diff options
| author | TAKADA Yoshihito <takada@mbf.nifty.com> | 2007-02-13 13:26:25 +0100 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2007-02-13 13:26:25 +0100 |
| commit | bcde1ebb81c51ebdfa02887703e4d21c1bbc2431 (patch) | |
| tree | fec0a4f6e2b973630a55c7dd51474dc908a56cfb /arch/i386/kernel/cpu | |
| parent | 86c418374223be3f328b5522545196db02c8ceda (diff) | |
[PATCH] i386: geode configuration fixes
Original code doesn't write back to CCR4 register. This patch reflects a
value of a register.
Cc: Jordan Crouse <jordan.crouse@amd.com>
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'arch/i386/kernel/cpu')
| -rw-r--r-- | arch/i386/kernel/cpu/cyrix.c | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/arch/i386/kernel/cpu/cyrix.c b/arch/i386/kernel/cpu/cyrix.c index 69b263f5632..408a74e5c42 100644 --- a/arch/i386/kernel/cpu/cyrix.c +++ b/arch/i386/kernel/cpu/cyrix.c @@ -161,19 +161,19 @@ static void __cpuinit set_cx86_inc(void) static void __cpuinit geode_configure(void) { unsigned long flags; - u8 ccr3, ccr4; + u8 ccr3; local_irq_save(flags); /* Suspend on halt power saving and enable #SUSP pin */ setCx86(CX86_CCR2, getCx86(CX86_CCR2) | 0x88); ccr3 = getCx86(CX86_CCR3); - setCx86(CX86_CCR3, (ccr3 & 0x0f) | 0x10); /* Enable */ - - ccr4 = getCx86(CX86_CCR4); - ccr4 |= 0x38; /* FPU fast, DTE cache, Mem bypass */ + setCx86(CX86_CCR3, (ccr3 & 0x0f) | 0x10); /* enable MAPEN */ - setCx86(CX86_CCR3, ccr3); + + /* FPU fast, DTE cache, Mem bypass */ + setCx86(CX86_CCR4, getCx86(CX86_CCR4) | 0x38); + setCx86(CX86_CCR3, ccr3); /* disable MAPEN */ set_cx86_memwb(); set_cx86_reorder(); @@ -420,15 +420,14 @@ static void __cpuinit cyrix_identify(struct cpuinfo_x86 * c) if (dir0 == 5 || dir0 == 3) { - unsigned char ccr3, ccr4; + unsigned char ccr3; unsigned long flags; printk(KERN_INFO "Enabling CPUID on Cyrix processor.\n"); local_irq_save(flags); ccr3 = getCx86(CX86_CCR3); - setCx86(CX86_CCR3, (ccr3 & 0x0f) | 0x10); /* enable MAPEN */ - ccr4 = getCx86(CX86_CCR4); - setCx86(CX86_CCR4, ccr4 | 0x80); /* enable cpuid */ - setCx86(CX86_CCR3, ccr3); /* disable MAPEN */ + setCx86(CX86_CCR3, (ccr3 & 0x0f) | 0x10); /* enable MAPEN */ + setCx86(CX86_CCR4, getCx86(CX86_CCR4) | 0x80); /* enable cpuid */ + setCx86(CX86_CCR3, ccr3); /* disable MAPEN */ local_irq_restore(flags); } } |