arch/arm/include/asm/macro.h - platform/external/u-boot - Gitiles

 /* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * include/asm-arm/macro.h
  *
  * Copyright (C) 2009 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
  */

 #ifndef __ASM_ARM_MACRO_H__
 #define __ASM_ARM_MACRO_H__

 #ifdef CONFIG_ARM64
 #include <asm/system.h>
 #endif

 #ifdef __ASSEMBLY__

 /*
  * These macros provide a convenient way to write 8, 16 and 32 bit data
  * to any address.
  * Registers r4 and r5 are used, any data in these registers are
  * overwritten by the macros.
  * The macros are valid for any ARM architecture, they do not implement
  * any memory barriers so caution is recommended when using these when the
  * caches are enabled or on a multi-core system.
  */

 .macro	write32, addr, data
 	ldr	r4, =\addr
 	ldr	r5, =\data
 	str	r5, [r4]
 .endm

 .macro	write16, addr, data
 	ldr	r4, =\addr
 	ldrh	r5, =\data
 	strh	r5, [r4]
 .endm

 .macro	write8, addr, data
 	ldr	r4, =\addr
 	ldrb	r5, =\data
 	strb	r5, [r4]
 .endm

 /*
  * This macro generates a loop that can be used for delays in the code.
  * Register r4 is used, any data in this register is overwritten by the
  * macro.
  * The macro is valid for any ARM architeture. The actual time spent in the
  * loop will vary from CPU to CPU though.
  */

 .macro	wait_timer, time
 	ldr	r4, =\time
 1:
 	nop
 	subs	r4, r4, #1
 	bcs	1b
 .endm

 #ifdef CONFIG_ARM64
 /*
  * Register aliases.
  */
 lr	.req	x30

 /*
  * Branch according to exception level
  */
 .macro	switch_el, xreg, el3_label, el2_label, el1_label
 	mrs	\xreg, CurrentEL
 	cmp	\xreg, #0x8
 	b.gt	\el3_label
 	b.eq	\el2_label
 	b.lt	\el1_label
 .endm

 /*
  * Branch if we are not in the highest exception level
  */
 .macro	branch_if_not_highest_el, xreg, label
 	switch_el \xreg, 3f, 2f, 1f

 2:	mrs	\xreg, ID_AA64PFR0_EL1
 	and	\xreg, \xreg, #(ID_AA64PFR0_EL1_EL3)
 	cbnz	\xreg, \label
 	b	3f

 1:	mrs	\xreg, ID_AA64PFR0_EL1
 	and	\xreg, \xreg, #(ID_AA64PFR0_EL1_EL3 | ID_AA64PFR0_EL1_EL2)
 	cbnz	\xreg, \label

 3:
 .endm

 /*
  * Branch if current processor is a Cortex-A57 core.
  */
 .macro	branch_if_a57_core, xreg, a57_label
 	mrs	\xreg, midr_el1
 	lsr	\xreg, \xreg, #4
 	and	\xreg, \xreg, #0x00000FFF
 	cmp	\xreg, #0xD07		/* Cortex-A57 MPCore processor. */
 	b.eq	\a57_label
 .endm

 /*
  * Branch if current processor is a Cortex-A53 core.
  */
 .macro	branch_if_a53_core, xreg, a53_label
 	mrs	\xreg, midr_el1
 	lsr	\xreg, \xreg, #4
 	and	\xreg, \xreg, #0x00000FFF
 	cmp	\xreg, #0xD03		/* Cortex-A53 MPCore processor. */
 	b.eq	\a53_label
 .endm

 /*
  * Branch if current processor is a slave,
  * choose processor with all zero affinity value as the master.
  */
 .macro	branch_if_slave, xreg, slave_label
 #ifdef CONFIG_ARMV8_MULTIENTRY
 	mrs	\xreg, mpidr_el1
 	and	\xreg, \xreg,  0xffffffffff	/* clear bits [63:40] */
 	and	\xreg, \xreg, ~0x00ff000000	/* also clear bits [31:24] */
 	cbnz	\xreg, \slave_label
 #endif
 .endm

 /*
  * Branch if current processor is a master,
  * choose processor with all zero affinity value as the master.
  */
 .macro	branch_if_master, xreg, master_label
 #ifdef CONFIG_ARMV8_MULTIENTRY
 	mrs	\xreg, mpidr_el1
 	and	\xreg, \xreg,  0xffffffffff	/* clear bits [63:40] */
 	and	\xreg, \xreg, ~0x00ff000000	/* also clear bits [31:24] */
 	cbz	\xreg, \master_label
 #else
 	b	\master_label
 #endif
 .endm

 /*
  * Switch from EL3 to EL2 for ARMv8
  * @ep:     kernel entry point
  * @flag:   The execution state flag for lower exception
  *          level, ES_TO_AARCH64 or ES_TO_AARCH32
  * @tmp:    temporary register
  *
  * For loading 32-bit OS, x1 is machine nr and x2 is ftaddr.
  * For loading 64-bit OS, x0 is physical address to the FDT blob.
  * They will be passed to the guest.
  */
 .macro armv8_switch_to_el2_m, ep, flag, tmp
 	msr	cptr_el3, xzr		/* Disable coprocessor traps to EL3 */
 	mov	\tmp, #CPTR_EL2_RES1
 	msr	cptr_el2, \tmp		/* Disable coprocessor traps to EL2 */

 	/* Initialize Generic Timers */
 	msr	cntvoff_el2, xzr

 	/* Initialize SCTLR_EL2
 	 *
 	 * setting RES1 bits (29,28,23,22,18,16,11,5,4) to 1
 	 * and RES0 bits (31,30,27,26,24,21,20,17,15-13,10-6) +
 	 * EE,WXN,I,SA,C,A,M to 0
 	 */
 	ldr	\tmp, =(SCTLR_EL2_RES1 | SCTLR_EL2_EE_LE |\
 			SCTLR_EL2_WXN_DIS | SCTLR_EL2_ICACHE_DIS |\
 			SCTLR_EL2_SA_DIS | SCTLR_EL2_DCACHE_DIS |\
 			SCTLR_EL2_ALIGN_DIS | SCTLR_EL2_MMU_DIS)
 	msr	sctlr_el2, \tmp

 	mov	\tmp, sp
 	msr	sp_el2, \tmp		/* Migrate SP */
 	mrs	\tmp, vbar_el3
 	msr	vbar_el2, \tmp		/* Migrate VBAR */

 	/* Check switch to AArch64 EL2 or AArch32 Hypervisor mode */
 	cmp	\flag, #ES_TO_AARCH32
 	b.eq	1f

 	/*
 	 * The next lower exception level is AArch64, 64bit EL2 | HCE |
 	 * RES1 (Bits[5:4]) | Non-secure EL0/EL1.
 	 * and the SMD depends on requirements.
 	 */
 #ifdef CONFIG_ARMV8_PSCI
 	ldr	\tmp, =(SCR_EL3_RW_AARCH64 | SCR_EL3_HCE_EN |\
 			SCR_EL3_RES1 | SCR_EL3_NS_EN)
 #else
 	ldr	\tmp, =(SCR_EL3_RW_AARCH64 | SCR_EL3_HCE_EN |\
 			SCR_EL3_SMD_DIS | SCR_EL3_RES1 |\
 			SCR_EL3_NS_EN)
 #endif

 #ifdef CONFIG_ARMV8_EA_EL3_FIRST
 	orr	\tmp, \tmp, #SCR_EL3_EA_EN
 #endif
 	msr	scr_el3, \tmp

 	/* Return to the EL2_SP2 mode from EL3 */
 	ldr	\tmp, =(SPSR_EL_DEBUG_MASK | SPSR_EL_SERR_MASK |\
 			SPSR_EL_IRQ_MASK | SPSR_EL_FIQ_MASK |\
 			SPSR_EL_M_AARCH64 | SPSR_EL_M_EL2H)
 	msr	spsr_el3, \tmp
 	msr	elr_el3, \ep
 	eret

 1:
 	/*
 	 * The next lower exception level is AArch32, 32bit EL2 | HCE |
 	 * SMD | RES1 (Bits[5:4]) | Non-secure EL0/EL1.
 	 */
 	ldr	\tmp, =(SCR_EL3_RW_AARCH32 | SCR_EL3_HCE_EN |\
 			SCR_EL3_SMD_DIS | SCR_EL3_RES1 |\
 			SCR_EL3_NS_EN)
 	msr	scr_el3, \tmp

 	/* Return to AArch32 Hypervisor mode */
 	ldr     \tmp, =(SPSR_EL_END_LE | SPSR_EL_ASYN_MASK |\
 			SPSR_EL_IRQ_MASK | SPSR_EL_FIQ_MASK |\
 			SPSR_EL_T_A32 | SPSR_EL_M_AARCH32 |\
 			SPSR_EL_M_HYP)
 	msr	spsr_el3, \tmp
 	msr     elr_el3, \ep
 	eret
 .endm

 /*
  * Switch from EL2 to EL1 for ARMv8
  * @ep:     kernel entry point
  * @flag:   The execution state flag for lower exception
  *          level, ES_TO_AARCH64 or ES_TO_AARCH32
  * @tmp:    temporary register
  *
  * For loading 32-bit OS, x1 is machine nr and x2 is ftaddr.
  * For loading 64-bit OS, x0 is physical address to the FDT blob.
  * They will be passed to the guest.
  */
 .macro armv8_switch_to_el1_m, ep, flag, tmp, tmp2
 	/* Initialize Generic Timers */
 	mrs	\tmp, cnthctl_el2
 	/* Enable EL1 access to timers */
 	orr	\tmp, \tmp, #(CNTHCTL_EL2_EL1PCEN_EN |\
 		CNTHCTL_EL2_EL1PCTEN_EN)
 	msr	cnthctl_el2, \tmp
 	msr	cntvoff_el2, xzr

 	/* Initilize MPID/MPIDR registers */
 	mrs	\tmp, midr_el1
 	msr	vpidr_el2, \tmp
 	mrs	\tmp, mpidr_el1
 	msr	vmpidr_el2, \tmp

 	/* Disable coprocessor traps */
 	mov	\tmp, #CPTR_EL2_RES1
 	msr	cptr_el2, \tmp		/* Disable coprocessor traps to EL2 */
 	msr	hstr_el2, xzr		/* Disable coprocessor traps to EL2 */
 	mov	\tmp, #CPACR_EL1_FPEN_EN
 	msr	cpacr_el1, \tmp		/* Enable FP/SIMD at EL1 */

 	/* SCTLR_EL1 initialization
 	 *
 	 * setting RES1 bits (29,28,23,22,20,11) to 1
 	 * and RES0 bits (31,30,27,21,17,13,10,6) +
 	 * UCI,EE,EOE,WXN,nTWE,nTWI,UCT,DZE,I,UMA,SED,ITD,
 	 * CP15BEN,SA0,SA,C,A,M to 0
 	 */
 	ldr	\tmp, =(SCTLR_EL1_RES1 | SCTLR_EL1_UCI_DIS |\
 			SCTLR_EL1_EE_LE | SCTLR_EL1_WXN_DIS |\
 			SCTLR_EL1_NTWE_DIS | SCTLR_EL1_NTWI_DIS |\
 			SCTLR_EL1_UCT_DIS | SCTLR_EL1_DZE_DIS |\
 			SCTLR_EL1_ICACHE_DIS | SCTLR_EL1_UMA_DIS |\
 			SCTLR_EL1_SED_EN | SCTLR_EL1_ITD_EN |\
 			SCTLR_EL1_CP15BEN_DIS | SCTLR_EL1_SA0_DIS |\
 			SCTLR_EL1_SA_DIS | SCTLR_EL1_DCACHE_DIS |\
 			SCTLR_EL1_ALIGN_DIS | SCTLR_EL1_MMU_DIS)
 	msr	sctlr_el1, \tmp

 	mov	\tmp, sp
 	msr	sp_el1, \tmp		/* Migrate SP */
 	mrs	\tmp, vbar_el2
 	msr	vbar_el1, \tmp		/* Migrate VBAR */

 	/* Check switch to AArch64 EL1 or AArch32 Supervisor mode */
 	cmp	\flag, #ES_TO_AARCH32
 	b.eq	1f

 	/* Initialize HCR_EL2 */
 	/* Only disable PAuth traps if PAuth is supported */
 	mrs	\tmp, id_aa64isar1_el1
 	ldr	\tmp2, =(ID_AA64ISAR1_EL1_GPI | ID_AA64ISAR1_EL1_GPA | \
 		      ID_AA64ISAR1_EL1_API | ID_AA64ISAR1_EL1_APA)
 	tst	\tmp, \tmp2
 	mov	\tmp2, #(HCR_EL2_RW_AARCH64 | HCR_EL2_HCD_DIS)
 	orr	\tmp, \tmp2, #(HCR_EL2_APK | HCR_EL2_API)
 	csel	\tmp, \tmp2, \tmp, eq
 	msr	hcr_el2, \tmp

 	/* Return to the EL1_SP1 mode from EL2 */
 	ldr	\tmp, =(SPSR_EL_DEBUG_MASK | SPSR_EL_SERR_MASK |\
 			SPSR_EL_IRQ_MASK | SPSR_EL_FIQ_MASK |\
 			SPSR_EL_M_AARCH64 | SPSR_EL_M_EL1H)
 	msr	spsr_el2, \tmp
 	msr     elr_el2, \ep
 	eret

 1:
 	/* Initialize HCR_EL2 */
 	ldr	\tmp, =(HCR_EL2_RW_AARCH32 | HCR_EL2_HCD_DIS)
 	msr	hcr_el2, \tmp

 	/* Return to AArch32 Supervisor mode from EL2 */
 	ldr	\tmp, =(SPSR_EL_END_LE | SPSR_EL_ASYN_MASK |\
 			SPSR_EL_IRQ_MASK | SPSR_EL_FIQ_MASK |\
 			SPSR_EL_T_A32 | SPSR_EL_M_AARCH32 |\
 			SPSR_EL_M_SVC)
 	msr     spsr_el2, \tmp
 	msr     elr_el2, \ep
 	eret
 .endm

 #if defined(CONFIG_GICV3)
 .macro gic_wait_for_interrupt_m xreg1
 0 :	wfi
 	mrs     \xreg1, ICC_IAR1_EL1
 	msr     ICC_EOIR1_EL1, \xreg1
 	cbnz    \xreg1, 0b
 .endm
 #elif defined(CONFIG_GICV2)
 .macro gic_wait_for_interrupt_m xreg1, wreg2
 0 :	wfi
 	ldr     \wreg2, [\xreg1, GICC_AIAR]
 	str     \wreg2, [\xreg1, GICC_AEOIR]
 	and	\wreg2, \wreg2, #0x3ff
 	cbnz    \wreg2, 0b
 .endm
 #endif

 #endif /* CONFIG_ARM64 */

 #endif /* __ASSEMBLY__ */
 #endif /* __ASM_ARM_MACRO_H__ */
	/* SPDX-License-Identifier: GPL-2.0+ */
	/*
	* include/asm-arm/macro.h
	*
	* Copyright (C) 2009 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
	*/

	#ifndef __ASM_ARM_MACRO_H__
	#define __ASM_ARM_MACRO_H__

	#ifdef CONFIG_ARM64
	#include <asm/system.h>
	#endif

	#ifdef __ASSEMBLY__

	/*
	* These macros provide a convenient way to write 8, 16 and 32 bit data
	* to any address.
	* Registers r4 and r5 are used, any data in these registers are
	* overwritten by the macros.
	* The macros are valid for any ARM architecture, they do not implement
	* any memory barriers so caution is recommended when using these when the
	* caches are enabled or on a multi-core system.
	*/

	.macro write32, addr, data
	ldr r4, =\addr
	ldr r5, =\data
	str r5, [r4]
	.endm

	.macro write16, addr, data
	ldr r4, =\addr
	ldrh r5, =\data
	strh r5, [r4]
	.endm

	.macro write8, addr, data
	ldr r4, =\addr
	ldrb r5, =\data
	strb r5, [r4]
	.endm

	/*
	* This macro generates a loop that can be used for delays in the code.
	* Register r4 is used, any data in this register is overwritten by the
	* macro.
	* The macro is valid for any ARM architeture. The actual time spent in the
	* loop will vary from CPU to CPU though.
	*/

	.macro wait_timer, time
	ldr r4, =\time
	1:
	nop
	subs r4, r4, #1
	bcs 1b
	.endm

	#ifdef CONFIG_ARM64
	/*
	* Register aliases.
	*/
	lr .req x30

	/*
	* Branch according to exception level
	*/
	.macro switch_el, xreg, el3_label, el2_label, el1_label
	mrs \xreg, CurrentEL
	cmp \xreg, #0x8
	b.gt \el3_label
	b.eq \el2_label
	b.lt \el1_label
	.endm

	/*
	* Branch if we are not in the highest exception level
	*/
	.macro branch_if_not_highest_el, xreg, label
	switch_el \xreg, 3f, 2f, 1f

	2: mrs \xreg, ID_AA64PFR0_EL1
	and \xreg, \xreg, #(ID_AA64PFR0_EL1_EL3)
	cbnz \xreg, \label
	b 3f

	1: mrs \xreg, ID_AA64PFR0_EL1
	and \xreg, \xreg, #(ID_AA64PFR0_EL1_EL3 \| ID_AA64PFR0_EL1_EL2)
	cbnz \xreg, \label

	3:
	.endm

	/*
	* Branch if current processor is a Cortex-A57 core.
	*/
	.macro branch_if_a57_core, xreg, a57_label
	mrs \xreg, midr_el1
	lsr \xreg, \xreg, #4
	and \xreg, \xreg, #0x00000FFF
	cmp \xreg, #0xD07 /* Cortex-A57 MPCore processor. */
	b.eq \a57_label
	.endm

	/*
	* Branch if current processor is a Cortex-A53 core.
	*/
	.macro branch_if_a53_core, xreg, a53_label
	mrs \xreg, midr_el1
	lsr \xreg, \xreg, #4
	and \xreg, \xreg, #0x00000FFF
	cmp \xreg, #0xD03 /* Cortex-A53 MPCore processor. */
	b.eq \a53_label
	.endm

	/*
	* Branch if current processor is a slave,
	* choose processor with all zero affinity value as the master.
	*/
	.macro branch_if_slave, xreg, slave_label
	#ifdef CONFIG_ARMV8_MULTIENTRY
	mrs \xreg, mpidr_el1
	and \xreg, \xreg, 0xffffffffff /* clear bits [63:40] */
	and \xreg, \xreg, ~0x00ff000000 /* also clear bits [31:24] */
	cbnz \xreg, \slave_label
	#endif
	.endm

	/*
	* Branch if current processor is a master,
	* choose processor with all zero affinity value as the master.
	*/
	.macro branch_if_master, xreg, master_label
	#ifdef CONFIG_ARMV8_MULTIENTRY
	mrs \xreg, mpidr_el1
	and \xreg, \xreg, 0xffffffffff /* clear bits [63:40] */
	and \xreg, \xreg, ~0x00ff000000 /* also clear bits [31:24] */
	cbz \xreg, \master_label
	#else
	b \master_label
	#endif
	.endm

	/*
	* Switch from EL3 to EL2 for ARMv8
	* @ep: kernel entry point
	* @flag: The execution state flag for lower exception
	* level, ES_TO_AARCH64 or ES_TO_AARCH32
	* @tmp: temporary register
	*
	* For loading 32-bit OS, x1 is machine nr and x2 is ftaddr.
	* For loading 64-bit OS, x0 is physical address to the FDT blob.
	* They will be passed to the guest.
	*/
	.macro armv8_switch_to_el2_m, ep, flag, tmp
	msr cptr_el3, xzr /* Disable coprocessor traps to EL3 */
	mov \tmp, #CPTR_EL2_RES1
	msr cptr_el2, \tmp /* Disable coprocessor traps to EL2 */

	/* Initialize Generic Timers */
	msr cntvoff_el2, xzr

	/* Initialize SCTLR_EL2
	*
	* setting RES1 bits (29,28,23,22,18,16,11,5,4) to 1
	* and RES0 bits (31,30,27,26,24,21,20,17,15-13,10-6) +
	* EE,WXN,I,SA,C,A,M to 0
	*/
	ldr \tmp, =(SCTLR_EL2_RES1 \| SCTLR_EL2_EE_LE \|\
	SCTLR_EL2_WXN_DIS \| SCTLR_EL2_ICACHE_DIS \|\
	SCTLR_EL2_SA_DIS \| SCTLR_EL2_DCACHE_DIS \|\
	SCTLR_EL2_ALIGN_DIS \| SCTLR_EL2_MMU_DIS)
	msr sctlr_el2, \tmp

	mov \tmp, sp
	msr sp_el2, \tmp /* Migrate SP */
	mrs \tmp, vbar_el3
	msr vbar_el2, \tmp /* Migrate VBAR */

	/* Check switch to AArch64 EL2 or AArch32 Hypervisor mode */
	cmp \flag, #ES_TO_AARCH32
	b.eq 1f

	/*
	* The next lower exception level is AArch64, 64bit EL2 \| HCE \|
	* RES1 (Bits[5:4]) \| Non-secure EL0/EL1.
	* and the SMD depends on requirements.
	*/
	#ifdef CONFIG_ARMV8_PSCI
	ldr \tmp, =(SCR_EL3_RW_AARCH64 \| SCR_EL3_HCE_EN \|\
	SCR_EL3_RES1 \| SCR_EL3_NS_EN)
	#else
	ldr \tmp, =(SCR_EL3_RW_AARCH64 \| SCR_EL3_HCE_EN \|\
	SCR_EL3_SMD_DIS \| SCR_EL3_RES1 \|\
	SCR_EL3_NS_EN)
	#endif

	#ifdef CONFIG_ARMV8_EA_EL3_FIRST
	orr \tmp, \tmp, #SCR_EL3_EA_EN
	#endif
	msr scr_el3, \tmp

	/* Return to the EL2_SP2 mode from EL3 */
	ldr \tmp, =(SPSR_EL_DEBUG_MASK \| SPSR_EL_SERR_MASK \|\
	SPSR_EL_IRQ_MASK \| SPSR_EL_FIQ_MASK \|\
	SPSR_EL_M_AARCH64 \| SPSR_EL_M_EL2H)
	msr spsr_el3, \tmp
	msr elr_el3, \ep
	eret

	1:
	/*
	* The next lower exception level is AArch32, 32bit EL2 \| HCE \|
	* SMD \| RES1 (Bits[5:4]) \| Non-secure EL0/EL1.
	*/
	ldr \tmp, =(SCR_EL3_RW_AARCH32 \| SCR_EL3_HCE_EN \|\
	SCR_EL3_SMD_DIS \| SCR_EL3_RES1 \|\
	SCR_EL3_NS_EN)
	msr scr_el3, \tmp

	/* Return to AArch32 Hypervisor mode */
	ldr \tmp, =(SPSR_EL_END_LE \| SPSR_EL_ASYN_MASK \|\
	SPSR_EL_IRQ_MASK \| SPSR_EL_FIQ_MASK \|\
	SPSR_EL_T_A32 \| SPSR_EL_M_AARCH32 \|\
	SPSR_EL_M_HYP)
	msr spsr_el3, \tmp
	msr elr_el3, \ep
	eret
	.endm

	/*
	* Switch from EL2 to EL1 for ARMv8
	* @ep: kernel entry point
	* @flag: The execution state flag for lower exception
	* level, ES_TO_AARCH64 or ES_TO_AARCH32
	* @tmp: temporary register
	*
	* For loading 32-bit OS, x1 is machine nr and x2 is ftaddr.
	* For loading 64-bit OS, x0 is physical address to the FDT blob.
	* They will be passed to the guest.
	*/
	.macro armv8_switch_to_el1_m, ep, flag, tmp, tmp2
	/* Initialize Generic Timers */
	mrs \tmp, cnthctl_el2
	/* Enable EL1 access to timers */
	orr \tmp, \tmp, #(CNTHCTL_EL2_EL1PCEN_EN \|\
	CNTHCTL_EL2_EL1PCTEN_EN)
	msr cnthctl_el2, \tmp
	msr cntvoff_el2, xzr

	/* Initilize MPID/MPIDR registers */
	mrs \tmp, midr_el1
	msr vpidr_el2, \tmp
	mrs \tmp, mpidr_el1
	msr vmpidr_el2, \tmp

	/* Disable coprocessor traps */
	mov \tmp, #CPTR_EL2_RES1
	msr cptr_el2, \tmp /* Disable coprocessor traps to EL2 */
	msr hstr_el2, xzr /* Disable coprocessor traps to EL2 */
	mov \tmp, #CPACR_EL1_FPEN_EN
	msr cpacr_el1, \tmp /* Enable FP/SIMD at EL1 */

	/* SCTLR_EL1 initialization
	*
	* setting RES1 bits (29,28,23,22,20,11) to 1
	* and RES0 bits (31,30,27,21,17,13,10,6) +
	* UCI,EE,EOE,WXN,nTWE,nTWI,UCT,DZE,I,UMA,SED,ITD,
	* CP15BEN,SA0,SA,C,A,M to 0
	*/
	ldr \tmp, =(SCTLR_EL1_RES1 \| SCTLR_EL1_UCI_DIS \|\
	SCTLR_EL1_EE_LE \| SCTLR_EL1_WXN_DIS \|\
	SCTLR_EL1_NTWE_DIS \| SCTLR_EL1_NTWI_DIS \|\
	SCTLR_EL1_UCT_DIS \| SCTLR_EL1_DZE_DIS \|\
	SCTLR_EL1_ICACHE_DIS \| SCTLR_EL1_UMA_DIS \|\
	SCTLR_EL1_SED_EN \| SCTLR_EL1_ITD_EN \|\
	SCTLR_EL1_CP15BEN_DIS \| SCTLR_EL1_SA0_DIS \|\
	SCTLR_EL1_SA_DIS \| SCTLR_EL1_DCACHE_DIS \|\
	SCTLR_EL1_ALIGN_DIS \| SCTLR_EL1_MMU_DIS)
	msr sctlr_el1, \tmp

	mov \tmp, sp
	msr sp_el1, \tmp /* Migrate SP */
	mrs \tmp, vbar_el2
	msr vbar_el1, \tmp /* Migrate VBAR */

	/* Check switch to AArch64 EL1 or AArch32 Supervisor mode */
	cmp \flag, #ES_TO_AARCH32
	b.eq 1f

	/* Initialize HCR_EL2 */
	/* Only disable PAuth traps if PAuth is supported */
	mrs \tmp, id_aa64isar1_el1
	ldr \tmp2, =(ID_AA64ISAR1_EL1_GPI \| ID_AA64ISAR1_EL1_GPA \| \
	ID_AA64ISAR1_EL1_API \| ID_AA64ISAR1_EL1_APA)
	tst \tmp, \tmp2
	mov \tmp2, #(HCR_EL2_RW_AARCH64 \| HCR_EL2_HCD_DIS)
	orr \tmp, \tmp2, #(HCR_EL2_APK \| HCR_EL2_API)
	csel \tmp, \tmp2, \tmp, eq
	msr hcr_el2, \tmp

	/* Return to the EL1_SP1 mode from EL2 */
	ldr \tmp, =(SPSR_EL_DEBUG_MASK \| SPSR_EL_SERR_MASK \|\
	SPSR_EL_IRQ_MASK \| SPSR_EL_FIQ_MASK \|\
	SPSR_EL_M_AARCH64 \| SPSR_EL_M_EL1H)
	msr spsr_el2, \tmp
	msr elr_el2, \ep
	eret

	1:
	/* Initialize HCR_EL2 */
	ldr \tmp, =(HCR_EL2_RW_AARCH32 \| HCR_EL2_HCD_DIS)
	msr hcr_el2, \tmp

	/* Return to AArch32 Supervisor mode from EL2 */
	ldr \tmp, =(SPSR_EL_END_LE \| SPSR_EL_ASYN_MASK \|\
	SPSR_EL_IRQ_MASK \| SPSR_EL_FIQ_MASK \|\
	SPSR_EL_T_A32 \| SPSR_EL_M_AARCH32 \|\
	SPSR_EL_M_SVC)
	msr spsr_el2, \tmp
	msr elr_el2, \ep
	eret
	.endm

	#if defined(CONFIG_GICV3)
	.macro gic_wait_for_interrupt_m xreg1
	0 : wfi
	mrs \xreg1, ICC_IAR1_EL1
	msr ICC_EOIR1_EL1, \xreg1
	cbnz \xreg1, 0b
	.endm
	#elif defined(CONFIG_GICV2)
	.macro gic_wait_for_interrupt_m xreg1, wreg2
	0 : wfi
	ldr \wreg2, [\xreg1, GICC_AIAR]
	str \wreg2, [\xreg1, GICC_AEOIR]
	and \wreg2, \wreg2, #0x3ff
	cbnz \wreg2, 0b
	.endm
	#endif

	#endif /* CONFIG_ARM64 */

	#endif /* __ASSEMBLY__ */
	#endif /* __ASM_ARM_MACRO_H__ */