forked from M-Labs/artiq
runtime: biprocessor support (incomplete, WIP)
This commit is contained in:
parent
277e038569
commit
cbdc1ba46f
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@ -1,9 +1,21 @@
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include $(MSCDIR)/software/common.mak
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BOARD=papilio_pro
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SERIAL=/dev/ttyUSB1
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OBJECTS_SERVICES=exception_jmp.o exceptions.o rtio.o dds.o
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OBJECTS=isr.o elf_loader.o services.o comm_serial.o test_mode.o main.o
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OBJECTS=isr.o elf_loader.o kernelcpu.o exception_jmp.o exceptions.o services.o comm_serial.o gpio.o rtio.o dds.o ksupport_data.o test_mode.o main.o
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UNIPROCESSOR := $(shell echo -e "\#include <generated/csr.h>\nCSR_KERNEL_CPU_BASE" | $(CC_normal) $(CFLAGS) -E - | tail -n 1 | grep -c CSR_KERNEL_CPU_BASE)
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ifeq ($(UNIPROCESSOR),0)
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OBJECTS += kernelcpu.o ksupport_data.o
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CFLAGS += -DARTIQ_BIPROCESSOR
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SERVICE_TABLE_INPUT = ksupport.elf
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else
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ifeq ($(UNIPROCESSOR),1)
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OBJECTS += $(OBJECTS_SERVICES)
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else
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$(error failed to determine uniprocessor/biprocessor build)
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endif
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endif
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all: runtime.bin
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@ -30,17 +42,22 @@ runtime.elf: $(OBJECTS) libs
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-lbase -lcompiler-rt
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@chmod -x $@
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ksupport.elf: ksupport.o
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ksupport.elf: $(OBJECTS_SERVICES) ksupport.o
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$(LD) $(LDFLAGS) \
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-T ksupport.ld \
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-N -o $@ \
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$(MSCDIR)/software/libbase/crt0-$(CPU).o \
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ksupport.o
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$^
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@chmod -x $@
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ksupport_data.o: ksupport.bin
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$(LD) -r -b binary -o $@ $<
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service_table.h: $(SERVICE_TABLE_INPUT)
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@echo " GEN " $@ && ./gen_service_table.py $(SERVICE_TABLE_INPUT) > $@
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services.c: service_table.h
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main.o: main.c
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$(compile-dep)
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@ -54,15 +71,9 @@ libs:
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$(MAKE) -C $(MSCDIR)/software/libcompiler-rt
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$(MAKE) -C $(MSCDIR)/software/libbase
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load: runtime.bin
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$(MAKE) -C $(MSCDIR)/tools
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$(MSCDIR)/tools/flterm --port $(SERIAL) --kernel runtime.bin
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flash: runtime.fbi
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$(MSCDIR)/flash_extra.py $(BOARD) runtime.fbi 0x70000
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clean:
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$(RM) $(OBJECTS) $(OBJECTS:.o=.d) runtime.elf runtime.bin runtime.fbi .*~ *~
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$(RM) ksupport.d ksupport.o ksupport.elf ksupport.bin
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$(RM) $(OBJECTS) $(OBJECTS:.o=.d) $(OBJECTS_SERVICES) $(OBJECTS_SERVICES:.o=.d)
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$(RM) runtime.elf runtime.bin runtime.fbi .*~ *~
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$(RM) service_table.h ksupport.d ksupport.o ksupport.elf ksupport.bin
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.PHONY: all main.o clean libs load
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@ -151,7 +151,12 @@ static void receive_and_run_kernel(kernel_runner run_kernel)
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send_char(MSGTYPE_KERNEL_EXCEPTION);
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send_int(eid);
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for(i=0;i<3;i++)
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#ifdef ARTIQ_BIPROCESSOR
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#warning TODO
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send_llint(0LL);
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#else
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send_llint(exception_params[i]);
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#endif
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break;
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case KERNEL_RUN_STARTUP_FAILED:
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send_char(MSGTYPE_KERNEL_STARTUP_FAILED);
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@ -172,9 +177,16 @@ void comm_serve(object_loader load_object, kernel_runner run_kernel)
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if(msgtype == MSGTYPE_REQUEST_IDENT) {
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send_char(MSGTYPE_IDENT);
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send_int(0x41524f52); /* "AROR" - ARTIQ runtime on OpenRISC */
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#ifdef ARTIQ_BIPROCESSOR
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#warning TODO
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send_int(125*1000*1000);
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send_char(0);
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send_char(1);
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#else
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send_int(rtio_frequency_i_read());
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send_char(rtio_frequency_fn_read());
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send_char(rtio_frequency_fd_read());
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#endif
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} else if(msgtype == MSGTYPE_LOAD_OBJECT)
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receive_and_load_object(load_object);
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else if(msgtype == MSGTYPE_RUN_KERNEL)
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@ -253,8 +265,12 @@ int comm_rpc(int rpc_num, ...)
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eid = receive_int();
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retval = receive_int();
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#ifdef ARTIQ_BIPROCESSOR
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#warning TODO
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#else
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if(eid != EID_NONE)
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exception_raise(eid);
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#endif
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return retval;
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}
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@ -1,5 +1,9 @@
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#include <generated/csr.h>
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#include "exceptions.h"
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#ifndef ARTIQ_BIPROCESSOR
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#include "comm.h"
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#endif
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#define MAX_EXCEPTION_CONTEXTS 64
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@ -45,7 +49,11 @@ void exception_raise_params(int id,
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exception_params[2] = p2;
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exception_longjmp(exception_contexts[--ec_top].jb);
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} else {
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#ifdef ARTIQ_BIPROCESSOR
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#warning TODO
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#else
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comm_log("ERROR: uncaught exception, ID=%d\n", id);
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#endif
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while(1);
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}
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}
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@ -0,0 +1,62 @@
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#!/usr/bin/env python3
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import sys
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services = [
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("syscalls", [
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("rpc", "comm_rpc"),
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("rtio_oe", "rtio_oe"),
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("rtio_set", "rtio_set"),
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("rtio_get_counter", "rtio_get_counter"),
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("rtio_get", "rtio_get"),
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("rtio_pileup_count", "rtio_pileup_count"),
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("dds_phase_clear_en", "dds_phase_clear_en"),
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("dds_program", "dds_program"),
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]),
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("eh", [
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("setjmp", "exception_setjmp"),
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("push", "exception_push"),
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("pop", "exception_pop"),
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("getid", "exception_getid"),
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("raise", "exception_raise"),
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])
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]
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def print_uniprocessor():
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for name, contents in services:
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print("static const struct symbol {}[] = {{".format(name))
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for name, value in contents:
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print(" {{\"{}\", {}}},".format(name, value))
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print(" {NULL, NULL}")
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print("};")
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def print_biprocessor(ksupport_elf_filename):
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from elftools.elf.elffile import ELFFile
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with open(ksupport_elf_filename, "rb") as f:
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elf = ELFFile(f)
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symtab = elf.get_section_by_name(b".symtab")
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symbols = {symbol.name: symbol.entry.st_value
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for symbol in symtab.iter_symbols()}
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for name, contents in services:
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print("static const struct symbol {}[] = {{".format(name))
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for name, value in contents:
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print(" {{\"{}\", (void *)0x{:08x}}},"
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.format(name, symbols[bytes(value, "ascii")]))
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print(" {NULL, NULL}")
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print("};")
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def main():
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if len(sys.argv) == 1:
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print_uniprocessor()
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elif len(sys.argv) == 2:
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print_biprocessor(sys.argv[1])
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else:
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print("Incorrect number of command line arguments")
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sys.exit(1)
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if __name__ == "__main__":
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main()
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@ -1,14 +0,0 @@
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#include <generated/csr.h>
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#include "gpio.h"
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void gpio_set(int channel, int value)
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{
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static int csr_value;
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if(value)
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csr_value |= 1 << channel;
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else
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csr_value &= ~(1 << channel);
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leds_out_write(csr_value);
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}
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@ -1,6 +0,0 @@
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#ifndef __GPIO_H
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#define __GPIO_H
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void gpio_set(int channel, int value);
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#endif /* __GPIO_H */
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@ -1,20 +1,19 @@
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#include <generated/csr.h>
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#ifdef CSR_KERNEL_CPU_BASE
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#include <stdio.h>
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#include <string.h>
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#include <system.h>
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#include <generated/csr.h>
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#include "kernelcpu.h"
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extern char _binary_ksupport_bin_start;
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extern char _binary_ksupport_bin_end;
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void kernelcpu_start(void)
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void kernelcpu_start(void *addr)
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{
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memcpy((void *)KERNELCPU_EXEC_ADDRESS, &_binary_ksupport_bin_start,
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&_binary_ksupport_bin_end - &_binary_ksupport_bin_start);
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KERNELCPU_MAILBOX = (unsigned int)addr;
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flush_l2_cache();
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kernel_cpu_reset_write(0);
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}
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@ -23,5 +22,3 @@ void kernelcpu_stop(void)
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{
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kernel_cpu_reset_write(1);
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}
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#endif /* CSR_KERNEL_CPU_BASE */
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@ -4,11 +4,11 @@
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#include <hw/common.h>
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#define KERNELCPU_EXEC_ADDRESS 0x40020000
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#define KERNELCPU_KMAIN_ADDRESS 0x40022000
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#define KERNELCPU_PAYLOAD_ADDRESS 0x40024000
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#define KERNELCPU_MAILBOX MMPTR(0xd0000000)
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void kernelcpu_start(void);
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void kernelcpu_start(void *addr);
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void kernelcpu_stop(void);
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#endif /* __KERNELCPU_H */
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@ -1,3 +1,9 @@
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#include "kernelcpu.h"
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#include "exceptions.h"
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#include "comm.h"
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#include "rtio.h"
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#include "dds.h"
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void exception_handler(unsigned long vect, unsigned long *sp);
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void exception_handler(unsigned long vect, unsigned long *sp)
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{
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for(;;);
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}
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extern void kmain(void);
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typedef void (*kernel_function)(void);
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int main(void);
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int main(void)
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{
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kmain();
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/* TODO: report end of kernel to comm CPU */
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kernel_function k;
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void *jb;
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k = (kernel_function)KERNELCPU_MAILBOX;
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jb = exception_push();
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if(exception_setjmp(jb))
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KERNELCPU_MAILBOX = KERNEL_RUN_EXCEPTION;
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else {
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dds_init();
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rtio_init();
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k();
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exception_pop(1);
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KERNELCPU_MAILBOX = KERNEL_RUN_FINISHED;
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}
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while(1);
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}
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int comm_rpc(int rpc_num, ...);
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int comm_rpc(int rpc_num, ...)
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{
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/* TODO */
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return 0;
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}
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@ -4,15 +4,12 @@ ENTRY(_start)
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INCLUDE generated/regions.ld
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/* First 128K of main memory are reserved for runtime code/data
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* then comes kernel memory. First 8K of kernel memory are for support code.
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* then comes kernel memory. First 16K of kernel memory are for support code.
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*/
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MEMORY {
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ksupport : ORIGIN = 0x40020000, LENGTH = 0x2000
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ksupport : ORIGIN = 0x40020000, LENGTH = 0x4000
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}
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/* Then comes the payload. */
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PROVIDE(kmain = ORIGIN(ksupport) + LENGTH(ksupport));
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/* On biprocessor systems, kernel stack is at the end of main RAM,
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* before the runtime stack. Leave 1M for runtime stack.
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*/
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@ -12,10 +12,7 @@ MEMORY {
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/* Kernel memory space start right after the runtime,
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* and ends before the runtime stack.
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*/
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PROVIDE(_kmem = 0x40020000);
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/* Runtime stack is always at the end of main_ram.
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* Runtime stack is always at the end of main_ram.
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* This stack is shared with the kernel on uniprocessor systems.
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*/
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PROVIDE(_fstack = 0x40000000 + LENGTH(main_ram) - 4);
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@ -55,14 +55,12 @@ static int symtab_add(const char *name, void *target)
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return 1;
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}
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extern int _kmem;
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static int load_object(void *buffer, int length)
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{
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symtab_init();
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return load_elf(
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resolve_service_symbol, symtab_add,
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buffer, length, &_kmem, 2*1024*1024);
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buffer, length, (void *)KERNELCPU_PAYLOAD_ADDRESS, 4*1024*1024);
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}
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typedef void (*kernel_function)(void);
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@ -70,7 +68,9 @@ typedef void (*kernel_function)(void);
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static int run_kernel(const char *kernel_name, int *eid)
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{
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kernel_function k;
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#ifndef ARTIQ_BIPROCESSOR
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void *jb;
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#endif
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k = find_symbol(symtab, kernel_name);
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if(k == NULL) {
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@ -78,17 +78,32 @@ static int run_kernel(const char *kernel_name, int *eid)
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return KERNEL_RUN_STARTUP_FAILED;
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}
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#ifdef ARTIQ_BIPROCESSOR
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kernelcpu_start(k);
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*eid = 0;
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while(1) {
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unsigned int r;
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r = KERNELCPU_MAILBOX;
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if(r < 0x40000000) {
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kernelcpu_stop();
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return r;
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}
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}
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#else
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jb = exception_push();
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if(exception_setjmp(jb)) {
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*eid = exception_getid();
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return KERNEL_RUN_EXCEPTION;
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} else {
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dds_init();
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rtio_init();
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flush_cpu_icache();
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k();
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exception_pop(1);
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return KERNEL_RUN_FINISHED;
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}
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#endif
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}
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static void blink_led(void)
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@ -131,7 +146,7 @@ int main(void)
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irq_setie(1);
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uart_init();
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#ifdef CSR_KERNEL_CPU_BASE
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#ifdef ARTIQ_BIPROCESSOR
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puts("ARTIQ runtime built "__DATE__" "__TIME__" for biprocessor systems\n");
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#else
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puts("ARTIQ runtime built "__DATE__" "__TIME__" for uniprocessor systems\n");
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@ -143,7 +158,6 @@ int main(void)
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test_main();
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} else {
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puts("Entering regular mode.");
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dds_init();
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comm_serve(load_object, run_kernel);
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}
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return 0;
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@ -0,0 +1,19 @@
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static const struct symbol syscalls[] = {
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{"rpc", (void *)0x40021ab0},
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{"rtio_oe", (void *)0x40021478},
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{"rtio_set", (void *)0x400214d4},
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{"rtio_get_counter", (void *)0x400214a0},
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{"rtio_get", (void *)0x400215ec},
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{"rtio_pileup_count", (void *)0x400216f4},
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{"dds_phase_clear_en", (void *)0x400218a4},
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{"dds_program", (void *)0x40021960},
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{NULL, NULL}
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};
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static const struct symbol eh[] = {
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{"setjmp", (void *)0x40021248},
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{"push", (void *)0x400213c8},
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{"pop", (void *)0x400212c0},
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{"getid", (void *)0x400212e8},
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{"raise", (void *)0x4002139c},
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{NULL, NULL}
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};
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@ -2,33 +2,12 @@
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#include "elf_loader.h"
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#include "comm.h"
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#include "gpio.h"
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#include "rtio.h"
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#include "dds.h"
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#include "exceptions.h"
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#include "services.h"
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static const struct symbol syscalls[] = {
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{"rpc", comm_rpc},
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{"gpio_set", gpio_set},
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{"rtio_oe", rtio_oe},
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{"rtio_set", rtio_set},
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{"rtio_get_counter", rtio_get_counter},
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{"rtio_get", rtio_get},
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{"rtio_pileup_count", rtio_pileup_count},
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{"dds_phase_clear_en", dds_phase_clear_en},
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{"dds_program", dds_program},
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{NULL, NULL}
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};
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static const struct symbol eh[] = {
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{"setjmp", exception_setjmp},
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{"push", exception_push},
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{"pop", exception_pop},
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{"getid", exception_getid},
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{"raise", exception_raise},
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{NULL, NULL}
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};
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#include "service_table.h"
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wimplicit-int"
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||||
|
|
|
@ -11,6 +11,17 @@
|
|||
#include "rtio.h"
|
||||
#include "dds.h"
|
||||
|
||||
#ifdef ARTIQ_BIPROCESSOR
|
||||
|
||||
#warning TODO
|
||||
|
||||
void test_main(void)
|
||||
{
|
||||
printf("Not implemented yet for biprocessor systems\n");
|
||||
}
|
||||
|
||||
#else
|
||||
|
||||
static void leds(char *value)
|
||||
{
|
||||
char *c;
|
||||
|
@ -341,3 +352,5 @@ void test_main(void)
|
|||
do_command(buffer);
|
||||
}
|
||||
}
|
||||
|
||||
#endif /* ARTIQ_BIPROCESSOR */
|
||||
|
|
Loading…
Reference in New Issue