luckfox-pico-sdk/sysdrv/source/mcu/rt-thread/libcpu/arm/arm926/context_gcc.S
luckfox-eng29 8f34c2760d project:build.sh: Added fastboot support; custom modifications to U-Boot and kernel implemented using patches.
project:cfg:BoardConfig_IPC: Added fastboot BoardConfig file and firmware post-scripts, distinguishing between
the BoardConfigs for Luckfox Pico Pro and Luckfox Pico Max. project:app: Added fastboot_client and rk_smart_door
for quick boot applications; updated rkipc app to adapt to the latest media library. media:samples: Added more
usage examples. media:rockit: Fixed bugs; removed support for retrieving data frames from VPSS. media:isp:
Updated rkaiq library and related tools to support connection to RKISP_Tuner. sysdrv:Makefile: Added support for
compiling drv_ko on Luckfox Pico Ultra W using Ubuntu; added support for custom root filesystem.
sysdrv:tools:board: Updated Buildroot optional mirror sources, updated some software versions, and stored device
tree files and configuration files that undergo multiple modifications for U-Boot and kernel separately.
sysdrv:source:mcu: Used RISC-V MCU SDK with RT-Thread system, mainly for initializing camera AE during quick
boot. sysdrv:source:uboot: Added support for fastboot; added high baud rate DDR bin for serial firmware upgrades.
sysdrv:source:kernel: Upgraded to version 5.10.160; increased NPU frequency for RV1106G3; added support for
fastboot.

Signed-off-by: luckfox-eng29 <eng29@luckfox.com>
2024-10-14 09:47:04 +08:00

79 lines
2.2 KiB
ArmAsm

;/*
; * Copyright (c) 2006-2018, RT-Thread Development Team
; *
; * SPDX-License-Identifier: Apache-2.0
; *
; * Change Logs:
; * Date Author Notes
; * 2011-08-14 weety copy from mini2440
; */
#define NOINT 0xC0
;/*
; * rt_base_t rt_hw_interrupt_disable();
; */
.globl rt_hw_interrupt_disable
rt_hw_interrupt_disable:
MRS R0, CPSR
ORR R1, R0, #NOINT
MSR CPSR_c, R1
BX LR
/*
* void rt_hw_interrupt_enable(rt_base_t level);
*/
.globl rt_hw_interrupt_enable
rt_hw_interrupt_enable:
MSR CPSR, R0
BX LR
/*
* void rt_hw_context_switch(rt_uint32 from, rt_uint32 to);
* r0 --> from
* r1 --> to
*/
.globl rt_hw_context_switch
rt_hw_context_switch:
STMFD SP!, {LR} @; push pc (lr should be pushed in place of pc)
STMFD SP!, {R0-R12, LR} @; push lr & register file
MRS R4, CPSR
STMFD SP!, {R4} @; push cpsr
STR SP, [R0] @; store sp in preempted tasks tcb
LDR SP, [R1] @; get new task stack pointer
LDMFD SP!, {R4} @; pop new task spsr
MSR SPSR_cxsf, R4
LDMFD SP!, {R0-R12, LR, PC}^ @; pop new task r0-r12, lr & pc
/*
* void rt_hw_context_switch_to(rt_uint32 to);
* r0 --> to
*/
.globl rt_hw_context_switch_to
rt_hw_context_switch_to:
LDR SP, [R0] @; get new task stack pointer
LDMFD SP!, {R4} @; pop new task cpsr
MSR SPSR_cxsf, R4
LDMFD SP!, {R0-R12, LR, PC}^ @; pop new task r0-r12, lr & pc
/*
* void rt_hw_context_switch_interrupt(rt_uint32 from, rt_uint32 to);
*/
.globl rt_thread_switch_interrupt_flag
.globl rt_interrupt_from_thread
.globl rt_interrupt_to_thread
.globl rt_hw_context_switch_interrupt
rt_hw_context_switch_interrupt:
LDR R2, =rt_thread_switch_interrupt_flag
LDR R3, [R2]
CMP R3, #1
BEQ _reswitch
MOV R3, #1 @; set flag to 1
STR R3, [R2]
LDR R2, =rt_interrupt_from_thread @; set rt_interrupt_from_thread
STR R0, [R2]
_reswitch:
LDR R2, =rt_interrupt_to_thread @; set rt_interrupt_to_thread
STR R1, [R2]
BX LR