diff options
Diffstat (limited to 'libopencm3/include/libopencm3/sam/eefc.h')
| -rw-r--r-- | libopencm3/include/libopencm3/sam/eefc.h | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/libopencm3/include/libopencm3/sam/eefc.h b/libopencm3/include/libopencm3/sam/eefc.h new file mode 100644 index 0000000..eb6d4d0 --- /dev/null +++ b/libopencm3/include/libopencm3/sam/eefc.h @@ -0,0 +1,83 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2013 Gareth McMullin <gareth@blacksphere.co.nz> + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef SAM3X_EEFC_H +#define SAM3X_EEFC_H + +#include <libopencm3/cm3/common.h> +#include <libopencm3/sam/memorymap.h> + +/* --- Convenience macros ------------------------------------------------ */ +#define EEFC EEFC_BASE +#define EEFC0 EEFC0_BASE +#define EEFC1 EEFC1_BASE + +/* --- Enhanced Embedded Flash Controller (EEFC) registers --------------- */ +#define EEFC_FMR(port) MMIO32((port) + 0x00) +#define EEFC_FCR(port) MMIO32((port) + 0x04) +#define EEFC_FSR(port) MMIO32((port) + 0x08) +#define EEFC_FRR(port) MMIO32((port) + 0x0C) +/* 0x0010 - Reserved */ + + +/* EEFC Flash Mode Register (EEFC_FMR) */ +/* Bit [31:25] - Reserved */ +#define EEFC_FMR_FAM (0x01 << 24) +/* Bit [23:12] - Reserved */ +#define EEFC_FMR_FWS_MASK (0x0F << 8) +/* Bit [7:1] - Reserved */ +#define EEFC_FMR_FRDY (0x01 << 0) + +/* EEFC Flash Command Register (EEFC_FCR) */ +#define EEFC_FCR_FKEY (0x5A << 24) +#define EEFC_FCR_FARG_MASK (0xFFFF << 8) +#define EEFC_FCR_FCMD_MASK (0xFF << 0) +#define EEFC_FCR_FCMD_GETD (0x00 << 0) +#define EEFC_FCR_FCMD_WP (0x01 << 0) +#define EEFC_FCR_FCMD_WPL (0x02 << 0) +#define EEFC_FCR_FCMD_EWP (0x03 << 0) +#define EEFC_FCR_FCMD_EWPL (0x04 << 0) +#define EEFC_FCR_FCMD_EA (0x05 << 0) +#define EEFC_FCR_FCMD_SLB (0x08 << 0) +#define EEFC_FCR_FCMD_CLB (0x09 << 0) +#define EEFC_FCR_FCMD_GLB (0x0A << 0) +#define EEFC_FCR_FCMD_SGPB (0x0B << 0) +#define EEFC_FCR_FCMD_CGPB (0x0C << 0) +#define EEFC_FCR_FCMD_GGPB (0x0D << 0) +#define EEFC_FCR_FCMD_STUI (0x0E << 0) +#define EEFC_FCR_FCMD_SPUI (0x0F << 0) + +/* EEFC Flash Status Register (EEFC_FSR) */ +/* Bit [31:3] - Reserved */ +#define EEFC_FSR_FLOCKE (0x01 << 2) +#define EEFC_FSR_FCMDE (0x01 << 1) +#define EEFC_FSR_FRDY (0x01 << 0) + +static inline void eefc_set_latency(uint8_t wait) +{ +#if defined(SAM3A) || defined(SAM3U) || defined(SAM3X) + EEFC_FMR(EEFC0) = (EEFC_FMR(EEFC0) & ~EEFC_FMR_FWS_MASK) | (wait << 8); + EEFC_FMR(EEFC1) = (EEFC_FMR(EEFC1) & ~EEFC_FMR_FWS_MASK) | (wait << 8); +#elif defined(SAM3N) || defined(SAM3S) + EEFC_FMR(EEFC) = (EEFC_FMR(EEFC) & ~EEFC_FMR_FWS_MASK) | (wait << 8); +#endif +} + +#endif + |