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Diffstat (limited to 'drivers/mtd/onenand/onenand_sim.c')
-rw-r--r--drivers/mtd/onenand/onenand_sim.c81
1 files changed, 74 insertions, 7 deletions
diff --git a/drivers/mtd/onenand/onenand_sim.c b/drivers/mtd/onenand/onenand_sim.c
index d64200b7c94b..f6e3c8aebd3a 100644
--- a/drivers/mtd/onenand/onenand_sim.c
+++ b/drivers/mtd/onenand/onenand_sim.c
@@ -6,6 +6,10 @@
* Copyright © 2005-2007 Samsung Electronics
* Kyungmin Park <kyungmin.park@samsung.com>
*
+ * Vishak G <vishak.g at samsung.com>, Rohit Hagargundgi <h.rohit at samsung.com>
+ * Flex-OneNAND simulator support
+ * Copyright (C) Samsung Electronics, 2008
+ *
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
@@ -24,16 +28,38 @@
#ifndef CONFIG_ONENAND_SIM_MANUFACTURER
#define CONFIG_ONENAND_SIM_MANUFACTURER 0xec
#endif
+
#ifndef CONFIG_ONENAND_SIM_DEVICE_ID
#define CONFIG_ONENAND_SIM_DEVICE_ID 0x04
#endif
+
+#define CONFIG_FLEXONENAND ((CONFIG_ONENAND_SIM_DEVICE_ID >> 9) & 1)
+
#ifndef CONFIG_ONENAND_SIM_VERSION_ID
#define CONFIG_ONENAND_SIM_VERSION_ID 0x1e
#endif
+#ifndef CONFIG_ONENAND_SIM_TECHNOLOGY_ID
+#define CONFIG_ONENAND_SIM_TECHNOLOGY_ID CONFIG_FLEXONENAND
+#endif
+
+/* Initial boundary values for Flex-OneNAND Simulator */
+#ifndef CONFIG_FLEXONENAND_SIM_DIE0_BOUNDARY
+#define CONFIG_FLEXONENAND_SIM_DIE0_BOUNDARY 0x01
+#endif
+
+#ifndef CONFIG_FLEXONENAND_SIM_DIE1_BOUNDARY
+#define CONFIG_FLEXONENAND_SIM_DIE1_BOUNDARY 0x01
+#endif
+
static int manuf_id = CONFIG_ONENAND_SIM_MANUFACTURER;
static int device_id = CONFIG_ONENAND_SIM_DEVICE_ID;
static int version_id = CONFIG_ONENAND_SIM_VERSION_ID;
+static int technology_id = CONFIG_ONENAND_SIM_TECHNOLOGY_ID;
+static int boundary[] = {
+ CONFIG_FLEXONENAND_SIM_DIE0_BOUNDARY,
+ CONFIG_FLEXONENAND_SIM_DIE1_BOUNDARY,
+};
struct onenand_flash {
void __iomem *base;
@@ -57,12 +83,18 @@ struct onenand_flash {
(writew(v, this->base + ONENAND_REG_WP_STATUS))
/* It has all 0xff chars */
-#define MAX_ONENAND_PAGESIZE (2048 + 64)
+#define MAX_ONENAND_PAGESIZE (4096 + 128)
static unsigned char *ffchars;
+#if CONFIG_FLEXONENAND
+#define PARTITION_NAME "Flex-OneNAND simulator partition"
+#else
+#define PARTITION_NAME "OneNAND simulator partition"
+#endif
+
static struct mtd_partition os_partitions[] = {
{
- .name = "OneNAND simulator partition",
+ .name = PARTITION_NAME,
.offset = 0,
.size = MTDPART_SIZ_FULL,
},
@@ -104,6 +136,7 @@ static void onenand_lock_handle(struct onenand_chip *this, int cmd)
switch (cmd) {
case ONENAND_CMD_UNLOCK:
+ case ONENAND_CMD_UNLOCK_ALL:
if (block_lock_scheme)
ONENAND_SET_WP_STATUS(ONENAND_WP_US, this);
else
@@ -228,10 +261,12 @@ static void onenand_data_handle(struct onenand_chip *this, int cmd,
{
struct mtd_info *mtd = &info->mtd;
struct onenand_flash *flash = this->priv;
- int main_offset, spare_offset;
+ int main_offset, spare_offset, die = 0;
void __iomem *src;
void __iomem *dest;
unsigned int i;
+ static int pi_operation;
+ int erasesize, rgn;
if (dataram) {
main_offset = mtd->writesize;
@@ -241,10 +276,27 @@ static void onenand_data_handle(struct onenand_chip *this, int cmd,
spare_offset = 0;
}
+ if (pi_operation) {
+ die = readw(this->base + ONENAND_REG_START_ADDRESS2);
+ die >>= ONENAND_DDP_SHIFT;
+ }
+
switch (cmd) {
+ case FLEXONENAND_CMD_PI_ACCESS:
+ pi_operation = 1;
+ break;
+
+ case ONENAND_CMD_RESET:
+ pi_operation = 0;
+ break;
+
case ONENAND_CMD_READ:
src = ONENAND_CORE(flash) + offset;
dest = ONENAND_MAIN_AREA(this, main_offset);
+ if (pi_operation) {
+ writew(boundary[die], this->base + ONENAND_DATARAM);
+ break;
+ }
memcpy(dest, src, mtd->writesize);
/* Fall through */
@@ -257,6 +309,10 @@ static void onenand_data_handle(struct onenand_chip *this, int cmd,
case ONENAND_CMD_PROG:
src = ONENAND_MAIN_AREA(this, main_offset);
dest = ONENAND_CORE(flash) + offset;
+ if (pi_operation) {
+ boundary[die] = readw(this->base + ONENAND_DATARAM);
+ break;
+ }
/* To handle partial write */
for (i = 0; i < (1 << mtd->subpage_sft); i++) {
int off = i * this->subpagesize;
@@ -284,9 +340,18 @@ static void onenand_data_handle(struct onenand_chip *this, int cmd,
break;
case ONENAND_CMD_ERASE:
- memset(ONENAND_CORE(flash) + offset, 0xff, mtd->erasesize);
+ if (pi_operation)
+ break;
+
+ if (FLEXONENAND(this)) {
+ rgn = flexonenand_region(mtd, offset);
+ erasesize = mtd->eraseregions[rgn].erasesize;
+ } else
+ erasesize = mtd->erasesize;
+
+ memset(ONENAND_CORE(flash) + offset, 0xff, erasesize);
memset(ONENAND_CORE_SPARE(flash, this, offset), 0xff,
- (mtd->erasesize >> 5));
+ (erasesize >> 5));
break;
default:
@@ -339,7 +404,7 @@ static void onenand_command_handle(struct onenand_chip *this, int cmd)
}
if (block != -1)
- offset += block << this->erase_shift;
+ offset = onenand_addr(this, block);
if (page != -1)
offset += page << this->page_shift;
@@ -390,6 +455,7 @@ static int __init flash_init(struct onenand_flash *flash)
}
density = device_id >> ONENAND_DEVICE_DENSITY_SHIFT;
+ density &= ONENAND_DEVICE_DENSITY_MASK;
size = ((16 << 20) << density);
ONENAND_CORE(flash) = vmalloc(size + (size >> 5));
@@ -405,8 +471,9 @@ static int __init flash_init(struct onenand_flash *flash)
writew(manuf_id, flash->base + ONENAND_REG_MANUFACTURER_ID);
writew(device_id, flash->base + ONENAND_REG_DEVICE_ID);
writew(version_id, flash->base + ONENAND_REG_VERSION_ID);
+ writew(technology_id, flash->base + ONENAND_REG_TECHNOLOGY);
- if (density < 2)
+ if (density < 2 && (!CONFIG_FLEXONENAND))
buffer_size = 0x0400; /* 1KiB page */
else
buffer_size = 0x0800; /* 2KiB page */