76329c6939
ENTRY()/END()/WEAK() macros are deprecated and we should make use of the new SYM_*() macros [1] for better annotation of symbols. Replace the deprecated ones with the new ones and fix wrong usage of END()/ENDPROC() to correctly describe the symbols. [1] https://docs.kernel.org/core-api/asm-annotations.html Signed-off-by: Clément Léger <cleger@rivosinc.com> Reviewed-by: Andrew Jones <ajones@ventanamicro.com> Link: https://lore.kernel.org/r/20231024132655.730417-3-cleger@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
96 lines
2.5 KiB
ArmAsm
96 lines
2.5 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2021 Western Digital Corporation or its affiliates.
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* Copyright (c) 2022 Ventana Micro Systems Inc.
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*/
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#include <linux/linkage.h>
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#include <linux/cfi_types.h>
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#include <asm/asm.h>
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#include <asm/asm-offsets.h>
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#include <asm/assembler.h>
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#include <asm/csr.h>
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#include <asm/xip_fixup.h>
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.text
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.altmacro
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.option norelax
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SYM_FUNC_START(__cpu_suspend_enter)
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/* Save registers (except A0 and T0-T6) */
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REG_S ra, (SUSPEND_CONTEXT_REGS + PT_RA)(a0)
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REG_S sp, (SUSPEND_CONTEXT_REGS + PT_SP)(a0)
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REG_S gp, (SUSPEND_CONTEXT_REGS + PT_GP)(a0)
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REG_S tp, (SUSPEND_CONTEXT_REGS + PT_TP)(a0)
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REG_S s0, (SUSPEND_CONTEXT_REGS + PT_S0)(a0)
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REG_S s1, (SUSPEND_CONTEXT_REGS + PT_S1)(a0)
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REG_S a1, (SUSPEND_CONTEXT_REGS + PT_A1)(a0)
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REG_S a2, (SUSPEND_CONTEXT_REGS + PT_A2)(a0)
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REG_S a3, (SUSPEND_CONTEXT_REGS + PT_A3)(a0)
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REG_S a4, (SUSPEND_CONTEXT_REGS + PT_A4)(a0)
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REG_S a5, (SUSPEND_CONTEXT_REGS + PT_A5)(a0)
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REG_S a6, (SUSPEND_CONTEXT_REGS + PT_A6)(a0)
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REG_S a7, (SUSPEND_CONTEXT_REGS + PT_A7)(a0)
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REG_S s2, (SUSPEND_CONTEXT_REGS + PT_S2)(a0)
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REG_S s3, (SUSPEND_CONTEXT_REGS + PT_S3)(a0)
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REG_S s4, (SUSPEND_CONTEXT_REGS + PT_S4)(a0)
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REG_S s5, (SUSPEND_CONTEXT_REGS + PT_S5)(a0)
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REG_S s6, (SUSPEND_CONTEXT_REGS + PT_S6)(a0)
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REG_S s7, (SUSPEND_CONTEXT_REGS + PT_S7)(a0)
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REG_S s8, (SUSPEND_CONTEXT_REGS + PT_S8)(a0)
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REG_S s9, (SUSPEND_CONTEXT_REGS + PT_S9)(a0)
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REG_S s10, (SUSPEND_CONTEXT_REGS + PT_S10)(a0)
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REG_S s11, (SUSPEND_CONTEXT_REGS + PT_S11)(a0)
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/* Save CSRs */
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csrr t0, CSR_EPC
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REG_S t0, (SUSPEND_CONTEXT_REGS + PT_EPC)(a0)
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csrr t0, CSR_STATUS
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REG_S t0, (SUSPEND_CONTEXT_REGS + PT_STATUS)(a0)
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csrr t0, CSR_TVAL
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REG_S t0, (SUSPEND_CONTEXT_REGS + PT_BADADDR)(a0)
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csrr t0, CSR_CAUSE
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REG_S t0, (SUSPEND_CONTEXT_REGS + PT_CAUSE)(a0)
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/* Return non-zero value */
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li a0, 1
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/* Return to C code */
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ret
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SYM_FUNC_END(__cpu_suspend_enter)
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SYM_TYPED_FUNC_START(__cpu_resume_enter)
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/* Load the global pointer */
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load_global_pointer
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#ifdef CONFIG_MMU
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/* Save A0 and A1 */
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add t0, a0, zero
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add t1, a1, zero
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/* Enable MMU */
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la a0, swapper_pg_dir
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XIP_FIXUP_OFFSET a0
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call relocate_enable_mmu
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/* Restore A0 and A1 */
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add a0, t0, zero
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add a1, t1, zero
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#endif
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/* Make A0 point to suspend context */
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add a0, a1, zero
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/* Restore CSRs */
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suspend_restore_csrs
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/* Restore registers (except A0 and T0-T6) */
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suspend_restore_regs
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/* Return zero value */
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add a0, zero, zero
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/* Return to C code */
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ret
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SYM_FUNC_END(__cpu_resume_enter)
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