Move Origin crapola into a machine-specific header file.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 52 insertions, 0 deletions

diff --git a/include/asm-mips/mach-ip27/kernel-entry-init.h b/include/asm-mips/mach-ip27/kernel-entry-init.h
new file mode 100644
index 000000000000..c1a10314b317
--- /dev/null
+++ b/include/asm-mips/mach-ip27/kernel-entry-init.h
@@ -0,0 +1,52 @@
+/*
+ * 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 Silicon Graphics, Inc.
+ * Copyright (C) 2005 Ralf Baechle <ralf@linux-mips.org>
+ */
+#ifndef __ASM_MACH_IP27_KERNEL_ENTRY_H
+#define __ASM_MACH_IP27_KERNEL_ENTRY_H
+
+#include <asm/sn/addrs.h>
+#include <asm/sn/sn0/hubni.h>
+#include <asm/sn/klkernvars.h>
+
+/*
+ * Returns the local nasid into res.
+ */
+        .macro GET_NASID_ASM res
+        dli     \res, LOCAL_HUB_ADDR(NI_STATUS_REV_ID)
+        ld      \res, (\res)
+        and     \res, NSRI_NODEID_MASK
+        dsrl    \res, NSRI_NODEID_SHFT
+        .endm
+
+/*
+ * Intentionally empty macro, used in head.S. Override in
+ * arch/mips/mach-xxx/kernel-entry-init.h when necessary.
+ */
+        .macro  kernel_entry_setup
+        GET_NASID_ASM   t1
+        move            t2, t1                  # text and data are here
+        MAPPED_KERNEL_SETUP_TLB
+        .endm
+
+/*
+ * Do SMP slave processor setup necessary before we can savely execute C code.
+ */
+        .macro  smp_slave_setup
+        GET_NASID_ASM   t1
+        dli     t0, KLDIR_OFFSET + (KLI_KERN_VARS * KLDIR_ENT_SIZE) + \
+                    KLDIR_OFF_POINTER + CAC_BASE
+        dsll    t1, NASID_SHFT
+        or      t0, t0, t1
+        ld      t0, 0(t0)                       # t0 points to kern_vars struct
+        lh      t1, KV_RO_NASID_OFFSET(t0)
+        lh      t2, KV_RW_NASID_OFFSET(t0)
+        MAPPED_KERNEL_SETUP_TLB
+        ARC64_TWIDDLE_PC
+        .endm
+
+#endif /* __ASM_MACH_IP27_KERNEL_ENTRY_H */