diff options
| author | Olof Johansson <olof@lixom.net> | 2007-02-04 16:36:51 -0600 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2007-02-07 14:03:22 +1100 |
| commit | 1199919b69ff9559a3d3444fb5eb45b7cc48264d (patch) | |
| tree | 40313402be457e274e777b385703b25fa359f9b2 /arch/powerpc/kernel/cpu_setup_pa6t.S | |
| parent | bfed9d32d968b2054a036d419537e9e9909bb343 (diff) | |
[POWERPC] pasemi: Idle loops
Powersave support on PA6T. Right now it only uses 'doze' mode, and
will default to no savings (spin).
Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/kernel/cpu_setup_pa6t.S')
| -rw-r--r-- | arch/powerpc/kernel/cpu_setup_pa6t.S | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/cpu_setup_pa6t.S b/arch/powerpc/kernel/cpu_setup_pa6t.S new file mode 100644 index 00000000000..4047be25c4d --- /dev/null +++ b/arch/powerpc/kernel/cpu_setup_pa6t.S @@ -0,0 +1,44 @@ +/* + * Copyright (C) 2006-2007 PA Semi, Inc + * + * Maintained by: Olof Johansson <olof@lixom.net> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <asm/processor.h> +#include <asm/page.h> +#include <asm/cputable.h> +#include <asm/ppc_asm.h> +#include <asm/asm-offsets.h> +#include <asm/cache.h> + +/* Right now, restore and setup are the same thing */ +_GLOBAL(__restore_cpu_pa6t) +_GLOBAL(__setup_cpu_pa6t) + /* Do nothing if not running in HV mode */ + mfmsr r0 + rldicl. r0,r0,4,63 + beqlr + + mfspr r0,SPRN_HID5 + ori r0,r0,0x30 + mtspr SPRN_HID5,r0 + + mfspr r0,SPRN_LPCR + ori r0,r0,0x7000 + mtspr SPRN_LPCR,r0 + + blr |