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Recreate the RISC-V-Qemu demo using Vanilla Eclipse in place of Freedom Studio as there is not a new Freedom Studio project that targets the HiFive1 board, and the updated Freedom Studio version didn't work with this project any more anyway.

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pull/3/head
Richard Barry 5 years ago
parent d435a7b62d
commit f78ccd077a
15 changed files with 118 additions and 802 deletions
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220
FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/.cproject
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48
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@ -25,120 +25,120 @@
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<name>freertos_source/queue.c</name>
<type>1</type>
<locationURI>FREERTOS_ROOT/FreeRTOS/Source/queue.c</locationURI>
</link>
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<name>FreeRTOS_Source/stream_buffer.c</name>
<name>freertos_source/stream_buffer.c</name>
<type>1</type>
<locationURI>FREERTOS_ROOT/FreeRTOS/Source/stream_buffer.c</locationURI>
</link>
<link>
<name>FreeRTOS_Source/tasks.c</name>
<name>freertos_source/tasks.c</name>
<type>1</type>
<locationURI>FREERTOS_ROOT/FreeRTOS/Source/tasks.c</locationURI>
</link>
<link>
<name>FreeRTOS_Source/timers.c</name>
<name>freertos_source/timers.c</name>
<type>1</type>
<locationURI>FREERTOS_ROOT/FreeRTOS/Source/timers.c</locationURI>
</link>
<link>
<name>full_demo/common_demo_tasks</name>
<name>full_demo/standard_demo_tasks</name>
<type>2</type>
<locationURI>virtual:/virtual</locationURI>
</link>
<link>
<name>FreeRTOS_Source/portable/GCC</name>
<name>freertos_source/portable/GCC</name>
<type>2</type>
<locationURI>virtual:/virtual</locationURI>
</link>
<link>
<name>FreeRTOS_Source/portable/MemMang</name>
<name>freertos_source/portable/MemMang</name>
<type>2</type>
<locationURI>virtual:/virtual</locationURI>
</link>
<link>
<name>full_demo/common_demo_tasks/EventGroupsDemo.c</name>
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<name>full_demo/standard_demo_tasks/GenQTest.c</name>
<type>1</type>
<locationURI>FREERTOS_ROOT/FreeRTOS/Demo/Common/Minimal/GenQTest.c</locationURI>
</link>
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<name>full_demo/common_demo_tasks/TaskNotify.c</name>
<name>full_demo/standard_demo_tasks/TaskNotify.c</name>
<type>1</type>
<locationURI>FREERTOS_ROOT/FreeRTOS/Demo/Common/Minimal/TaskNotify.c</locationURI>
</link>
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<name>full_demo/common_demo_tasks/TimerDemo.c</name>
<name>full_demo/standard_demo_tasks/TimerDemo.c</name>
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<locationURI>FREERTOS_ROOT/FreeRTOS/Demo/Common/Minimal/TimerDemo.c</locationURI>
</link>
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<name>full_demo/common_demo_tasks/blocktim.c</name>
<name>full_demo/standard_demo_tasks/blocktim.c</name>
<type>1</type>
<locationURI>FREERTOS_ROOT/FreeRTOS/Demo/Common/Minimal/blocktim.c</locationURI>
</link>
<link>
<name>full_demo/common_demo_tasks/dynamic.c</name>
<name>full_demo/standard_demo_tasks/dynamic.c</name>
<type>1</type>
<locationURI>FREERTOS_ROOT/FreeRTOS/Demo/Common/Minimal/dynamic.c</locationURI>
</link>
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<name>full_demo/common_demo_tasks/include</name>
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<locationURI>FREERTOS_ROOT/FreeRTOS/Demo/Common/include</locationURI>
</link>
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<name>full_demo/common_demo_tasks/recmutex.c</name>
<name>full_demo/standard_demo_tasks/recmutex.c</name>
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<locationURI>FREERTOS_ROOT/FreeRTOS/Demo/Common/Minimal/recmutex.c</locationURI>
</link>
<link>
<name>FreeRTOS_Source/portable/GCC/RISC-V</name>
<name>freertos_source/portable/GCC/RISC-V</name>
<type>2</type>
<locationURI>FREERTOS_ROOT/FreeRTOS/Source/portable/GCC/RISC-V</locationURI>
</link>
<link>
<name>FreeRTOS_Source/portable/MemMang/heap_4.c</name>
<name>freertos_source/portable/MemMang/heap_4.c</name>
<type>1</type>
<locationURI>FREERTOS_ROOT/FreeRTOS/Source/portable/MemMang/heap_4.c</locationURI>
</link>
</linkedResources>
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<filter>
<id>1546280186727</id>
<name>FreeRTOS_Source/portable/GCC/RISC-V/chip_specific_extensions</name>
<id>1571146760235</id>
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<type>9</type>
<matcher>
<id>org.eclipse.ui.ide.multiFilter</id>

56
FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/.settings/language.settings.xml
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@ -1,48 +1,14 @@
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<project>
<configuration id="ilg.gnumcueclipse.managedbuild.cross.riscv.config.elf.debug.516870870" name="Debug">
<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
<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="589632151712267266" 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>
</extension>
</configuration>
<configuration id="ilg.gnumcueclipse.managedbuild.cross.riscv.config.elf.release.1992646408" name="Release">
<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
<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="602853956613322166" 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>
</extension>
</configuration>
<configuration id="cdt.managedbuild.config.gnu.cross.exe.debug.244253252" name="Debug">
<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
<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.internal.build.crossgcc.CrossGCCBuiltinSpecsDetector" console="false" env-hash="-564276645149001" id="org.eclipse.cdt.build.crossgcc.CrossGCCBuiltinSpecsDetector" keep-relative-paths="false" name="CDT Cross GCC Built-in Compiler Settings" parameter="${COMMAND} ${FLAGS} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
<language-scope id="org.eclipse.cdt.core.gcc"/>
<language-scope id="org.eclipse.cdt.core.g++"/>
</provider>
</extension>
</configuration>
</project>

7
FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/FreeRTOSConfig.h
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@ -103,7 +103,7 @@
#define configTICK_RATE_HZ ( ( TickType_t ) 1000 )
#define configMAX_PRIORITIES ( 7 )
#define configMINIMAL_STACK_SIZE ( ( unsigned short ) 70 )
#define configTOTAL_HEAP_SIZE ( ( size_t ) 14100 )
#define configTOTAL_HEAP_SIZE ( ( size_t ) 14500 )
#define configMAX_TASK_NAME_LEN ( 16 )
#define configUSE_TRACE_FACILITY 0
#define configUSE_16_BIT_TICKS 0
@ -126,7 +126,7 @@
#define configUSE_TIMERS 1
#define configTIMER_TASK_PRIORITY ( configMAX_PRIORITIES - 1 )
#define configTIMER_QUEUE_LENGTH 4
#define configTIMER_TASK_STACK_DEPTH ( 100 )
#define configTIMER_TASK_STACK_DEPTH ( 120 )
/* Task priorities. Allow these to be overridden. */
#ifndef uartPRIMARY_PRIORITY
@ -144,6 +144,9 @@ to exclude the API function. */
#define INCLUDE_vTaskDelay 1
#define INCLUDE_eTaskGetState 1
#define INCLUDE_xTimerPendFunctionCall 1
#define INCLUDE_xTaskAbortDelay 1
#define INCLUDE_xTaskGetHandle 1
#define INCLUDE_xSemaphoreGetMutexHolder 1
/* Normal assert() semantics without relying on the provision of an assert.h
header file. */

3
FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/Hardware_Qemu.launch
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@ -8,6 +8,7 @@
<stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.initCommands" value=""/>
<stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.ipAddress" value="localhost"/>
<stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.jtagDevice" value="Generic TCP/IP"/>
<stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.jtagDeviceId" value="org.eclipse.cdt.debug.gdbjtag.core.jtagdevice.genericDevice"/>
<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.loadImage" value="false"/>
<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.loadSymbols" value="true"/>
<stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.pcRegister" value=""/>
@ -25,6 +26,8 @@
<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.useProjBinaryForSymbols" value="true"/>
<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.useRemoteTarget" value="true"/>
<stringAttribute key="org.eclipse.cdt.dsf.gdb.DEBUG_NAME" value="riscv64-unknown-elf-gdb.exe -iex &quot;set mem inaccessible-by-default off&quot; -iex &quot;set arch riscv:rv32&quot; -iex &quot;set riscv use_compressed_breakpoint off&quot;"/>
<booleanAttribute key="org.eclipse.cdt.dsf.gdb.REMOTE_TIMEOUT_ENABLED" value="false"/>
<stringAttribute key="org.eclipse.cdt.dsf.gdb.REMOTE_TIMEOUT_VALUE" value=""/>
<booleanAttribute key="org.eclipse.cdt.dsf.gdb.UPDATE_THREADLIST_ON_SUSPEND" value="false"/>
<intAttribute key="org.eclipse.cdt.launch.ATTR_BUILD_BEFORE_LAUNCH_ATTR" value="2"/>
<stringAttribute key="org.eclipse.cdt.launch.COREFILE_PATH" value=""/>

5
FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/blinky_demo/main_blinky.c
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@ -175,6 +175,7 @@ unsigned long ulReceivedValue;
const unsigned long ulExpectedValue = 100UL;
const char * const pcPassMessage = "Blink\r\n";
const char * const pcFailMessage = "Unexpected value received\r\n";
extern void vSendString( const char * pcString );
/* Remove compiler warning about unused parameter. */
( void ) pvParameters;
@ -190,12 +191,12 @@ const char * const pcFailMessage = "Unexpected value received\r\n";
is it the expected value? If it is, toggle the LED. */
if( ulReceivedValue == ulExpectedValue )
{
write( STDOUT_FILENO, pcPassMessage, strlen( pcPassMessage ) );
vSendString( pcPassMessage );
ulReceivedValue = 0U;
}
else
{
write( STDOUT_FILENO, pcFailMessage, strlen( pcFailMessage ) );
vSendString( pcFailMessage );
}
}
}

252
FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/freedom-e-sdk/drivers/fe300prci/fe300prci_driver.c
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@ -1,252 +0,0 @@
// See LICENSE file for license details
#include "platform.h"
#ifdef PRCI_CTRL_ADDR
#include "fe300prci/fe300prci_driver.h"
#include <unistd.h>
#define rdmcycle(x) { \
uint32_t lo, hi, hi2; \
__asm__ __volatile__ ("1:\n\t" \
"csrr %0, mcycleh\n\t" \
"csrr %1, mcycle\n\t" \
"csrr %2, mcycleh\n\t" \
"bne %0, %2, 1b\n\t" \
: "=r" (hi), "=r" (lo), "=r" (hi2)) ; \
*(x) = lo | ((uint64_t) hi << 32); \
}
uint32_t PRCI_measure_mcycle_freq(uint32_t mtime_ticks, uint32_t mtime_freq)
{
uint32_t start_mtime = CLINT_REG(CLINT_MTIME);
uint32_t end_mtime = start_mtime + mtime_ticks + 1;
// Make sure we won't get rollover.
while (end_mtime < start_mtime){
start_mtime = CLINT_REG(CLINT_MTIME);
end_mtime = start_mtime + mtime_ticks + 1;
}
// Don't start measuring until mtime edge.
uint32_t tmp = start_mtime;
do {
start_mtime = CLINT_REG(CLINT_MTIME);
} while (start_mtime == tmp);
uint64_t start_mcycle;
rdmcycle(&start_mcycle);
while (CLINT_REG(CLINT_MTIME) < end_mtime) ;
uint64_t end_mcycle;
rdmcycle(&end_mcycle);
uint32_t difference = (uint32_t) (end_mcycle - start_mcycle);
uint64_t freq = ((uint64_t) difference * mtime_freq) / mtime_ticks;
return (uint32_t) freq & 0xFFFFFFFF;
}
void PRCI_use_hfrosc(int div, int trim)
{
// Make sure the HFROSC is running at its default setting
// It is OK to change this even if we are running off of it.
PRCI_REG(PRCI_HFROSCCFG) = (ROSC_DIV(div) | ROSC_TRIM(trim) | ROSC_EN(1));
while ((PRCI_REG(PRCI_HFROSCCFG) & ROSC_RDY(1)) == 0);
PRCI_REG(PRCI_PLLCFG) &= ~PLL_SEL(1);
}
void PRCI_use_pll(int refsel, int bypass,
int r, int f, int q, int finaldiv,
int hfroscdiv, int hfrosctrim)
{
// Ensure that we aren't running off the PLL before we mess with it.
if (PRCI_REG(PRCI_PLLCFG) & PLL_SEL(1)) {
// Make sure the HFROSC is running at its default setting
PRCI_use_hfrosc(4, 16);
}
// Set PLL Source to be HFXOSC if desired.
uint32_t config_value = 0;
config_value |= PLL_REFSEL(refsel);
if (bypass) {
// Bypass
config_value |= PLL_BYPASS(1);
PRCI_REG(PRCI_PLLCFG) = config_value;
// If we don't have an HFXTAL, this doesn't really matter.
// Set our Final output divide to divide-by-1:
PRCI_REG(PRCI_PLLDIV) = (PLL_FINAL_DIV_BY_1(1) | PLL_FINAL_DIV(0));
} else {
// To overclock, use the hfrosc
if (hfrosctrim >= 0 && hfroscdiv >= 0) {
PRCI_use_hfrosc(hfroscdiv, hfrosctrim);
}
// Set DIV Settings for PLL
// (Legal values of f_REF are 6-48MHz)
// Set DIVR to divide-by-2 to get 8MHz frequency
// (legal values of f_R are 6-12 MHz)
config_value |= PLL_BYPASS(1);
config_value |= PLL_R(r);
// Set DIVF to get 512Mhz frequncy
// There is an implied multiply-by-2, 16Mhz.
// So need to write 32-1
// (legal values of f_F are 384-768 MHz)
config_value |= PLL_F(f);
// Set DIVQ to divide-by-2 to get 256 MHz frequency
// (legal values of f_Q are 50-400Mhz)
config_value |= PLL_Q(q);
// Set our Final output divide to divide-by-1:
if (finaldiv == 1){
PRCI_REG(PRCI_PLLDIV) = (PLL_FINAL_DIV_BY_1(1) | PLL_FINAL_DIV(0));
} else {
PRCI_REG(PRCI_PLLDIV) = (PLL_FINAL_DIV(finaldiv-1));
}
PRCI_REG(PRCI_PLLCFG) = config_value;
// Un-Bypass the PLL.
PRCI_REG(PRCI_PLLCFG) &= ~PLL_BYPASS(1);
// Wait for PLL Lock
// Note that the Lock signal can be glitchy.
// Need to wait 100 us
// RTC is running at 32kHz.
// So wait 4 ticks of RTC.
uint32_t now = CLINT_REG(CLINT_MTIME);
while (CLINT_REG(CLINT_MTIME) - now < 4) ;
// Now it is safe to check for PLL Lock
while ((PRCI_REG(PRCI_PLLCFG) & PLL_LOCK(1)) == 0);
}
// Switch over to PLL Clock source
PRCI_REG(PRCI_PLLCFG) |= PLL_SEL(1);
// If we're running off HFXOSC, turn off the HFROSC to
// save power.
if (refsel) {
PRCI_REG(PRCI_HFROSCCFG) &= ~ROSC_EN(1);
}
}
void PRCI_use_default_clocks()
{
// Turn off the LFROSC
AON_REG(AON_LFROSC) &= ~ROSC_EN(1);
// Use HFROSC
PRCI_use_hfrosc(4, 16);
}
void PRCI_use_hfxosc(uint32_t finaldiv)
{
PRCI_use_pll(1, // Use HFXTAL
1, // Bypass = 1
0, // PLL settings don't matter
0, // PLL settings don't matter
0, // PLL settings don't matter
finaldiv,
-1,
-1);
}
// This is a generic function, which
// doesn't span the entire range of HFROSC settings.
// It only adjusts the trim, which can span a hundred MHz or so.
// This function does not check the legality of the PLL settings
// at all, and it is quite possible to configure invalid PLL settings
// this way.
// It returns the actual measured CPU frequency.
uint32_t PRCI_set_hfrosctrim_for_f_cpu(uint32_t f_cpu, PRCI_freq_target target )
{
uint32_t hfrosctrim = 0;
uint32_t hfroscdiv = 4;
uint32_t prev_trim = 0;
// In this function we use PLL settings which
// will give us a 32x multiplier from the output
// of the HFROSC source to the output of the
// PLL. We first measure our HFROSC to get the
// right trim, then finally use it as the PLL source.
// We should really check here that the f_cpu
// requested is something in the limit of the PLL. For
// now that is up to the user.
// This will undershoot for frequencies not divisible by 16.
uint32_t desired_hfrosc_freq = (f_cpu/ 16);
PRCI_use_hfrosc(hfroscdiv, hfrosctrim);
// Ignore the first run (for icache reasons)
uint32_t cpu_freq = PRCI_measure_mcycle_freq(3000, RTC_FREQ);
cpu_freq = PRCI_measure_mcycle_freq(3000, RTC_FREQ);
uint32_t prev_freq = cpu_freq;
while ((cpu_freq < desired_hfrosc_freq) && (hfrosctrim < 0x1F)){
prev_trim = hfrosctrim;
prev_freq = cpu_freq;
hfrosctrim ++;
PRCI_use_hfrosc(hfroscdiv, hfrosctrim);
cpu_freq = PRCI_measure_mcycle_freq(3000, RTC_FREQ);
}
// We couldn't go low enough
if (prev_freq > desired_hfrosc_freq){
PRCI_use_pll(0, 0, 1, 31, 1, 1, hfroscdiv, prev_trim);
cpu_freq = PRCI_measure_mcycle_freq(1000, RTC_FREQ);
return cpu_freq;
}
// We couldn't go high enough
if (cpu_freq < desired_hfrosc_freq){
PRCI_use_pll(0, 0, 1, 31, 1, 1, hfroscdiv, prev_trim);
cpu_freq = PRCI_measure_mcycle_freq(1000, RTC_FREQ);
return cpu_freq;
}
// Check for over/undershoot
switch(target) {
case(PRCI_FREQ_CLOSEST):
if ((desired_hfrosc_freq - prev_freq) < (cpu_freq - desired_hfrosc_freq)) {
PRCI_use_pll(0, 0, 1, 31, 1, 1, hfroscdiv, prev_trim);
} else {
PRCI_use_pll(0, 0, 1, 31, 1, 1, hfroscdiv, hfrosctrim);
}
break;
case(PRCI_FREQ_UNDERSHOOT):
PRCI_use_pll(0, 0, 1, 31, 1, 1, hfroscdiv, prev_trim);
break;
default:
PRCI_use_pll(0, 0, 1, 31, 1, 1, hfroscdiv, hfrosctrim);
}
cpu_freq = PRCI_measure_mcycle_freq(1000, RTC_FREQ);
return cpu_freq;
}
#endif

79
FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/freedom-e-sdk/drivers/fe300prci/fe300prci_driver.h
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@ -1,79 +0,0 @@
// See LICENSE file for license details
#ifndef _FE300PRCI_DRIVER_H_
#define _FE300PRCI_DRIVER_H_
__BEGIN_DECLS
#include <unistd.h>
typedef enum prci_freq_target {
PRCI_FREQ_OVERSHOOT,
PRCI_FREQ_CLOSEST,
PRCI_FREQ_UNDERSHOOT
} PRCI_freq_target;
/* Measure and return the approximate frequency of the
* CPU, as given by measuring the mcycle counter against
* the mtime ticks.
*/
uint32_t PRCI_measure_mcycle_freq(uint32_t mtime_ticks, uint32_t mtime_freq);
/* Safely switch over to the HFROSC using the given div
* and trim settings.
*/
void PRCI_use_hfrosc(int div, int trim);
/* Safely switch over to the 16MHz HFXOSC,
* applying the finaldiv clock divider (1 is the lowest
* legal value).
*/
void PRCI_use_hfxosc(uint32_t finaldiv);
/* Safely switch over to the PLL using the given
* settings.
*
* Note that not all combinations of the inputs are actually
* legal, and this function does not check for their
* legality ("safely" means that this function won't turn off
* or glitch the clock the CPU is actually running off, but
* doesn't protect against you making it too fast or slow.)
*/
void PRCI_use_pll(int refsel, int bypass,
int r, int f, int q, int finaldiv,
int hfroscdiv, int hfrosctrim);
/* Use the default clocks configured at reset.
* This is ~16Mhz HFROSC and turns off the LFROSC
* (on the current FE310 Dev Platforms, an external LFROSC is
* used as it is more power efficient).
*/
void PRCI_use_default_clocks();
/* This routine will adjust the HFROSC trim
* while using HFROSC as the clock source,
* measure the resulting frequency, then
* use it as the PLL clock source,
* in an attempt to get over, under, or close to the
* requested frequency. It returns the actual measured
* frequency.
*
* Note that the requested frequency must be within the
* range supported by the PLL so not all values are
* achievable with this function, and not all
* are guaranteed to actually work. The PLL
* is rated higher than the hardware.
*
* There is no check on the desired f_cpu frequency, it
* is up to the user to specify something reasonable.
*/
uint32_t PRCI_set_hfrosctrim_for_f_cpu(uint32_t f_cpu, PRCI_freq_target target);
__END_DECLS
#endif

127
FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/freedom-e-sdk/drivers/plic/plic_driver.c
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@ -1,127 +0,0 @@
// See LICENSE for license details.
#include "sifive/devices/plic.h"
#include "plic/plic_driver.h"
#include "platform.h"
#include "encoding.h"
#include <string.h>
// Note that there are no assertions or bounds checking on these
// parameter values.
void volatile_memzero(uint8_t * base, unsigned int size)
{
volatile uint8_t * ptr;
for (ptr = base; ptr < (base + size); ptr++){
*ptr = 0;
}
}
void PLIC_init (
plic_instance_t * this_plic,
uintptr_t base_addr,
uint32_t num_sources,
uint32_t num_priorities
)
{
this_plic->base_addr = base_addr;
this_plic->num_sources = num_sources;
this_plic->num_priorities = num_priorities;
// Disable all interrupts (don't assume that these registers are reset).
unsigned long hart_id = read_csr(mhartid);
volatile_memzero((uint8_t*) (this_plic->base_addr +
PLIC_ENABLE_OFFSET +
(hart_id << PLIC_ENABLE_SHIFT_PER_TARGET)),
(num_sources + 8) / 8);
// Set all priorities to 0 (equal priority -- don't assume that these are reset).
volatile_memzero ((uint8_t *)(this_plic->base_addr +
PLIC_PRIORITY_OFFSET),
(num_sources + 1) << PLIC_PRIORITY_SHIFT_PER_SOURCE);
// Set the threshold to 0.
volatile plic_threshold* threshold = (plic_threshold*)
(this_plic->base_addr +
PLIC_THRESHOLD_OFFSET +
(hart_id << PLIC_THRESHOLD_SHIFT_PER_TARGET));
*threshold = 0;
}
void PLIC_set_threshold (plic_instance_t * this_plic,
plic_threshold threshold){
unsigned long hart_id = read_csr(mhartid);
volatile plic_threshold* threshold_ptr = (plic_threshold*) (this_plic->base_addr +
PLIC_THRESHOLD_OFFSET +
(hart_id << PLIC_THRESHOLD_SHIFT_PER_TARGET));
*threshold_ptr = threshold;
}
void PLIC_enable_interrupt (plic_instance_t * this_plic, plic_source source){
unsigned long hart_id = read_csr(mhartid);
volatile uint8_t * current_ptr = (volatile uint8_t *)(this_plic->base_addr +
PLIC_ENABLE_OFFSET +
(hart_id << PLIC_ENABLE_SHIFT_PER_TARGET) +
(source >> 3));
uint8_t current = *current_ptr;
current = current | ( 1 << (source & 0x7));
*current_ptr = current;
}
void PLIC_disable_interrupt (plic_instance_t * this_plic, plic_source source){
unsigned long hart_id = read_csr(mhartid);
volatile uint8_t * current_ptr = (volatile uint8_t *) (this_plic->base_addr +
PLIC_ENABLE_OFFSET +
(hart_id << PLIC_ENABLE_SHIFT_PER_TARGET) +
(source >> 3));
uint8_t current = *current_ptr;
current = current & ~(( 1 << (source & 0x7)));
*current_ptr = current;
}
void PLIC_set_priority (plic_instance_t * this_plic, plic_source source, plic_priority priority){
if (this_plic->num_priorities > 0) {
volatile plic_priority * priority_ptr = (volatile plic_priority *)
(this_plic->base_addr +
PLIC_PRIORITY_OFFSET +
(source << PLIC_PRIORITY_SHIFT_PER_SOURCE));
*priority_ptr = priority;
}
}
plic_source PLIC_claim_interrupt(plic_instance_t * this_plic){
unsigned long hart_id = read_csr(mhartid);
volatile plic_source * claim_addr = (volatile plic_source * )
(this_plic->base_addr +
PLIC_CLAIM_OFFSET +
(hart_id << PLIC_CLAIM_SHIFT_PER_TARGET));
return *claim_addr;
}
void PLIC_complete_interrupt(plic_instance_t * this_plic, plic_source source){
unsigned long hart_id = read_csr(mhartid);
volatile plic_source * claim_addr = (volatile plic_source *) (this_plic->base_addr +
PLIC_CLAIM_OFFSET +
(hart_id << PLIC_CLAIM_SHIFT_PER_TARGET));
*claim_addr = source;
}

51
FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/freedom-e-sdk/drivers/plic/plic_driver.h
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@ -1,51 +0,0 @@
// See LICENSE file for licence details
#ifndef PLIC_DRIVER_H
#define PLIC_DRIVER_H
__BEGIN_DECLS
#include "platform.h"
typedef struct __plic_instance_t
{
uintptr_t base_addr;
uint32_t num_sources;
uint32_t num_priorities;
} plic_instance_t;
typedef uint32_t plic_source;
typedef uint32_t plic_priority;
typedef uint32_t plic_threshold;
void PLIC_init (
plic_instance_t * this_plic,
uintptr_t base_addr,
uint32_t num_sources,
uint32_t num_priorities
);
void PLIC_set_threshold (plic_instance_t * this_plic,
plic_threshold threshold);
void PLIC_enable_interrupt (plic_instance_t * this_plic,
plic_source source);
void PLIC_disable_interrupt (plic_instance_t * this_plic,
plic_source source);
void PLIC_set_priority (plic_instance_t * this_plic,
plic_source source,
plic_priority priority);
plic_source PLIC_claim_interrupt(plic_instance_t * this_plic);
void PLIC_complete_interrupt(plic_instance_t * this_plic,
plic_source source);
__END_DECLS
#endif

2
FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/freedom-e-sdk/env/freedom-e300-hifive1/flash.lds vendored
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@ -17,7 +17,7 @@ PHDRS
SECTIONS
{
__stack_size = DEFINED(__stack_size) ? __stack_size : 2K;
__stack_size = DEFINED(__stack_size) ? __stack_size : 400;
.init :
{

2
FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/freedom-e-sdk/env/freedom-e300-hifive1/init.c vendored
Unescape Escape View File

@ -222,8 +222,6 @@ void _init()
use_pll(0, 0, 1, 31, 1);
uart_init(115200);
printf("core freq at %d Hz\n", (int)get_cpu_freq());
write_csr(mtvec, &trap_entry);
if (read_csr(misa) & (1 << ('F' - 'A'))) { // if F extension is present
write_csr(mstatus, MSTATUS_FS); // allow FPU instructions without trapping

5
FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/full_demo/main_full.c
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@ -196,12 +196,11 @@ TickType_t xLastExecutionTime;
static unsigned long ulLastRegTest1Value = 0, ulLastRegTest2Value = 0;
const char * const pcPassMessage = "Pass";
const char * pcStatusMessage = ".";
extern void vSendString( const char * pcString );
/* Just to stop compiler warnings. */
( void ) pvParameters;
write( STDOUT_FILENO, pcPassMessage, strlen( pcPassMessage ) );
/* Initialise xLastExecutionTime so the first call to vTaskDelayUntil()
works correctly. */
xLastExecutionTime = xTaskGetTickCount();
@ -269,7 +268,7 @@ const char * pcStatusMessage = ".";
ulLastRegTest2Value = ulRegTest2LoopCounter;
/* Write the status message to the UART. */
write( STDOUT_FILENO, pcStatusMessage, strlen( pcStatusMessage ) );
vSendString( pcStatusMessage );
}
}
/*-----------------------------------------------------------*/

29
FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/main.c
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@ -73,7 +73,7 @@
/* Set mainCREATE_SIMPLE_BLINKY_DEMO_ONLY to one to run the simple blinky demo,
or 0 to run the more comprehensive test and demo application. */
#define mainCREATE_SIMPLE_BLINKY_DEMO_ONLY 1
#define mainCREATE_SIMPLE_BLINKY_DEMO_ONLY 0
/*
* main_blinky() is used when mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is set to 1.
@ -85,17 +85,28 @@ or 0 to run the more comprehensive test and demo application. */
extern void main_full( void );
#endif /* #if mainCREATE_SIMPLE_BLINKY_DEMO_ONLY == 1 */
/* Prototypes for the standard FreeRTOS callback/hook functions implemented
within this file. See https://www.freertos.org/a00016.html */
/*
* Prototypes for the standard FreeRTOS callback/hook functions implemented
* within this file. See https://www.freertos.org/a00016.html
*/
void vApplicationMallocFailedHook( void );
void vApplicationIdleHook( void );
void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName );
void vApplicationTickHook( void );
/*
* Very simply polling write to the UART. The full demo only writes single
* characters at a time so as not to disrupt the timing of the test and demo
* tasks.
*/
void vSendString( const char * pcString );
/*-----------------------------------------------------------*/
int main( void )
{
vSendString( "Starting" );
/* The mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting is described at the top
of this file. */
#if( mainCREATE_SIMPLE_BLINKY_DEMO_ONLY == 1 )
@ -176,3 +187,15 @@ volatile uint32_t ulSetTo1ToExitFunction = 0;
__asm volatile( "NOP" );
}
}
/*-----------------------------------------------------------*/
void vSendString( const char * pcString )
{
while( *pcString != 0x00 )
{
while( UART0_REG( UART_REG_TXFIFO ) & 0x80000000 );
UART0_REG( UART_REG_TXFIFO ) = *pcString;
*pcString++;
}
}

34
FreeRTOS/Demo/RISC-V-Qemu-sifive_e-FreedomStudio/sifive-freedom-e300-hifive1.cfg
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@ -1,34 +0,0 @@
adapter_khz 10000
interface ftdi
ftdi_device_desc "Dual RS232-HS"
ftdi_vid_pid 0x0403 0x6010
ftdi_layout_init 0x0008 0x001b
ftdi_layout_signal nSRST -oe 0x0020 -data 0x0020
#Reset Stretcher logic on FE310 is ~1 second long
#This doesn't apply if you use
# ftdi_set_signal, but still good to document
#adapter_nsrst_delay 1500
set _CHIPNAME riscv
jtag newtap $_CHIPNAME cpu -irlen 5 -expected-id 0x10e31913
set _TARGETNAME $_CHIPNAME.cpu
target create $_TARGETNAME riscv -chain-position $_TARGETNAME
$_TARGETNAME configure -work-area-phys 0x80000000 -work-area-size 10000 -work-area-backup 1
flash bank onboard_spi_flash fespi 0x20000000 0 0 0 $_TARGETNAME
init
#reset -- This type of reset is not implemented yet
if {[ info exists pulse_srst]} {
ftdi_set_signal nSRST 0
ftdi_set_signal nSRST z
#Wait for the reset stretcher
#It will work without this, but
#will incur lots of delays for later commands.
sleep 1500
}
halt
flash protect 0 64 last off
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