arch.h

/*
 * Copyright (c) 2013-2017, ARM Limited and Contributors. All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

#ifndef __ARCH_H__
#define __ARCH_H__

#include <utils_def.h>

/*******************************************************************************
 * MIDR bit definitions
 ******************************************************************************/
#define MIDR_IMPL_MASK		U(0xff)
#define MIDR_IMPL_SHIFT		U(0x18)
#define MIDR_VAR_SHIFT		U(20)
#define MIDR_VAR_BITS		U(4)
#define MIDR_VAR_MASK		U(0xf)
#define MIDR_REV_SHIFT		U(0)
#define MIDR_REV_BITS		U(4)
#define MIDR_REV_MASK		U(0xf)
#define MIDR_PN_MASK		U(0xfff)
#define MIDR_PN_SHIFT		U(0x4)

/*******************************************************************************
 * MPIDR macros
 ******************************************************************************/
#define MPIDR_MT_MASK		(U(1) << 24)
#define MPIDR_CPU_MASK		MPIDR_AFFLVL_MASK
#define MPIDR_CLUSTER_MASK	(MPIDR_AFFLVL_MASK << MPIDR_AFFINITY_BITS)
#define MPIDR_AFFINITY_BITS	U(8)
#define MPIDR_AFFLVL_MASK	U(0xff)
#define MPIDR_AFF0_SHIFT	U(0)
#define MPIDR_AFF1_SHIFT	U(8)
#define MPIDR_AFF2_SHIFT	U(16)
#define MPIDR_AFF3_SHIFT	U(32)
#define MPIDR_AFFINITY_MASK	U(0xff00ffffff)
#define MPIDR_AFFLVL_SHIFT	U(3)
#define MPIDR_AFFLVL0		U(0)
#define MPIDR_AFFLVL1		U(1)
#define MPIDR_AFFLVL2		U(2)
#define MPIDR_AFFLVL3		U(3)
#define MPIDR_AFFLVL0_VAL(mpidr) \
		((mpidr >> MPIDR_AFF0_SHIFT) & MPIDR_AFFLVL_MASK)
#define MPIDR_AFFLVL1_VAL(mpidr) \
		((mpidr >> MPIDR_AFF1_SHIFT) & MPIDR_AFFLVL_MASK)
#define MPIDR_AFFLVL2_VAL(mpidr) \
		((mpidr >> MPIDR_AFF2_SHIFT) & MPIDR_AFFLVL_MASK)
#define MPIDR_AFFLVL3_VAL(mpidr) \
		((mpidr >> MPIDR_AFF3_SHIFT) & MPIDR_AFFLVL_MASK)
/*
 * The MPIDR_MAX_AFFLVL count starts from 0. Take care to
 * add one while using this macro to define array sizes.
 * TODO: Support only the first 3 affinity levels for now.
 */
#define MPIDR_MAX_AFFLVL	U(2)

/* Constant to highlight the assumption that MPIDR allocation starts from 0 */
#define FIRST_MPIDR		U(0)

/*******************************************************************************
 * Definitions for CPU system register interface to GICv3
 ******************************************************************************/
#define ICC_SRE_EL1     S3_0_C12_C12_5
#define ICC_SRE_EL2     S3_4_C12_C9_5
#define ICC_SRE_EL3     S3_6_C12_C12_5
#define ICC_CTLR_EL1    S3_0_C12_C12_4
#define ICC_CTLR_EL3    S3_6_C12_C12_4
#define ICC_PMR_EL1     S3_0_C4_C6_0
#define ICC_IGRPEN1_EL3 S3_6_c12_c12_7
#define ICC_IGRPEN0_EL1 S3_0_c12_c12_6
#define ICC_HPPIR0_EL1  S3_0_c12_c8_2
#define ICC_HPPIR1_EL1  S3_0_c12_c12_2
#define ICC_IAR0_EL1    S3_0_c12_c8_0
#define ICC_IAR1_EL1    S3_0_c12_c12_0
#define ICC_EOIR0_EL1   S3_0_c12_c8_1
#define ICC_EOIR1_EL1   S3_0_c12_c12_1

/*******************************************************************************
 * Generic timer memory mapped registers & offsets
 ******************************************************************************/
#define CNTCR_OFF			U(0x000)
#define CNTFID_OFF			U(0x020)

#define CNTCR_EN			(U(1) << 0)
#define CNTCR_HDBG			(U(1) << 1)
#define CNTCR_FCREQ(x)			((x) << 8)

/*******************************************************************************
 * System register bit definitions
 ******************************************************************************/
/* CLIDR definitions */
#define LOUIS_SHIFT		U(21)
#define LOC_SHIFT		U(24)
#define CLIDR_FIELD_WIDTH	U(3)

/* CSSELR definitions */
#define LEVEL_SHIFT		U(1)

/* D$ set/way op type defines */
#define DCISW			U(0x0)
#define DCCISW			U(0x1)
#define DCCSW			U(0x2)

/* ID_AA64PFR0_EL1 definitions */
#define ID_AA64PFR0_EL0_SHIFT	U(0)
#define ID_AA64PFR0_EL1_SHIFT	U(4)
#define ID_AA64PFR0_EL2_SHIFT	U(8)
#define ID_AA64PFR0_EL3_SHIFT	U(12)
#define ID_AA64PFR0_ELX_MASK	U(0xf)

#define EL_IMPL_NONE		U(0)
#define EL_IMPL_A64ONLY		U(1)
#define EL_IMPL_A64_A32		U(2)

#define ID_AA64PFR0_GIC_SHIFT	U(24)
#define ID_AA64PFR0_GIC_WIDTH	U(4)
#define ID_AA64PFR0_GIC_MASK	((U(1) << ID_AA64PFR0_GIC_WIDTH) - 1)

/* ID_AA64MMFR0_EL1 definitions */
#define ID_AA64MMFR0_EL1_PARANGE_MASK	U(0xf)

#define PARANGE_0000	U(32)
#define PARANGE_0001	U(36)
#define PARANGE_0010	U(40)
#define PARANGE_0011	U(42)
#define PARANGE_0100	U(44)
#define PARANGE_0101	U(48)

/* ID_PFR1_EL1 definitions */
#define ID_PFR1_VIRTEXT_SHIFT	U(12)
#define ID_PFR1_VIRTEXT_MASK	U(0xf)
#define GET_VIRT_EXT(id)	((id >> ID_PFR1_VIRTEXT_SHIFT) \
				 & ID_PFR1_VIRTEXT_MASK)

/* SCTLR definitions */
#define SCTLR_EL2_RES1  ((U(1) << 29) | (U(1) << 28) | (U(1) << 23) | \
			 (U(1) << 22) | (U(1) << 18) | (U(1) << 16) | \
			 (U(1) << 11) | (U(1) << 5) | (U(1) << 4))

#define SCTLR_EL1_RES1  ((U(1) << 29) | (U(1) << 28) | (U(1) << 23) | \
			 (U(1) << 22) | (U(1) << 20) | (U(1) << 11))
#define SCTLR_AARCH32_EL1_RES1 \
			((U(1) << 23) | (U(1) << 22) | (U(1) << 11) | \
			 (U(1) << 4) | (U(1) << 3))

#define SCTLR_M_BIT		(U(1) << 0)
#define SCTLR_A_BIT		(U(1) << 1)
#define SCTLR_C_BIT		(U(1) << 2)
#define SCTLR_SA_BIT		(U(1) << 3)
#define SCTLR_CP15BEN_BIT	(U(1) << 5)
#define SCTLR_I_BIT		(U(1) << 12)
#define SCTLR_NTWI_BIT		(U(1) << 16)
#define SCTLR_NTWE_BIT		(U(1) << 18)
#define SCTLR_WXN_BIT		(U(1) << 19)
#define SCTLR_EE_BIT		(U(1) << 25)

/* CPACR_El1 definitions */
#define CPACR_EL1_FPEN(x)	((x) << 20)
#define CPACR_EL1_FP_TRAP_EL0	U(0x1)
#define CPACR_EL1_FP_TRAP_ALL	U(0x2)
#define CPACR_EL1_FP_TRAP_NONE	U(0x3)

/* SCR definitions */
#define SCR_RES1_BITS		((U(1) << 4) | (U(1) << 5))
#define SCR_TWE_BIT		(U(1) << 13)
#define SCR_TWI_BIT		(U(1) << 12)
#define SCR_ST_BIT		(U(1) << 11)
#define SCR_RW_BIT		(U(1) << 10)
#define SCR_SIF_BIT		(U(1) << 9)
#define SCR_HCE_BIT		(U(1) << 8)
#define SCR_SMD_BIT		(U(1) << 7)
#define SCR_EA_BIT		(U(1) << 3)
#define SCR_FIQ_BIT		(U(1) << 2)
#define SCR_IRQ_BIT		(U(1) << 1)
#define SCR_NS_BIT		(U(1) << 0)
#define SCR_VALID_BIT_MASK	U(0x2f8f)

/* MDCR definitions */
#define MDCR_SPD32(x)		((x) << 14)
#define MDCR_SPD32_LEGACY	U(0x0)
#define MDCR_SPD32_DISABLE	U(0x2)
#define MDCR_SPD32_ENABLE	U(0x3)
#define MDCR_SDD_BIT		(U(1) << 16)

#define MDCR_DEF_VAL		(MDCR_SDD_BIT | MDCR_SPD32(MDCR_SPD32_DISABLE))

/* HCR definitions */
#define HCR_RW_SHIFT		U(31)
#define HCR_RW_BIT		(ULL(1) << HCR_RW_SHIFT)
#define HCR_AMO_BIT		(U(1) << 5)
#define HCR_IMO_BIT		(U(1) << 4)
#define HCR_FMO_BIT		(U(1) << 3)

/* ISR definitions */
#define ISR_A_SHIFT		U(8)
#define ISR_I_SHIFT		U(7)
#define ISR_F_SHIFT		U(6)

/* CNTHCTL_EL2 definitions */
#define EVNTEN_BIT		(U(1) << 2)
#define EL1PCEN_BIT		(U(1) << 1)
#define EL1PCTEN_BIT		(U(1) << 0)

/* CNTKCTL_EL1 definitions */
#define EL0PTEN_BIT		(U(1) << 9)
#define EL0VTEN_BIT		(U(1) << 8)
#define EL0PCTEN_BIT		(U(1) << 0)
#define EL0VCTEN_BIT		(U(1) << 1)
#define EVNTEN_BIT		(U(1) << 2)
#define EVNTDIR_BIT		(U(1) << 3)
#define EVNTI_SHIFT		U(4)
#define EVNTI_MASK		U(0xf)

/* CPTR_EL3 definitions */
#define TCPAC_BIT		(U(1) << 31)
#define TTA_BIT			(U(1) << 20)
#define TFP_BIT			(U(1) << 10)

/* CPSR/SPSR definitions */
#define DAIF_FIQ_BIT		(U(1) << 0)
#define DAIF_IRQ_BIT		(U(1) << 1)
#define DAIF_ABT_BIT		(U(1) << 2)
#define DAIF_DBG_BIT		(U(1) << 3)
#define SPSR_DAIF_SHIFT		U(6)
#define SPSR_DAIF_MASK		U(0xf)

#define SPSR_AIF_SHIFT		U(6)
#define SPSR_AIF_MASK		U(0x7)

#define SPSR_E_SHIFT		U(9)
#define SPSR_E_MASK		U(0x1)
#define SPSR_E_LITTLE		U(0x0)
#define SPSR_E_BIG		U(0x1)

#define SPSR_T_SHIFT		U(5)
#define SPSR_T_MASK		U(0x1)
#define SPSR_T_ARM		U(0x0)
#define SPSR_T_THUMB		U(0x1)

#define DISABLE_ALL_EXCEPTIONS \
		(DAIF_FIQ_BIT | DAIF_IRQ_BIT | DAIF_ABT_BIT | DAIF_DBG_BIT)

/*
 * RMR_EL3 definitions
 */
#define RMR_EL3_RR_BIT		(U(1) << 1)
#define RMR_EL3_AA64_BIT	(U(1) << 0)

/*
 * HI-VECTOR address for AArch32 state
 */
#define HI_VECTOR_BASE	U(0xFFFF0000)

/*
 * TCR defintions
 */
#define TCR_EL3_RES1		((1UL << 31) | (1UL << 23))
#define TCR_EL1_IPS_SHIFT	U(32)
#define TCR_EL3_PS_SHIFT	U(16)

#define TCR_TxSZ_MIN		U(16)
#define TCR_TxSZ_MAX		U(39)

/* (internal) physical address size bits in EL3/EL1 */
#define TCR_PS_BITS_4GB		U(0x0)
#define TCR_PS_BITS_64GB	U(0x1)
#define TCR_PS_BITS_1TB		U(0x2)
#define TCR_PS_BITS_4TB		U(0x3)
#define TCR_PS_BITS_16TB	U(0x4)
#define TCR_PS_BITS_256TB	U(0x5)

#define ADDR_MASK_48_TO_63	ULL(0xFFFF000000000000)
#define ADDR_MASK_44_TO_47	ULL(0x0000F00000000000)
#define ADDR_MASK_42_TO_43	ULL(0x00000C0000000000)
#define ADDR_MASK_40_TO_41	ULL(0x0000030000000000)
#define ADDR_MASK_36_TO_39	ULL(0x000000F000000000)
#define ADDR_MASK_32_TO_35	ULL(0x0000000F00000000)

#define TCR_RGN_INNER_NC	(U(0x0) << 8)
#define TCR_RGN_INNER_WBA	(U(0x1) << 8)
#define TCR_RGN_INNER_WT	(U(0x2) << 8)
#define TCR_RGN_INNER_WBNA	(U(0x3) << 8)

#define TCR_RGN_OUTER_NC	(U(0x0) << 10)
#define TCR_RGN_OUTER_WBA	(U(0x1) << 10)
#define TCR_RGN_OUTER_WT	(U(0x2) << 10)
#define TCR_RGN_OUTER_WBNA	(U(0x3) << 10)

#define TCR_SH_NON_SHAREABLE	(U(0x0) << 12)
#define TCR_SH_OUTER_SHAREABLE	(U(0x2) << 12)
#define TCR_SH_INNER_SHAREABLE	(U(0x3) << 12)

#define MODE_SP_SHIFT		U(0x0)
#define MODE_SP_MASK		U(0x1)
#define MODE_SP_EL0		U(0x0)
#define MODE_SP_ELX		U(0x1)

#define MODE_RW_SHIFT		U(0x4)
#define MODE_RW_MASK		U(0x1)
#define MODE_RW_64		U(0x0)
#define MODE_RW_32		U(0x1)

#define MODE_EL_SHIFT		U(0x2)
#define MODE_EL_MASK		U(0x3)
#define MODE_EL3		U(0x3)
#define MODE_EL2		U(0x2)
#define MODE_EL1		U(0x1)
#define MODE_EL0		U(0x0)

#define MODE32_SHIFT		U(0)
#define MODE32_MASK		U(0xf)
#define MODE32_usr		U(0x0)
#define MODE32_fiq		U(0x1)
#define MODE32_irq		U(0x2)
#define MODE32_svc		U(0x3)
#define MODE32_mon		U(0x6)
#define MODE32_abt		U(0x7)
#define MODE32_hyp		U(0xa)
#define MODE32_und		U(0xb)
#define MODE32_sys		U(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))

/*
 * CTR_EL0 definitions
 */
#define CTR_CWG_SHIFT		U(24)
#define CTR_CWG_MASK		U(0xf)
#define CTR_ERG_SHIFT		U(20)
#define CTR_ERG_MASK		U(0xf)
#define CTR_DMINLINE_SHIFT	U(16)
#define CTR_DMINLINE_MASK	U(0xf)
#define CTR_L1IP_SHIFT		U(14)
#define CTR_L1IP_MASK		U(0x3)
#define CTR_IMINLINE_SHIFT	U(0)
#define CTR_IMINLINE_MASK	U(0xf)

#define MAX_CACHE_LINE_SIZE	U(0x800) /* 2KB */

/* Physical timer control register bit fields shifts and masks */
#define CNTP_CTL_ENABLE_SHIFT   U(0)
#define CNTP_CTL_IMASK_SHIFT    U(1)
#define CNTP_CTL_ISTATUS_SHIFT  U(2)

#define CNTP_CTL_ENABLE_MASK    U(1)
#define CNTP_CTL_IMASK_MASK     U(1)
#define CNTP_CTL_ISTATUS_MASK   U(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) |= (U(1) << CNTP_CTL_ENABLE_SHIFT))
#define set_cntp_ctl_imask(x)   ((x) |= (U(1) << CNTP_CTL_IMASK_SHIFT))

#define clr_cntp_ctl_enable(x)  ((x) &= ~(U(1) << CNTP_CTL_ENABLE_SHIFT))
#define clr_cntp_ctl_imask(x)   ((x) &= ~(U(1) << CNTP_CTL_IMASK_SHIFT))

/* Exception Syndrome register bits and bobs */
#define ESR_EC_SHIFT			U(26)
#define ESR_EC_MASK			U(0x3f)
#define ESR_EC_LENGTH			U(6)
#define EC_UNKNOWN			U(0x0)
#define EC_WFE_WFI			U(0x1)
#define EC_AARCH32_CP15_MRC_MCR		U(0x3)
#define EC_AARCH32_CP15_MRRC_MCRR	U(0x4)
#define EC_AARCH32_CP14_MRC_MCR		U(0x5)
#define EC_AARCH32_CP14_LDC_STC		U(0x6)
#define EC_FP_SIMD			U(0x7)
#define EC_AARCH32_CP10_MRC		U(0x8)
#define EC_AARCH32_CP14_MRRC_MCRR	U(0xc)
#define EC_ILLEGAL			U(0xe)
#define EC_AARCH32_SVC			U(0x11)
#define EC_AARCH32_HVC			U(0x12)
#define EC_AARCH32_SMC			U(0x13)
#define EC_AARCH64_SVC			U(0x15)
#define EC_AARCH64_HVC			U(0x16)
#define EC_AARCH64_SMC			U(0x17)
#define EC_AARCH64_SYS			U(0x18)
#define EC_IABORT_LOWER_EL		U(0x20)
#define EC_IABORT_CUR_EL		U(0x21)
#define EC_PC_ALIGN			U(0x22)
#define EC_DABORT_LOWER_EL		U(0x24)
#define EC_DABORT_CUR_EL		U(0x25)
#define EC_SP_ALIGN			U(0x26)
#define EC_AARCH32_FP			U(0x28)
#define EC_AARCH64_FP			U(0x2c)
#define EC_SERROR			U(0x2f)

#define EC_BITS(x)			(((x) >> ESR_EC_SHIFT) & ESR_EC_MASK)

/* Reset bit inside the Reset management register for EL3 (RMR_EL3) */
#define RMR_RESET_REQUEST_SHIFT 	U(0x1)
#define RMR_WARM_RESET_CPU		(U(1) << RMR_RESET_REQUEST_SHIFT)

/*******************************************************************************
 * Definitions of register offsets, fields and macros for CPU system
 * instructions.
 ******************************************************************************/

#define TLBI_ADDR_SHIFT		U(12)
#define TLBI_ADDR_MASK		ULL(0x00000FFFFFFFFFFF)
#define TLBI_ADDR(x)		(((x) >> TLBI_ADDR_SHIFT) & TLBI_ADDR_MASK)

/*******************************************************************************
 * Definitions of register offsets and fields in the CNTCTLBase Frame of the
 * system level implementation of the Generic Timer.
 ******************************************************************************/
#define CNTNSAR			U(0x4)
#define CNTNSAR_NS_SHIFT(x)	(x)

#define CNTACR_BASE(x)		(U(0x40) + ((x) << 2))
#define CNTACR_RPCT_SHIFT	U(0x0)
#define CNTACR_RVCT_SHIFT	U(0x1)
#define CNTACR_RFRQ_SHIFT	U(0x2)
#define CNTACR_RVOFF_SHIFT	U(0x3)
#define CNTACR_RWVT_SHIFT	U(0x4)
#define CNTACR_RWPT_SHIFT	U(0x5)

/* PMCR_EL0 definitions */
#define PMCR_EL0_N_SHIFT	U(11)
#define PMCR_EL0_N_MASK		U(0x1f)
#define PMCR_EL0_N_BITS		(PMCR_EL0_N_MASK << PMCR_EL0_N_SHIFT)

#endif /* __ARCH_H__ */