diff options
| author | Cyril Chemparathy <cyril@ti.com> | 2012-07-16 15:37:06 -0400 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2013-05-30 16:02:03 +0100 |
| commit | 13f659b0f363114282679d06094337c5efa12fa8 (patch) | |
| tree | e178af55e00678576f74730168055738d33ac89a /arch/arm/mm | |
| parent | de22cc6e33449d8d6fb339619e32138ea4fcc2a4 (diff) | |
ARM: LPAE: use phys_addr_t in switch_mm()
This patch modifies the switch_mm() processor functions to use phys_addr_t.
On LPAE systems, we now honor the upper 32-bits of the physical address that
is being passed in, and program these into TTBR as expected.
Signed-off-by: Cyril Chemparathy <cyril@ti.com>
Signed-off-by: Vitaly Andrianov <vitalya@ti.com>
Reviewed-by: Nicolas Pitre <nico@linaro.org>
Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Subash Patel <subash.rp@samsung.com>
[will: fixed up conflict in 3-level switch_mm with big-endian changes]
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm/mm')
| -rw-r--r-- | arch/arm/mm/proc-v7-3level.S | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/arch/arm/mm/proc-v7-3level.S b/arch/arm/mm/proc-v7-3level.S index 363027e811d6..995857d3b530 100644 --- a/arch/arm/mm/proc-v7-3level.S +++ b/arch/arm/mm/proc-v7-3level.S @@ -39,6 +39,14 @@ #define TTB_FLAGS_SMP (TTB_IRGN_WBWA|TTB_S|TTB_RGN_OC_WBWA) #define PMD_FLAGS_SMP (PMD_SECT_WBWA|PMD_SECT_S) +#ifndef __ARMEB__ +# define rpgdl r0 +# define rpgdh r1 +#else +# define rpgdl r1 +# define rpgdh r0 +#endif + /* * cpu_v7_switch_mm(pgd_phys, tsk) * @@ -47,10 +55,10 @@ */ ENTRY(cpu_v7_switch_mm) #ifdef CONFIG_MMU - mmid r1, r1 @ get mm->context.id - asid r3, r1 - mov r3, r3, lsl #(48 - 32) @ ASID - mcrr p15, 0, r0, r3, c2 @ set TTB 0 + mmid r2, r2 + asid r2, r2 + orr rpgdh, rpgdh, r2, lsl #(48 - 32) @ upper 32-bits of pgd + mcrr p15, 0, rpgdl, rpgdh, c2 @ set TTB 0 isb #endif mov pc, lr |