1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (c) 2021 Western Digital Corporation or its affiliates.
4 * Copyright (c) 2022 Ventana Micro Systems Inc.
7 #include <linux/linkage.h>
9 #include <asm/asm-offsets.h>
10 #include <asm/assembler.h>
12 #include <asm/xip_fixup.h>
18 ENTRY(__cpu_suspend_enter)
19 /* Save registers (except A0 and T0-T6) */
20 REG_S ra, (SUSPEND_CONTEXT_REGS + PT_RA)(a0)
21 REG_S sp, (SUSPEND_CONTEXT_REGS + PT_SP)(a0)
22 REG_S gp, (SUSPEND_CONTEXT_REGS + PT_GP)(a0)
23 REG_S tp, (SUSPEND_CONTEXT_REGS + PT_TP)(a0)
24 REG_S s0, (SUSPEND_CONTEXT_REGS + PT_S0)(a0)
25 REG_S s1, (SUSPEND_CONTEXT_REGS + PT_S1)(a0)
26 REG_S a1, (SUSPEND_CONTEXT_REGS + PT_A1)(a0)
27 REG_S a2, (SUSPEND_CONTEXT_REGS + PT_A2)(a0)
28 REG_S a3, (SUSPEND_CONTEXT_REGS + PT_A3)(a0)
29 REG_S a4, (SUSPEND_CONTEXT_REGS + PT_A4)(a0)
30 REG_S a5, (SUSPEND_CONTEXT_REGS + PT_A5)(a0)
31 REG_S a6, (SUSPEND_CONTEXT_REGS + PT_A6)(a0)
32 REG_S a7, (SUSPEND_CONTEXT_REGS + PT_A7)(a0)
33 REG_S s2, (SUSPEND_CONTEXT_REGS + PT_S2)(a0)
34 REG_S s3, (SUSPEND_CONTEXT_REGS + PT_S3)(a0)
35 REG_S s4, (SUSPEND_CONTEXT_REGS + PT_S4)(a0)
36 REG_S s5, (SUSPEND_CONTEXT_REGS + PT_S5)(a0)
37 REG_S s6, (SUSPEND_CONTEXT_REGS + PT_S6)(a0)
38 REG_S s7, (SUSPEND_CONTEXT_REGS + PT_S7)(a0)
39 REG_S s8, (SUSPEND_CONTEXT_REGS + PT_S8)(a0)
40 REG_S s9, (SUSPEND_CONTEXT_REGS + PT_S9)(a0)
41 REG_S s10, (SUSPEND_CONTEXT_REGS + PT_S10)(a0)
42 REG_S s11, (SUSPEND_CONTEXT_REGS + PT_S11)(a0)
46 REG_S t0, (SUSPEND_CONTEXT_REGS + PT_EPC)(a0)
48 REG_S t0, (SUSPEND_CONTEXT_REGS + PT_STATUS)(a0)
50 REG_S t0, (SUSPEND_CONTEXT_REGS + PT_BADADDR)(a0)
52 REG_S t0, (SUSPEND_CONTEXT_REGS + PT_CAUSE)(a0)
54 /* Return non-zero value */
57 /* Return to C code */
59 END(__cpu_suspend_enter)
61 ENTRY(__cpu_resume_enter)
62 /* Load the global pointer */
65 la gp, __global_pointer$
76 call relocate_enable_mmu
78 /* Restore A0 and A1 */
83 /* Make A0 point to suspend context */
89 /* Restore registers (except A0 and T0-T6) */
92 /* Return zero value */
95 /* Return to C code */
97 END(__cpu_resume_enter)