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EFM32: Use SECURE_ACCESS to access the ROM table 

To allow enabling of uVisor on EFM32, the ROM table must be accessed
through the CMSIS-provided SECURE_ACCESS macro.
pull/5584/head
Alessandro Angelino 2016-09-16 11:51:19 +01:00 committed by Steven Cooreman
parent 2becfbe2e4
commit 1b0922e97b
1 changed files with 11 additions and 5 deletions
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16
targets/TARGET_Silicon_Labs/TARGET_EFM32/emlib/src/em_system.c
View File

@ -33,6 +33,7 @@
#include "em_system.h"
#include "em_assert.h"
#include <stddef.h>
#include "core_cmSecureAccess.h"
/***************************************************************************//**
* @addtogroup emlib
@ -61,19 +62,24 @@ void SYSTEM_ChipRevisionGet(SYSTEM_ChipRevision_TypeDef *rev)
EFM_ASSERT(rev);
uint32_t pid0 = SECURE_READ(&(ROMTABLE->PID0));
uint32_t pid1 = SECURE_READ(&(ROMTABLE->PID1));
uint32_t pid2 = SECURE_READ(&(ROMTABLE->PID2));
uint32_t pid3 = SECURE_READ(&(ROMTABLE->PID3));
/* CHIP FAMILY bit [5:2] */
tmp = (((ROMTABLE->PID1 & _ROMTABLE_PID1_FAMILYMSB_MASK) >> _ROMTABLE_PID1_FAMILYMSB_SHIFT) << 2);
tmp = (((pid1 & _ROMTABLE_PID1_FAMILYMSB_MASK) >> _ROMTABLE_PID1_FAMILYMSB_SHIFT) << 2);
/* CHIP FAMILY bit [1:0] */
tmp |= ((ROMTABLE->PID0 & _ROMTABLE_PID0_FAMILYLSB_MASK) >> _ROMTABLE_PID0_FAMILYLSB_SHIFT);
tmp |= ((pid0 & _ROMTABLE_PID0_FAMILYLSB_MASK) >> _ROMTABLE_PID0_FAMILYLSB_SHIFT);
rev->family = tmp;
/* CHIP MAJOR bit [3:0] */
rev->major = (ROMTABLE->PID0 & _ROMTABLE_PID0_REVMAJOR_MASK) >> _ROMTABLE_PID0_REVMAJOR_SHIFT;
rev->major = (pid0 & _ROMTABLE_PID0_REVMAJOR_MASK) >> _ROMTABLE_PID0_REVMAJOR_SHIFT;
/* CHIP MINOR bit [7:4] */
tmp = (((ROMTABLE->PID2 & _ROMTABLE_PID2_REVMINORMSB_MASK) >> _ROMTABLE_PID2_REVMINORMSB_SHIFT) << 4);
tmp = (((pid2 & _ROMTABLE_PID2_REVMINORMSB_MASK) >> _ROMTABLE_PID2_REVMINORMSB_SHIFT) << 4);
/* CHIP MINOR bit [3:0] */
tmp |= ((ROMTABLE->PID3 & _ROMTABLE_PID3_REVMINORLSB_MASK) >> _ROMTABLE_PID3_REVMINORLSB_SHIFT);
tmp |= ((pid3 & _ROMTABLE_PID3_REVMINORLSB_MASK) >> _ROMTABLE_PID3_REVMINORLSB_SHIFT);
rev->minor = tmp;
}