/* * (c) 2009 Magnus Lilja <lilja.magnus@gmail.com> * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #ifndef __FSL_NFC_H #define __FSL_NFC_H /* * TODO: Use same register defs for nand_spl mxc nand driver * and mtd mxc nand driver. * * Register map and bit definitions for the Freescale NAND Flash * Controller present in various i.MX devices. * * MX31 and MX27 have version 1 which has * 4 512 byte main buffers and * 4 16 byte spare buffers * to support up to 2K byte pagesize nand. * Reading or writing a 2K page requires 4 FDI/FDO cycles. * * MX25 has version 1.1 which has * 8 512 byte main buffers and * 8 64 byte spare buffers * to support up to 4K byte pagesize nand. * Reading or writing a 2K or 4K page requires only 1 FDI/FDO cycle. * Also some of registers are moved and/or changed meaning as seen below. */ #if defined(CONFIG_MX31) || defined(CONFIG_MX27) #define MXC_NFC_V1 #elif defined(CONFIG_MX25) #define MXC_NFC_V1_1 #else #warning "MXC NFC version not defined" #endif #if defined(MXC_NFC_V1) #define NAND_MXC_NR_BUFS 4 #define NAND_MXC_SPARE_BUF_SIZE 16 #define NAND_MXC_REG_OFFSET 0xe00 #define NAND_MXC_2K_MULTI_CYCLE 1 #elif defined(MXC_NFC_V1_1) #define NAND_MXC_NR_BUFS 8 #define NAND_MXC_SPARE_BUF_SIZE 64 #define NAND_MXC_REG_OFFSET 0x1e00 #else #error "define CONFIG_NAND_MXC_VXXX to use the mxc spl_nand driver" #endif struct fsl_nfc_regs { u32 main_area[NAND_MXC_NR_BUFS][512/4]; u32 spare_area[NAND_MXC_NR_BUFS][NAND_MXC_SPARE_BUF_SIZE/4]; /* * reserved size is offset of nfc registers * minus total main and spare sizes */ u8 reserved1[NAND_MXC_REG_OFFSET - NAND_MXC_NR_BUFS * (512 + NAND_MXC_SPARE_BUF_SIZE)]; #if defined(MXC_NFC_V1) u16 bufsiz; u16 reserved2; u16 buffer_address; u16 flash_add; u16 flash_cmd; u16 configuration; u16 ecc_status_result; u16 ecc_rslt_main_area; u16 ecc_rslt_spare_area; u16 nf_wr_prot; u16 unlock_start_blk_add; u16 unlock_end_blk_add; u16 nand_flash_wr_pr_st; u16 nand_flash_config1; u16 nand_flash_config2; #elif defined(MXC_NFC_V1_1) u16 reserved2[2]; u16 buffer_address; u16 flash_add; u16 flash_cmd; u16 configuration; u16 ecc_status_result; u16 ecc_status_result2; u16 spare_area_size; u16 nf_wr_prot; u16 reserved3[2]; u16 nand_flash_wr_pr_st; u16 nand_flash_config1; u16 nand_flash_config2; u16 reserved4; u16 unlock_start_blk_add0; u16 unlock_end_blk_add0; u16 unlock_start_blk_add1; u16 unlock_end_blk_add1; u16 unlock_start_blk_add2; u16 unlock_end_blk_add2; u16 unlock_start_blk_add3; u16 unlock_end_blk_add3; #endif }; /* * Set INT to 0, FCMD to 1, rest to 0 in NFC_CONFIG2 Register for Command * operation */ #define NFC_CMD 0x1 /* * Set INT to 0, FADD to 1, rest to 0 in NFC_CONFIG2 Register for Address * operation */ #define NFC_ADDR 0x2 /* * Set INT to 0, FDI to 1, rest to 0 in NFC_CONFIG2 Register for Input * operation */ #define NFC_INPUT 0x4 /* * Set INT to 0, FDO to 001, rest to 0 in NFC_CONFIG2 Register for Data * Output operation */ #define NFC_OUTPUT 0x8 /* * Set INT to 0, FD0 to 010, rest to 0 in NFC_CONFIG2 Register for Read ID * operation */ #define NFC_ID 0x10 /* * Set INT to 0, FDO to 100, rest to 0 in NFC_CONFIG2 Register for Read * Status operation */ #define NFC_STATUS 0x20 /* * Set INT to 1, rest to 0 in NFC_CONFIG2 Register for Read Status * operation */ #define NFC_INT 0x8000 #ifdef MXC_NFC_V1_1 #define NFC_4_8N_ECC (1 << 0) #endif #define NFC_SP_EN (1 << 2) #define NFC_ECC_EN (1 << 3) #define NFC_INT_MSK (1 << 4) #define NFC_BIG (1 << 5) #define NFC_RST (1 << 6) #define NFC_CE (1 << 7) #define NFC_ONE_CYCLE (1 << 8) #endif /* __FSL_NFC_H */