File: [local] / sys / arch / amd64 / stand / libsa / pxe.c (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:04:54 2008 UTC (16 years, 4 months ago) by nbrk
Branch: OPENBSD_4_2_BASE, MAIN
CVS Tags: jornada-partial-support-wip, HEAD Changes since 1.1: +0 -0 lines
Import of OpenBSD 4.2 release kernel tree with initial code to support
Jornada 720/728, StrongARM 1110-based handheld PC.
At this point kernel roots on NFS and boots into vfs_mountroot() and traps.
What is supported:
- glass console, Jornada framebuffer (jfb) works in 16bpp direct color mode
(needs some palette tweaks for non black/white/blue colors, i think)
- saic, SA11x0 interrupt controller (needs cleanup)
- sacom, SA11x0 UART (supported only as boot console for now)
- SA11x0 GPIO controller fully supported (but can't handle multiple interrupt
handlers on one gpio pin)
- sassp, SSP port on SA11x0 that attaches spibus
- Jornada microcontroller (jmcu) to control kbd, battery, etc throught
the SPI bus (wskbd attaches on jmcu, but not tested)
- tod functions seem work
- initial code for SA-1111 (chip companion) : this is TODO
Next important steps, i think:
- gpio and intc on sa1111
- pcmcia support for sa11x0 (and sa1111 help logic)
- REAL root on nfs when we have PCMCIA support (we may use any of supported pccard NICs)
- root on wd0! (using already supported PCMCIA-ATA)
|
/* $OpenBSD: pxe.c,v 1.5 2007/07/27 17:48:01 tom Exp $ */
/* $NetBSD: pxe.c,v 1.5 2003/03/11 18:29:00 drochner Exp $ */
/*
* Copyright 2001 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Jason R. Thorpe for Wasabi Systems, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed for the NetBSD Project by
* Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Copyright (c) 2000 Alfred Perlstein <alfred@freebsd.org>
* All rights reserved.
* Copyright (c) 2000 Paul Saab <ps@freebsd.org>
* All rights reserved.
* Copyright (c) 2000 John Baldwin <jhb@freebsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* Support for the Intel Preboot Execution Environment (PXE).
*
* PXE provides a UDP implementation as well as a UNDI network device
* driver. UNDI is much more complicated to use than PXE UDP, so we
* use PXE UDP as a cheap and easy way to get PXE support.
*/
#include <sys/param.h>
#include <sys/socket.h>
#ifdef _STANDALONE
#include <lib/libkern/libkern.h>
#else
#include <string.h>
#endif
#include <net/if.h>
#include <netinet/in.h>
#include <netinet/if_ether.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/ip_var.h>
#include <netinet/udp.h>
#include <netinet/udp_var.h>
#include <lib/libsa/stand.h>
#include <lib/libsa/net.h>
#include <lib/libsa/bootp.h>
#include <stand/boot/bootarg.h>
#include <machine/biosvar.h>
#include "pxeboot.h"
#include "pxe.h"
#include "pxe_netif.h"
void (*pxe_call)(u_int16_t);
void pxecall_bangpxe(u_int16_t); /* pxe_call.S */
void pxecall_pxenv(u_int16_t); /* pxe_call.S */
char pxe_command_buf[256];
BOOTPLAYER bootplayer;
struct in_addr servip; /* for tftp */ /* XXX init this */
extern char *bootmac; /* To pass to kernel */
/* static struct btinfo_netif bi_netif; */
/*****************************************************************************
* This section is a replacement for libsa/udp.c
*****************************************************************************/
/* Caller must leave room for ethernet, ip, and udp headers in front!! */
ssize_t
pxesendudp(struct iodesc *d, void *pkt, size_t len)
{
t_PXENV_UDP_WRITE *uw = (void *) pxe_command_buf;
uw->status = 0;
uw->ip = d->destip.s_addr;
uw->gw = gateip.s_addr;
uw->src_port = d->myport;
uw->dst_port = d->destport;
uw->buffer_size = len;
uw->buffer.segment = VTOPSEG(pkt);
uw->buffer.offset = VTOPOFF(pkt);
pxe_call(PXENV_UDP_WRITE);
if (uw->status != PXENV_STATUS_SUCCESS) {
/* XXX This happens a lot; it shouldn't. */
if (uw->status != PXENV_STATUS_FAILURE)
printf("sendudp: PXENV_UDP_WRITE failed: 0x%x\n",
uw->status);
return -1;
}
return len;
}
/*
* Receive a UDP packet and validate it for us.
* Caller leaves room for the headers (Ether, IP, UDP).
*/
ssize_t
pxereadudp(struct iodesc *d, void *pkt, size_t len, time_t tleft)
{
t_PXENV_UDP_READ *ur = (void *) pxe_command_buf;
struct udphdr *uh;
struct ip *ip;
uh = (struct udphdr *)pkt - 1;
ip = (struct ip *)uh - 1;
bzero(ur, sizeof(*ur));
ur->dest_ip = d->myip.s_addr;
ur->d_port = d->myport;
ur->buffer_size = len;
ur->buffer.segment = VTOPSEG(pkt);
ur->buffer.offset = VTOPOFF(pkt);
/* XXX Timeout unused. */
pxe_call(PXENV_UDP_READ);
if (ur->status != PXENV_STATUS_SUCCESS) {
/* XXX This happens a lot; it shouldn't. */
if (ur->status != PXENV_STATUS_FAILURE)
printf("readudp: PXENV_UDP_READ_failed: 0x%0x\n",
ur->status);
return -1;
}
ip->ip_src.s_addr = ur->src_ip;
uh->uh_sport = ur->s_port;
uh->uh_dport = d->myport;
return ur->buffer_size;
}
/*
* netif layer:
* open, close, shutdown: called from dev_net.c
* socktodesc: called by network protocol modules
*
* We only allow one open socket.
*/
static int pxe_inited;
static struct iodesc desc;
int
pxe_netif_open()
{
t_PXENV_UDP_OPEN *uo = (void *) pxe_command_buf;
#ifdef NETIF_DEBUG
printf("pxe_netif_open()\n");
#endif
if (!pxe_inited) {
if (pxe_init(0) != 0)
return -1;
pxe_inited = 1;
}
/* BI_ADD(&bi_netif, BTINFO_NETIF, sizeof(bi_netif)); */
bzero(uo, sizeof(*uo));
uo->src_ip = bootplayer.yip;
pxe_call(PXENV_UDP_OPEN);
if (uo->status != PXENV_STATUS_SUCCESS) {
printf("\npxe_netif_open: PXENV_UDP_OPEN failed: 0x%x\n",
uo->status);
return -1;
}
bcopy(bootplayer.CAddr, desc.myea, ETHER_ADDR_LEN);
bootmac = bootplayer.CAddr;
/*
* Since the PXE BIOS has already done DHCP, make sure we
* don't reuse any of its transaction IDs.
*/
desc.xid = bootplayer.ident;
return 0;
}
void
pxe_netif_close(sock)
int sock;
{
t_PXENV_UDP_CLOSE *uc = (void *) pxe_command_buf;
#ifdef NETIF_DEBUG
if (sock != 0)
printf("pxe_netif_close: sock=%d\n", sock);
#endif
uc->status = 0;
pxe_call(PXENV_UDP_CLOSE);
if (uc->status != PXENV_STATUS_SUCCESS)
printf("pxe_netif_end: PXENV_UDP_CLOSE failed: 0x%x\n",
uc->status);
}
void
pxe_netif_shutdown()
{
#ifdef NETIF_DEBUG
printf("pxe_netif_shutdown()\n");
#endif
pxe_shutdown();
}
struct iodesc *
pxesocktodesc(sock)
int sock;
{
#ifdef NETIF_DEBUG
if (sock != 0)
return 0;
else
#endif
return &desc;
}
/*****************************************************************************
* PXE initialization and support routines
*****************************************************************************/
u_int16_t pxe_command_buf_seg;
u_int16_t pxe_command_buf_off;
extern u_int16_t bangpxe_off, bangpxe_seg;
extern u_int16_t pxenv_off, pxenv_seg;
/* static struct btinfo_netif bi_netif; */
void
pxeprobe(void)
{
if (!pxe_inited) {
if (pxe_init(1) == 0) {
pxe_inited = 1;
}
}
}
int
pxe_init(int quiet)
{
t_PXENV_GET_CACHED_INFO *gci = (void *) pxe_command_buf;
pxenv_t *pxenv;
pxe_t *pxe;
char *cp;
int i;
u_int8_t cksum, *ucp;
/*
* Checking for the presence of PXE is a machine-dependent
* operation. On the IA-32, this can be done two ways:
*
* Int 0x1a function 0x5650
*
* Scan memory for the !PXE or PXENV+ signatures
*
* We do the latter, since the Int method returns a pointer
* to a deprecated structure (PXENV+).
*/
pxenv = NULL;
pxe = NULL;
for (cp = (char *)0xa0000; cp > (char *)0x10000; cp -= 2) {
if (pxenv == NULL) {
pxenv = (pxenv_t *)cp;
if (memcmp(pxenv->Signature, S_SIZE("PXENV+")) != 0)
pxenv = NULL;
else {
for (i = 0, ucp = (u_int8_t *)cp, cksum = 0;
i < pxenv->Length; i++)
cksum += ucp[i];
if (cksum != 0) {
printf("\npxe_init: bad cksum (0x%x) "
"for PXENV+ at 0x%lx\n", cksum,
(u_long) cp);
pxenv = NULL;
}
}
}
if (pxe == NULL) {
pxe = (pxe_t *)cp;
if (memcmp(pxe->Signature, S_SIZE("!PXE")) != 0)
pxe = NULL;
else {
for (i = 0, ucp = (u_int8_t *)cp, cksum = 0;
i < pxe->StructLength; i++)
cksum += ucp[i];
if (cksum != 0) {
printf("pxe_init: bad cksum (0x%x) "
"for !PXE at 0x%lx\n", cksum,
(u_long) cp);
pxe = NULL;
}
}
}
if (pxe != NULL && pxenv != NULL)
break;
}
if (pxe == NULL && pxenv == NULL) {
if (!quiet) printf("pxe_init: No PXE BIOS found.\n");
return 1;
}
if (pxenv == NULL) {
/* assert(pxe != NULL); */
printf(quiet ? " pxe!" : "PXE present\n");
} else { /* pxenv != NULL */
int bang = 0;
if (pxenv->Version >= 0x0201 && pxe != NULL) {
/* 2.1 or greater -- don't use PXENV+ */
bang = 1;
}
if (quiet) {
printf(" pxe%c[%d.%d]",
(bang ? '!' : '+'),
(pxenv->Version >> 8) & 0xff,
pxenv->Version & 0xff);
} else {
printf("PXE BIOS Version %d.%d\n",
(pxenv->Version >> 8) & 0xff,
pxenv->Version & 0xff);
}
if (bang) {
pxenv = NULL;
}
}
if (pxenv == NULL) {
pxe_call = pxecall_bangpxe;
bangpxe_off = pxe->EntryPointSP.offset;
bangpxe_seg = pxe->EntryPointSP.segment;
} else {
pxe_call = pxecall_pxenv;
pxenv_off = pxenv->RMEntry.offset;
pxenv_seg = pxenv->RMEntry.segment;
}
/*
* Pre-compute the segment/offset of the pxe_command_buf
* to make things nicer in the low-level calling glue.
*/
pxe_command_buf_seg = VTOPSEG(pxe_command_buf);
pxe_command_buf_off = VTOPOFF(pxe_command_buf);
/*
* Get the cached info from the server's Discovery reply packet.
*/
bzero(gci, sizeof(*gci));
gci->PacketType = PXENV_PACKET_TYPE_CACHED_REPLY;
pxe_call(PXENV_GET_CACHED_INFO);
if (gci->Status != PXENV_STATUS_SUCCESS) {
printf("\npxeinfo: PXENV_GET_CACHED_INFO failed: 0x%x\n",
gci->Status);
return 1;
}
memcpy(&bootplayer,
SEGOFF2FLAT(gci->Buffer.segment, gci->Buffer.offset),
gci->BufferSize);
bcopy(&bootplayer.yip, &myip.s_addr, sizeof(myip.s_addr));
bcopy(&bootplayer.sip, &servip.s_addr, sizeof(servip.s_addr));
/* Compute our "natural" netmask. */
if (IN_CLASSA(myip.s_addr))
netmask = IN_CLASSA_NET;
else if (IN_CLASSB(myip.s_addr))
netmask = IN_CLASSB_NET;
else
netmask = IN_CLASSC_NET;
return 0;
}
void
pxeinfo(void)
{
u_int8_t *p;
#ifdef PXE_DEBUG
t_PXENV_UNDI_GET_NIC_TYPE *gnt = (void *) pxe_command_buf;
#endif
printf(" mac %s", ether_sprintf(bootplayer.CAddr));
p = (u_int8_t *)&myip.s_addr;
printf(", ip %d.%d.%d.%d", p[0], p[1], p[2], p[3]);
p = (u_int8_t *)&servip.s_addr;
printf(", server %d.%d.%d.%d", p[0], p[1], p[2], p[3]);
#ifdef PXE_DEBUG
/*
* Get network interface information.
*/
bzero(gnt, sizeof(*gnt));
pxe_call(PXENV_UNDI_GET_NIC_TYPE);
if (gnt->Status != PXENV_STATUS_SUCCESS) {
printf("\npxeinfo: PXENV_UNDI_GET_NIC_TYPE failed: 0x%x\n",
gnt->Status);
return;
}
switch (gnt->NicType) {
case PCI_NIC:
case CardBus_NIC:
/* strncpy(bi_netif.ifname, "pxe", sizeof(bi_netif.ifname)); */
/* bi_netif.bus = BI_BUS_PCI; */
/* bi_netif.addr.tag = gnt->info.pci.BusDevFunc; */
printf("\nPXE: Using %s device at bus %d device %d function %d\n",
gnt->NicType == PCI_NIC ? "PCI" : "CardBus",
(gnt->info.pci.BusDevFunc >> 8) & 0xff,
(gnt->info.pci.BusDevFunc >> 3) & 0x1f,
gnt->info.pci.BusDevFunc & 0x7);
break;
case PnP_NIC:
/* XXX Make bootinfo work with this. */
printf("\nPXE: Using PnP device at 0x%x\n",
gnt->info.pnp.CardSelNum);
}
#endif
}
void
pxe_shutdown(void)
{
int try;
t_PXENV_UNLOAD_STACK *unload = (void *) pxe_command_buf;
t_PXENV_UNDI_SHUTDOWN *shutdown = (void *) pxe_command_buf;
#ifdef PXE_DEBUG
t_PXENV_UDP_CLOSE *close = (void *) pxe_command_buf;
#endif
if (pxe_call == NULL)
return;
/* Close any open UDP connections. Ignore return value. */
pxe_call(PXENV_UDP_CLOSE);
#ifdef PXE_DEBUG
printf("pxe_shutdown: PXENV_UDP_CLOSE returned 0x%x\n", close->status);
#endif
/* Sometimes PXENV_UNDI_SHUTDOWN doesn't work at first */
for (try = 3; try > 0; try--) {
pxe_call(PXENV_UNDI_SHUTDOWN);
if (shutdown->Status == PXENV_STATUS_SUCCESS)
break;
printf("pxe_shutdown: PXENV_UNDI_SHUTDOWN failed: 0x%x\n",
shutdown->Status);
if (try != 1)
sleep(1);
}
/* Have multiple attempts at PXENV_UNLOAD_STACK, too */
for (try = 3; try > 0; try--) {
pxe_call(PXENV_UNLOAD_STACK);
if (unload->Status == PXENV_STATUS_SUCCESS)
break;
printf("pxe_shutdown: PXENV_UNLOAD_STACK failed: 0x%x\n",
unload->Status);
if (try != 1)
sleep(1);
}
}