oops, patch was incomplete

target/brcm/patches/nvram.patch

@@ -1,5 +1,3 @@
-diff --git a/arch/mips/bcm47xx/Makefile b/arch/mips/bcm47xx/Makefile
-index 35294b1..7465e8a 100644
 --- a/arch/mips/bcm47xx/Makefile
 +++ b/arch/mips/bcm47xx/Makefile
 @@ -3,4 +3,4 @@
@@ -8,8 +6,107 @@ index 35294b1..7465e8a 100644
  
 -obj-y := gpio.o irq.o prom.o serial.o setup.o time.o wgt634u.o
 +obj-y := gpio.o irq.o nvram.o prom.o serial.o setup.o time.o wgt634u.o
-diff --git a/arch/mips/bcm47xx/setup.c b/arch/mips/bcm47xx/setup.c
-index d442e11..01e1661 100644
+--- /dev/null
++++ b/arch/mips/bcm47xx/nvram.c
+@@ -0,0 +1,98 @@
++/*
++ * BCM947xx nvram variable access
++ *
++ * Copyright 2005, Broadcom Corporation
++ * Copyright 2006, Felix Fietkau <nbd@openwrt.org>
++ * 
++ * 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.
++ */
++
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/ssb/ssb.h>
++#include <linux/kernel.h>
++#include <linux/string.h>
++#include <linux/interrupt.h>
++#include <linux/spinlock.h>
++#include <linux/slab.h>
++#include <asm/byteorder.h>
++#include <asm/bootinfo.h>
++#include <asm/addrspace.h>
++#include <asm/io.h>
++#include <asm/uaccess.h>
++#include <asm/mach-bcm47xx/nvram.h>
++#include <asm/mach-bcm47xx/bcm47xx.h>
++
++static char nvram_buf[NVRAM_SPACE];
++		
++/* Probe for NVRAM header */
++static void __init early_nvram_init(void)
++{
++	struct ssb_mipscore *mcore = &ssb_bcm47xx.mipscore;
++	struct nvram_header *header;
++	int i;
++	u32 base, lim, off;
++	u32 *src, *dst;
++	
++	base = mcore->flash_window;
++	lim = mcore->flash_window_size;
++
++	off = 0x20000;
++	while (off <= lim) {
++		/* Windowed flash access */
++		header = (struct nvram_header *) KSEG1ADDR(base + off - NVRAM_SPACE);
++		if (header->magic == NVRAM_HEADER)
++			goto found;
++		off <<= 1;
++	}
++
++	/* Try embedded NVRAM at 4 KB and 1 KB as last resorts */
++	header = (struct nvram_header *) KSEG1ADDR(base + 4096);
++	if (header->magic == NVRAM_HEADER)
++		goto found;
++	
++	header = (struct nvram_header *) KSEG1ADDR(base + 1024);
++	if (header->magic == NVRAM_HEADER)
++		goto found;
++	
++	return;
++
++found:
++	src = (u32 *) header;
++	dst = (u32 *) nvram_buf;
++	for (i = 0; i < sizeof(struct nvram_header); i += 4)
++		*dst++ = *src++;
++	for (; i < header->len && i < NVRAM_SPACE; i += 4)
++		*dst++ = le32_to_cpu(*src++);
++}
++
++char *nvram_get(const char *name)
++{
++	char *var, *value, *end, *eq;
++
++	if (!name)
++		return NULL;
++
++	if (!nvram_buf[0])
++		early_nvram_init();
++
++	/* Look for name=value and return value */
++	var = &nvram_buf[sizeof(struct nvram_header)];
++	end = nvram_buf + sizeof(nvram_buf) - 2;
++	end[0] = end[1] = '\0';
++	for (; *var; var = value + strlen(value) + 1) {
++		if (!(eq = strchr(var, '=')))
++			break;
++		value = eq + 1;
++		if ((eq - var) == strlen(name) &&
++			strncmp(var, name, (eq - var)) == 0)
++			return value;
++	}
++
++	return NULL;
++}
++
++EXPORT_SYMBOL(nvram_get);
 --- a/arch/mips/bcm47xx/setup.c
 +++ b/arch/mips/bcm47xx/setup.c
 @@ -33,6 +33,7 @@
@@ -84,3 +181,43 @@ index d442e11..01e1661 100644
  
  	return 0;
  }
+--- /dev/null
++++ b/arch/mips/include/asm/mach-bcm47xx/nvram.h
+@@ -0,0 +1,37 @@
++/*
++ *  Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
++ *
++ *  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.
++ */
++
++#ifndef __NVRAM_H
++#define __NVRAM_H
++
++struct nvram_header {
++	u32 magic;
++	u32 len;
++	u32 crc_ver_init;	/* 0:7 crc, 8:15 ver, 16:31 sdram_init */
++	u32 config_refresh;	/* 0:15 sdram_config, 16:31 sdram_refresh */
++	u32 config_ncdl;	/* ncdl values for memc */
++};
++
++struct nvram_tuple {
++	char *name;
++	char *value;
++	struct nvram_tuple *next;
++};
++
++#define NVRAM_HEADER		0x48534C46	/* 'FLSH' */
++#define NVRAM_VERSION		1
++#define NVRAM_HEADER_SIZE	20
++#define NVRAM_SPACE		0x8000
++
++#define NVRAM_MAX_VALUE_LEN 255
++#define NVRAM_MAX_PARAM_LEN 64
++
++char *nvram_get(const char *name);
++
++#endif