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!372 [本次提交内容：在TI公司C6000 DSP处理器上成功移植rt-thread操作系统；主要在libcpu/ti-dsp/c6x添加keystone架构底层代码，在bsp/ti-c6678添加bsp工程，该工程已在本人的开发板上成功运行] 

Merge pull request !372 from hdwei/hdwei
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bernard 2022-01-28 01:38:42 +00:00 committed by Gitee
parent 32a5668593 c5ab5250bc
commit 1c4c186181
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3
bsp/ti-tms320c6678/.settings/org.eclipse.cdt.codan.core.prefs Normal file
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eclipse.preferences.version=1
inEditor=false
onBuild=false

2
bsp/ti-tms320c6678/.settings/org.eclipse.cdt.debug.core.prefs Normal file
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eclipse.preferences.version=1
org.eclipse.cdt.debug.core.toggleBreakpointModel=com.ti.ccstudio.debug.CCSBreakpointMarker

12
bsp/ti-tms320c6678/.settings/org.eclipse.core.resources.prefs Normal file
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eclipse.preferences.version=1
encoding//Debug/applications/subdir_rules.mk=UTF-8
encoding//Debug/applications/subdir_vars.mk=UTF-8
encoding//Debug/common/subdir_rules.mk=UTF-8
encoding//Debug/common/subdir_vars.mk=UTF-8
encoding//Debug/driver/subdir_rules.mk=UTF-8
encoding//Debug/driver/subdir_vars.mk=UTF-8
encoding//Debug/makefile=UTF-8
encoding//Debug/objects.mk=UTF-8
encoding//Debug/sources.mk=UTF-8
encoding//Debug/subdir_rules.mk=UTF-8
encoding//Debug/subdir_vars.mk=UTF-8

47
bsp/ti-tms320c6678/KeyStone.cmd Normal file
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/****************************************************************************/
/* */
/* M6678.cmd */
/* Copyright (c): NUDT */
/* */
/* */
/* Description: This file is a sample linker command file that can be */
/* used for linking programs built with the C compiler and */
/* running the resulting .out file on an M6678 */
/* device. Use it as a guideline. You will want to */
/* change the memory layout to match your specific C6xxx */
/* target system. You may want to change the allocation */
/* scheme according to the size of your program. */
/* */
/* */
/****************************************************************************/
-heap 0x800
-stack 0x1000
MEMORY
{
VECTORS: o = 0x00800000 l = 0x00000200
LL2_CODE: o = 0x00800200 l = 0x0001FE00
LL2_RW_DATA: o = 0x00820000 l = 0x00020000 /*set memory protection attribitue as read/write*/
}
SECTIONS
{
.vecs > VECTORS
.text > LL2_CODE
.cinit > LL2_CODE
.const > LL2_CODE
.switch > LL2_CODE
.stack > LL2_RW_DATA
GROUP
{
.neardata
.rodata
.bss
} > LL2_RW_DATA
.far > LL2_RW_DATA
.fardata > LL2_RW_DATA
.cio > LL2_RW_DATA
.sysmem > LL2_RW_DATA
}

49
bsp/ti-tms320c6678/README.md Normal file
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### 1. 简介
TMS320C6678是TI基于KeyStone的多核固定浮点数字信号处理器，DSP集成C66x CorePac，每个核心在1GHz至1.25 GHz的运行。该设备支持高性能的信号处理应用，如任务关键，医疗成像，测试和自动化。
### 2. 编译说明
TMS320C6678 工程的编译和下载要使用的是 TI 官方提供的 Code Composer Studio。在本工程使用的是 CCS5.5 版本编译调试，CCS5.5 Compiler version:TIv8.3.5进行编译，需要安装TI提供的CSL库pdk_C6678_1_1_2_6。
### 2.1 导入工程
首先打开 Code Composer Studio，点击 Project -> Import CCS Projects...
![输入图片说明](figures/import(1).png)
在打开的对话框中，点击 Select search -> directory 右边的 Browse... 选择 TMS320C6678 BSP 所在文件夹，如图所示。选择完成后点击 Finish 完成导入。
![输入图片说明](figures/import(2).png)
### 2.2 检查工程路径和编译器
- 检查工程路径是否正确，是否成功安装pdk_C6678_1_1_2_6，本工程安装路径为C盘。
![输入图片说明](figures/filepath.png)
- 检查编译器版本，本工程使用的是TIv8.3.5
![输入图片说明](figures/general.jpg)
### 3. 编译工程
导入工程后，选中导入的 ti-tms320c6678 工程，右键点击，在弹出的菜单中选择 Build Project 即可开始编译。
### 4. 加载和调试
编译完成后，可以开始加载和调试。将板子和 XDS560 仿真器连接，仿真器可以将编译生成的可执行文件加载到L2或MSMC执行。
- 如下图ti-tms320c6678.out是编译之后生成的可执行文件。
![输入图片说明](figures/debug(1).png)
- 本工程目前只支持单核运行，按如下图加载可执行文件。
![输入图片说明](figures/load.png)
- 加载可执行文件完成后，CCS将进入调试模式，可以选择继续运行、单步调试、复位等操作。
![输入图片说明](figures/debug(2).png)
到此，可以开启tms320c6678 + rt-thread的愉快旅程了 :smile: 。

37
bsp/ti-tms320c6678/applications/board.c Normal file
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/*
* Copyright (c) 2021, Shenzhen Academy of Aerospace Technology
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-11-16 Dystopia the first version
*/
#include "board.h"
#include "interrupt.h"
#include "drv_timer.h"
#include "common.h"
#include <rtthread.h>
/**
* This function will initial board.
*/
void rt_hw_board_init(void)
{
// initial CPU core
keystone_cpu_init();
// initial interrupt controller
rt_hw_interrupt_init();
// initial system timer
rt_hw_system_timer_init();
/* initialize memory system */
rt_kprintf("heap: 0x%08x - 0x%08x\n", RT_HW_HEAP_BEGIN, RT_HW_HEAP_END);
rt_system_heap_init(RT_HW_HEAP_BEGIN, RT_HW_HEAP_END);
rt_hw_system_timer_start();
}

20
bsp/ti-tms320c6678/applications/board.h Normal file
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/*
* Copyright (c) 2021, Shenzhen Academy of Aerospace Technology
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-11-16 Dystopia the first version
*/
#ifndef __BOARD_H__
#define __BOARD_H__
#define RT_HW_HEAP_BEGIN (void*)0x0C000000
#define RT_HW_HEAP_END (void*)0x0C100000
void rt_hw_board_init(void);
#endif /* __BOARD_H__ */

79
bsp/ti-tms320c6678/applications/main.c Normal file
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/*
* Copyright (c) 2021, Shenzhen Academy of Aerospace Technology
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-11-16 Dystopia the first version
*/
#include <rthw.h>
#include <rtthread.h>
#include "board.h"
void rt_init_thread_entry(void *parameter)
{
rt_kprintf("hello rt-thread\n");
}
int rt_application_init(void)
{
rt_thread_t tid;
tid = rt_thread_create("init", rt_init_thread_entry, RT_NULL, 4096, 3, 200);
if (tid != RT_NULL)
{
rt_thread_startup(tid);
} else {
return -1;
}
return 0;
}
/**
* This function will startup RT-Thread RTOS.
*/
void rtthread_startup(void)
{
/* disable interrupt first */
rt_hw_interrupt_disable();
/* init board */
rt_hw_board_init();
/* show version */
rt_show_version();
/* init timer system */
rt_system_timer_init();
/* init scheduler system */
rt_system_scheduler_init();
/* init application */
rt_application_init();
/* init timer thread */
rt_system_timer_thread_init();
/* init idle thread */
rt_thread_idle_init();
/* start scheduler */
rt_system_scheduler_start();
/* never reach here */
return ;
}
void main(void)
{
/* startup RT-Thread RTOS */
rtthread_startup();
for(;;){}
}

203
bsp/ti-tms320c6678/common/common.c Normal file
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/*
* Copyright (c) 2021, Shenzhen Academy of Aerospace Technology
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-11-16 Dystopia the first version
*/
#include "common.h"
CSL_BootcfgRegs * gp_bootcfg_regs = (CSL_BootcfgRegs *)CSL_BOOT_CFG_REGS;
CSL_CgemRegs * gp_cgem_regs = (CSL_CgemRegs *)CSL_CGEM0_5_REG_BASE_ADDRESS_REGS;
CSL_TmrPlusRegs * gp_timer_regs[9] = {
(CSL_TmrPlusRegs *)CSL_TIMER_0_REGS,
(CSL_TmrPlusRegs *)CSL_TIMER_1_REGS,
(CSL_TmrPlusRegs *)CSL_TIMER_2_REGS,
(CSL_TmrPlusRegs *)CSL_TIMER_3_REGS,
(CSL_TmrPlusRegs *)CSL_TIMER_4_REGS,
(CSL_TmrPlusRegs *)CSL_TIMER_5_REGS,
(CSL_TmrPlusRegs *)CSL_TIMER_6_REGS,
(CSL_TmrPlusRegs *)CSL_TIMER_7_REGS,
(CSL_TmrPlusRegs *)(CSL_TIMER_7_REGS+(CSL_TIMER_7_REGS-CSL_TIMER_6_REGS))
};
void cpu_interrupt_init(void)
{
//clear interrupt and excpetion events
ICR = IFR;
ECR = EFR;
IER = 3; //disable all interrupts
/* disable event combine */
gp_cgem_regs->EVTMASK[0] = 0xffffffff;
gp_cgem_regs->EVTMASK[1] = 0xffffffff;
gp_cgem_regs->EVTMASK[2] = 0xffffffff;
gp_cgem_regs->EVTMASK[3] = 0xffffffff;
/*Clear all CPU events*/
gp_cgem_regs->EVTCLR[0] = 0xFFFFFFFF;
gp_cgem_regs->EVTCLR[1] = 0xFFFFFFFF;
gp_cgem_regs->EVTCLR[2] = 0xFFFFFFFF;
gp_cgem_regs->EVTCLR[3] = 0xFFFFFFFF;
/*Interrupt Service Table Pointer to begining of LL2 memory*/
ISTP = 0x800000;
}
void keystone_cpu_init(void)
{
/* clear all interrupt flag/status, setup ISTP to begining of LL2 */
cpu_interrupt_init();
}
/*===============================Timer=================================*/
void reset_timer(int timer_num)
{
if(gp_timer_regs[timer_num]->TGCR)
{
gp_timer_regs[timer_num]->TGCR = 0;
gp_timer_regs[timer_num]->TCR= 0;
}
}
void timer64_init(Timer64_Config * tmrCfg)
{
reset_timer(tmrCfg->timer_num);
gp_timer_regs[tmrCfg->timer_num]->CNTLO = 0;
gp_timer_regs[tmrCfg->timer_num]->CNTHI = 0;
/*please note, in clock mode, two timer periods generate a clock,
one timer period output high voltage level, the other timer period
output low voltage level, so, the timer period should be half to the
desired output clock period*/
if(TIMER_PERIODIC_CLOCK == tmrCfg->timerMode)
{
tmrCfg->period = tmrCfg->period/2;
}
/*the value written into period register is the expected value minus one*/
gp_timer_regs[tmrCfg->timer_num]->PRDLO = _loll(tmrCfg->period-1);
gp_timer_regs[tmrCfg->timer_num]->PRDHI = _hill(tmrCfg->period-1);
if(tmrCfg->reload_period>1)
{
gp_timer_regs[tmrCfg->timer_num]->RELLO = _loll(tmrCfg->reload_period-1);
gp_timer_regs[tmrCfg->timer_num]->RELHI = _hill(tmrCfg->reload_period-1);
}
if(TIMER_WATCH_DOG == tmrCfg->timerMode)
{
gp_timer_regs[tmrCfg->timer_num]->TGCR =
/*Select watch-dog mode*/
(CSL_TMR_TIMMODE_WDT << CSL_TMR_TGCR_TIMMODE_SHIFT)
/*Remove the timer from reset*/
| (CSL_TMR_TGCR_TIMLORS_MASK)
| (CSL_TMR_TGCR_TIMHIRS_MASK);
}
else if(TIMER_PERIODIC_WAVE == tmrCfg->timerMode)
{
gp_timer_regs[tmrCfg->timer_num]->TGCR = TMR_TGCR_PLUSEN_MASK
/*for plus featuers, dual 32-bit unchained timer mode should be used*/
| (CSL_TMR_TIMMODE_DUAL_UNCHAINED << CSL_TMR_TGCR_TIMMODE_SHIFT)
/*Remove the timer from reset*/
| (CSL_TMR_TGCR_TIMLORS_MASK);
//in plus mode, interrupt/event must be enabled manually
gp_timer_regs[tmrCfg->timer_num]->INTCTL_STAT= TMR_INTCTLSTAT_EN_ALL_CLR_ALL;
}
else
{
gp_timer_regs[tmrCfg->timer_num]->TGCR =
/*Select 64-bit general timer mode*/
(CSL_TMR_TIMMODE_GPT << CSL_TMR_TGCR_TIMMODE_SHIFT)
/*Remove the timer from reset*/
| (CSL_TMR_TGCR_TIMLORS_MASK)
| (CSL_TMR_TGCR_TIMHIRS_MASK);
}
/*make timer stop with emulation*/
gp_timer_regs[tmrCfg->timer_num]->EMUMGT_CLKSPD = (gp_timer_regs[tmrCfg->timer_num]->EMUMGT_CLKSPD&
~(CSL_TMR_EMUMGT_CLKSPD_FREE_MASK|CSL_TMR_EMUMGT_CLKSPD_SOFT_MASK));
if(TIMER_WATCH_DOG == tmrCfg->timerMode)
{
/*enable watchdog timer*/
gp_timer_regs[tmrCfg->timer_num]->WDTCR = CSL_TMR_WDTCR_WDEN_MASK
| (CSL_TMR_WDTCR_WDKEY_CMD1 << CSL_TMR_WDTCR_WDKEY_SHIFT);
gp_timer_regs[tmrCfg->timer_num]->TCR =
(CSL_TMR_CLOCK_INP_NOGATE << CSL_TMR_TCR_TIEN_LO_SHIFT)
| (CSL_TMR_CLKSRC_INTERNAL << CSL_TMR_TCR_CLKSRC_LO_SHIFT)
/*The timer is enabled continuously*/
| (CSL_TMR_ENAMODE_CONT << CSL_TMR_TCR_ENAMODE_LO_SHIFT)
| ((tmrCfg->pulseWidth << CSL_TMR_TCR_PWID_LO_SHIFT)&CSL_TMR_TCR_PWID_LO_MASK)
/*select pulse mode*/
| (CSL_TMR_CP_PULSE << CSL_TMR_TCR_CP_LO_SHIFT)
| (CSL_TMR_INVINP_UNINVERTED << CSL_TMR_TCR_INVINP_LO_SHIFT)
| (CSL_TMR_INVOUTP_UNINVERTED << CSL_TMR_TCR_INVOUTP_LO_SHIFT)
| (0 << CSL_TMR_TCR_TSTAT_LO_SHIFT);
/*active watchdog timer*/
gp_timer_regs[tmrCfg->timer_num]->WDTCR = CSL_TMR_WDTCR_WDEN_MASK
| (CSL_TMR_WDTCR_WDKEY_CMD2 << CSL_TMR_WDTCR_WDKEY_SHIFT);
}
else if(TIMER_ONE_SHOT_PULSE == tmrCfg->timerMode)
{
gp_timer_regs[tmrCfg->timer_num]->TCR =
(CSL_TMR_CLOCK_INP_NOGATE << CSL_TMR_TCR_TIEN_LO_SHIFT)
| (CSL_TMR_CLKSRC_INTERNAL << CSL_TMR_TCR_CLKSRC_LO_SHIFT)
/*The timer is enabled one-shot*/
| (CSL_TMR_ENAMODE_ENABLE << CSL_TMR_TCR_ENAMODE_LO_SHIFT)
| ((tmrCfg->pulseWidth << CSL_TMR_TCR_PWID_LO_SHIFT)&CSL_TMR_TCR_PWID_LO_MASK)
/*select pulse mode*/
| (CSL_TMR_CP_PULSE << CSL_TMR_TCR_CP_LO_SHIFT)
| (CSL_TMR_INVINP_UNINVERTED << CSL_TMR_TCR_INVINP_LO_SHIFT)
| (CSL_TMR_INVOUTP_UNINVERTED << CSL_TMR_TCR_INVOUTP_LO_SHIFT)
| (0 << CSL_TMR_TCR_TSTAT_LO_SHIFT);
}
else if(TIMER_PERIODIC_CLOCK == tmrCfg->timerMode)
{
gp_timer_regs[tmrCfg->timer_num]->TCR =
(CSL_TMR_CLOCK_INP_NOGATE << CSL_TMR_TCR_TIEN_LO_SHIFT)
| (CSL_TMR_CLKSRC_INTERNAL << CSL_TMR_TCR_CLKSRC_LO_SHIFT)
/*The timer is enabled continuously*/
| (CSL_TMR_ENAMODE_CONT << CSL_TMR_TCR_ENAMODE_LO_SHIFT)
| ((tmrCfg->pulseWidth << CSL_TMR_TCR_PWID_LO_SHIFT)&CSL_TMR_TCR_PWID_LO_MASK)
/*select clock mode*/
| (CSL_TMR_CP_CLOCK << CSL_TMR_TCR_CP_LO_SHIFT)
| (CSL_TMR_INVINP_UNINVERTED << CSL_TMR_TCR_INVINP_LO_SHIFT)
| (CSL_TMR_INVOUTP_UNINVERTED << CSL_TMR_TCR_INVOUTP_LO_SHIFT)
| (0 << CSL_TMR_TCR_TSTAT_LO_SHIFT);
}
else if(TIMER_PERIODIC_WAVE == tmrCfg->timerMode)
{
gp_timer_regs[tmrCfg->timer_num]->TCR =
(CSL_TMR_CLOCK_INP_NOGATE << CSL_TMR_TCR_TIEN_LO_SHIFT)
| (CSL_TMR_CLKSRC_INTERNAL << CSL_TMR_TCR_CLKSRC_LO_SHIFT)
/*The timer is enabled continuously with period reload*/
| (CSL_TMR_ENAMODE_CONT_RELOAD << CSL_TMR_TCR_ENAMODE_LO_SHIFT)
| ((tmrCfg->pulseWidth << CSL_TMR_TCR_PWID_LO_SHIFT)&CSL_TMR_TCR_PWID_LO_MASK)
/*select clock mode*/
| (CSL_TMR_CP_CLOCK << CSL_TMR_TCR_CP_LO_SHIFT)
| (CSL_TMR_INVINP_UNINVERTED << CSL_TMR_TCR_INVINP_LO_SHIFT)
| (CSL_TMR_INVOUTP_UNINVERTED << CSL_TMR_TCR_INVOUTP_LO_SHIFT)
| (0 << CSL_TMR_TCR_TSTAT_LO_SHIFT);
}
else /*TIMER_PERIODIC_PULSE*/
{
gp_timer_regs[tmrCfg->timer_num]->TCR =
(CSL_TMR_CLOCK_INP_NOGATE << CSL_TMR_TCR_TIEN_LO_SHIFT)
| (CSL_TMR_CLKSRC_INTERNAL << CSL_TMR_TCR_CLKSRC_LO_SHIFT)
/*The timer is enabled continuously*/
| (CSL_TMR_ENAMODE_CONT << CSL_TMR_TCR_ENAMODE_LO_SHIFT)
| ((tmrCfg->pulseWidth << CSL_TMR_TCR_PWID_LO_SHIFT)&CSL_TMR_TCR_PWID_LO_MASK)
/*select clock mode*/
| (CSL_TMR_CP_PULSE << CSL_TMR_TCR_CP_LO_SHIFT)
| (CSL_TMR_INVINP_UNINVERTED << CSL_TMR_TCR_INVINP_LO_SHIFT)
| (CSL_TMR_INVOUTP_UNINVERTED << CSL_TMR_TCR_INVOUTP_LO_SHIFT)
| (0 << CSL_TMR_TCR_TSTAT_LO_SHIFT);
}
}

110
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/*
* Copyright (c) 2021, Shenzhen Academy of Aerospace Technology
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-11-16 Dystopia the first version
*/
#ifndef __COMMON_H__
#define __COMMON_H__
#include <c6x.h>
#include <cslr_cgem.h>
#include <cslr_device.h>
#include <cslr_bootcfg.h>
#include <cslr_tmr.h>
#include <csl_tmr.h>
/* DSP core clock speed in Hz */
#define DSP_CORE_SPEED_HZ 1000000000
extern CSL_CgemRegs * gp_cgem_regs;
extern CSL_BootcfgRegs * gp_bootcfg_regs;
/*----------------------Timer plus registers definition----------------*/
typedef struct {
volatile unsigned int PID12;
volatile unsigned int EMUMGT_CLKSPD;
volatile unsigned int GPINT_EN;
volatile unsigned int GPDIR_DAT;
volatile unsigned int CNTLO;
volatile unsigned int CNTHI;
volatile unsigned int PRDLO;
volatile unsigned int PRDHI;
volatile unsigned int TCR;
volatile unsigned int TGCR;
volatile unsigned int WDTCR;
volatile unsigned int TLGC;
volatile unsigned int TLMR;
volatile unsigned int RELLO;
volatile unsigned int RELHI;
volatile unsigned int CAPLO;
volatile unsigned int CAPHI;
volatile unsigned int INTCTL_STAT;
volatile unsigned char RSVD0[24];
volatile unsigned int TIMERLO_COMPARE_REG[8];
volatile unsigned char RSVD1[32];
} CSL_TmrPlusRegs;
#define TMR_TCR_READRSTMODE_HI_SHIFT (26)
#define TMR_TCR_CAPEVTMODE_LO_SHIFT (12)
#define TMR_TCR_CAPMODE_LO_SHIFT (11)
#define TMR_TCR_READRSTMODE_LO_SHIFT (10)
#define TMR_TCR_READRSTMODE_HI_MASK (1<<26)
#define TMR_TCR_CAPEVTMODE_LO_MASK (3<<12)
#define TMR_TCR_CAPMODE_LO_MASK (1<<11)
#define TMR_TCR_READRSTMODE_LO_MASK (1<<10)
#define TMR_TGCR_PLUSEN_SHIFT 4
#define TMR_TGCR_PLUSEN_MASK (1<<4)
#define TMR_INTCTLSTAT_EN_ALL_CLR_ALL 0x000F000F
#define CSL_TMR_WDTCR_WDKEY_CMD1 (0x0000A5C6u)
#define CSL_TMR_WDTCR_WDKEY_CMD2 (0x0000DA7Eu)
#define CSL_TMR_ENAMODE_CONT_RELOAD 3
extern CSL_TmrPlusRegs * gp_timer0_regs;
extern CSL_TmrPlusRegs * gp_timer1_regs;
extern CSL_TmrPlusRegs * gp_timer2_regs;
extern CSL_TmrPlusRegs * gp_timer3_regs;
extern CSL_TmrPlusRegs * gp_timer4_regs;
extern CSL_TmrPlusRegs * gp_timer5_regs;
extern CSL_TmrPlusRegs * gp_timer6_regs;
extern CSL_TmrPlusRegs * gp_timer7_regs;
extern CSL_TmrPlusRegs * gp_timer8_regs;
extern CSL_TmrPlusRegs * gp_timer_regs[];
typedef enum
{
TIMER_ONE_SHOT_PULSE = 0, /*generate one shot pulse with timer*/
TIMER_PERIODIC_PULSE, /*generate periodic pulse with timer*/
TIMER_PERIODIC_CLOCK, /*generate periodic clock with timer*/
/*generate periodic square wave with period reload feature, the difference
between wave and clock is the duty cycle of clock is always 50%*/
TIMER_PERIODIC_WAVE,
TIMER_WATCH_DOG /*configure timer as watch dog*/
}TTimerMode;
typedef struct {
int timer_num; /*select one timer*/
TTimerMode timerMode; /*select function of the timer*/
unsigned long long period; /*in the unit of DSP core clock/6*/
unsigned long long reload_period; /*the reload value of period*/
int pulseWidth; /*pulse width between 0~3*/
}Timer64_Config;
/* Reset a 64-bit timer */
extern void reset_timer(int timer_num);
/* Initailize a 64-bit timer */
extern void timer64_init(Timer64_Config * tmrCfg);
extern void keystone_cpu_init(void);
#endif /* __COMMON_H__ */

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/*
* Copyright (c) 2021, Shenzhen Academy of Aerospace Technology
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-11-16 Dystopia the first version
*/
#include "drv_timer.h"
#include "interrupt.h"
#include "common.h"
#include <rthw.h>
#include <rtthread.h>
/**
* This is the timer interrupt service routine.
*
*/
void rt_hw_systick_isr(void)
{
/* enter interrupt */
rt_interrupt_enter();
rt_tick_increase();
/* leave interrupt */
rt_interrupt_leave();
}
/**
* The function initial system timer interrupt.
*/
void rt_hw_system_timer_init(void)
{
// initial system timer interrupt, map local timer interrupt to INT14
gp_cgem_regs->INTMUX3 = (CSL_GEM_TINTLN << CSL_CGEM_INTMUX3_INTSEL14_SHIFT);
// enable CPU INT14
rt_hw_interrupt_umask(1 << 14);
return ;
}
/**
* The function initial system timer.
* Use local timer (== DNUM of a core) to generate a clock on TIMO0,interrupts are generated as well
*
*/
void rt_hw_system_timer_start(void)
{
Timer64_Config tmrCfg;
// select output on TIMO0 from local timer.
gp_bootcfg_regs->TOUTSEL = (DNUM*2) << CSL_BOOTCFG_TOUTSEL_TOUTSEL0_SHIFT;
// configure the timer to generate clocks and interrupts
tmrCfg.timer_num = DNUM;
tmrCfg.timerMode = TIMER_PERIODIC_CLOCK;
tmrCfg.period = (unsigned long long) RT_TICK_PER_SECOND * DSP_CORE_SPEED_HZ / 6000;
tmrCfg.reload_period = 0;
// initial timer
timer64_init(&tmrCfg);
}

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/*
* Copyright (c) 2021, Shenzhen Academy of Aerospace Technology
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-11-16 Dystopia the first version
*/
#ifndef __SYS_TIMER_H__
#define __SYS_TIMER_H__
#include <c6x.h>
#include <tistdtypes.h>
void rt_hw_system_timer_init(void);
void rt_hw_system_timer_start(void);
#endif /* __SYS_TIMER_H__ */

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#ifndef RT_CONFIG_H__
#define RT_CONFIG_H__
/* Automatically generated file; DO NOT EDIT. */
/* RT-Thread Configuration */
#define SOC_C6678
/* RT-Thread Kernel */
#define RT_NAME_MAX 8
#define RT_USING_ARCH_DATA_TYPE
#define RT_ALIGN_SIZE 4
#define RT_THREAD_PRIORITY_8
#define RT_THREAD_PRIORITY_MAX 8
#define RT_TICK_PER_SECOND 100
//#define RT_USING_HOOK
//#define RT_USING_IDLE_HOOK
//#define RT_IDLE_HOOK_LIST_SIZE 4
#define IDLE_THREAD_STACK_SIZE 4096
//#define RT_DEBUG
//#define RT_DEBUG_COLOR
/* Inter-Thread communication */
#define RT_USING_SEMAPHORE
#define RT_USING_MUTEX
#define RT_USING_EVENT
#define RT_USING_MAILBOX
#define RT_USING_MESSAGEQUEUE
/* Memory Management */
#define RT_USING_MEMPOOL
#define RT_USING_SMALL_MEM
#define RT_USING_HEAP
/* Kernel Device Object */
/* RT-Thread Components */
/* C++ features */
/* Command shell */
/* Device virtual file system */
/* Device Drivers */
/* Using WiFi */
/* Using USB */
/* POSIX layer and C standard library */
/* Network */
/* Socket abstraction layer */
/* light weight TCP/IP stack */
/* Modbus master and slave stack */
/* AT commands */
/* VBUS(Virtual Software BUS) */
/* Utilities */
/* RT-Thread online packages */
/* IoT - internet of things */
/* Wi-Fi */
/* Marvell WiFi */
/* Wiced WiFi */
/* IoT Cloud */
/* security packages */
/* language packages */
/* multimedia packages */
/* tools packages */
/* system packages */
/* peripheral libraries and drivers */
/* miscellaneous packages */
/* samples: kernel and components samples */
#include "rtconfig_project.h"
#endif

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/*
* Copyright (c) 2006-2019, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2019-03-27 xuzhuoyi the first version
*/
#ifndef __RTCONFIG_PROJECT_H__
#define __RTCONFIG_PROJECT_H__
typedef signed char rt_int8_t; /**< 8bit integer type */
typedef signed short rt_int16_t; /**< 16bit integer type */
typedef signed long rt_int32_t; /**< 32bit integer type */
typedef signed long long rt_int64_t; /**< 64bit integer type */
typedef unsigned char rt_uint8_t; /**< 8bit unsigned integer type */
typedef unsigned short rt_uint16_t; /**< 16bit unsigned integer type */
typedef unsigned long rt_uint32_t; /**< 32bit unsigned integer type */
typedef unsigned long long rt_uint64_t; /**< 64bit unsigned integer type */
#endif

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# RT-Thread building script for component
from building import *
Import('rtconfig')
cwd = GetCurrentDir()
src = Glob('*.c') + Glob('*.cpp') + Glob('*.asm')
CPPPATH = [cwd]
ASFLAGS = ''
group = DefineGroup('CPU', src, depend = [''], CPPPATH = CPPPATH, ASFLAGS = ASFLAGS)
Return('group')

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/*
* Copyright (c) 2021, Shenzhen Academy of Aerospace Technology
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-11-16 Dystopia the first version
*/
#ifndef __C66XX_H__
#define __C66XX_H__
extern __cregister volatile unsigned int IERR; /* Internal Exception Report Register */
extern __cregister volatile unsigned int ECR; /* Exception Clear Register */
extern __cregister volatile unsigned int EFR; /* Exception Flag Register */
extern __cregister volatile unsigned int TSR; /* Task State Register */
extern __cregister volatile unsigned int ITSR; /* Interrupt Task State Register */
extern __cregister volatile unsigned int NTSR; /* NMI/exception Task State Register */
extern __cregister volatile unsigned int TSCL; /* Time Stamp Counter Register - Low Half */
extern __cregister volatile unsigned int TSCH; /* Time Stamp Counter Register - High Half */
extern __cregister volatile unsigned int DNUM; /* Core number */
extern __cregister volatile unsigned int AMR;
extern __cregister volatile unsigned int CSR;
extern __cregister volatile unsigned int IFR;
extern __cregister volatile unsigned int ISR;
extern __cregister volatile unsigned int ICR;
extern __cregister volatile unsigned int IER;
extern __cregister volatile unsigned int ISTP;
extern __cregister volatile unsigned int IRP;
extern __cregister volatile unsigned int NRP;
#ifdef _BIG_ENDIAN
#define RT_REG_PAIR(odd, even) unsigned long odd; unsigned long even
#else
#define RT_REG_PAIR(odd, even) unsigned long even; unsigned long odd
#endif
struct rt_hw_register
{
RT_REG_PAIR(b17, b16);
RT_REG_PAIR(b19, b18);
RT_REG_PAIR(b21, b20);
RT_REG_PAIR(b23, b22);
RT_REG_PAIR(b25, b24);
RT_REG_PAIR(b27, b26);
RT_REG_PAIR(b29, b28);
RT_REG_PAIR(b31, b30);
RT_REG_PAIR(b1, b0);
RT_REG_PAIR(b3, b2);
RT_REG_PAIR(b5, b4);
RT_REG_PAIR(b7, b6);
RT_REG_PAIR(b9, b8);
RT_REG_PAIR(b11, b10);
RT_REG_PAIR(b13, b12);
RT_REG_PAIR(a17, a16);
RT_REG_PAIR(a19, a18);
RT_REG_PAIR(a21, a20);
RT_REG_PAIR(a23, a22);
RT_REG_PAIR(a25, a24);
RT_REG_PAIR(a27, a26);
RT_REG_PAIR(a29, a28);
RT_REG_PAIR(a31, a30);
RT_REG_PAIR(a1, a0);
RT_REG_PAIR(a3, a2);
RT_REG_PAIR(a5, a4);
RT_REG_PAIR(a7, a6);
RT_REG_PAIR(a9, a8);
RT_REG_PAIR(a11, a10);
RT_REG_PAIR(a13, a12);
RT_REG_PAIR(a15, a14);
RT_REG_PAIR(sp, dp);
};
typedef struct rt_hw_exp_stack_register
{
RT_REG_PAIR(tsr, orig_a4);
RT_REG_PAIR(rilc, ilc);
RT_REG_PAIR(pc, csr);
struct rt_hw_register hw_register;
} rt_hw_thread_stack_register;
#define __dint() asm(" DINT")
#define __rint() asm(" RINT")
#define __system_call() asm(" SWE")
#define __enter_idle() asm(" IDLE")
#define __nop() asm(" NOP")
#define __mfence() asm(" MFENCE")
#define __SYSREG(ADDR, TYPE) (*(volatile TYPE*)(ADDR))
#define __SYSREGA(ADDR, TYPE) ((volatile TYPE*)(ADDR))
#endif /* __C66XX_H__ */

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;
; Copyright (c) 2021, Shenzhen Academy of Aerospace Technology
;
; SPDX-License-Identifier: Apache-2.0
;
; Change Logs:
; Date Author Notes
; 2021-11-16 Dystopia the first version
;
;-----------------------------------------------------------
; context switch for C6000 DSP
;-----------------------------------------------------------
.include "contextinc.asm"
;-----------------------------------------------------------
; macro definition
;-----------------------------------------------------------
DP .set B14
SP .set B15
;
;-----------------------------------------------------------
;
;-----------------------------------------------------------
; global variable
;-----------------------------------------------------------
.global rt_interrupt_from_thread
.global rt_interrupt_to_thread
.global rt_thread_switch_interrupt_flag
;
;-----------------------------------------------------------
;
.sect ".text"
;-----------------------------------------------------------
; void rt_hw_enable_exception(void)
;-----------------------------------------------------------
.global rt_hw_enable_exception
rt_hw_enable_exception:
DINT
MVC .S2 TSR,B0
MVC .S2 B3,NRP
MVK .L2 0xC,B1
OR .D2 B0,B1,B0
MVC .S2 B0,TSR ; Set GEE and XEN in TSR
B .S2 NRP
NOP 5
;-----------------------------------------------------------
; rt_base_t rt_hw_interrupt_enable(void)
;-----------------------------------------------------------
.global rt_hw_interrupt_disable
rt_hw_interrupt_disable:
;{
MVC CSR,B4
MV B4,A4
AND 1,B4,B0
[!B0] CLR B4,1,1,B4
[B0] SET B4,1,1,B4
CLR B4,0,0,B4
MVC B4,CSR
B B3
NOP 5
;}
;-----------------------------------------------------------
; void rt_hw_interrupt_enable(rt_base_t scr)
;-----------------------------------------------------------
.global rt_hw_interrupt_enable
rt_hw_interrupt_enable:
;{
MVC A4,CSR
B B3
NOP 5
;}
;-----------------------------------------------------------
; rt_uint32_t rt_hw_get_current_dp(void)
;-----------------------------------------------------------
.global rt_hw_get_current_dp
rt_hw_get_current_dp:
;{
B B3
MV B14, A4
NOP 4
;}
;-----------------------------------------------------------
; rt_int32_t __fls(rt_int32_t val)
;-----------------------------------------------------------
.global __fls
__fls:
;{
B B3
LMBD .L1 1,A4,A4
NOP 4
;}
;-----------------------------------------------------------
; rt_int32_t __ffs(rt_int32_t val)
;-----------------------------------------------------------
.global __ffs
__ffs:
;{
BITR .M1 A4,A4
B B3
LMBD .L1 1,A4,A4
NOP 4
;}
;
;-----------------------------------------------------------
;
;
; void rt_hw_context_switch(rt_uint32 from, rt_uint32 to);
; A4 --> from
; B4 --> to
;
.global rt_hw_context_switch
rt_hw_context_switch:
; {
SUBAW .D2 SP,2,SP
ADD .D1X SP,-8,A15
|| STDW .D2T1 A15:A14,*SP--[3] ; Store A15:A14
STDW .D2T2 B13:B12,*SP--[1] ; Store B13:B12
|| STDW .D1T1 A13:A12,*A15--[1] ; Store A13:A12
|| MV B3,B13
STDW .D2T2 B11:B10,*SP--[1] ; Store B11:B10
|| STDW .D1T1 A11:A10,*A15--[1] ; Store A11:A10
|| MVC .S2 CSR,B12
STDW .D2T2 B13:B12,*SP--[1] ; Store PC:CSR
|| MVC .S2 TSR,B5
MVC .S2 ILC,B11
MVC .S2 RILC,B10
STDW .D2T2 B11:B10,*SP--[1] ; Store RILC:ILC
|| MV .S1X B5,A3
ZERO A2 ;
STDW .D2T1 A3:A2,*SP--[1] ; Store TSR:stack type
STW SP,*A4 ; Save thread's stack pointer
B rt_hw_context_switch_to
MV B4,A4
NOP 4
;}
;
; void rt_hw_context_switch_to(rt_uint32 to);
; A4 --> to
;
.global rt_hw_context_switch_to
rt_hw_context_switch_to:
;{
LDW *A4,SP
NOP 4
LDDW .D2T2 *++SP[1],B9:B8 ; get TSR (B9) and stack frame type (B8)
LDDW .D2T2 *++SP[1],B11:B10 ; get RILC (B11) and ILC (B10)
LDDW .D2T2 *++SP[1],B13:B12 ; get PC (B13) and CSR (B12)
NOP 2
MV B8,B0
[B0] BNOP _rt_thread_interrupt_stack, 5
;
; this maybe do better
;
LDDW .D2T2 *++SP[1],B11:B10
|| MVC .S2 B11,RILC ; Restore RILC
LDDW .D2T2 *++SP[1],B13:B12
|| MVC .S2 B10,ILC ; Restore ILC
LDDW .D2T1 *++SP[1],A11:A10
|| MV B13,B3 ; Restore PC
LDDW .D2T1 *++SP[1],A13:A12
|| MVC .S2 B12,CSR ; Restore CSR
LDDW .D2T1 *++SP[1],A15:A14
B B3 ; Return to caller
ADDAW .D2 SP,2,SP
NOP 4 ; Delay slots
_rt_thread_interrupt_stack:
ADDAW .D1X SP,30,A15
LDDW .D1T1 *++A15[1],A17:A16
|| LDDW .D2T2 *++SP[1],B17:B16
LDDW .D1T1 *++A15[1],A19:A18
|| LDDW .D2T2 *++SP[1],B19:B18
LDDW .D1T1 *++A15[1],A21:A20
|| LDDW .D2T2 *++SP[1],B21:B20
LDDW .D1T1 *++A15[1],A23:A22
|| LDDW .D2T2 *++SP[1],B23:B22
LDDW .D1T1 *++A15[1],A25:A24
|| LDDW .D2T2 *++SP[1],B25:B24
LDDW .D1T1 *++A15[1],A27:A26
|| LDDW .D2T2 *++SP[1],B27:B26
LDDW .D1T1 *++A15[1],A29:A28
|| LDDW .D2T2 *++SP[1],B29:B28
LDDW .D1T1 *++A15[1],A31:A30
|| LDDW .D2T2 *++SP[1],B31:B30
LDDW .D1T1 *++A15[1],A1:A0
|| LDDW .D2T2 *++SP[1],B1:B0
LDDW .D1T1 *++A15[1],A3:A2
|| LDDW .D2T2 *++SP[1],B3:B2
|| MVC .S2 B9,ITSR ; Restore ITSR
LDDW .D1T1 *++A15[1],A5:A4
|| LDDW .D2T2 *++SP[1],B5:B4
|| MVC .S2 B11,RILC ; Restore RILC
LDDW .D1T1 *++A15[1],A7:A6
|| LDDW .D2T2 *++SP[1],B7:B6
|| MVC .S2 B10,ILC ; Restore ILC
LDDW .D1T1 *++A15[1],A9:A8
|| LDDW .D2T2 *++SP[1],B9:B8
|| MVC .S2 B13,IRP ; Restore IPR
LDDW .D1T1 *++A15[1],A11:A10
|| LDDW .D2T2 *++SP[1],B11:B10
|| MVC .S2 B12,CSR ; Restore CSR
LDDW .D1T1 *++A15[1],A13:A12
|| LDDW .D2T2 *++SP[1],B13:B12
MV .D2X A15,SP
LDDW .D2T1 *++SP[1],A15:A14
B IRP ; Return to point of interrupt
LDDW .D2T2 *+SP[1],SP:DP
NOP 4 ; Delay slots
;}
;
;-----------------------------------------------------------
;
;
; void rt_hw_context_switch_interrupt(rt_uint32_t from, rt_uint32_t to)
; A4 --> from
; B4 --> to
;{
.global rt_hw_context_switch_interrupt
rt_hw_context_switch_interrupt:
SUB B15,0x8,B15
STW B4,*B15[2]
STW A4,*B15[1]
LDW *+B14(rt_thread_switch_interrupt_flag),B4
NOP 4
CMPEQ 1,B4,B0
[ B0] BNOP _reswitch,5
MVK 1,B4
STW B4,*+B14(rt_thread_switch_interrupt_flag)
MV A4,B4
STW B4,*+B14(rt_interrupt_from_thread)
_reswitch:
LDW *B15[2],B4
NOP 4
STW B4,*+B14(rt_interrupt_to_thread)
ADD 8,B15,B15
BNOP B3,5
;}
;-----------------------------------------------------------
;
;void rt_interrupt_context_restore(void)
;
.global rt_interrupt_context_restore
rt_interrupt_context_restore:
;{
MVKL rt_thread_switch_interrupt_flag,A3
MVKH rt_thread_switch_interrupt_flag,A3
LDW *A3,A1
NOP 4
CMPEQ 1,A1,A2
[A2] BNOP rt_preempt_context_restore,5
LDDW .D2T2 *++SP[1],B9:B8 ; get TSR (B9)
LDDW .D2T2 *++SP[1],B11:B10 ; get RILC (B11) and ILC (B10)
LDDW .D2T2 *++SP[1],B13:B12 ; get PC (B13) and CSR (B12)
ADDAW .D1X SP,30,A15
LDDW .D1T1 *++A15[1],A17:A16
|| LDDW .D2T2 *++SP[1],B17:B16
LDDW .D1T1 *++A15[1],A19:A18
|| LDDW .D2T2 *++SP[1],B19:B18
LDDW .D1T1 *++A15[1],A21:A20
|| LDDW .D2T2 *++SP[1],B21:B20
LDDW .D1T1 *++A15[1],A23:A22
|| LDDW .D2T2 *++SP[1],B23:B22
LDDW .D1T1 *++A15[1],A25:A24
|| LDDW .D2T2 *++SP[1],B25:B24
LDDW .D1T1 *++A15[1],A27:A26
|| LDDW .D2T2 *++SP[1],B27:B26
LDDW .D1T1 *++A15[1],A29:A28
|| LDDW .D2T2 *++SP[1],B29:B28
LDDW .D1T1 *++A15[1],A31:A30
|| LDDW .D2T2 *++SP[1],B31:B30
LDDW .D1T1 *++A15[1],A1:A0
|| LDDW .D2T2 *++SP[1],B1:B0
LDDW .D1T1 *++A15[1],A3:A2
|| LDDW .D2T2 *++SP[1],B3:B2
|| MVC .S2 B9,ITSR
LDDW .D1T1 *++A15[1],A5:A4
|| LDDW .D2T2 *++SP[1],B5:B4
|| MVC .S2 B11,RILC
LDDW .D1T1 *++A15[1],A7:A6
|| LDDW .D2T2 *++SP[1],B7:B6
|| MVC .S2 B10,ILC
LDDW .D1T1 *++A15[1],A9:A8
|| LDDW .D2T2 *++SP[1],B9:B8
|| MVC .S2 B13,IRP
LDDW .D1T1 *++A15[1],A11:A10
|| LDDW .D2T2 *++SP[1],B11:B10
|| MVC .S2 B12,CSR
LDDW .D1T1 *++A15[1],A13:A12
|| LDDW .D2T2 *++SP[1],B13:B12
MV .D2X A15,SP
|| MVKL .S1 rt_system_stack_top,A15
MVKH .S1 rt_system_stack_top,A15
|| ADDAW .D1X SP,6,A14
STW .D1T1 A14,*A15 ; save system stack pointer
LDDW .D2T1 *++SP[1],A15:A14
B .S2 IRP ; return from interruption
LDDW .D2T2 *+SP[1],SP:DP
NOP 4
rt_preempt_context_restore:
ZERO A12
STW A12,*A3 ; clear rt_thread_switch_interrupt_flag
;
; restore saved registers by system stack
;
RESTORE_ALL IRP,ITSR
;
; store registers to thread stack
;
THREAD_SAVE_ALL IRP,ITSR
MVKL rt_interrupt_from_thread,A11
MVKH rt_interrupt_from_thread,A11
LDW *A11,A10
NOP
MVKL rt_interrupt_to_thread,B10
MVKH rt_interrupt_to_thread,B10
LDW *B10,B11
NOP 3
STW SP,*A10 ; store sp in preempted tasks's TCB
B rt_hw_context_switch_to
MV B11,A4
NOP 4
;}
.end

192
libcpu/ti-dsp/c6x/contextinc.asm Normal file
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;
; Copyright (c) 2021, Shenzhen Academy of Aerospace Technology
;
; SPDX-License-Identifier: Apache-2.0
;
; Change Logs:
; Date Author Notes
; 2021-11-16 Dystopia the first version
;
;-----------------------------------------------------------
; extern variable
;-----------------------------------------------------------
.ref rt_system_stack_top
;-----------------------------------------------------------
; macro definition
;-----------------------------------------------------------
SAVE_ALL .macro __rp, __tsr
STW .D2T2 B0,*SP--[2] ; save original B0
MVKL .S2 rt_system_stack_top,B0
MVKH .S2 rt_system_stack_top,B0
LDW .D2T2 *B0,B1 ; system stack
NOP 3
STW .D2T2 B1,*+SP[1] ; save original B1
XOR .D2 SP,B1,B0 ; check current stack types
LDW .D2T2 *+SP[1],B1 ; restore B0/B1
LDW .D2T2 *++SP[2],B0
SHR .S2 B0,12,B0 ; 0 if already using system stack
[B0] STDW .D2T2 SP:DP,*--B1[1] ; thread: save thread sp/dp system stack
[B0] MV .S2 B1,SP ; and switch to system stack
||[!B0] STDW .D2T2 SP:DP,*--SP[1] ; kernel: nest interrupt save(not support)
SUBAW .D2 SP,2,SP
ADD .D1X SP,-8,A15
|| STDW .D2T1 A15:A14,*SP--[16] ; save A15:A14
STDW .D2T2 B13:B12,*SP--[1]
|| STDW .D1T1 A13:A12,*A15--[1]
|| MVC .S2 __rp,B13
STDW .D2T2 B11:B10,*SP--[1]
|| STDW .D1T1 A11:A10,*A15--[1]
|| MVC .S2 CSR,B12
STDW .D2T2 B9:B8,*SP--[1]
|| STDW .D1T1 A9:A8,*A15--[1]
|| MVC .S2 RILC,B11
STDW .D2T2 B7:B6,*SP--[1]
|| STDW .D1T1 A7:A6,*A15--[1]
|| MVC .S2 ILC,B10
STDW .D2T2 B5:B4,*SP--[1]
|| STDW .D1T1 A5:A4,*A15--[1]
STDW .D2T2 B3:B2,*SP--[1]
|| STDW .D1T1 A3:A2,*A15--[1]
|| MVC .S2 __tsr,B5
STDW .D2T2 B1:B0,*SP--[1]
|| STDW .D1T1 A1:A0,*A15--[1]
|| MV .S1X B5,A5
STDW .D2T2 B31:B30,*SP--[1]
|| STDW .D1T1 A31:A30,*A15--[1]
|| MVKL 1,A4
STDW .D2T2 B29:B28,*SP--[1]
|| STDW .D1T1 A29:A28,*A15--[1]
STDW .D2T2 B27:B26,*SP--[1]
|| STDW .D1T1 A27:A26,*A15--[1]
STDW .D2T2 B25:B24,*SP--[1]
|| STDW .D1T1 A25:A24,*A15--[1]
STDW .D2T2 B23:B22,*SP--[1]
|| STDW .D1T1 A23:A22,*A15--[1]
STDW .D2T2 B21:B20,*SP--[1]
|| STDW .D1T1 A21:A20,*A15--[1]
STDW .D2T2 B19:B18,*SP--[1]
|| STDW .D1T1 A19:A18,*A15--[1]
STDW .D2T2 B17:B16,*SP--[1]
|| STDW .D1T1 A17:A16,*A15--[1]
STDW .D2T2 B13:B12,*SP--[1] ; save PC and CSR
STDW .D2T2 B11:B10,*SP--[1] ; save RILC and ILC
STDW .D2T1 A5:A4,*SP--[1] ; save TSR and orig A4(stack type)
.endm
RESTORE_ALL .macro __rp, __tsr
LDDW .D2T2 *++SP[1],B9:B8 ; get TSR (B9)
LDDW .D2T2 *++SP[1],B11:B10 ; get RILC (B11) and ILC (B10)
LDDW .D2T2 *++SP[1],B13:B12 ; get PC (B13) and CSR (B12)
ADDAW .D1X SP,30,A15
LDDW .D1T1 *++A15[1],A17:A16
|| LDDW .D2T2 *++SP[1],B17:B16
LDDW .D1T1 *++A15[1],A19:A18
|| LDDW .D2T2 *++SP[1],B19:B18
LDDW .D1T1 *++A15[1],A21:A20
|| LDDW .D2T2 *++SP[1],B21:B20
LDDW .D1T1 *++A15[1],A23:A22
|| LDDW .D2T2 *++SP[1],B23:B22
LDDW .D1T1 *++A15[1],A25:A24
|| LDDW .D2T2 *++SP[1],B25:B24
LDDW .D1T1 *++A15[1],A27:A26
|| LDDW .D2T2 *++SP[1],B27:B26
LDDW .D1T1 *++A15[1],A29:A28
|| LDDW .D2T2 *++SP[1],B29:B28
LDDW .D1T1 *++A15[1],A31:A30
|| LDDW .D2T2 *++SP[1],B31:B30
LDDW .D1T1 *++A15[1],A1:A0
|| LDDW .D2T2 *++SP[1],B1:B0
LDDW .D1T1 *++A15[1],A3:A2
|| LDDW .D2T2 *++SP[1],B3:B2
|| MVC .S2 B9,__tsr
LDDW .D1T1 *++A15[1],A5:A4
|| LDDW .D2T2 *++SP[1],B5:B4
|| MVC .S2 B11,RILC
LDDW .D1T1 *++A15[1],A7:A6
|| LDDW .D2T2 *++SP[1],B7:B6
|| MVC .S2 B10,ILC
LDDW .D1T1 *++A15[1],A9:A8
|| LDDW .D2T2 *++SP[1],B9:B8
|| MVC .S2 B13,__rp
LDDW .D1T1 *++A15[1],A11:A10
|| LDDW .D2T2 *++SP[1],B11:B10
|| MVC .S2 B12,CSR
LDDW .D1T1 *++A15[1],A13:A12
|| LDDW .D2T2 *++SP[1],B13:B12
MV .D2X A15,SP
|| MVKL .S1 rt_system_stack_top,A15
MVKH .S1 rt_system_stack_top,A15
|| ADDAW .D1X SP,6,A14
STW .D1T1 A14,*A15 ; save system stack pointer
LDDW .D2T1 *++SP[1],A15:A14
LDDW .D2T2 *+SP[1],SP:DP
NOP 4
.endm
THREAD_SAVE_ALL .macro __rp, __tsr
STDW .D2T2 SP:DP,*--SP[1]
SUBAW .D2 SP,2,SP
ADD .D1X SP,-8,A15
|| STDW .D2T1 A15:A14,*SP--[16] ; save A15:A14
STDW .D2T2 B13:B12,*SP--[1]
|| STDW .D1T1 A13:A12,*A15--[1]
|| MVC .S2 __rp,B13
STDW .D2T2 B11:B10,*SP--[1]
|| STDW .D1T1 A11:A10,*A15--[1]
|| MVC .S2 CSR,B12
STDW .D2T2 B9:B8,*SP--[1]
|| STDW .D1T1 A9:A8,*A15--[1]
|| MVC .S2 RILC,B11
STDW .D2T2 B7:B6,*SP--[1]
|| STDW .D1T1 A7:A6,*A15--[1]
|| MVC .S2 ILC,B10
STDW .D2T2 B5:B4,*SP--[1]
|| STDW .D1T1 A5:A4,*A15--[1]
STDW .D2T2 B3:B2,*SP--[1]
|| STDW .D1T1 A3:A2,*A15--[1]
|| MVC .S2 __tsr,B5
STDW .D2T2 B1:B0,*SP--[1]
|| STDW .D1T1 A1:A0,*A15--[1]
|| MV .S1X B5,A5
STDW .D2T2 B31:B30,*SP--[1]
|| STDW .D1T1 A31:A30,*A15--[1]
|| MVKL 1,A4
STDW .D2T2 B29:B28,*SP--[1]
|| STDW .D1T1 A29:A28,*A15--[1]
STDW .D2T2 B27:B26,*SP--[1]
|| STDW .D1T1 A27:A26,*A15--[1]
STDW .D2T2 B25:B24,*SP--[1]
|| STDW .D1T1 A25:A24,*A15--[1]
STDW .D2T2 B23:B22,*SP--[1]
|| STDW .D1T1 A23:A22,*A15--[1]
STDW .D2T2 B21:B20,*SP--[1]
|| STDW .D1T1 A21:A20,*A15--[1]
STDW .D2T2 B19:B18,*SP--[1]
|| STDW .D1T1 A19:A18,*A15--[1]
STDW .D2T2 B17:B16,*SP--[1]
|| STDW .D1T1 A17:A16,*A15--[1]
STDW .D2T2 B13:B12,*SP--[1] ; save PC and CSR
STDW .D2T2 B11:B10,*SP--[1] ; save RILC and ILC
STDW .D2T1 A5:A4,*SP--[1] ; save TSR and orig A4(stack type)
.endm

196
libcpu/ti-dsp/c6x/cpuport.c Normal file
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/*
* Copyright (c) 2021, Shenzhen Academy of Aerospace Technology
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-11-16 Dystopia the first version
*/
#include <rthw.h>
#include <rtthread.h>
#include "trap.h"
/*------------ rt_hw_cpu_shutdown() function ----------------------------------
* DESCRIPTION: Shutdown CPU
* ARGUMENTS:
* None
* RETURNED VALUE: None
-----------------------------------------------------------------------------*/
RT_WEAK void rt_hw_cpu_shutdown(void)
{
rt_kprintf("shutdown...\n");
rt_hw_interrupt_disable();
RT_ASSERT(0);
}
/*------------ nested_exception_handler() function ---------------------------
* DESCRIPTION: Function handles Nested Exception
* ARGUMENTS:
* None
* RETURNED VALUE: None
-----------------------------------------------------------------------------*/
void nested_exception_handler(void)
{
for(;;){}
}
/*------------ hw_nmi_handler() function --------------------------------------
* DESCRIPTION: Function handles NMI interrupt
* ARGUMENTS:
* None
* RETURNED VALUE: None
-----------------------------------------------------------------------------*/
void hw_nmi_handler(struct rt_hw_exp_stack_register *regs)
{
for(;;){}
}
/*------------ hw_bad_handler() function --------------------------------------
* DESCRIPTION: Function handles Bad interrupt
* ARGUMENTS:
* None
* RETURNED VALUE: None
-----------------------------------------------------------------------------*/
void hw_bad_handler(void)
{
for(;;){}
}
/*------------ hw_int4_handler() function -------------------------------------
* DESCRIPTION: Function handles INT4 interrupt
* ARGUMENTS:
* None
* RETURNED VALUE: None
-----------------------------------------------------------------------------*/
void hw_int4_handler(void)
{
}
/*------------ hw_int5_handler() function -------------------------------------
* DESCRIPTION: Function handles INT5 interrupt
* ARGUMENTS:
* None
* RETURNED VALUE: None
-----------------------------------------------------------------------------*/
void hw_int5_handler(void)
{
}
/*------------ hw_int6_handler() function -------------------------------------
* DESCRIPTION: Function handles INT6 interrupt
* ARGUMENTS:
* None
* RETURNED VALUE: None
-----------------------------------------------------------------------------*/
void hw_int6_handler(void)
{
}
/*------------ hw_int7_handler() function -------------------------------------
* DESCRIPTION: Function handles INT7 interrupt
* ARGUMENTS:
* None
* RETURNED VALUE: None
-----------------------------------------------------------------------------*/
void hw_int7_handler(void)
{
}
/*------------ hw_int8_handler() function -------------------------------------
* DESCRIPTION: Function handles INT8 interrupt
* ARGUMENTS:
* None
* RETURNED VALUE: None
-----------------------------------------------------------------------------*/
void hw_int8_handler(void)
{
}
/*------------ hw_int9_handler() function -------------------------------------
* DESCRIPTION: Function handles INT9 interrupt
* ARGUMENTS:
* None
* RETURNED VALUE: None
-----------------------------------------------------------------------------*/
void hw_int9_handler(void)
{
}
/*------------ hw_int10_handler() function ------------------------------------
* DESCRIPTION: Function handles INT10 interrupt
* ARGUMENTS:
* None
* RETURNED VALUE: None
-----------------------------------------------------------------------------*/
void hw_int10_handler(void)
{
}
/*------------ hw_int11_handler() function ------------------------------------
* DESCRIPTION: Function handles INT11 interrupt
* ARGUMENTS:
* None
* RETURNED VALUE: None
-----------------------------------------------------------------------------*/
void hw_int11_handler(void)
{
}
/*------------ hw_int12_handler() function ------------------------------------
* DESCRIPTION: Function handles INT12 interrupt
* ARGUMENTS:
* None
* RETURNED VALUE: None
-----------------------------------------------------------------------------*/
void hw_int12_handler(void)
{
}
/*------------ hw_int13_handler() function ------------------------------------
* DESCRIPTION: Function handles INT13 interrupt
* ARGUMENTS:
* None
* RETURNED VALUE: None
-----------------------------------------------------------------------------*/
void hw_int13_handler(void)
{
}
/*------------------ hw_int14_handler() function ------------------------------
* DESCRIPTION: Function handles INT14 interrupt
* ARGUMENTS:
* None
* RETURNED VALUE:
-----------------------------------------------------------------------------*/
void hw_int14_handler(void)
{
extern void rt_hw_systick_isr();
rt_hw_systick_isr();
}
/*------------ hw_int15_handler() function ------------------------------------
* DESCRIPTION: Function handles INT15 interrupt
* ARGUMENTS:
* None
* RETURNED VALUE: None
-----------------------------------------------------------------------------*/
void hw_int15_handler(void)
{
}

104
libcpu/ti-dsp/c6x/interrupt.c Normal file
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/*
* Copyright (c) 2021, Shenzhen Academy of Aerospace Technology
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-11-16 Dystopia the first version
*/
#include "interrupt.h"
#include "c66xx.h"
#include "trap.h"
#define MAX_HANDLERS 128
extern volatile rt_uint8_t rt_interrupt_nest;
struct rt_irq_desc isr_table[MAX_HANDLERS];
rt_uint32_t rt_interrupt_from_thread;
rt_uint32_t rt_interrupt_to_thread;
rt_uint32_t rt_thread_switch_interrupt_flag;
/**
* This function will initialize hardware interrupt
*/
void rt_hw_interrupt_init(void)
{
// initial system trap
//rt_trap_init();
/* init exceptions table */
rt_memset(isr_table, 0x00, sizeof(isr_table));
/* init interrupt nest, and context in thread sp */
rt_interrupt_nest = 0;
rt_interrupt_from_thread = 0;
rt_interrupt_to_thread = 0;
rt_thread_switch_interrupt_flag = 0;
}
/**
* This function will mask a interrupt.
* @param vector the interrupt number
*/
void rt_hw_interrupt_mask(int vector)
{
if (vector < 0 || vector >= MAX_HANDLERS)
{
return;
}
}
/**
* This function will un-mask a interrupt.
* @param vector the interrupt number
*/
void rt_hw_interrupt_umask(int vector)
{
if (vector < 0 || vector >= MAX_HANDLERS)
{
return;
}
ICR = vector;
IER |= vector;
//enable GIE
TSR = TSR | 1;
}
/**
* This function will install a interrupt service routine to a interrupt.
* @param vector the interrupt number
* @param new_handler the interrupt service routine to be installed
* @param old_handler the old interrupt service routine
*/
rt_isr_handler_t rt_hw_interrupt_install(int vector, rt_isr_handler_t handler,
void *param, const char *name)
{
rt_isr_handler_t old_handler = RT_NULL;
if (vector < MAX_HANDLERS || vector >= 0)
{
old_handler = isr_table[vector].handler;
if (handler != RT_NULL)
{
#ifdef RT_USING_INTERRUPT_INFO
rt_strncpy(isr_table[vector].name, name, RT_NAME_MAX);
#endif /* RT_USING_INTERRUPT_INFO */
isr_table[vector].handler = handler;
isr_table[vector].param = param;
}
}
return old_handler;
}
void rt_hw_interrupt_clear(int vector)
{
if (vector < 0 || vector >= MAX_HANDLERS)
{
return;
}
}

24
libcpu/ti-dsp/c6x/interrupt.h Normal file
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/*
* Copyright (c) 2021, Shenzhen Academy of Aerospace Technology
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-11-16 Dystopia the first version
*/
#ifndef __INTERRUPT_H__
#define __INTERRUPT_H__
#include <rthw.h>
#include <rtthread.h>
void rt_hw_interrupt_init(void);
void rt_hw_interrupt_mask(int vector);
void rt_hw_interrupt_umask(int vector);
void rt_hw_interrupt_clear(int vector);
rt_isr_handler_t rt_hw_interrupt_install(int vector, rt_isr_handler_t handler,
void *param, const char *name);
#endif /* __INTERRUPT_H__ */

263
libcpu/ti-dsp/c6x/intexc.asm Normal file
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;
; Copyright (c) 2021, Shenzhen Academy of Aerospace Technology
;
; SPDX-License-Identifier: Apache-2.0
;
; Change Logs:
; Date Author Notes
; 2021-11-16 Dystopia the first version
;
;-----------------------------------------------------------
; interrupt and execption handler for C6000 DSP
;-----------------------------------------------------------
;-----------------------------------------------------------
; macro definition
;-----------------------------------------------------------
DP .set B14
SP .set B15
;
;-----------------------------------------------------------
;
.include "contextinc.asm"
;-----------------------------------------------------------
; global function
;-----------------------------------------------------------
.global _nmi_handler
.global _bad_handler
.global _int4_handler
.global _int5_handler
.global _int6_handler
.global _int7_handler
.global _int8_handler
.global _int9_handler
.global _int10_handler
.global _int11_handler
.global _int12_handler
.global _int13_handler
.global _int14_handler
.global _int15_handler
;
;-----------------------------------------------------------
;
;-----------------------------------------------------------
; extern function
;-----------------------------------------------------------
.ref hw_nmi_handler
.ref hw_bad_handler
.ref hw_int4_handler
.ref hw_int5_handler
.ref hw_int6_handler
.ref hw_int7_handler
.ref hw_int8_handler
.ref hw_int9_handler
.ref hw_int10_handler
.ref hw_int11_handler
.ref hw_int12_handler
.ref hw_int13_handler
.ref hw_int14_handler
.ref hw_int15_handler
.ref rt_hw_process_exception
.ref rt_interrupt_context_restore
;
;-----------------------------------------------------------
;
;-----------------------------------------------------------
; interrupt macro definition
;-----------------------------------------------------------
RT_INTERRUPT_ENTRY .macro
SAVE_ALL IRP,ITSR
.endm
RT_CALL_INT .macro __isr
B __isr
ADDKPC $1 ,B3,4
$1:
B .S1 rt_interrupt_context_restore
NOP 5
.endm
;-----------------------------------------------------------
; execption macro definition
;-----------------------------------------------------------
RT_EXECPTION_ENTRY .macro
SAVE_ALL NRP,NTSR
.endm
RT_EXECPTION_EXIT .macro
RESTORE_ALL NRP,NTSR
B .S2 NRP ; return from execption
NOP 5
.endm
;
;-----------------------------------------------------------
;
.sect ".text"
;
;-----------------------------------------------------------
;
;-----------------------------------------------------------
; handler NMI interrupt
;-----------------------------------------------------------
_nmi_handler:
;{
RT_EXECPTION_ENTRY
MVC .S2 EFR,B2
CMPEQ .L2 1,B2,B2
|| MVC .S2 TSR,B1
MV .D1X B2,A2
|| CLR .S2 B1,10,10,B1
MVC .S2 B1,TSR
[!A2] MVKL .S1 rt_hw_process_exception,A0
||[B2] MVKL .S2 rt_hw_software_exception,B1
[!A2] MVKH .S1 rt_hw_process_exception,A0
||[B2] MVKH .S2 rt_hw_software_exception,B1
[!B2] B .S2X A0
[B2] B .S2 B1
[!B2] ADDAW .D2 SP,2,B1
[!B2] MV .D1X B1,A4
ADDKPC .S2 ret_from_trap,B3,2
;
; return from trap
;
ret_from_trap:
MV .D2X A4,B0
[!B0] MVKL .S2 ret_from_exception,B3
[!B0] MVKH .S2 ret_from_exception,B3
[!B0] BNOP .S2 B3,5
;
; return from trap restore exception context
;
ret_from_exception:
RT_EXECPTION_EXIT
;
rt_hw_software_exception:
MVKL .S1 rt_hw_process_exception,A0
MVKH .S1 rt_hw_process_exception,A0
B .S2X A0
ADDAW .D2 SP,2,B1
MV .D1X B1,A4
ADDKPC .S2 ret_from_trap,B3,2
NOP 2
;}
;-----------------------------------------------------------
; handler bad interrupt
;-----------------------------------------------------------
_bad_handler:
;{
RT_INTERRUPT_ENTRY
RT_CALL_INT hw_bad_handler
;}
;-----------------------------------------------------------
; handler INT4 interrupt
;-----------------------------------------------------------
_int4_handler:
;{
RT_INTERRUPT_ENTRY
RT_CALL_INT hw_int4_handler
;}
;-----------------------------------------------------------
; handler INT5 interrupt
;-----------------------------------------------------------
_int5_handler:
;{
RT_INTERRUPT_ENTRY
RT_CALL_INT hw_int5_handler
;}
;-----------------------------------------------------------
; handler INT6 interrupt
;-----------------------------------------------------------
_int6_handler:
;{
RT_INTERRUPT_ENTRY
RT_CALL_INT hw_int6_handler
;}
;-----------------------------------------------------------
; handler INT7 interrupt
;-----------------------------------------------------------
_int7_handler:
;{
RT_INTERRUPT_ENTRY
RT_CALL_INT hw_int7_handler
;}
;-----------------------------------------------------------
; handler INT8 interrupt
;-----------------------------------------------------------
_int8_handler:
;{
RT_INTERRUPT_ENTRY
RT_CALL_INT hw_int8_handler
;}
;-----------------------------------------------------------
; handler INT9 interrupt
;-----------------------------------------------------------
_int9_handler:
;{
RT_INTERRUPT_ENTRY
RT_CALL_INT hw_int9_handler
;}
;-----------------------------------------------------------
; handler INT10 interrupt
;-----------------------------------------------------------
_int10_handler:
;{
RT_INTERRUPT_ENTRY
RT_CALL_INT hw_int10_handler
;}
;-----------------------------------------------------------
; handler INT11 interrupt
;-----------------------------------------------------------
_int11_handler:
;{
RT_INTERRUPT_ENTRY
RT_CALL_INT hw_int11_handler
;}
;-----------------------------------------------------------
; handler INT12 interrupt
;-----------------------------------------------------------
_int12_handler:
;{
RT_INTERRUPT_ENTRY
RT_CALL_INT hw_int12_handler
;}
;-----------------------------------------------------------
; handler INT13 interrupt
;-----------------------------------------------------------
_int13_handler:
;{
RT_INTERRUPT_ENTRY
RT_CALL_INT hw_int13_handler
;}
;-----------------------------------------------------------
; handler INT14 interrupt
;-----------------------------------------------------------
_int14_handler:
;{
RT_INTERRUPT_ENTRY
RT_CALL_INT hw_int14_handler
;}
;-----------------------------------------------------------
; handler INT15 interrupt
;-----------------------------------------------------------
_int15_handler:
;{
RT_INTERRUPT_ENTRY
RT_CALL_INT hw_int15_handler
;}
.end

120
libcpu/ti-dsp/c6x/stack.c Normal file
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/*
* Copyright (c) 2021, Shenzhen Academy of Aerospace Technology
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-11-16 Dystopia the first version
*/
#include <rtthread.h>
#include <c66xx.h>
extern rt_uint32_t rt_hw_get_current_dp(void);
/**
* @addtogroup C66xx
*/
/*@{*/
/**
* This function will initialize thread stack
*
* @param tentry the entry of thread
* @param parameter the parameter of entry
* @param stack_addr the beginning stack address
* @param texit the function will be called when thread exit
*
* @return stack address
*/
rt_uint8_t *rt_hw_stack_init(void *tentry, void *parameter,
rt_uint8_t *stack_addr, void *texit)
{
rt_hw_thread_stack_register *thread_context = RT_NULL;
rt_uint32_t stk = 0;
stack_addr += sizeof(rt_uint32_t);
stack_addr = (rt_uint8_t *)RT_ALIGN_DOWN((rt_uint32_t)stack_addr, 8);
stk = (rt_uint32_t)stack_addr;
thread_context = (rt_hw_thread_stack_register *)(stk - sizeof(rt_hw_thread_stack_register));
thread_context->pc = (rt_uint32_t)tentry;
thread_context->csr = 0x0103;
thread_context->tsr = 0x3;
thread_context->orig_a4 = 1;
thread_context->ilc = 0;
thread_context->rilc = 0;
thread_context->hw_register.b17 = 0xB17;
thread_context->hw_register.b16 = 0xB16;
thread_context->hw_register.b19 = 0xB19;
thread_context->hw_register.b18 = 0xB18;
thread_context->hw_register.b21 = 0xB21;
thread_context->hw_register.b20 = 0xB20;
thread_context->hw_register.b23 = 0xB23;
thread_context->hw_register.b22 = 0xB22;
thread_context->hw_register.b25 = 0xB25;
thread_context->hw_register.b24 = 0xB24;
thread_context->hw_register.b27 = 0xB27;
thread_context->hw_register.b26 = 0xB26;
thread_context->hw_register.b29 = 0xB29;
thread_context->hw_register.b28 = 0xB28;
thread_context->hw_register.b31 = 0xB31;
thread_context->hw_register.b30 = 0xB30;
thread_context->hw_register.b1 = 0xB01;
thread_context->hw_register.b0 = 0xB00;
thread_context->hw_register.b3 = (rt_uint32_t)texit;
thread_context->hw_register.b2 = 0xB02;
thread_context->hw_register.b5 = 0xB05;
thread_context->hw_register.b4 = 0xB04;
thread_context->hw_register.b7 = 0xB07;
thread_context->hw_register.b6 = 0xB06;
thread_context->hw_register.b9 = 0xB09;
thread_context->hw_register.b8 = 0xB08;
thread_context->hw_register.b11 = 0xB11;
thread_context->hw_register.b10 = 0xB10;
thread_context->hw_register.b13 = 0xB13;
thread_context->hw_register.b12 = 0xB12;
thread_context->hw_register.a17 = 0xA17;
thread_context->hw_register.a16 = 0xA16;
thread_context->hw_register.a19 = 0xA19;
thread_context->hw_register.a18 = 0xA18;
thread_context->hw_register.a21 = 0xA21;
thread_context->hw_register.a20 = 0xA20;
thread_context->hw_register.a23 = 0xA23;
thread_context->hw_register.a22 = 0xA22;
thread_context->hw_register.a25 = 0xA25;
thread_context->hw_register.a24 = 0xA24;
thread_context->hw_register.a27 = 0xA27;
thread_context->hw_register.a26 = 0xA26;
thread_context->hw_register.a29 = 0xA29;
thread_context->hw_register.a28 = 0xA28;
thread_context->hw_register.a31 = 0xA31;
thread_context->hw_register.a30 = 0xA30;
thread_context->hw_register.a1 = 0xA01;
thread_context->hw_register.a0 = 0xA00;
thread_context->hw_register.a3 = 0xA03;
thread_context->hw_register.a2 = 0xA02;
thread_context->hw_register.a5 = 0xA05;
thread_context->hw_register.a4 = (rt_uint32_t)parameter;
thread_context->hw_register.a7 = 0xA07;
thread_context->hw_register.a6 = 0xA06;
thread_context->hw_register.a9 = 0xA09;
thread_context->hw_register.a8 = 0xA08;
thread_context->hw_register.a11 = 0xA11;
thread_context->hw_register.a10 = 0xA10;
thread_context->hw_register.a13 = 0xA13;
thread_context->hw_register.a12 = 0xA12;
thread_context->hw_register.a15 = 0xA15;
thread_context->hw_register.a14 = 0xA14;
thread_context->hw_register.dp = rt_hw_get_current_dp();
thread_context->hw_register.sp = (rt_uint32_t)stk;
/* return task's current stack address */
return (rt_uint8_t *)thread_context - 8;
}

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/*
* Copyright (c) 2021, Shenzhen Academy of Aerospace Technology
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-11-16 Dystopia the first version
*/
#include "trap.h"
#include "c66xx.h"
#include <rthw.h>
#include <rtdef.h>
#include <rtthread.h>
#define RT_SYS_STACK_SIZE 4096
rt_uint8_t rt_system_stack[RT_SYS_STACK_SIZE];
rt_uint8_t *rt_system_stack_top;
void rt_trap_init(void)
{
rt_system_stack_top = &rt_system_stack[RT_SYS_STACK_SIZE-1];
rt_system_stack_top = (rt_uint8_t *)RT_ALIGN_DOWN((rt_uint32_t)rt_system_stack_top, 8);
ack_exception(EXCEPT_TYPE_NXF);
ack_exception(EXCEPT_TYPE_EXC);
ack_exception(EXCEPT_TYPE_IXF);
ack_exception(EXCEPT_TYPE_SXF);
rt_hw_enable_exception();
}
void show_regs(struct rt_hw_exp_stack_register *regs)
{
rt_kprintf("\n");
rt_kprintf("PC: %08lx SP: %08lx\n",
regs->pc, regs->hw_register.sp);
rt_kprintf("Status: %08lx ORIG_A4: %08lx\n",
regs->csr, regs->orig_a4);
rt_kprintf("A0: %08lx B0: %08lx\n",
regs->hw_register.a0, regs->hw_register.b0);
rt_kprintf("A1: %08lx B1: %08lx\n",
regs->hw_register.a1, regs->hw_register.b1);
rt_kprintf("A2: %08lx B2: %08lx\n",
regs->hw_register.a2, regs->hw_register.b2);
rt_kprintf("A3: %08lx B3: %08lx\n",
regs->hw_register.a3, regs->hw_register.b3);
rt_kprintf("A4: %08lx B4: %08lx\n",
regs->hw_register.a4, regs->hw_register.b4);
rt_kprintf("A5: %08lx B5: %08lx\n",
regs->hw_register.a5, regs->hw_register.b5);
rt_kprintf("A6: %08lx B6: %08lx\n",
regs->hw_register.a6, regs->hw_register.b6);
rt_kprintf("A7: %08lx B7: %08lx\n",
regs->hw_register.a7, regs->hw_register.b7);
rt_kprintf("A8: %08lx B8: %08lx\n",
regs->hw_register.a8, regs->hw_register.b8);
rt_kprintf("A9: %08lx B9: %08lx\n",
regs->hw_register.a9, regs->hw_register.b9);
rt_kprintf("A10: %08lx B10: %08lx\n",
regs->hw_register.a10, regs->hw_register.b10);
rt_kprintf("A11: %08lx B11: %08lx\n",
regs->hw_register.a11, regs->hw_register.b11);
rt_kprintf("A12: %08lx B12: %08lx\n",
regs->hw_register.a12, regs->hw_register.b12);
rt_kprintf("A13: %08lx B13: %08lx\n",
regs->hw_register.a13, regs->hw_register.b13);
rt_kprintf("A14: %08lx B14: %08lx\n",
regs->hw_register.a14, regs->hw_register.dp);
rt_kprintf("A15: %08lx B15: %08lx\n",
regs->hw_register.a15, regs->hw_register.sp);
rt_kprintf("A16: %08lx B16: %08lx\n",
regs->hw_register.a16, regs->hw_register.b16);
rt_kprintf("A17: %08lx B17: %08lx\n",
regs->hw_register.a17, regs->hw_register.b17);
rt_kprintf("A18: %08lx B18: %08lx\n",
regs->hw_register.a18, regs->hw_register.b18);
rt_kprintf("A19: %08lx B19: %08lx\n",
regs->hw_register.a19, regs->hw_register.b19);
rt_kprintf("A20: %08lx B20: %08lx\n",
regs->hw_register.a20, regs->hw_register.b20);
rt_kprintf("A21: %08lx B21: %08lx\n",
regs->hw_register.a21, regs->hw_register.b21);
rt_kprintf("A22: %08lx B22: %08lx\n",
regs->hw_register.a22, regs->hw_register.b22);
rt_kprintf("A23: %08lx B23: %08lx\n",
regs->hw_register.a23, regs->hw_register.b23);
rt_kprintf("A24: %08lx B24: %08lx\n",
regs->hw_register.a24, regs->hw_register.b24);
rt_kprintf("A25: %08lx B25: %08lx\n",
regs->hw_register.a25, regs->hw_register.b25);
rt_kprintf("A26: %08lx B26: %08lx\n",
regs->hw_register.a26, regs->hw_register.b26);
rt_kprintf("A27: %08lx B27: %08lx\n",
regs->hw_register.a27, regs->hw_register.b27);
rt_kprintf("A28: %08lx B28: %08lx\n",
regs->hw_register.a28, regs->hw_register.b28);
rt_kprintf("A29: %08lx B29: %08lx\n",
regs->hw_register.a29, regs->hw_register.b29);
rt_kprintf("A30: %08lx B30: %08lx\n",
regs->hw_register.a30, regs->hw_register.b30);
rt_kprintf("A31: %08lx B31: %08lx\n",
regs->hw_register.a31, regs->hw_register.b31);
}
void do_trap(struct rt_exception_info *except_info, struct rt_hw_exp_stack_register *regs)
{
rt_kprintf("Enter exception: %s\n", except_info->kernel_str);
show_regs(regs);
for(;;){}
}
static struct rt_exception_info iexcept_table[10] = {
{ " - instruction fetch", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - fetch packet", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - execute packet", ABORT_TYPE_UNDDEF, ABORT_OPCODE_ILL },
{ " - undefined instruction", ABORT_TYPE_UNDDEF, ABORT_OPCODE_ILL },
{ " - resource conflict", ABORT_TYPE_UNDDEF, ABORT_OPCODE_ILL },
{ " - resource access", ABORT_TYPE_UNDDEF, ABORT_PRVREG_ILL },
{ " - privilege", ABORT_TYPE_UNDDEF, ABORT_PRVOPC_ILL },
{ " - loops buffer", ABORT_TYPE_UNDDEF, ABORT_PRVOPC_ILL },
{ " - software exception", ABORT_TYPE_UNDDEF, ABORT_ILLTRP_ILL },
{ " - unknown exception", ABORT_TYPE_UNDDEF, ABORT_PRVOPC_ILL }
};
/*
* Process an internal exception (non maskable)
*/
static int process_iexcept(struct rt_hw_exp_stack_register *regs)
{
unsigned int iexcept_report = get_iexcept();
unsigned int iexcept_num = 0;
ack_exception(EXCEPT_TYPE_IXF);
while(iexcept_report)
{
iexcept_num = ffs(iexcept_report);
iexcept_report &= ~(1 << iexcept_num);
set_iexcept(iexcept_report);
if (*(unsigned int *)regs->pc == BKPT_OPCODE)
{
/* This is a breakpoint */
struct rt_exception_info bkpt_exception = \
{ " - undefined instruction",\
ABORT_TYPE_UNDDEF, ABORT_BRKPT_ILL };
do_trap(&bkpt_exception, regs);
iexcept_report &= ~(0xFF);
set_iexcept(iexcept_report);
continue;
}
do_trap(&iexcept_table[iexcept_num], regs);
}
return 0;
}
static struct rt_exception_info eexcept_table[128] = {
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - external exception", ABORT_TYPE_BUS, ABORT_BUS_ADDRERR },
{ " - CPU memory protection fault", ABORT_TYPE_MAP, ABORT_BUS_ACCERR },
{ " - CPU memory protection fault in L1P", ABORT_TYPE_MAP, ABORT_BUS_ACCERR },
{ " - DMA memory protection fault in L1P", ABORT_TYPE_MAP, ABORT_BUS_ACCERR },
{ " - CPU memory protection fault in L1D", ABORT_TYPE_MAP, ABORT_BUS_ACCERR },
{ " - DMA memory protection fault in L1D", ABORT_TYPE_MAP, ABORT_BUS_ACCERR },
{ " - CPU memory protection fault in L2", ABORT_TYPE_MAP, ABORT_BUS_ACCERR },
{ " - DMA memory protection fault in L2", ABORT_TYPE_MAP, ABORT_BUS_ACCERR },
{ " - EMC CPU memory protection fault", ABORT_TYPE_MAP, ABORT_BUS_ACCERR },
{ " - EMC bus error", ABORT_TYPE_MAP, ABORT_BUS_ADDRERR }
};
/*
* Process an external exception (maskable)
*/
static void process_eexcept(struct rt_hw_exp_stack_register *regs)
{
int except_num = 0;
int bank = 0;
int i = 0;
for (i = 0; i <= 3; i++)
{
while (INTC_MEXPMASK[i])
{
__dint();
except_num = ffs(INTC_MEXPMASK[i]);
INTC_MEXPMASK[i] &= ~(1 << except_num); /* ack the external exception */
__rint();
do_trap(&eexcept_table[except_num + (bank << 5)], regs);
}
bank++;
}
ack_exception(EXCEPT_TYPE_EXC);
}
extern void hw_nmi_handler(struct rt_hw_exp_stack_register *regs);
/*
* Main exception processing
*/
int rt_hw_process_exception(struct rt_hw_exp_stack_register *regs)
{
int type = 0;
int type_num = 0;
int ie_num = 9; /* default is unknown exception */
while ((type = get_except_type()) != 0) {
type_num = fls(type) - 1;
switch(type_num) {
case EXCEPT_TYPE_NXF: /* NMI exception */
ack_exception(EXCEPT_TYPE_NXF); /* clear exception */
if (hw_nmi_handler != RT_NULL)
{
hw_nmi_handler(regs);
}
break;
case EXCEPT_TYPE_IXF: /* internal exception */
if (process_iexcept(regs))
{
return 1;
}
break;
case EXCEPT_TYPE_EXC: /* external exception */
process_eexcept(regs);
break;
case EXCEPT_TYPE_SXF: /* software exception */
ie_num = 8;
ack_exception(type_num);
break;
default: /* clear exception */
ack_exception(type_num);
do_trap(&iexcept_table[ie_num], regs);
break;
}
}
return 0;
}

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/*
* Copyright (c) 2021, Shenzhen Academy of Aerospace Technology
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-11-16 Dystopia the first version
*/
#ifndef __TRAP_H__
#define __TRAP_H__
#include "c66xx.h"
/*
* exception operation macro
*/
#define disable_exception()
#define get_except_type() EFR
#define ack_exception(type) ECR = 1ul << (type)
#define get_iexcept() IERR
#define set_iexcept(mask) IERR = (mask)
/*
* exception types
*/
#define EXCEPT_TYPE_NXF 31 /* NMI */
#define EXCEPT_TYPE_EXC 30 /* external exception */
#define EXCEPT_TYPE_IXF 1 /* internal exception */
#define EXCEPT_TYPE_SXF 0 /* software exception */
#define EXCEPT_CAUSE_LBX (1 << 7) /* loop buffer exception */
#define EXCEPT_CAUSE_PRX (1 << 6) /* privilege exception */
#define EXCEPT_CAUSE_RAX (1 << 5) /* resource access exception */
#define EXCEPT_CAUSE_RCX (1 << 4) /* resource conflict exception */
#define EXCEPT_CAUSE_OPX (1 << 3) /* opcode exception */
#define EXCEPT_CAUSE_EPX (1 << 2) /* execute packet exception */
#define EXCEPT_CAUSE_FPX (1 << 1) /* fetch packet exception */
#define EXCEPT_CAUSE_IFX (1 << 0) /* instruction fetch exception */
enum SYSTEM_TRAP_CODE
{
ABORT_BUS_ADDRERR = 0, // bus address error
ABORT_BUS_ACCERR, // bus access permission error
ABORT_OPCODE_ILL, // illegal opcode
ABORT_PRVREG_ILL, // privilege register
ABORT_PRVOPC_ILL, // privileged opcode
ABORT_ILLTRP_ILL, // illegal trap
ABORT_BRKPT_ILL, // handling breakpoints
};
/*
* abort types
*/
#define ABORT_TYPE_BUS 0 // bus access abnormal
#define ABORT_TYPE_MAP 1 // page table mapping error
#define ABORT_TYPE_UNDDEF 0xff // undefined exception
#define ABORT_TYPE_FATAL 0xffffffff // fatal error
struct rt_exception_info {
char *kernel_str;
int type;
int code;
};
#define BKPT_OPCODE 0x56454314 /* illegal opcode */
#define INTC_MEXPMASK __SYSREGA(0x018000e0, unsigned int)
extern void rt_trap_init(void);
extern void rt_hw_enable_exception(void);
extern int __fls(int val);
extern int __ffs(int val);
/*
* ffz - find first zero in word.
* @word: The word to search
*
* Undefined if no zero exists, so code should check against ~0UL first.
*/
#define ffz(x) __ffs(~(x))
/**
* fls - find last (most-significant) bit set
* @x: the word to search
*
* This is defined the same way as ffs.
* Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.
*/
static inline int fls(int x)
{
if (!x)
{
return 0;
}
return 32 - __fls(x);
}
/**
* ffs - find first bit set
* @x: the word to search
*
* This is defined the same way as
* the libc and compiler builtin ffs routines, therefore
* differs in spirit from the above ffz (man ffs).
* Note ffs(0) = 0, ffs(1) = 1, ffs(0x80000000) = 32.
*/
static inline int ffs(int x)
{
if (!x)
{
return 0;
}
return __ffs(x) + 1;
}
#endif /* __TRAP_H__ */

95
libcpu/ti-dsp/c6x/vector.asm Normal file
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@ -0,0 +1,95 @@
;
; Copyright (c) 2021, Shenzhen Academy of Aerospace Technology
;
; SPDX-License-Identifier: Apache-2.0
;
; Change Logs:
; Date Author Notes
; 2021-11-16 Dystopia the first version
;
;-----------------------------------------------------------
; interrupt vector table for C6000 DSP
;-----------------------------------------------------------
;-----------------------------------------------------------
; extern function
;-----------------------------------------------------------
.ref _c_int00 ; entry point
.ref _nmi_handler
.ref _bad_handler
.ref _int4_handler
.ref _int5_handler
.ref _int6_handler
.ref _int7_handler
.ref _int8_handler
.ref _int9_handler
.ref _int10_handler
.ref _int11_handler
.ref _int12_handler
.ref _int13_handler
.ref _int14_handler
.ref _int15_handler
;-----------------------------------------------------------
; macro definition
;-----------------------------------------------------------
;
; create interrupt vector for reset (interrupt 0)
;
VEC_RESET .macro addr
MVKL addr,B0
MVKH addr,B0
B B0
MVC PCE1,B0
NOP 4
.align 32
.endm
;
; create interrupt vector for other used interrupts
;
IRQVEC .macro __name, __isr
.align 32
.hidden __name
.global __name
__name:
B .S2 __isr
NOP
NOP
NOP
NOP
NOP
NOP
NOP
.endm
;
;-----------------------------------------------------------
;
;
; vector table
;
.sect ".vecs"
.align 32
.global vector
vector:
VEC_RESET _c_int00
IRQVEC NMI, _nmi_handler
IRQVEC AINT, _bad_handler
IRQVEC MSGINT, _bad_handler
IRQVEC INT4, _int4_handler
IRQVEC INT5, _int5_handler
IRQVEC INT6, _int6_handler
IRQVEC INT7, _int7_handler
IRQVEC INT8, _int8_handler
IRQVEC INT9, _int9_handler
IRQVEC INT10, _int10_handler
IRQVEC INT11, _int11_handler
IRQVEC INT12, _int12_handler
IRQVEC INT13, _int13_handler
IRQVEC INT14, _int14_handler
IRQVEC INT15, _int15_handler
.end