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/*
* Copyright (c) 2016-2020, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef TZC_COMMON_PRIVATE_H
#define TZC_COMMON_PRIVATE_H
#include <arch.h>
#include <arch_helpers.h>
#include <drivers/arm/tzc_common.h>
#include <lib/mmio.h>
#define DEFINE_TZC_COMMON_WRITE_ACTION(fn_name, macro_name) \
static inline void _tzc##fn_name##_write_action( \
uintptr_t base, \
unsigned int action) \
{ \
mmio_write_32(base + TZC_##macro_name##_ACTION_OFF, \
action); \
}
#define DEFINE_TZC_COMMON_WRITE_REGION_BASE(fn_name, macro_name) \
static inline void _tzc##fn_name##_write_region_base( \
uintptr_t base, \
unsigned int region_no, \
unsigned long long region_base) \
{ \
mmio_write_32(base + \
TZC_REGION_OFFSET( \
TZC_##macro_name##_REGION_SIZE, \
(u_register_t)region_no) + \
TZC_##macro_name##_REGION_BASE_LOW_0_OFFSET, \
(uint32_t)region_base); \
mmio_write_32(base + \
TZC_REGION_OFFSET( \
TZC_##macro_name##_REGION_SIZE, \
(u_register_t)region_no) + \
TZC_##macro_name##_REGION_BASE_HIGH_0_OFFSET, \
(uint32_t)(region_base >> 32)); \
}
#define DEFINE_TZC_COMMON_WRITE_REGION_TOP(fn_name, macro_name) \
static inline void _tzc##fn_name##_write_region_top( \
uintptr_t base, \
unsigned int region_no, \
unsigned long long region_top) \
{ \
mmio_write_32(base + \
TZC_REGION_OFFSET( \
TZC_##macro_name##_REGION_SIZE, \
(u_register_t)region_no) + \
TZC_##macro_name##_REGION_TOP_LOW_0_OFFSET, \
(uint32_t)region_top); \
mmio_write_32(base + \
TZC_REGION_OFFSET( \
TZC_##macro_name##_REGION_SIZE, \
(u_register_t)region_no) + \
TZC_##macro_name##_REGION_TOP_HIGH_0_OFFSET, \
(uint32_t)(region_top >> 32)); \
}
#define DEFINE_TZC_COMMON_WRITE_REGION_ATTRIBUTES(fn_name, macro_name) \
static inline void _tzc##fn_name##_write_region_attributes( \
uintptr_t base, \
unsigned int region_no, \
unsigned int attr) \
{ \
mmio_write_32(base + \
TZC_REGION_OFFSET( \
TZC_##macro_name##_REGION_SIZE, \
(u_register_t)region_no) + \
TZC_##macro_name##_REGION_ATTR_0_OFFSET, \
attr); \
}
#define DEFINE_TZC_COMMON_WRITE_REGION_ID_ACCESS(fn_name, macro_name) \
static inline void _tzc##fn_name##_write_region_id_access( \
uintptr_t base, \
unsigned int region_no, \
unsigned int val) \
{ \
mmio_write_32(base + \
TZC_REGION_OFFSET( \
TZC_##macro_name##_REGION_SIZE, \
(u_register_t)region_no) + \
TZC_##macro_name##_REGION_ID_ACCESS_0_OFFSET, \
val); \
}
/*
* It is used to program region 0 ATTRIBUTES and ACCESS register.
*/
#define DEFINE_TZC_COMMON_CONFIGURE_REGION0(fn_name) \
static void _tzc##fn_name##_configure_region0(uintptr_t base, \
unsigned int sec_attr, \
unsigned int ns_device_access) \
{ \
assert(base != 0U); \
VERBOSE("TrustZone : Configuring region 0 " \
"(TZC Interface Base=0x%lx sec_attr=0x%x," \
" ns_devs=0x%x)\n", base, \
sec_attr, ns_device_access); \
\
/* Set secure attributes on region 0 */ \
_tzc##fn_name##_write_region_attributes(base, 0, \
sec_attr << TZC_REGION_ATTR_SEC_SHIFT); \
\
/***************************************************/ \
/* Specify which non-secure devices have permission*/ \
/* to access region 0. */ \
/***************************************************/ \
_tzc##fn_name##_write_region_id_access(base, \
0, \
ns_device_access); \
}
/*
* It is used to program a region from 1 to 8 in the TrustZone controller.
* NOTE:
* Region 0 is special; it is preferable to use
* ##fn_name##_configure_region0 for this region (see comment for
* that function).
*/
#define DEFINE_TZC_COMMON_CONFIGURE_REGION(fn_name) \
static void _tzc##fn_name##_configure_region(uintptr_t base, \
unsigned int filters, \
unsigned int region_no, \
unsigned long long region_base, \
unsigned long long region_top, \
unsigned int sec_attr, \
unsigned int nsaid_permissions) \
{ \
assert(base != 0U); \
VERBOSE("TrustZone : Configuring region " \
"(TZC Interface Base: 0x%lx, region_no = %u)" \
"...\n", base, region_no); \
VERBOSE("TrustZone : ... base = %llx, top = %llx," \
"\n", region_base, region_top); \
VERBOSE("TrustZone : ... sec_attr = 0x%x," \
" ns_devs = 0x%x)\n", \
sec_attr, nsaid_permissions); \
\
/***************************************************/ \
/* Inputs look ok, start programming registers. */ \
/* All the address registers are 32 bits wide and */ \
/* have a LOW and HIGH */ \
/* component used to construct an address up to a */ \
/* 64bit. */ \
/***************************************************/ \
_tzc##fn_name##_write_region_base(base, \
region_no, region_base); \
_tzc##fn_name##_write_region_top(base, \
region_no, region_top); \
\
/* Enable filter to the region and set secure attributes */\
_tzc##fn_name##_write_region_attributes(base, \
region_no, \
(sec_attr << TZC_REGION_ATTR_SEC_SHIFT) |\
(filters << TZC_REGION_ATTR_F_EN_SHIFT));\
\
/***************************************************/ \
/* Specify which non-secure devices have permission*/ \
/* to access this region. */ \
/***************************************************/ \
_tzc##fn_name##_write_region_id_access(base, \
region_no, \
nsaid_permissions); \
}
static inline unsigned int _tzc_read_peripheral_id(uintptr_t base)
{
unsigned int id;
id = mmio_read_32(base + PID0_OFF);
/* Masks DESC part in PID1 */
id |= ((mmio_read_32(base + PID1_OFF) & 0xFU) << 8U);
return id;
}
#endif /* TZC_COMMON_PRIVATE_H */