tree 09794c4089605a94d366e8cd6a934e43749e56b5
parent 65f2f304578dbce31edb85e0afcd29a88029714f
author Ben Fennema <fennema@google.com> 1493490932 -0700
committer Ben Fennema <fennema@google.com> 1493659751 -0700

mpu: actually enable the mpu (for real this time)

Change the SRD (subregion disable) bits to 0x00 to enable all subregions
Dump registers on MemoryManagemntFault and reboot
Add mpuShow function to dump mpu setup
Add __MPU_PRESENT #define to stm32 cmsis.h
Fix tid printing (all rtc registers only accept word read/writes)

MPU settings:
MPU: 1 HFNMIENA: 1 PRIVDEFENA: 1
0: E 00000000-ffffffff S: --- U: --- TEX: 0     00
1: E 08000000-0807ffff S: R-X U: R-X TEX: 0  C  00
2: E 20000000-2001ffff S: RW- U: RW- TEX: 0 SC  00
3: E 40000000-4003ffff S: RW- U: --- TEX: 0 S B 00
4: E e0000000-e00fffff S: RW- U: --- TEX: 0 S B 00

Bug: 37756881
Test: read from 0x00000004 and confirm system reboots
Change-Id: I8398ecd838dfeba40f5a12cb332eca0612cbc720
Signed-off-by: Ben Fennema <fennema@google.com>