/*
* Copyright (c) 2013-2017, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef __ARCH_HELPERS_H__
#define __ARCH_HELPERS_H__
#include <arch.h> /* for additional register definitions */
#include <cdefs.h> /* For __dead2 */
#include <stdint.h>
#include <sys/types.h>
/**********************************************************************
* Macros which create inline functions to read or write CPU system
* registers
*********************************************************************/
#define _DEFINE_SYSREG_READ_FUNC(_name, _reg_name) \
static inline uint64_t read_ ## _name(void) \
{ \
uint64_t v; \
__asm__ volatile ("mrs %0, " #_reg_name : "=r" (v)); \
return v; \
}
#define _DEFINE_SYSREG_WRITE_FUNC(_name, _reg_name) \
static inline void write_ ## _name(uint64_t v) \
{ \
__asm__ volatile ("msr " #_reg_name ", %0" : : "r" (v)); \
}
#define _DEFINE_SYSREG_WRITE_CONST_FUNC(_name, _reg_name) \
static inline void write_ ## _name(const uint64_t v) \
{ \
__asm__ volatile ("msr " #_reg_name ", %0" : : "i" (v)); \
}
/* Define read function for system register */
#define DEFINE_SYSREG_READ_FUNC(_name) \
_DEFINE_SYSREG_READ_FUNC(_name, _name)
/* Define read & write function for system register */
#define DEFINE_SYSREG_RW_FUNCS(_name) \
_DEFINE_SYSREG_READ_FUNC(_name, _name) \
_DEFINE_SYSREG_WRITE_FUNC(_name, _name)
/* Define read & write function for renamed system register */
#define DEFINE_RENAME_SYSREG_RW_FUNCS(_name, _reg_name) \
_DEFINE_SYSREG_READ_FUNC(_name, _reg_name) \
_DEFINE_SYSREG_WRITE_FUNC(_name, _reg_name)
/* Define read function for renamed system register */
#define DEFINE_RENAME_SYSREG_READ_FUNC(_name, _reg_name) \
_DEFINE_SYSREG_READ_FUNC(_name, _reg_name)
/* Define write function for renamed system register */
#define DEFINE_RENAME_SYSREG_WRITE_FUNC(_name, _reg_name) \
_DEFINE_SYSREG_WRITE_FUNC(_name, _reg_name)
/* Define write function for special system registers */
#define DEFINE_SYSREG_WRITE_CONST_FUNC(_name) \
_DEFINE_SYSREG_WRITE_CONST_FUNC(_name, _name)
/**********************************************************************
* Macros to create inline functions for system instructions
*********************************************************************/
/* Define function for simple system instruction */
#define DEFINE_SYSOP_FUNC(_op) \
static inline void _op(void) \
{ \
__asm__ (#_op); \
}
/* Define function for system instruction with type specifier */
#define DEFINE_SYSOP_TYPE_FUNC(_op, _type) \
static inline void _op ## _type(void) \
{ \
__asm__ (#_op " " #_type); \
}
/* Define function for system instruction with register parameter */
#define DEFINE_SYSOP_TYPE_PARAM_FUNC(_op, _type) \
static inline void _op ## _type(uint64_t v) \
{ \
__asm__ (#_op " " #_type ", %0" : : "r" (v)); \
}
/*******************************************************************************
* TLB maintenance accessor prototypes
******************************************************************************/
#if ERRATA_A57_813419
/*
* Define function for TLBI instruction with type specifier that implements
* the workaround for errata 813419 of Cortex-A57.
*/
#define DEFINE_TLBIOP_ERRATA_A57_813419_TYPE_FUNC(_type)\
static inline void tlbi ## _type(void) \
{ \
__asm__("tlbi " #_type "\n" \
"dsb ish\n" \
"tlbi " #_type); \
}
/*
* Define function for TLBI instruction with register parameter that implements
* the workaround for errata 813419 of Cortex-A57.
*/
#define DEFINE_TLBIOP_ERRATA_A57_813419_TYPE_PARAM_FUNC(_type) \
static inline void tlbi ## _type(uint64_t v) \
{ \
__asm__("tlbi " #_type ", %0\n" \
"dsb ish\n" \
"tlbi " #_type ", %0" : : "r" (v)); \
}
#endif /* ERRATA_A57_813419 */
DEFINE_SYSOP_TYPE_FUNC(tlbi, alle1)
DEFINE_SYSOP_TYPE_FUNC(tlbi, alle1is)
DEFINE_SYSOP_TYPE_FUNC(tlbi, alle2)
DEFINE_SYSOP_TYPE_FUNC(tlbi, alle2is)
#if ERRATA_A57_813419
DEFINE_TLBIOP_ERRATA_A57_813419_TYPE_FUNC(alle3)
DEFINE_TLBIOP_ERRATA_A57_813419_TYPE_FUNC(alle3is)
#else
DEFINE_SYSOP_TYPE_FUNC(tlbi, alle3)
DEFINE_SYSOP_TYPE_FUNC(tlbi, alle3is)
#endif
DEFINE_SYSOP_TYPE_FUNC(tlbi, vmalle1)
DEFINE_SYSOP_TYPE_PARAM_FUNC(tlbi, vaae1is)
DEFINE_SYSOP_TYPE_PARAM_FUNC(tlbi, vaale1is)
DEFINE_SYSOP_TYPE_PARAM_FUNC(tlbi, vae2is)
DEFINE_SYSOP_TYPE_PARAM_FUNC(tlbi, vale2is)
#if ERRATA_A57_813419
DEFINE_TLBIOP_ERRATA_A57_813419_TYPE_PARAM_FUNC(vae3is)
DEFINE_TLBIOP_ERRATA_A57_813419_TYPE_PARAM_FUNC(vale3is)
#else
DEFINE_SYSOP_TYPE_PARAM_FUNC(tlbi, vae3is)
DEFINE_SYSOP_TYPE_PARAM_FUNC(tlbi, vale3is)
#endif
/*******************************************************************************
* Cache maintenance accessor prototypes
******************************************************************************/
DEFINE_SYSOP_TYPE_PARAM_FUNC(dc, isw)
DEFINE_SYSOP_TYPE_PARAM_FUNC(dc, cisw)
DEFINE_SYSOP_TYPE_PARAM_FUNC(dc, csw)
DEFINE_SYSOP_TYPE_PARAM_FUNC(dc, cvac)
DEFINE_SYSOP_TYPE_PARAM_FUNC(dc, ivac)
DEFINE_SYSOP_TYPE_PARAM_FUNC(dc, civac)
DEFINE_SYSOP_TYPE_PARAM_FUNC(dc, cvau)
DEFINE_SYSOP_TYPE_PARAM_FUNC(dc, zva)
/*******************************************************************************
* Address translation accessor prototypes
******************************************************************************/
DEFINE_SYSOP_TYPE_PARAM_FUNC(at, s12e1r)
DEFINE_SYSOP_TYPE_PARAM_FUNC(at, s12e1w)
DEFINE_SYSOP_TYPE_PARAM_FUNC(at, s12e0r)
DEFINE_SYSOP_TYPE_PARAM_FUNC(at, s12e0w)
void flush_dcache_range(uintptr_t addr, size_t size);
void clean_dcache_range(uintptr_t addr, size_t size);
void inv_dcache_range(uintptr_t addr, size_t size);
void dcsw_op_louis(u_register_t op_type);
void dcsw_op_all(u_register_t op_type);
void disable_mmu_el3(void);
void disable_mmu_icache_el3(void);
/*******************************************************************************
* Misc. accessor prototypes
******************************************************************************/
DEFINE_SYSREG_WRITE_CONST_FUNC(daifset)
DEFINE_SYSREG_WRITE_CONST_FUNC(daifclr)
DEFINE_SYSREG_READ_FUNC(par_el1)
DEFINE_SYSREG_READ_FUNC(id_pfr1_el1)
DEFINE_SYSREG_READ_FUNC(id_aa64pfr0_el1)
DEFINE_SYSREG_READ_FUNC(CurrentEl)
DEFINE_SYSREG_RW_FUNCS(daif)
DEFINE_SYSREG_RW_FUNCS(spsr_el1)
DEFINE_SYSREG_RW_FUNCS(spsr_el2)
DEFINE_SYSREG_RW_FUNCS(spsr_el3)
DEFINE_SYSREG_RW_FUNCS(elr_el1)
DEFINE_SYSREG_RW_FUNCS(elr_el2)
DEFINE_SYSREG_RW_FUNCS(elr_el3)
DEFINE_SYSOP_FUNC(wfi)
DEFINE_SYSOP_FUNC(wfe)
DEFINE_SYSOP_FUNC(sev)
DEFINE_SYSOP_TYPE_FUNC(dsb, sy)
DEFINE_SYSOP_TYPE_FUNC(dmb, sy)
DEFINE_SYSOP_TYPE_FUNC(dmb, st)
DEFINE_SYSOP_TYPE_FUNC(dmb, ld)
DEFINE_SYSOP_TYPE_FUNC(dsb, ish)
DEFINE_SYSOP_TYPE_FUNC(dsb, ishst)
DEFINE_SYSOP_TYPE_FUNC(dmb, ish)
DEFINE_SYSOP_FUNC(isb)
uint32_t get_afflvl_shift(uint32_t);
uint32_t mpidr_mask_lower_afflvls(uint64_t, uint32_t);
void __dead2 eret(uint64_t x0, uint64_t x1, uint64_t x2, uint64_t x3,
uint64_t x4, uint64_t x5, uint64_t x6, uint64_t x7);
void __dead2 smc(uint64_t x0, uint64_t x1, uint64_t x2, uint64_t x3,
uint64_t x4, uint64_t x5, uint64_t x6, uint64_t x7);
/*******************************************************************************
* System register accessor prototypes
******************************************************************************/
DEFINE_SYSREG_READ_FUNC(midr_el1)
DEFINE_SYSREG_READ_FUNC(mpidr_el1)
DEFINE_SYSREG_READ_FUNC(id_aa64mmfr0_el1)
DEFINE_SYSREG_RW_FUNCS(scr_el3)
DEFINE_SYSREG_RW_FUNCS(hcr_el2)
DEFINE_SYSREG_RW_FUNCS(vbar_el1)
DEFINE_SYSREG_RW_FUNCS(vbar_el2)
DEFINE_SYSREG_RW_FUNCS(vbar_el3)
DEFINE_SYSREG_RW_FUNCS(sctlr_el1)
DEFINE_SYSREG_RW_FUNCS(sctlr_el2)
DEFINE_SYSREG_RW_FUNCS(sctlr_el3)
DEFINE_SYSREG_RW_FUNCS(actlr_el1)
DEFINE_SYSREG_RW_FUNCS(actlr_el2)
DEFINE_SYSREG_RW_FUNCS(actlr_el3)
DEFINE_SYSREG_RW_FUNCS(esr_el1)
DEFINE_SYSREG_RW_FUNCS(esr_el2)
DEFINE_SYSREG_RW_FUNCS(esr_el3)
DEFINE_SYSREG_RW_FUNCS(afsr0_el1)
DEFINE_SYSREG_RW_FUNCS(afsr0_el2)
DEFINE_SYSREG_RW_FUNCS(afsr0_el3)
DEFINE_SYSREG_RW_FUNCS(afsr1_el1)
DEFINE_SYSREG_RW_FUNCS(afsr1_el2)
DEFINE_SYSREG_RW_FUNCS(afsr1_el3)
DEFINE_SYSREG_RW_FUNCS(far_el1)
DEFINE_SYSREG_RW_FUNCS(far_el2)
DEFINE_SYSREG_RW_FUNCS(far_el3)
DEFINE_SYSREG_RW_FUNCS(mair_el1)
DEFINE_SYSREG_RW_FUNCS(mair_el2)
DEFINE_SYSREG_RW_FUNCS(mair_el3)
DEFINE_SYSREG_RW_FUNCS(amair_el1)
DEFINE_SYSREG_RW_FUNCS(amair_el2)
DEFINE_SYSREG_RW_FUNCS(amair_el3)
DEFINE_SYSREG_READ_FUNC(rvbar_el1)
DEFINE_SYSREG_READ_FUNC(rvbar_el2)
DEFINE_SYSREG_READ_FUNC(rvbar_el3)
DEFINE_SYSREG_RW_FUNCS(rmr_el1)
DEFINE_SYSREG_RW_FUNCS(rmr_el2)
DEFINE_SYSREG_RW_FUNCS(rmr_el3)
DEFINE_SYSREG_RW_FUNCS(tcr_el1)
DEFINE_SYSREG_RW_FUNCS(tcr_el2)
DEFINE_SYSREG_RW_FUNCS(tcr_el3)
DEFINE_SYSREG_RW_FUNCS(ttbr0_el1)
DEFINE_SYSREG_RW_FUNCS(ttbr0_el2)
DEFINE_SYSREG_RW_FUNCS(ttbr0_el3)
DEFINE_SYSREG_RW_FUNCS(ttbr1_el1)
DEFINE_SYSREG_RW_FUNCS(vttbr_el2)
DEFINE_SYSREG_RW_FUNCS(cptr_el2)
DEFINE_SYSREG_RW_FUNCS(cptr_el3)
DEFINE_SYSREG_RW_FUNCS(cpacr_el1)
DEFINE_SYSREG_RW_FUNCS(cntfrq_el0)
DEFINE_SYSREG_RW_FUNCS(cntps_ctl_el1)
DEFINE_SYSREG_RW_FUNCS(cntps_tval_el1)
DEFINE_SYSREG_RW_FUNCS(cntps_cval_el1)
DEFINE_SYSREG_READ_FUNC(cntpct_el0)
DEFINE_SYSREG_RW_FUNCS(cnthctl_el2)
DEFINE_SYSREG_RW_FUNCS(tpidr_el3)
DEFINE_SYSREG_RW_FUNCS(cntvoff_el2)
DEFINE_SYSREG_RW_FUNCS(vpidr_el2)
DEFINE_SYSREG_RW_FUNCS(vmpidr_el2)
DEFINE_SYSREG_RW_FUNCS(cntp_ctl_el0)
DEFINE_SYSREG_READ_FUNC(isr_el1)
DEFINE_SYSREG_READ_FUNC(ctr_el0)
DEFINE_SYSREG_RW_FUNCS(mdcr_el2)
DEFINE_SYSREG_RW_FUNCS(hstr_el2)
DEFINE_SYSREG_RW_FUNCS(cnthp_ctl_el2)
DEFINE_SYSREG_READ_FUNC(pmcr_el0)
DEFINE_RENAME_SYSREG_RW_FUNCS(icc_sre_el1, ICC_SRE_EL1)
DEFINE_RENAME_SYSREG_RW_FUNCS(icc_sre_el2, ICC_SRE_EL2)
DEFINE_RENAME_SYSREG_RW_FUNCS(icc_sre_el3, ICC_SRE_EL3)
DEFINE_RENAME_SYSREG_RW_FUNCS(icc_pmr_el1, ICC_PMR_EL1)
DEFINE_RENAME_SYSREG_RW_FUNCS(icc_igrpen1_el3, ICC_IGRPEN1_EL3)
DEFINE_RENAME_SYSREG_RW_FUNCS(icc_igrpen0_el1, ICC_IGRPEN0_EL1)
DEFINE_RENAME_SYSREG_READ_FUNC(icc_hppir0_el1, ICC_HPPIR0_EL1)
DEFINE_RENAME_SYSREG_READ_FUNC(icc_hppir1_el1, ICC_HPPIR1_EL1)
DEFINE_RENAME_SYSREG_READ_FUNC(icc_iar0_el1, ICC_IAR0_EL1)
DEFINE_RENAME_SYSREG_READ_FUNC(icc_iar1_el1, ICC_IAR1_EL1)
DEFINE_RENAME_SYSREG_WRITE_FUNC(icc_eoir0_el1, ICC_EOIR0_EL1)
DEFINE_RENAME_SYSREG_WRITE_FUNC(icc_eoir1_el1, ICC_EOIR1_EL1)
#define IS_IN_EL(x) \
(GET_EL(read_CurrentEl()) == MODE_EL##x)
#define IS_IN_EL1() IS_IN_EL(1)
#define IS_IN_EL3() IS_IN_EL(3)
/* Previously defined accesor functions with incomplete register names */
#define read_current_el() read_CurrentEl()
#define dsb() dsbsy()
#define read_midr() read_midr_el1()
#define read_mpidr() read_mpidr_el1()
#define read_scr() read_scr_el3()
#define write_scr(_v) write_scr_el3(_v)
#define read_hcr() read_hcr_el2()
#define write_hcr(_v) write_hcr_el2(_v)
#define read_cpacr() read_cpacr_el1()
#define write_cpacr(_v) write_cpacr_el1(_v)
#endif /* __ARCH_HELPERS_H__ */
