添加TMS320C6678处理器，keystone架构底层代码

bsp/ti-c6678/.ccsproject

+<?xml version="1.0" encoding="UTF-8" ?>
+<?ccsproject version="1.0"?>
+<projectOptions>
+	<deviceVariant value="TMS320C66XX.TMS320C6678"/>
+	<deviceFamily value="C6000"/>
+	<deviceEndianness value="little"/>
+	<codegenToolVersion value="8.3.5"/>
+	<isElfFormat value="true"/>
+	<rts value="libc.a"/>
+	<templateProperties value="id=com.ti.common.project.core.emptyProjectTemplate,"/>
+	<isTargetManual value="false"/>
+</projectOptions>

bsp/ti-c6678/.project

+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>ti-c6678</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.cdt.managedbuilder.core.genmakebuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.cdt.managedbuilder.core.ScannerConfigBuilder</name>
+			<triggers>full,incremental,</triggers>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>com.ti.ccstudio.core.ccsNature</nature>
+		<nature>org.eclipse.cdt.core.cnature</nature>
+		<nature>org.eclipse.cdt.managedbuilder.core.managedBuildNature</nature>
+		<nature>org.eclipse.cdt.core.ccnature</nature>
+		<nature>org.eclipse.cdt.managedbuilder.core.ScannerConfigNature</nature>
+	</natures>
+	<linkedResources>
+		<link>
+			<name>SConscript</name>
+			<type>1</type>
+			<locationURI>PARENT-2-PROJECT_LOC/src/SConscript</locationURI>
+		</link>
+		<link>
+			<name>clock.c</name>
+			<type>1</type>
+			<locationURI>PARENT-2-PROJECT_LOC/src/clock.c</locationURI>
+		</link>
+		<link>
+			<name>components.c</name>
+			<type>1</type>
+			<locationURI>PARENT-2-PROJECT_LOC/src/components.c</locationURI>
+		</link>
+		<link>
+			<name>context.asm</name>
+			<type>1</type>
+			<locationURI>PARENT-2-PROJECT_LOC/libcpu/ti-dsp/c6x/context.asm</locationURI>
+		</link>
+		<link>
+			<name>cpu.c</name>
+			<type>1</type>
+			<locationURI>PARENT-2-PROJECT_LOC/src/cpu.c</locationURI>
+		</link>
+		<link>
+			<name>cpuport.c</name>
+			<type>1</type>
+			<locationURI>PARENT-2-PROJECT_LOC/libcpu/ti-dsp/c6x/cpuport.c</locationURI>
+		</link>
+		<link>
+			<name>device.c</name>
+			<type>1</type>
+			<locationURI>PARENT-2-PROJECT_LOC/src/device.c</locationURI>
+		</link>
+		<link>
+			<name>idle.c</name>
+			<type>1</type>
+			<locationURI>PARENT-2-PROJECT_LOC/src/idle.c</locationURI>
+		</link>
+		<link>
+			<name>inct.asm</name>
+			<type>1</type>
+			<locationURI>PARENT-2-PROJECT_LOC/libcpu/ti-dsp/c6x/inct.asm</locationURI>
+		</link>
+		<link>
+			<name>interrupt.c</name>
+			<type>1</type>
+			<locationURI>PARENT-2-PROJECT_LOC/libcpu/ti-dsp/c6x/interrupt.c</locationURI>
+		</link>
+		<link>
+			<name>ipc.c</name>
+			<type>1</type>
+			<locationURI>PARENT-2-PROJECT_LOC/src/ipc.c</locationURI>
+		</link>
+		<link>
+			<name>irq.c</name>
+			<type>1</type>
+			<locationURI>PARENT-2-PROJECT_LOC/src/irq.c</locationURI>
+		</link>
+		<link>
+			<name>kservice.c</name>
+			<type>1</type>
+			<locationURI>PARENT-2-PROJECT_LOC/src/kservice.c</locationURI>
+		</link>
+		<link>
+			<name>mem.c</name>
+			<type>1</type>
+			<locationURI>PARENT-2-PROJECT_LOC/src/mem.c</locationURI>
+		</link>
+		<link>
+			<name>memheap.c</name>
+			<type>1</type>
+			<locationURI>PARENT-2-PROJECT_LOC/src/memheap.c</locationURI>
+		</link>
+		<link>
+			<name>mempool.c</name>
+			<type>1</type>
+			<locationURI>PARENT-2-PROJECT_LOC/src/mempool.c</locationURI>
+		</link>
+		<link>
+			<name>object.c</name>
+			<type>1</type>
+			<locationURI>PARENT-2-PROJECT_LOC/src/object.c</locationURI>
+		</link>
+		<link>
+			<name>scheduler.c</name>
+			<type>1</type>
+			<locationURI>PARENT-2-PROJECT_LOC/src/scheduler.c</locationURI>
+		</link>
+		<link>
+			<name>signal.c</name>
+			<type>1</type>
+			<locationURI>PARENT-2-PROJECT_LOC/src/signal.c</locationURI>
+		</link>
+		<link>
+			<name>slab.c</name>
+			<type>1</type>
+			<locationURI>PARENT-2-PROJECT_LOC/src/slab.c</locationURI>
+		</link>
+		<link>
+			<name>stack.asm</name>
+			<type>1</type>
+			<locationURI>PARENT-2-PROJECT_LOC/libcpu/ti-dsp/c6x/stack.asm</locationURI>
+		</link>
+		<link>
+			<name>thread.c</name>
+			<type>1</type>
+			<locationURI>PARENT-2-PROJECT_LOC/src/thread.c</locationURI>
+		</link>
+		<link>
+			<name>timer.c</name>
+			<type>1</type>
+			<locationURI>PARENT-2-PROJECT_LOC/src/timer.c</locationURI>
+		</link>
+		<link>
+			<name>trap.c</name>
+			<type>1</type>
+			<locationURI>PARENT-2-PROJECT_LOC/libcpu/ti-dsp/c6x/trap.c</locationURI>
+		</link>
+		<link>
+			<name>vector.asm</name>
+			<type>1</type>
+			<locationURI>PARENT-2-PROJECT_LOC/libcpu/ti-dsp/c6x/vector.asm</locationURI>
+		</link>
+	</linkedResources>
+</projectDescription>

bsp/ti-c6678/.settings/org.eclipse.cdt.codan.core.prefs

+eclipse.preferences.version=1
+inEditor=false
+onBuild=false

bsp/ti-c6678/.settings/org.eclipse.cdt.debug.core.prefs

+eclipse.preferences.version=1
+org.eclipse.cdt.debug.core.toggleBreakpointModel=com.ti.ccstudio.debug.CCSBreakpointMarker

bsp/ti-c6678/.settings/org.eclipse.core.resources.prefs

+eclipse.preferences.version=1
+encoding//Debug/applications/subdir_rules.mk=UTF-8
+encoding//Debug/applications/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

bsp/ti-c6678/KeyStone.cmd

+/****************************************************************************/
+/*                                                                          */
+/*                               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
+}

bsp/ti-c6678/applications/board.c

+/*
+ * 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 "trap.h"
+#include "interrupt.h"
+#include "drv_timer.h"
+#include "KeyStone_common.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();
+}
+
+/**
+ * This function will initial board.
+ */
+void rt_hw_board_init(void)
+{
+	// initial CPU core
+	KeyStone_common_CPU_init();
+
+	// initial interrupt controller
+	rt_hw_interrupt_init();
+
+	// initial system trap
+	rt_trap_init();
+
+	// initial system timer
+    hw_system_timer_init();
+
+#ifdef RT_USING_HEAP
+    /* 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);
+#endif
+    // ......
+
+    hw_system_timer_start();
+}
+

bsp/ti-c6678/applications/board.h

+/*
+ * 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__ */
+

bsp/ti-c6678/applications/main.c

+/*
+ * 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)
+{
+
+    while(1)
+    {
+        rt_thread_sleep(10);
+    }
+}
+
+void rt_my_thread_entry(void *parameter)
+{
+    while(1)
+    {
+        rt_thread_sleep(20);
+    }
+}
+
+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;
+    }
+    /******************************************************************/
+    tid = rt_thread_create("mythread", rt_my_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 ( ; ; );
+}
+

bsp/ti-c6678/driver/drv_timer.c

+/*
+ * 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 "KeyStone_common.h"
+
+#include <rthw.h>
+#include <rtthread.h>
+
+/**
+ *  @b Description
+ *  @n
+ *      The function initial system timer.
+ * 		Use local timer (==DNUM of a core) to generate a clock on TIMO0,interrupts are generated as well
+ *
+ *  @param[]
+ *
+ *  @retval
+ *		NULL
+ */
+void hw_system_timer_init(void)
+{
+	// initial system timer interrupt
+    // map local timer interrupt to INT14
+    gpCGEM_regs->INTMUX3 = (CSL_GEM_TINTLN<<CSL_CGEM_INTMUX3_INTSEL14_SHIFT);
+    // enable INT14
+    CPU_interrupt_enable(1<<14);
+
+    return ;
+}
+
+void hw_system_timer_start(void)
+{
+    Timer64_Config tmrCfg;
+
+    //select output on TIMO0 from local timer.
+    gpBootCfgRegs->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*gDSP_Core_Speed_Hz/6000;
+    tmrCfg.reload_period= 0; //not used for this case
+
+    // initial timer
+    Timer64_Init(&tmrCfg);
+}
+

bsp/ti-c6678/driver/drv_timer.h

+/*
+ * 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__
+
+void hw_system_timer_init(void);
+
+void hw_system_timer_start(void);
+
+#endif	/* __SYS_TIMER_H__ */
+