1 // SPDX-License-Identifier: BSD-2-Clause 2 /* 3 * Copyright (C) 2020 Pengutronix 4 * Rouven Czerwinski <entwicklung@pengutronix.de> 5 */ 6 7 #include <io.h> 8 #include <drivers/imx_snvs.h> 9 #include <mm/core_memprot.h> 10 #include <mm/core_mmu.h> 11 #include <stdint.h> 12 #include <types_ext.h> 13 #include <trace.h> 14 15 enum snvs_security_cfg snvs_get_security_cfg(void) 16 { 17 vaddr_t snvs = core_mmu_get_va(SNVS_BASE, MEM_AREA_IO_SEC); 18 uint32_t val = 0; 19 20 val = io_read32(snvs + SNVS_HPSR); 21 DMSG("HPSR: 0x%"PRIx32, val); 22 if (val & SNVS_HPSR_SYS_SECURITY_BAD) 23 return SNVS_SECURITY_CFG_FIELD_RETURN; 24 else if (val & SNVS_HPSR_SYS_SECURITY_CLOSED) 25 return SNVS_SECURITY_CFG_CLOSED; 26 else if (val & SNVS_HPSR_SYS_SECURITY_OPEN) 27 return SNVS_SECURITY_CFG_OPEN; 28 else if (val > 4 && val < 8) 29 return SNVS_SECURITY_CFG_OPEN; 30 31 return SNVS_SECURITY_CFG_FAB; 32 } 33 34 enum snvs_ssm_mode snvs_get_ssm_mode(void) 35 { 36 vaddr_t snvs = core_mmu_get_va(SNVS_BASE, MEM_AREA_IO_SEC); 37 uint32_t val = 0; 38 39 val = io_read32(snvs + SNVS_HPSR); 40 val &= HPSR_SSM_ST_MASK; 41 val = val >> HPSR_SSM_ST_SHIFT; 42 DMSG("HPSR: SSM ST Mode: 0x%01"PRIx32, val); 43 return val; 44 } 45