/*
* Copyright (c) 2013-2014, 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 __ARCH_H__
#define __ARCH_H__
/*******************************************************************************
* MIDR bit definitions
******************************************************************************/
#define MIDR_VAR_MASK 0xf
#define MIDR_REV_MASK 0xf
#define MIDR_PN_MASK 0xfff
#define MIDR_VAR_SHIFT 20
#define MIDR_REV_SHIFT 0
#define MIDR_PN_SHIFT 4
#define MIDR_PN_AEM 0xd0f
#define MIDR_PN_A57 0xd07
#define MIDR_PN_A53 0xd03
/*******************************************************************************
* MPIDR macros
******************************************************************************/
#define MPIDR_CPU_MASK MPIDR_AFFLVL_MASK
#define MPIDR_CLUSTER_MASK MPIDR_AFFLVL_MASK << MPIDR_AFFINITY_BITS
#define MPIDR_AFFINITY_BITS 8
#define MPIDR_AFFLVL_MASK 0xff
#define MPIDR_AFF0_SHIFT 0
#define MPIDR_AFF1_SHIFT 8
#define MPIDR_AFF2_SHIFT 16
#define MPIDR_AFF3_SHIFT 32
#define MPIDR_AFFINITY_MASK 0xff00ffffff
#define MPIDR_AFFLVL_SHIFT 3
#define MPIDR_AFFLVL0 0
#define MPIDR_AFFLVL1 1
#define MPIDR_AFFLVL2 2
#define MPIDR_AFFLVL3 3
/* TODO: Support only the first 3 affinity levels for now */
#define MPIDR_MAX_AFFLVL 2
/* Constant to highlight the assumption that MPIDR allocation starts from 0 */
#define FIRST_MPIDR 0
/*******************************************************************************
* Implementation defined sysreg encodings
******************************************************************************/
#define CPUECTLR_EL1 S3_1_C15_C2_1
#define CPUACTLR_EL1 S3_1_C15_C2_0
/*******************************************************************************
* Generic timer memory mapped registers & offsets
******************************************************************************/
#define CNTCR_OFF 0x000
#define CNTFID_OFF 0x020
#define CNTCR_EN (1 << 0)
#define CNTCR_HDBG (1 << 1)
#define CNTCR_FCREQ(x) ((x) << 8)
/*******************************************************************************
* System register bit definitions
******************************************************************************/
/* CLIDR definitions */
#define LOUIS_SHIFT 21
#define LOC_SHIFT 24
#define CLIDR_FIELD_WIDTH 3
/* CSSELR definitions */
#define LEVEL_SHIFT 1
/* D$ set/way op type defines */
#define DCISW 0x0
#define DCCISW 0x1
#define DCCSW 0x2
/* ID_AA64PFR0_EL1 definitions */
#define ID_AA64PFR0_EL0_SHIFT 0
#define ID_AA64PFR0_EL1_SHIFT 4
#define ID_AA64PFR0_EL2_SHIFT 8
#define ID_AA64PFR0_EL3_SHIFT 12
#define ID_AA64PFR0_ELX_MASK 0xf
/* ID_PFR1_EL1 definitions */
#define ID_PFR1_VIRTEXT_SHIFT 12
#define ID_PFR1_VIRTEXT_MASK 0xf
#define GET_VIRT_EXT(id) ((id >> ID_PFR1_VIRTEXT_SHIFT) \
& ID_PFR1_VIRTEXT_MASK)
/* SCTLR definitions */
#define SCTLR_EL2_RES1 ((1 << 29) | (1 << 28) | (1 << 23) | (1 << 22) | \
(1 << 18) | (1 << 16) | (1 << 11) | (1 << 5) | \
(1 << 4))
#define SCTLR_EL1_RES1 ((1 << 29) | (1 << 28) | (1 << 23) | (1 << 22) | \
(1 << 11))
#define SCTLR_M_BIT (1 << 0)
#define SCTLR_A_BIT (1 << 1)
#define SCTLR_C_BIT (1 << 2)
#define SCTLR_SA_BIT (1 << 3)
#define SCTLR_B_BIT (1 << 7)
#define SCTLR_Z_BIT (1 << 11)
#define SCTLR_I_BIT (1 << 12)
#define SCTLR_WXN_BIT (1 << 19)
#define SCTLR_EXCEPTION_BITS (0x3 << 6)
#define SCTLR_EE_BIT (1 << 25)
/* CPACR_El1 definitions */
#define CPACR_EL1_FPEN(x) (x << 20)
#define CPACR_EL1_FP_TRAP_EL0 0x1
#define CPACR_EL1_FP_TRAP_ALL 0x2
#define CPACR_EL1_FP_TRAP_NONE 0x3
/* SCR definitions */
#define SCR_RES1_BITS ((1 << 4) | (1 << 5))
#define SCR_TWE_BIT (1 << 13)
#define SCR_TWI_BIT (1 << 12)
#define SCR_ST_BIT (1 << 11)
#define SCR_RW_BIT (1 << 10)
#define SCR_SIF_BIT (1 << 9)
#define SCR_HCE_BIT (1 << 8)
#define SCR_SMD_BIT (1 << 7)
#define SCR_EA_BIT (1 << 3)
#define SCR_FIQ_BIT (1 << 2)
#define SCR_IRQ_BIT (1 << 1)
#define SCR_NS_BIT (1 << 0)
#define SCR_VALID_BIT_MASK 0x2f8f
/* HCR definitions */
#define HCR_RW_BIT (1ull << 31)
#define HCR_AMO_BIT (1 << 5)
#define HCR_IMO_BIT (1 << 4)
#define HCR_FMO_BIT (1 << 3)
/* CNTHCTL_EL2 definitions */
#define EL1PCEN_BIT (1 << 1)
#define EL1PCTEN_BIT (1 << 0)
/* CNTKCTL_EL1 definitions */
#define EL0PTEN_BIT (1 << 9)
#define EL0VTEN_BIT (1 << 8)
#define EL0PCTEN_BIT (1 << 0)
#define EL0VCTEN_BIT (1 << 1)
#define EVNTEN_BIT (1 << 2)
#define EVNTDIR_BIT (1 << 3)
#define EVNTI_SHIFT 4
#define EVNTI_MASK 0xf
/* CPTR_EL3 definitions */
#define TCPAC_BIT (1 << 31)
#define TTA_BIT (1 << 20)
#define TFP_BIT (1 << 10)
/* CPSR/SPSR definitions */
#define DAIF_FIQ_BIT (1 << 0)
#define DAIF_IRQ_BIT (1 << 1)
#define DAIF_ABT_BIT (1 << 2)
#define DAIF_DBG_BIT (1 << 3)
#define SPSR_DAIF_SHIFT 6
#define SPSR_DAIF_MASK 0xf
#define SPSR_AIF_SHIFT 6
#define SPSR_AIF_MASK 0x7
#define SPSR_E_SHIFT 9
#define SPSR_E_MASK 0x1
#define SPSR_E_LITTLE 0x0
#define SPSR_E_BIG 0x1
#define SPSR_T_SHIFT 5
#define SPSR_T_MASK 0x1
#define SPSR_T_ARM 0x0
#define SPSR_T_THUMB 0x1
#define DISABLE_ALL_EXCEPTIONS \
(DAIF_FIQ_BIT | DAIF_IRQ_BIT | DAIF_ABT_BIT | DAIF_DBG_BIT)
/*
* TCR defintions
*/
#define TCR_EL3_RES1 ((1UL << 31) | (1UL << 23))
#define TCR_T0SZ_4GB 32
#define TCR_RGN_INNER_NC (0x0 << 8)
#define TCR_RGN_INNER_WBA (0x1 << 8)
#define TCR_RGN_INNER_WT (0x2 << 8)
#define TCR_RGN_INNER_WBNA (0x3 << 8)
#define TCR_RGN_OUTER_NC (0x0 << 10)
#define TCR_RGN_OUTER_WBA (0x1 << 10)
#define TCR_RGN_OUTER_WT (0x2 << 10)
#define TCR_RGN_OUTER_WBNA (0x3 << 10)
#define TCR_SH_NON_SHAREABLE (0x0 << 12)
#define TCR_SH_OUTER_SHAREABLE (0x2 << 12)
#define TCR_SH_INNER_SHAREABLE (0x3 << 12)
#define MODE_SP_SHIFT 0x0
#define MODE_SP_MASK 0x1
#define MODE_SP_EL0 0x0
#define MODE_SP_ELX 0x1
#define MODE_RW_SHIFT 0x4
#define MODE_RW_MASK 0x1
#define MODE_RW_64 0x0
#define MODE_RW_32 0x1
#define MODE_EL_SHIFT 0x2
#define MODE_EL_MASK 0x3
#define MODE_EL3 0x3
#define MODE_EL2 0x2
#define MODE_EL1 0x1
#define MODE_EL0 0x0
#define MODE32_SHIFT 0
#define MODE32_MASK 0xf
#define MODE32_usr 0x0
#define MODE32_fiq 0x1
#define MODE32_irq 0x2
#define MODE32_svc 0x3
#define MODE32_mon 0x6
#define MODE32_abt 0x7
#define MODE32_hyp 0xa
#define MODE32_und 0xb
#define MODE32_sys 0xf
#define GET_RW(mode) (((mode) >> MODE_RW_SHIFT) & MODE_RW_MASK)
#define GET_EL(mode) (((mode) >> MODE_EL_SHIFT) & MODE_EL_MASK)
#define GET_SP(mode) (((mode) >> MODE_SP_SHIFT) & MODE_SP_MASK)
#define GET_M32(mode) (((mode) >> MODE32_SHIFT) & MODE32_MASK)
#define SPSR_64(el, sp, daif) \
(MODE_RW_64 << MODE_RW_SHIFT | \
((el) & MODE_EL_MASK) << MODE_EL_SHIFT | \
((sp) & MODE_SP_MASK) << MODE_SP_SHIFT | \
((daif) & SPSR_DAIF_MASK) << SPSR_DAIF_SHIFT)
#define SPSR_MODE32(mode, isa, endian, aif) \
(MODE_RW_32 << MODE_RW_SHIFT | \
((mode) & MODE32_MASK) << MODE32_SHIFT | \
((isa) & SPSR_T_MASK) << SPSR_T_SHIFT | \
((endian) & SPSR_E_MASK) << SPSR_E_SHIFT | \
((aif) & SPSR_AIF_MASK) << SPSR_AIF_SHIFT)
/* Physical timer control register bit fields shifts and masks */
#define CNTP_CTL_ENABLE_SHIFT 0
#define CNTP_CTL_IMASK_SHIFT 1
#define CNTP_CTL_ISTATUS_SHIFT 2
#define CNTP_CTL_ENABLE_MASK 1
#define CNTP_CTL_IMASK_MASK 1
#define CNTP_CTL_ISTATUS_MASK 1
#define get_cntp_ctl_enable(x) ((x >> CNTP_CTL_ENABLE_SHIFT) & \
CNTP_CTL_ENABLE_MASK)
#define get_cntp_ctl_imask(x) ((x >> CNTP_CTL_IMASK_SHIFT) & \
CNTP_CTL_IMASK_MASK)
#define get_cntp_ctl_istatus(x) ((x >> CNTP_CTL_ISTATUS_SHIFT) & \
CNTP_CTL_ISTATUS_MASK)
#define set_cntp_ctl_enable(x) (x |= 1 << CNTP_CTL_ENABLE_SHIFT)
#define set_cntp_ctl_imask(x) (x |= 1 << CNTP_CTL_IMASK_SHIFT)
#define clr_cntp_ctl_enable(x) (x &= ~(1 << CNTP_CTL_ENABLE_SHIFT))
#define clr_cntp_ctl_imask(x) (x &= ~(1 << CNTP_CTL_IMASK_SHIFT))
/* Miscellaneous MMU related constants */
#define NUM_2MB_IN_GB (1 << 9)
#define NUM_4K_IN_2MB (1 << 9)
#define NUM_GB_IN_4GB (1 << 2)
#define TWO_MB_SHIFT 21
#define ONE_GB_SHIFT 30
#define FOUR_KB_SHIFT 12
#define ONE_GB_INDEX(x) ((x) >> ONE_GB_SHIFT)
#define TWO_MB_INDEX(x) ((x) >> TWO_MB_SHIFT)
#define FOUR_KB_INDEX(x) ((x) >> FOUR_KB_SHIFT)
#define INVALID_DESC 0x0
#define BLOCK_DESC 0x1
#define TABLE_DESC 0x3
#define FIRST_LEVEL_DESC_N ONE_GB_SHIFT
#define SECOND_LEVEL_DESC_N TWO_MB_SHIFT
#define THIRD_LEVEL_DESC_N FOUR_KB_SHIFT
#define LEVEL1 1
#define LEVEL2 2
#define LEVEL3 3
#define XN (1ull << 2)
#define PXN (1ull << 1)
#define CONT_HINT (1ull << 0)
#define UPPER_ATTRS(x) (x & 0x7) << 52
#define NON_GLOBAL (1 << 9)
#define ACCESS_FLAG (1 << 8)
#define NSH (0x0 << 6)
#define OSH (0x2 << 6)
#define ISH (0x3 << 6)
#define PAGE_SIZE_SHIFT FOUR_KB_SHIFT
#define PAGE_SIZE (1 << PAGE_SIZE_SHIFT)
#define PAGE_SIZE_MASK (PAGE_SIZE - 1)
#define IS_PAGE_ALIGNED(addr) (((addr) & PAGE_SIZE_MASK) == 0)
#define XLAT_ENTRY_SIZE_SHIFT 3 /* Each MMU table entry is 8 bytes (1 << 3) */
#define XLAT_ENTRY_SIZE (1 << XLAT_ENTRY_SIZE_SHIFT)
#define XLAT_TABLE_SIZE_SHIFT PAGE_SIZE_SHIFT
#define XLAT_TABLE_SIZE (1 << XLAT_TABLE_SIZE_SHIFT)
/* Values for number of entries in each MMU translation table */
#define XLAT_TABLE_ENTRIES_SHIFT (XLAT_TABLE_SIZE_SHIFT - XLAT_ENTRY_SIZE_SHIFT)
#define XLAT_TABLE_ENTRIES (1 << XLAT_TABLE_ENTRIES_SHIFT)
#define XLAT_TABLE_ENTRIES_MASK (XLAT_TABLE_ENTRIES - 1)
/* Values to convert a memory address to an index into a translation table */
#define L3_XLAT_ADDRESS_SHIFT PAGE_SIZE_SHIFT
#define L2_XLAT_ADDRESS_SHIFT (L3_XLAT_ADDRESS_SHIFT + XLAT_TABLE_ENTRIES_SHIFT)
#define L1_XLAT_ADDRESS_SHIFT (L2_XLAT_ADDRESS_SHIFT + XLAT_TABLE_ENTRIES_SHIFT)
/*
* AP[1] bit is ignored by hardware and is
* treated as if it is One in EL2/EL3
*/
#define AP_RO (0x1 << 5)
#define AP_RW (0x0 << 5)
#define NS (0x1 << 3)
#define ATTR_SO_INDEX 0x2
#define ATTR_DEVICE_INDEX 0x1
#define ATTR_IWBWA_OWBWA_NTR_INDEX 0x0
#define LOWER_ATTRS(x) (((x) & 0xfff) << 2)
#define ATTR_SO (0x0)
#define ATTR_DEVICE (0x4)
#define ATTR_IWBWA_OWBWA_NTR (0xff)
#define MAIR_ATTR_SET(attr, index) (attr << (index << 3))
/* Exception Syndrome register bits and bobs */
#define ESR_EC_SHIFT 26
#define ESR_EC_MASK 0x3f
#define ESR_EC_LENGTH 6
#define EC_UNKNOWN 0x0
#define EC_WFE_WFI 0x1
#define EC_AARCH32_CP15_MRC_MCR 0x3
#define EC_AARCH32_CP15_MRRC_MCRR 0x4
#define EC_AARCH32_CP14_MRC_MCR 0x5
#define EC_AARCH32_CP14_LDC_STC 0x6
#define EC_FP_SIMD 0x7
#define EC_AARCH32_CP10_MRC 0x8
#define EC_AARCH32_CP14_MRRC_MCRR 0xc
#define EC_ILLEGAL 0xe
#define EC_AARCH32_SVC 0x11
#define EC_AARCH32_HVC 0x12
#define EC_AARCH32_SMC 0x13
#define EC_AARCH64_SVC 0x15
#define EC_AARCH64_HVC 0x16
#define EC_AARCH64_SMC 0x17
#define EC_AARCH64_SYS 0x18
#define EC_IABORT_LOWER_EL 0x20
#define EC_IABORT_CUR_EL 0x21
#define EC_PC_ALIGN 0x22
#define EC_DABORT_LOWER_EL 0x24
#define EC_DABORT_CUR_EL 0x25
#define EC_SP_ALIGN 0x26
#define EC_AARCH32_FP 0x28
#define EC_AARCH64_FP 0x2c
#define EC_SERROR 0x2f
#define EC_BITS(x) (x >> ESR_EC_SHIFT) & ESR_EC_MASK
/*******************************************************************************
* Imp. Def. register defines.
******************************************************************************/
/* CPUECTLR definitions */
#define CPUECTLR_SMP_BIT (1 << 6)
/* A57 CPUACTLR definitions */
#define CPUACTLR_NO_ALLOC_WBWA (1 << 49)
#define CPUACTLR_DCC_AS_DCCI (1 << 44)
/*******************************************************************************
* Definitions of register offsets and fields in the CNTCTLBase Frame of the
* system level implementation of the Generic Timer.
******************************************************************************/
#define CNTNSAR 0x4
#define CNTNSAR_NS_SHIFT(x) x
#define CNTACR_BASE(x) (0x40 + (x << 2))
#define CNTACR_RPCT_SHIFT 0x0
#define CNTACR_RVCT_SHIFT 0x1
#define CNTACR_RFRQ_SHIFT 0x2
#define CNTACR_RVOFF_SHIFT 0x3
#define CNTACR_RWVT_SHIFT 0x4
#define CNTACR_RWPT_SHIFT 0x5
#endif /* __ARCH_H__ */
