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kernel: init: initialize stm32 ccm sections

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Initialize the ccm_bss section to zero.
Copy the ccm_data section from the rom section.

Signed-off-by: Erwin Rol <erwin@erwinrol.com>
This commit is contained in:
Erwin Rol 2017-10-05 01:22:32 +02:00 • committed by Kumar Gala
commit 1dc41d19b3
1 changed files with 8 additions and 0 deletions
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8
kernel/init.c
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@ -142,6 +142,10 @@ void _bss_zero(void)
{
memset(&__bss_start, 0,
((u32_t) &__bss_end - (u32_t) &__bss_start));
#ifdef CONFIG_CCM_BASE_ADDRESS
memset(&__ccm_bss_start, 0,
((u32_t) &__ccm_bss_end - (u32_t) &__ccm_bss_start));
#endif
#ifdef CONFIG_APPLICATION_MEMORY
memset(&__app_bss_start, 0,
((u32_t) &__app_bss_end - (u32_t) &__app_bss_start));
@ -162,6 +166,10 @@ void _data_copy(void)
{
memcpy(&__data_ram_start, &__data_rom_start,
((u32_t) &__data_ram_end - (u32_t) &__data_ram_start));
#ifdef CONFIG_CCM_BASE_ADDRESS
memcpy(&__ccm_data_start, &__ccm_data_rom_start,
((u32_t) &__ccm_data_end - (u32_t) &__ccm_data_start));
#endif
#ifdef CONFIG_APPLICATION_MEMORY
memcpy(&__app_data_ram_start, &__app_data_rom_start,
((u32_t) &__app_data_ram_end - (u32_t) &__app_data_ram_start));