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/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2023 StarFive Technology Co., Ltd. * * Author: Jee Heng Sia <jeeheng.sia@starfivetech.com> */ #ifndef __ASSEMBLY__ #error "Only include this from assembly code" #endif #ifndef __ASM_ASSEMBLER_H #define __ASM_ASSEMBLER_H #include <asm/asm.h> #include <asm/asm-offsets.h> #include <asm/csr.h> /* * suspend_restore_csrs - restore CSRs */ .macro suspend_restore_csrs REG_L t0, (SUSPEND_CONTEXT_REGS + PT_EPC)(a0) csrw CSR_EPC, t0 REG_L t0, (SUSPEND_CONTEXT_REGS + PT_STATUS)(a0) csrw CSR_STATUS, t0 REG_L t0, (SUSPEND_CONTEXT_REGS + PT_BADADDR)(a0) csrw CSR_TVAL, t0 REG_L t0, (SUSPEND_CONTEXT_REGS + PT_CAUSE)(a0) csrw CSR_CAUSE, t0 .endm /* * suspend_restore_regs - Restore registers (except A0 and T0-T6) */ .macro suspend_restore_regs REG_L ra, (SUSPEND_CONTEXT_REGS + PT_RA)(a0) REG_L sp, (SUSPEND_CONTEXT_REGS + PT_SP)(a0) REG_L gp, (SUSPEND_CONTEXT_REGS + PT_GP)(a0) REG_L tp, (SUSPEND_CONTEXT_REGS + PT_TP)(a0) REG_L s0, (SUSPEND_CONTEXT_REGS + PT_S0)(a0) REG_L s1, (SUSPEND_CONTEXT_REGS + PT_S1)(a0) REG_L a1, (SUSPEND_CONTEXT_REGS + PT_A1)(a0) REG_L a2, (SUSPEND_CONTEXT_REGS + PT_A2)(a0) REG_L a3, (SUSPEND_CONTEXT_REGS + PT_A3)(a0) REG_L a4, (SUSPEND_CONTEXT_REGS + PT_A4)(a0) REG_L a5, (SUSPEND_CONTEXT_REGS + PT_A5)(a0) REG_L a6, (SUSPEND_CONTEXT_REGS + PT_A6)(a0) REG_L a7, (SUSPEND_CONTEXT_REGS + PT_A7)(a0) REG_L s2, (SUSPEND_CONTEXT_REGS + PT_S2)(a0) REG_L s3, (SUSPEND_CONTEXT_REGS + PT_S3)(a0) REG_L s4, (SUSPEND_CONTEXT_REGS + PT_S4)(a0) REG_L s5, (SUSPEND_CONTEXT_REGS + PT_S5)(a0) REG_L s6, (SUSPEND_CONTEXT_REGS + PT_S6)(a0) REG_L s7, (SUSPEND_CONTEXT_REGS + PT_S7)(a0) REG_L s8, (SUSPEND_CONTEXT_REGS + PT_S8)(a0) REG_L s9, (SUSPEND_CONTEXT_REGS + PT_S9)(a0) REG_L s10, (SUSPEND_CONTEXT_REGS + PT_S10)(a0) REG_L s11, (SUSPEND_CONTEXT_REGS + PT_S11)(a0) .endm /* * copy_page - copy 1 page (4KB) of data from source to destination * @a0 - destination * @a1 - source */ .macro copy_page a0, a1 lui a2, 0x1 add a2, a2, a0 1 : REG_L t0, 0(a1) REG_L t1, SZREG(a1) REG_S t0, 0(a0) REG_S t1, SZREG(a0) addi a0, a0, 2 * SZREG addi a1, a1, 2 * SZREG bne a2, a0, 1b .endm #endif /* __ASM_ASSEMBLER_H */