From: Jonathan Austin Date: Thu, 28 Feb 2013 17:46:36 +0000 (+0000) Subject: ARM: mpu: add MPU probe and initialisation functions in C X-Git-Tag: omap-for-v3.11/fixes-for-merge-window~41^2^2~5^2~5 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5ad7dcbe40ae52bee67d7ed61efb6a3fccb6dc2b;p=pandora-kernel.git ARM: mpu: add MPU probe and initialisation functions in C This patch adds new functions for probing and initialising the ARMv7 PMSA-compliant MPU. These use the pre-defined and reserved MPU_PROBE_REGION for establishing properties of the MPU, which is necessary because certain probe operations require modifying region properties and reading back the results. This patch also introduces a minimal sanity_check_meminfo_mpu function, that ensures that the memory set-up passed to the kernel can be used in conjunction with the MPU. The base address of a region must be aligned to the region size, otherwise behavior is unpredictable and region sizes can only be specified as a power-of-two. To simplify the satisfaction of these requirements this implementation currently enforces that all memory is contiguous from PHYS_OFFSET, merging banks that are contiguous but passed in separately. The functions are added in this patch but wired in to the boot process later in the series. Signed-off-by: Jonathan Austin Reviewed-by: Will Deacon CC: Hyok S. Choi --- Reading git-diff-tree failed