// SPDX-License-Identifier: GPL-2.0 /* Common Flash Interface probe code. (C) 2000 Red Hat. See JEDEC (http://www.jedec.org/) standard JESD21C (section 3.5) for the standard this probe goes back to. Occasionally maintained by Thayne Harbaugh tharbaugh at lnxi dot com */ #include <linux/module.h> #include <linux/init.h> #include <linux/types.h> #include <linux/kernel.h> #include <asm/io.h> #include <asm/byteorder.h> #include <linux/errno.h> #include <linux/slab.h> #include <linux/interrupt.h> #include <linux/mtd/mtd.h> #include <linux/mtd/map.h> #include <linux/mtd/cfi.h> #include <linux/mtd/gen_probe.h> /* AMD */ #define AM29DL800BB … #define AM29DL800BT … #define AM29F800BB … #define AM29F800BT … #define AM29LV400BB … #define AM29LV400BT … #define AM29LV800BB … #define AM29LV800BT … #define AM29LV160DT … #define AM29LV160DB … #define AM29F017D … #define AM29F016D … #define AM29F080 … #define AM29F040 … #define AM29LV040B … #define AM29F032B … #define AM29F002T … #define AM29SL800DB … #define AM29SL800DT … /* Atmel */ #define AT49BV512 … #define AT29LV512 … #define AT49BV16X … #define AT49BV16XT … #define AT49BV32X … #define AT49BV32XT … /* Eon */ #define EN29LV400AT … #define EN29LV400AB … #define EN29SL800BB … #define EN29SL800BT … /* Fujitsu */ #define MBM29F040C … #define MBM29F800BA … #define MBM29LV650UE … #define MBM29LV320TE … #define MBM29LV320BE … #define MBM29LV160TE … #define MBM29LV160BE … #define MBM29LV800BA … #define MBM29LV800TA … #define MBM29LV400TC … #define MBM29LV400BC … /* Hyundai */ #define HY29F002T … /* Intel */ #define I28F004B3T … #define I28F004B3B … #define I28F400B3T … #define I28F400B3B … #define I28F008S5 … #define I28F016S5 … #define I28F008SA … #define I28F008B3T … #define I28F008B3B … #define I28F800B3T … #define I28F800B3B … #define I28F016S3 … #define I28F016B3T … #define I28F016B3B … #define I28F160B3T … #define I28F160B3B … #define I28F320B3T … #define I28F320B3B … #define I28F640B3T … #define I28F640B3B … #define I28F640C3B … #define I28F160F3T … #define I28F160F3B … #define I28F160C3T … #define I28F160C3B … #define I82802AB … #define I82802AC … /* Macronix */ #define MX29LV040C … #define MX29LV160T … #define MX29LV160B … #define MX29F040 … #define MX29F016 … #define MX29F002T … #define MX29F004T … #define MX29F004B … /* NEC */ #define UPD29F064115 … /* PMC */ #define PM49FL002 … #define PM49FL004 … #define PM49FL008 … /* Sharp */ #define LH28F640BF … /* ST - www.st.com */ #define M29F800AB … #define M29W800DT … #define M29W800DB … #define M29W400DT … #define M29W400DB … #define M29W160DT … #define M29W160DB … #define M29W040B … #define M50FW040 … #define M50FW080 … #define M50FW016 … #define M50LPW080 … #define M50FLW080A … #define M50FLW080B … #define PSD4256G6V … /* SST */ #define SST29EE020 … #define SST29LE020 … #define SST29EE512 … #define SST29LE512 … #define SST39LF800 … #define SST39LF160 … #define SST39VF1601 … #define SST39VF3201 … #define SST39WF1601 … #define SST39WF1602 … #define SST39LF512 … #define SST39LF010 … #define SST39LF020 … #define SST39LF040 … #define SST39SF010A … #define SST39SF020A … #define SST39SF040 … #define SST49LF004B … #define SST49LF040B … #define SST49LF008A … #define SST49LF030A … #define SST49LF040A … #define SST49LF080A … #define SST36VF3203 … /* Toshiba */ #define TC58FVT160 … #define TC58FVB160 … #define TC58FVT321 … #define TC58FVB321 … #define TC58FVT641 … #define TC58FVB641 … /* Winbond */ #define W49V002A … /* * Unlock address sets for AMD command sets. * Intel command sets use the MTD_UADDR_UNNECESSARY. * Each identifier, except MTD_UADDR_UNNECESSARY, and * MTD_UADDR_NO_SUPPORT must be defined below in unlock_addrs[]. * MTD_UADDR_NOT_SUPPORTED must be 0 so that structure * initialization need not require initializing all of the * unlock addresses for all bit widths. */ enum uaddr { … }; struct unlock_addr { … }; /* * I don't like the fact that the first entry in unlock_addrs[] * exists, but is for MTD_UADDR_NOT_SUPPORTED - and, therefore, * should not be used. The problem is that structures with * initializers have extra fields initialized to 0. It is _very_ * desirable to have the unlock address entries for unsupported * data widths automatically initialized - that means that * MTD_UADDR_NOT_SUPPORTED must be 0 and the first entry here * must go unused. */ static const struct unlock_addr unlock_addrs[] = …; struct amd_flash_info { … }; #define ERASEINFO(size,blocks) … #define SIZE_64KiB … #define SIZE_128KiB … #define SIZE_256KiB … #define SIZE_512KiB … #define SIZE_1MiB … #define SIZE_2MiB … #define SIZE_4MiB … #define SIZE_8MiB … /* * Please keep this list ordered by manufacturer! * Fortunately, the list isn't searched often and so a * slow, linear search isn't so bad. */ static const struct amd_flash_info jedec_table[] = …; static inline u32 jedec_read_mfr(struct map_info *map, uint32_t base, struct cfi_private *cfi) { … } static inline u32 jedec_read_id(struct map_info *map, uint32_t base, struct cfi_private *cfi) { … } static void jedec_reset(u32 base, struct map_info *map, struct cfi_private *cfi) { … } static int cfi_jedec_setup(struct map_info *map, struct cfi_private *cfi, int index) { … } /* * There is a BIG problem properly ID'ing the JEDEC device and guaranteeing * the mapped address, unlock addresses, and proper chip ID. This function * attempts to minimize errors. It is doubtfull that this probe will ever * be perfect - consequently there should be some module parameters that * could be manually specified to force the chip info. */ static inline int jedec_match( uint32_t base, struct map_info *map, struct cfi_private *cfi, const struct amd_flash_info *finfo ) { … } static int jedec_probe_chip(struct map_info *map, __u32 base, unsigned long *chip_map, struct cfi_private *cfi) { … } static struct chip_probe jedec_chip_probe = …; static struct mtd_info *jedec_probe(struct map_info *map) { … } static struct mtd_chip_driver jedec_chipdrv = …; static int __init jedec_probe_init(void) { … } static void __exit jedec_probe_exit(void) { … } module_init(…) …; module_exit(jedec_probe_exit); MODULE_LICENSE(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …;
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