This adds cpu_setup functionality for ppc44x platform.
Low level cpu-spefic initialization routines should be
placed in cpu_setup_44x.S and a callback should be
added to cputable. The cpu_setup is invoked
by identify_cpu() function at early init.
Signed-off-by: Valentine Barshak <[EMAIL PROTECTED]>
---
arch/powerpc/kernel/Makefile | 1 +
arch/powerpc/kernel/cpu_setup_44x.S | 19 +++++++++++++++++++
arch/powerpc/kernel/cputable.c | 13 +++++++------
3 files changed, 27 insertions(+), 6 deletions(-)
diff -ruN linux-2.6.orig/arch/powerpc/kernel/cpu_setup_44x.S
linux-2.6/arch/powerpc/kernel/cpu_setup_44x.S
--- linux-2.6.orig/arch/powerpc/kernel/cpu_setup_44x.S 1970-01-01
03:00:00.000000000 +0300
+++ linux-2.6/arch/powerpc/kernel/cpu_setup_44x.S 2007-09-21
17:04:20.000000000 +0400
@@ -0,0 +1,19 @@
+/*
+ * This file contains low level CPU setup functions.
+ * Valentine Barshak <[EMAIL PROTECTED]>
+ * MontaVista Software, Inc (c) 2007
+ *
+ * Based on cpu_setup_6xx code by
+ * Benjamin Herrenschmidt <[EMAIL PROTECTED]>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ */
+
+#include <asm/processor.h>
+#include <asm/cputable.h>
+#include <asm/ppc_asm.h>
+
diff -ruN linux-2.6.orig/arch/powerpc/kernel/cputable.c
linux-2.6/arch/powerpc/kernel/cputable.c
--- linux-2.6.orig/arch/powerpc/kernel/cputable.c 2007-09-21
14:56:40.000000000 +0400
+++ linux-2.6/arch/powerpc/kernel/cputable.c 2007-09-21 17:04:50.000000000
+0400
@@ -1319,17 +1319,18 @@
for (i = 0; i < ARRAY_SIZE(cpu_specs); i++,s++)
if ((pvr & s->pvr_mask) == s->pvr_value) {
*cur = cpu_specs + i;
-#ifdef CONFIG_PPC64
- /* ppc64 expects identify_cpu to also call setup_cpu
- * for that processor. I will consolidate that at a
- * later time, for now, just use our friend #ifdef.
+#if defined(CONFIG_PPC64) || defined(CONFIG_BOOKE)
+ /* ppc64 and booke expect identify_cpu to also call
+ * setup_cpu for that processor. I will consolidate
+ * that at a later time, for now, just use #ifdef.
* we also don't need to PTRRELOC the function pointer
- * on ppc64 as we are running at 0 in real mode.
+ * on ppc64 and booke as we are running at 0 in real
+ * mode on ppc64 and reloc_offset is always 0 on booke.
*/
if (s->cpu_setup) {
s->cpu_setup(offset, s);
}
-#endif /* CONFIG_PPC64 */
+#endif /* CONFIG_PPC64 || CONFIG_BOOKE */
return s;
}
BUG();
diff -ruN linux-2.6.orig/arch/powerpc/kernel/Makefile
linux-2.6/arch/powerpc/kernel/Makefile
--- linux-2.6.orig/arch/powerpc/kernel/Makefile 2007-09-21 14:56:40.000000000
+0400
+++ linux-2.6/arch/powerpc/kernel/Makefile 2007-09-21 17:04:20.000000000
+0400
@@ -56,6 +56,7 @@
udbg.o misc.o io.o
obj-$(CONFIG_PPC32) += entry_32.o setup_32.o misc_32.o
obj-$(CONFIG_PPC64) += misc_64.o dma_64.o iommu.o
+obj-$(CONFIG_44x) += cpu_setup_44x.o
obj-$(CONFIG_PPC_MULTIPLATFORM) += prom_init.o
obj-$(CONFIG_MODULES) += ppc_ksyms.o
obj-$(CONFIG_BOOTX_TEXT) += btext.o
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