arch/arm/include/asm/arch-mx6/hab.h

   1 /*
   2  * Copyright (C) 2012 Freescale Semiconductor, Inc. All Rights Reserved.
   3  *
   4  * SPDX-License-Identifier:    GPL-2.0+
   5  *
   6 */
   7
   8 #ifndef __ARCH_MX6_HAB_H
   9 #define __ARCH_MX6_HAB_H
  10
  11 #ifdef CONFIG_SECURE_BOOT
  12
  13 #include <linux/types.h>
  14 #include <asm/arch/sys_proto.h>
  15
  16 int get_hab_status(void);
  17
  18 /* -------- start of HAB API updates ------------*/
  19 /* The following are taken from HAB4 SIS */
  20
  21 /* Status definitions */
  22 typedef enum hab_status {
  23         HAB_STS_ANY = 0x00,
  24         HAB_FAILURE = 0x33,
  25         HAB_WARNING = 0x69,
  26         HAB_SUCCESS = 0xf0
  27 } hab_status_t;
  28
  29 /* Security Configuration definitions */
  30 typedef enum hab_config {
  31         HAB_CFG_RETURN = 0x33, /**< Field Return IC */
  32         HAB_CFG_OPEN = 0xf0, /**< Non-secure IC */
  33         HAB_CFG_CLOSED = 0xcc /**< Secure IC */
  34 } hab_config_t;
  35
  36 /* State definitions */
  37 typedef enum hab_state {
  38         HAB_STATE_INITIAL = 0x33, /**< Initialising state (transitory) */
  39         HAB_STATE_CHECK = 0x55, /**< Check state (non-secure) */
  40         HAB_STATE_NONSECURE = 0x66, /**< Non-secure state */
  41         HAB_STATE_TRUSTED = 0x99, /**< Trusted state */
  42         HAB_STATE_SECURE = 0xaa, /**< Secure state */
  43         HAB_STATE_FAIL_SOFT = 0xcc, /**< Soft fail state */
  44         HAB_STATE_FAIL_HARD = 0xff, /**< Hard fail state (terminal) */
  45         HAB_STATE_NONE = 0xf0, /**< No security state machine */
  46         HAB_STATE_MAX
  47 } hab_state_t;
  48
  49 typedef enum hab_target {
  50         HAB_TGT_MEMORY = 0x0f, /* Check memory white list */
  51         HAB_TGT_PERIPHERAL = 0xf0, /* Check peripheral white list*/
  52         HAB_TGT_ANY = 0x55, /**< Check memory & peripheral white list */
  53 } hab_target_t;
  54
  55 enum HAB_FUNC_OFFSETS {
  56         HAB_RVT_HEADER,
  57         HAB_RVT_ENTRY,
  58         HAB_RVT_EXIT,
  59         HAB_RVT_CHECK_TARGET,
  60         HAB_RVT_AUTHENTICATE_IMAGE,
  61         HAB_RVT_RUN_DCD,
  62         HAB_RVT_RUN_CSF,
  63         HAB_RVT_ASSERT,
  64         HAB_RVT_REPORT_EVENT,
  65         HAB_RVT_REPORT_STATUS,
  66         HAB_RVT_FAILSAFE,
  67 };
  68
  69 /* Function prototype description */
  70 typedef hab_status_t hab_rvt_entry_t(void);
  71
  72 typedef hab_status_t hab_rvt_exit_t(void);
  73
  74 typedef hab_status_t hab_rvt_check_target_t(hab_target_t, const void *,
  75                 size_t);
  76
  77 typedef hab_status_t hab_loader_callback_f_t(void**, size_t*, const void*);
  78 typedef void *hab_rvt_authenticate_image_t(uint8_t, ptrdiff_t,
  79                 void **, size_t *, hab_loader_callback_f_t);
  80
  81 typedef hab_status_t hab_rvt_run_dcd_t(const uint8_t *dcd);
  82
  83 typedef hab_status_t hab_rvt_run_csf_t(const uint8_t *csf, uint8_t cid);
  84
  85 typedef hab_status_t hab_rvt_assert_t(uint32_t, const void *,
  86                 size_t);
  87
  88 typedef hab_status_t hab_rvt_report_event_t(hab_status_t, uint32_t,
  89                 uint8_t* , size_t*);
  90
  91 typedef hab_status_t hab_rvt_report_status_t(enum hab_config *,
  92                 enum hab_state *);
  93
  94 typedef void hapi_clock_init_t(void);
  95
  96 #ifdef CONFIG_SOC_MX6SX
  97 #define HAB_RVT_BASE                    0x00000100
  98 #else
  99 #define HAB_RVT_BASE                    0x00000094
 100 #endif
 101
 102 static inline void **hab_rvt_base(void)
 103 {
 104         uint32_t *base;
 105
 106         if (((is_cpu_type(MXC_CPU_MX6Q) || is_cpu_type(MXC_CPU_MX6D)) &&
 107                 soc_rev() >= CHIP_REV_1_5) ||
 108                 (is_cpu_type(MXC_CPU_MX6DL) && soc_rev() >= CHIP_REV_1_2) ||
 109                 is_cpu_type(MXC_CPU_MX6SOLO))
 110                 base = (void *)0x98;
 111         else
 112                 base = (void *)0x94;
 113         if ((*base & 0xff0000ff) != cpu_to_be32(0xdd000041)) {
 114                 printf("Invalid RVT @ %p\n", base);
 115                 return NULL;
 116         }
 117         return (void **)base;
 118 }
 119
 120 #define HAB_CID_ROM 0 /**< ROM Caller ID */
 121 #define HAB_CID_UBOOT 1 /**< UBOOT Caller ID*/
 122 /* ----------- end of HAB API updates ------------*/
 123
 124 #define hab_rvt_entry_p                                         \
 125         ((hab_rvt_entry_t *)hab_rvt_base()[HAB_RVT_ENTRY])
 126
 127 #define hab_rvt_exit_p                                          \
 128         ((hab_rvt_exit_t *)hab_rvt_base()[HAB_RVT_EXIT])
 129
 130 #define hab_rvt_check_target_p                                  \
 131         ((hab_rvt_check_target_t*)hab_rvt_base()[HAB_RVT_CHECK_TARGET])
 132
 133 #define hab_rvt_authenticate_image_p                            \
 134         ((hab_rvt_authenticate_image_t *)hab_rvt_base()[HAB_RVT_AUTHENTICATE_IMAGE])
 135
 136 #define hab_rvt_run_dcd_p                                       \
 137         ((hab_rvt_run_dcd_t*)hab_rvt_base()[HAB_RVT_RUN_DCD])
 138
 139 #define hab_rvt_run_csf_p                                       \
 140         ((hab_rvt_run_csf_t*)hab_rvt_base()[HAB_RVT_RUN_CSF])
 141
 142 #define hab_rvt_assert_p                                        \
 143         ((hab_rvt_assert_t*)hab_rvt_base()[HAB_RVT_ASSERT])
 144
 145 #define hab_rvt_report_event_p                                  \
 146         ((hab_rvt_report_event_t*)hab_rvt_base()[HAB_RVT_REPORT_EVENT])
 147
 148 #define hab_rvt_report_status_p                                 \
 149         ((hab_rvt_report_status_t*)hab_rvt_base()[HAB_RVT_REPORT_STATUS])
 150
 151 #define HAB_FUNC(n, rt)                                                 \
 152 static inline rt hab_rvt_##n(void)                                      \
 153 {                                                                       \
 154         if (hab_rvt_base() == NULL)                                     \
 155                 return (rt)-1;                                          \
 156         return hab_rvt_##n##_p();                                       \
 157 }                                                                       \
 158
 159 #define HAB_FUNC1(n, rt, t1)                                            \
 160 static inline rt hab_rvt_##n(t1 p1)                                     \
 161 {                                                                       \
 162         if (hab_rvt_base() == NULL)                                     \
 163                 return (rt)-1;                                          \
 164         return hab_rvt_##n##_p(p1);                                     \
 165 }
 166
 167 #define HAB_FUNC2(n, rt, t1, t2)                                        \
 168 static inline rt hab_rvt_##n(t1 p1, t2 p2)                              \
 169 {                                                                       \
 170         if (hab_rvt_base() == NULL)                                     \
 171                 return (rt)-1;                                          \
 172         return hab_rvt_##n##_p(p1, p2);                                 \
 173 }
 174
 175 #define HAB_FUNC3(n, rt, t1, t2, t3)                                    \
 176 static inline rt hab_rvt_##n(t1 p1, t2 p2, t3 p3)                       \
 177 {                                                                       \
 178         if (hab_rvt_base() == NULL)                                     \
 179                 return (rt)-1;                                          \
 180         return hab_rvt_##n##_p(p1, p2, p3);                             \
 181 }
 182
 183 #define HAB_FUNC4(n, rt, t1, t2, t3, t4)                                \
 184 static inline rt hab_rvt_##n(t1 p1, t2 p2, t3 p3, t4 p4)                \
 185 {                                                                       \
 186         if (hab_rvt_base() == NULL)                                     \
 187                 return (rt)-1;                                          \
 188         return hab_rvt_##n##_p(p1, p2, p3, p4);                         \
 189 }
 190
 191 #define HAB_FUNC5(n, rt, t1, t2, t3, t4, t5)                            \
 192 static inline rt hab_rvt_##n(t1 p1, t2 p2, t3 p3, t4 p4, t5 p5)         \
 193 {                                                                       \
 194         if (hab_rvt_base() == NULL)                                     \
 195                 return (rt)-1;                                          \
 196         return hab_rvt_##n##_p(p1, p2, p3, p4, p5);                     \
 197 }
 198
 199 #else /* CONFIG_SECURE_BOOT */
 200
 201 static inline int get_hab_status(void)
 202 {
 203         return 0;
 204 }
 205
 206 #endif /* CONFIG_SECURE_BOOT */
 207 #endif /* __ARCH_MX6_HAB_H */