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First task running in RISC-V-Qemu-sifive_e-FreedomStudio demo.

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This commit is contained in:
Richard Barry 2018-11-24 20:59:07 +00:00
parent d0ef322b13
commit dc99300fa9
11 changed files with 422 additions and 277 deletions
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2
FreeRTOS/Demo/CORTEX_MPU_CEC_MEC_17xx_51xx_Keil_GCC/main.c
View file

@ -1021,7 +1021,7 @@ void vApplicationMallocFailedHook( void )
} }
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
static void prvTimerCallback( TaskHandle_t xExpiredTimer ) static void prvTimerCallback( TimerHandle_t xExpiredTimer )
{ {
uint32_t ulCount; uint32_t ulCount;

18
FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/.cproject
View file

@ -20,7 +20,7 @@
<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.addtools.createflash.8320194" name="Create flash image" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.addtools.createflash" useByScannerDiscovery="false" value="true" valueType="boolean"/> <option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.addtools.createflash.8320194" name="Create flash image" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.addtools.createflash" useByScannerDiscovery="false" value="true" valueType="boolean"/>
<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.addtools.createlisting.379436257" name="Create extended listing" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.addtools.createlisting" useByScannerDiscovery="false"/> <option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.addtools.createlisting.379436257" name="Create extended listing" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.addtools.createlisting" useByScannerDiscovery="false"/>
<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.addtools.printsize.1043841176" name="Print size" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.addtools.printsize" useByScannerDiscovery="false" value="true" valueType="boolean"/> <option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.addtools.printsize.1043841176" name="Print size" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.addtools.printsize" useByScannerDiscovery="false" value="true" valueType="boolean"/>
<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.level.383399415" name="Optimization Level" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.level" useByScannerDiscovery="true" value="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.level.more" valueType="enumerated"/> <option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.level.383399415" name="Optimization Level" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.level" useByScannerDiscovery="true" value="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.level.none" valueType="enumerated"/>
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<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.signedchar.119459497" name="'char' is signed (-fsigned-char)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.signedchar" useByScannerDiscovery="true" value="false" valueType="boolean"/> <option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.signedchar.119459497" name="'char' is signed (-fsigned-char)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.signedchar" useByScannerDiscovery="true" value="false" valueType="boolean"/>
<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.functionsections.735578493" name="Function sections (-ffunction-sections)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.functionsections" useByScannerDiscovery="true" value="false" valueType="boolean"/> <option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.functionsections.735578493" name="Function sections (-ffunction-sections)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.functionsections" useByScannerDiscovery="true" value="false" valueType="boolean"/>
@ -49,10 +49,10 @@
<tool id="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.assembler.1472778604" name="GNU RISC-V Cross Assembler" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.assembler"> <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.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"> <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">
<listOptionValue builtIn="false" value="../../../../bsp/env"/> <listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/freedom-e-sdk/env}&quot;"/>
<listOptionValue builtIn="false" value="../../../../bsp/include"/> <listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/freedom-e-sdk/include}&quot;"/>
<listOptionValue builtIn="false" value="../../../../bsp/env/freedom-e300-hifive1"/> <listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/freedom-e-sdk/env/freedom-e300-hifive1}&quot;"/>
<listOptionValue builtIn="false" value="../../../../bsp/drivers"/> <listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/freedom-e-sdk/drivers}&quot;"/>
</option> </option>
<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.assembler.other.855588508" name="Other assembler flags" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.assembler.other" useByScannerDiscovery="false" value="-c" valueType="string"/> <option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.assembler.other.855588508" name="Other assembler flags" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.assembler.other" useByScannerDiscovery="false" value="-c" valueType="string"/>
<inputType id="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.assembler.input.1208356864" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.assembler.input"/> <inputType id="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.assembler.input.1208356864" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.assembler.input"/>
@ -68,10 +68,12 @@
<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/freedom-e-sdk/include}&quot;"/> <listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/freedom-e-sdk/include}&quot;"/>
</option> </option>
<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.c.compiler.defs.1115817835" name="Defined symbols (-D)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.c.compiler.defs" useByScannerDiscovery="true" valueType="definedSymbols"> <option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.c.compiler.defs.1115817835" name="Defined symbols (-D)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.c.compiler.defs" useByScannerDiscovery="true" valueType="definedSymbols">
<listOptionValue builtIn="false" value="USE_PLIC"/> <listOptionValue builtIn="false" value="DONT_USE_PLIC"/>
<listOptionValue builtIn="false" value="USE_M_TIME"/> <listOptionValue builtIn="false" value="DONT_USE_M_TIME"/>
</option> </option>
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<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.c.compiler.std.1963706020" name="Language standard" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.c.compiler.std" useByScannerDiscovery="true" value="ilg.gnumcueclipse.managedbuild.cross.riscv.option.c.compiler.std.default" valueType="enumerated"/>
<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.c.compiler.otheroptimizations.1382786252" name="Other optimization flags" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.c.compiler.otheroptimizations" useByScannerDiscovery="true" value="" valueType="string"/>
<inputType id="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.c.compiler.input.517786622" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.c.compiler.input"/> <inputType id="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.c.compiler.input.517786622" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.c.compiler.input"/>
</tool> </tool>
<tool id="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.cpp.compiler.890064572" name="GNU RISC-V Cross C++ Compiler" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.cpp.compiler"/> <tool id="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.cpp.compiler.890064572" name="GNU RISC-V Cross C++ Compiler" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.cpp.compiler"/>
@ -112,7 +114,7 @@
</toolChain> </toolChain>
</folderInfo> </folderInfo>
<sourceEntries> <sourceEntries>
<entry excluding="freedom-e-sdk/env/entry.S" flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name=""/> <entry flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name=""/>
</sourceEntries> </sourceEntries>
</configuration> </configuration>
</storageModule> </storageModule>

2
FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/.settings/language.settings.xml
View file

@ -5,7 +5,7 @@
<provider copy-of="extension" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider"/> <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.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" 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="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"> <provider class="org.eclipse.cdt.managedbuilder.language.settings.providers.GCCBuiltinSpecsDetector" console="false" env-hash="1967898482140670668" 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.gcc"/>
<language-scope id="org.eclipse.cdt.core.g++"/> <language-scope id="org.eclipse.cdt.core.g++"/>
</provider> </provider>

5
FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/FreeRTOSConfig.h
View file

@ -71,6 +71,7 @@
#ifndef FREERTOS_CONFIG_H #ifndef FREERTOS_CONFIG_H
#define FREERTOS_CONFIG_H #define FREERTOS_CONFIG_H
#include "platform.h"
/*----------------------------------------------------------- /*-----------------------------------------------------------
* Application specific definitions. * Application specific definitions.
@ -84,7 +85,7 @@
* See http://www.freertos.org/a00110.html. * See http://www.freertos.org/a00110.html.
*----------------------------------------------------------*/ *----------------------------------------------------------*/
#define configCTRL_BASE 0x2000000 #define configCLINT_BASE_ADDRESS CLINT_CTRL_ADDR
#define configUSE_PREEMPTION 1 #define configUSE_PREEMPTION 1
#define configUSE_IDLE_HOOK 0 #define configUSE_IDLE_HOOK 0
#define configUSE_TICK_HOOK 0 #define configUSE_TICK_HOOK 0
@ -92,7 +93,7 @@
#define configTICK_RATE_HZ ( ( TickType_t ) 1000 ) #define configTICK_RATE_HZ ( ( TickType_t ) 1000 )
#define configMAX_PRIORITIES ( 5 ) #define configMAX_PRIORITIES ( 5 )
#define configMINIMAL_STACK_SIZE ( ( unsigned short ) 512 ) #define configMINIMAL_STACK_SIZE ( ( unsigned short ) 512 )
#define configTOTAL_HEAP_SIZE ( ( size_t ) ( 10 * 1024 ) ) #define configTOTAL_HEAP_SIZE ( ( size_t ) ( 8 * 1024 ) )
#define configMAX_TASK_NAME_LEN ( 16 ) #define configMAX_TASK_NAME_LEN ( 16 )
#define configUSE_TRACE_FACILITY 1 #define configUSE_TRACE_FACILITY 1
#define configUSE_16_BIT_TICKS 0 #define configUSE_16_BIT_TICKS 0

255
FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/full_demo/RegTest.S Normal file
View file

@ -0,0 +1,255 @@
/*
* FreeRTOS Kernel V10.1.1
* Copyright (C) 2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* http://www.FreeRTOS.org
* http://aws.amazon.com/freertos
*
* 1 tab == 4 spaces!
*/
.extern ulRegTest1LoopCounter
.extern ulRegTest2LoopCounter
.global vRegTest1Task
.global vRegTest2Task
/*-----------------------------------------------------------*/
vRegTest1Task:
/* Fill the core registers with known values. */
li x5, 0x5
li x6, 0x6
li x7, 0x7
li x8, 0x8
li x9, 0x9
li x10, 0xa
li x11, 0xb
li x12, 0xc
li x13, 0xd
li x14, 0xe
li x15, 0xf
li x16, 0x10
li x17, 0x11
li x18, 0x12
li x19, 0x13
li x20, 0x14
li x21, 0x15
li x22, 0x16
li x23, 0x17
li x24, 0x18
li x25, 0x19
li x26, 0x1a
li x27, 0x1b
li x28, 0x1c
li x29, 0x1d
li x30, 0x1e
reg1_loop:
/* Check each register still contains the expected known value.
vRegTest1Implementation uses x31 as the temporary, vRegTest2Implementation
uses x5 as the temporary. */
li x31, 0x5
bne x31, x5, reg1_error_loop
li x31, 0x6
bne x31, x6, reg1_error_loop
li x31, 0x7
bne x31, x7, reg1_error_loop
li x31, 0x8
bne x31, x8, reg1_error_loop
li x31, 0x9
bne x31, x9, reg1_error_loop
li x31, 0xa
bne x31, x10, reg1_error_loop
li x31, 0xb
bne x31, x11, reg1_error_loop
li x31, 0xc
bne x31, x12, reg1_error_loop
li x31, 0xd
bne x31, x13, reg1_error_loop
li x31, 0xe
bne x31, x14, reg1_error_loop
li x31, 0xf
bne x31, x15, reg1_error_loop
li x31, 0x10
bne x31, x16, reg1_error_loop
li x31, 0x11
bne x31, x17, reg1_error_loop
li x31, 0x12
bne x31, x18, reg1_error_loop
li x31, 0x13
bne x31, x19, reg1_error_loop
li x31, 0x14
bne x31, x20, reg1_error_loop
li x31, 0x15
bne x31, x21, reg1_error_loop
li x31, 0x16
bne x31, x22, reg1_error_loop
li x31, 0x17
bne x31, x23, reg1_error_loop
li x31, 0x18
bne x31, x24, reg1_error_loop
li x31, 0x19
bne x31, x25, reg1_error_loop
li x31, 0x1a
bne x31, x26, reg1_error_loop
li x31, 0x1b
bne x31, x27, reg1_error_loop
li x31, 0x1c
bne x31, x28, reg1_error_loop
li x31, 0x1d
bne x31, x29, reg1_error_loop
li x31, 0x1e
bne x31, x30, reg1_error_loop
/* Everything passed, increment the loop counter. */
lw x31, ulRegTest1LoopCounterConst
lw x30, 0(x31)
addi x30, x30, 1
sw x30, 0(x31)
/* Restore clobbered register reading for next loop. */
li x30, 0x1e
/* Yield to increase code coverage. */
ecall
/* Start again. */
jal reg1_loop
reg1_error_loop:
/* Jump here if a register contains an uxpected value. This stops the loop
counter being incremented so the check task knows an error was found. */
jal reg1_error_loop
ulRegTest1LoopCounterConst: .word ulRegTest1LoopCounter
/*-----------------------------------------------------------*/
vRegTest2Task:
/* Fill the core registers with known values. */
li x6, 0x61
li x7, 0x71
li x8, 0x81
li x9, 0x91
li x10, 0xa1
li x11, 0xb1
li x12, 0xc1
li x13, 0xd1
li x14, 0xe1
li x15, 0xf1
li x16, 0x20
li x17, 0x21
li x18, 0x22
li x19, 0x23
li x20, 0x24
li x21, 0x25
li x22, 0x26
li x23, 0x27
li x24, 0x28
li x25, 0x29
li x26, 0x2a
li x27, 0x2b
li x28, 0x2c
li x29, 0x2d
li x30, 0x2e
li x31, 0x2f
Reg2_loop:
/* Check each register still contains the expected known value.
vRegTest2Implementation uses x5 as the temporary, vRegTest1Implementation
uses x31 as the temporary. */
li x5, 0x61
bne x5, x6, reg2_error_loop
li x5, 0x71
bne x5, x7, reg2_error_loop
li x5, 0x81
bne x5, x8, reg2_error_loop
li x5, 0x91
bne x5, x9, reg2_error_loop
li x5, 0xa1
bne x5, x10, reg2_error_loop
li x5, 0xb1
bne x5, x11, reg2_error_loop
li x5, 0xc1
bne x5, x12, reg2_error_loop
li x5, 0xd1
bne x5, x13, reg2_error_loop
li x5, 0xe1
bne x5, x14, reg2_error_loop
li x5, 0xf1
bne x5, x15, reg2_error_loop
li x5, 0x20
bne x5, x16, reg2_error_loop
li x5, 0x21
bne x5, x17, reg2_error_loop
li x5, 0x22
bne x5, x18, reg2_error_loop
li x5, 0x23
bne x5, x19, reg2_error_loop
li x5, 0x24
bne x5, x20, reg2_error_loop
li x5, 0x25
bne x5, x21, reg2_error_loop
li x5, 0x26
bne x5, x22, reg2_error_loop
li x5, 0x27
bne x5, x23, reg2_error_loop
li x5, 0x28
bne x5, x24, reg2_error_loop
li x5, 0x29
bne x5, x25, reg2_error_loop
li x5, 0x2a
bne x5, x26, reg2_error_loop
li x5, 0x2b
bne x5, x27, reg2_error_loop
li x5, 0x2c
bne x5, x28, reg2_error_loop
li x5, 0x2d
bne x5, x29, reg2_error_loop
li x5, 0x2e
bne x5, x30, reg2_error_loop
li x5, 0x2f
bne x5, x31, reg2_error_loop
/* Everything passed, increment the loop counter. */
lw x5, ulRegTest2LoopCounterConst
lw x6, 0(x5)
addi x6, x6, 1
sw x6, 0(x5)
/* Restore clobbered register reading for next loop. */
li x6, 0x61
/* Start again. */
jal Reg2_loop
reg2_error_loop:
/* Jump here if a register contains an uxpected value. This stops the loop
counter being incremented so the check task knows an error was found. */
jal reg2_error_loop
ulRegTest2LoopCounterConst: .word ulRegTest2LoopCounter

342
FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/main.c
View file

@ -30,247 +30,99 @@ void vApplicationIdleHook( void );
void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName ); void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName );
void reset_demo (void);
// Structures for registering different interrupt handlers void vRegTest1Task( void *pvParameters );
// for different parts of the application. void vRegTest2Task( void *pvParameters );
typedef void (*function_ptr_t) (void);
void no_interrupt_handler (void) {};
function_ptr_t g_ext_interrupt_handlers[PLIC_NUM_INTERRUPTS];
// Instance data for the PLIC. const char * const pcStartMessage = "FreeRTOS demo\r\n";
volatile uint32_t ulRegTest1LoopCounter = 0, ulRegTest2LoopCounter = 0;
static void prvCheckTask( void *pvParameters );
plic_instance_t g_plic; plic_instance_t g_plic;
uint32_t bitbang_mask = 0;
int main( void )
/*Entry Point for PLIC Interrupt Handler*/
void handle_m_ext_interrupt(){
plic_source int_num = PLIC_claim_interrupt(&g_plic);
if ((int_num >=1 ) && (int_num < PLIC_NUM_INTERRUPTS)) {
g_ext_interrupt_handlers[int_num]();
}
else {
exit(1 + (uintptr_t) int_num);
}
PLIC_complete_interrupt(&g_plic, int_num);
}
/*Entry Point for Machine Timer Interrupt Handler*/
void handle_m_time_interrupt(){
clear_csr(mie, MIP_MTIP);
// Reset the timer for 3s in the future.
// This also clears the existing timer interrupt.
volatile uint64_t * mtime = (uint64_t*) (CLINT_CTRL_ADDR + CLINT_MTIME);
volatile uint64_t * mtimecmp = (uint64_t*) (CLINT_CTRL_ADDR + CLINT_MTIMECMP);
uint64_t now = *mtime;
uint64_t then = now + 2 * RTC_FREQ;
*mtimecmp = then;
// read the current value of the LEDS and invert them.
uint32_t leds = GPIO_REG(GPIO_OUTPUT_VAL);
GPIO_REG(GPIO_OUTPUT_VAL) ^= ((0x1 << RED_LED_OFFSET) |
(0x1 << GREEN_LED_OFFSET) |
(0x1 << BLUE_LED_OFFSET));
// Re-enable the timer interrupt.
set_csr(mie, MIP_MTIP);
}
const char * instructions_msg = " \
\n\
SIFIVE, INC.\n\
\n\
5555555555555555555555555\n\
5555 5555\n\
5555 5555\n\
5555 5555\n\
5555 5555555555555555555555\n\
5555 555555555555555555555555\n\
5555 5555\n\
5555 5555\n\
5555 5555\n\
5555555555555555555555555555 55555\n\
55555 555555555 55555\n\
55555 55555 55555\n\
55555 5 55555\n\
55555 55555\n\
55555 55555\n\
55555 55555\n\
55555 55555\n\
55555 55555\n\
555555555\n\
55555\n\
5\n\
\n\
SiFive E-Series Software Development Kit 'demo_gpio' program.\n\
Every 2 second, the Timer Interrupt will invert the LEDs.\n\
(Arty Dev Kit Only): Press Buttons 0, 1, 2 to Set the LEDs.\n\
Pin 19 (HiFive1) or A5 (Arty Dev Kit) is being bit-banged\n\
for GPIO speed demonstration.\n\
\n\
";
void print_instructions() {
write (STDOUT_FILENO, instructions_msg, strlen(instructions_msg));
}
#ifdef HAS_BOARD_BUTTONS
void button_0_handler(void) {
// Red LED on
GPIO_REG(GPIO_OUTPUT_VAL) |= (0x1 << RED_LED_OFFSET);
// Clear the GPIO Pending interrupt by writing 1.
GPIO_REG(GPIO_RISE_IP) = (0x1 << BUTTON_0_OFFSET);
};
void button_1_handler(void) {
// Green LED On
GPIO_REG(GPIO_OUTPUT_VAL) |= (1 << GREEN_LED_OFFSET);
// Clear the GPIO Pending interrupt by writing 1.
GPIO_REG(GPIO_RISE_IP) = (0x1 << BUTTON_1_OFFSET);
};
void button_2_handler(void) {
// Blue LED On
GPIO_REG(GPIO_OUTPUT_VAL) |= (1 << BLUE_LED_OFFSET);
GPIO_REG(GPIO_RISE_IP) = (0x1 << BUTTON_2_OFFSET);
};
#endif
void reset_demo (){
// Disable the machine & timer interrupts until setup is done.
clear_csr(mie, MIP_MEIP);
clear_csr(mie, MIP_MTIP);
for (int ii = 0; ii < PLIC_NUM_INTERRUPTS; ii ++){
g_ext_interrupt_handlers[ii] = no_interrupt_handler;
}
#ifdef HAS_BOARD_BUTTONS
g_ext_interrupt_handlers[INT_DEVICE_BUTTON_0] = button_0_handler;
g_ext_interrupt_handlers[INT_DEVICE_BUTTON_1] = button_1_handler;
g_ext_interrupt_handlers[INT_DEVICE_BUTTON_2] = button_2_handler;
#endif
print_instructions();
#ifdef HAS_BOARD_BUTTONS
// Have to enable the interrupt both at the GPIO level,
// and at the PLIC level.
PLIC_enable_interrupt (&g_plic, INT_DEVICE_BUTTON_0);
PLIC_enable_interrupt (&g_plic, INT_DEVICE_BUTTON_1);
PLIC_enable_interrupt (&g_plic, INT_DEVICE_BUTTON_2);
// Priority must be set > 0 to trigger the interrupt.
PLIC_set_priority(&g_plic, INT_DEVICE_BUTTON_0, 1);
PLIC_set_priority(&g_plic, INT_DEVICE_BUTTON_1, 1);
PLIC_set_priority(&g_plic, INT_DEVICE_BUTTON_2, 1);
GPIO_REG(GPIO_RISE_IE) |= (1 << BUTTON_0_OFFSET);
GPIO_REG(GPIO_RISE_IE) |= (1 << BUTTON_1_OFFSET);
GPIO_REG(GPIO_RISE_IE) |= (1 << BUTTON_2_OFFSET);
#endif
// Set the machine timer to go off in 3 seconds.
// The
volatile uint64_t * mtime = (uint64_t*) (CLINT_CTRL_ADDR + CLINT_MTIME);
volatile uint64_t * mtimecmp = (uint64_t*) (CLINT_CTRL_ADDR + CLINT_MTIMECMP);
uint64_t now = *mtime;
uint64_t then = now + 2*RTC_FREQ;
*mtimecmp = then;
// Enable the Machine-External bit in MIE
set_csr(mie, MIP_MEIP);
// Enable the Machine-Timer bit in MIE
set_csr(mie, MIP_MTIP);
// Enable interrupts in general.
set_csr(mstatus, MSTATUS_MIE);
}
int main(int argc, char **argv)
{ {
// Set up the GPIOs such that the LED GPIO #ifdef HAS_BOARD_BUTTONS
// can be used as both Inputs and Outputs. GPIO_REG(GPIO_OUTPUT_EN) &= ~((0x1 << BUTTON_0_OFFSET) | (0x1 << BUTTON_1_OFFSET) | (0x1 << BUTTON_2_OFFSET));
GPIO_REG(GPIO_PULLUP_EN) &= ~((0x1 << BUTTON_0_OFFSET) | (0x1 << BUTTON_1_OFFSET) | (0x1 << BUTTON_2_OFFSET));
GPIO_REG(GPIO_INPUT_EN) |= ((0x1 << BUTTON_0_OFFSET) | (0x1 << BUTTON_1_OFFSET) | (0x1 << BUTTON_2_OFFSET));
#endif
GPIO_REG(GPIO_INPUT_EN) &= ~((0x1<< RED_LED_OFFSET) | (0x1<< GREEN_LED_OFFSET) | (0x1 << BLUE_LED_OFFSET)) ;
GPIO_REG(GPIO_OUTPUT_EN) |= ((0x1<< RED_LED_OFFSET)| (0x1<< GREEN_LED_OFFSET) | (0x1 << BLUE_LED_OFFSET)) ;
GPIO_REG(GPIO_OUTPUT_VAL) |= (0x1 << BLUE_LED_OFFSET) ;
GPIO_REG(GPIO_OUTPUT_VAL) &= ~((0x1<< RED_LED_OFFSET) | (0x1<< GREEN_LED_OFFSET)) ;
#ifdef HAS_BOARD_BUTTONS /* For Bit-banging with Atomics demo. */
GPIO_REG(GPIO_OUTPUT_EN) &= ~((0x1 << BUTTON_0_OFFSET) | (0x1 << BUTTON_1_OFFSET) | (0x1 << BUTTON_2_OFFSET)); #ifdef _SIFIVE_HIFIVE1_H
GPIO_REG(GPIO_PULLUP_EN) &= ~((0x1 << BUTTON_0_OFFSET) | (0x1 << BUTTON_1_OFFSET) | (0x1 << BUTTON_2_OFFSET)); bitbang_mask = (1 << PIN_19_OFFSET);
GPIO_REG(GPIO_INPUT_EN) |= ((0x1 << BUTTON_0_OFFSET) | (0x1 << BUTTON_1_OFFSET) | (0x1 << BUTTON_2_OFFSET)); #else
#endif #ifdef _SIFIVE_COREPLEXIP_ARTY_H
bitbang_mask = (0x1 << JA_0_OFFSET);
#endif
#endif
GPIO_REG(GPIO_INPUT_EN) &= ~((0x1<< RED_LED_OFFSET) | (0x1<< GREEN_LED_OFFSET) | (0x1 << BLUE_LED_OFFSET)) ; GPIO_REG(GPIO_OUTPUT_EN) |= bitbang_mask;
GPIO_REG(GPIO_OUTPUT_EN) |= ((0x1<< RED_LED_OFFSET)| (0x1<< GREEN_LED_OFFSET) | (0x1 << BLUE_LED_OFFSET)) ;
GPIO_REG(GPIO_OUTPUT_VAL) |= (0x1 << BLUE_LED_OFFSET) ;
GPIO_REG(GPIO_OUTPUT_VAL) &= ~((0x1<< RED_LED_OFFSET) | (0x1<< GREEN_LED_OFFSET)) ;
// xTaskCreate( vRegTest1Task, "RegTest1", 1000, NULL, tskIDLE_PRIORITY, NULL );
// xTaskCreate( vRegTest2Task, "RegTest2", 1000, NULL, tskIDLE_PRIORITY, NULL );
xTaskCreate( prvCheckTask, "Check", 1000, NULL, configMAX_PRIORITIES - 1, NULL );
// For Bit-banging with Atomics demo. vTaskStartScheduler();
uint32_t bitbang_mask = 0;
#ifdef _SIFIVE_HIFIVE1_H
bitbang_mask = (1 << PIN_19_OFFSET);
#else
#ifdef _SIFIVE_COREPLEXIP_ARTY_H
bitbang_mask = (0x1 << JA_0_OFFSET);
#endif
#endif
GPIO_REG(GPIO_OUTPUT_EN) |= bitbang_mask;
/**************************************************************************
* Set up the PLIC
*
*************************************************************************/
PLIC_init(&g_plic,
PLIC_CTRL_ADDR,
PLIC_NUM_INTERRUPTS,
PLIC_NUM_PRIORITIES);
reset_demo();
/**************************************************************************
* Demonstrate fast GPIO bit-banging.
* One can bang it faster than this if you know
* the entire OUTPUT_VAL that you want to write, but
* Atomics give a quick way to control a single bit.
*************************************************************************/
// For Bit-banging with Atomics demo.
while (1){
atomic_fetch_xor_explicit(&GPIO_REG(GPIO_OUTPUT_VAL), bitbang_mask, memory_order_relaxed);
}
return 0;
} }
/*-----------------------------------------------------------*/
static void prvCheckTask( void *pvParameters )
{
const char *pcMessage = "PASS\r\n";
const TickType_t xCheckPeriod = pdMS_TO_TICKS( 3000UL );
uint32_t ulLastRegTest1LoopCounter = 0, ulLastRegTest2LoopCounter = 0;
volatile uintptr_t mstatus;
volatile uint32_t ulx;
__asm volatile ("csrr %0, mstatus" : "=r"(mstatus));
portENABLE_INTERRUPTS();
__asm volatile ("csrr %0, mstatus" : "=r"(mstatus));
for( ;; )
{
// for( ulx = 0; ulx < 0xffff; ulx++ ) __asm volatile( "NOP" );
// vPortSetupTimerInterrupt();
vTaskDelay( xCheckPeriod );
write( STDOUT_FILENO, "Blip\r\n", strlen( "Blip\r\n" ) );
}
#if 0
for( ;; )
{
vTaskDelay( xCheckPeriod );
if( ulLastRegTest1LoopCounter == ulRegTest1LoopCounter )
{
/* The RegTest1 loop counter is no longer incrementing, indicating
the task failed its self check. */
pcMessage = "FAIL: RegTest1\r\n";
}
else
{
ulLastRegTest1LoopCounter = ulRegTest1LoopCounter;
}
if( ulLastRegTest2LoopCounter == ulRegTest2LoopCounter )
{
/* The RegTest1 loop counter is no longer incrementing, indicating
the task failed its self check. */
pcMessage = "FAIL: RegTest2\r\n";
}
else
{
ulLastRegTest2LoopCounter = ulRegTest2LoopCounter;
}
vUARTWriteString( pcMessage );
}
#endif
}
/*-----------------------------------------------------------*/
void vApplicationMallocFailedHook( void ) void vApplicationMallocFailedHook( void )
{ {
@ -316,11 +168,35 @@ void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName )
} }
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
#define mainINTERRUPT_BIT_SET 0x80000000UL
#define mainENVIRONMENT_CALL 11UL
#define mainEXTERNAL_INTERRRUPT ( mainINTERRUPT_BIT_SET | 11UL )
#define mainTIMER_INTERRUPT ( mainINTERRUPT_BIT_SET | 7UL )
#define mainSOFTWARE_INTERRUPT ( mainINTERRUPT_BIT_SET | 3UL )
extern void Timer_IRQHandler( void );
void trap_entry( void ) uint32_t ulPortTrapHandler( uint32_t mcause, uint32_t mepc )
{ {
#warning Dummy until kernel code is incldued. if( mcause == mainENVIRONMENT_CALL )
{
vTaskSwitchContext();
/* Ensure not to return to the instruction that generated the exception. */
mepc += 4;
}
else if( mcause == mainEXTERNAL_INTERRRUPT )
{
for( ;; );
}
else if( mcause == mainTIMER_INTERRUPT )
{
Timer_IRQHandler();
}
else if( mcause == mainSOFTWARE_INTERRUPT )
{
for( ;; );
}
return mepc;
} }

6
FreeRTOS/Source/include/task.h
View file

@ -376,9 +376,9 @@ is used in assert() statements. */
* memory to be allocated dynamically. * memory to be allocated dynamically.
* *
* @return If neither pxStackBuffer or pxTaskBuffer are NULL, then the task will * @return If neither pxStackBuffer or pxTaskBuffer are NULL, then the task will
* be created and pdPASS is returned. If either pxStackBuffer or pxTaskBuffer * be created and a handle to the created task is returned. If either
* are NULL then the task will not be created and * pxStackBuffer or pxTaskBuffer are NULL then the task will not be created and
* errCOULD_NOT_ALLOCATE_REQUIRED_MEMORY is returned. * NULL is returned.
* *
* Example usage: * Example usage:
<pre> <pre>

18
FreeRTOS/Source/portable/GCC/RISC-V-RV32/port.c
View file

@ -51,7 +51,7 @@ static void prvTaskExitError( void );
/* Used to program the machine timer compare register. */ /* Used to program the machine timer compare register. */
static uint64_t ullNextTime = 0ULL; static uint64_t ullNextTime = 0ULL;
static const uint64_t ullTimerIncrementsForOneTick = ( uint64_t ) ( configCPU_CLOCK_HZ / configTICK_RATE_HZ ); static const uint64_t ullTimerIncrementsForOneTick = ( uint64_t ) ( configCPU_CLOCK_HZ / configTICK_RATE_HZ );
static volatile uint64_t * const pullMachineTimerCompareRegister = ( volatile uint64_t * const ) ( configCTRL_BASE + 0x4000 ); static volatile uint64_t * const pullMachineTimerCompareRegister = ( volatile uint64_t * const ) ( configCLINT_BASE_ADDRESS + 0x4000 );
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
@ -175,8 +175,8 @@ const uint32_t ulMPIE_Bit = 0x80, ulMPP_Bits = 0x1800;
void vPortSetupTimerInterrupt( void ) void vPortSetupTimerInterrupt( void )
{ {
uint32_t ulCurrentTimeHigh, ulCurrentTimeLow; uint32_t ulCurrentTimeHigh, ulCurrentTimeLow;
volatile uint32_t * const pulTimeHigh = ( volatile uint32_t * const ) ( configCTRL_BASE + 0xBFFC ); volatile uint32_t * const pulTimeHigh = ( volatile uint32_t * const ) ( configCLINT_BASE_ADDRESS + 0xBFFC );
volatile uint32_t * const pulTimeLow = ( volatile uint32_t * const ) ( configCTRL_BASE + 0xBFF8 ); volatile uint32_t * const pulTimeLow = ( volatile uint32_t * const ) ( configCLINT_BASE_ADDRESS + 0xBFF8 );
do do
{ {
@ -200,12 +200,12 @@ volatile uint32_t * const pulTimeLow = ( volatile uint32_t * const ) ( configCTR
void Software_IRQHandler( void ) void Software_IRQHandler( void )
{ {
volatile uint32_t * const ulSoftInterrupt = ( uint32_t * ) configCTRL_BASE; volatile uint32_t * const ulSoftInterrupt = ( uint32_t * ) configCLINT_BASE_ADDRESS;
vTaskSwitchContext(); vTaskSwitchContext();
/* Clear software interrupt. */ /* Clear software interrupt. */
*( ( uint32_t * ) configCTRL_BASE ) &= 0x08UL; *( ( uint32_t * ) configCLINT_BASE_ADDRESS ) &= 0x08UL;
} }
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
@ -246,6 +246,14 @@ extern void xPortStartFirstTask( void );
should be executing. */ should be executing. */
return pdFAIL; return pdFAIL;
} }
/*-----------------------------------------------------------*/
void vPortEndScheduler( void )
{
/* Not implemented. */
for( ;; );
}

7
FreeRTOS/Source/portable/GCC/RISC-V-RV32/portASM.S
View file

@ -41,13 +41,16 @@
.global xPortStartFirstTask .global xPortStartFirstTask
.global vPortTrapHandler .global vPortTrapHandler
.extern pxCurrentTCB .extern pxCurrentTCB
.extern handle_trap .extern ulPortTrapHandler
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
.align 8 .align 8
xPortStartFirstTask: xPortStartFirstTask:
la t0, vPortTrapHandler
csrw mtvec, t0
lw sp, pxCurrentTCB /* Load pxCurrentTCB. */ lw sp, pxCurrentTCB /* Load pxCurrentTCB. */
lw sp, 0( sp ) /* Read sp from first TCB member. */ lw sp, 0( sp ) /* Read sp from first TCB member. */
@ -127,7 +130,7 @@ vPortTrapHandler:
csrr a1, mepc csrr a1, mepc
mv a2, sp mv a2, sp
/*_RB_ Does stack need aligning here? */ /*_RB_ Does stack need aligning here? */
jal handle_trap jal ulPortTrapHandler
csrw mepc, a0 csrw mepc, a0
/* Save exception return address. */ /* Save exception return address. */
sw a0, 0( sp ) sw a0, 0( sp )

2
FreeRTOS/Source/portable/GCC/RISC-V-RV32/portmacro.h
View file

@ -70,7 +70,7 @@ not need to be guarded with a critical section. */
/* Scheduler utilities. */ /* Scheduler utilities. */
#define portYIELD() __asm volatile( "ecall" ); // software interrupt alternative *( ( uint32_t * ) configCTRL_BASE ) |= 0x08UL #define portYIELD() __asm volatile( "ecall" ); // software interrupt alternative *( ( uint32_t * ) configCLINT_BASE_ADDRESS ) |= 0x08UL
#define portEND_SWITCHING_ISR( xSwitchRequired ) if( xSwitchRequired ) vPortYield() #define portEND_SWITCHING_ISR( xSwitchRequired ) if( xSwitchRequired ) vPortYield()
#define portYIELD_FROM_ISR( x ) portEND_SWITCHING_ISR( x ) #define portYIELD_FROM_ISR( x ) portEND_SWITCHING_ISR( x )
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/

42
FreeRTOS/Source/tasks.c
View file

@ -2937,28 +2937,28 @@ void vTaskSwitchContext( void )
#if ( configGENERATE_RUN_TIME_STATS == 1 ) #if ( configGENERATE_RUN_TIME_STATS == 1 )
{ {
#ifdef portALT_GET_RUN_TIME_COUNTER_VALUE #ifdef portALT_GET_RUN_TIME_COUNTER_VALUE
portALT_GET_RUN_TIME_COUNTER_VALUE( ulTotalRunTime ); portALT_GET_RUN_TIME_COUNTER_VALUE( ulTotalRunTime );
#else #else
ulTotalRunTime = portGET_RUN_TIME_COUNTER_VALUE(); ulTotalRunTime = portGET_RUN_TIME_COUNTER_VALUE();
#endif #endif
/* Add the amount of time the task has been running to the /* Add the amount of time the task has been running to the
accumulated time so far. The time the task started running was accumulated time so far. The time the task started running was
stored in ulTaskSwitchedInTime. Note that there is no overflow stored in ulTaskSwitchedInTime. Note that there is no overflow
protection here so count values are only valid until the timer protection here so count values are only valid until the timer
overflows. The guard against negative values is to protect overflows. The guard against negative values is to protect
against suspect run time stat counter implementations - which against suspect run time stat counter implementations - which
are provided by the application, not the kernel. */ are provided by the application, not the kernel. */
if( ulTotalRunTime > ulTaskSwitchedInTime ) if( ulTotalRunTime > ulTaskSwitchedInTime )
{ {
pxCurrentTCB->ulRunTimeCounter += ( ulTotalRunTime - ulTaskSwitchedInTime ); pxCurrentTCB->ulRunTimeCounter += ( ulTotalRunTime - ulTaskSwitchedInTime );
} }
else else
{ {
mtCOVERAGE_TEST_MARKER(); mtCOVERAGE_TEST_MARKER();
} }
ulTaskSwitchedInTime = ulTotalRunTime; ulTaskSwitchedInTime = ulTotalRunTime;
} }
#endif /* configGENERATE_RUN_TIME_STATS */ #endif /* configGENERATE_RUN_TIME_STATS */