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Updater: Add safety memory to updater

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This commit is contained in:
Mario Hüttel
2021-04-06 20:55:41 +02:00
parent 08eee66d30
commit 6e5627fde2
9 changed files with 86 additions and 22 deletions
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14
stm-firmware/updater/ram-code/startup.c
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@@ -260,28 +260,28 @@ extern unsigned int __ld_vector_start;
extern unsigned int __ld_sbss;
extern unsigned int __ld_ebss;
#ifdef CPACR
#undef CPACR
#endif
#define CPACR (*((volatile uint32_t *)0xE000ED88))
void Reset_Handler(void)
void Reset_Handler()
{
/* The first thing we do here, is to initialize the FPU
* When this code is compiled optimized with hardfpu abi,
* GCC tends to generate FPU instructions for data copying
*/
CPACR |= (0xF << 20);
/* Reset the stack pointer to top of stack. SP is not required to be inside the clobber list! */
__asm__ __volatile__ ("mov sp, %0\n\t" :: "r"(&__ld_top_of_stack) :);
/* Fill bss with zero */
__fill_zero(&__ld_sbss, &__ld_ebss);
/* Fill Heap with zero */
/* Reset the stack pointer to top of stack. SP is not required to be inside the clobber list! */
__asm__ __volatile__ ("mov sp, %0\n\t" :: "r"(&__ld_top_of_stack) :);
ram_code_main();