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-rw-r--r--drivers/mtd/maps/Kconfig9
-rw-r--r--drivers/mtd/maps/Makefile1
-rw-r--r--drivers/mtd/maps/bcm963xx-flash.c271
-rw-r--r--drivers/mtd/maps/gpio-addr-flash.c10
-rw-r--r--drivers/mtd/maps/pcmciamtd.c4
-rw-r--r--drivers/mtd/maps/physmap_of.c20
6 files changed, 299 insertions, 16 deletions
diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig
index 962212628f6e..a0dd7bba9481 100644
--- a/drivers/mtd/maps/Kconfig
+++ b/drivers/mtd/maps/Kconfig
@@ -251,6 +251,15 @@ config MTD_NETtel
help
Support for flash chips on NETtel/SecureEdge/SnapGear boards.
+config MTD_BCM963XX
+ tristate "Map driver for Broadcom BCM963xx boards"
+ depends on BCM63XX
+ select MTD_MAP_BANK_WIDTH_2
+ select MTD_CFI_I1
+ help
+ Support for parsing CFE image tag and creating MTD partitions on
+ Broadcom BCM63xx boards.
+
config MTD_DILNETPC
tristate "CFI Flash device mapped on DIL/Net PC"
depends on X86 && MTD_CONCAT && MTD_PARTITIONS && MTD_CFI_INTELEXT && BROKEN
diff --git a/drivers/mtd/maps/Makefile b/drivers/mtd/maps/Makefile
index f216bb573713..c7869c7a6b18 100644
--- a/drivers/mtd/maps/Makefile
+++ b/drivers/mtd/maps/Makefile
@@ -58,3 +58,4 @@ obj-$(CONFIG_MTD_BFIN_ASYNC) += bfin-async-flash.o
obj-$(CONFIG_MTD_RBTX4939) += rbtx4939-flash.o
obj-$(CONFIG_MTD_VMU) += vmu-flash.o
obj-$(CONFIG_MTD_GPIO_ADDR) += gpio-addr-flash.o
+obj-$(CONFIG_MTD_BCM963XX) += bcm963xx-flash.o
diff --git a/drivers/mtd/maps/bcm963xx-flash.c b/drivers/mtd/maps/bcm963xx-flash.c
new file mode 100644
index 000000000000..d175c120ee84
--- /dev/null
+++ b/drivers/mtd/maps/bcm963xx-flash.c
@@ -0,0 +1,271 @@
+/*
+ * Copyright © 2006-2008 Florian Fainelli <florian@openwrt.org>
+ * Mike Albon <malbon@openwrt.org>
+ * Copyright © 2009-2010 Daniel Dickinson <openwrt@cshore.neomailbox.net>
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/vmalloc.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+
+#include <asm/mach-bcm63xx/bcm963xx_tag.h>
+
+#define BCM63XX_BUSWIDTH 2 /* Buswidth */
+#define BCM63XX_EXTENDED_SIZE 0xBFC00000 /* Extended flash address */
+
+#define PFX KBUILD_MODNAME ": "
+
+static struct mtd_partition *parsed_parts;
+
+static struct mtd_info *bcm963xx_mtd_info;
+
+static struct map_info bcm963xx_map = {
+ .name = "bcm963xx",
+ .bankwidth = BCM63XX_BUSWIDTH,
+};
+
+static int parse_cfe_partitions(struct mtd_info *master,
+ struct mtd_partition **pparts)
+{
+ /* CFE, NVRAM and global Linux are always present */
+ int nrparts = 3, curpart = 0;
+ struct bcm_tag *buf;
+ struct mtd_partition *parts;
+ int ret;
+ size_t retlen;
+ unsigned int rootfsaddr, kerneladdr, spareaddr;
+ unsigned int rootfslen, kernellen, sparelen, totallen;
+ int namelen = 0;
+ int i;
+ char *boardid;
+ char *tagversion;
+
+ /* Allocate memory for buffer */
+ buf = vmalloc(sizeof(struct bcm_tag));
+ if (!buf)
+ return -ENOMEM;
+
+ /* Get the tag */
+ ret = master->read(master, master->erasesize, sizeof(struct bcm_tag),
+ &retlen, (void *)buf);
+ if (retlen != sizeof(struct bcm_tag)) {
+ vfree(buf);
+ return -EIO;
+ }
+
+ sscanf(buf->kernel_address, "%u", &kerneladdr);
+ sscanf(buf->kernel_length, "%u", &kernellen);
+ sscanf(buf->total_length, "%u", &totallen);
+ tagversion = &(buf->tag_version[0]);
+ boardid = &(buf->board_id[0]);
+
+ printk(KERN_INFO PFX "CFE boot tag found with version %s "
+ "and board type %s\n", tagversion, boardid);
+
+ kerneladdr = kerneladdr - BCM63XX_EXTENDED_SIZE;
+ rootfsaddr = kerneladdr + kernellen;
+ spareaddr = roundup(totallen, master->erasesize) + master->erasesize;
+ sparelen = master->size - spareaddr - master->erasesize;
+ rootfslen = spareaddr - rootfsaddr;
+
+ /* Determine number of partitions */
+ namelen = 8;
+ if (rootfslen > 0) {
+ nrparts++;
+ namelen += 6;
+ };
+ if (kernellen > 0) {
+ nrparts++;
+ namelen += 6;
+ };
+
+ /* Ask kernel for more memory */
+ parts = kzalloc(sizeof(*parts) * nrparts + 10 * nrparts, GFP_KERNEL);
+ if (!parts) {
+ vfree(buf);
+ return -ENOMEM;
+ };
+
+ /* Start building partition list */
+ parts[curpart].name = "CFE";
+ parts[curpart].offset = 0;
+ parts[curpart].size = master->erasesize;
+ curpart++;
+
+ if (kernellen > 0) {
+ parts[curpart].name = "kernel";
+ parts[curpart].offset = kerneladdr;
+ parts[curpart].size = kernellen;
+ curpart++;
+ };
+
+ if (rootfslen > 0) {
+ parts[curpart].name = "rootfs";
+ parts[curpart].offset = rootfsaddr;
+ parts[curpart].size = rootfslen;
+ if (sparelen > 0)
+ parts[curpart].size += sparelen;
+ curpart++;
+ };
+
+ parts[curpart].name = "nvram";
+ parts[curpart].offset = master->size - master->erasesize;
+ parts[curpart].size = master->erasesize;
+
+ /* Global partition "linux" to make easy firmware upgrade */
+ curpart++;
+ parts[curpart].name = "linux";
+ parts[curpart].offset = parts[0].size;
+ parts[curpart].size = master->size - parts[0].size - parts[3].size;
+
+ for (i = 0; i < nrparts; i++)
+ printk(KERN_INFO PFX "Partition %d is %s offset %lx and "
+ "length %lx\n", i, parts[i].name,
+ (long unsigned int)(parts[i].offset),
+ (long unsigned int)(parts[i].size));
+
+ printk(KERN_INFO PFX "Spare partition is %x offset and length %x\n",
+ spareaddr, sparelen);
+ *pparts = parts;
+ vfree(buf);
+
+ return nrparts;
+};
+
+static int bcm963xx_detect_cfe(struct mtd_info *master)
+{
+ int idoffset = 0x4e0;
+ static char idstring[8] = "CFE1CFE1";
+ char buf[9];
+ int ret;
+ size_t retlen;
+
+ ret = master->read(master, idoffset, 8, &retlen, (void *)buf);
+ buf[retlen] = 0;
+ printk(KERN_INFO PFX "Read Signature value of %s\n", buf);
+
+ return strncmp(idstring, buf, 8);
+}
+
+static int bcm963xx_probe(struct platform_device *pdev)
+{
+ int err = 0;
+ int parsed_nr_parts = 0;
+ char *part_type;
+ struct resource *r;
+
+ r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!r) {
+ dev_err(&pdev->dev, "no resource supplied\n");
+ return -ENODEV;
+ }
+
+ bcm963xx_map.phys = r->start;
+ bcm963xx_map.size = resource_size(r);
+ bcm963xx_map.virt = ioremap(r->start, resource_size(r));
+ if (!bcm963xx_map.virt) {
+ dev_err(&pdev->dev, "failed to ioremap\n");
+ return -EIO;
+ }
+
+ dev_info(&pdev->dev, "0x%08lx at 0x%08x\n",
+ bcm963xx_map.size, bcm963xx_map.phys);
+
+ simple_map_init(&bcm963xx_map);
+
+ bcm963xx_mtd_info = do_map_probe("cfi_probe", &bcm963xx_map);
+ if (!bcm963xx_mtd_info) {
+ dev_err(&pdev->dev, "failed to probe using CFI\n");
+ err = -EIO;
+ goto err_probe;
+ }
+
+ bcm963xx_mtd_info->owner = THIS_MODULE;
+
+ /* This is mutually exclusive */
+ if (bcm963xx_detect_cfe(bcm963xx_mtd_info) == 0) {
+ dev_info(&pdev->dev, "CFE bootloader detected\n");
+ if (parsed_nr_parts == 0) {
+ int ret = parse_cfe_partitions(bcm963xx_mtd_info,
+ &parsed_parts);
+ if (ret > 0) {
+ part_type = "CFE";
+ parsed_nr_parts = ret;
+ }
+ }
+ } else {
+ dev_info(&pdev->dev, "unsupported bootloader\n");
+ err = -ENODEV;
+ goto err_probe;
+ }
+
+ return add_mtd_partitions(bcm963xx_mtd_info, parsed_parts,
+ parsed_nr_parts);
+
+err_probe:
+ iounmap(bcm963xx_map.virt);
+ return err;
+}
+
+static int bcm963xx_remove(struct platform_device *pdev)
+{
+ if (bcm963xx_mtd_info) {
+ del_mtd_partitions(bcm963xx_mtd_info);
+ map_destroy(bcm963xx_mtd_info);
+ }
+
+ if (bcm963xx_map.virt) {
+ iounmap(bcm963xx_map.virt);
+ bcm963xx_map.virt = 0;
+ }
+
+ return 0;
+}
+
+static struct platform_driver bcm63xx_mtd_dev = {
+ .probe = bcm963xx_probe,
+ .remove = bcm963xx_remove,
+ .driver = {
+ .name = "bcm963xx-flash",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init bcm963xx_mtd_init(void)
+{
+ return platform_driver_register(&bcm63xx_mtd_dev);
+}
+
+static void __exit bcm963xx_mtd_exit(void)
+{
+ platform_driver_unregister(&bcm63xx_mtd_dev);
+}
+
+module_init(bcm963xx_mtd_init);
+module_exit(bcm963xx_mtd_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Broadcom BCM63xx MTD driver for CFE and RedBoot");
+MODULE_AUTHOR("Daniel Dickinson <openwrt@cshore.neomailbox.net>");
+MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
+MODULE_AUTHOR("Mike Albon <malbon@openwrt.org>");
diff --git a/drivers/mtd/maps/gpio-addr-flash.c b/drivers/mtd/maps/gpio-addr-flash.c
index 32e89d773b4e..af5707a80205 100644
--- a/drivers/mtd/maps/gpio-addr-flash.c
+++ b/drivers/mtd/maps/gpio-addr-flash.c
@@ -208,10 +208,14 @@ static int __devinit gpio_flash_probe(struct platform_device *pdev)
if (!state)
return -ENOMEM;
+ /*
+ * We cast start/end to known types in the boards file, so cast
+ * away their pointer types here to the known types (gpios->xxx).
+ */
state->gpio_count = gpios->end;
- state->gpio_addrs = (void *)gpios->start;
+ state->gpio_addrs = (void *)(unsigned long)gpios->start;
state->gpio_values = (void *)(state + 1);
- state->win_size = memory->end - memory->start + 1;
+ state->win_size = resource_size(memory);
memset(state->gpio_values, 0xff, arr_size);
state->map.name = DRIVER_NAME;
@@ -221,7 +225,7 @@ static int __devinit gpio_flash_probe(struct platform_device *pdev)
state->map.copy_to = gf_copy_to;
state->map.bankwidth = pdata->width;
state->map.size = state->win_size * (1 << state->gpio_count);
- state->map.virt = (void __iomem *)memory->start;
+ state->map.virt = ioremap_nocache(memory->start, state->map.size);
state->map.phys = NO_XIP;
state->map.map_priv_1 = (unsigned long)state;
diff --git a/drivers/mtd/maps/pcmciamtd.c b/drivers/mtd/maps/pcmciamtd.c
index 57a1acfe22c4..917022948399 100644
--- a/drivers/mtd/maps/pcmciamtd.c
+++ b/drivers/mtd/maps/pcmciamtd.c
@@ -640,10 +640,6 @@ static int pcmciamtd_config(struct pcmcia_device *link)
}
dev_info(&dev->p_dev->dev, "mtd%d: %s\n", mtd->index, mtd->name);
return 0;
-
- dev_err(&dev->p_dev->dev, "CS Error, exiting\n");
- pcmciamtd_release(link);
- return -ENODEV;
}
diff --git a/drivers/mtd/maps/physmap_of.c b/drivers/mtd/maps/physmap_of.c
index ec3edf6e68b4..9861814aa027 100644
--- a/drivers/mtd/maps/physmap_of.c
+++ b/drivers/mtd/maps/physmap_of.c
@@ -50,7 +50,7 @@ static int parse_obsolete_partitions(struct platform_device *dev,
{
int i, plen, nr_parts;
const struct {
- u32 offset, len;
+ __be32 offset, len;
} *part;
const char *names;
@@ -69,9 +69,9 @@ static int parse_obsolete_partitions(struct platform_device *dev,
names = of_get_property(dp, "partition-names", &plen);
for (i = 0; i < nr_parts; i++) {
- info->parts[i].offset = part->offset;
- info->parts[i].size = part->len & ~1;
- if (part->len & 1) /* bit 0 set signifies read only partition */
+ info->parts[i].offset = be32_to_cpu(part->offset);
+ info->parts[i].size = be32_to_cpu(part->len) & ~1;
+ if (be32_to_cpu(part->len) & 1) /* bit 0 set signifies read only partition */
info->parts[i].mask_flags = MTD_WRITEABLE;
if (names && (plen > 0)) {
@@ -226,11 +226,11 @@ static int __devinit of_flash_probe(struct platform_device *dev,
struct resource res;
struct of_flash *info;
const char *probe_type = match->data;
- const u32 *width;
+ const __be32 *width;
int err;
int i;
int count;
- const u32 *p;
+ const __be32 *p;
int reg_tuple_size;
struct mtd_info **mtd_list = NULL;
resource_size_t res_size;
@@ -267,9 +267,11 @@ static int __devinit of_flash_probe(struct platform_device *dev,
for (i = 0; i < count; i++) {
err = -ENXIO;
if (of_address_to_resource(dp, i, &res)) {
- dev_err(&dev->dev, "Can't get IO address from device"
- " tree\n");
- goto err_out;
+ /*
+ * Continue with next register tuple if this
+ * one is not mappable
+ */
+ continue;
}
dev_dbg(&dev->dev, "of_flash device: %.8llx-%.8llx\n",
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.