| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright 2014 Google Inc. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. 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. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. |
| * |
| * lib_helpers.h: All library function prototypes and macros are defined in this |
| * file. |
| */ |
| |
| #ifndef __ARCH_LIB_HELPERS_H__ |
| #define __ARCH_LIB_HELPERS_H__ |
| |
| #ifdef __ASSEMBLY__ |
| |
| /* Macro to switch to label based on current el */ |
| .macro switch_el xreg label1 label2 label3 |
| mrs \xreg, CurrentEL |
| /* Currently at EL1 */ |
| cmp \xreg, 0x4 |
| b.eq \label1 |
| /* Currently at EL2 */ |
| cmp \xreg, 0x8 |
| b.eq \label2 |
| /* Currently at EL3 */ |
| cmp \xreg, 0xc |
| b.eq \label3 |
| .endm |
| |
| /* Macro to read sysreg at current EL |
| xreg - reg in which read value needs to be stored |
| sysreg - system reg that is to be read |
| */ |
| .macro read_current xreg sysreg |
| switch_el \xreg, 101f, 102f, 103f |
| 101: |
| mrs \xreg, \sysreg\()_el1 |
| b 104f |
| 102: |
| mrs \xreg, \sysreg\()_el2 |
| b 104f |
| 103: |
| mrs \xreg, \sysreg\()_el3 |
| b 104f |
| 104: |
| .endm |
| |
| /* Macro to write sysreg at current EL |
| xreg - reg from which value needs to be written |
| sysreg - system reg that is to be written |
| temp - temp reg that can be used to read current EL |
| */ |
| .macro write_current sysreg xreg temp |
| switch_el \temp, 101f, 102f, 103f |
| 101: |
| msr \sysreg\()_el1, \xreg |
| b 104f |
| 102: |
| msr \sysreg\()_el2, \xreg |
| b 104f |
| 103: |
| msr \sysreg\()_el3, \xreg |
| b 104f |
| 104: |
| .endm |
| |
| #else |
| |
| #define EL0 0 |
| #define EL1 1 |
| #define EL2 2 |
| #define EL3 3 |
| |
| #define CURRENT_EL_MASK 0x3 |
| #define CURRENT_EL_SHIFT 2 |
| |
| #define DAIF_DBG_BIT (1<<3) |
| #define DAIF_ABT_BIT (1<<2) |
| #define DAIF_IRQ_BIT (1<<1) |
| #define DAIF_FIQ_BIT (1<<0) |
| |
| #define SWITCH_CASE_READ(func,var,type) do { \ |
| type var = -1; \ |
| uint8_t current_el = get_current_el(); \ |
| switch(current_el) { \ |
| case EL1: \ |
| var = func##_el1(); \ |
| break; \ |
| case EL2: \ |
| var = func##_el2(); \ |
| break; \ |
| case EL3: \ |
| var = func##_el3(); \ |
| break; \ |
| } \ |
| return var; \ |
| } while(0) |
| |
| #define SWITCH_CASE_WRITE(func,var) do { \ |
| uint8_t current_el = get_current_el(); \ |
| switch(current_el) { \ |
| case EL1: \ |
| func##_el1(var); \ |
| break; \ |
| case EL2: \ |
| func##_el2(var); \ |
| break; \ |
| case EL3: \ |
| func##_el3(var); \ |
| break; \ |
| } \ |
| } while(0) |
| |
| #define SWITCH_CASE_TLBI(func) do { \ |
| uint8_t current_el = get_current_el(); \ |
| switch(current_el) { \ |
| case EL1: \ |
| func##_el1(); \ |
| break; \ |
| case EL2: \ |
| func##_el2(); \ |
| break; \ |
| case EL3: \ |
| func##_el3(); \ |
| break; \ |
| } \ |
| } while(0) |
| |
| /* PSTATE and special purpose register access functions */ |
| uint32_t raw_read_current_el(void); |
| uint32_t get_current_el(void); |
| uint32_t raw_read_daif(void); |
| void raw_write_daif(uint32_t daif); |
| void enable_debug_exceptions(void); |
| void enable_serror_exceptions(void); |
| void enable_irq(void); |
| void enable_fiq(void); |
| void disable_debug_exceptions(void); |
| void disable_serror_exceptions(void); |
| void disable_irq(void); |
| void disable_fiq(void); |
| uint64_t raw_read_dlr_el0(void); |
| void raw_write_dlr_el0(uint64_t dlr_el0); |
| uint64_t raw_read_dspsr_el0(void); |
| void raw_write_dspsr_el0(uint64_t dspsr_el0); |
| uint64_t raw_read_elr_el1(void); |
| void raw_write_elr_el1(uint64_t elr_el1); |
| uint64_t raw_read_elr_el2(void); |
| void raw_write_elr_el2(uint64_t elr_el2); |
| uint64_t raw_read_elr_el3(void); |
| void raw_write_elr_el3(uint64_t elr_el3); |
| uint64_t raw_read_elr_current(void); |
| void raw_write_elr_current(uint64_t elr); |
| uint32_t raw_read_fpcr(void); |
| void raw_write_fpcr(uint32_t fpcr); |
| uint32_t raw_read_fpsr(void); |
| void raw_write_fpsr(uint32_t fpsr); |
| uint32_t raw_read_nzcv(void); |
| void raw_write_nzcv(uint32_t nzcv); |
| uint64_t raw_read_sp_el0(void); |
| void raw_write_sp_el0(uint64_t sp_el0); |
| uint64_t raw_read_sp_el1(void); |
| void raw_write_sp_el1(uint64_t sp_el1); |
| uint64_t raw_read_sp_el2(void); |
| void raw_write_sp_el2(uint64_t sp_el2); |
| uint32_t raw_read_spsel(void); |
| void raw_write_spsel(uint32_t spsel); |
| uint64_t raw_read_sp_el3(void); |
| void raw_write_sp_el3(uint64_t sp_el3); |
| uint32_t raw_read_spsr_abt(void); |
| void raw_write_spsr_abt(uint32_t spsr_abt); |
| uint32_t raw_read_spsr_el1(void); |
| void raw_write_spsr_el1(uint32_t spsr_el1); |
| uint32_t raw_read_spsr_el2(void); |
| void raw_write_spsr_el2(uint32_t spsr_el2); |
| uint32_t raw_read_spsr_el3(void); |
| void raw_write_spsr_el3(uint32_t spsr_el3); |
| uint32_t raw_read_spsr_current(void); |
| void raw_write_spsr_current(uint32_t spsr); |
| uint32_t raw_read_spsr_fiq(void); |
| void raw_write_spsr_fiq(uint32_t spsr_fiq); |
| uint32_t raw_read_spsr_irq(void); |
| void raw_write_spsr_irq(uint32_t spsr_irq); |
| uint32_t raw_read_spsr_und(void); |
| void raw_write_spsr_und(uint32_t spsr_und); |
| |
| /* System control register access */ |
| uint32_t raw_read_actlr_el1(void); |
| void raw_write_actlr_el1(uint32_t actlr_el1); |
| uint32_t raw_read_actlr_el2(void); |
| void raw_write_actlr_el2(uint32_t actlr_el2); |
| uint32_t raw_read_actlr_el3(void); |
| void raw_write_actlr_el3(uint32_t actlr_el3); |
| uint32_t raw_read_actlr_current(void); |
| void raw_write_actlr_current(uint32_t actlr); |
| uint32_t raw_read_afsr0_el1(void); |
| void raw_write_afsr0_el1(uint32_t afsr0_el1); |
| uint32_t raw_read_afsr0_el2(void); |
| void raw_write_afsr0_el2(uint32_t afsr0_el2); |
| uint32_t raw_read_afsr0_el3(void); |
| void raw_write_afsr0_el3(uint32_t afsr0_el3); |
| uint32_t raw_read_afsr0_current(void); |
| void raw_write_afsr0_current(uint32_t afsr0); |
| uint32_t raw_read_afsr1_el1(void); |
| void raw_write_afsr1_el1(uint32_t afsr1_el1); |
| uint32_t raw_read_afsr1_el2(void); |
| void raw_write_afsr1_el2(uint32_t afsr1_el2); |
| uint32_t raw_read_afsr1_el3(void); |
| void raw_write_afsr1_el3(uint32_t afsr1_el3); |
| uint32_t raw_read_afsr1_current(void); |
| void raw_write_afsr1_current(uint32_t afsr1); |
| uint32_t raw_read_aidr_el1(void); |
| uint64_t raw_read_amair_el1(void); |
| void raw_write_amair_el1(uint64_t amair_el1); |
| uint64_t raw_read_amair_el2(void); |
| void raw_write_amair_el2(uint64_t amair_el2); |
| uint64_t raw_read_amair_el3(void); |
| void raw_write_amair_el3(uint64_t amair_el3); |
| uint64_t raw_read_amair_current(void); |
| void raw_write_amair_current(uint64_t amair); |
| uint32_t raw_read_ccsidr_el1(void); |
| uint32_t raw_read_clidr_el1(void); |
| uint32_t raw_read_cpacr_el1(void); |
| void raw_write_cpacr_el1(uint32_t cpacr_el1); |
| uint32_t raw_read_cptr_el2(void); |
| void raw_write_cptr_el2(uint32_t cptr_el2); |
| uint32_t raw_read_cptr_el3(void); |
| void raw_write_cptr_el3(uint32_t cptr_el3); |
| uint32_t raw_read_cptr_current(void); |
| void raw_write_cptr_current(uint32_t cptr); |
| uint32_t raw_read_csselr_el1(void); |
| void raw_write_csselr_el1(uint32_t csselr_el1); |
| uint32_t raw_read_ctr_el0(void); |
| uint32_t raw_read_esr_el1(void); |
| void raw_write_esr_el1(uint32_t esr_el1); |
| uint32_t raw_read_esr_el2(void); |
| void raw_write_esr_el2(uint32_t esr_el2); |
| uint32_t raw_read_esr_el3(void); |
| void raw_write_esr_el3(uint32_t esr_el3); |
| uint32_t raw_read_esr_current(void); |
| void raw_write_esr_current(uint32_t esr); |
| uint64_t raw_read_far_el1(void); |
| void raw_write_far_el1(uint64_t far_el1); |
| uint64_t raw_read_far_el2(void); |
| void raw_write_far_el2(uint64_t far_el2); |
| uint64_t raw_read_far_el3(void); |
| void raw_write_far_el3(uint64_t far_el3); |
| uint64_t raw_read_far_current(void); |
| void raw_write_far_current(uint64_t far); |
| uint64_t raw_read_hcr_el2(void); |
| void raw_write_hcr_el2(uint64_t hcr_el2); |
| uint64_t raw_read_aa64pfr0_el1(void); |
| uint64_t raw_read_mair_el1(void); |
| void raw_write_mair_el1(uint64_t mair_el1); |
| uint64_t raw_read_mair_el2(void); |
| void raw_write_mair_el2(uint64_t mair_el2); |
| uint64_t raw_read_mair_el3(void); |
| void raw_write_mair_el3(uint64_t mair_el3); |
| uint64_t raw_read_mair_current(void); |
| void raw_write_mair_current(uint64_t mair); |
| uint64_t raw_read_mpidr_el1(void); |
| uint32_t raw_read_rmr_el1(void); |
| void raw_write_rmr_el1(uint32_t rmr_el1); |
| uint32_t raw_read_rmr_el2(void); |
| void raw_write_rmr_el2(uint32_t rmr_el2); |
| uint32_t raw_read_rmr_el3(void); |
| void raw_write_rmr_el3(uint32_t rmr_el3); |
| uint32_t raw_read_rmr_current(void); |
| void raw_write_rmr_current(uint32_t rmr); |
| uint64_t raw_read_rvbar_el1(void); |
| void raw_write_rvbar_el1(uint64_t rvbar_el1); |
| uint64_t raw_read_rvbar_el2(void); |
| void raw_write_rvbar_el2(uint64_t rvbar_el2); |
| uint64_t raw_read_rvbar_el3(void); |
| void raw_write_rvbar_el3(uint64_t rvbar_el3); |
| uint64_t raw_read_rvbar_current(void); |
| void raw_write_rvbar_current(uint64_t rvbar); |
| uint32_t raw_read_scr_el3(void); |
| void raw_write_scr_el3(uint32_t scr_el3); |
| uint32_t raw_read_sctlr_el1(void); |
| void raw_write_sctlr_el1(uint32_t sctlr_el1); |
| uint32_t raw_read_sctlr_el2(void); |
| void raw_write_sctlr_el2(uint32_t sctlr_el2); |
| uint32_t raw_read_sctlr_el3(void); |
| void raw_write_sctlr_el3(uint32_t sctlr_el3); |
| uint32_t raw_read_sctlr_current(void); |
| void raw_write_sctlr_current(uint32_t sctlr); |
| uint64_t raw_read_tcr_el1(void); |
| void raw_write_tcr_el1(uint64_t tcr_el1); |
| uint32_t raw_read_tcr_el2(void); |
| void raw_write_tcr_el2(uint32_t tcr_el2); |
| uint32_t raw_read_tcr_el3(void); |
| void raw_write_tcr_el3(uint32_t tcr_el3); |
| uint64_t raw_read_tcr_current(void); |
| void raw_write_tcr_current(uint64_t tcr); |
| uint64_t raw_read_ttbr0_el1(void); |
| void raw_write_ttbr0_el1(uint64_t ttbr0_el1); |
| uint64_t raw_read_ttbr0_el2(void); |
| void raw_write_ttbr0_el2(uint64_t ttbr0_el2); |
| uint64_t raw_read_ttbr0_el3(void); |
| void raw_write_ttbr0_el3(uint64_t ttbr0_el3); |
| uint64_t raw_read_ttbr0_current(void); |
| void raw_write_ttbr0_current(uint64_t ttbr0); |
| uint64_t raw_read_ttbr1_el1(void); |
| void raw_write_ttbr1_el1(uint64_t ttbr1_el1); |
| uint64_t raw_read_vbar_el1(void); |
| void raw_write_vbar_el1(uint64_t vbar_el1); |
| uint64_t raw_read_vbar_el2(void); |
| void raw_write_vbar_el2(uint64_t vbar_el2); |
| uint64_t raw_read_vbar_el3(void); |
| void raw_write_vbar_el3(uint64_t vbar_el3); |
| uint64_t raw_read_vbar_current(void); |
| void raw_write_vbar_current(uint64_t vbar); |
| |
| /* Cache maintenance system instructions */ |
| void dccisw(uint64_t cisw); |
| void dccivac(uint64_t civac); |
| void dccsw(uint64_t csw); |
| void dccvac(uint64_t cvac); |
| void dccvau(uint64_t cvau); |
| void dcisw(uint64_t isw); |
| void dcivac(uint64_t ivac); |
| void dczva(uint64_t zva); |
| void iciallu(void); |
| void icialluis(void); |
| void icivau(uint64_t ivau); |
| |
| /* TLB maintenance instructions */ |
| void tlbiall_el1(void); |
| void tlbiall_el2(void); |
| void tlbiall_el3(void); |
| void tlbiall_current(void); |
| void tlbiallis_el1(void); |
| void tlbiallis_el2(void); |
| void tlbiallis_el3(void); |
| void tlbiallis_current(void); |
| void tlbivaa_el1(uint64_t va); |
| |
| /* Memory barrier */ |
| /* data memory barrier */ |
| #define dmb_opt(opt) asm volatile ("dmb " #opt : : : "memory") |
| /* data sync barrier */ |
| #define dsb_opt(opt) asm volatile ("dsb " #opt : : : "memory") |
| /* instruction sync barrier */ |
| #define isb_opt(opt) asm volatile ("isb " #opt : : : "memory") |
| |
| #define dmb() dmb_opt(sy) |
| #define dsb() dsb_opt(sy) |
| #define isb() isb_opt() |
| |
| /* Clock */ |
| void set_cntfrq(uint32_t freq); |
| |
| #endif // __ASSEMBLY__ |
| |
| #endif //__ARCH_LIB_HELPERS_H__ |