115 lines
4.0 KiB
C
115 lines
4.0 KiB
C
/*
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* This file is part of the libopencm3 project.
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*
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* Copyright (C) 2013 Frantisek Burian <BuFran@seznam.cz>
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef LIBOPENCM3_FLASH_H
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#define LIBOPENCM3_FLASH_H
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#include <libopencm3/stm32/memorymap.h>
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#include <libopencm3/cm3/common.h>
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/* --- FLASH registers ----------------------------------------------------- */
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#define FLASH_ACR MMIO32(FLASH_MEM_INTERFACE_BASE + 0x00)
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#define FLASH_KEYR MMIO32(FLASH_MEM_INTERFACE_BASE + 0x04)
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#define FLASH_OPTKEYR MMIO32(FLASH_MEM_INTERFACE_BASE + 0x08)
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#define FLASH_SR MMIO32(FLASH_MEM_INTERFACE_BASE + 0x0C)
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#define FLASH_CR MMIO32(FLASH_MEM_INTERFACE_BASE + 0x10)
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#define FLASH_AR MMIO32(FLASH_MEM_INTERFACE_BASE + 0x14)
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#define FLASH_OBR MMIO32(FLASH_MEM_INTERFACE_BASE + 0x1C)
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#define FLASH_WRPR MMIO32(FLASH_MEM_INTERFACE_BASE + 0x20)
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/* --- FLASH_ACR values ---------------------------------------------------- */
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#define FLASH_ACR_PRFTBS (1 << 5)
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#define FLASH_ACR_PRFTBE (1 << 4)
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#define FLASH_ACR_LATENCY_SHIFT 0
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#define FLASH_ACR_LATENCY 7
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#define FLASH_ACR_LATENCY_000_024MHZ 0
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#define FLASH_ACR_LATENCY_024_048MHZ 1
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#define FLASH_ACR_LATENCY_0WS 0
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#define FLASH_ACR_LATENCY_1WS 1
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/* --- FLASH_SR values ----------------------------------------------------- */
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#define FLASH_SR_EOP (1 << 5)
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#define FLASH_SR_WRPRTERR (1 << 4)
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#define FLASH_SR_PGERR (1 << 2)
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#define FLASH_SR_BSY (1 << 0)
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/* --- FLASH_CR values ----------------------------------------------------- */
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#define FLASH_CR_OBL_LAUNCH (1 << 13)
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#define FLASH_CR_EOPIE (1 << 12)
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#define FLASH_CR_ERRIE (1 << 10)
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#define FLASH_CR_OPTWRE (1 << 9)
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#define FLASH_CR_LOCK (1 << 7)
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#define FLASH_CR_STRT (1 << 6)
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#define FLASH_CR_OPTER (1 << 5)
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#define FLASH_CR_OPTPG (1 << 4)
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#define FLASH_CR_MER (1 << 2)
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#define FLASH_CR_PER (1 << 1)
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#define FLASH_CR_PG (1 << 0)
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/* --- FLASH_OBR values ---------------------------------------------------- */
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#define FLASH_OBR_DATA1_SHIFT 24
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#define FLASH_OBR_DATA1 (0xFF << FLASH_OBR_DATA1_SHIFT)
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#define FLASH_OBR_DATA0_SHIFT 16
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#define FLASH_OBR_DATA0 (0xFF << FLASH_OBR_DATA0_SHIFT)
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#define FLASH_OBR_RAM_PARITY_CHECK (1 << 14)
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#define FLASH_OBR_VDDA_MONITOR (1 << 13)
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#define FLASH_OBR_NBOOT1 (1 << 12)
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#define FLASH_OBR_NRST_STDBY (1 << 10)
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#define FLASH_OBR_NRST_STOP (1 << 9)
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#define FLASH_OBR_WDG_SW (1 << 8)
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#define FLASH_OBR_RDPRT_SHIFT 1
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#define FLASH_OBR_RDPRT (3 << FLASH_OBR_RDPRT_SHIFT)
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#define FLASH_OBR_RDPRT_L0 (0 << FLASH_OBR_RDPRT_SHIFT)
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#define FLASH_OBR_RDPRT_L1 (1 << FLASH_OBR_RDPRT_SHIFT)
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#define FLASH_OBR_RDPRT_L2 (2 << FLASH_OBR_RDPRT_SHIFT)
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#define FLASH_OBR_OPTERR (1 << 0)
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/* --- FLASH Keys -----------------------------------------------------------*/
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#define FLASH_RDP_L0 ((uint8_t)0xaa)
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#define FLASH_RDP_L1 ((uint8_t)0xf0) /* any value */
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#define FLASH_RDP_L2 ((uint8_t)0xcc)
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#define FLASH_KEYR_KEY1 ((uint32_t)0x45670123)
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#define FLASH_KEYR_KEY2 ((uint32_t)0xcdef89ab)
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/* --- Function prototypes ------------------------------------------------- */
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BEGIN_DECLS
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void flash_prefetch_buffer_enable(void);
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void flash_prefetch_buffer_disable(void);
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void flash_set_ws(uint32_t ws);
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void flash_wait_busy(void);
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void flash_program_u32(uint32_t address, uint32_t data);
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void flash_program_u16(uint32_t address, uint16_t data);
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void flash_erase_page(uint32_t page_address);
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void flash_erase_all_pages(void);
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END_DECLS
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#endif
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