| /* |
| * Copyright (c) 2016 Intel Corporation. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #define _ASMLANGUAGE |
| |
| #include <toolchain.h> |
| #include <arch/arc/v2/aux_regs.h> |
| #include <swap_macros.h> |
| |
| #ifdef CONFIG_SYS_POWER_DEEP_SLEEP |
| GDATA(_pm_arc_context) |
| |
| GTEXT(_sys_soc_resume_from_deep_sleep) |
| GTEXT(_power_restore_cpu_context) |
| GTEXT(_power_soc_sleep) |
| GTEXT(_power_soc_deep_sleep) |
| |
| #define GPS0_REGISTER 0xb0800100 |
| #define RESTORE_SS_BIT 2 |
| |
| SECTION_FUNC(TEXT, _sys_soc_resume_from_deep_sleep) |
| /* Check is this wakeup after sleep event. */ |
| ld r0,[GPS0_REGISTER] |
| bbit1 r0,RESTORE_SS_BIT,restore |
| j_s [blink] /* Jump to context of BLINK register. */ |
| |
| restore: |
| bclr_s r0,r0,RESTORE_SS_BIT |
| st r0,[GPS0_REGISTER] |
| |
| /* Enable I-Cache */ |
| sr 1, [_ARC_V2_IC_CTRL] |
| |
| j @_sys_soc_restore_cpu_context |
| |
| SECTION_FUNC(TEXT, save_cpu_context) |
| mov_s r1, _kernel |
| ld_s r2, [r1, _kernel_offset_to_current] |
| |
| _save_callee_saved_regs |
| |
| j_s [blink] /* Jump to context of BLINK register. */ |
| |
| SECTION_FUNC(TEXT, _power_soc_sleep) |
| /* |
| * Save the return address. |
| * The restore function will pop this and jump |
| * back to the caller. |
| */ |
| push_s blink |
| |
| /* Do not link to preserve blink */ |
| jl @save_cpu_context |
| j @power_soc_sleep |
| /* Does not return */ |
| |
| SECTION_FUNC(TEXT, _power_soc_deep_sleep) |
| /* |
| * Save the return address. |
| * The restore function will pop this and jump |
| * back to the caller. |
| */ |
| push_s blink |
| |
| /* Do not link to preserve blink */ |
| jl @save_cpu_context |
| j @power_soc_deep_sleep |
| /* Does not return */ |
| |
| SECTION_FUNC(TEXT, _sys_soc_restore_cpu_context) |
| mov_s r1, _kernel |
| ld_s r2, [r1, _kernel_offset_to_current] |
| |
| _load_callee_saved_regs |
| |
| /* Restore return address */ |
| pop_s blink |
| |
| j_s [blink] /* Jump to context of BLINK register. */ |
| #endif |
