diff options
Diffstat (limited to 'include/drivers/nxp/sec_mon/snvs.h')
| -rw-r--r-- | include/drivers/nxp/sec_mon/snvs.h | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/include/drivers/nxp/sec_mon/snvs.h b/include/drivers/nxp/sec_mon/snvs.h new file mode 100644 index 0000000..4455383 --- /dev/null +++ b/include/drivers/nxp/sec_mon/snvs.h @@ -0,0 +1,86 @@ +/* + * Copyright 2021 NXP + * + * SPDX-License-Identifier: BSD-3-Clause + * + */ + +#ifndef SNVS_H +#define SNVS_H + + +#ifndef __ASSEMBLER__ + +#include <endian.h> +#include <stdbool.h> + +#include <lib/mmio.h> + +struct snvs_regs { + uint32_t reserved1; + uint32_t hp_com; /* 0x04 SNVS_HP Command Register */ + uint32_t reserved2[3]; + uint32_t hp_stat; /* 0x14 SNVS_HP Status Register */ +}; + +#ifdef NXP_SNVS_BE +#define snvs_read32(a) bswap32(mmio_read_32((uintptr_t)(a))) +#define snvs_write32(a, v) mmio_write_32((uintptr_t)(a), bswap32((v))) +#elif defined(NXP_SNVS_LE) +#define snvs_read32(a) mmio_read_32((uintptr_t)(a)) +#define snvs_write32(a, v) mmio_write_32((uintptr_t)(a), (v)) +#else +#error Please define CCSR SNVS register endianness +#endif + +void snvs_init(uintptr_t nxp_snvs_addr); +uint32_t get_snvs_state(void); +void transition_snvs_non_secure(void); +void transition_snvs_soft_fail(void); +uint32_t transition_snvs_trusted(void); +uint32_t transition_snvs_secure(void); + +uint32_t snvs_read_lp_gpr_bit(uint32_t offset, uint32_t bit_pos); +void snvs_write_lp_gpr_bit(uint32_t offset, uint32_t bit_pos, bool flag_val); + +void snvs_disable_zeroize_lp_gpr(void); + +#if defined(NXP_NV_SW_MAINT_LAST_EXEC_DATA) && defined(NXP_COINED_BB) +uint32_t snvs_read_app_data(void); +uint32_t snvs_read_app_data_bit(uint32_t bit_pos); +void snvs_clear_app_data(void); +void snvs_write_app_data_bit(uint32_t bit_pos); +#endif + +#endif /* __ASSEMBLER__ */ + +/* SSM_ST field in SNVS status reg */ +#define HPSTS_CHECK_SSM_ST 0x900 /* SNVS is in check state */ +#define HPSTS_NON_SECURE_SSM_ST 0xb00 /* SNVS is in non secure state */ +#define HPSTS_TRUST_SSM_ST 0xd00 /* SNVS is in trusted state */ +#define HPSTS_SECURE_SSM_ST 0xf00 /* SNVS is in secure state */ +#define HPSTS_SOFT_FAIL_SSM_ST 0x300 /* SNVS is in soft fail state */ +#define HPSTS_MASK_SSM_ST 0xf00 /* SSM_ST field mask in SNVS reg */ + +/* SNVS register bits */ +#define HPCOM_SW_SV 0x100 /* Security Violation bit */ +#define HPCOM_SW_FSV 0x200 /* Fatal Security Violation bit */ +#define HPCOM_SSM_ST 0x1 /* SSM_ST field in SNVS command reg */ +#define HPCOM_SSM_ST_DIS 0x2 /* Disable Secure to Trusted State */ +#define HPCOM_SSM_SFNS_DIS 0x4 /* Disable Soft Fail to Non-Secure */ + +#define NXP_LP_GPR0_OFFSET 0x90 +#define NXP_LPCR_OFFSET 0x38 +#define NXP_GPR_Z_DIS_BIT 24 + +#ifdef NXP_COINED_BB + +#ifndef NXP_APP_DATA_LP_GPR_OFFSET +#define NXP_APP_DATA_LP_GPR_OFFSET NXP_LP_GPR0_OFFSET +#endif + +#define NXP_LPGPR_ZEROTH_BIT 0 + +#endif /* NXP_COINED_BB */ + +#endif /* SNVS_H */ |