From d0ef322b13071242d70021c8b634bacde7d15653 Mon Sep 17 00:00:00 2001
From: Richard Barry <ribarry@amazon.com>
Date: Sat, 24 Nov 2018 04:42:20 +0000
Subject: [PATCH] Add kernel code to the RISC-V-Qemu-sifive_e-FreedomStudio
 demo.

---
 .../.cproject                                 |   5 +-
 .../.project                                  |  73 +++++++++
 .../.settings/language.settings.xml           |   2 +-
 .../FreeRTOSConfig.h                          | 150 ++++++++++++++++++
 .../RISC-V-Qemu-sifive_e-FreedomStudio/main.c |  68 ++++++++
 5 files changed, 296 insertions(+), 2 deletions(-)
 create mode 100644 FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/FreeRTOSConfig.h

diff --git a/FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/.cproject b/FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/.cproject
index 02479366e..a9424634c 100644
--- a/FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/.cproject
+++ b/FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/.cproject
@@ -45,7 +45,7 @@
 							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.target.codemodel.93793405" name="Code model" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.target.codemodel" useByScannerDiscovery="false" value="ilg.gnumcueclipse.managedbuild.cross.riscv.option.target.codemodel.any" valueType="enumerated"/>
 							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.toolchain.id.1107449554" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.toolchain.id" useByScannerDiscovery="false" value="-2032619395" valueType="string"/>
 							<targetPlatform archList="all" binaryParser="org.eclipse.cdt.core.ELF" id="ilg.gnumcueclipse.managedbuild.cross.riscv.targetPlatform.1301923652" isAbstract="false" osList="all" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.targetPlatform"/>
-							<builder buildPath="${workspace_loc:/RTOSDemo}/Debug" id="ilg.gnumcueclipse.managedbuild.cross.riscv.builder.1496635672" keepEnvironmentInBuildfile="false" managedBuildOn="true" name="Gnu Make Builder" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.builder"/>
+							<builder buildPath="${workspace_loc:/RTOSDemo}/Debug" id="ilg.gnumcueclipse.managedbuild.cross.riscv.builder.1496635672" keepEnvironmentInBuildfile="false" managedBuildOn="true" name="Gnu Make Builder" parallelBuildOn="true" parallelizationNumber="optimal" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.builder"/>
 							<tool id="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.assembler.1472778604" name="GNU RISC-V Cross Assembler" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.assembler">
 								<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.assembler.usepreprocessor.874608690" name="Use preprocessor" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.assembler.usepreprocessor" useByScannerDiscovery="false" value="true" valueType="boolean"/>
 								<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.assembler.include.paths.545620458" name="Include paths (-I)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.assembler.include.paths" useByScannerDiscovery="true" valueType="includePath">
@@ -59,7 +59,10 @@
 							</tool>
 							<tool id="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.c.compiler.1632260763" name="GNU RISC-V Cross C Compiler" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.c.compiler">
 								<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.c.compiler.include.paths.1464742435" name="Include paths (-I)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.c.compiler.include.paths" useByScannerDiscovery="true" valueType="includePath">
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/FreeRTOS_Source/include}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/freedom-e-sdk/drivers}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/FreeRTOS_Source/portable/GCC/RISC-V-RV32}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/freedom-e-sdk/env}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/freedom-e-sdk/env/freedom-e300-hifive1}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/freedom-e-sdk/include}&quot;"/>
diff --git a/FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/.project b/FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/.project
index 1ee79134e..b83209ea4 100644
--- a/FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/.project
+++ b/FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/.project
@@ -23,4 +23,77 @@
 		<nature>org.eclipse.cdt.managedbuilder.core.managedBuildNature</nature>
 		<nature>org.eclipse.cdt.managedbuilder.core.ScannerConfigNature</nature>
 	</natures>
+	<linkedResources>
+		<link>
+			<name>FreeRTOS_Source</name>
+			<type>2</type>
+			<locationURI>virtual:/virtual</locationURI>
+		</link>
+		<link>
+			<name>FreeRTOS_Source/event_groups.c</name>
+			<type>1</type>
+			<locationURI>FREERTOS_ROUTE/FreeRTOS/Source/event_groups.c</locationURI>
+		</link>
+		<link>
+			<name>FreeRTOS_Source/include</name>
+			<type>2</type>
+			<locationURI>FREERTOS_ROUTE/FreeRTOS/Source/include</locationURI>
+		</link>
+		<link>
+			<name>FreeRTOS_Source/list.c</name>
+			<type>1</type>
+			<locationURI>FREERTOS_ROUTE/FreeRTOS/Source/list.c</locationURI>
+		</link>
+		<link>
+			<name>FreeRTOS_Source/portable</name>
+			<type>2</type>
+			<locationURI>virtual:/virtual</locationURI>
+		</link>
+		<link>
+			<name>FreeRTOS_Source/queue.c</name>
+			<type>1</type>
+			<locationURI>FREERTOS_ROUTE/FreeRTOS/Source/queue.c</locationURI>
+		</link>
+		<link>
+			<name>FreeRTOS_Source/stream_buffer.c</name>
+			<type>1</type>
+			<locationURI>FREERTOS_ROUTE/FreeRTOS/Source/stream_buffer.c</locationURI>
+		</link>
+		<link>
+			<name>FreeRTOS_Source/tasks.c</name>
+			<type>1</type>
+			<locationURI>FREERTOS_ROUTE/FreeRTOS/Source/tasks.c</locationURI>
+		</link>
+		<link>
+			<name>FreeRTOS_Source/timers.c</name>
+			<type>1</type>
+			<locationURI>FREERTOS_ROUTE/FreeRTOS/Source/timers.c</locationURI>
+		</link>
+		<link>
+			<name>FreeRTOS_Source/portable/GCC</name>
+			<type>2</type>
+			<locationURI>virtual:/virtual</locationURI>
+		</link>
+		<link>
+			<name>FreeRTOS_Source/portable/MemMang</name>
+			<type>2</type>
+			<locationURI>virtual:/virtual</locationURI>
+		</link>
+		<link>
+			<name>FreeRTOS_Source/portable/GCC/RISC-V-RV32</name>
+			<type>2</type>
+			<locationURI>FREERTOS_ROUTE/FreeRTOS/Source/portable/GCC/RISC-V-RV32</locationURI>
+		</link>
+		<link>
+			<name>FreeRTOS_Source/portable/MemMang/heap_4.c</name>
+			<type>1</type>
+			<locationURI>FREERTOS_ROUTE/FreeRTOS/Source/portable/MemMang/heap_4.c</locationURI>
+		</link>
+	</linkedResources>
+	<variableList>
+		<variable>
+			<name>FREERTOS_ROUTE</name>
+			<value>$%7BPARENT-3-PROJECT_LOC%7D</value>
+		</variable>
+	</variableList>
 </projectDescription>
diff --git a/FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/.settings/language.settings.xml b/FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/.settings/language.settings.xml
index df1c05bab..ba62fc5d6 100644
--- a/FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/.settings/language.settings.xml
+++ b/FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/.settings/language.settings.xml
@@ -5,7 +5,7 @@
 			<provider copy-of="extension" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider"/>
 			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
 			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
-			<provider class="org.eclipse.cdt.managedbuilder.language.settings.providers.GCCBuiltinSpecsDetector" console="false" env-hash="1866420524446515374" id="ilg.gnumcueclipse.managedbuild.cross.riscv.GCCBuiltinSpecsDetector" keep-relative-paths="false" name="CDT RISC-V Cross GCC Built-in Compiler Settings" parameter="${COMMAND} ${FLAGS} ${cross_toolchain_flags} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
+			<provider class="org.eclipse.cdt.managedbuilder.language.settings.providers.GCCBuiltinSpecsDetector" console="false" env-hash="1914048489906665533" id="ilg.gnumcueclipse.managedbuild.cross.riscv.GCCBuiltinSpecsDetector" keep-relative-paths="false" name="CDT RISC-V Cross GCC Built-in Compiler Settings" parameter="${COMMAND} ${FLAGS} ${cross_toolchain_flags} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
 				<language-scope id="org.eclipse.cdt.core.gcc"/>
 				<language-scope id="org.eclipse.cdt.core.g++"/>
 			</provider>
diff --git a/FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/FreeRTOSConfig.h b/FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/FreeRTOSConfig.h
new file mode 100644
index 000000000..74858e462
--- /dev/null
+++ b/FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/FreeRTOSConfig.h
@@ -0,0 +1,150 @@
+/*
+    FreeRTOS V8.2.3 - Copyright (C) 2015 Real Time Engineers Ltd.
+    All rights reserved
+
+    VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
+
+    This file is part of the FreeRTOS distribution.
+
+    FreeRTOS is free software; you can redistribute it and/or modify it under
+    the terms of the GNU General Public License (version 2) as published by the
+    Free Software Foundation >>>> AND MODIFIED BY <<<< the FreeRTOS exception.
+
+    ***************************************************************************
+    >>!   NOTE: The modification to the GPL is included to allow you to     !<<
+    >>!   distribute a combined work that includes FreeRTOS without being   !<<
+    >>!   obliged to provide the source code for proprietary components     !<<
+    >>!   outside of the FreeRTOS kernel.                                   !<<
+    ***************************************************************************
+
+    FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
+    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+    FOR A PARTICULAR PURPOSE.  Full license text is available on the following
+    link: http://www.freertos.org/a00114.html
+
+    ***************************************************************************
+     *                                                                       *
+     *    FreeRTOS provides completely free yet professionally developed,    *
+     *    robust, strictly quality controlled, supported, and cross          *
+     *    platform software that is more than just the market leader, it     *
+     *    is the industry's de facto standard.                               *
+     *                                                                       *
+     *    Help yourself get started quickly while simultaneously helping     *
+     *    to support the FreeRTOS project by purchasing a FreeRTOS           *
+     *    tutorial book, reference manual, or both:                          *
+     *    http://www.FreeRTOS.org/Documentation                              *
+     *                                                                       *
+    ***************************************************************************
+
+    http://www.FreeRTOS.org/FAQHelp.html - Having a problem?  Start by reading
+    the FAQ page "My application does not run, what could be wrong?".  Have you
+    defined configASSERT()?
+
+    http://www.FreeRTOS.org/support - In return for receiving this top quality
+    embedded software for free we request you assist our global community by
+    participating in the support forum.
+
+    http://www.FreeRTOS.org/training - Investing in training allows your team to
+    be as productive as possible as early as possible.  Now you can receive
+    FreeRTOS training directly from Richard Barry, CEO of Real Time Engineers
+    Ltd, and the world's leading authority on the world's leading RTOS.
+
+    http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
+    including FreeRTOS+Trace - an indispensable productivity tool, a DOS
+    compatible FAT file system, and our tiny thread aware UDP/IP stack.
+
+    http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.
+    Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.
+
+    http://www.OpenRTOS.com - Real Time Engineers ltd. license FreeRTOS to High
+    Integrity Systems ltd. to sell under the OpenRTOS brand.  Low cost OpenRTOS
+    licenses offer ticketed support, indemnification and commercial middleware.
+
+    http://www.SafeRTOS.com - High Integrity Systems also provide a safety
+    engineered and independently SIL3 certified version for use in safety and
+    mission critical applications that require provable dependability.
+
+    1 tab == 4 spaces!
+*/
+
+
+#ifndef FREERTOS_CONFIG_H
+#define FREERTOS_CONFIG_H
+
+
+/*-----------------------------------------------------------
+ * Application specific definitions.
+ *
+ * These definitions should be adjusted for your particular hardware and
+ * application requirements.
+ *
+ * THESE PARAMETERS ARE DESCRIBED WITHIN THE 'CONFIGURATION' SECTION OF THE
+ * FreeRTOS API DOCUMENTATION AVAILABLE ON THE FreeRTOS.org WEB SITE.
+ *
+ * See http://www.freertos.org/a00110.html.
+ *----------------------------------------------------------*/
+
+#define configCTRL_BASE					0x2000000
+#define configUSE_PREEMPTION			1
+#define configUSE_IDLE_HOOK				0
+#define configUSE_TICK_HOOK				0
+#define configCPU_CLOCK_HZ				( 10000000 ) /*QEMU*/
+#define configTICK_RATE_HZ				( ( TickType_t ) 1000 )
+#define configMAX_PRIORITIES			( 5 )
+#define configMINIMAL_STACK_SIZE		( ( unsigned short ) 512 )
+#define configTOTAL_HEAP_SIZE			( ( size_t ) ( 10 * 1024 ) )
+#define configMAX_TASK_NAME_LEN			( 16 )
+#define configUSE_TRACE_FACILITY		1
+#define configUSE_16_BIT_TICKS			0
+#define configIDLE_SHOULD_YIELD			0
+#define configUSE_MUTEXES				1
+#define configQUEUE_REGISTRY_SIZE		8
+#define configCHECK_FOR_STACK_OVERFLOW	2
+#define configUSE_RECURSIVE_MUTEXES		1
+#define configUSE_MALLOC_FAILED_HOOK	1
+#define configUSE_APPLICATION_TASK_TAG	0
+#define configUSE_COUNTING_SEMAPHORES	1
+#define configGENERATE_RUN_TIME_STATS	0
+
+/* Co-routine definitions. */
+#define configUSE_CO_ROUTINES 			0
+#define configMAX_CO_ROUTINE_PRIORITIES ( 2 )
+
+/* Software timer definitions. */
+#define configUSE_TIMERS				0
+#define configTIMER_TASK_PRIORITY		( 2 )
+#define configTIMER_QUEUE_LENGTH		2
+#define configTIMER_TASK_STACK_DEPTH	( configMINIMAL_STACK_SIZE )
+
+/* Task priorities.  Allow these to be overridden. */
+#ifndef uartPRIMARY_PRIORITY
+	#define uartPRIMARY_PRIORITY		( configMAX_PRIORITIES - 3 )
+#endif
+
+/* Set the following definitions to 1 to include the API function, or zero
+to exclude the API function. */
+#define INCLUDE_vTaskPrioritySet		1
+#define INCLUDE_uxTaskPriorityGet		1
+#define INCLUDE_vTaskDelete				1
+#define INCLUDE_vTaskCleanUpResources	1
+#define INCLUDE_vTaskSuspend			1
+#define INCLUDE_vTaskDelayUntil			1
+#define INCLUDE_vTaskDelay				1
+#define INCLUDE_eTaskGetState			1
+
+/* Normal assert() semantics without relying on the provision of an assert.h
+header file. */
+#define configASSERT( x ) if( ( x ) == 0 ) { taskDISABLE_INTERRUPTS(); for( ;; ); }
+
+/* Definitions that map the FreeRTOS port interrupt handlers to their CMSIS
+standard names - or at least those used in the unmodified vector table. */
+//#define vPortSVCHandler SVCall_Handler
+//#define xPortPendSVHandler PendSV_Handler
+//#define vPortSysTickHandler SysTick_Handler
+
+extern void vApplicationMallocFailedHook();
+
+
+extern void vUARTWriteString( const char * const pcString );
+
+#endif /* FREERTOS_CONFIG_H */
diff --git a/FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/main.c b/FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/main.c
index af6c97fe8..649218528 100644
--- a/FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/main.c
+++ b/FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/main.c
@@ -1,5 +1,8 @@
 // See LICENSE for license details.
 
+#include <FreeRTOS.h>
+#include <task.h>
+
 #include <stdio.h>
 #include <stdlib.h>
 #include "platform.h"
@@ -9,6 +12,24 @@
 #include <unistd.h>
 #include "stdatomic.h"
 
+
+
+/*
+ * FreeRTOS hook for when malloc fails, enable in FreeRTOSConfig.
+ */
+void vApplicationMallocFailedHook( void );
+
+/*
+ * FreeRTOS hook for when FreeRtos is idling, enable in FreeRTOSConfig.
+ */
+void vApplicationIdleHook( void );
+
+/*
+ * FreeRTOS hook for when a stack overflow occurs, enable in FreeRTOSConfig.
+ */
+void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName );
+
+
 void reset_demo (void);
 
 // Structures for registering different interrupt handlers
@@ -251,8 +272,55 @@ int main(int argc, char **argv)
 
 }
 
+void vApplicationMallocFailedHook( void )
+{
+	/* vApplicationMallocFailedHook() will only be called if
+	configUSE_MALLOC_FAILED_HOOK is set to 1 in FreeRTOSConfig.h.  It is a hook
+	function that will get called if a call to pvPortMalloc() fails.
+	pvPortMalloc() is called internally by the kernel whenever a task, queue,
+	timer or semaphore is created.  It is also called by various parts of the
+	demo application.  If heap_1.c or heap_2.c are used, then the size of the
+	heap available to pvPortMalloc() is defined by configTOTAL_HEAP_SIZE in
+	FreeRTOSConfig.h, and the xPortGetFreeHeapSize() API function can be used
+	to query the size of free heap space that remains (although it does not
+	provide information on how the remaining heap might be fragmented). */
+	taskDISABLE_INTERRUPTS();
+	for( ;; );
+}
+/*-----------------------------------------------------------*/
+
+void vApplicationIdleHook( void )
+{
+	/* vApplicationIdleHook() will only be called if configUSE_IDLE_HOOK is set
+	to 1 in FreeRTOSConfig.h.  It will be called on each iteration of the idle
+	task.  It is essential that code added to this hook function never attempts
+	to block in any way (for example, call xQueueReceive() with a block time
+	specified, or call vTaskDelay()).  If the application makes use of the
+	vTaskDelete() API function (as this demo application does) then it is also
+	important that vApplicationIdleHook() is permitted to return to its calling
+	function, because it is the responsibility of the idle task to clean up
+	memory allocated by the kernel to any task that has since been deleted. */
+}
+/*-----------------------------------------------------------*/
+
+void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName )
+{
+	( void ) pcTaskName;
+	( void ) pxTask;
+
+	/* Run time stack overflow checking is performed if
+	configCHECK_FOR_STACK_OVERFLOW is defined to 1 or 2.  This hook
+	function is called if a stack overflow is detected. */
+	taskDISABLE_INTERRUPTS();
+	for( ;; );
+}
+/*-----------------------------------------------------------*/
+
+
 
 void trap_entry( void )
 {
 #warning Dummy until kernel code is incldued.
 }
+
+