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Diffstat (limited to 'include/drivers/arm/tzc_common.h')
| -rw-r--r-- | include/drivers/arm/tzc_common.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/include/drivers/arm/tzc_common.h b/include/drivers/arm/tzc_common.h new file mode 100644 index 0000000..e58201c --- /dev/null +++ b/include/drivers/arm/tzc_common.h @@ -0,0 +1,89 @@ +/* + * Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef TZC_COMMON_H +#define TZC_COMMON_H + +#include <lib/utils_def.h> + +/* + * Offset of core registers from the start of the base of configuration + * registers for each region. + */ + +/* ID Registers */ +#define PID0_OFF U(0xfe0) +#define PID1_OFF U(0xfe4) +#define PID2_OFF U(0xfe8) +#define PID3_OFF U(0xfec) +#define PID4_OFF U(0xfd0) +#define CID0_OFF U(0xff0) +#define CID1_OFF U(0xff4) +#define CID2_OFF U(0xff8) +#define CID3_OFF U(0xffc) + +/* + * 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 + */ +#define TZC_ACTION_NONE U(0) +#define TZC_ACTION_ERR U(1) +#define TZC_ACTION_INT U(2) +#define TZC_ACTION_ERR_INT (TZC_ACTION_ERR | TZC_ACTION_INT) + +/* Bit positions of TZC_ACTION registers */ +#define TZC_ACTION_RV_SHIFT 0 +#define TZC_ACTION_RV_MASK U(0x3) +#define TZC_ACTION_RV_LOWOK U(0x0) +#define TZC_ACTION_RV_LOWERR U(0x1) +#define TZC_ACTION_RV_HIGHOK U(0x2) +#define TZC_ACTION_RV_HIGHERR U(0x3) + +/* + * Controls secure access to a region. If not enabled secure access is not + * allowed to region. + */ +#define TZC_REGION_S_NONE U(0) +#define TZC_REGION_S_RD U(1) +#define TZC_REGION_S_WR U(2) +#define TZC_REGION_S_RDWR (TZC_REGION_S_RD | TZC_REGION_S_WR) + +#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 U(0x1) +#define TZC_REGION_ATTR_S_WR_MASK U(0x1) +#define TZC_REGION_ATTR_SEC_MASK U(0x3) + +#define TZC_REGION_ACCESS_WR_EN_SHIFT 16 +#define TZC_REGION_ACCESS_RD_EN_SHIFT 0 +#define TZC_REGION_ACCESS_ID_MASK U(0xf) + +/* Macros for allowing Non-Secure access to a region based on NSAID */ +#define TZC_REGION_ACCESS_RD(nsaid) \ + ((U(1) << ((nsaid) & TZC_REGION_ACCESS_ID_MASK)) << \ + TZC_REGION_ACCESS_RD_EN_SHIFT) +#define TZC_REGION_ACCESS_WR(nsaid) \ + ((U(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)) + +/* Returns offset of registers to program for a given region no */ +#define TZC_REGION_OFFSET(region_size, region_no) \ + ((region_size) * (region_no)) + +#endif /* TZC_COMMON_H */ |