This patchs enables the usage of mtd partitions passed as platform data from
platform setup functions.
Index: target/linux/ifxmips/files/drivers/mtd/maps/ifxmips.c
===================================================================
--- target/linux/ifxmips/files/drivers/mtd/maps/ifxmips.c (revision 24118)
+++ target/linux/ifxmips/files/drivers/mtd/maps/ifxmips.c (working copy)
@@ -24,6 +24,7 @@
#include <linux/init.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
+#include <linux/mtd/physmap.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/cfi.h>
#include <linux/magic.h>
@@ -93,7 +94,7 @@
spin_unlock_irqrestore(&ebu_lock, flags);
}
-static struct mtd_partition ifxmips_partitions[] = {
+static struct mtd_partition default_ifxmips_partitions[] = {
{
.name = "uboot",
.offset = 0x00000000,
@@ -168,8 +169,9 @@
struct mtd_partition *parts = NULL;
unsigned long uimage_size;
int err, i;
- int kernel_part = 2, rootfs_part = 3;
- int num_parts = ARRAY_SIZE(ifxmips_partitions);
+ int kernel_part = -1, rootfs_part = -1;
+ int num_parts = (dev->dev.platform_data ? ((struct physmap_flash_data *)(dev->dev.platform_data))->nr_parts : ARRAY_SIZE(default_ifxmips_partitions));
+ struct mtd_partition *ifxmips_partitions = (dev->dev.platform_data ? ((struct physmap_flash_data *)(dev->dev.platform_data))->parts : default_ifxmips_partitions);
ifxmips_w32(0x1d7ff, IFXMIPS_EBU_BUSCON0);
@@ -208,10 +210,16 @@
rootfs_part = i;
}
} else {
- /* if the flash is 64k sectors, the kernel will reside at 0xb0030000
- if the flash is 128k sectors, the kernel will reside at 0xb0040000 */
- ifxmips_partitions[1].size = ifxmips_mtd->erasesize;
- ifxmips_partitions[2].offset = ifxmips_partitions[1].offset + ifxmips_mtd->erasesize;
+ for (i = 0; i < num_parts; i++) {
+ if (strcmp(ifxmips_partitions[i].name, "kernel") == 0)
+ kernel_part = i;
+ if (strcmp(ifxmips_partitions[i].name, "rootfs") == 0)
+ rootfs_part = i;
+ }
+ if ((kernel_part != -1) && (!ifxmips_partitions[kernel_part].size))
+ ifxmips_partitions[kernel_part].size = ifxmips_mtd->erasesize;
+ if ((rootfs_part != -1) && (!ifxmips_partitions[rootfs_part].offset))
+ ifxmips_partitions[rootfs_part].offset = ifxmips_partitions[kernel_part].offset + ifxmips_mtd->erasesize;
parts = &ifxmips_partitions[0];
}
@@ -228,20 +236,29 @@
parts[kernel_part].size = uimage_size;
parts[rootfs_part].offset = parts[kernel_part].offset + parts[kernel_part].size;
- parts[rootfs_part].size = ((ifxmips_mtd->size >> 20) * 1024 * 1024) - parts[rootfs_part].offset;
+ if ((rootfs_part+1 < num_parts) && (parts[rootfs_part+1].offset))
+ parts[rootfs_part].size = parts[rootfs_part+1].offset - parts[rootfs_part].offset;
+ else
+ parts[rootfs_part].size = ((ifxmips_mtd->size >> 20) * 1024 * 1024) - parts[rootfs_part].offset;
ifxmips_meta_partition.offset = parts[kernel_part].offset;
ifxmips_meta_partition.size = parts[kernel_part].size + parts[rootfs_part].size;
}
if (err <= 0) {
- if (ifxmips_has_brn_block()) {
- parts[3].size -= ifxmips_mtd->erasesize;
- parts[4].offset = ifxmips_mtd->size - ifxmips_mtd->erasesize;
- parts[4].size = ifxmips_mtd->erasesize;
- ifxmips_meta_partition.size -= ifxmips_mtd->erasesize;
- } else {
- num_parts--;
+ if (rootfs_part+1 < num_parts){
+#if defined CONFIG_IFXMIPS_ARCAYDIAN_BRNBOOT
+ if (ifxmips_has_brn_block()) {
+ if (!parts[rootfs_part+1].offset){
+ parts[rootfs_part].size -= ifxmips_mtd->erasesize;
+ ifxmips_meta_partition.size -= ifxmips_mtd->erasesize;
+ parts[rootfs_part+1].offset = ifxmips_mtd->size - ifxmips_mtd->erasesize;
+ }
+ parts[rootfs_part+1].size = ifxmips_mtd->erasesize;
+ }
+ else
+#endif
+ num_parts--;
}
}
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