Re: SiS900 / Etherboot / Symantec Ghost-2.5

Hi
I don't know about Etherboot, but it it possible to use Ghost with
gPXE under certain circumstances.

- Depending on the image type you use, you have to prevent gPXE from
shutting down the UNDI stack.

- The NIC driver has to enable all relevant interrupt sources.

Unfortunately the current sis900 driver isn't enabling any interrupts
at all. I attached a small patch for the latest git source code of
gPXE to enable all interrupt sources for sis900. I don't have a sis900
card, so this patch is totally untested.
I uploaded a precompiled version at
http://etherboot.org/share/meteger/sis900.pxe

Please let us know if this changes anything for you.

Thomas

2009/9/8 Hubert Mercier <[email protected]>:
> Hi,
>
> I have been working for quite a long time on these buggy network chips,
> with unsufficient results. I explane :
>
> At the beginning, syslinux simply hangs the machine. PXE is buggy on the
> SiS900. So i use a workaround, chainloading etherboot (sis900.zpxe). It
> works quite well, and syslinux works just fine, as well as many other
> tools. But I can't manage to make Symantec Ghost work properly : I got i
> booting, but network menus of the interface are greyed... And I really
> have no more idea...
>
> If someone has a clue...
>
> Thanks !
>
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From 86ac350f6be048ce6eab3cc580887dbd18606aa8 Mon Sep 17 00:00:00 2001
From: Thomas Miletich <[email protected]>
Date: Tue, 8 Sep 2009 19:35:55 +0200
Subject: [PATCH] [sis900] enable interrupts for Symantec Ghost.

---
 src/drivers/net/sis900.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/src/drivers/net/sis900.c b/src/drivers/net/sis900.c
index 177cd65..da14a09 100644
--- a/src/drivers/net/sis900.c
+++ b/src/drivers/net/sis900.c
@@ -1183,8 +1183,12 @@ static int
 sis900_poll(struct nic *nic, int retrieve)
 {
     u32 rx_status = rxd[cur_rx].cmdsts;
+    u32 intr_status;
     int retstat = 0;
 
+     /* acknowledge interrupts by reading interrupt status register */
+    intr_status = inl(ioaddr + isr);
+
     if (sis900_debug > 2)
         printf("sis900_poll: cur_rx:%d, status:%X\n", cur_rx, 
 	       (unsigned int) rx_status);
@@ -1264,8 +1268,10 @@ sis900_irq(struct nic *nic __unused, irq_action_t action __unused)
 {
   switch ( action ) {
   case DISABLE :
+    outl(0, ioaddr + imr);
     break;
   case ENABLE :
+    outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
     break;
   case FORCE :
     break;
-- 
1.6.0.4