bcm53xx: use bcm47xx_nvram.c with the latest patches

This will be hopefully a mainline version.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

SVN-Revision: 45204

target/linux/bcm53xx/files/drivers/firmware/broadcom/bcm47xx_nvram.c

@@ -11,6 +11,7 @@
  * option) any later version.
  */
 
+#include <linux/io.h>
 #include <linux/types.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
@@ -19,7 +20,7 @@
 #include <linux/bcm47xx_nvram.h>
 
 #define NVRAM_MAGIC			0x48534C46	/* 'FLSH' */
-#define NVRAM_SPACE			0x8000
+#define NVRAM_SPACE			0x10000
 #define NVRAM_MAX_GPIO_ENTRIES		32
 #define NVRAM_MAX_GPIO_VALUE_LEN	30
 
@@ -138,36 +139,28 @@ static int nvram_init(void)
 	struct mtd_info *mtd;
 	struct nvram_header header;
 	size_t bytes_read;
-	int err, i;
+	int err;
 
 	mtd = get_mtd_device_nm("nvram");
 	if (IS_ERR(mtd))
 		return -ENODEV;
 
-	for (i = 0; i < ARRAY_SIZE(nvram_sizes); i++) {
-		loff_t from = mtd->size - nvram_sizes[i];
-
-		if (from < 0)
-			continue;
-
-		err = mtd_read(mtd, from, sizeof(header), &bytes_read,
-			       (uint8_t *)&header);
-		if (!err && header.magic == NVRAM_MAGIC) {
-			u8 *dst = (uint8_t *)nvram_buf;
-			size_t len = header.len;
+	err = mtd_read(mtd, 0, sizeof(header), &bytes_read, (uint8_t *)&header);
+	if (!err && header.magic == NVRAM_MAGIC) {
+		u8 *dst = (uint8_t *)nvram_buf;
+		size_t len = header.len;
 
-			if (header.len > NVRAM_SPACE) {
-				pr_err("nvram on flash (%i bytes) is bigger than the reserved space in memory, will just copy the first %i bytes\n",
-				       header.len, NVRAM_SPACE);
-				len = NVRAM_SPACE;
-			}
+		if (header.len > NVRAM_SPACE) {
+			pr_err("nvram on flash (%i bytes) is bigger than the reserved space in memory, will just copy the first %i bytes\n",
+				header.len, NVRAM_SPACE);
+			len = NVRAM_SPACE;
+		}
 
-			err = mtd_read(mtd, from, len, &bytes_read, dst);
-			if (err)
-				return err;
+		err = mtd_read(mtd, 0, len, &bytes_read, dst);
+		if (err)
+			return err;
 
-			return 0;
-		}
+		return 0;
 	}
 #endif
 

target/linux/bcm53xx/patches-3.18/110-firmware-backport-NVRAM-driver.patch

@@ -8,14 +8,13 @@ Content-Transfer-Encoding: 8bit
 
 Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
 ---
- arch/arm/Kconfig                          | 2 ++
- drivers/firmware/Kconfig                  | 1 +
- drivers/firmware/Makefile                 | 1 +
- drivers/firmware/broadcom/bcm47xx_nvram.c | 3 ++-
- drivers/net/ethernet/broadcom/b44.c       | 2 +-
- drivers/net/ethernet/broadcom/bgmac.c     | 2 +-
- drivers/ssb/driver_chipcommon_pmu.c       | 2 +-
- 7 files changed, 9 insertions(+), 4 deletions(-)
+ arch/arm/Kconfig                      | 2 ++
+ drivers/firmware/Kconfig              | 1 +
+ drivers/firmware/Makefile             | 1 +
+ drivers/net/ethernet/broadcom/b44.c   | 2 +-
+ drivers/net/ethernet/broadcom/bgmac.c | 2 +-
+ drivers/ssb/driver_chipcommon_pmu.c   | 2 +-
+ 6 files changed, 7 insertions(+), 3 deletions(-)
 
 diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
 index 4733d32..ab18030 100644
@@ -54,27 +53,6 @@ index 5373dc5..e251f2b 100644
  obj-$(CONFIG_GOOGLE_FIRMWARE)	+= google/
  obj-$(CONFIG_EFI)		+= efi/
  obj-$(CONFIG_UEFI_CPER)		+= efi/
-diff --git a/drivers/firmware/broadcom/bcm47xx_nvram.c b/drivers/firmware/broadcom/bcm47xx_nvram.c
-index b6e1cc7..8ca7358 100644
---- a/drivers/firmware/broadcom/bcm47xx_nvram.c
-+++ b/drivers/firmware/broadcom/bcm47xx_nvram.c
-@@ -11,6 +11,7 @@
-  * option) any later version.
-  */
- 
-+#include <linux/io.h>
- #include <linux/types.h>
- #include <linux/module.h>
- #include <linux/kernel.h>
-@@ -34,7 +35,7 @@ struct nvram_header {
- };
- 
- static char nvram_buf[NVRAM_SPACE];
--static const u32 nvram_sizes[] = {0x8000, 0xF000, 0x10000};
-+static const u32 nvram_sizes[] = {0x8000, 0xF000, 0x10000, 0x160000, 0x180000};
- 
- static u32 find_nvram_size(void __iomem *end)
- {
 diff --git a/drivers/net/ethernet/broadcom/b44.c b/drivers/net/ethernet/broadcom/b44.c
 index 8a7bf7d..bf3bcd6 100644
 --- a/drivers/net/ethernet/broadcom/b44.c