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https://github.com/kelvinlawson/atomthreads.git
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Added rudimentary QEMU board for running the test suite binaries
This commit is contained in:
Tido Klaassen
@@ -134,6 +134,7 @@ endif
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# Target specific version libopencm3
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LDLIBS += -l$(LIBNAME)
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ifneq ($(BOARD),qemu)
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## Flags for newlibc.
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# This uses the version of newlib optimised for size and without libnosys.
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# This usually is the version of newlib you want to use, although it has some
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@@ -150,6 +151,11 @@ LDLIBS += -Wl,--start-group -lc_nano -lgcc -Wl,--end-group
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# the top end of memory while the threads' stacks are positioned inside
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# the BSS.
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#LDLIBS += -Wl,--start-group -lc_nano -lgcc -lnosys -Wl,--end-group
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else
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# Special LDLIBS for qemu target to enable semi-hosting.
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# TODO: Check if this is also useful for real hardware
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LDLIBS += -Wl,--start-group --specs=rdimon.specs -lc -lrdimon -lgcc -Wl,--end-group
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endif
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# All
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.PHONY: all
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14
ports/cortex-m/boards/qemu/Makefile.include
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14
ports/cortex-m/boards/qemu/Makefile.include
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@@ -0,0 +1,14 @@
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TARGET ?= stm32f103rb
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LIBNAME ?= opencm3_stm32f1
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DEFS ?= -DSTM32F1
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DEFS += -DSTD_CON=USART2
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DEFS += -DMST_SIZE=0x400
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FP_FLAGS ?= -msoft-float
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ARCH_FLAGS ?= -mthumb -mcpu=cortex-m3 $(FP_FLAGS) -mfix-cortex-m3-ldrd
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OOCD ?= openocd
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OOCD_INTERFACE ?= stlink-v2-1
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OOCD_BOARD ?= st_nucleo_f103rb
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objs += board_setup.o
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21
ports/cortex-m/boards/qemu/README.md
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21
ports/cortex-m/boards/qemu/README.md
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@@ -0,0 +1,21 @@
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This board is a quick n' dirty copy of nucleo-f103rb, stripped down to run
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atomthread's test suite on qemu. Since it must be linked against newlib's
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librdimon to enable semi-hosting, the stubs provided in the common directory
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can not be used. Do not be surprised if malloc etc. do not work as expected.
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The [GNU ARM Eclipse](http://gnuarmeclipse.livius.net/blog/) project maintains
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a fork of qemu that is able to emulate a Nucleo-F103RB board. Check out their
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gnuarmeclipse-dev branch from [here]
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(http://sourceforge.net/p/gnuarmeclipse/qemu/ci/gnuarmeclipse-dev/tree/).
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At time of writing (2015-07-13), I had to run configure with
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`--disable-werror --target-list="gnuarmeclipse-softmmu"` to build
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a usable target.
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After installing you can use it to run the test binaries like this:
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```
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qemu-system-gnuarmeclipse -nographic -monitor null -serial stdio \
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-semihosting --semihosting-config target=native \
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--machine NUCLEO-F103RB --kernel build/kern1.elf --verbose
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```
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119
ports/cortex-m/boards/qemu/board_setup.c
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119
ports/cortex-m/boards/qemu/board_setup.c
Normal file
@@ -0,0 +1,119 @@
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/*
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* Copyright (c) 2015, Tido Klaassen. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. No personal names or organizations' names associated with the
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* Atomthreads project may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdbool.h>
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#include <libopencm3/stm32/rcc.h>
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#include <libopencm3/stm32/gpio.h>
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#include <libopencm3/stm32/usart.h>
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#include <libopencm3/cm3/systick.h>
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#include <libopencm3/cm3/cortex.h>
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#include <libopencm3/cm3/nvic.h>
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#include "atomport.h"
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/**
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* initialise and start SysTick counter. This will trigger the
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* sys_tick_handler() periodically once interrupts have been enabled
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* by archFirstThreadRestore(). Since we did not change the clock source,
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* the MCU is still running from 16MHz PIOSC
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*/
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static void systick_setup(void)
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{
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systick_set_frequency(SYSTEM_TICKS_PER_SEC, 16000000);
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systick_interrupt_enable();
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systick_counter_enable();
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}
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/**
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* Set up the core clock to something other than the internal 16MHz PIOSC.
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* Make sure that you use the same clock frequency in systick_setup().
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*/
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/**
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* Set up user LED and provide function for toggling it. This is for
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* use by the test suite programs
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*/
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static void test_led_setup(void)
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{
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/* LED is connected to GPIO5 on port A */
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rcc_periph_clock_enable(RCC_GPIOA);
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gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
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GPIO_CNF_OUTPUT_PUSHPULL, GPIO5);
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gpio_set(GPIOA, GPIO5);
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}
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void test_led_toggle(void)
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{
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static bool on = true;
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/* qemu does not seem to know how to handle gpio_toggle() */
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if(on){
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gpio_clear(GPIOA, GPIO5);
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} else {
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gpio_set(GPIOA, GPIO5);
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}
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on = !on;
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}
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/**
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* Callback from your main program to set up the board's hardware before
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* the kernel is started.
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*/
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extern void initialise_monitor_handles(void);
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int board_setup(void)
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{
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/* initialise semi-hosting */
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initialise_monitor_handles();
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/* Disable interrupts. This makes sure that the sys_tick_handler will
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* not be called before the first thread has been started.
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* Interrupts will be enabled by archFirstThreadRestore().
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*/
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cm_mask_interrupts(true);
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/* configure user LED*/
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test_led_setup();
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/* initialise SysTick counter */
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systick_setup();
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/* Set exception priority levels. Make PendSv the lowest priority and
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* SysTick the second to lowest
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*/
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nvic_set_priority(NVIC_PENDSV_IRQ, 0xFF);
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nvic_set_priority(NVIC_SYSTICK_IRQ, 0xFE);
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return 0;
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}
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