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Diffstat (limited to 'lib/aarch64/sysreg_helpers.S')
| -rw-r--r-- | lib/aarch64/sysreg_helpers.S | 782 |
1 files changed, 782 insertions, 0 deletions
diff --git a/lib/aarch64/sysreg_helpers.S b/lib/aarch64/sysreg_helpers.S new file mode 100644 index 0000000..925e93e --- /dev/null +++ b/lib/aarch64/sysreg_helpers.S @@ -0,0 +1,782 @@ +/* + * Copyright (c) 2013-2014, 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. + */ + +#include <arch.h> +#include <asm_macros.S> + + .globl read_vbar_el1 + .globl read_vbar_el2 + .globl read_vbar_el3 + .globl write_vbar_el1 + .globl write_vbar_el2 + .globl write_vbar_el3 + + .globl read_sctlr_el1 + .globl read_sctlr_el2 + .globl read_sctlr_el3 + .globl write_sctlr_el1 + .globl write_sctlr_el2 + .globl write_sctlr_el3 + + .globl read_actlr_el1 + .globl read_actlr_el2 + .globl read_actlr_el3 + .globl write_actlr_el1 + .globl write_actlr_el2 + .globl write_actlr_el3 + + .globl read_esr_el1 + .globl read_esr_el2 + .globl read_esr_el3 + .globl write_esr_el1 + .globl write_esr_el2 + .globl write_esr_el3 + + .globl read_afsr0_el1 + .globl read_afsr0_el2 + .globl read_afsr0_el3 + .globl write_afsr0_el1 + .globl write_afsr0_el2 + .globl write_afsr0_el3 + + .globl read_afsr1_el1 + .globl read_afsr1_el2 + .globl read_afsr1_el3 + .globl write_afsr1_el1 + .globl write_afsr1_el2 + .globl write_afsr1_el3 + + .globl read_far_el1 + .globl read_far_el2 + .globl read_far_el3 + .globl write_far_el1 + .globl write_far_el2 + .globl write_far_el3 + + .globl read_mair_el1 + .globl read_mair_el2 + .globl read_mair_el3 + .globl write_mair_el1 + .globl write_mair_el2 + .globl write_mair_el3 + + .globl read_amair_el1 + .globl read_amair_el2 + .globl read_amair_el3 + .globl write_amair_el1 + .globl write_amair_el2 + .globl write_amair_el3 + + .globl read_rvbar_el1 + .globl read_rvbar_el2 + .globl read_rvbar_el3 + + .globl read_rmr_el1 + .globl read_rmr_el2 + .globl read_rmr_el3 + .globl write_rmr_el1 + .globl write_rmr_el2 + .globl write_rmr_el3 + + .globl read_tcr_el1 + .globl read_tcr_el2 + .globl read_tcr_el3 + .globl write_tcr_el1 + .globl write_tcr_el2 + .globl write_tcr_el3 + + .globl read_cptr_el2 + .globl read_cptr_el3 + .globl write_cptr_el2 + .globl write_cptr_el3 + + .globl read_ttbr0_el1 + .globl read_ttbr0_el2 + .globl read_ttbr0_el3 + .globl write_ttbr0_el1 + .globl write_ttbr0_el2 + .globl write_ttbr0_el3 + + .globl read_ttbr1_el1 + .globl write_ttbr1_el1 + + .globl read_cpacr + .globl write_cpacr + + .globl read_cntfrq + .globl write_cntfrq + + .globl read_cpuectlr + .globl write_cpuectlr + + .globl read_cnthctl_el2 + .globl write_cnthctl_el2 + + .globl read_cntfrq_el0 + .globl write_cntfrq_el0 + + .globl read_cntps_ctl_el1 + .globl write_cntps_ctl_el1 + + .globl read_cntps_cval_el1 + .globl write_cntps_cval_el1 + + .globl read_cntps_tval_el1 + .globl write_cntps_tval_el1 + + .globl read_scr + .globl write_scr + + .globl read_hcr + .globl write_hcr + + .globl read_midr + .globl read_mpidr + + .globl read_cntpct_el0 + .globl read_current_el + .globl read_id_pfr1_el1 + .globl read_id_aa64pfr0_el1 + + .globl write_tpidr_el3 + .globl read_tpidr_el3 + +#if SUPPORT_VFP + .globl enable_vfp +#endif + + +func read_current_el + mrs x0, CurrentEl + ret + + +func read_id_pfr1_el1 + mrs x0, id_pfr1_el1 + ret + + +func read_id_aa64pfr0_el1 + mrs x0, id_aa64pfr0_el1 + ret + + + /* ----------------------------------------------------- + * VBAR accessors + * ----------------------------------------------------- + */ +func read_vbar_el1 + mrs x0, vbar_el1 + ret + + +func read_vbar_el2 + mrs x0, vbar_el2 + ret + + +func read_vbar_el3 + mrs x0, vbar_el3 + ret + + +func write_vbar_el1 + msr vbar_el1, x0 + ret + + +func write_vbar_el2 + msr vbar_el2, x0 + ret + + +func write_vbar_el3 + msr vbar_el3, x0 + ret + + + /* ----------------------------------------------------- + * AFSR0 accessors + * ----------------------------------------------------- + */ +func read_afsr0_el1 + mrs x0, afsr0_el1 + ret + + +func read_afsr0_el2 + mrs x0, afsr0_el2 + ret + + +func read_afsr0_el3 + mrs x0, afsr0_el3 + ret + + +func write_afsr0_el1 + msr afsr0_el1, x0 + ret + + +func write_afsr0_el2 + msr afsr0_el2, x0 + ret + + +func write_afsr0_el3 + msr afsr0_el3, x0 + ret + + + /* ----------------------------------------------------- + * FAR accessors + * ----------------------------------------------------- + */ +func read_far_el1 + mrs x0, far_el1 + ret + + +func read_far_el2 + mrs x0, far_el2 + ret + + +func read_far_el3 + mrs x0, far_el3 + ret + + +func write_far_el1 + msr far_el1, x0 + ret + + +func write_far_el2 + msr far_el2, x0 + ret + + +func write_far_el3 + msr far_el3, x0 + ret + + + /* ----------------------------------------------------- + * MAIR accessors + * ----------------------------------------------------- + */ +func read_mair_el1 + mrs x0, mair_el1 + ret + + +func read_mair_el2 + mrs x0, mair_el2 + ret + + +func read_mair_el3 + mrs x0, mair_el3 + ret + + +func write_mair_el1 + msr mair_el1, x0 + ret + + +func write_mair_el2 + msr mair_el2, x0 + ret + + +func write_mair_el3 + msr mair_el3, x0 + ret + + + /* ----------------------------------------------------- + * AMAIR accessors + * ----------------------------------------------------- + */ +func read_amair_el1 + mrs x0, amair_el1 + ret + + +func read_amair_el2 + mrs x0, amair_el2 + ret + + +func read_amair_el3 + mrs x0, amair_el3 + ret + + +func write_amair_el1 + msr amair_el1, x0 + ret + + +func write_amair_el2 + msr amair_el2, x0 + ret + + +func write_amair_el3 + msr amair_el3, x0 + ret + + + /* ----------------------------------------------------- + * RVBAR accessors + * ----------------------------------------------------- + */ +func read_rvbar_el1 + mrs x0, rvbar_el1 + ret + + +func read_rvbar_el2 + mrs x0, rvbar_el2 + ret + + +func read_rvbar_el3 + mrs x0, rvbar_el3 + ret + + + /* ----------------------------------------------------- + * RMR accessors + * ----------------------------------------------------- + */ +func read_rmr_el1 + mrs x0, rmr_el1 + ret + + +func read_rmr_el2 + mrs x0, rmr_el2 + ret + + +func read_rmr_el3 + mrs x0, rmr_el3 + ret + + +func write_rmr_el1 + msr rmr_el1, x0 + ret + + +func write_rmr_el2 + msr rmr_el2, x0 + ret + + +func write_rmr_el3 + msr rmr_el3, x0 + ret + + + /* ----------------------------------------------------- + * AFSR1 accessors + * ----------------------------------------------------- + */ +func read_afsr1_el1 + mrs x0, afsr1_el1 + ret + + +func read_afsr1_el2 + mrs x0, afsr1_el2 + ret + + +func read_afsr1_el3 + mrs x0, afsr1_el3 + ret + + +func write_afsr1_el1 + msr afsr1_el1, x0 + ret + + +func write_afsr1_el2 + msr afsr1_el2, x0 + ret + + +func write_afsr1_el3 + msr afsr1_el3, x0 + ret + + + /* ----------------------------------------------------- + * SCTLR accessors + * ----------------------------------------------------- + */ +func read_sctlr_el1 + mrs x0, sctlr_el1 + ret + + +func read_sctlr_el2 + mrs x0, sctlr_el2 + ret + + +func read_sctlr_el3 + mrs x0, sctlr_el3 + ret + + +func write_sctlr_el1 + msr sctlr_el1, x0 + ret + + +func write_sctlr_el2 + msr sctlr_el2, x0 + ret + + +func write_sctlr_el3 + msr sctlr_el3, x0 + ret + + + /* ----------------------------------------------------- + * ACTLR accessors + * ----------------------------------------------------- + */ +func read_actlr_el1 + mrs x0, actlr_el1 + ret + + +func read_actlr_el2 + mrs x0, actlr_el2 + ret + + +func read_actlr_el3 + mrs x0, actlr_el3 + ret + + +func write_actlr_el1 + msr actlr_el1, x0 + ret + + +func write_actlr_el2 + msr actlr_el2, x0 + ret + + +func write_actlr_el3 + msr actlr_el3, x0 + ret + + + /* ----------------------------------------------------- + * ESR accessors + * ----------------------------------------------------- + */ +func read_esr_el1 + mrs x0, esr_el1 + ret + + +func read_esr_el2 + mrs x0, esr_el2 + ret + + +func read_esr_el3 + mrs x0, esr_el3 + ret + + +func write_esr_el1 + msr esr_el1, x0 + ret + + +func write_esr_el2 + msr esr_el2, x0 + ret + + +func write_esr_el3 + msr esr_el3, x0 + ret + + + /* ----------------------------------------------------- + * TCR accessors + * ----------------------------------------------------- + */ +func read_tcr_el1 + mrs x0, tcr_el1 + ret + + +func read_tcr_el2 + mrs x0, tcr_el2 + ret + + +func read_tcr_el3 + mrs x0, tcr_el3 + ret + + +func write_tcr_el1 + msr tcr_el1, x0 + ret + + +func write_tcr_el2 + msr tcr_el2, x0 + ret + + +func write_tcr_el3 + msr tcr_el3, x0 + ret + + + /* ----------------------------------------------------- + * CPTR accessors + * ----------------------------------------------------- + */ +func read_cptr_el2 + mrs x0, cptr_el2 + ret + + +func read_cptr_el3 + mrs x0, cptr_el3 + ret + + +func write_cptr_el2 + msr cptr_el2, x0 + ret + + +func write_cptr_el3 + msr cptr_el3, x0 + ret + + + /* ----------------------------------------------------- + * TTBR0 accessors + * ----------------------------------------------------- + */ +func read_ttbr0_el1 + mrs x0, ttbr0_el1 + ret + + +func read_ttbr0_el2 + mrs x0, ttbr0_el2 + ret + + +func read_ttbr0_el3 + mrs x0, ttbr0_el3 + ret + + +func write_ttbr0_el1 + msr ttbr0_el1, x0 + ret + + +func write_ttbr0_el2 + msr ttbr0_el2, x0 + ret + + +func write_ttbr0_el3 + msr ttbr0_el3, x0 + ret + + + /* ----------------------------------------------------- + * TTBR1 accessors + * ----------------------------------------------------- + */ +func read_ttbr1_el1 + mrs x0, ttbr1_el1 + ret + + +func write_ttbr1_el1 + msr ttbr1_el1, x0 + ret + + +func read_hcr + mrs x0, hcr_el2 + ret + + +func write_hcr + msr hcr_el2, x0 + ret + + +func read_cpacr + mrs x0, cpacr_el1 + ret + + +func write_cpacr + msr cpacr_el1, x0 + ret + + +func read_cntfrq_el0 + mrs x0, cntfrq_el0 + ret + + +func write_cntfrq_el0 + msr cntfrq_el0, x0 + ret + +func read_cntps_ctl_el1 + mrs x0, cntps_ctl_el1 + ret + +func write_cntps_ctl_el1 + msr cntps_ctl_el1, x0 + ret + +func read_cntps_cval_el1 + mrs x0, cntps_cval_el1 + ret + +func write_cntps_cval_el1 + msr cntps_cval_el1, x0 + ret + +func read_cntps_tval_el1 + mrs x0, cntps_tval_el1 + ret + +func write_cntps_tval_el1 + msr cntps_tval_el1, x0 + ret + +func read_cntpct_el0 + mrs x0, cntpct_el0 + ret + +func read_cpuectlr + mrs x0, CPUECTLR_EL1 + ret + + +func write_cpuectlr + msr CPUECTLR_EL1, x0 + ret + + +func read_cnthctl_el2 + mrs x0, cnthctl_el2 + ret + + +func write_cnthctl_el2 + msr cnthctl_el2, x0 + ret + + +func read_cntfrq + mrs x0, cntfrq_el0 + ret + + +func write_cntfrq + msr cntfrq_el0, x0 + ret + + +func write_scr + msr scr_el3, x0 + ret + + +func read_scr + mrs x0, scr_el3 + ret + + +func read_midr + mrs x0, midr_el1 + ret + + +func read_mpidr + mrs x0, mpidr_el1 + ret + +func write_tpidr_el3 + msr tpidr_el3, x0 + ret + +func read_tpidr_el3 + mrs x0, tpidr_el3 + ret + +#if SUPPORT_VFP +func enable_vfp + mrs x0, cpacr_el1 + orr x0, x0, #CPACR_VFP_BITS + msr cpacr_el1, x0 + mrs x0, cptr_el3 + mov x1, #AARCH64_CPTR_TFP + bic x0, x0, x1 + msr cptr_el3, x0 + isb + ret + +#endif |