m68k: Allow no CPU/platform type for allnoconfig
Allow no CPU/platform type for allnoconfig
- Provide a dummy value for FPSTATESIZE if no CPU type was selected
- Provide a dummy value for NR_IRQS if no platform type was selected
- Warn the user if no CPU or platform type was selected
Note: you still cannot build an allnoconfig kernel, as CONFIG_SWAP=n doesn't
build and we cannot easily fix that
(http://groups.google.com/group/linux.kernel/browse_thread/thread/d430c78b07e1827b)
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/m68k/kernel/setup.c b/arch/m68k/kernel/setup.c
index a9fb83a..b1f39e4 100644
--- a/arch/m68k/kernel/setup.c
+++ b/arch/m68k/kernel/setup.c
@@ -26,6 +26,7 @@
#include <asm/bootinfo.h>
#include <asm/setup.h>
+#include <asm/fpu.h>
#include <asm/irq.h>
#include <asm/io.h>
#include <asm/machdep.h>
@@ -40,6 +41,11 @@
#include <asm/dvma.h>
#endif
+#if !FPSTATESIZE || !NR_IRQS
+#warning No CPU/platform type selected, your kernel will not work!
+#warning Are you building an allnoconfig kernel?
+#endif
+
unsigned long m68k_machtype;
EXPORT_SYMBOL(m68k_machtype);
unsigned long m68k_cputype;
diff --git a/include/asm-m68k/fpu.h b/include/asm-m68k/fpu.h
index 59701d7..ffb6b8c 100644
--- a/include/asm-m68k/fpu.h
+++ b/include/asm-m68k/fpu.h
@@ -7,15 +7,15 @@
*/
#if defined(CONFIG_M68020) || defined(CONFIG_M68030)
-#define FPSTATESIZE (216/sizeof(unsigned char))
+#define FPSTATESIZE (216)
#elif defined(CONFIG_M68040)
-#define FPSTATESIZE (96/sizeof(unsigned char))
+#define FPSTATESIZE (96)
#elif defined(CONFIG_M68KFPU_EMU)
-#define FPSTATESIZE (28/sizeof(unsigned char))
+#define FPSTATESIZE (28)
#elif defined(CONFIG_M68060)
-#define FPSTATESIZE (12/sizeof(unsigned char))
+#define FPSTATESIZE (12)
#else
-#define FPSTATESIZE error no_cpu_type_configured
+#define FPSTATESIZE (0)
#endif
#endif /* __M68K_FPU_H */
diff --git a/include/asm-m68k/irq.h b/include/asm-m68k/irq.h
index eb29a52..226bfc0 100644
--- a/include/asm-m68k/irq.h
+++ b/include/asm-m68k/irq.h
@@ -24,7 +24,7 @@
#elif defined(CONFIG_HP300)
#define NR_IRQS 8
#else
-#error unknown nr of irqs
+#define NR_IRQS 0
#endif
/*
diff --git a/include/asm-m68k/tlbflush.h b/include/asm-m68k/tlbflush.h
index 17707ec..acb6bf2 100644
--- a/include/asm-m68k/tlbflush.h
+++ b/include/asm-m68k/tlbflush.h
@@ -16,7 +16,7 @@
".chip 68k"
: : "a" (addr));
set_fs(old_fs);
- } else
+ } else if (CPU_IS_020_OR_030)
__asm__ __volatile__("pflush #4,#4,(%0)" : : "a" (addr));
}
@@ -29,7 +29,7 @@
__asm__ __volatile__(".chip 68040\n\t"
"pflushan\n\t"
".chip 68k");
- else
+ else if (CPU_IS_020_OR_030)
__asm__ __volatile__("pflush #0,#4");
}
@@ -45,7 +45,7 @@
{
if (CPU_IS_040_OR_060)
__flush_tlb040_one(addr);
- else
+ else if (CPU_IS_020_OR_030)
__asm__ __volatile__("pflush #0,#4,(%0)" : : "a" (addr));
}
@@ -60,7 +60,7 @@
__asm__ __volatile__(".chip 68040\n\t"
"pflusha\n\t"
".chip 68k");
- else
+ else if (CPU_IS_020_OR_030)
__asm__ __volatile__("pflusha");
}