diff options
| author | David S. Miller <davem@davemloft.net> | 2009-09-24 15:13:11 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-09-24 15:13:11 -0700 |
| commit | 8b3f6af86378d0a10ca2f1ded1da124aef13b62c (patch) | |
| tree | de6ca90295730343c495be8d98be8efa322140ef /arch/sh/kernel/cpu/init.c | |
| parent | 139d6065c83071d5f66cd013a274a43699f8e2c1 (diff) | |
| parent | 94e0fb086fc5663c38bbc0fe86d698be8314f82f (diff) | |
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Conflicts:
drivers/staging/Kconfig
drivers/staging/Makefile
drivers/staging/cpc-usb/TODO
drivers/staging/cpc-usb/cpc-usb_drv.c
drivers/staging/cpc-usb/cpc.h
drivers/staging/cpc-usb/cpc_int.h
drivers/staging/cpc-usb/cpcusb.h
Diffstat (limited to 'arch/sh/kernel/cpu/init.c')
| -rw-r--r-- | arch/sh/kernel/cpu/init.c | 36 |
1 files changed, 33 insertions, 3 deletions
diff --git a/arch/sh/kernel/cpu/init.c b/arch/sh/kernel/cpu/init.c index ad85421099cd..e932ebef4738 100644 --- a/arch/sh/kernel/cpu/init.c +++ b/arch/sh/kernel/cpu/init.c @@ -3,7 +3,7 @@ * * CPU init code * - * Copyright (C) 2002 - 2007 Paul Mundt + * Copyright (C) 2002 - 2009 Paul Mundt * Copyright (C) 2003 Richard Curnow * * This file is subject to the terms and conditions of the GNU General Public @@ -62,6 +62,37 @@ static void __init speculative_execution_init(void) #define speculative_execution_init() do { } while (0) #endif +#ifdef CONFIG_CPU_SH4A +#define EXPMASK 0xff2f0004 +#define EXPMASK_RTEDS (1 << 0) +#define EXPMASK_BRDSSLP (1 << 1) +#define EXPMASK_MMCAW (1 << 4) + +static void __init expmask_init(void) +{ + unsigned long expmask = __raw_readl(EXPMASK); + + /* + * Future proofing. + * + * Disable support for slottable sleep instruction + * and non-nop instructions in the rte delay slot. + */ + expmask &= ~(EXPMASK_RTEDS | EXPMASK_BRDSSLP); + + /* + * Enable associative writes to the memory-mapped cache array + * until the cache flush ops have been rewritten. + */ + expmask |= EXPMASK_MMCAW; + + __raw_writel(expmask, EXPMASK); + ctrl_barrier(); +} +#else +#define expmask_init() do { } while (0) +#endif + /* 2nd-level cache init */ void __uses_jump_to_uncached __attribute__ ((weak)) l2_cache_init(void) { @@ -268,11 +299,9 @@ asmlinkage void __init sh_cpu_init(void) cache_init(); if (raw_smp_processor_id() == 0) { -#ifdef CONFIG_MMU shm_align_mask = max_t(unsigned long, current_cpu_data.dcache.way_size - 1, PAGE_SIZE - 1); -#endif /* Boot CPU sets the cache shape */ detect_cache_shape(); @@ -321,4 +350,5 @@ asmlinkage void __init sh_cpu_init(void) #endif speculative_execution_init(); + expmask_init(); } |