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path: root/drivers/mtd/maps/bcm963xx-flash.c
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Diffstat (limited to 'drivers/mtd/maps/bcm963xx-flash.c')
-rw-r--r--drivers/mtd/maps/bcm963xx-flash.c153
1 files changed, 3 insertions, 150 deletions
diff --git a/drivers/mtd/maps/bcm963xx-flash.c b/drivers/mtd/maps/bcm963xx-flash.c
index e5e3c0a..8302648 100644
--- a/drivers/mtd/maps/bcm963xx-flash.c
+++ b/drivers/mtd/maps/bcm963xx-flash.c
@@ -27,16 +27,10 @@
#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 */
-
-static struct mtd_partition *parsed_parts;
static struct mtd_info *bcm963xx_mtd_info;
@@ -45,134 +39,11 @@ static struct map_info bcm963xx_map = {
.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]);
-
- pr_info("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++)
- pr_info("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));
-
- pr_info("Spare partition is offset %x 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 const char *part_types[] = { "bcm63xxpart", NULL };
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);
@@ -208,26 +79,8 @@ static int bcm963xx_probe(struct platform_device *pdev)
probe_ok:
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 mtd_device_register(bcm963xx_mtd_info, parsed_parts,
- parsed_nr_parts);
-
+ return mtd_device_parse_register(bcm963xx_mtd_info, part_types, NULL,
+ NULL, 0);
err_probe:
iounmap(bcm963xx_map.virt);
return err;
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