/* * incude/mtd/fsmc.h * * ST Microelectronics * Flexible Static Memory Controller (FSMC) * platform data interface and header file * * Copyright © 2010 ST Microelectronics * Vipin Kumar * * This file is licensed under the terms of the GNU General Public * License version 2. This program is licensed "as is" without any * warranty of any kind, whether express or implied. */ #ifndef __MTD_FSMC_H #define __MTD_FSMC_H #include #include #include #include #include #include #define FSMC_NAND_BW8 1 #define FSMC_NAND_BW16 2 /* * The placement of the Command Latch Enable (CLE) and * Address Latch Enable (ALE) is twisted around in the * SPEAR310 implementation. */ #if defined(CONFIG_MACH_SPEAR310) #define PLAT_NAND_CLE (1 << 17) #define PLAT_NAND_ALE (1 << 16) #else #define PLAT_NAND_CLE (1 << 16) #define PLAT_NAND_ALE (1 << 17) #endif #define FSMC_MAX_NOR_BANKS 4 #define FSMC_MAX_NAND_BANKS 4 #define FSMC_FLASH_WIDTH8 1 #define FSMC_FLASH_WIDTH16 2 struct fsmc_nor_bank_regs { uint32_t ctrl; uint32_t ctrl_tim; }; /* ctrl register definitions */ #define BANK_ENABLE (1 << 0) #define MUXED (1 << 1) #define NOR_DEV (2 << 2) #define WIDTH_8 (0 << 4) #define WIDTH_16 (1 << 4) #define RSTPWRDWN (1 << 6) #define WPROT (1 << 7) #define WRT_ENABLE (1 << 12) #define WAIT_ENB (1 << 13) /* ctrl_tim register definitions */ struct fsmc_nand_bank_regs { uint32_t pc; uint32_t sts; uint32_t comm; uint32_t attrib; uint32_t ioata; uint32_t ecc1; uint32_t ecc2; uint32_t ecc3; }; #define FSMC_NOR_REG_SIZE 0x40 struct fsmc_regs { struct fsmc_nor_bank_regs nor_bank_regs[FSMC_MAX_NOR_BANKS]; uint8_t reserved_1[0x40 - 0x20]; struct fsmc_nand_bank_regs bank_regs[FSMC_MAX_NAND_BANKS]; uint8_t reserved_2[0xfe0 - 0xc0]; uint32_t peripid0; /* 0xfe0 */ uint32_t peripid1; /* 0xfe4 */ uint32_t peripid2; /* 0xfe8 */ uint32_t peripid3; /* 0xfec */ uint32_t pcellid0; /* 0xff0 */ uint32_t pcellid1; /* 0xff4 */ uint32_t pcellid2; /* 0xff8 */ uint32_t pcellid3; /* 0xffc */ }; #define FSMC_BUSY_WAIT_TIMEOUT (1 * HZ) /* pc register definitions */ #define FSMC_RESET (1 << 0) #define FSMC_WAITON (1 << 1) #define FSMC_ENABLE (1 << 2) #define FSMC_DEVTYPE_NAND (1 << 3) #define FSMC_DEVWID_8 (0 << 4) #define FSMC_DEVWID_16 (1 << 4) #define FSMC_ECCEN (1 << 6) #define FSMC_ECCPLEN_512 (0 << 7) #define FSMC_ECCPLEN_256 (1 << 7) #define FSMC_TCLR_1 (1 << 9) #define FSMC_TAR_1 (1 << 13) /* sts register definitions */ #define FSMC_CODE_RDY (1 << 15) /* comm register definitions */ #define FSMC_TSET_0 (0 << 0) #define FSMC_TWAIT_6 (6 << 8) #define FSMC_THOLD_4 (4 << 16) #define FSMC_THIZ_1 (1 << 24) /* * There are 13 bytes of ecc for every 512 byte block in FSMC version 8 * and it has to be read consecutively and immediately after the 512 * byte data block for hardware to generate the error bit offsets * Managing the ecc bytes in the following way is easier. This way is * similar to oobfree structure maintained already in u-boot nand driver */ #define MAX_ECCPLACE_ENTRIES 32 struct fsmc_nand_eccplace { uint8_t offset; uint8_t length; }; struct fsmc_eccplace { struct fsmc_nand_eccplace eccplace[MAX_ECCPLACE_ENTRIES]; }; /** * fsmc_nand_platform_data - platform specific NAND controller config * @partitions: partition table for the platform, use a default fallback * if this is NULL * @nr_partitions: the number of partitions in the previous entry * @options: different options for the driver * @width: bus width * @bank: default bank * @select_bank: callback to select a certain bank, this is * platform-specific. If the controller only supports one bank * this may be set to NULL */ struct fsmc_nand_platform_data { struct mtd_partition *partitions; unsigned int nr_partitions; unsigned int options; unsigned int width; unsigned int bank; void (*select_bank)(uint32_t bank, uint32_t busw); }; extern int __init fsmc_nor_init(struct platform_device *pdev, unsigned long base, uint32_t bank, uint32_t width); extern void __init fsmc_init_board_info(struct platform_device *pdev, struct mtd_partition *partitions, unsigned int nr_partitions, unsigned int width); #endif /* __MTD_FSMC_H */