patch-2.2.4 linux/arch/sparc64/kernel/head.S

• Lines: 75
• Date: Wed Mar 10 16:53:37 1999
• Orig file: v2.2.3/linux/arch/sparc64/kernel/head.S
• Orig date: Sun Nov 8 14:02:46 1998

diff -u --recursive --new-file v2.2.3/linux/arch/sparc64/kernel/head.S linux/arch/sparc64/kernel/head.S
@@ -1,4 +1,4 @@
-/* $Id: head.S,v 1.54 1998/10/06 20:48:30 ecd Exp $
+/* $Id: head.S,v 1.59 1999/01/06 01:37:35 davem Exp $
  * head.S: Initial boot code for the Sparc64 port of Linux.
  *
  * Copyright (C) 1996,1997 David S. Miller (davem@caip.rutgers.edu)
@@ -7,6 +7,7 @@
  * Copyright (C) 1997 Miguel de Icaza (miguel@nuclecu.unam.mx)
  */
 
+#include <linux/config.h>
 #include <linux/version.h>
 #include <linux/errno.h>
 #include <asm/asm_offsets.h>
@@ -330,7 +331,7 @@
 /* IMPORTANT NOTE: Whenever making changes here, check
  * trampoline.S as well. -jj */
 	.globl	setup_tba
-setup_tba:
+setup_tba:	/* i0 = is_starfire */
 	save	%sp, -160, %sp
 
 	rdpr	%tba, %g7
@@ -376,9 +377,34 @@
 
 	/* Setup Interrupt globals */
 	wrpr	%o1, (PSTATE_IG|PSTATE_IE), %pstate
-	sethi	%hi(ivector_to_mask), %g5
-	or	%g5, %lo(ivector_to_mask), %g1  /* IVECTOR table */
-	mov	0x40, %g2			/* INTR data 0 register */
+#ifndef __SMP__
+	sethi	%hi(__up_workvec), %g5
+	or	%g5, %lo(__up_workvec), %g1
+#else
+	/* By definition of where we are, this is boot_cpu. */
+	sethi	%hi(cpu_data), %g5
+	or	%g5, %lo(cpu_data), %g5
+
+	brz,pt	%i0, not_starfire
+	 sethi	%hi(0x1fff4000), %g1
+	or	%g1, %lo(0x1fff4000), %g1
+	sllx	%g1, 12, %g1
+	or	%g1, 0xd0, %g1
+	lduwa	[%g1] ASI_PHYS_BYPASS_EC_E, %g1
+	b,pt	%xcc, set_worklist
+	 nop
+
+not_starfire:
+	ldxa	[%g0] ASI_UPA_CONFIG, %g1
+	srlx	%g1, 17, %g1
+	and	%g1, 0x1f, %g1
+
+	/* In theory this is: &(cpu_data[boot_cpu_id].irq_worklists[0]) */
+set_worklist:
+	sllx	%g1, 7, %g1
+	add	%g5, %g1, %g5
+	add	%g5, 64, %g1
+#endif
 
 	/* Kill PROM timer */
 	wr	%g0, 0, %tick_cmpr
@@ -407,6 +433,13 @@
 	.globl	empty_bad_page
 empty_bad_page:
 	.skip	0x2000
+
+#ifdef CONFIG_SBUS
+/* This is just a hack to fool make depend config.h discovering
+   strategy: As the .S files below need config.h, but
+   make depend does not find it for them, we include config.h
+   in head.S */
+#endif
 
 ! 0x0000000000408000