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authorValentine Barshak <vbarshak@ru.mvista.com>2007-09-22 00:44:38 +1000
committerJosh Boyer <jwboyer@linux.vnet.ibm.com>2007-10-03 07:20:17 -0500
commit84e3ad5b91ed51db7513a54ad7ed652ab0ca4ba1 (patch)
tree575a4a0b3ac8d9268c3db14af1d383dc4465112c
parent2e71cc0d51d8f0dd4532d88c8fffccc08ba7ecdb (diff)
[POWERPC] 4xx: Introduce cpu_setup functionality to 44x platform
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 <vbarshak@ru.mvista.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
-rw-r--r--arch/powerpc/kernel/Makefile1
-rw-r--r--arch/powerpc/kernel/cpu_setup_44x.S19
-rw-r--r--arch/powerpc/kernel/cputable.c13
3 files changed, 27 insertions, 6 deletions
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index fb33a7e7194..f1dd90439ef 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -58,6 +58,7 @@ obj-y += time.o prom.o traps.o setup-common.o \
misc_$(CONFIG_WORD_SIZE).o
obj-$(CONFIG_PPC32) += entry_32.o setup_32.o
obj-$(CONFIG_PPC64) += dma_64.o iommu.o
+obj-$(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
diff --git a/arch/powerpc/kernel/cpu_setup_44x.S b/arch/powerpc/kernel/cpu_setup_44x.S
new file mode 100644
index 00000000000..6a6e6c71ad6
--- /dev/null
+++ b/arch/powerpc/kernel/cpu_setup_44x.S
@@ -0,0 +1,19 @@
+/*
+ * This file contains low level CPU setup functions.
+ * Valentine Barshak <vbarshak@ru.mvista.com>
+ * MontaVista Software, Inc (c) 2007
+ *
+ * Based on cpu_setup_6xx code by
+ * Benjamin Herrenschmidt <benh@kernel.crashing.org>
+ *
+ * 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 --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index 8eb8087383e..8711499f5a0 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -1319,17 +1319,18 @@ struct cpu_spec *identify_cpu(unsigned long offset, unsigned int pvr)
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();