uint16_t new));
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| 256 | extern int32_t random P((void));
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| 257 | extern long rfc2131_sleep_interval P((long base, int exp));
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| 258 | extern long rfc1112_sleep_interval P((long base, int exp));
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| 259 | #ifndef DOWNLOAD_PROTO_TFTP
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| 260 | #define tftp(fname, load_block) 0
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| 261 | #endif
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| 262 | extern void cleanup P((void));
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| 263 |
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| 264 | /* nfs.c */
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| 265 | extern void rpc_init(void);
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| 266 | extern int nfs P((const char *name, int (*)(unsigned char *, unsigned int, unsigned int, int)));
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| 267 | extern void nfs_umountall P((int));
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| 268 |
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| 269 | /* proto_slam.c */
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| 270 | extern int url_slam P((const char *name, int (*fnc)(unsigned char *, unsigned int, unsigned int, int)));
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| 271 |
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| 272 | /* proto_tftm.c */
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| 273 | extern int url_tftm P((const char *name, int (*fnc)(unsigned char *, unsigned int, unsigned int, int)));
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| 274 |
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| 275 | /* proto_fsp.c */
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| 276 | extern int url_fsp P((const char *name, int (*fnc)(unsigned char *, unsigned int, unsigned int, int)));
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| 277 |
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| 278 | /* config.c */
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| 279 | extern void print_config(void);
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| 280 |
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| 281 | /* isa_probe.c and pci_probe.c */
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| 282 | struct dev;
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| 283 | extern void isa_enumerate(void);
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| 284 | extern int isa_probe(struct dev *, const char *);
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| 285 | extern void pci_enumerate(void);
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| 286 | extern int pci_probe(struct dev *, const char *);
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| 287 |
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| 288 | /* heap.c */
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| 289 | extern void init_heap(void);
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| 290 | extern void *allot(size_t size);
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| 291 | extern void forget(void *ptr);
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| 292 | extern void *allot2(size_t size, uint32_t mask);
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| 293 | extern void forget2(void *ptr);
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| 294 | /* Physical address of the heap */
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| 295 | extern size_t heap_ptr, heap_top, heap_bot;
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| 296 |
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| 297 | /* osloader.c */
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| 298 | /* Be careful with sector_t it is an unsigned long long on x86 */
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| 299 | typedef uint64_t sector_t;
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| 300 | typedef sector_t (*os_download_t)(unsigned char *data, unsigned int len, int eof);
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| 301 | extern os_download_t probe_image(unsigned char *data, unsigned int len);
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| 302 | extern int load_block P((unsigned char *, unsigned int, unsigned int, int ));
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| 303 |
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| 304 | /* misc.c */
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| 305 | extern void twiddle P((void));
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| 306 | extern void sleep P((int secs));
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| 307 | extern void interruptible_sleep P((int secs));
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| 308 | extern void poll_interruptions P((void));
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| 309 | extern int strcasecmp P((const char *a, const char *b));
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| 310 | extern char *substr P((const char *a, const char *b));
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| 311 | extern unsigned long strtoul P((const char *p, const char **, int base));
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| 312 | extern int printf P((const char *, ...));
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| 313 | extern int sprintf P((char *, const char *, ...));
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| 314 | extern int inet_aton P((const char *p, in_addr *i));
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| 315 | #ifdef PCBIOS
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| 316 | extern void gateA20_set P((void));
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| 317 | #define gateA20_unset()
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| 318 | #else
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| 319 | #define gateA20_set()
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| 320 | #define gateA20_unset()
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| 321 | #endif
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| 322 | extern void putchar P((int));
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| 323 | extern int getchar P((void));
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| 324 | extern int iskey P((void));
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| 325 |
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| 326 | /* pcbios.S */
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| 327 | extern int console_getc P((void));
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| 328 | extern void console_putc P((int));
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| 329 | extern int console_ischar P((void));
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| 330 | extern int getshift P((void));
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| 331 | extern int int15 P((int));
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| 332 | #ifdef POWERSAVE
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| 333 | extern void cpu_nap P((void));
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| 334 | #endif /* POWERSAVE */
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| 335 |
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| 336 | /* basemem.c */
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| 337 | extern uint32_t get_free_base_memory ( void );
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| 338 | extern void allot_real_mode_stack ( void );
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| 339 | extern void forget_real_mode_stack ( void );
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| 340 | extern void * allot_base_memory ( size_t );
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| 341 | extern void forget_base_memory ( void*, size_t );
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| 342 | extern void forget_prefix_base_memory ( void );
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| 343 | extern void forget_runtime_base_memory ( uint32_t old_addr );
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| 344 |
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| 345 | struct e820entry {
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| 346 | uint64_t addr;
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| 347 | uint64_t size;
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| 348 | uint32_t type;
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| 349 | #define E820_RAM 1
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| 350 | #define E820_RESERVED 2
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| 351 | #define E820_ACPI 3 /* usable as RAM once ACPI tables have been read */
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| 352 | #define E820_NVS 4
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| 353 | } PACKED;
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| 354 | #define E820ENTRY_SIZE 20
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| 355 | #define E820MAX 32
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| 356 | struct meminfo {
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| 357 | uint16_t basememsize;
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| 358 | uint16_t pad;
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| 359 | uint32_t memsize;
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| 360 | uint32_t map_count;
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| 361 | struct e820entry map[E820MAX];
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| 362 | } PACKED;
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| 363 | extern struct meminfo meminfo;
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| 364 | extern void get_memsizes(void);
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| 365 | extern unsigned long get_boot_order(unsigned long order, unsigned *index);
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| 366 | #ifndef NORELOCATE
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| 367 | extern void relocate(void);
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| 368 | extern void relocate_to(unsigned long phys_dest);
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| 369 | #else
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| 370 | #define relocate() do {} while(0)
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| 371 | #endif
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| 372 | extern void disk_init P((void));
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| 373 | extern unsigned int pcbios_disk_read P((int drv,int c,int h,int s,char *buf));
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| 374 |
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| 375 | /* start32.S */
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| 376 | struct os_entry_regs {
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| 377 | /* Be careful changing this structure
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| 378 | * as it is used by assembly language code.
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| 379 | */
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| 380 | uint32_t edi; /* 0 */
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| 381 | uint32_t esi; /* 4 */
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| 382 | uint32_t ebp; /* 8 */
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| 383 | uint32_t esp; /* 12 */
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| 384 | uint32_t ebx; /* 16 */
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| 385 | uint32_t edx; /* 20 */
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| 386 | uint32_t ecx; /* 24 */
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| 387 | uint32_t eax; /* 28 */
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| 388 |
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| 389 | uint32_t saved_ebp; /* 32 */
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| 390 | uint32_t saved_esi; /* 36 */
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| 391 | uint32_t saved_edi; /* 40 */
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| 392 | uint32_t saved_ebx; /* 44 */
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| 393 | uint32_t saved_eip; /* 48 */
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| 394 | uint32_t saved_esp; /* 52 */
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| 395 | };
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| 396 | struct regs {
|
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| 397 | /* Be careful changing this structure
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| 398 | * as it is used by assembly language code.
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| 399 | */
|
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| 400 | uint32_t edi; /* 0 */
|
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| 401 | uint32_t esi; /* 4 */
|
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| 402 | uint32_t ebp; /* 8 */
|
|---|
| 403 | uint32_t esp; /* 12 */
|
|---|
| 404 | uint32_t ebx; /* 16 */
|
|---|
| 405 | uint32_t edx; /* 20 */
|
|---|
| 406 | uint32_t ecx; /* 24 */
|
|---|
| 407 | uint32_t eax; /* 28 */
|
|---|
| 408 | };
|
|---|
| 409 | extern struct os_entry_regs os_regs;
|
|---|
| 410 | extern struct regs initial_regs;
|
|---|
| 411 | extern int xstart32(unsigned long entry_point, ...);
|
|---|
| 412 | extern int xstart_lm(unsigned long entry_point, unsigned long params);
|
|---|
| 413 | extern void xend32 P((void));
|
|---|
| 414 | extern struct Elf_Bhdr *prepare_boot_params(void *header);
|
|---|
| 415 | extern int elf_start(unsigned long machine, unsigned long entry, unsigned long params);
|
|---|
| 416 | extern unsigned long currticks P((void));
|
|---|
| 417 | extern void exit P((int status));
|
|---|
| 418 | extern void _stack;
|
|---|
| 419 | extern char _prefix_copy[512];
|
|---|
| 420 | extern uint32_t image_basemem;
|
|---|
| 421 |
|
|---|
| 422 | /* serial.c */
|
|---|
| 423 | extern int serial_getc P((void));
|
|---|
| 424 | extern void serial_putc P((int));
|
|---|
| 425 | extern int serial_ischar P((void));
|
|---|
| 426 | extern int serial_init P((void));
|
|---|
| 427 | extern void serial_fini P((void));
|
|---|
| 428 |
|
|---|
| 429 | /* floppy.c */
|
|---|
| 430 | extern int bootdisk P((int dev,int part));
|
|---|
| 431 |
|
|---|
| 432 | /* pxe_callbacks.c */
|
|---|
| 433 | extern int pxe_in_call ( in_call_data_t *in_call_data, va_list params );
|
|---|
| 434 |
|
|---|
| 435 | /***************************************************************************
|
|---|
| 436 | External variables
|
|---|
| 437 | ***************************************************************************/
|
|---|
| 438 | /* main.c */
|
|---|
| 439 | extern jmp_buf restart_etherboot;
|
|---|
| 440 | extern int url_port;
|
|---|
| 441 | /* nic.c */
|
|---|
| 442 | extern struct rom_info rom;
|
|---|
| 443 | extern struct arptable_t arptable[MAX_ARP];
|
|---|
| 444 | extern struct igmptable_t igmptable[MAX_IGMP];
|
|---|
| 445 | extern char *hostname;
|
|---|
| 446 | extern int hostnamelen;
|
|---|
| 447 | extern unsigned char *addparam;
|
|---|
| 448 | extern int addparamlen;
|
|---|
| 449 | extern struct bootpd_t bootp_data;
|
|---|
| 450 | #ifdef VBOX
|
|---|
| 451 | extern struct bootp_t dhcp_cached_discover;
|
|---|
| 452 | extern struct bootpd_t dhcp_cached_reply;
|
|---|
| 453 | #endif /* VBOX */
|
|---|
| 454 | extern unsigned char *end_of_rfc1533;
|
|---|
| 455 | #ifdef IMAGE_FREEBSD
|
|---|
| 456 | extern int freebsd_howto;
|
|---|
| 457 | #define FREEBSD_KERNEL_ENV_SIZE 256
|
|---|
| 458 | extern char freebsd_kernel_env[FREEBSD_KERNEL_ENV_SIZE];
|
|---|
| 459 | #endif
|
|---|
| 460 |
|
|---|
| 461 | /* osloader.c */
|
|---|
| 462 |
|
|---|
| 463 | /* created by linker */
|
|---|
| 464 | extern char _virt_start[], _text[], _etext[], _text16[], _etext16[];
|
|---|
| 465 | extern char _data[], _edata[], _bss[], _ebss[], _end[];
|
|---|
| 466 |
|
|---|
| 467 |
|
|---|
| 468 | /*
|
|---|
| 469 | * Local variables:
|
|---|
| 470 | * c-basic-offset: 8
|
|---|
| 471 | * End:
|
|---|
| 472 | */
|
|---|
| 473 |
|
|---|
| 474 | #endif /* ETHERBOOT_H */
|
|---|
