struct stm32_flash_regs {
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u32 acr;
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u32 key;
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u32 optkeyr;
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u32 sr;
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u32 cr;
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u32 optcr;
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u32 optcr1;
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};
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#define STM32_FLASH_KEY1 0x45670123
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#define STM32_FLASH_KEY2 0xCDEF89AB
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#define STM32_FLASH_SR_BSY (1 << 16)
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#define STM32_FLASH_CR_PG (1 << 0)
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#define STM32_FLASH_CR_SER (1 << 1)
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#define STM32_FLASH_CR_STRT (1 << 16)
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#define STM32_FLASH_CR_LOCK (1 << 31)
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#define STM32_FLASH_CR_SNB_OFFSET 3
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#define STM32_FLASH_CR_SNB_MASK (15 << STM32_FLASH_CR_SNB_OFFSET)
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/* Flash ACR: Access control register */
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#define FLASH_ACR_WS(n) n
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#define FLASH_ACR_PRFTEN (1 << 8)
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#define FLASH_ACR_ICEN (1 << 9)
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#define FLASH_ACR_DCEN (1 << 10)
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