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Diffstat (limited to 'include/drivers/arm/tzc_common.h')
| -rw-r--r-- | include/drivers/arm/tzc_common.h | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/include/drivers/arm/tzc_common.h b/include/drivers/arm/tzc_common.h new file mode 100644 index 00000000..9b73c3f8 --- /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__ */ |