patch-2.4.19 linux-2.4.19/arch/ia64/sn/fakeprom/main.c

• Lines: 126
• Date: Fri Aug 2 17:39:42 2002
• Orig file: linux-2.4.18/arch/ia64/sn/fakeprom/main.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.18/arch/ia64/sn/fakeprom/main.c linux-2.4.19/arch/ia64/sn/fakeprom/main.c
@@ -0,0 +1,125 @@
+/* 
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2000-2001 Silicon Graphics, Inc.  All rights reserved.
+ */
+
+
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <asm/bitops.h>
+
+extern void klgraph_init(void);
+void bedrock_init(int);
+void synergy_init(int, int);
+void sys_fw_init (const char *args, int arglen, int bsp);
+
+volatile int	bootmaster=0;		/* Used to pick bootmaster */
+volatile int	nasidmaster[128]={0};	/* Used to pick node/synergy masters */
+int		init_done=0;
+extern int	bsp_lid;
+
+#define get_bit(b,p)	(((*p)>>(b))&1)
+
+int
+fmain(int lid, int bsp) {
+	int	syn, nasid, cpu;
+
+	/*
+	 * First lets figure out who we are. This is done from the
+	 * LID passed to us.
+	 */
+
+#ifdef CONFIG_IA64_SGI_SN1
+	nasid = (lid>>24);
+	syn = (lid>>17)&1;
+	cpu = (lid>>16)&1;
+
+	/*
+	 * Now pick a synergy master to initialize synergy registers.
+	 */
+	if (test_and_set_bit(syn, &nasidmaster[nasid]) == 0) {
+		synergy_init(nasid, syn);
+		test_and_set_bit(syn+2, &nasidmaster[nasid]);
+	} else
+		while (get_bit(syn+2, &nasidmaster[nasid]) == 0);
+#else
+	nasid = (lid>>16)&0xfff;
+	cpu = (lid>>28)&3;
+	syn = 0;
+#endif
+	
+	/*
+	 * Now pick a nasid master to initialize Bedrock registers.
+	 */
+	if (test_and_set_bit(8, &nasidmaster[nasid]) == 0) {
+		bedrock_init(nasid);
+		test_and_set_bit(9, &nasidmaster[nasid]);
+	} else
+		while (get_bit(9, &nasidmaster[nasid]) == 0);
+	
+
+	/*
+	 * Now pick a BSP & finish init.
+	 */
+	if (test_and_set_bit(0, &bootmaster) == 0) {
+		sys_fw_init(0, 0, bsp);
+		test_and_set_bit(1, &bootmaster);
+	} else
+		while (get_bit(1, &bootmaster) == 0);
+
+	return (lid == bsp_lid);
+}
+
+
+void
+bedrock_init(int nasid)
+{
+	nasid = nasid;		/* to quiet gcc */
+#if 0
+	/*
+	 * Undef if you need fprom to generate a 1 node klgraph
+	 * information .. only works for 1 node for nasid 0.
+	 */
+	klgraph_init();
+#endif
+}
+
+
+void
+synergy_init(int nasid, int syn)
+{
+	long	*base;
+	long	off;
+
+	/*
+	 * Enable all FSB flashed interrupts.
+	 * ZZZ - I'd really like defines for this......
+	 */
+	base = (long*)0x80000e0000000000LL;		/* base of synergy regs */
+	for (off = 0x2a0; off < 0x2e0; off+=8)		/* offset for VEC_MASK_{0-3}_A/B */
+		*(base+off/8) = -1LL;
+
+	/*
+	 * Set the NASID in the FSB_CONFIG register.
+	 */
+	base = (long*)0x80000e0000000450LL;
+	*base = (long)((nasid<<16)|(syn<<9));
+}
+
+
+/* Why isnt there a bcopy/memcpy in lib64.a */
+
+void* 
+memcpy(void * dest, const void *src, size_t count)
+{
+	char *s, *se, *d;
+
+	for(d=dest, s=(char*)src, se=s+count; s<se; s++, d++)
+		*d = *s;
+	return dest;
+}