RF_W13无卡设备
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yeyangwen
180
BLV_RF_W13_V04_20260114/Startup/startup_CH572.S
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180
BLV_RF_W13_V04_20260114/Startup/startup_CH572.S
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/********************************** (C) COPYRIGHT *******************************
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* File Name : startup_CH57x.s
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* Author : WCH
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* Version : V1.0.0
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* Date : 2024/12/20
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* Description :
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*********************************************************************************
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* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
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* Attention: This software (modified or not) and binary are used for
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* microcontroller manufactured by Nanjing Qinheng Microelectronics.
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*******************************************************************************/
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.section .init,"ax",@progbits
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.global _start
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.global _vector_base
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.align 1
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_start:
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j handle_reset
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.section .vector,"ax",@progbits
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.align 1
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_vector_base:
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.option norvc;
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.word 0
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.word 0
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.word NMI_Handler /* NMI Handler */
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.word HardFault_Handler /* Hard Fault Handler */
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.word 0xF3F9BDA9
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.word Ecall_M_Mode_Handler /* 5 */
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.word 0
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.word 0
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.word Ecall_U_Mode_Handler /* 8 */
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.word Break_Point_Handler /* 9 */
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.word 0
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.word 0
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.word SysTick_Handler /* SysTick Handler */
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.word 0
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.word SWI_Handler /* SWI Handler */
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.word 0
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/* External Interrupts */
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.word 0 /* 16 */
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.word GPIOA_IRQHandler /* GPIOA */
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.word 0
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.word SPI_IRQHandler /* SPI */
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.word BB_IRQHandler /* BLEB */
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.word LLE_IRQHandler /* BLEL */
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.word USB_IRQHandler /* USB */
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.word 0
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.word TMR_IRQHandler /* TMR */
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.word 0
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.word 0
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.word UART_IRQHandler /* UART */
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.word RTC_IRQHandler /* RTC */
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.word CMP_IRQHandler /* CMP */
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.word I2C_IRQHandler /* I2C */
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.word PWMX_IRQHandler /* PWMX */
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.word 0
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.word KEYSCAN_IRQHandler /* KEYSCAN */
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.word ENCODER_IRQHandler /* ENCODER */
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.word WDOG_BAT_IRQHandler /* WDOG_BAT */
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.option rvc;
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.section .vector_handler, "ax", @progbits
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.weak NMI_Handler
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.weak HardFault_Handler
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.weak Ecall_M_Mode_Handler
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.weak Ecall_U_Mode_Handler
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.weak Break_Point_Handler
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.weak SysTick_Handler
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.weak SWI_Handler
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.weak GPIOA_IRQHandler
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.weak SPI_IRQHandler
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.weak BB_IRQHandler
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.weak LLE_IRQHandler
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.weak USB_IRQHandler
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.weak TMR_IRQHandler
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.weak UART_IRQHandler
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.weak RTC_IRQHandler
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.weak CMP_IRQHandler
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.weak I2C_IRQHandler
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.weak PWMX_IRQHandler
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.weak KEYSCAN_IRQHandler
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.weak ENCODER_IRQHandler
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.weak WDOG_BAT_IRQHandler
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NMI_Handler:
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HardFault_Handler:
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Ecall_M_Mode_Handler:
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Ecall_U_Mode_Handler:
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Break_Point_Handler:
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SysTick_Handler:
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SWI_Handler:
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GPIOA_IRQHandler:
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SPI_IRQHandler:
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BB_IRQHandler:
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LLE_IRQHandler:
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USB_IRQHandler:
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TMR_IRQHandler:
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UART_IRQHandler:
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RTC_IRQHandler:
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CMP_IRQHandler:
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I2C_IRQHandler:
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PWMX_IRQHandler:
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KEYSCAN_IRQHandler:
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ENDOCE_IRQHandler:
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WDOG_BAT_IRQHandler:
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1:
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j 1b
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.section .handle_reset,"ax",@progbits
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.weak handle_reset
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.align 1
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handle_reset:
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.option push
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.option norelax
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la gp, __global_pointer$
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1:
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la sp, _eusrstack
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.option pop
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/* Load highcode code section from flash to RAM */
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2:
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la a0, _highcode_lma
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la a1, _highcode_vma_start
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la a2, _highcode_vma_end
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bgeu a1, a2, 2f
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1:
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lw t0, (a0)
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sw t0, (a1)
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addi a0, a0, 4
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addi a1, a1, 4
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bltu a1, a2, 1b
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/* Load data section from flash to RAM */
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2:
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la a0, _data_lma
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la a1, _data_vma
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la a2, _edata
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bgeu a1, a2, 2f
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1:
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lw t0, (a0)
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sw t0, (a1)
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addi a0, a0, 4
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addi a1, a1, 4
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bltu a1, a2, 1b
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2:
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/* clear bss section */
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la a0, _sbss
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la a1, _ebss
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bgeu a0, a1, 2f
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1:
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sw zero, (a0)
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addi a0, a0, 4
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bltu a0, a1, 1b
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2:
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/* <20>û<EFBFBD>ģʽ<C4A3>ж<EFBFBD>ʹ<EFBFBD><CAB9> */
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/*Ԥȡʹ<C8A1><CAB9>*/
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li t0, 0x25
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csrw 0xbc0, t0
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/* <20><><EFBFBD><EFBFBD>Ƕ<EFBFBD><C7B6><EFBFBD>жϡ<D0B6>Ӳ<EFBFBD><D3B2>ѹջ<D1B9><D5BB><EFBFBD><EFBFBD> */
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li t0, 0x3
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csrw 0x804, t0
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li t0, 0x1
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csrw 0xbc1, t0
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li t0, 0x88
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csrw mstatus, t0
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la t0, _vector_base
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/* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ģʽΪ<CABD><CEAA><EFBFBD>Ե<EFBFBD>ַģʽ */
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ori t0, t0, 3
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csrw mtvec, t0
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la t0, main
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csrw mepc, t0
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mret
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