[MTD] Support for protection register support on Intel FLASH chips
This enables support for reading, writing and locking so called "Protection Registers" present on some flash chips. A subset of them are pre-programmed at the factory with a unique set of values. The rest is user-programmable. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>wifi-calibration
Nicolas Pitre
Thomas Gleixner
parent
67d9e95c39
commit
f77814dd57
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@ -1,5 +1,5 @@
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# drivers/mtd/chips/Kconfig
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# $Id: Kconfig,v 1.13 2004/12/01 15:49:10 nico Exp $
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# $Id: Kconfig,v 1.14 2005/02/08 17:11:15 nico Exp $
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menu "RAM/ROM/Flash chip drivers"
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depends on MTD!=n
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@ -155,6 +155,31 @@ config MTD_CFI_I8
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If your flash chips are interleaved in eights - i.e. you have eight
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flash chips addressed by each bus cycle, then say 'Y'.
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config MTD_OTP
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bool "Protection Registers aka one-time programmable (OTP) bits"
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depends on MTD_CFI_ADV_OPTIONS
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default n
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help
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This enables support for reading, writing and locking so called
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"Protection Registers" present on some flash chips.
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A subset of them are pre-programmed at the factory with a
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unique set of values. The rest is user-programmable.
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The user-programmable Protection Registers contain one-time
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programmable (OTP) bits; when programmed, register bits cannot be
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erased. Each Protection Register can be accessed multiple times to
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program individual bits, as long as the register remains unlocked.
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Each Protection Register has an associated Lock Register bit. When a
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Lock Register bit is programmed, the associated Protection Register
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can only be read; it can no longer be programmed. Additionally,
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because the Lock Register bits themselves are OTP, when programmed,
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Lock Register bits cannot be erased. Therefore, when a Protection
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Register is locked, it cannot be unlocked.
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This feature should therefore be used with extreme care. Any mistake
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in the programming of OTP bits will waste them.
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config MTD_CFI_INTELEXT
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tristate "Support for Intel/Sharp flash chips"
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depends on MTD_GEN_PROBE
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@ -4,7 +4,7 @@
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*
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* (C) 2000 Red Hat. GPL'd
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*
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* $Id: cfi_cmdset_0001.c,v 1.165 2005/02/05 02:06:15 nico Exp $
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* $Id: cfi_cmdset_0001.c,v 1.167 2005/02/08 17:11:15 nico Exp $
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*
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*
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* 10/10/2000 Nicolas Pitre <nico@cam.org>
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@ -48,14 +48,20 @@
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#define M50LPW080 0x002F
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static int cfi_intelext_read (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
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//static int cfi_intelext_read_user_prot_reg (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
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//static int cfi_intelext_read_fact_prot_reg (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
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static int cfi_intelext_write_words(struct mtd_info *, loff_t, size_t, size_t *, const u_char *);
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static int cfi_intelext_write_buffers(struct mtd_info *, loff_t, size_t, size_t *, const u_char *);
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static int cfi_intelext_erase_varsize(struct mtd_info *, struct erase_info *);
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static void cfi_intelext_sync (struct mtd_info *);
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static int cfi_intelext_lock(struct mtd_info *mtd, loff_t ofs, size_t len);
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static int cfi_intelext_unlock(struct mtd_info *mtd, loff_t ofs, size_t len);
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static int cfi_intelext_read_fact_prot_reg (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
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static int cfi_intelext_read_user_prot_reg (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
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static int cfi_intelext_write_user_prot_reg (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
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static int cfi_intelext_lock_user_prot_reg (struct mtd_info *, loff_t, size_t);
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static int cfi_intelext_get_fact_prot_info (struct mtd_info *,
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struct otp_info *, size_t);
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static int cfi_intelext_get_user_prot_info (struct mtd_info *,
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struct otp_info *, size_t);
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static int cfi_intelext_suspend (struct mtd_info *);
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static void cfi_intelext_resume (struct mtd_info *);
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@ -423,9 +429,13 @@ static struct mtd_info *cfi_intelext_setup(struct mtd_info *mtd)
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mtd->eraseregions[i].numblocks);
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}
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#if 0
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mtd->read_user_prot_reg = cfi_intelext_read_user_prot_reg;
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#ifdef CONFIG_MTD_OTP
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mtd->read_fact_prot_reg = cfi_intelext_read_fact_prot_reg;
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mtd->read_user_prot_reg = cfi_intelext_read_user_prot_reg;
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mtd->write_user_prot_reg = cfi_intelext_write_user_prot_reg;
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mtd->lock_user_prot_reg = cfi_intelext_lock_user_prot_reg;
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mtd->get_fact_prot_info = cfi_intelext_get_fact_prot_info;
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mtd->get_user_prot_info = cfi_intelext_get_user_prot_info;
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#endif
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/* This function has the potential to distort the reality
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@ -565,7 +575,7 @@ static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr
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resettime:
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timeo = jiffies + HZ;
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retry:
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if (chip->priv && (mode == FL_WRITING || mode == FL_ERASING)) {
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if (chip->priv && (mode == FL_WRITING || mode == FL_ERASING || mode == FL_OTP_WRITE)) {
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/*
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* OK. We have possibility for contension on the write/erase
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* operations which are global to the real chip and not per
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@ -1178,111 +1188,11 @@ static int cfi_intelext_read (struct mtd_info *mtd, loff_t from, size_t len, siz
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return ret;
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}
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#if 0
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static int __xipram cfi_intelext_read_prot_reg (struct mtd_info *mtd,
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loff_t from, size_t len,
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size_t *retlen,
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u_char *buf,
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int base_offst, int reg_sz)
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{
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struct map_info *map = mtd->priv;
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struct cfi_private *cfi = map->fldrv_priv;
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struct cfi_pri_intelext *extp = cfi->cmdset_priv;
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struct flchip *chip;
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int ofs_factor = cfi->interleave * cfi->device_type;
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int count = len;
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int chip_num, offst;
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int ret;
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chip_num = ((unsigned int)from/reg_sz);
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offst = from - (reg_sz*chip_num)+base_offst;
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while (count) {
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/* Calculate which chip & protection register offset we need */
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if (chip_num >= cfi->numchips)
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goto out;
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chip = &cfi->chips[chip_num];
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spin_lock(chip->mutex);
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ret = get_chip(map, chip, chip->start, FL_JEDEC_QUERY);
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if (ret) {
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spin_unlock(chip->mutex);
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return (len-count)?:ret;
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}
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xip_disable(map, chip, chip->start);
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if (chip->state != FL_JEDEC_QUERY) {
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map_write(map, CMD(0x90), chip->start);
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chip->state = FL_JEDEC_QUERY;
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}
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while (count && ((offst-base_offst) < reg_sz)) {
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*buf = map_read8(map,(chip->start+((extp->ProtRegAddr+1)*ofs_factor)+offst));
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buf++;
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offst++;
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count--;
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}
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xip_enable(map, chip, chip->start);
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put_chip(map, chip, chip->start);
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spin_unlock(chip->mutex);
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/* Move on to the next chip */
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chip_num++;
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offst = base_offst;
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}
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out:
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return len-count;
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}
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static int cfi_intelext_read_user_prot_reg (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf)
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{
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struct map_info *map = mtd->priv;
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struct cfi_private *cfi = map->fldrv_priv;
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struct cfi_pri_intelext *extp=cfi->cmdset_priv;
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int base_offst,reg_sz;
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/* Check that we actually have some protection registers */
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if(!extp || !(extp->FeatureSupport&64)){
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printk(KERN_WARNING "%s: This flash device has no protection data to read!\n",map->name);
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return 0;
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}
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base_offst=(1<<extp->FactProtRegSize);
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reg_sz=(1<<extp->UserProtRegSize);
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return cfi_intelext_read_prot_reg(mtd, from, len, retlen, buf, base_offst, reg_sz);
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}
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static int cfi_intelext_read_fact_prot_reg (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf)
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{
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struct map_info *map = mtd->priv;
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struct cfi_private *cfi = map->fldrv_priv;
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struct cfi_pri_intelext *extp=cfi->cmdset_priv;
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int base_offst,reg_sz;
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/* Check that we actually have some protection registers */
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if(!extp || !(extp->FeatureSupport&64)){
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printk(KERN_WARNING "%s: This flash device has no protection data to read!\n",map->name);
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return 0;
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}
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base_offst=0;
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reg_sz=(1<<extp->FactProtRegSize);
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return cfi_intelext_read_prot_reg(mtd, from, len, retlen, buf, base_offst, reg_sz);
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}
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#endif
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static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip,
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unsigned long adr, map_word datum)
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unsigned long adr, map_word datum, int mode)
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{
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struct cfi_private *cfi = map->fldrv_priv;
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map_word status, status_OK;
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map_word status, status_OK, write_cmd;
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unsigned long timeo;
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int z, ret=0;
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@ -1290,9 +1200,14 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip,
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/* Let's determine this according to the interleave only once */
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status_OK = CMD(0x80);
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switch (mode) {
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case FL_WRITING: write_cmd = CMD(0x40); break;
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case FL_OTP_WRITE: write_cmd = CMD(0xc0); break;
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default: return -EINVAL;
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}
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spin_lock(chip->mutex);
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ret = get_chip(map, chip, adr, FL_WRITING);
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ret = get_chip(map, chip, adr, mode);
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if (ret) {
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spin_unlock(chip->mutex);
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return ret;
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@ -1301,9 +1216,9 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip,
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XIP_INVAL_CACHED_RANGE(map, adr, map_bankwidth(map));
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ENABLE_VPP(map);
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xip_disable(map, chip, adr);
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map_write(map, CMD(0x40), adr);
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map_write(map, write_cmd, adr);
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map_write(map, datum, adr);
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chip->state = FL_WRITING;
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chip->state = mode;
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spin_unlock(chip->mutex);
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INVALIDATE_CACHED_RANGE(map, adr, map_bankwidth(map));
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@ -1313,7 +1228,7 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip,
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timeo = jiffies + (HZ/2);
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z = 0;
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for (;;) {
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if (chip->state != FL_WRITING) {
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if (chip->state != mode) {
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/* Someone's suspended the write. Sleep */
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DECLARE_WAITQUEUE(wait, current);
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@ -1401,7 +1316,7 @@ static int cfi_intelext_write_words (struct mtd_info *mtd, loff_t to , size_t le
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datum = map_word_load_partial(map, datum, buf, gap, n);
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ret = do_write_oneword(map, &cfi->chips[chipnum],
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bus_ofs, datum);
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bus_ofs, datum, FL_WRITING);
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if (ret)
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return ret;
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@ -1422,7 +1337,7 @@ static int cfi_intelext_write_words (struct mtd_info *mtd, loff_t to , size_t le
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map_word datum = map_word_load(map, buf);
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ret = do_write_oneword(map, &cfi->chips[chipnum],
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ofs, datum);
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ofs, datum, FL_WRITING);
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if (ret)
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return ret;
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@ -1446,7 +1361,7 @@ static int cfi_intelext_write_words (struct mtd_info *mtd, loff_t to , size_t le
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datum = map_word_load_partial(map, datum, buf, 0, len);
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ret = do_write_oneword(map, &cfi->chips[chipnum],
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ofs, datum);
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ofs, datum, FL_WRITING);
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if (ret)
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return ret;
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@ -2036,6 +1951,262 @@ static int cfi_intelext_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
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return ret;
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}
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#ifdef CONFIG_MTD_OTP
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typedef int (*otp_op_t)(struct map_info *map, struct flchip *chip,
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u_long data_offset, u_char *buf, u_int size,
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u_long prot_offset, u_int groupno, u_int groupsize);
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static int __xipram
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do_otp_read(struct map_info *map, struct flchip *chip, u_long offset,
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u_char *buf, u_int size, u_long prot, u_int grpno, u_int grpsz)
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{
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struct cfi_private *cfi = map->fldrv_priv;
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int ret;
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spin_lock(chip->mutex);
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ret = get_chip(map, chip, chip->start, FL_JEDEC_QUERY);
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if (ret) {
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spin_unlock(chip->mutex);
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return ret;
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}
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/* let's ensure we're not reading back cached data from array mode */
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if (map->inval_cache)
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map->inval_cache(map, chip->start + offset, size);
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xip_disable(map, chip, chip->start);
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if (chip->state != FL_JEDEC_QUERY) {
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map_write(map, CMD(0x90), chip->start);
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chip->state = FL_JEDEC_QUERY;
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}
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map_copy_from(map, buf, chip->start + offset, size);
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xip_enable(map, chip, chip->start);
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/* then ensure we don't keep OTP data in the cache */
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if (map->inval_cache)
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map->inval_cache(map, chip->start + offset, size);
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put_chip(map, chip, chip->start);
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spin_unlock(chip->mutex);
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return 0;
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}
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static int
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do_otp_write(struct map_info *map, struct flchip *chip, u_long offset,
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u_char *buf, u_int size, u_long prot, u_int grpno, u_int grpsz)
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{
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int ret;
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while (size) {
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unsigned long bus_ofs = offset & ~(map_bankwidth(map)-1);
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int gap = offset - bus_ofs;
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int n = min_t(int, size, map_bankwidth(map)-gap);
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map_word datum = map_word_ff(map);
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datum = map_word_load_partial(map, datum, buf, gap, n);
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ret = do_write_oneword(map, chip, bus_ofs, datum, FL_OTP_WRITE);
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if (ret)
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return ret;
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offset += n;
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buf += n;
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size -= n;
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}
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return 0;
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}
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static int
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do_otp_lock(struct map_info *map, struct flchip *chip, u_long offset,
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u_char *buf, u_int size, u_long prot, u_int grpno, u_int grpsz)
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{
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struct cfi_private *cfi = map->fldrv_priv;
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map_word datum;
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/* make sure area matches group boundaries */
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if (offset != 0 || size != grpsz)
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return -EXDEV;
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datum = map_word_ff(map);
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datum = map_word_clr(map, datum, CMD(1 << grpno));
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return do_write_oneword(map, chip, prot, datum, FL_OTP_WRITE);
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}
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static int cfi_intelext_otp_walk(struct mtd_info *mtd, loff_t from, size_t len,
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size_t *retlen, u_char *buf,
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otp_op_t action, int user_regs)
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{
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struct map_info *map = mtd->priv;
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struct cfi_private *cfi = map->fldrv_priv;
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struct cfi_pri_intelext *extp = cfi->cmdset_priv;
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struct flchip *chip;
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struct cfi_intelext_otpinfo *otp;
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u_long devsize, reg_prot_offset, data_offset;
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u_int chip_num, chip_step, field, reg_fact_size, reg_user_size;
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u_int groups, groupno, groupsize, reg_fact_groups, reg_user_groups;
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int ret;
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*retlen = 0;
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/* Check that we actually have some OTP registers */
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if (!extp || !(extp->FeatureSupport & 64) || !extp->NumProtectionFields)
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return -ENODATA;
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/* we need real chips here not virtual ones */
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devsize = (1 << cfi->cfiq->DevSize) * cfi->interleave;
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chip_step = devsize >> cfi->chipshift;
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for (chip_num = 0; chip_num < cfi->numchips; chip_num += chip_step) {
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chip = &cfi->chips[chip_num];
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otp = (struct cfi_intelext_otpinfo *)&extp->extra[0];
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/* first OTP region */
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field = 0;
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reg_prot_offset = extp->ProtRegAddr;
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reg_fact_groups = 1;
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reg_fact_size = 1 << extp->FactProtRegSize;
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reg_user_groups = 1;
|
||||
reg_user_size = 1 << extp->UserProtRegSize;
|
||||
|
||||
while (len > 0) {
|
||||
/* flash geometry fixup */
|
||||
data_offset = reg_prot_offset + 1;
|
||||
data_offset *= cfi->interleave * cfi->device_type;
|
||||
reg_prot_offset *= cfi->interleave * cfi->device_type;
|
||||
reg_fact_size *= cfi->interleave;
|
||||
reg_user_size *= cfi->interleave;
|
||||
|
||||
if (user_regs) {
|
||||
groups = reg_user_groups;
|
||||
groupsize = reg_user_size;
|
||||
/* skip over factory reg area */
|
||||
groupno = reg_fact_groups;
|
||||
data_offset += reg_fact_groups * reg_fact_size;
|
||||
} else {
|
||||
groups = reg_fact_groups;
|
||||
groupsize = reg_fact_size;
|
||||
groupno = 0;
|
||||
}
|
||||
|
||||
while (groups > 0) {
|
||||
if (!action) {
|
||||
/*
|
||||
* Special case: if action is NULL
|
||||
* we fill buf with otp_info records.
|
||||
*/
|
||||
struct otp_info *otpinfo;
|
||||
map_word lockword;
|
||||
len -= sizeof(struct otp_info);
|
||||
if (len <= 0)
|
||||
return -ENOSPC;
|
||||
ret = do_otp_read(map, chip,
|
||||
reg_prot_offset,
|
||||
(u_char *)&lockword,
|
||||
map_bankwidth(map),
|
||||
0, 0, 0);
|
||||
if (ret)
|
||||
return ret;
|
||||
otpinfo = (struct otp_info *)buf;
|
||||
otpinfo->start = from;
|
||||
otpinfo->length = groupsize;
|
||||
otpinfo->locked =
|
||||
!map_word_bitsset(map, lockword,
|
||||
CMD(1 << groupno));
|
||||
from += groupsize;
|
||||
buf += sizeof(*otpinfo);
|
||||
*retlen += sizeof(*otpinfo);
|
||||
} else if (from >= groupsize) {
|
||||
from -= groupsize;
|
||||
} else {
|
||||
int size = groupsize;
|
||||
data_offset += from;
|
||||
size -= from;
|
||||
from = 0;
|
||||
if (size > len)
|
||||
size = len;
|
||||
ret = action(map, chip, data_offset,
|
||||
buf, size, reg_prot_offset,
|
||||
groupno, groupsize);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
buf += size;
|
||||
len -= size;
|
||||
*retlen += size;
|
||||
}
|
||||
groupno++;
|
||||
groups--;
|
||||
}
|
||||
|
||||
/* next OTP region */
|
||||
if (++field == extp->NumProtectionFields)
|
||||
break;
|
||||
reg_prot_offset = otp->ProtRegAddr;
|
||||
reg_fact_groups = otp->FactGroups;
|
||||
reg_fact_size = 1 << otp->FactProtRegSize;
|
||||
reg_user_groups = otp->UserGroups;
|
||||
reg_user_size = 1 << otp->UserProtRegSize;
|
||||
otp++;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int cfi_intelext_read_fact_prot_reg(struct mtd_info *mtd, loff_t from,
|
||||
size_t len, size_t *retlen,
|
||||
u_char *buf)
|
||||
{
|
||||
return cfi_intelext_otp_walk(mtd, from, len, retlen,
|
||||
buf, do_otp_read, 0);
|
||||
}
|
||||
|
||||
static int cfi_intelext_read_user_prot_reg(struct mtd_info *mtd, loff_t from,
|
||||
size_t len, size_t *retlen,
|
||||
u_char *buf)
|
||||
{
|
||||
return cfi_intelext_otp_walk(mtd, from, len, retlen,
|
||||
buf, do_otp_read, 1);
|
||||
}
|
||||
|
||||
static int cfi_intelext_write_user_prot_reg(struct mtd_info *mtd, loff_t from,
|
||||
size_t len, size_t *retlen,
|
||||
u_char *buf)
|
||||
{
|
||||
return cfi_intelext_otp_walk(mtd, from, len, retlen,
|
||||
buf, do_otp_write, 1);
|
||||
}
|
||||
|
||||
static int cfi_intelext_lock_user_prot_reg(struct mtd_info *mtd,
|
||||
loff_t from, size_t len)
|
||||
{
|
||||
size_t retlen;
|
||||
return cfi_intelext_otp_walk(mtd, from, len, &retlen,
|
||||
NULL, do_otp_lock, 1);
|
||||
}
|
||||
|
||||
static int cfi_intelext_get_fact_prot_info(struct mtd_info *mtd,
|
||||
struct otp_info *buf, size_t len)
|
||||
{
|
||||
size_t retlen;
|
||||
int ret;
|
||||
|
||||
ret = cfi_intelext_otp_walk(mtd, 0, len, &retlen, (u_char *)buf, NULL, 0);
|
||||
return ret ? : retlen;
|
||||
}
|
||||
|
||||
static int cfi_intelext_get_user_prot_info(struct mtd_info *mtd,
|
||||
struct otp_info *buf, size_t len)
|
||||
{
|
||||
size_t retlen;
|
||||
int ret;
|
||||
|
||||
ret = cfi_intelext_otp_walk(mtd, 0, len, &retlen, (u_char *)buf, NULL, 1);
|
||||
return ret ? : retlen;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
static int cfi_intelext_suspend(struct mtd_info *mtd)
|
||||
{
|
||||
struct map_info *map = mtd->priv;
|
||||
|
|
|
|||
|
|
@ -5,7 +5,7 @@
|
|||
*
|
||||
* This code is GPL
|
||||
*
|
||||
* $Id: mtdpart.c,v 1.51 2004/11/16 18:28:59 dwmw2 Exp $
|
||||
* $Id: mtdpart.c,v 1.53 2005/02/08 17:11:13 nico Exp $
|
||||
*
|
||||
* 02-21-2002 Thomas Gleixner <gleixner@autronix.de>
|
||||
* added support for read_oob, write_oob
|
||||
|
|
@ -116,6 +116,13 @@ static int part_read_user_prot_reg (struct mtd_info *mtd, loff_t from, size_t le
|
|||
len, retlen, buf);
|
||||
}
|
||||
|
||||
static int part_get_user_prot_info (struct mtd_info *mtd,
|
||||
struct otp_info *buf, size_t len)
|
||||
{
|
||||
struct mtd_part *part = PART(mtd);
|
||||
return part->master->get_user_prot_info (part->master, buf, len);
|
||||
}
|
||||
|
||||
static int part_read_fact_prot_reg (struct mtd_info *mtd, loff_t from, size_t len,
|
||||
size_t *retlen, u_char *buf)
|
||||
{
|
||||
|
|
@ -124,6 +131,13 @@ static int part_read_fact_prot_reg (struct mtd_info *mtd, loff_t from, size_t le
|
|||
len, retlen, buf);
|
||||
}
|
||||
|
||||
static int part_get_fact_prot_info (struct mtd_info *mtd,
|
||||
struct otp_info *buf, size_t len)
|
||||
{
|
||||
struct mtd_part *part = PART(mtd);
|
||||
return part->master->get_fact_prot_info (part->master, buf, len);
|
||||
}
|
||||
|
||||
static int part_write (struct mtd_info *mtd, loff_t to, size_t len,
|
||||
size_t *retlen, const u_char *buf)
|
||||
{
|
||||
|
|
@ -182,6 +196,12 @@ static int part_write_user_prot_reg (struct mtd_info *mtd, loff_t from, size_t l
|
|||
len, retlen, buf);
|
||||
}
|
||||
|
||||
static int part_lock_user_prot_reg (struct mtd_info *mtd, loff_t from, size_t len)
|
||||
{
|
||||
struct mtd_part *part = PART(mtd);
|
||||
return part->master->lock_user_prot_reg (part->master, from, len);
|
||||
}
|
||||
|
||||
static int part_writev (struct mtd_info *mtd, const struct kvec *vecs,
|
||||
unsigned long count, loff_t to, size_t *retlen)
|
||||
{
|
||||
|
|
@ -409,6 +429,12 @@ int add_mtd_partitions(struct mtd_info *master,
|
|||
slave->mtd.read_fact_prot_reg = part_read_fact_prot_reg;
|
||||
if(master->write_user_prot_reg)
|
||||
slave->mtd.write_user_prot_reg = part_write_user_prot_reg;
|
||||
if(master->lock_user_prot_reg)
|
||||
slave->mtd.lock_user_prot_reg = part_lock_user_prot_reg;
|
||||
if(master->get_user_prot_info)
|
||||
slave->mtd.get_user_prot_info = part_get_user_prot_info;
|
||||
if(master->get_fact_prot_info)
|
||||
slave->mtd.get_fact_prot_info = part_get_fact_prot_info;
|
||||
if (master->sync)
|
||||
slave->mtd.sync = part_sync;
|
||||
if (!i && master->suspend && master->resume) {
|
||||
|
|
|
|||
|
|
@ -1,7 +1,7 @@
|
|||
|
||||
/* Common Flash Interface structures
|
||||
* See http://support.intel.com/design/flash/technote/index.htm
|
||||
* $Id: cfi.h,v 1.51 2005/02/05 02:06:16 nico Exp $
|
||||
* $Id: cfi.h,v 1.52 2005/02/08 17:11:15 nico Exp $
|
||||
*/
|
||||
|
||||
#ifndef __MTD_CFI_H__
|
||||
|
|
@ -252,7 +252,7 @@ static inline uint32_t cfi_build_cmd_addr(uint32_t cmd_ofs, int interleave, int
|
|||
* It looks too long to be inline, but in the common case it should almost all
|
||||
* get optimised away.
|
||||
*/
|
||||
static inline map_word cfi_build_cmd(u_char cmd, struct map_info *map, struct cfi_private *cfi)
|
||||
static inline map_word cfi_build_cmd(u_long cmd, struct map_info *map, struct cfi_private *cfi)
|
||||
{
|
||||
map_word val = { {0} };
|
||||
int wordwidth, words_per_bus, chip_mode, chips_per_word;
|
||||
|
|
|
|||
|
|
@ -6,7 +6,7 @@
|
|||
*
|
||||
* (C) 2000 Red Hat. GPLd.
|
||||
*
|
||||
* $Id: flashchip.h,v 1.15 2004/11/05 22:41:06 nico Exp $
|
||||
* $Id: flashchip.h,v 1.16 2005/02/08 17:11:15 nico Exp $
|
||||
*
|
||||
*/
|
||||
|
||||
|
|
@ -29,6 +29,7 @@ typedef enum {
|
|||
FL_ERASE_SUSPENDED,
|
||||
FL_WRITING,
|
||||
FL_WRITING_TO_BUFFER,
|
||||
FL_OTP_WRITE,
|
||||
FL_WRITE_SUSPENDING,
|
||||
FL_WRITE_SUSPENDED,
|
||||
FL_PM_SUSPENDED,
|
||||
|
|
|
|||
|
|
@ -1,6 +1,6 @@
|
|||
|
||||
/* Overhauled routines for dealing with different mmap regions of flash */
|
||||
/* $Id: map.h,v 1.46 2005/01/05 17:09:44 dwmw2 Exp $ */
|
||||
/* $Id: map.h,v 1.47 2005/02/08 17:11:15 nico Exp $ */
|
||||
|
||||
#ifndef __LINUX_MTD_MAP_H__
|
||||
#define __LINUX_MTD_MAP_H__
|
||||
|
|
@ -263,6 +263,17 @@ static inline map_word map_word_and(struct map_info *map, map_word val1, map_wor
|
|||
return r;
|
||||
}
|
||||
|
||||
static inline map_word map_word_clr(struct map_info *map, map_word val1, map_word val2)
|
||||
{
|
||||
map_word r;
|
||||
int i;
|
||||
|
||||
for (i=0; i<map_words(map); i++) {
|
||||
r.x[i] = val1.x[i] & ~val2.x[i];
|
||||
}
|
||||
return r;
|
||||
}
|
||||
|
||||
static inline map_word map_word_or(struct map_info *map, map_word val1, map_word val2)
|
||||
{
|
||||
map_word r;
|
||||
|
|
@ -273,6 +284,7 @@ static inline map_word map_word_or(struct map_info *map, map_word val1, map_word
|
|||
}
|
||||
return r;
|
||||
}
|
||||
|
||||
#define map_word_andequal(m, a, b, z) map_word_equal(m, z, map_word_and(m, a, b))
|
||||
|
||||
static inline int map_word_bitsset(struct map_info *map, map_word val1, map_word val2)
|
||||
|
|
@ -338,6 +350,7 @@ static inline map_word map_word_ff(struct map_info *map)
|
|||
}
|
||||
return r;
|
||||
}
|
||||
|
||||
static inline map_word inline_map_read(struct map_info *map, unsigned long ofs)
|
||||
{
|
||||
map_word r;
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
/*
|
||||
* $Id: mtd.h,v 1.56 2004/08/09 18:46:04 dmarlin Exp $
|
||||
* $Id: mtd.h,v 1.57 2005/02/08 17:11:15 nico Exp $
|
||||
*
|
||||
* Copyright (C) 1999-2003 David Woodhouse <dwmw2@infradead.org> et al.
|
||||
*
|
||||
|
|
@ -113,12 +113,12 @@ struct mtd_info {
|
|||
* flash devices. The user data is one time programmable but the
|
||||
* factory data is read only.
|
||||
*/
|
||||
int (*read_user_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
|
||||
|
||||
int (*get_fact_prot_info) (struct mtd_info *mtd, struct otp_info *buf, size_t len);
|
||||
int (*read_fact_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
|
||||
|
||||
/* This function is not yet implemented */
|
||||
int (*get_user_prot_info) (struct mtd_info *mtd, struct otp_info *buf, size_t len);
|
||||
int (*read_user_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
|
||||
int (*write_user_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
|
||||
int (*lock_user_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len);
|
||||
|
||||
/* kvec-based read/write methods. We need these especially for NAND flash,
|
||||
with its limited number of write cycles per erase.
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
/*
|
||||
* $Id: mtd-abi.h,v 1.7 2004/11/23 15:37:32 gleixner Exp $
|
||||
* $Id: mtd-abi.h,v 1.8 2005/02/08 17:11:16 nico Exp $
|
||||
*
|
||||
* Portions of MTD ABI definition which are shared by kernel and user space
|
||||
*/
|
||||
|
|
@ -80,6 +80,12 @@ struct region_info_user {
|
|||
uint32_t regionindex;
|
||||
};
|
||||
|
||||
struct otp_info {
|
||||
uint32_t start;
|
||||
uint32_t length;
|
||||
uint32_t locked;
|
||||
};
|
||||
|
||||
#define MEMGETINFO _IOR('M', 1, struct mtd_info_user)
|
||||
#define MEMERASE _IOW('M', 2, struct erase_info_user)
|
||||
#define MEMWRITEOOB _IOWR('M', 3, struct mtd_oob_buf)
|
||||
|
|
|
|||
Loading…
Reference in New Issue