Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next-2.6: (98 commits)
  sparc: move select of ARCH_SUPPORTS_MSI
  sparc: drop SUN_IO
  sparc: unify sections.h
  sparc: use .data.init_task section for init_thread_union
  sparc: fix array overrun check in of_device_64.c
  sparc: unify module.c
  sparc64: prepare module_64.c for unification
  sparc64: use bit neutral Elf symbols
  sparc: unify module.h
  sparc: introduce CONFIG_BITS
  sparc: fix hardirq.h removal fallout
  sparc64: do not export pus_fs_struct
  sparc: use sparc64 version of scatterlist.h
  sparc: Commonize memcmp assembler.
  sparc: Unify strlen assembler.
  sparc: Add asm/asm.h
  sparc: Kill memcmp_32.S code which has been ifdef'd out for centuries.
  sparc: replace for_each_cpu_mask_nr with for_each_cpu
  sparc: fix sparse warnings in irq_32.c
  sparc: add include guards to kernel.h
  ...

1 files changed, 162 insertions, 0 deletions

diff --git a/arch/sparc/kernel/trampoline_32.S b/arch/sparc/kernel/trampoline_32.S
new file mode 100644
index 00000000000..5e235c52d66
--- /dev/null
+++ b/arch/sparc/kernel/trampoline_32.S
@@ -0,0 +1,162 @@
+/*
+ * trampoline.S: SMP cpu boot-up trampoline code.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <linux/init.h>
+#include <asm/head.h>
+#include <asm/psr.h>
+#include <asm/page.h>
+#include <asm/asi.h>
+#include <asm/ptrace.h>
+#include <asm/vaddrs.h>
+#include <asm/contregs.h>
+#include <asm/thread_info.h>
+
+	.globl sun4m_cpu_startup, __smp4m_processor_id
+	.globl sun4d_cpu_startup, __smp4d_processor_id
+
+	__CPUINIT
+	.align 4
+
+/* When we start up a cpu for the first time it enters this routine.
+ * This initializes the chip from whatever state the prom left it
+ * in and sets PIL in %psr to 15, no irqs.
+ */
+
+sun4m_cpu_startup:
+cpu1_startup:
+	sethi	%hi(trapbase_cpu1), %g3
+	b	1f
+	 or	%g3, %lo(trapbase_cpu1), %g3
+
+cpu2_startup:
+	sethi	%hi(trapbase_cpu2), %g3
+	b	1f
+	 or	%g3, %lo(trapbase_cpu2), %g3
+
+cpu3_startup:
+	sethi	%hi(trapbase_cpu3), %g3
+	b	1f
+	 or	%g3, %lo(trapbase_cpu3), %g3
+
+1:
+	/* Set up a sane %psr -- PIL<0xf> S<0x1> PS<0x1> CWP<0x0> */
+	set	(PSR_PIL | PSR_S | PSR_PS), %g1
+	wr	%g1, 0x0, %psr		! traps off though
+	WRITE_PAUSE
+
+	/* Our %wim is one behind CWP */
+	mov	2, %g1
+	wr	%g1, 0x0, %wim
+	WRITE_PAUSE
+
+	/* This identifies "this cpu". */
+	wr	%g3, 0x0, %tbr
+	WRITE_PAUSE
+
+	/* Give ourselves a stack and curptr. */
+	set	current_set, %g5
+	srl	%g3, 10, %g4
+	and	%g4, 0xc, %g4
+	ld	[%g5 + %g4], %g6
+
+	sethi	%hi(THREAD_SIZE - STACKFRAME_SZ), %sp
+	or	%sp, %lo(THREAD_SIZE - STACKFRAME_SZ), %sp
+	add	%g6, %sp, %sp
+
+	/* Turn on traps (PSR_ET). */
+	rd	%psr, %g1
+	wr	%g1, PSR_ET, %psr	! traps on
+	WRITE_PAUSE
+
+	/* Init our caches, etc. */
+	set	poke_srmmu, %g5
+	ld	[%g5], %g5
+	call	%g5
+	 nop
+
+	/* Start this processor. */
+	call	smp4m_callin
+	 nop
+
+	b,a	smp_do_cpu_idle
+
+	.text
+	.align	4
+
+smp_do_cpu_idle:
+	call	cpu_idle
+	 mov	0, %o0
+
+	call	cpu_panic
+	 nop
+
+__smp4m_processor_id:
+	rd	%tbr, %g2
+	srl	%g2, 12, %g2
+	and	%g2, 3, %g2
+	retl
+	 mov	%g1, %o7
+
+__smp4d_processor_id:
+	lda	[%g0] ASI_M_VIKING_TMP1, %g2
+	retl
+	 mov	%g1, %o7
+
+/* CPUID in bootbus can be found at PA 0xff0140000 */
+#define SUN4D_BOOTBUS_CPUID	0xf0140000
+
+	__CPUINIT
+	.align	4
+
+sun4d_cpu_startup:
+	/* Set up a sane %psr -- PIL<0xf> S<0x1> PS<0x1> CWP<0x0> */
+	set	(PSR_PIL | PSR_S | PSR_PS), %g1
+	wr	%g1, 0x0, %psr		! traps off though
+	WRITE_PAUSE
+
+	/* Our %wim is one behind CWP */
+	mov	2, %g1
+	wr	%g1, 0x0, %wim
+	WRITE_PAUSE
+
+	/* Set tbr - we use just one trap table. */
+	set	trapbase, %g1
+	wr	%g1, 0x0, %tbr
+	WRITE_PAUSE
+
+	/* Get our CPU id out of bootbus */
+	set	SUN4D_BOOTBUS_CPUID, %g3
+	lduba	[%g3] ASI_M_CTL, %g3
+	and	%g3, 0xf8, %g3
+	srl	%g3, 3, %g1
+	sta	%g1, [%g0] ASI_M_VIKING_TMP1
+
+	/* Give ourselves a stack and curptr. */
+	set	current_set, %g5
+	srl	%g3, 1, %g4
+	ld	[%g5 + %g4], %g6
+
+	sethi	%hi(THREAD_SIZE - STACKFRAME_SZ), %sp
+	or	%sp, %lo(THREAD_SIZE - STACKFRAME_SZ), %sp
+	add	%g6, %sp, %sp
+
+	/* Turn on traps (PSR_ET). */
+	rd	%psr, %g1
+	wr	%g1, PSR_ET, %psr	! traps on
+	WRITE_PAUSE
+
+	/* Init our caches, etc. */
+	set	poke_srmmu, %g5
+	ld	[%g5], %g5
+	call	%g5
+	 nop
+
+	/* Start this processor. */
+	call	smp4d_callin
+	 nop
+
+	b,a	smp_do_cpu_idle