#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
+#include <linux/reboot.h>
#include <linux/mtd/compatmac.h>
#include <linux/mtd/map.h>
#include <linux/mtd/mtd.h>
static void cfi_amdstd_sync (struct mtd_info *);
static int cfi_amdstd_suspend (struct mtd_info *);
static void cfi_amdstd_resume (struct mtd_info *);
+static int cfi_amdstd_reboot(struct notifier_block *, unsigned long, void *);
static int cfi_amdstd_secsi_read (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
static void cfi_amdstd_destroy(struct mtd_info *);
mtd->flags |= MTD_POWERUP_LOCK;
}
+static void fixup_old_sst_eraseregion(struct mtd_info *mtd)
+{
+ struct map_info *map = mtd->priv;
+ struct cfi_private *cfi = map->fldrv_priv;
+
+ /*
+ * These flashes report two seperate eraseblock regions based on the
+ * sector_erase-size and block_erase-size, although they both operate on the
+ * same memory. This is not allowed according to CFI, so we just pick the
+ * sector_erase-size.
+ */
+ cfi->cfiq->NumEraseRegions = 1;
+}
+
+static void fixup_sst39vf(struct mtd_info *mtd, void *param)
+{
+ struct map_info *map = mtd->priv;
+ struct cfi_private *cfi = map->fldrv_priv;
+
+ fixup_old_sst_eraseregion(mtd);
+
+ cfi->addr_unlock1 = 0x5555;
+ cfi->addr_unlock2 = 0x2AAA;
+}
+
+static void fixup_sst39vf_rev_b(struct mtd_info *mtd, void *param)
+{
+ struct map_info *map = mtd->priv;
+ struct cfi_private *cfi = map->fldrv_priv;
+
+ fixup_old_sst_eraseregion(mtd);
+
+ cfi->addr_unlock1 = 0x555;
+ cfi->addr_unlock2 = 0x2AA;
+}
+
static void fixup_s29gl064n_sectors(struct mtd_info *mtd, void *param)
{
struct map_info *map = mtd->priv;
}
}
+/* Used to fix CFI-Tables of chips without Extended Query Tables */
+static struct cfi_fixup cfi_nopri_fixup_table[] = {
+ { CFI_MFR_SST, 0x234A, fixup_sst39vf, NULL, }, // SST39VF1602
+ { CFI_MFR_SST, 0x234B, fixup_sst39vf, NULL, }, // SST39VF1601
+ { CFI_MFR_SST, 0x235A, fixup_sst39vf, NULL, }, // SST39VF3202
+ { CFI_MFR_SST, 0x235B, fixup_sst39vf, NULL, }, // SST39VF3201
+ { CFI_MFR_SST, 0x235C, fixup_sst39vf_rev_b, NULL, }, // SST39VF3202B
+ { CFI_MFR_SST, 0x235D, fixup_sst39vf_rev_b, NULL, }, // SST39VF3201B
+ { CFI_MFR_SST, 0x236C, fixup_sst39vf_rev_b, NULL, }, // SST39VF6402B
+ { CFI_MFR_SST, 0x236D, fixup_sst39vf_rev_b, NULL, }, // SST39VF6401B
+ { 0, 0, NULL, NULL }
+};
+
static struct cfi_fixup cfi_fixup_table[] = {
{ CFI_MFR_ATMEL, CFI_ID_ANY, fixup_convert_atmel_pri, NULL },
#ifdef AMD_BOOTLOC_BUG
mtd->name = map->name;
mtd->writesize = 1;
+ mtd->reboot_notifier.notifier_call = cfi_amdstd_reboot;
+
if (cfi->cfi_mode==CFI_MODE_CFI){
unsigned char bootloc;
- /*
- * It's a real CFI chip, not one for which the probe
- * routine faked a CFI structure. So we read the feature
- * table from it.
- */
__u16 adr = primary?cfi->cfiq->P_ADR:cfi->cfiq->A_ADR;
struct cfi_pri_amdstd *extp;
extp = (struct cfi_pri_amdstd*)cfi_read_pri(map, adr, sizeof(*extp), "Amd/Fujitsu");
- if (!extp) {
- kfree(mtd);
- return NULL;
- }
-
- cfi_fixup_major_minor(cfi, extp);
-
- if (extp->MajorVersion != '1' ||
- (extp->MinorVersion < '0' || extp->MinorVersion > '4')) {
- printk(KERN_ERR " Unknown Amd/Fujitsu Extended Query "
- "version %c.%c.\n", extp->MajorVersion,
- extp->MinorVersion);
- kfree(extp);
- kfree(mtd);
- return NULL;
- }
+ if (extp) {
+ /*
+ * It's a real CFI chip, not one for which the probe
+ * routine faked a CFI structure.
+ */
+ cfi_fixup_major_minor(cfi, extp);
+
+ if (extp->MajorVersion != '1' ||
+ (extp->MinorVersion < '0' || extp->MinorVersion > '4')) {
+ printk(KERN_ERR " Unknown Amd/Fujitsu Extended Query "
+ "version %c.%c.\n", extp->MajorVersion,
+ extp->MinorVersion);
+ kfree(extp);
+ kfree(mtd);
+ return NULL;
+ }
- /* Install our own private info structure */
- cfi->cmdset_priv = extp;
+ /* Install our own private info structure */
+ cfi->cmdset_priv = extp;
- /* Apply cfi device specific fixups */
- cfi_fixup(mtd, cfi_fixup_table);
+ /* Apply cfi device specific fixups */
+ cfi_fixup(mtd, cfi_fixup_table);
#ifdef DEBUG_CFI_FEATURES
- /* Tell the user about it in lots of lovely detail */
- cfi_tell_features(extp);
+ /* Tell the user about it in lots of lovely detail */
+ cfi_tell_features(extp);
#endif
- bootloc = extp->TopBottom;
- if ((bootloc != 2) && (bootloc != 3)) {
- printk(KERN_WARNING "%s: CFI does not contain boot "
- "bank location. Assuming top.\n", map->name);
- bootloc = 2;
- }
+ bootloc = extp->TopBottom;
+ if ((bootloc < 2) || (bootloc > 5)) {
+ printk(KERN_WARNING "%s: CFI contains unrecognised boot "
+ "bank location (%d). Assuming bottom.\n",
+ map->name, bootloc);
+ bootloc = 2;
+ }
- if (bootloc == 3 && cfi->cfiq->NumEraseRegions > 1) {
- printk(KERN_WARNING "%s: Swapping erase regions for broken CFI table.\n", map->name);
+ if (bootloc == 3 && cfi->cfiq->NumEraseRegions > 1) {
+ printk(KERN_WARNING "%s: Swapping erase regions for top-boot CFI table.\n", map->name);
- for (i=0; i<cfi->cfiq->NumEraseRegions / 2; i++) {
- int j = (cfi->cfiq->NumEraseRegions-1)-i;
- __u32 swap;
+ for (i=0; i<cfi->cfiq->NumEraseRegions / 2; i++) {
+ int j = (cfi->cfiq->NumEraseRegions-1)-i;
+ __u32 swap;
- swap = cfi->cfiq->EraseRegionInfo[i];
- cfi->cfiq->EraseRegionInfo[i] = cfi->cfiq->EraseRegionInfo[j];
- cfi->cfiq->EraseRegionInfo[j] = swap;
+ swap = cfi->cfiq->EraseRegionInfo[i];
+ cfi->cfiq->EraseRegionInfo[i] = cfi->cfiq->EraseRegionInfo[j];
+ cfi->cfiq->EraseRegionInfo[j] = swap;
+ }
}
+ /* Set the default CFI lock/unlock addresses */
+ cfi->addr_unlock1 = 0x555;
+ cfi->addr_unlock2 = 0x2aa;
+ }
+ cfi_fixup(mtd, cfi_nopri_fixup_table);
+
+ if (!cfi->addr_unlock1 || !cfi->addr_unlock2) {
+ kfree(mtd);
+ return NULL;
}
- /* Set the default CFI lock/unlock addresses */
- cfi->addr_unlock1 = 0x555;
- cfi->addr_unlock2 = 0x2aa;
} /* CFI mode */
else if (cfi->cfi_mode == CFI_MODE_JEDEC) {
return cfi_amdstd_setup(mtd);
}
+struct mtd_info *cfi_cmdset_0006(struct map_info *map, int primary) __attribute__((alias("cfi_cmdset_0002")));
+struct mtd_info *cfi_cmdset_0701(struct map_info *map, int primary) __attribute__((alias("cfi_cmdset_0002")));
EXPORT_SYMBOL_GPL(cfi_cmdset_0002);
+EXPORT_SYMBOL_GPL(cfi_cmdset_0006);
+EXPORT_SYMBOL_GPL(cfi_cmdset_0701);
static struct mtd_info *cfi_amdstd_setup(struct mtd_info *mtd)
{
#endif
__module_get(THIS_MODULE);
+ register_reboot_notifier(&mtd->reboot_notifier);
return mtd;
setup_err:
chip->state = FL_READY;
return 0;
+ case FL_SHUTDOWN:
+ /* The machine is rebooting */
+ return -EIO;
+
case FL_POINT:
/* Only if there's no operation suspended... */
if (mode == FL_READY && chip->oldstate == FL_READY)
}
}
+
+/*
+ * Ensure that the flash device is put back into read array mode before
+ * unloading the driver or rebooting. On some systems, rebooting while
+ * the flash is in query/program/erase mode will prevent the CPU from
+ * fetching the bootloader code, requiring a hard reset or power cycle.
+ */
+static int cfi_amdstd_reset(struct mtd_info *mtd)
+{
+ struct map_info *map = mtd->priv;
+ struct cfi_private *cfi = map->fldrv_priv;
+ int i, ret;
+ struct flchip *chip;
+
+ for (i = 0; i < cfi->numchips; i++) {
+
+ chip = &cfi->chips[i];
+
+ mutex_lock(&chip->mutex);
+
+ ret = get_chip(map, chip, chip->start, FL_SHUTDOWN);
+ if (!ret) {
+ map_write(map, CMD(0xF0), chip->start);
+ chip->state = FL_SHUTDOWN;
+ put_chip(map, chip, chip->start);
+ }
+
+ mutex_unlock(&chip->mutex);
+ }
+
+ return 0;
+}
+
+
+static int cfi_amdstd_reboot(struct notifier_block *nb, unsigned long val,
+ void *v)
+{
+ struct mtd_info *mtd;
+
+ mtd = container_of(nb, struct mtd_info, reboot_notifier);
+ cfi_amdstd_reset(mtd);
+ return NOTIFY_DONE;
+}
+
+
static void cfi_amdstd_destroy(struct mtd_info *mtd)
{
struct map_info *map = mtd->priv;
struct cfi_private *cfi = map->fldrv_priv;
+ cfi_amdstd_reset(mtd);
+ unregister_reboot_notifier(&mtd->reboot_notifier);
kfree(cfi->cmdset_priv);
kfree(cfi->cfiq);
kfree(cfi);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Crossnet Co. <info@crossnet.co.jp> et al.");
MODULE_DESCRIPTION("MTD chip driver for AMD/Fujitsu flash chips");
+MODULE_ALIAS("cfi_cmdset_0006");
+MODULE_ALIAS("cfi_cmdset_0701");
git.openpandora.org / pandora-kernel.git / blobdiff