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Add a hack to deal with hardware that misses the machine's serial number

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for whatever reason - just generate a MAC address from another environemt
variable, so that the admin can adjust it.
This commit is contained in:
martin 2008-02-25 22:49:20 +00:00
parent aa8d8c1a0f
commit bc6c1c587e
1 changed files with 44 additions and 3 deletions
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47
sys/arch/sgimips/mace/if_mec.c
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@ -1,4 +1,4 @@
/* $NetBSD: if_mec.c,v 1.17 2008/01/26 14:28:49 tsutsui Exp $ */
/* $NetBSD: if_mec.c,v 1.18 2008/02/25 22:49:20 martin Exp $ */
/*
* Copyright (c) 2004 Izumi Tsutsui.
@ -64,7 +64,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_mec.c,v 1.17 2008/01/26 14:28:49 tsutsui Exp $");
__KERNEL_RCSID(0, "$NetBSD: if_mec.c,v 1.18 2008/02/25 22:49:20 martin Exp $");
#include "opt_ddb.h"
#include "bpfilter.h"
@ -382,6 +382,7 @@ mec_attach(struct device *parent, struct device *self, void *aux)
struct mii_softc *child;
bus_dma_segment_t seg;
int i, err, rseg;
bool mac_is_fake;
sc->sc_st = maa->maa_st;
if (bus_space_subregion(sc->sc_st, maa->maa_sh,
@ -452,7 +453,43 @@ mec_attach(struct device *parent, struct device *self, void *aux)
printf(": unable to get MAC address!\n");
goto fail_4;
}
enaddr_aton(macaddr, sc->sc_enaddr);
/*
* On some machines the DS2502 chip storing the serial number/
* mac address is on the pci riser board - if this board is
* missing, ARCBIOS will not know a good ethernet address (but
* otherwise the machine will work fine).
*/
mac_is_fake = false;
if (strcmp(macaddr, "ff:ff:ff:ff:ff:ff") == 0) {
uint32_t ui = 0;
const char * netaddr =
ARCBIOS->GetEnvironmentVariable("netaddr");
/*
* Create a MAC address by abusing the "netaddr" env var
*/
sc->sc_enaddr[0] = 0xf2;
sc->sc_enaddr[1] = 0x0b;
sc->sc_enaddr[2] = 0xa4;
if (netaddr) {
mac_is_fake = true;
while (*netaddr) {
int v = 0;
while (*netaddr && *netaddr != '.') {
if (*netaddr >= '0' && *netaddr <= '9')
v = v*10 + (*netaddr - '0');
netaddr++;
}
ui <<= 8;
ui |= v;
if (*netaddr == '.')
netaddr++;
}
}
memcpy(sc->sc_enaddr+3, ((uint8_t *)&ui)+1, 3);
}
if (!mac_is_fake)
enaddr_aton(macaddr, sc->sc_enaddr);
/* set the Ethernet address */
address = 0;
@ -470,6 +507,10 @@ mec_attach(struct device *parent, struct device *self, void *aux)
printf(": MAC-110 Ethernet, rev %u\n",
(u_int)((command & MEC_MAC_REVISION) >> MEC_MAC_REVISION_SHIFT));
if (mac_is_fake)
printf("%s: could not get ethernet address from firmware"
" - generated one from the \"netaddr\" environment"
" variable\n", sc->sc_dev.dv_xname);
printf("%s: Ethernet address %s\n", sc->sc_dev.dv_xname,
ether_sprintf(sc->sc_enaddr));