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stm32f4: Automatically calculate dynmem start/end 

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2019-07-27 17:03:18 -04:00
parent 16616662ed
commit 7bc0a261ab
2 changed files with 17 additions and 2 deletions
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3
src/stm32f4/Makefile
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@ -16,8 +16,7 @@ CFLAGS_klipper.elf += -T $(OUT)stm32f4.ld --specs=nano.specs --specs=nosys.specs
# Add source files # Add source files
src-y += stm32f4/main.c stm32f4/clock.c stm32f4/watchdog.c stm32f4/gpio.c src-y += stm32f4/main.c stm32f4/clock.c stm32f4/watchdog.c stm32f4/gpio.c
src-y += generic/crc16_ccitt.c generic/alloc.c src-y += generic/crc16_ccitt.c generic/armcm_irq.c generic/armcm_timer.c
src-y += generic/armcm_irq.c generic/armcm_timer.c
src-y += ../lib/stm32f4/system_stm32f4xx.c src-y += ../lib/stm32f4/system_stm32f4xx.c
src-$(CONFIG_HAVE_GPIO_ADC) += stm32f4/adc.c src-$(CONFIG_HAVE_GPIO_ADC) += stm32f4/adc.c
src-$(CONFIG_HAVE_GPIO_SPI) += stm32f4/spi.c src-$(CONFIG_HAVE_GPIO_SPI) += stm32f4/spi.c

16
src/stm32f4/main.c
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@ -11,6 +11,22 @@
DECL_CONSTANT_STR("MCU", CONFIG_MCU); DECL_CONSTANT_STR("MCU", CONFIG_MCU);
// Return the start of memory available for dynamic allocations
void *
dynmem_start(void)
{
extern uint32_t _ebss;
return &_ebss;
}
// Return the end of memory available for dynamic allocations
void *
dynmem_end(void)
{
extern uint32_t _sstack;
return &_sstack;
}
void void
command_reset(uint32_t *args) command_reset(uint32_t *args)
{ {