From db71fcb94796e465096bb0fa2ff579ac7477948a Mon Sep 17 00:00:00 2001 From: Drew Barbier Date: Wed, 26 Jul 2017 09:02:40 -0500 Subject: E31 FS Project --- .../E31FPGA/vectored_interrupts/.cproject | 219 ++++++++++++++++++++ .../E31FPGA/vectored_interrupts/.gitignore | 1 + FreedomStudio/E31FPGA/vectored_interrupts/.project | 228 +++++++++++++++++++++ .../sifive-coreplexip-e31-arty.cfg | 31 +++ .../vectored_interrupts Debug.launch | 59 ++++++ 5 files changed, 538 insertions(+) create mode 100644 FreedomStudio/E31FPGA/vectored_interrupts/.cproject create mode 100644 FreedomStudio/E31FPGA/vectored_interrupts/.gitignore create mode 100644 FreedomStudio/E31FPGA/vectored_interrupts/.project create mode 100644 FreedomStudio/E31FPGA/vectored_interrupts/sifive-coreplexip-e31-arty.cfg create mode 100644 FreedomStudio/E31FPGA/vectored_interrupts/vectored_interrupts Debug.launch (limited to 'FreedomStudio/E31FPGA') diff --git a/FreedomStudio/E31FPGA/vectored_interrupts/.cproject b/FreedomStudio/E31FPGA/vectored_interrupts/.cproject new file mode 100644 index 0000000..8d8ac7e --- /dev/null +++ b/FreedomStudio/E31FPGA/vectored_interrupts/.cproject @@ -0,0 +1,219 @@ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + diff --git a/FreedomStudio/E31FPGA/vectored_interrupts/.gitignore b/FreedomStudio/E31FPGA/vectored_interrupts/.gitignore new file mode 100644 index 0000000..3df573f --- /dev/null +++ b/FreedomStudio/E31FPGA/vectored_interrupts/.gitignore @@ -0,0 +1 @@ +/Debug/ diff --git a/FreedomStudio/E31FPGA/vectored_interrupts/.project b/FreedomStudio/E31FPGA/vectored_interrupts/.project new file mode 100644 index 0000000..331760e --- /dev/null +++ b/FreedomStudio/E31FPGA/vectored_interrupts/.project @@ -0,0 +1,228 @@ + + + vectored_interrupts + + + + + + org.eclipse.cdt.managedbuilder.core.genmakebuilder + clean,full,incremental, + + + + + org.eclipse.cdt.managedbuilder.core.ScannerConfigBuilder + full,incremental, + + + + + + org.eclipse.cdt.core.cnature + org.eclipse.cdt.managedbuilder.core.managedBuildNature + org.eclipse.cdt.managedbuilder.core.ScannerConfigNature + + + + bsp + 2 + virtual:/virtual + + + bsp/.DS_Store + 1 + PARENT-3-PROJECT_LOC/bsp/.DS_Store + + + bsp/drivers + 2 + virtual:/virtual + + + bsp/env + 2 + virtual:/virtual + + + bsp/include + 2 + virtual:/virtual + + + bsp/drivers/.DS_Store + 1 + PARENT-3-PROJECT_LOC/bsp/drivers/.DS_Store + + + bsp/drivers/fe300prci + 2 + virtual:/virtual + + + bsp/drivers/plic + 2 + virtual:/virtual + + + bsp/env/.DS_Store + 1 + PARENT-3-PROJECT_LOC/bsp/env/.DS_Store + + + bsp/env/coreplexip-arty.h + 1 + PARENT-3-PROJECT_LOC/bsp/env/coreplexip-arty.h + + + bsp/env/coreplexip-e31-arty + 2 + virtual:/virtual + + + bsp/env/encoding.h + 1 + PARENT-3-PROJECT_LOC/bsp/env/encoding.h + + + bsp/env/start.S + 1 + PARENT-3-PROJECT_LOC/bsp/env/start.S + + + bsp/env/ventry.S + 1 + PARENT-3-PROJECT_LOC/bsp/env/ventry.S + + + bsp/include/.DS_Store + 1 + PARENT-3-PROJECT_LOC/bsp/include/.DS_Store + + + bsp/include/sifive + 2 + virtual:/virtual + + + bsp/drivers/fe300prci/fe300prci_driver.c + 1 + PARENT-3-PROJECT_LOC/bsp/drivers/fe300prci/fe300prci_driver.c + + + bsp/drivers/fe300prci/fe300prci_driver.h + 1 + PARENT-3-PROJECT_LOC/bsp/drivers/fe300prci/fe300prci_driver.h + + + bsp/drivers/plic/plic_driver.c + 1 + PARENT-3-PROJECT_LOC/bsp/drivers/plic/plic_driver.c + + + bsp/drivers/plic/plic_driver.h + 1 + PARENT-3-PROJECT_LOC/bsp/drivers/plic/plic_driver.h + + + bsp/env/coreplexip-e31-arty/flash.lds + 1 + PARENT-3-PROJECT_LOC/bsp/env/coreplexip-e31-arty/flash.lds + + + bsp/env/coreplexip-e31-arty/init.c + 1 + PARENT-3-PROJECT_LOC/bsp/env/coreplexip-e31-arty/init.c + + + bsp/env/coreplexip-e31-arty/openocd.cfg + 1 + PARENT-3-PROJECT_LOC/bsp/env/coreplexip-e31-arty/openocd.cfg + + + bsp/env/coreplexip-e31-arty/platform.h + 1 + PARENT-3-PROJECT_LOC/bsp/env/coreplexip-e31-arty/platform.h + + + bsp/env/coreplexip-e31-arty/scratchpad.lds + 1 + PARENT-3-PROJECT_LOC/bsp/env/coreplexip-e31-arty/scratchpad.lds + + + bsp/env/coreplexip-e31-arty/settings.mk + 1 + PARENT-3-PROJECT_LOC/bsp/env/coreplexip-e31-arty/settings.mk + + + bsp/include/sifive/bits.h + 1 + PARENT-3-PROJECT_LOC/bsp/include/sifive/bits.h + + + bsp/include/sifive/const.h + 1 + PARENT-3-PROJECT_LOC/bsp/include/sifive/const.h + + + bsp/include/sifive/devices + 2 + virtual:/virtual + + + bsp/include/sifive/sections.h + 1 + PARENT-3-PROJECT_LOC/bsp/include/sifive/sections.h + + + bsp/include/sifive/smp.h + 1 + PARENT-3-PROJECT_LOC/bsp/include/sifive/smp.h + + + bsp/include/sifive/devices/aon.h + 1 + PARENT-3-PROJECT_LOC/bsp/include/sifive/devices/aon.h + + + bsp/include/sifive/devices/clint.h + 1 + PARENT-3-PROJECT_LOC/bsp/include/sifive/devices/clint.h + + + bsp/include/sifive/devices/gpio.h + 1 + PARENT-3-PROJECT_LOC/bsp/include/sifive/devices/gpio.h + + + bsp/include/sifive/devices/otp.h + 1 + PARENT-3-PROJECT_LOC/bsp/include/sifive/devices/otp.h + + + bsp/include/sifive/devices/plic.h + 1 + PARENT-3-PROJECT_LOC/bsp/include/sifive/devices/plic.h + + + bsp/include/sifive/devices/prci.h + 1 + PARENT-3-PROJECT_LOC/bsp/include/sifive/devices/prci.h + + + bsp/include/sifive/devices/pwm.h + 1 + PARENT-3-PROJECT_LOC/bsp/include/sifive/devices/pwm.h + + + bsp/include/sifive/devices/spi.h + 1 + PARENT-3-PROJECT_LOC/bsp/include/sifive/devices/spi.h + + + bsp/include/sifive/devices/uart.h + 1 + PARENT-3-PROJECT_LOC/bsp/include/sifive/devices/uart.h + + + diff --git a/FreedomStudio/E31FPGA/vectored_interrupts/sifive-coreplexip-e31-arty.cfg b/FreedomStudio/E31FPGA/vectored_interrupts/sifive-coreplexip-e31-arty.cfg new file mode 100644 index 0000000..8b382dc --- /dev/null +++ b/FreedomStudio/E31FPGA/vectored_interrupts/sifive-coreplexip-e31-arty.cfg @@ -0,0 +1,31 @@ +# JTAG adapter setup +adapter_khz 10000 + +interface ftdi +ftdi_device_desc "Olimex OpenOCD JTAG ARM-USB-TINY-H" +ftdi_vid_pid 0x15ba 0x002a + +ftdi_layout_init 0x0808 0x0a1b +ftdi_layout_signal nSRST -oe 0x0200 +#ftdi_layout_signal nTRST -data 0x0100 -oe 0x0100 +ftdi_layout_signal LED -data 0x0800 + +set _CHIPNAME riscv +jtag newtap $_CHIPNAME cpu -irlen 5 -expected-id 0x20000001 + +set _TARGETNAME $_CHIPNAME.cpu + +target create $_TARGETNAME.0 riscv -chain-position $_TARGETNAME +$_TARGETNAME.0 configure -work-area-phys 0x80000000 -work-area-size 10000 -work-area-backup 1 + +# Un-comment these two flash lines if you have a SPI flash and want to write +# it. +flash bank spi0 fespi 0x40000000 0 0 0 $_TARGETNAME.0 0x20004000 +init +if {[ info exists pulse_srst]} { + ftdi_set_signal nSRST 0 + ftdi_set_signal nSRST z +} +halt +flash protect 0 64 last off +echo "Ready for Remote Connections" diff --git a/FreedomStudio/E31FPGA/vectored_interrupts/vectored_interrupts Debug.launch b/FreedomStudio/E31FPGA/vectored_interrupts/vectored_interrupts Debug.launch new file mode 100644 index 0000000..73f5aaa --- /dev/null +++ b/FreedomStudio/E31FPGA/vectored_interrupts/vectored_interrupts Debug.launch @@ -0,0 +1,59 @@ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + -- cgit v1.2.3 From e008ed03839d46388f184206d634021fd083dc78 Mon Sep 17 00:00:00 2001 From: Drew Barbier Date: Wed, 26 Jul 2017 14:55:16 -0500 Subject: only save/restore "caller" registers on trap entry --- .../vectored_interrupts/vectored_interrupts.c | 216 +++++++++++++++++++++ 1 file changed, 216 insertions(+) create mode 100644 FreedomStudio/E31FPGA/vectored_interrupts/vectored_interrupts.c (limited to 'FreedomStudio/E31FPGA') diff --git a/FreedomStudio/E31FPGA/vectored_interrupts/vectored_interrupts.c b/FreedomStudio/E31FPGA/vectored_interrupts/vectored_interrupts.c new file mode 100644 index 0000000..8958105 --- /dev/null +++ b/FreedomStudio/E31FPGA/vectored_interrupts/vectored_interrupts.c @@ -0,0 +1,216 @@ +// See LICENSE for license details. + +#include +#include +#include "platform.h" +#include +#include "plic/plic_driver.h" +#include "encoding.h" +#include + +#ifndef _SIFIVE_COREPLEXIP_ARTY_H +#error 'global_interrupts' demo only supported for Coreplex IP Eval Kits +#endif + +// Global Instance data for the PLIC +// for use by the PLIC Driver. +plic_instance_t g_plic; + +// Structures for registering different interrupt handlers +// for different parts of the application. +typedef void (*interrupt_function_ptr_t) (void); +//array of function pointers which contains the PLIC +//interrupt handlers +interrupt_function_ptr_t g_ext_interrupt_handlers[PLIC_NUM_INTERRUPTS]; + +const char * instructions_msg = " \ +\n\ + SIFIVE, INC.\n\ +E31/E51 Coreplex IP Eval Kit 'vectored_interrupts' demo. \n\ +\n\ +This demo demonstrates Vectored Interrupts capabilities of\n\ +the E31/E51 Coreplex. The vector table is defined in \n\ +bsp/env/ventry.S \n\ +Button 0 is a global external interrupt routed to the PLIC.\n\ +Button 1 is a local interrupt.\n\ +\n"; + +void print_instructions() { + + write (STDOUT_FILENO, instructions_msg, strlen(instructions_msg)); + +} + +void set_timer() { + + 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 + 1*RTC_FREQ; + *mtimecmp = then; + + set_csr(mie, MIP_MTIP); +} + +/*Entry Point for Machine Timer Interrupt Handler*/ +/*called from bsp/env/ventry.s */ +void handle_m_time_interrupt(){ + static uint32_t onoff=1; + + clear_csr(mie, MIP_MTIP); + + // Set Green LED + if(onoff) { + GPIO_REG(GPIO_OUTPUT_VAL) |= (0x1 << GREEN_LED_OFFSET) ; + onoff=0; + }else { + GPIO_REG(GPIO_OUTPUT_VAL) &= ~((0x1 << GREEN_LED_OFFSET)) ; + onoff=1; + } + set_timer(); + + //re-enable button1 irq + set_csr(mie, MIP_MLIP(LOCAL_INT_BTN_1)); + +} + +/*Synchronous Trap Handler*/ +/*called from bsp/env/ventry.s */ +void handle_sync_trap(uintptr_t mcause, uintptr_t epc ) { + write(1, "vUnhandled Trap:\n", 16); + _exit(1 + mcause); +} + +/*Entry Point for PLIC Interrupt Handler*/ +/*called from bsp/env/ventry.s */ +void handle_m_external_interrupt(){ + printf("In PLIC handler\n"); + 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); +} + +//default empty PLIC handler +void invalid_global_isr() { + printf("Unexpected global interrupt!\n"); +} + +/* b0 global interrupt isr */ +/*called from handle_m_external_interrupt */ +void button_0_handler() { + static uint32_t onoff=1; + // Set Green LED + + printf("In Button 0 handler\n"); + + if(onoff) { + GPIO_REG(GPIO_OUTPUT_VAL) |= (0x1 << BLUE_LED_OFFSET) ; + onoff=0; + }else { + GPIO_REG(GPIO_OUTPUT_VAL) &= ~((0x1 << BLUE_LED_OFFSET)) ; + onoff=1; + } + + //clear irq - interrupt pending register is write 1 to clear + GPIO_REG(GPIO_FALL_IP) |= (1< Date: Wed, 26 Jul 2017 15:04:16 -0500 Subject: E31 vectored_interrupt.c as a linked file --- FreedomStudio/E31FPGA/vectored_interrupts/.project | 5 + .../vectored_interrupts/vectored_interrupts.c | 216 --------------------- 2 files changed, 5 insertions(+), 216 deletions(-) delete mode 100644 FreedomStudio/E31FPGA/vectored_interrupts/vectored_interrupts.c (limited to 'FreedomStudio/E31FPGA') diff --git a/FreedomStudio/E31FPGA/vectored_interrupts/.project b/FreedomStudio/E31FPGA/vectored_interrupts/.project index 331760e..f34dc51 100644 --- a/FreedomStudio/E31FPGA/vectored_interrupts/.project +++ b/FreedomStudio/E31FPGA/vectored_interrupts/.project @@ -29,6 +29,11 @@ 2 virtual:/virtual + + vectored_interrupts.c + 1 + PARENT-3-PROJECT_LOC/software/vectored_interrupts/vectored_interrupts.c + bsp/.DS_Store 1 diff --git a/FreedomStudio/E31FPGA/vectored_interrupts/vectored_interrupts.c b/FreedomStudio/E31FPGA/vectored_interrupts/vectored_interrupts.c deleted file mode 100644 index 8958105..0000000 --- a/FreedomStudio/E31FPGA/vectored_interrupts/vectored_interrupts.c +++ /dev/null @@ -1,216 +0,0 @@ -// See LICENSE for license details. - -#include -#include -#include "platform.h" -#include -#include "plic/plic_driver.h" -#include "encoding.h" -#include - -#ifndef _SIFIVE_COREPLEXIP_ARTY_H -#error 'global_interrupts' demo only supported for Coreplex IP Eval Kits -#endif - -// Global Instance data for the PLIC -// for use by the PLIC Driver. -plic_instance_t g_plic; - -// Structures for registering different interrupt handlers -// for different parts of the application. -typedef void (*interrupt_function_ptr_t) (void); -//array of function pointers which contains the PLIC -//interrupt handlers -interrupt_function_ptr_t g_ext_interrupt_handlers[PLIC_NUM_INTERRUPTS]; - -const char * instructions_msg = " \ -\n\ - SIFIVE, INC.\n\ -E31/E51 Coreplex IP Eval Kit 'vectored_interrupts' demo. \n\ -\n\ -This demo demonstrates Vectored Interrupts capabilities of\n\ -the E31/E51 Coreplex. The vector table is defined in \n\ -bsp/env/ventry.S \n\ -Button 0 is a global external interrupt routed to the PLIC.\n\ -Button 1 is a local interrupt.\n\ -\n"; - -void print_instructions() { - - write (STDOUT_FILENO, instructions_msg, strlen(instructions_msg)); - -} - -void set_timer() { - - 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 + 1*RTC_FREQ; - *mtimecmp = then; - - set_csr(mie, MIP_MTIP); -} - -/*Entry Point for Machine Timer Interrupt Handler*/ -/*called from bsp/env/ventry.s */ -void handle_m_time_interrupt(){ - static uint32_t onoff=1; - - clear_csr(mie, MIP_MTIP); - - // Set Green LED - if(onoff) { - GPIO_REG(GPIO_OUTPUT_VAL) |= (0x1 << GREEN_LED_OFFSET) ; - onoff=0; - }else { - GPIO_REG(GPIO_OUTPUT_VAL) &= ~((0x1 << GREEN_LED_OFFSET)) ; - onoff=1; - } - set_timer(); - - //re-enable button1 irq - set_csr(mie, MIP_MLIP(LOCAL_INT_BTN_1)); - -} - -/*Synchronous Trap Handler*/ -/*called from bsp/env/ventry.s */ -void handle_sync_trap(uintptr_t mcause, uintptr_t epc ) { - write(1, "vUnhandled Trap:\n", 16); - _exit(1 + mcause); -} - -/*Entry Point for PLIC Interrupt Handler*/ -/*called from bsp/env/ventry.s */ -void handle_m_external_interrupt(){ - printf("In PLIC handler\n"); - 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); -} - -//default empty PLIC handler -void invalid_global_isr() { - printf("Unexpected global interrupt!\n"); -} - -/* b0 global interrupt isr */ -/*called from handle_m_external_interrupt */ -void button_0_handler() { - static uint32_t onoff=1; - // Set Green LED - - printf("In Button 0 handler\n"); - - if(onoff) { - GPIO_REG(GPIO_OUTPUT_VAL) |= (0x1 << BLUE_LED_OFFSET) ; - onoff=0; - }else { - GPIO_REG(GPIO_OUTPUT_VAL) &= ~((0x1 << BLUE_LED_OFFSET)) ; - onoff=1; - } - - //clear irq - interrupt pending register is write 1 to clear - GPIO_REG(GPIO_FALL_IP) |= (1<