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author | David S. Miller <davem@davemloft.net> | 2009-03-28 00:19:16 (GMT) |
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committer | David S. Miller <davem@davemloft.net> | 2009-03-28 00:19:16 (GMT) |
commit | a83398570e17af6bb81eb94f4f5dd356bd2828d8 (patch) | |
tree | 5b5c7c3a56898485479291b7c964a1f3887d469c /arch/sh/mm/pmb-fixed.c | |
parent | f9384d41c02408dd404aa64d66d0ef38adcf6479 (diff) | |
parent | 0b4d569de222452bcb55a4a536ade6cf4d8d1e30 (diff) | |
download | linux-fsl-qoriq-a83398570e17af6bb81eb94f4f5dd356bd2828d8.tar.xz |
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Diffstat (limited to 'arch/sh/mm/pmb-fixed.c')
-rw-r--r-- | arch/sh/mm/pmb-fixed.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/arch/sh/mm/pmb-fixed.c b/arch/sh/mm/pmb-fixed.c new file mode 100644 index 0000000..43c8eac --- /dev/null +++ b/arch/sh/mm/pmb-fixed.c @@ -0,0 +1,45 @@ +/* + * arch/sh/mm/fixed_pmb.c + * + * Copyright (C) 2009 Renesas Solutions Corp. + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ +#include <linux/init.h> +#include <linux/mm.h> +#include <linux/io.h> +#include <asm/mmu.h> +#include <asm/mmu_context.h> + +static int __uses_jump_to_uncached fixed_pmb_init(void) +{ + int i; + unsigned long addr, data; + + jump_to_uncached(); + + for (i = 0; i < PMB_ENTRY_MAX; i++) { + addr = PMB_DATA + (i << PMB_E_SHIFT); + data = ctrl_inl(addr); + if (!(data & PMB_V)) + continue; + + if (data & PMB_C) { +#if defined(CONFIG_CACHE_WRITETHROUGH) + data |= PMB_WT; +#elif defined(CONFIG_CACHE_WRITEBACK) + data &= ~PMB_WT; +#else + data &= ~(PMB_C | PMB_WT); +#endif + } + ctrl_outl(data, addr); + } + + back_to_cached(); + + return 0; +} +arch_initcall(fixed_pmb_init); |