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authorMichael Ellerman <michael@ellerman.id.au>2006-05-17 18:00:49 +1000
committerPaul Mackerras <paulus@samba.org>2006-05-19 15:02:16 +1000
commit473104134b35ce1c3ca77b738c561d6c215adc1b (patch)
tree979ccd57fe0695a66287d5f09fd3781e16cd1faa /include/asm-powerpc
parent2babf5c2ec2f2d5de3e38d20f7df7fd815fd10c9 (diff)
[PATCH] powerpc: Kdump header cleanup
We need to know the base address of the kdump kernel even when we're not a kdump kernel, so add a #define for it. Move the logic that sets the kdump kernelbase into kdump.h instead of page.h. Rename kdump_setup() to setup_kdump_trampoline() to make it clearer what it's doing, and add an empty definition for the !CRASH_DUMP case to avoid a Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc')
-rw-r--r--include/asm-powerpc/kdump.h29
-rw-r--r--include/asm-powerpc/page.h8
2 files changed, 28 insertions, 9 deletions
diff --git a/include/asm-powerpc/kdump.h b/include/asm-powerpc/kdump.h
index a87aed00d61..5a5c3b5ab1e 100644
--- a/include/asm-powerpc/kdump.h
+++ b/include/asm-powerpc/kdump.h
@@ -1,13 +1,38 @@
#ifndef _PPC64_KDUMP_H
#define _PPC64_KDUMP_H
+/* Kdump kernel runs at 32 MB, change at your peril. */
+#define KDUMP_KERNELBASE 0x2000000
+
/* How many bytes to reserve at zero for kdump. The reserve limit should
- * be greater or equal to the trampoline's end address. */
+ * be greater or equal to the trampoline's end address.
+ * Reserve to the end of the FWNMI area, see head_64.S */
#define KDUMP_RESERVE_LIMIT 0x8000
+#ifdef CONFIG_CRASH_DUMP
+
+#define PHYSICAL_START KDUMP_KERNELBASE
#define KDUMP_TRAMPOLINE_START 0x0100
#define KDUMP_TRAMPOLINE_END 0x3000
-extern void kdump_setup(void);
+#else /* !CONFIG_CRASH_DUMP */
+
+#define PHYSICAL_START 0x0
+
+#endif /* CONFIG_CRASH_DUMP */
+
+#ifndef __ASSEMBLY__
+#ifdef CONFIG_CRASH_DUMP
+
+extern void reserve_kdump_trampoline(void);
+extern void setup_kdump_trampoline(void);
+
+#else /* !CONFIG_CRASH_DUMP */
+
+static inline void reserve_kdump_trampoline(void) { ; }
+static inline void setup_kdump_trampoline(void) { ; }
+
+#endif /* CONFIG_CRASH_DUMP */
+#endif /* __ASSEMBLY__ */
#endif /* __PPC64_KDUMP_H */
diff --git a/include/asm-powerpc/page.h b/include/asm-powerpc/page.h
index 2fbecebe1c9..ae610b62048 100644
--- a/include/asm-powerpc/page.h
+++ b/include/asm-powerpc/page.h
@@ -13,6 +13,7 @@
#ifdef __KERNEL__
#include <linux/config.h>
#include <asm/asm-compat.h>
+#include <asm/kdump.h>
/*
* On PPC32 page size is 4K. For PPC64 we support either 4K or 64K software
@@ -52,13 +53,6 @@
* If you want to test if something's a kernel address, use is_kernel_addr().
*/
-#ifdef CONFIG_CRASH_DUMP
-/* Kdump kernel runs at 32 MB, change at your peril. */
-#define PHYSICAL_START 0x2000000
-#else
-#define PHYSICAL_START 0x0
-#endif
-
#define PAGE_OFFSET ASM_CONST(CONFIG_KERNEL_START)
#define KERNELBASE (PAGE_OFFSET + PHYSICAL_START)