include/lib/aarch32/arch.h

/*
 * 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 __ARCH_H__
#define __ARCH_H__

/*******************************************************************************
 * MIDR bit definitions
 ******************************************************************************/
#define MIDR_IMPL_MASK		0xff
#define MIDR_IMPL_SHIFT		24
#define MIDR_VAR_SHIFT		20
#define MIDR_VAR_BITS		4
#define MIDR_REV_SHIFT		0
#define MIDR_REV_BITS		4
#define MIDR_PN_MASK		0xfff
#define MIDR_PN_SHIFT		4

/*******************************************************************************
 * 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_AFFLVL_SHIFT	3
#define MPIDR_AFF0_SHIFT	0
#define MPIDR_AFF1_SHIFT	8
#define MPIDR_AFF2_SHIFT	16
#define MPIDR_AFFINITY_MASK	0x00ffffff
#define MPIDR_AFFLVL0		0
#define MPIDR_AFFLVL1		1
#define MPIDR_AFFLVL2		2

#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)

/*
 * The MPIDR_MAX_AFFLVL count starts from 0. Take care to
 * add one while using this macro to define array sizes.
 */
#define MPIDR_MAX_AFFLVL	2

/* Data Cache set/way op type defines */
#define DC_OP_ISW			0x0
#define DC_OP_CISW			0x1
#define DC_OP_CSW			0x2

/*******************************************************************************
 * 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

/* ID_PFR1 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)
#define ID_PFR1_GIC_SHIFT	28
#define ID_PFR1_GIC_MASK	0xf

/* SCTLR definitions */
#define SCTLR_RES1	((1 << 23) | (1 << 22) | (1 << 11) | (1 << 4) | \
			(1 << 3))
#define SCTLR_M_BIT		(1 << 0)
#define SCTLR_A_BIT		(1 << 1)
#define SCTLR_C_BIT		(1 << 2)
#define SCTLR_CP15BEN_BIT	(1 << 5)
#define SCTLR_ITD_BIT		(1 << 7)
#define SCTLR_I_BIT		(1 << 12)
#define SCTLR_V_BIT		(1 << 13)
#define SCTLR_NTWI_BIT		(1 << 16)
#define SCTLR_NTWE_BIT		(1 << 18)
#define SCTLR_WXN_BIT		(1 << 19)
#define SCTLR_UWXN_BIT		(1 << 20)
#define SCTLR_EE_BIT		(1 << 25)
#define SCTLR_TRE_BIT		(1 << 28)
#define SCTLR_AFE_BIT		(1 << 29)
#define SCTLR_TE_BIT		(1 << 30)

/* HSCTLR definitions */
#define HSCTLR_RES1 	((1 << 29) | (1 << 28) | (1 << 23) | (1 << 22)	\
			| (1 << 18) | (1 << 16) | (1 << 11) | (1 << 4)	\
			| (1 << 3))
#define HSCTLR_M_BIT		(1 << 0)
#define HSCTLR_A_BIT		(1 << 1)
#define HSCTLR_C_BIT		(1 << 2)
#define HSCTLR_CP15BEN_BIT	(1 << 5)
#define HSCTLR_ITD_BIT		(1 << 7)
#define HSCTLR_SED_BIT		(1 << 8)
#define HSCTLR_I_BIT		(1 << 12)
#define HSCTLR_WXN_BIT		(1 << 19)
#define HSCTLR_EE_BIT		(1 << 25)
#define HSCTLR_TE_BIT		(1 << 30)

/* CPACR definitions */
#define CPACR_FPEN(x)	((x) << 20)
#define CPACR_FP_TRAP_PL0	0x1
#define CPACR_FP_TRAP_ALL	0x2
#define CPACR_FP_TRAP_NONE	0x3

/* SCR definitions */
#define SCR_TWE_BIT		(1 << 13)
#define SCR_TWI_BIT		(1 << 12)
#define SCR_SIF_BIT		(1 << 9)
#define SCR_HCE_BIT		(1 << 8)
#define SCR_SCD_BIT		(1 << 7)
#define SCR_NET_BIT		(1 << 6)
#define SCR_AW_BIT		(1 << 5)
#define SCR_FW_BIT		(1 << 4)
#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	0x33ff

#define GET_NS_BIT(scr)		((scr) & SCR_NS_BIT)

/* HCR definitions */
#define HCR_AMO_BIT		(1 << 5)
#define HCR_IMO_BIT		(1 << 4)
#define HCR_FMO_BIT		(1 << 3)

/* CNTHCTL definitions */
#define EVNTEN_BIT		(1 << 2)
#define PL1PCEN_BIT		(1 << 1)
#define PL1PCTEN_BIT		(1 << 0)

/* CNTKCTL definitions */
#define PL0PTEN_BIT		(1 << 9)
#define PL0VTEN_BIT		(1 << 8)
#define PL0PCTEN_BIT		(1 << 0)
#define PL0VCTEN_BIT		(1 << 1)
#define EVNTEN_BIT		(1 << 2)
#define EVNTDIR_BIT		(1 << 3)
#define EVNTI_SHIFT		4
#define EVNTI_MASK		0xf

/* HCPTR definitions */
#define TCPAC_BIT		(1 << 31)
#define TTA_BIT			(1 << 20)
#define TCP11_BIT		(1 << 10)
#define TCP10_BIT		(1 << 10)

/* NASCR definitions */
#define NSASEDIS_BIT		(1 << 15)
#define NSTRCDIS_BIT		(1 << 20)
#define NASCR_CP11_BIT		(1 << 11)
#define NASCR_CP10_BIT		(1 << 10)

/* CPACR definitions */
#define ASEDIS_BIT		(1 << 31)
#define TRCDIS_BIT		(1 << 28)
#define CPACR_CP11_SHIFT	22
#define CPACR_CP10_SHIFT	20
#define CPACR_ENABLE_FP_ACCESS	(0x3 << CPACR_CP11_SHIFT |\
					0x3 << CPACR_CP10_SHIFT)

/* FPEXC definitions */
#define FPEXC_EN_BIT		(1 << 30)

/* SPSR/CPSR definitions */
#define SPSR_FIQ_BIT		(1 << 0)
#define SPSR_IRQ_BIT		(1 << 1)
#define SPSR_ABT_BIT		(1 << 2)
#define SPSR_AIF_SHIFT		6
#define SPSR_AIF_MASK		0x7

#define SPSR_E_SHIFT		9
#define SPSR_E_MASK		0x1
#define SPSR_E_LITTLE		0
#define SPSR_E_BIG		1

#define SPSR_T_SHIFT		5
#define SPSR_T_MASK		0x1
#define SPSR_T_ARM		0
#define SPSR_T_THUMB		1

#define SPSR_MODE_SHIFT		0
#define SPSR_MODE_MASK		0x7


#define DISABLE_ALL_EXCEPTIONS \
		(SPSR_FIQ_BIT | SPSR_IRQ_BIT | SPSR_ABT_BIT)

/*
 * TTBCR definitions
 */
/* The ARM Trusted Firmware uses the long descriptor format */
#define TTBCR_EAE_BIT		(1 << 31)

#define TTBCR_SH1_NON_SHAREABLE		(0x0 << 28)
#define TTBCR_SH1_OUTER_SHAREABLE	(0x2 << 28)
#define TTBCR_SH1_INNER_SHAREABLE	(0x3 << 28)

#define TTBCR_RGN1_OUTER_NC	(0x0 << 26)
#define TTBCR_RGN1_OUTER_WBA	(0x1 << 26)
#define TTBCR_RGN1_OUTER_WT	(0x2 << 26)
#define TTBCR_RGN1_OUTER_WBNA	(0x3 << 26)

#define TTBCR_RGN1_INNER_NC	(0x0 << 24)
#define TTBCR_RGN1_INNER_WBA	(0x1 << 24)
#define TTBCR_RGN1_INNER_WT	(0x2 << 24)
#define TTBCR_RGN1_INNER_WBNA	(0x3 << 24)

#define TTBCR_EPD1_BIT		(1 << 23)
#define TTBCR_A1_BIT		(1 << 22)

#define TTBCR_T1SZ_SHIFT	16
#define TTBCR_T1SZ_MASK		(0x7)
#define TTBCR_TxSZ_MIN		0
#define TTBCR_TxSZ_MAX		7

#define TTBCR_SH0_NON_SHAREABLE		(0x0 << 12)
#define TTBCR_SH0_OUTER_SHAREABLE	(0x2 << 12)
#define TTBCR_SH0_INNER_SHAREABLE	(0x3 << 12)

#define TTBCR_RGN0_OUTER_NC	(0x0 << 10)
#define TTBCR_RGN0_OUTER_WBA	(0x1 << 10)
#define TTBCR_RGN0_OUTER_WT	(0x2 << 10)
#define TTBCR_RGN0_OUTER_WBNA	(0x3 << 10)

#define TTBCR_RGN0_INNER_NC	(0x0 << 8)
#define TTBCR_RGN0_INNER_WBA	(0x1 << 8)
#define TTBCR_RGN0_INNER_WT	(0x2 << 8)
#define TTBCR_RGN0_INNER_WBNA	(0x3 << 8)

#define TTBCR_EPD0_BIT		(1 << 7)
#define TTBCR_T0SZ_SHIFT	0
#define TTBCR_T0SZ_MASK		(0x7)

#define MODE_RW_SHIFT		0x4
#define MODE_RW_MASK		0x1
#define MODE_RW_32		0x1

#define MODE32_SHIFT		0
#define MODE32_MASK		0x1f
#define MODE32_usr		0x10
#define MODE32_fiq		0x11
#define MODE32_irq		0x12
#define MODE32_svc		0x13
#define MODE32_mon		0x16
#define MODE32_abt		0x17
#define MODE32_hyp		0x1a
#define MODE32_und		0x1b
#define MODE32_sys		0x1f

#define GET_M32(mode)		(((mode) >> MODE32_SHIFT) & MODE32_MASK)

#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 definitions
 */
#define CTR_CWG_SHIFT		24
#define CTR_CWG_MASK		0xf
#define CTR_ERG_SHIFT		20
#define CTR_ERG_MASK		0xf
#define CTR_DMINLINE_SHIFT	16
#define CTR_DMINLINE_WIDTH	4
#define CTR_DMINLINE_MASK	((1 << 4) - 1)
#define CTR_L1IP_SHIFT		14
#define CTR_L1IP_MASK		0x3
#define CTR_IMINLINE_SHIFT	0
#define CTR_IMINLINE_MASK	0xf

#define MAX_CACHE_LINE_SIZE	0x800 /* 2KB */

/* PMCR definitions */
#define PMCR_N_SHIFT		11
#define PMCR_N_MASK		0x1f
#define PMCR_N_BITS		(PMCR_N_MASK << PMCR_N_SHIFT)

/*******************************************************************************
 * 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

/* MAIR macros */
#define MAIR0_ATTR_SET(attr, index)	((attr) << ((index) << 3))
#define MAIR1_ATTR_SET(attr, index)	((attr) << (((index) - 3) << 3))

/* System register defines The format is: coproc, opt1, CRn, CRm, opt2 */
#define SCR		p15, 0, c1, c1, 0
#define SCTLR		p15, 0, c1, c0, 0
#define MPIDR		p15, 0, c0, c0, 5
#define MIDR		p15, 0, c0, c0, 0
#define VBAR		p15, 0, c12, c0, 0
#define MVBAR		p15, 0, c12, c0, 1
#define NSACR		p15, 0, c1, c1, 2
#define CPACR		p15, 0, c1, c0, 2
#define DCCIMVAC	p15, 0, c7, c14, 1
#define DCCMVAC		p15, 0, c7, c10, 1
#define DCIMVAC		p15, 0, c7, c6, 1
#define DCCISW		p15, 0, c7, c14, 2
#define DCCSW		p15, 0, c7, c10, 2
#define DCISW		p15, 0, c7, c6, 2
#define CTR		p15, 0, c0, c0, 1
#define CNTFRQ		p15, 0, c14, c0, 0
#define ID_PFR1		p15, 0, c0, c1, 1
#define MAIR0		p15, 0, c10, c2, 0
#define MAIR1		p15, 0, c10, c2, 1
#define TTBCR		p15, 0, c2, c0, 2
#define TTBR0		p15, 0, c2, c0, 0
#define TTBR1		p15, 0, c2, c0, 1
#define TLBIALL		p15, 0, c8, c7, 0
#define TLBIALLIS	p15, 0, c8, c3, 0
#define TLBIMVA		p15, 0, c8, c7, 1
#define TLBIMVAA	p15, 0, c8, c7, 3
#define HSCTLR		p15, 4, c1, c0, 0
#define HCR		p15, 4, c1, c1, 0
#define HCPTR		p15, 4, c1, c1, 2
#define CNTHCTL		p15, 4, c14, c1, 0
#define VPIDR		p15, 4, c0, c0, 0
#define VMPIDR		p15, 4, c0, c0, 5
#define ISR		p15, 0, c12, c1, 0
#define CLIDR		p15, 1, c0, c0, 1
#define CSSELR		p15, 2, c0, c0, 0
#define CCSIDR		p15, 1, c0, c0, 0

/* Debug register defines. The format is: coproc, opt1, CRn, CRm, opt2 */
#define HDCR		p15, 4, c1, c1, 1
#define PMCR		p15, 0, c9, c12, 0
#define CNTHP_CTL	p15, 4, c14, c2, 1

/* GICv3 CPU Interface system register defines. The format is: coproc, opt1, CRn, CRm, opt2 */
#define ICC_IAR1	p15, 0, c12, c12, 0
#define ICC_IAR0	p15, 0, c12, c8, 0
#define ICC_EOIR1	p15, 0, c12, c12, 1
#define ICC_EOIR0	p15, 0, c12, c8, 1
#define ICC_HPPIR1	p15, 0, c12, c12, 2
#define ICC_HPPIR0	p15, 0, c12, c8, 2
#define ICC_BPR1	p15, 0, c12, c12, 3
#define ICC_BPR0	p15, 0, c12, c8, 3
#define ICC_DIR		p15, 0, c12, c11, 1
#define ICC_PMR		p15, 0, c4, c6, 0
#define ICC_RPR		p15, 0, c12, c11, 3
#define ICC_CTLR	p15, 0, c12, c12, 4
#define ICC_MCTLR	p15, 6, c12, c12, 4
#define ICC_SRE		p15, 0, c12, c12, 5
#define ICC_HSRE	p15, 4, c12, c9, 5
#define ICC_MSRE	p15, 6, c12, c12, 5
#define ICC_IGRPEN0	p15, 0, c12, c12, 6
#define ICC_IGRPEN1	p15, 0, c12, c12, 7
#define ICC_MGRPEN1	p15, 6, c12, c12, 7

/* 64 bit system register defines The format is: coproc, opt1, CRm */
#define TTBR0_64	p15, 0, c2
#define TTBR1_64	p15, 1, c2
#define CNTVOFF_64	p15, 4, c14
#define VTTBR_64	p15, 6, c2
#define CNTPCT_64	p15, 0, c14

/* 64 bit GICv3 CPU Interface system register defines. The format is: coproc, opt1, CRm */
#define ICC_SGI1R_EL1_64	p15, 0, c12
#define ICC_ASGI1R_EL1_64	p15, 1, c12
#define ICC_SGI0R_EL1_64	p15, 2, c12

#endif /* __ARCH_H__ */