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/*
* Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of ARM nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <arch.h>
#include <arch_helpers.h>
#include <mmio.h>
#include <tzc_common.h>
#define DEFINE_TZC_COMMON_WRITE_ACTION(fn_name, macro_name) \
static inline void _tzc##fn_name##_write_action( \
uintptr_t base, \
tzc_action_t 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, \
int region_no, \
unsigned long long region_base) \
{ \
mmio_write_32(base + \
TZC_REGION_OFFSET( \
TZC_##macro_name##_REGION_SIZE, \
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, \
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, \
int region_no, \
unsigned long long region_top) \
{ \
mmio_write_32(base + \
TZC_REGION_OFFSET \
(TZC_##macro_name##_REGION_SIZE, \
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, \
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, \
int region_no, \
unsigned int attr) \
{ \
mmio_write_32(base + \
TZC_REGION_OFFSET( \
TZC_##macro_name##_REGION_SIZE, \
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, \
int region_no, \
unsigned int val) \
{ \
mmio_write_32(base + \
TZC_REGION_OFFSET( \
TZC_##macro_name##_REGION_SIZE, \
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) \
void _tzc##fn_name##_configure_region0(uintptr_t base, \
tzc_region_attributes_t sec_attr, \
unsigned int ns_device_access) \
{ \
assert(base); \
VERBOSE("TrustZone : Configuring region 0 " \
"(TZC Interface Base=%p sec_attr=0x%x," \
" ns_devs=0x%x)\n", (void *)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) \
void _tzc##fn_name##_configure_region(uintptr_t base, \
unsigned int filters, \
int region_no, \
unsigned long long region_base, \
unsigned long long region_top, \
tzc_region_attributes_t sec_attr, \
unsigned int nsaid_permissions) \
{ \
assert(base); \
VERBOSE("TrustZone : Configuring region " \
"(TZC Interface Base: %p, region_no = %d)" \
"...\n", (void *)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); \
}
#if DEBUG
static 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) & 0xF) << 8);
return id;
}
#ifdef AARCH32
static unsigned long long _tzc_get_max_top_addr(int addr_width)
{
/*
* Assume at least 32 bit wide address and initialize the max.
* This function doesn't use 64-bit integer arithmetic to avoid
* having to implement additional compiler library functions.
*/
unsigned long long addr_mask = 0xFFFFFFFF;
uint32_t *addr_ptr = (uint32_t *)&addr_mask;
assert(addr_width >= 32);
/* This logic works only on little - endian platforms */
assert((read_sctlr() & SCTLR_EE_BIT) == 0);
/*
* If required address width is greater than 32, populate the higher
* 32 bits of the 64 bit field with the max address.
*/
if (addr_width > 32)
*(addr_ptr + 1) = ((1 << (addr_width - 32)) - 1);
return addr_mask;
}
#else
#define _tzc_get_max_top_addr(addr_width)\
(UINT64_MAX >> (64 - (addr_width)))
#endif /* AARCH32 */
#endif