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add ability for developers to easily avoid locking their flash memory sectors

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This commit is contained in:
mruddy 2017-06-30 09:02:47 -04:00 committed by Pavol Rusnak
parent d15dd7c944
commit 90d214eb4b
2 changed files with 8 additions and 0 deletions
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6
Makefile.include
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@ -59,6 +59,12 @@ else
LDSCRIPT = $(TOP_DIR)/memory.ld LDSCRIPT = $(TOP_DIR)/memory.ld
endif endif
ifeq ($(MEMORY_PROTECT), 0)
CFLAGS += -DMEMORY_PROTECT=0
else
CFLAGS += -DMEMORY_PROTECT=1
endif
LDFLAGS += --static \ LDFLAGS += --static \
-Wl,--start-group \ -Wl,--start-group \
-lc \ -lc \

2
memory.c
View File

@ -27,6 +27,7 @@
void memory_protect(void) void memory_protect(void)
{ {
#if MEMORY_PROTECT
// Reference STM32F205 Flash programming manual revision 5 http://www.st.com/resource/en/programming_manual/cd00233952.pdf // Reference STM32F205 Flash programming manual revision 5 http://www.st.com/resource/en/programming_manual/cd00233952.pdf
// Section 2.6 Option bytes // Section 2.6 Option bytes
// set RDP level 2 WRP for sectors 0 and 1 // set RDP level 2 WRP for sectors 0 and 1
@ -45,6 +46,7 @@ void memory_protect(void)
// Bit 0 OPTLOCK: Option lock: ignored by flash_program_option_bytes // Bit 0 OPTLOCK: Option lock: ignored by flash_program_option_bytes
flash_program_option_bytes(0x0FFCCCEC); flash_program_option_bytes(0x0FFCCCEC);
flash_lock_option_bytes(); flash_lock_option_bytes();
#endif
} }
int memory_bootloader_hash(uint8_t *hash) int memory_bootloader_hash(uint8_t *hash)