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Diffstat (limited to 'arch/mips/kernel/cpu-bugs64.c')
-rw-r--r--arch/mips/kernel/cpu-bugs64.c47
1 files changed, 23 insertions, 24 deletions
diff --git a/arch/mips/kernel/cpu-bugs64.c b/arch/mips/kernel/cpu-bugs64.c
index af78456d413..417bb3e336a 100644
--- a/arch/mips/kernel/cpu-bugs64.c
+++ b/arch/mips/kernel/cpu-bugs64.c
@@ -18,6 +18,15 @@
#include <asm/mipsregs.h>
#include <asm/system.h>
+static char bug64hit[] __initdata =
+ "reliable operation impossible!\n%s";
+static char nowar[] __initdata =
+ "Please report to <linux-mips@linux-mips.org>.";
+static char r4kwar[] __initdata =
+ "Enable CPU_R4000_WORKAROUNDS to rectify.";
+static char daddiwar[] __initdata =
+ "Enable CPU_DADDI_WORKAROUNDS to rectify.";
+
static inline void align_mod(const int align, const int mod)
{
asm volatile(
@@ -155,13 +164,7 @@ static inline void check_mult_sh(void)
}
printk("no.\n");
- panic("Reliable operation impossible!\n"
-#ifndef CONFIG_CPU_R4000
- "Configure for R4000 to enable the workaround."
-#else
- "Please report to <linux-mips@linux-mips.org>."
-#endif
- );
+ panic(bug64hit, !R4000_WAR ? r4kwar : nowar);
}
static volatile int daddi_ov __initdata = 0;
@@ -233,15 +236,11 @@ static inline void check_daddi(void)
}
printk("no.\n");
- panic("Reliable operation impossible!\n"
-#if !defined(CONFIG_CPU_R4000) && !defined(CONFIG_CPU_R4400)
- "Configure for R4000 or R4400 to enable the workaround."
-#else
- "Please report to <linux-mips@linux-mips.org>."
-#endif
- );
+ panic(bug64hit, !DADDI_WAR ? daddiwar : nowar);
}
+int daddiu_bug __initdata = -1;
+
static inline void check_daddiu(void)
{
long v, w, tmp;
@@ -281,7 +280,9 @@ static inline void check_daddiu(void)
: "=&r" (v), "=&r" (w), "=&r" (tmp)
: "I" (0xffffffffffffdb9aUL), "I" (0x1234));
- if (v == w) {
+ daddiu_bug = v != w;
+
+ if (!daddiu_bug) {
printk("no.\n");
return;
}
@@ -303,18 +304,16 @@ static inline void check_daddiu(void)
}
printk("no.\n");
- panic("Reliable operation impossible!\n"
-#if !defined(CONFIG_CPU_R4000) && !defined(CONFIG_CPU_R4400)
- "Configure for R4000 or R4400 to enable the workaround."
-#else
- "Please report to <linux-mips@linux-mips.org>."
-#endif
- );
+ panic(bug64hit, !DADDI_WAR ? daddiwar : nowar);
}
-void __init check_bugs64(void)
+void __init check_bugs64_early(void)
{
check_mult_sh();
- check_daddi();
check_daddiu();
}
+
+void __init check_bugs64(void)
+{
+ check_daddi();
+}