The patch below adds MTD support for the WGT634U machine by defining a
new platform_device for the flash.
Signed-off-by: Aurelien Jarno <aurelien@xxxxxxxxxxx>
---
arch/mips/bcm47xx/wgt634u.c | 69 +++++++++++++++++++++++++++++++++++++++++--
1 files changed, 66 insertions(+), 3 deletions(-)
diff --git a/arch/mips/bcm47xx/wgt634u.c b/arch/mips/bcm47xx/wgt634u.c
index 5a017ea..997e540 100644
--- a/arch/mips/bcm47xx/wgt634u.c
+++ b/arch/mips/bcm47xx/wgt634u.c
@@ -9,6 +9,7 @@
#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/leds.h>
+#include <linux/mtd/physmap.h>
#include <linux/ssb/ssb.h>
#include <asm/mach-bcm47xx/bcm47xx.h>
@@ -43,6 +44,61 @@ static struct platform_device wgt634u_gpio_leds = {
}
};
+
+/* 8MiB flash. The struct mtd_partition matches original Netgear WGT634U
+ firmware. */
+static struct mtd_partition wgt634u_partitions[] = {
+ {
+ .name = "cfe",
+ .offset = 0,
+ .size = 0x60000, /* 384k */
+ .mask_flags = MTD_WRITEABLE /* force read-only */
+ },
+ {
+ .name = "config",
+ .offset = 0x60000,
+ .size = 0x20000 /* 128k */
+ },
+ {
+ .name = "linux",
+ .offset = 0x80000,
+ .size = 0x140000 /* 1280k */
+ },
+ {
+ .name = "jffs",
+ .offset = 0x1c0000,
+ .size = 0x620000 /* 6272k */
+ },
+ {
+ .name = "nvram",
+ .offset = 0x7e0000,
+ .size = 0x20000 /* 128k */
+ },
+};
+
+static struct physmap_flash_data wgt634u_flash_data = {
+ .parts = wgt634u_partitions,
+ .nr_parts = ARRAY_SIZE(wgt634u_partitions)
+};
+
+static struct resource wgt634u_flash_resource = {
+ .flags = IORESOURCE_MEM,
+};
+
+static struct platform_device wgt634u_flash = {
+ .name = "physmap-flash",
+ .id = 0,
+ .dev = { .platform_data = &wgt634u_flash_data, },
+ .resource = &wgt634u_flash_resource,
+ .num_resources = 1,
+};
+
+/* Platform devices */
+static struct platform_device *wgt634u_devices[] __initdata = {
+ &wgt634u_flash,
+ &wgt634u_gpio_leds,
+};
+
static int __init wgt634u_init(void)
{
/* There is no easy way to detect that we are running on a WGT634U
@@ -54,9 +110,16 @@ static int __init wgt634u_init(void)
if (et0mac[0] == 0x00 &&
((et0mac[1] == 0x09 && et0mac[2] == 0x5b) ||
- (et0mac[1] == 0x0f && et0mac[2] == 0xb5)))
- return platform_device_register(&wgt634u_gpio_leds);
- else
+ (et0mac[1] == 0x0f && et0mac[2] == 0xb5))) {
+ struct ssb_mipscore *mcore = &ssb_bcm47xx.mipscore;
+ wgt634u_flash_data.width = mcore->flash_buswidth;
+ wgt634u_flash_resource.start = mcore->flash_window;
+ wgt634u_flash_resource.end = mcore->flash_window
+ + mcore->flash_window_size
+ - 1;
+ return platform_add_devices(wgt634u_devices,
+ ARRAY_SIZE(wgt634u_devices));
+ } else
return -ENODEV;
}
--
.''`. Aurelien Jarno | GPG: 1024D/F1BCDB73
: :' : Debian developer | Electrical Engineer
`. `' aurel32@xxxxxxxxxx | aurelien@xxxxxxxxxxx
`- people.debian.org/~aurel32 | www.aurel32.net
