/*
* Copyright (c) 2013-2015, 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_HELPERS_H__
#define __ARCH_HELPERS_H__
#include <arch.h> /* for additional register definitions */
#include <cdefs.h> /* For __dead2 */
#include <stdint.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 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)); \
}
/*******************************************************************************
* Aarch64 translation tables manipulation helper prototypes
******************************************************************************/
uint64_t create_table_desc(uint64_t *next_table_ptr);
uint64_t create_block_desc(uint64_t desc, uint64_t addr, uint32_t level);
uint64_t create_device_block(uint64_t output_addr, uint32_t level, uint32_t ns);
uint64_t create_romem_block(uint64_t output_addr, uint32_t level, uint32_t ns);
uint64_t create_rwmem_block(uint64_t output_addr, uint32_t level, uint32_t ns);
/*******************************************************************************
* TLB maintenance accessor prototypes
******************************************************************************/
DEFINE_SYSOP_TYPE_FUNC(tlbi, alle1)
DEFINE_SYSOP_TYPE_FUNC(tlbi, alle1is)
DEFINE_SYSOP_TYPE_FUNC(tlbi, alle2)
DEFINE_SYSOP_TYPE_FUNC(tlbi, alle2is)
DEFINE_SYSOP_TYPE_FUNC(tlbi, alle3)
DEFINE_SYSOP_TYPE_FUNC(tlbi, alle3is)
DEFINE_SYSOP_TYPE_FUNC(tlbi, vmalle1)
/*******************************************************************************
* 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(uint64_t, uint64_t);
void clean_dcache_range(uint64_t, uint64_t);
void inv_dcache_range(uint64_t, uint64_t);
void dcsw_op_louis(uint32_t);
void dcsw_op_all(uint32_t);
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 enable_irq() write_daifclr(DAIF_IRQ_BIT)
#define enable_fiq() write_daifclr(DAIF_FIQ_BIT)
#define enable_serror() write_daifclr(DAIF_ABT_BIT)
#define enable_debug_exceptions() write_daifclr(DAIF_DBG_BIT)
#define disable_irq() write_daifset(DAIF_IRQ_BIT)
#define disable_fiq() write_daifset(DAIF_FIQ_BIT)
#define disable_serror() write_daifset(DAIF_ABT_BIT)
#define disable_debug_exceptions() write_daifset(DAIF_DBG_BIT)
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(dsb, ish)
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_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(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_READ_FUNC(isr_el1)
DEFINE_SYSREG_READ_FUNC(ctr_el0)
/* GICv3 System Registers */
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 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__ */
