_mqx_uint _kinetis_mpu_sw_check_mask
(
// [IN] cheked block start address
uint_32 addr,
// [IN] checked block size
_mem_size size,
// [IN] required access flags, direct value - cortex mpu specific
uint_32 flags,
uint_32 mask
)
{
_mqx_uint i, res = 0, state = 0;
for (i = 0; i < CORTEX_MPU_REC; i++) {
if ((MPU_WORD(i, 3) & MPU_WORD_VLD_MASK) && ((addr >= MPU_WORD(i, 0) && addr <= MPU_WORD(i, 1)) || ((addr + size - 1) >= MPU_WORD(i, 0) && (addr + size - 1) <= MPU_WORD(i, 1)))) {
// founded record, check flags
state |= MPU_WORD_M0UM(MPU_WORD(i, 2));
}
}
// only for core access
if ((state & mask) == flags) {
res = 1;
}
return res;
}
_mqx_uint _kinetis_mpu_add_region
(
// [IN] mpu region start address
uchar_ptr start,
// [IN] mpu region end address
uchar_ptr end,
// [IN] access rights, direct value - cortex mpu specific
_mqx_uint flags
)
{
_mqx_uint i;
_mqx_uint res = MQX_OK;
for (i = 1; (i < CORTEX_MPU_REC) && (MPU_WORD(i, 3) & MPU_WORD_VLD_MASK); i++) {}
if (i < CORTEX_MPU_REC) {
MPU_WORD(i, 0) = (_mem_size)start & MPU_WORD_SRTADDR_MASK;
MPU_WORD(i, 1) = (_mem_size)end & MPU_WORD_ENDADDR_MASK | 0x01f;
MPU_WORD(i, 2) = flags;
MPU_WORD(i, 3) = MPU_WORD_VLD_MASK;
}
else
res = MQX_ERROR;
return res;
}
_mqx_uint _kinetis_mpu_init(void) {
_mqx_uint i;
MPU_CESR &= ~MPU_CESR_VLD_MASK;
for (i = 0; i < CORTEX_MPU_REC; i++) {
MPU_WORD(i, 2) = 0;
}
return MQX_OK;
}
