Use !PXE api over PXENV+ api.
Magic trampoline by: peter (at 4am and after a good whipping at airhockey) Do a better job of returning and detecting errors.
This commit is contained in:
Paul Saab
parent
d3d805e606
commit
e938899cc3
@ -8,7 +8,7 @@ INTERNALSTATICLIB= true
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SRCS= aout_freebsd.c biosdisk.c biosmem.c biospnp.c biospci.c \
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bootinfo.c comconsole.c devicename.c elf_freebsd.c gatea20.c \
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i386_copy.c i386_module.c time.c vidconsole.c
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i386_copy.c i386_module.c time.c vidconsole.c pxetramp.s
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CFLAGS+= -I${.CURDIR}/../../common -I${.CURDIR}/../btx/lib \
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-I${.CURDIR}/../../.. -I.
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@ -61,7 +61,8 @@
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static char scratch_buffer[PXE_BUFFER_SIZE];
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static char data_buffer[PXE_BUFFER_SIZE];
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static pxenv_t *pxenv_p = NULL; /* PXENV+ */
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static pxenv_t *pxenv_p = NULL; /* PXENV+ */
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static pxe_t *pxe_p = NULL; /* !PXE */
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static BOOTPLAYER bootplayer; /* PXE Cached information. */
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static int debug = 0;
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@ -77,6 +78,7 @@ static int pxe_strategy(void *devdata, int flag, daddr_t dblk,
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static int pxe_open(struct open_file *f, ...);
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static int pxe_close(struct open_file *f);
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static void pxe_print(int verbose);
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static void pxe_cleanup(void);
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static void pxe_perror(int error);
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static int pxe_netif_match(struct netif *nif, void *machdep_hint);
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@ -89,7 +91,10 @@ static void pxe_netif_end(struct netif *nif);
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extern struct netif_stats pxe_st[];
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extern struct in_addr rootip;
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extern char rootpath[FNAME_SIZE];
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extern char rootpath[FNAME_SIZE];
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extern u_int16_t __pxeseg;
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extern u_int16_t __pxeoff;
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extern void __h0h0magic(void);
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struct netif_dif pxe_ifs[] = {
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/* dif_unit dif_nsel dif_stats dif_private */
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@ -176,10 +181,32 @@ pxe_init(void)
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pxenv_p = NULL;
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return (0);
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}
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printf("\nPXENV+ version %d.%d, real mode entry point @%04x:%04x\n",
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if (pxenv_p->Version < 0x0201) {
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printf("PXENV+ is not supported.\n");
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return (0);
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}
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pxe_p = (pxe_t *)PTOV(pxenv_p->PXEPtr.segment * 16 +
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pxenv_p->PXEPtr.offset);
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if (bcmp((void *)pxe_p->Signature, S_SIZE("!PXE")))
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return(0);
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checksum = 0;
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checkptr = (uint8_t *)pxe_p;
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for (counter = 0; counter < pxe_p->StructLength; counter++)
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checksum += *checkptr++;
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if (checksum != 0) {
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printf("!PXE structure failed checksum. %x\n", checksum);
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return(0);
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}
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printf("\n!PXE version %d.%d, real mode entry point @%04x:%04x\n",
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(uint8_t) (pxenv_p->Version >> 8),
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(uint8_t) (pxenv_p->Version & 0xFF),
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pxenv_p->RMEntry.segment, pxenv_p->RMEntry.offset);
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pxe_p->EntryPointSP.segment, pxe_p->EntryPointSP.offset);
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gci_p = (t_PXENV_GET_CACHED_INFO *) scratch_buffer;
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bzero(gci_p, sizeof(*gci_p));
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@ -290,6 +317,23 @@ pxe_print(int verbose)
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return;
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}
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static void
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pxe_cleanup(void)
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{
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t_PXENV_UNLOAD_STACK *unload_stack_p =
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(t_PXENV_UNLOAD_STACK *)scratch_buffer;
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t_PXENV_UNDI_SHUTDOWN *undi_shutdown_p =
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(t_PXENV_UNDI_SHUTDOWN *)scratch_buffer;
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pxe_call(PXENV_UNLOAD_STACK);
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if (unload_stack_p->Status != 0)
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panic("pxe_cleanup: UNLOAD_STACK failed");
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pxe_call(PXENV_UNDI_SHUTDOWN);
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if (undi_shutdown_p->Status != 0)
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panic("pxe_cleanup: UNDI_SHUTDOWN failed");
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printf("All cleaned up!\n");
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}
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void
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pxe_perror(int err)
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@ -302,15 +346,17 @@ pxe_call(int func)
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{
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bzero(&v86, sizeof(v86));
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bzero(data_buffer, sizeof(data_buffer));
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v86.ctl = V86_ADDR | V86_CALLF | V86_FLAGS;
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/* high 16 == segment, low 16 == offset, shift and or */
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v86.addr =
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((uint32_t)pxenv_p->RMEntry.segment << 16) | pxenv_p->RMEntry.offset;
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v86.es = VTOPSEG(scratch_buffer);
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v86.edi = VTOPOFF(scratch_buffer);
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v86.ebx = func;
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__pxeseg = pxe_p->EntryPointSP.segment;
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__pxeoff = pxe_p->EntryPointSP.offset;
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v86.ctl = V86_ADDR | V86_CALLF | V86_FLAGS;
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v86.edx = VTOPSEG(scratch_buffer);
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v86.eax = VTOPOFF(scratch_buffer);
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v86.addr = (VTOPSEG(__h0h0magic) << 16) | VTOPOFF(__h0h0magic);
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v86.ebx = func;
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v86int();
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v86.ctl = V86_FLAGS;
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v86.ctl = V86_FLAGS;
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}
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@ -338,8 +384,10 @@ pxe_netif_probe(struct netif *nif, void *machdep_hint)
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udpopen_p->src_ip = bootplayer.yip;
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pxe_call(PXENV_UDP_OPEN);
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if (udpopen_p->status != 0)
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if (udpopen_p->status != 0) {
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printf("pxe_netif_probe: failed %x\n", udpopen_p->status);
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return -1;
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}
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return 0;
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}
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@ -386,11 +434,14 @@ sendudp(struct iodesc *h, void *pkt, size_t len)
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pxe_call(PXENV_UDP_WRITE);
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#if 0
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/* XXX - I dont know why we need this. */
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delay(1000);
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if (udpwrite_p->status != 0)
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#endif
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if (udpwrite_p->status != 0) {
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printf("sendudp failed %x\n", udpwrite_p->status);
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return -1;
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}
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return len;
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}
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@ -411,10 +462,16 @@ readudp(struct iodesc *h, void *pkt, size_t len, time_t timeout)
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pxe_call(PXENV_UDP_READ);
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#if 0
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/* XXX - I dont know why we need this. */
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delay(1000);
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if (udpread_p->status > 1)
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printf("readudp failed %x\n", udpread_p->status);
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#endif
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if (udpread_p->status != 0) {
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/* XXX: This happens a lot. It shouldn't. */
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if (udpread_p->status != 1)
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printf("readudp failed %x\n", udpread_p->status);
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return -1;
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}
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bcopy(data_buffer, pkt, udpread_p->buffer_size);
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uh->uh_sport = udpread_p->s_port;
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return udpread_p->buffer_size;
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31
sys/boot/i386/libi386/pxetramp.s
Normal file
31
sys/boot/i386/libi386/pxetramp.s
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@ -0,0 +1,31 @@
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#
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# Copyright (c) 2000 Peter Wemm
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms are freely
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# permitted provided that the above copyright notice and this
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# paragraph and the following disclaimer are duplicated in all
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# such forms.
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#
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# This software is provided "AS IS" and without any express or
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# implied warranties, including, without limitation, the implied
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# warranties of merchantability and fitness for a particular
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# purpose.
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#
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# $FreeBSD$
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# ph33r this
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.globl __h0h0magic, __pxeseg, __pxeoff
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.code16
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.p2align 4,0x90
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__h0h0magic:
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push %dx # seg:data
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push %ax # off:data
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push %bx # int16 func
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.byte 0x9a # far call
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__pxeoff: .word 0x0000 # offset
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__pxeseg: .word 0x0000 # segment
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add $6, %sp # restore stack
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.byte 0xcb # to vm86int
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