arch/armv7: Add API to disable MMU pages

Hardware / Coreboot - Deepa Dinamani [codeaurora.org] - 22 April 2015 01:58 UTC

Disables 4K regions in the MMU table. Assumes that the region is already accounted for by the first level page table entry.

BRANCH=storm BUG=chrome-os-partner:24786 TEST=verified mmu.pagetable.list output for Storm:

_______address___________|_physical________________|sec|_d_|_size____|_permissions____________________|_glb|_shr|_pageflags______________________| C:00000000--00000FFF| | | | | | | | | C:00001000--000FFFFF| A:00:00001000--000FFFFF| ns| 00| 00001000| P:readwrite U:readwrite notexec| yes| no | strongly ordered | C:00100000--29FFFFFF| A:00:00100000--29FFFFFF| ns| 00| 00100000| P:readwrite U:readwrite notexec| yes| no | strongly ordered | C:2A000000--2A05FFFF| A:00:2A000000--2A05FFFF| ns| 00| 00001000| P:readwrite U:readwrite exec | yes| no | write-back/no write alloc | C:2A060000--2A0FFFFF| A:00:2A060000--2A0FFFFF| ns| 00| 00001000| P:readwrite U:readwrite notexec| yes| no | strongly ordered | C:2A100000--3FFFFFFF| A:00:2A100000--3FFFFFFF| ns| 00| 00100000| P:readwrite U:readwrite notexec| yes| no | strongly ordered | C:40000000--59FFFFFF| A:00:40000000--59FFFFFF| ns| 00| 00100000| P:readwrite U:readwrite exec | yes| no | write-back/no write alloc | C:5A000000--5A1FFFFF| A:00:5A000000--5A1FFFFF| ns| 00| 00100000| P:readwrite U:readwrite notexec| yes| no | strongly ordered | C:5A200000--7FFFFFFF| A:00:5A200000--7FFFFFFF| ns| 00| 00100000| P:readwrite U:readwrite exec | yes| no | write-back/no write alloc | C:80000000--FFFFFFFF| | | | | | | | |

Change-Id: Ib603da91966cc4c70ea9d5fee04f1e9890d0bb93

e197748 arch/armv7: Add API to disable MMU pages.
src/arch/arm/armv7/mmu.c | 23 ++++++++++++++++++++++-
src/arch/arm/include/armv7/arch/cache.h | 2 ++
2 files changed, 24 insertions(+), 1 deletion(-)

Upstream: review.coreboot.org

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