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stm32l4: dfumode style fixes

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This commit is contained in:
Matias Nitsche 2020-06-15 18:57:37 -03:00 committed by Alan Carvalho de Assis
parent b4bea95a6a
commit d1c538b65c
1 changed files with 18 additions and 7 deletions
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25
arch/arm/src/stm32l4/stm32l4_dfumode.c
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@ -49,6 +49,16 @@
#include "hardware/stm32l4_syscfg.h"
#include "stm32l4_dfumode.h"
/****************************************************************************
* Private Types
****************************************************************************/
typedef void (*boot_call_t)(void);
/****************************************************************************
* Private Functions
****************************************************************************/
static inline void rcc_reset(void)
{
uint32_t regval;
@ -73,9 +83,9 @@ static inline void rcc_reset(void)
/* Reset HSION, HSEON, CSSON and PLLON bits */
regval = getreg32(STM32L4_RCC_CR);
regval &= ~(RCC_CR_HSION | RCC_CR_HSIKERON | RCC_CR_HSEON | RCC_CR_HSIASFS |
RCC_CR_CSSON | RCC_CR_PLLON | RCC_CR_PLLON | RCC_CR_PLLSAI1ON |
RCC_CR_PLLSAI2ON);
regval &= ~(RCC_CR_HSION | RCC_CR_HSIKERON | RCC_CR_HSEON |
RCC_CR_HSIASFS | RCC_CR_CSSON | RCC_CR_PLLON | RCC_CR_PLLON |
RCC_CR_PLLSAI1ON | RCC_CR_PLLSAI2ON);
putreg32(regval, STM32L4_RCC_CR);
/* Reset PLLCFGR register to reset default */
@ -132,13 +142,14 @@ static inline void apb_reset(void)
void stm32l4_dfumode(void)
{
uint32_t regval;
void (*SysMemBootJump)(void);
boot_call_t boot = (boot_call_t)(*(uint32_t *)0x1fff0004);
#ifdef CONFIG_DEBUG_WARN
_warn("Entering DFU mode...\n");
#endif
/* disable all peripherals, interrupts and switch to HSI */
rcc_reset();
apb_reset();
@ -159,10 +170,10 @@ void stm32l4_dfumode(void)
/* jump into ROM */
SysMemBootJump = (void (*)(void))(*((uint32_t*)0x1fff0004));
SysMemBootJump();
boot();
while (true);
while(1);
__builtin_unreachable(); /* Tell compiler we will not return */
}
#endif