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trezorhal: add flash_set_option_bytes function
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@ -21,3 +21,37 @@ void FLASH_IRQHandler(void) {
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// This call the storage IRQ handler, to check if the flash cache needs flushing
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// storage_irq_handler();
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}
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#define WANTED_WRP (OB_WRP_SECTOR_0 | OB_WRP_SECTOR_1)
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#define WANTED_RDP (OB_RDP_LEVEL_2)
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#define WANTED_BOR (OB_BOR_LEVEL3)
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void flash_set_option_bytes(void)
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{
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FLASH_OBProgramInitTypeDef opts;
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HAL_FLASHEx_OBGetConfig(&opts);
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opts.OptionType = 0;
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if (opts.WRPSector != WANTED_WRP) {
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opts.OptionType = OPTIONBYTE_WRP;
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opts.WRPState = OB_WRPSTATE_ENABLE;
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opts.WRPSector = WANTED_WRP;
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opts.Banks = FLASH_BANK_1;
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}
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if (opts.RDPLevel != WANTED_RDP) {
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opts.OptionType = OPTIONBYTE_RDP;
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opts.RDPLevel = WANTED_RDP;
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}
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if (opts.BORLevel != WANTED_BOR) {
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opts.OptionType = OPTIONBYTE_BOR;
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opts.BORLevel = WANTED_BOR;
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}
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if (opts.OptionType != 0) {
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HAL_FLASHEx_OBProgram(&opts);
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}
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}
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@ -3,4 +3,6 @@
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int flash_init(void);
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void flash_set_option_bytes(void);
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#endif
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