Refactor the ARM CoreLink TZC-400 driver
TrustZone protection can be programmed by both memory and TrustZone
address space controllers like DMC-500 and TZC-400. These peripherals
share a similar programmer's view.
Furthermore, it is possible to have multiple instances of each type of
peripheral in a system resulting in multiple programmer's views.
For example, on the TZC-400 each of the 4 filter units can be enabled
or disabled for each region. There is a single set of registers to
program the region attributes. On the DMC-500, each filter unit has its
own programmer's view resulting in multiple sets of registers to program
the region attributes. The layout of the registers is almost the same
across all these variations.
Hence the existing driver in `tzc400\tzc400.c` is refactored into the
new driver in `tzc\tzc400.c`. The previous driver file is still maintained
for compatibility and it is now deprecated.
Change-Id: Ieabd0528e244582875bc7e65029a00517671216d
diff --git a/drivers/arm/tzc/tzc400.c b/drivers/arm/tzc/tzc400.c
new file mode 100644
index 0000000..ee6bf8d
--- /dev/null
+++ b/drivers/arm/tzc/tzc400.c
@@ -0,0 +1,259 @@
+/*
+ * 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 <assert.h>
+#include <debug.h>
+#include <mmio.h>
+#include <stddef.h>
+#include <tzc400.h>
+#include "tzc_common_private.c"
+
+/*
+ * Macros which will be used by common core functions.
+ */
+#define TZC_400_REGION_BASE_LOW_0_OFFSET 0x100
+#define TZC_400_REGION_BASE_HIGH_0_OFFSET 0x104
+#define TZC_400_REGION_TOP_LOW_0_OFFSET 0x108
+#define TZC_400_REGION_TOP_HIGH_0_OFFSET 0x10c
+#define TZC_400_REGION_ATTR_0_OFFSET 0x110
+#define TZC_400_REGION_ID_ACCESS_0_OFFSET 0x114
+
+/*
+ * Implementation defined values used to validate inputs later.
+ * Filters : max of 4 ; 0 to 3
+ * Regions : max of 9 ; 0 to 8
+ * Address width : Values between 32 to 64
+ */
+typedef struct tzc400_instance {
+ uintptr_t base;
+ uint8_t addr_width;
+ uint8_t num_filters;
+ uint8_t num_regions;
+} tzc400_instance_t;
+
+tzc400_instance_t tzc400;
+
+static inline unsigned int _tzc400_read_build_config(uintptr_t base)
+{
+ return mmio_read_32(base + BUILD_CONFIG_OFF);
+}
+
+static inline unsigned int _tzc400_read_gate_keeper(uintptr_t base)
+{
+ return mmio_read_32(base + GATE_KEEPER_OFF);
+}
+
+static inline void _tzc400_write_gate_keeper(uintptr_t base, unsigned int val)
+{
+ mmio_write_32(base + GATE_KEEPER_OFF, val);
+}
+
+/*
+ * Get the open status information for all filter units.
+ */
+#define get_gate_keeper_os(base) ((_tzc400_read_gate_keeper(base) >> \
+ GATE_KEEPER_OS_SHIFT) & \
+ GATE_KEEPER_OS_MASK)
+
+
+/* Define common core functions used across different TZC peripherals. */
+DEFINE_TZC_COMMON_WRITE_ACTION(400, 400)
+DEFINE_TZC_COMMON_WRITE_REGION_BASE(400, 400)
+DEFINE_TZC_COMMON_WRITE_REGION_TOP(400, 400)
+DEFINE_TZC_COMMON_WRITE_REGION_ATTRIBUTES(400, 400)
+DEFINE_TZC_COMMON_WRITE_REGION_ID_ACCESS(400, 400)
+DEFINE_TZC_COMMON_CONFIGURE_REGION0(400)
+DEFINE_TZC_COMMON_CONFIGURE_REGION(400)
+
+static unsigned int _tzc400_get_gate_keeper(uintptr_t base,
+ unsigned int filter)
+{
+ unsigned int open_status;
+
+ open_status = get_gate_keeper_os(base);
+
+ return (open_status >> filter) & GATE_KEEPER_FILTER_MASK;
+}
+
+/* This function is not MP safe. */
+static void _tzc400_set_gate_keeper(uintptr_t base,
+ unsigned int filter,
+ int val)
+{
+ unsigned int open_status;
+
+ /* Upper half is current state. Lower half is requested state. */
+ open_status = get_gate_keeper_os(base);
+
+ if (val)
+ open_status |= (1 << filter);
+ else
+ open_status &= ~(1 << filter);
+
+ _tzc400_write_gate_keeper(base, (open_status & GATE_KEEPER_OR_MASK) <<
+ GATE_KEEPER_OR_SHIFT);
+
+ /* Wait here until we see the change reflected in the TZC status. */
+ while ((get_gate_keeper_os(base)) != open_status)
+ ;
+}
+
+void tzc400_set_action(tzc_action_t action)
+{
+ assert(tzc400.base);
+ assert(action <= TZC_ACTION_ERR_INT);
+
+ /*
+ * - Currently no handler is provided to trap an error via interrupt
+ * or exception.
+ * - The interrupt action has not been tested.
+ */
+ _tzc400_write_action(tzc400.base, action);
+}
+
+void tzc400_init(uintptr_t base)
+{
+#if DEBUG
+ unsigned int tzc400_id;
+#endif
+ unsigned int tzc400_build;
+
+ assert(base);
+ tzc400.base = base;
+
+#if DEBUG
+ tzc400_id = _tzc_read_peripheral_id(base);
+ if (tzc400_id != TZC_400_PERIPHERAL_ID) {
+ ERROR("TZC-400 : Wrong device ID (0x%x).\n", tzc400_id);
+ panic();
+ }
+#endif
+
+ /* Save values we will use later. */
+ tzc400_build = _tzc400_read_build_config(tzc400.base);
+ tzc400.num_filters = ((tzc400_build >> BUILD_CONFIG_NF_SHIFT) &
+ BUILD_CONFIG_NF_MASK) + 1;
+ tzc400.addr_width = ((tzc400_build >> BUILD_CONFIG_AW_SHIFT) &
+ BUILD_CONFIG_AW_MASK) + 1;
+ tzc400.num_regions = ((tzc400_build >> BUILD_CONFIG_NR_SHIFT) &
+ BUILD_CONFIG_NR_MASK) + 1;
+}
+
+/*
+ * `tzc400_configure_region0` is used to program region 0 into the TrustZone
+ * controller. Region 0 covers the whole address space that is not mapped
+ * to any other region, and is enabled on all filters; this cannot be
+ * changed. This function only changes the access permissions.
+ */
+void tzc400_configure_region0(tzc_region_attributes_t sec_attr,
+ unsigned int ns_device_access)
+{
+ assert(tzc400.base);
+ assert(sec_attr <= TZC_REGION_S_RDWR);
+
+ _tzc400_configure_region0(tzc400.base, sec_attr, ns_device_access);
+}
+
+/*
+ * `tzc400_configure_region` is used to program regions into the TrustZone
+ * controller. A region can be associated with more than one filter. The
+ * associated filters are passed in as a bitmap (bit0 = filter0).
+ * NOTE:
+ * Region 0 is special; it is preferable to use tzc400_configure_region0
+ * for this region (see comment for that function).
+ */
+void tzc400_configure_region(unsigned int filters,
+ int region,
+ uintptr_t region_base,
+ uintptr_t region_top,
+ tzc_region_attributes_t sec_attr,
+ unsigned int nsaid_permissions)
+{
+ assert(tzc400.base);
+
+ /* Do range checks on filters and regions. */
+ assert(((filters >> tzc400.num_filters) == 0) &&
+ (region >= 0) && (region < tzc400.num_regions));
+
+ /*
+ * Do address range check based on TZC configuration. A 64bit address is
+ * the max and expected case.
+ */
+ assert(((region_top <= (UINT64_MAX >> (64 - tzc400.addr_width))) &&
+ (region_base < region_top)));
+
+ /* region_base and (region_top + 1) must be 4KB aligned */
+ assert(((region_base | (region_top + 1)) & (4096 - 1)) == 0);
+
+ assert(sec_attr <= TZC_REGION_S_RDWR);
+
+ _tzc400_configure_region(tzc400.base, filters, region, region_base,
+ region_top,
+ sec_attr, nsaid_permissions);
+}
+
+void tzc400_enable_filters(void)
+{
+ unsigned int state;
+ unsigned int filter;
+
+ assert(tzc400.base);
+
+ for (filter = 0; filter < tzc400.num_filters; filter++) {
+ state = _tzc400_get_gate_keeper(tzc400.base, filter);
+ if (state) {
+ /* The TZC filter is already configured. Changing the
+ * programmer's view in an active system can cause
+ * unpredictable behavior therefore panic for now rather
+ * than try to determine whether this is safe in this
+ * instance. See:
+ * http://infocenter.arm.com/help/index.jsp?\
+ * topic=/com.arm.doc.ddi0504c/CJHHECBF.html */
+ ERROR("TZC-400 : Filter %d Gatekeeper already"
+ " enabled.\n", filter);
+ panic();
+ }
+ _tzc400_set_gate_keeper(tzc400.base, filter, 1);
+ }
+}
+
+void tzc400_disable_filters(void)
+{
+ unsigned int filter;
+
+ assert(tzc400.base);
+
+ /*
+ * We don't do the same state check as above as the Gatekeepers are
+ * disabled after reset.
+ */
+ for (filter = 0; filter < tzc400.num_filters; filter++)
+ _tzc400_set_gate_keeper(tzc400.base, filter, 0);
+}
diff --git a/drivers/arm/tzc/tzc_common_private.c b/drivers/arm/tzc/tzc_common_private.c
new file mode 100644
index 0000000..f570daf
--- /dev/null
+++ b/drivers/arm/tzc/tzc_common_private.c
@@ -0,0 +1,202 @@
+/*
+ * 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 <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, \
+ uintptr_t region_base) \
+ { \
+ mmio_write_32(base + \
+ TZC_REGION_OFFSET( \
+ TZC_##macro_name##_REGION_SIZE, \
+ region_no) + \
+ TZC_##macro_name##_REGION_BASE_LOW_0_OFFSET, \
+ (unsigned int)region_base); \
+ mmio_write_32(base + \
+ TZC_REGION_OFFSET( \
+ TZC_##macro_name##_REGION_SIZE, \
+ region_no) + \
+ TZC_##macro_name##_REGION_BASE_HIGH_0_OFFSET, \
+ (unsigned int)(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, \
+ uintptr_t region_top) \
+ { \
+ mmio_write_32(base + \
+ TZC_REGION_OFFSET \
+ (TZC_##macro_name##_REGION_SIZE, \
+ region_no) + \
+ TZC_##macro_name##_REGION_TOP_LOW_0_OFFSET, \
+ (unsigned int)region_top); \
+ mmio_write_32(base + \
+ TZC_REGION_OFFSET( \
+ TZC_##macro_name##_REGION_SIZE, \
+ region_no) + \
+ TZC_##macro_name##_REGION_TOP_HIGH_0_OFFSET, \
+ (unsigned int)(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, \
+ uintptr_t region_base, \
+ uintptr_t 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 = %p, top = %p," \
+ "\n", (void *)region_base, (void *)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;
+}
+#endif
diff --git a/drivers/arm/tzc400/tzc400.c b/drivers/arm/tzc400/tzc400.c
index 7194443..97adf81 100644
--- a/drivers/arm/tzc400/tzc400.c
+++ b/drivers/arm/tzc400/tzc400.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2014-2015, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2014-2016, 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:
@@ -28,313 +28,8 @@
* POSSIBILITY OF SUCH DAMAGE.
*/
-#include <assert.h>
-#include <debug.h>
-#include <mmio.h>
-#include <stddef.h>
-#include <tzc400.h>
-
-/*
- * Implementation defined values used to validate inputs later.
- * Filters : max of 4 ; 0 to 3
- * Regions : max of 9 ; 0 to 8
- * Address width : Values between 32 to 64
- */
-typedef struct tzc_instance {
- uintptr_t base;
- uint8_t addr_width;
- uint8_t num_filters;
- uint8_t num_regions;
-} tzc_instance_t;
-
-tzc_instance_t tzc;
-
-
-static inline uint32_t tzc_read_build_config(uintptr_t base)
-{
- return mmio_read_32(base + BUILD_CONFIG_OFF);
-}
-
-static inline uint32_t tzc_read_gate_keeper(uintptr_t base)
-{
- return mmio_read_32(base + GATE_KEEPER_OFF);
-}
-
-static inline void tzc_write_gate_keeper(uintptr_t base, uint32_t val)
-{
- mmio_write_32(base + GATE_KEEPER_OFF, val);
-}
-
-static inline void tzc_write_action(uintptr_t base, tzc_action_t action)
-{
- mmio_write_32(base + ACTION_OFF, action);
-}
-
-static inline void tzc_write_region_base_low(uintptr_t base,
- uint32_t region,
- uint32_t val)
-{
- mmio_write_32(base + REGION_BASE_LOW_OFF +
- REGION_NUM_OFF(region), val);
-}
-
-static inline void tzc_write_region_base_high(uintptr_t base,
- uint32_t region,
- uint32_t val)
-{
- mmio_write_32(base + REGION_BASE_HIGH_OFF +
- REGION_NUM_OFF(region), val);
-}
-
-static inline void tzc_write_region_top_low(uintptr_t base,
- uint32_t region,
- uint32_t val)
-{
- mmio_write_32(base + REGION_TOP_LOW_OFF +
- REGION_NUM_OFF(region), val);
-}
-
-static inline void tzc_write_region_top_high(uintptr_t base,
- uint32_t region,
- uint32_t val)
-{
- mmio_write_32(base + REGION_TOP_HIGH_OFF +
- REGION_NUM_OFF(region), val);
-}
-
-static inline void tzc_write_region_attributes(uintptr_t base,
- uint32_t region,
- uint32_t val)
-{
- mmio_write_32(base + REGION_ATTRIBUTES_OFF +
- REGION_NUM_OFF(region), val);
-}
-
-static inline void tzc_write_region_id_access(uintptr_t base,
- uint32_t region,
- uint32_t val)
-{
- mmio_write_32(base + REGION_ID_ACCESS_OFF +
- REGION_NUM_OFF(region), val);
-}
-
-static unsigned int tzc_read_peripheral_id(uintptr_t base)
-{
- unsigned int id;
-
- id = mmio_read_8(base + PID0_OFF);
- /* Masks jep106_id_3_0 part in PID1 */
- id |= ((mmio_read_8(base + PID1_OFF) & 0xF) << 8);
-
- return id;
-}
-
-static uint32_t tzc_get_gate_keeper(uintptr_t base, uint8_t filter)
-{
- uint32_t tmp;
-
- tmp = (tzc_read_gate_keeper(base) >> GATE_KEEPER_OS_SHIFT) &
- GATE_KEEPER_OS_MASK;
-
- return (tmp >> filter) & GATE_KEEPER_FILTER_MASK;
-}
-
-/* This function is not MP safe. */
-static void tzc_set_gate_keeper(uintptr_t base, uint8_t filter, uint32_t val)
-{
- uint32_t tmp;
-
- /* Upper half is current state. Lower half is requested state. */
- tmp = (tzc_read_gate_keeper(base) >> GATE_KEEPER_OS_SHIFT) &
- GATE_KEEPER_OS_MASK;
-
- if (val)
- tmp |= (1 << filter);
- else
- tmp &= ~(1 << filter);
-
- tzc_write_gate_keeper(base, (tmp & GATE_KEEPER_OR_MASK) <<
- GATE_KEEPER_OR_SHIFT);
-
- /* Wait here until we see the change reflected in the TZC status. */
- while (((tzc_read_gate_keeper(base) >> GATE_KEEPER_OS_SHIFT) &
- GATE_KEEPER_OS_MASK) != tmp)
- ;
-}
-
-
-void tzc_init(uintptr_t base)
-{
- unsigned int tzc_id;
- unsigned int tzc_build;
-
- assert(base);
-
- tzc.base = base;
-
- /*
- * We expect to see a tzc400. Check peripheral ID.
- */
- tzc_id = tzc_read_peripheral_id(tzc.base);
- if (tzc_id != TZC400_PERIPHERAL_ID) {
- ERROR("TZC : Wrong device ID (0x%x).\n", tzc_id);
- panic();
- }
-
- /* Save values we will use later. */
- tzc_build = tzc_read_build_config(tzc.base);
- tzc.num_filters = ((tzc_build >> BUILD_CONFIG_NF_SHIFT) &
- BUILD_CONFIG_NF_MASK) + 1;
- tzc.addr_width = ((tzc_build >> BUILD_CONFIG_AW_SHIFT) &
- BUILD_CONFIG_AW_MASK) + 1;
- tzc.num_regions = ((tzc_build >> BUILD_CONFIG_NR_SHIFT) &
- BUILD_CONFIG_NR_MASK) + 1;
-}
-
-/*
- * `tzc_configure_region0` is used to program region 0 into the TrustZone
- * controller. Region 0 covers the whole address space that is not mapped
- * to any other region, and is enabled on all filters; this cannot be
- * changed. This function only changes the access permissions.
- */
-void tzc_configure_region0(tzc_region_attributes_t sec_attr,
- uint32_t ns_device_access)
-{
- assert(tzc.base);
-
- VERBOSE("TZC : Configuring region 0 (sec_attr=0x%x, ns_devs=0x%x)\n",
- sec_attr, ns_device_access);
-
- assert(sec_attr <= TZC_REGION_S_RDWR);
-
- /* Set secure attributes on region 0 */
- tzc_write_region_attributes(tzc.base, 0,
- sec_attr << REG_ATTR_SEC_SHIFT);
-
- /*
- * Specify which non-secure devices have permission to access
- * region 0.
- */
- tzc_write_region_id_access(tzc.base, 0, ns_device_access);
-}
-
-
-/*
- * `tzc_configure_region` is used to program regions into the TrustZone
- * controller. A region can be associated with more than one filter. The
- * associated filters are passed in as a bitmap (bit0 = filter0).
- * NOTE:
- * Region 0 is special; it is preferable to use tzc_configure_region0
- * for this region (see comment for that function).
- */
-void tzc_configure_region(uint32_t filters,
- uint8_t region,
- uint64_t region_base,
- uint64_t region_top,
- tzc_region_attributes_t sec_attr,
- uint32_t ns_device_access)
-{
- assert(tzc.base);
-
- VERBOSE("TZC : Configuring region (filters=0x%x, region=%d, ...\n",
- filters, region);
- VERBOSE("TZC : ... base=0x%lx, top=0x%lx, ...\n",
- region_base, region_top);
- VERBOSE("TZC : ... sec_attr=0x%x, ns_devs=0x%x)\n",
- sec_attr, ns_device_access);
-
- /* Do range checks on filters and regions. */
- assert(((filters >> tzc.num_filters) == 0) &&
- (region < tzc.num_regions));
-
- /*
- * Do address range check based on TZC configuration. A 64bit address is
- * the max and expected case.
- */
- assert(((region_top <= (UINT64_MAX >> (64 - tzc.addr_width))) &&
- (region_base < region_top)));
-
- /* region_base and (region_top + 1) must be 4KB aligned */
- assert(((region_base | (region_top + 1)) & (4096 - 1)) == 0);
-
- assert(sec_attr <= TZC_REGION_S_RDWR);
-
- /*
- * Inputs look ok, start programming registers.
- * All the address registers are 32 bits wide and have a LOW and HIGH
- * component used to construct a up to a 64bit address.
- */
- tzc_write_region_base_low(tzc.base, region,
- (uint32_t)(region_base));
- tzc_write_region_base_high(tzc.base, region,
- (uint32_t)(region_base >> 32));
-
- tzc_write_region_top_low(tzc.base, region,
- (uint32_t)(region_top));
- tzc_write_region_top_high(tzc.base, region,
- (uint32_t)(region_top >> 32));
-
- /* Assign the region to a filter and set secure attributes */
- tzc_write_region_attributes(tzc.base, region,
- (sec_attr << REG_ATTR_SEC_SHIFT) | filters);
-
- /*
- * Specify which non-secure devices have permission to access this
- * region.
- */
- tzc_write_region_id_access(tzc.base, region, ns_device_access);
-}
-
-
-void tzc_set_action(tzc_action_t action)
-{
- assert(tzc.base);
-
- /*
- * - Currently no handler is provided to trap an error via interrupt
- * or exception.
- * - The interrupt action has not been tested.
- */
- tzc_write_action(tzc.base, action);
-}
-
-
-void tzc_enable_filters(void)
-{
- uint32_t state;
- uint32_t filter;
-
- assert(tzc.base);
-
- for (filter = 0; filter < tzc.num_filters; filter++) {
- state = tzc_get_gate_keeper(tzc.base, filter);
- if (state) {
- /* The TZC filter is already configured. Changing the
- * programmer's view in an active system can cause
- * unpredictable behavior therefore panic for now rather
- * than try to determine whether this is safe in this
- * instance. See:
- * http://infocenter.arm.com/help/index.jsp?\
- * topic=/com.arm.doc.ddi0504c/CJHHECBF.html */
- ERROR("TZC : Filter %d Gatekeeper already enabled.\n",
- filter);
- panic();
- }
- tzc_set_gate_keeper(tzc.base, filter, 1);
- }
-}
-
-
-void tzc_disable_filters(void)
-{
- uint32_t filter;
-
- assert(tzc.base);
-
- /*
- * We don't do the same state check as above as the Gatekeepers are
- * disabled after reset.
- */
- for (filter = 0; filter < tzc.num_filters; filter++)
- tzc_set_gate_keeper(tzc.base, filter, 0);
-}
+#if ERROR_DEPRECATED
+#error "Using deprecated TZC-400 source file"
+#else
+#include "../tzc/tzc400.c"
+#endif /* ERROR_DEPRECATED */
diff --git a/include/drivers/arm/tzc400.h b/include/drivers/arm/tzc400.h
index f8e1664..3085688 100644
--- a/include/drivers/arm/tzc400.h
+++ b/include/drivers/arm/tzc400.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2014-2015, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2014-2016, 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:
@@ -31,178 +31,179 @@
#ifndef __TZC400_H__
#define __TZC400_H__
+#include <tzc_common.h>
-#define BUILD_CONFIG_OFF 0x000
-#define ACTION_OFF 0x004
-#define GATE_KEEPER_OFF 0x008
-#define SPECULATION_CTRL_OFF 0x00c
-#define INT_STATUS 0x010
-#define INT_CLEAR 0x014
+#define BUILD_CONFIG_OFF 0x000
+#define GATE_KEEPER_OFF 0x008
+#define SPECULATION_CTRL_OFF 0x00c
+#define INT_STATUS 0x010
+#define INT_CLEAR 0x014
-#define FAIL_ADDRESS_LOW_OFF 0x020
-#define FAIL_ADDRESS_HIGH_OFF 0x024
-#define FAIL_CONTROL_OFF 0x028
-#define FAIL_ID 0x02c
+#define FAIL_ADDRESS_LOW_OFF 0x020
+#define FAIL_ADDRESS_HIGH_OFF 0x024
+#define FAIL_CONTROL_OFF 0x028
+#define FAIL_ID 0x02c
-#define REGION_BASE_LOW_OFF 0x100
-#define REGION_BASE_HIGH_OFF 0x104
-#define REGION_TOP_LOW_OFF 0x108
-#define REGION_TOP_HIGH_OFF 0x10c
-#define REGION_ATTRIBUTES_OFF 0x110
-#define REGION_ID_ACCESS_OFF 0x114
-#define REGION_NUM_OFF(region) (0x20 * region)
+/* ID registers not common across different varieties of TZC */
+#define PID5 0xFD4
+#define PID6 0xFD8
+#define PID7 0xFDC
-/* ID Registers */
-#define PID0_OFF 0xfe0
-#define PID1_OFF 0xfe4
-#define PID2_OFF 0xfe8
-#define PID3_OFF 0xfec
-#define PID4_OFF 0xfd0
-#define PID5_OFF 0xfd4
-#define PID6_OFF 0xfd8
-#define PID7_OFF 0xfdc
-#define CID0_OFF 0xff0
-#define CID1_OFF 0xff4
-#define CID2_OFF 0xff8
-#define CID3_OFF 0xffc
-
-#define BUILD_CONFIG_NF_SHIFT 24
-#define BUILD_CONFIG_NF_MASK 0x3
-#define BUILD_CONFIG_AW_SHIFT 8
-#define BUILD_CONFIG_AW_MASK 0x3f
-#define BUILD_CONFIG_NR_SHIFT 0
-#define BUILD_CONFIG_NR_MASK 0x1f
-
-/* Not describing the case where regions 1 to 8 overlap */
-#define ACTION_RV_SHIFT 0
-#define ACTION_RV_MASK 0x3
-#define ACTION_RV_LOWOK 0x0
-#define ACTION_RV_LOWERR 0x1
-#define ACTION_RV_HIGHOK 0x2
-#define ACTION_RV_HIGHERR 0x3
+#define BUILD_CONFIG_NF_SHIFT 24
+#define BUILD_CONFIG_NF_MASK 0x3
+#define BUILD_CONFIG_AW_SHIFT 8
+#define BUILD_CONFIG_AW_MASK 0x3f
+#define BUILD_CONFIG_NR_SHIFT 0
+#define BUILD_CONFIG_NR_MASK 0x1f
/*
* Number of gate keepers is implementation defined. But we know the max for
* this device is 4. Get implementation details from BUILD_CONFIG.
*/
-#define GATE_KEEPER_OS_SHIFT 16
-#define GATE_KEEPER_OS_MASK 0xf
-#define GATE_KEEPER_OR_SHIFT 0
-#define GATE_KEEPER_OR_MASK 0xf
-#define GATE_KEEPER_FILTER_MASK 0x1
+#define GATE_KEEPER_OS_SHIFT 16
+#define GATE_KEEPER_OS_MASK 0xf
+#define GATE_KEEPER_OR_SHIFT 0
+#define GATE_KEEPER_OR_MASK 0xf
+#define GATE_KEEPER_FILTER_MASK 0x1
/* Speculation is enabled by default. */
-#define SPECULATION_CTRL_WRITE_DISABLE (1 << 1)
-#define SPECULATION_CTRL_READ_DISABLE (1 << 0)
+#define SPECULATION_CTRL_WRITE_DISABLE (1 << 1)
+#define SPECULATION_CTRL_READ_DISABLE (1 << 0)
/* Max number of filters allowed is 4. */
-#define INT_STATUS_OVERLAP_SHIFT 16
-#define INT_STATUS_OVERLAP_MASK 0xf
-#define INT_STATUS_OVERRUN_SHIFT 8
-#define INT_STATUS_OVERRUN_MASK 0xf
-#define INT_STATUS_STATUS_SHIFT 0
-#define INT_STATUS_STATUS_MASK 0xf
+#define INT_STATUS_OVERLAP_SHIFT 16
+#define INT_STATUS_OVERLAP_MASK 0xf
+#define INT_STATUS_OVERRUN_SHIFT 8
+#define INT_STATUS_OVERRUN_MASK 0xf
+#define INT_STATUS_STATUS_SHIFT 0
+#define INT_STATUS_STATUS_MASK 0xf
-#define INT_CLEAR_CLEAR_SHIFT 0
-#define INT_CLEAR_CLEAR_MASK 0xf
+#define INT_CLEAR_CLEAR_SHIFT 0
+#define INT_CLEAR_CLEAR_MASK 0xf
-#define FAIL_CONTROL_DIR_SHIFT (1 << 24)
-#define FAIL_CONTROL_DIR_READ 0x0
-#define FAIL_CONTROL_DIR_WRITE 0x1
-#define FAIL_CONTROL_NS_SHIFT (1 << 21)
-#define FAIL_CONTROL_NS_SECURE 0x0
-#define FAIL_CONTROL_NS_NONSECURE 0x1
-#define FAIL_CONTROL_PRIV_SHIFT (1 << 20)
-#define FAIL_CONTROL_PRIV_PRIV 0x0
-#define FAIL_CONTROL_PRIV_UNPRIV 0x1
+#define FAIL_CONTROL_DIR_SHIFT (1 << 24)
+#define FAIL_CONTROL_DIR_READ 0x0
+#define FAIL_CONTROL_DIR_WRITE 0x1
+#define FAIL_CONTROL_NS_SHIFT (1 << 21)
+#define FAIL_CONTROL_NS_SECURE 0x0
+#define FAIL_CONTROL_NS_NONSECURE 0x1
+#define FAIL_CONTROL_PRIV_SHIFT (1 << 20)
+#define FAIL_CONTROL_PRIV_PRIV 0x0
+#define FAIL_CONTROL_PRIV_UNPRIV 0x1
/*
* FAIL_ID_ID_MASK depends on AID_WIDTH which is platform specific.
* Platform should provide the value on initialisation.
*/
-#define FAIL_ID_VNET_SHIFT 24
-#define FAIL_ID_VNET_MASK 0xf
-#define FAIL_ID_ID_SHIFT 0
+#define FAIL_ID_VNET_SHIFT 24
+#define FAIL_ID_VNET_MASK 0xf
+#define FAIL_ID_ID_SHIFT 0
-/* Used along with 'tzc_region_attributes_t' below */
-#define REG_ATTR_SEC_SHIFT 30
-#define REG_ATTR_F_EN_SHIFT 0
-#define REG_ATTR_F_EN_MASK 0xf
-#define REG_ATTR_FILTER_BIT(x) ((1 << x) << REG_ATTR_F_EN_SHIFT)
-#define REG_ATTR_FILTER_BIT_ALL (REG_ATTR_F_EN_MASK << \
- REG_ATTR_F_EN_SHIFT)
+#define TZC_400_PERIPHERAL_ID 0x460
-#define REGION_ID_ACCESS_NSAID_WR_EN_SHIFT 16
-#define REGION_ID_ACCESS_NSAID_RD_EN_SHIFT 0
-#define REGION_ID_ACCESS_NSAID_ID_MASK 0xf
+/* Filter enable bits in a TZC */
+#define TZC_400_REGION_ATTR_F_EN_MASK 0xf
+#define TZC_400_REGION_ATTR_FILTER_BIT(x) ((1 << x) \
+ << TZC_REGION_ATTR_F_EN_SHIFT)
+#define TZC_400_REGION_ATTR_FILTER_BIT_ALL \
+ (TZC_400_REGION_ATTR_F_EN_MASK << \
+ TZC_REGION_ATTR_F_EN_SHIFT)
+/*
+ * Define some macros for backward compatibility with existing tzc400 clients.
+ */
+#if !ERROR_DEPRECATED
+#define REG_ATTR_FILTER_BIT(x) ((1 << x) \
+ << TZC_REGION_ATTR_F_EN_SHIFT)
+#define REG_ATTR_FILTER_BIT_ALL (TZC_400_REGION_ATTR_F_EN_MASK << \
+ TZC_REGION_ATTR_F_EN_SHIFT)
+#endif /* __ERROR_DEPRECATED__ */
-/* Macros for setting Region ID access permissions based on NSAID */
-#define TZC_REGION_ACCESS_RD(id) \
- ((1 << (id & REGION_ID_ACCESS_NSAID_ID_MASK)) << \
- REGION_ID_ACCESS_NSAID_RD_EN_SHIFT)
-#define TZC_REGION_ACCESS_WR(id) \
- ((1 << (id & REGION_ID_ACCESS_NSAID_ID_MASK)) << \
- REGION_ID_ACCESS_NSAID_WR_EN_SHIFT)
-#define TZC_REGION_ACCESS_RDWR(id) \
- (TZC_REGION_ACCESS_RD(id) | TZC_REGION_ACCESS_WR(id))
-
-/* Consist of part_number_1 and part_number_0 */
-#define TZC400_PERIPHERAL_ID 0x0460
-
-
+/*
+ * All TZC region configuration registers are placed one after another. It
+ * depicts size of block of registers for programming each region.
+ */
+#define TZC_400_REGION_SIZE 0x20
+#define TZC_400_ACTION_OFF 0x4
#ifndef __ASSEMBLY__
+#include <cdefs.h>
#include <stdint.h>
/*******************************************************************************
* Function & variable prototypes
******************************************************************************/
+void tzc400_init(uintptr_t base);
+void tzc400_configure_region0(tzc_region_attributes_t sec_attr,
+ unsigned int ns_device_access);
+void tzc400_configure_region(unsigned int filters,
+ int region,
+ uintptr_t region_base,
+ uintptr_t region_top,
+ tzc_region_attributes_t sec_attr,
+ unsigned int ns_device_access);
+void tzc400_set_action(tzc_action_t action);
+void tzc400_enable_filters(void);
+void tzc400_disable_filters(void);
/*
- * What type of action is expected when an access violation occurs.
- * The memory requested is zeroed. But we can also raise and event to
- * let the system know it happened.
- * We can raise an interrupt(INT) and/or cause an exception(ERR).
- * TZC_ACTION_NONE - No interrupt, no Exception
- * TZC_ACTION_ERR - No interrupt, raise exception -> sync external
- * data abort
- * TZC_ACTION_INT - Raise interrupt, no exception
- * TZC_ACTION_ERR_INT - Raise interrupt, raise exception -> sync
- * external data abort
+ * Deprecated APIs
*/
-typedef enum {
- TZC_ACTION_NONE = 0,
- TZC_ACTION_ERR = 1,
- TZC_ACTION_INT = 2,
- TZC_ACTION_ERR_INT = (TZC_ACTION_ERR | TZC_ACTION_INT)
-} tzc_action_t;
-
-/*
- * Controls secure access to a region. If not enabled secure access is not
- * allowed to region.
- */
-typedef enum {
- TZC_REGION_S_NONE = 0,
- TZC_REGION_S_RD = 1,
- TZC_REGION_S_WR = 2,
- TZC_REGION_S_RDWR = (TZC_REGION_S_RD | TZC_REGION_S_WR)
-} tzc_region_attributes_t;
-
-
-void tzc_init(uintptr_t base);
-void tzc_configure_region0(tzc_region_attributes_t sec_attr,
- uint32_t ns_device_access);
-void tzc_configure_region(uint32_t filters,
- uint8_t region,
- uint64_t region_base,
- uint64_t region_top,
+static inline void tzc_init(uintptr_t base) __deprecated;
+static inline void tzc_configure_region0(
tzc_region_attributes_t sec_attr,
- uint32_t ns_device_access);
-void tzc_enable_filters(void);
-void tzc_disable_filters(void);
-void tzc_set_action(tzc_action_t action);
+ unsigned int ns_device_access) __deprecated;
+static inline void tzc_configure_region(
+ unsigned int filters,
+ int region,
+ uintptr_t region_base,
+ uintptr_t region_top,
+ tzc_region_attributes_t sec_attr,
+ unsigned int ns_device_access) __deprecated;
+static inline void tzc_set_action(tzc_action_t action) __deprecated;
+static inline void tzc_enable_filters(void) __deprecated;
+static inline void tzc_disable_filters(void) __deprecated;
+
+static inline void tzc_init(uintptr_t base)
+{
+ tzc400_init(base);
+}
+
+static inline void tzc_configure_region0(
+ tzc_region_attributes_t sec_attr,
+ unsigned int ns_device_access)
+{
+ tzc400_configure_region0(sec_attr, ns_device_access);
+}
+
+static inline void tzc_configure_region(
+ unsigned int filters,
+ int region,
+ uintptr_t region_base,
+ uintptr_t region_top,
+ tzc_region_attributes_t sec_attr,
+ unsigned int ns_device_access)
+{
+ tzc400_configure_region(filters, region, region_base,
+ region_top, sec_attr, ns_device_access);
+}
+
+static inline void tzc_set_action(tzc_action_t action)
+{
+ tzc400_set_action(action);
+}
+
+
+static inline void tzc_enable_filters(void)
+{
+ tzc400_enable_filters();
+}
+
+static inline void tzc_disable_filters(void)
+{
+ tzc400_disable_filters();
+}
#endif /* __ASSEMBLY__ */
diff --git a/include/drivers/arm/tzc_common.h b/include/drivers/arm/tzc_common.h
new file mode 100644
index 0000000..9b73c3f
--- /dev/null
+++ b/include/drivers/arm/tzc_common.h
@@ -0,0 +1,119 @@
+/*
+ * 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.
+ */
+
+#ifndef __TZC_COMMON_H__
+#define __TZC_COMMON_H__
+
+/*
+ * Offset of core registers from the start of the base of configuration
+ * registers for each region.
+ */
+
+/* ID Registers */
+#define PID0_OFF 0xfe0
+#define PID1_OFF 0xfe4
+#define PID2_OFF 0xfe8
+#define PID3_OFF 0xfec
+#define PID4_OFF 0xfd0
+#define CID0_OFF 0xff0
+#define CID1_OFF 0xff4
+#define CID2_OFF 0xff8
+#define CID3_OFF 0xffc
+
+/* Bit positions of TZC_ACTION registers */
+#define TZC_ACTION_RV_SHIFT 0
+#define TZC_ACTION_RV_MASK 0x3
+#define TZC_ACTION_RV_LOWOK 0x0
+#define TZC_ACTION_RV_LOWERR 0x1
+#define TZC_ACTION_RV_HIGHOK 0x2
+#define TZC_ACTION_RV_HIGHERR 0x3
+
+/* Used along with 'tzc_region_attributes_t' below */
+#define TZC_REGION_ATTR_S_RD_SHIFT 30
+#define TZC_REGION_ATTR_S_WR_SHIFT 31
+#define TZC_REGION_ATTR_F_EN_SHIFT 0
+#define TZC_REGION_ATTR_SEC_SHIFT 30
+#define TZC_REGION_ATTR_S_RD_MASK 0x1
+#define TZC_REGION_ATTR_S_WR_MASK 0x1
+#define TZC_REGION_ATTR_SEC_MASK 0x3
+
+#define TZC_REGION_ACCESS_WR_EN_SHIFT 16
+#define TZC_REGION_ACCESS_RD_EN_SHIFT 0
+#define TZC_REGION_ACCESS_ID_MASK 0xf
+
+/* Macros for allowing Non-Secure access to a region based on NSAID */
+#define TZC_REGION_ACCESS_RD(nsaid) \
+ ((1 << (nsaid & TZC_REGION_ACCESS_ID_MASK)) << \
+ TZC_REGION_ACCESS_RD_EN_SHIFT)
+#define TZC_REGION_ACCESS_WR(nsaid) \
+ ((1 << (nsaid & TZC_REGION_ACCESS_ID_MASK)) << \
+ TZC_REGION_ACCESS_WR_EN_SHIFT)
+#define TZC_REGION_ACCESS_RDWR(nsaid) \
+ (TZC_REGION_ACCESS_RD(nsaid) | \
+ TZC_REGION_ACCESS_WR(nsaid))
+
+#ifndef __ASSEMBLY__
+
+/* Returns offset of registers to program for a given region no */
+#define TZC_REGION_OFFSET(region_size, region_no) \
+ ((region_size) * (region_no))
+
+/*
+ * What type of action is expected when an access violation occurs.
+ * The memory requested is returned as zero. But we can also raise an event to
+ * let the system know it happened.
+ * We can raise an interrupt(INT) and/or cause an exception(ERR).
+ * TZC_ACTION_NONE - No interrupt, no Exception
+ * TZC_ACTION_ERR - No interrupt, raise exception -> sync external
+ * data abort
+ * TZC_ACTION_INT - Raise interrupt, no exception
+ * TZC_ACTION_ERR_INT - Raise interrupt, raise exception -> sync
+ * external data abort
+ */
+typedef enum {
+ TZC_ACTION_NONE = 0,
+ TZC_ACTION_ERR = 1,
+ TZC_ACTION_INT = 2,
+ TZC_ACTION_ERR_INT = (TZC_ACTION_ERR | TZC_ACTION_INT)
+} tzc_action_t;
+
+/*
+ * Controls secure access to a region. If not enabled secure access is not
+ * allowed to region.
+ */
+typedef enum {
+ TZC_REGION_S_NONE = 0,
+ TZC_REGION_S_RD = 1,
+ TZC_REGION_S_WR = 2,
+ TZC_REGION_S_RDWR = (TZC_REGION_S_RD | TZC_REGION_S_WR)
+} tzc_region_attributes_t;
+
+#endif /* __ASSEMBLY__ */
+#endif /* __TZC_COMMON_H__ */
