nvram_set sdram_ncdl 0x0
}
esac
- [ "$COMMIT" = "1" ] && nvram commit
}
start() {
nvram set il0macaddr=$(nvram get et0macaddr|
awk '{OFS=FS=":";for(x=7,y=2;--x;){$x=sprintf("%02x",(y+="0x"$x)%256);y/=256}print}')
}
+ [ "$COMMIT" = "1" ] && nvram commit
}
+++ /dev/null
-#
-# Copyright (C) 2009 Jo-Philipp Wich <xm@subsignal.org>
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
-
-include $(TOPDIR)/rules.mk
-
-PKG_NAME:=unvram
-PKG_RELEASE:=4
-
-PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
-
-include $(INCLUDE_DIR)/package.mk
-
-define Package/unvram
- SECTION:=utils
- CATEGORY:=Base system
- TITLE:=Userspace port of the Broadcom NVRAM manipulation tool
- DEPENDS:=@TARGET_brcm_2_4||@TARGET_brcm47xx
-endef
-
-define Package/unvram/description
- This package contains an utility to manipulate NVRAM on Broadcom based devices.
- It works on both brcm-2.4 and bcm47xx (Linux 2.6) without using the kernel api.
-endef
-
-define Build/Prepare
- mkdir -p $(PKG_BUILD_DIR)
- $(CP) ./src/* $(PKG_BUILD_DIR)/
-endef
-
-define Build/Configure
-endef
-
-define Build/Compile
- $(MAKE) -C $(PKG_BUILD_DIR) \
- CC="$(TARGET_CC)" \
- CFLAGS="$(TARGET_CFLAGS) -Wall" \
- LDFLAGS="$(TARGET_LDFLAGS)"
-endef
-
-define Package/unvram/install
- $(INSTALL_DIR) $(1)/etc/init.d
- $(INSTALL_BIN) ./files/nvram.init $(1)/etc/init.d/nvram
- $(INSTALL_DIR) $(1)/usr/sbin
- $(INSTALL_BIN) $(PKG_BUILD_DIR)/nvram $(1)/usr/sbin/
- $(INSTALL_DIR) $(1)/usr/lib
- $(INSTALL_BIN) $(PKG_BUILD_DIR)/libnvram.so.0.1 $(1)/usr/lib/
-endef
-
-$(eval $(call BuildPackage,unvram))
+++ /dev/null
-#!/bin/sh /etc/rc.common
-# NVRAM setup
-#
-# This file handles the NVRAM quirks of various hardware.
-
-START=02
-alias debug=${DEBUG:-:}
-
-nvram_default() {
- [ -z "$(nvram get $1)" ] && nvram set "$1=$2"
-}
-
-nvram_set() { # for the linksys fixup part
- [ "$(nvram get "$1")" = "$2" -a "$2" != "" ] || {
- COMMIT=1
- /usr/sbin/nvram set "$1=$2"
- }
-}
-
-fixup_linksys() {
- # work around braindead CFE defaults in linksys routers
- boardtype=$(nvram get boardtype)
- boardnum=$(nvram get boardnum)
- boardflags=$(($(nvram get boardflags)))
- adm_switch="$(( ($boardflags & 0x80) >> 7 ))"
-
- [ -n "$(nvram get vxkilled)" ] && boardtype=0 # don't mess with the ram settings on the hacked cfe
- case "$(( $boardtype ))" in
- "1800") #0x708
- if [ "$adm_switch" = 0 ]; then
- nvram_set sdram_init "$(printf 0x%04x $(( $(/usr/sbin/nvram get sdram_init) | 0x0100 )))"
- [ "$COMMIT" = 1 ] && {
- nvram_set clkfreq 216
- nvram_set sdram_ncdl 0x0
- nvram_set pa0itssit 62
- nvram_set pa0b0 0x15eb
- nvram_set pa0b1 0xfa82
- nvram_set pa0b2 0xfe66
- nvram_set pa0maxpwr 0x4e
- }
- fi
- ;;
- "1127") #0x467
- nvram_set sdram_init "$(printf 0x%04x $(( $(/usr/sbin/nvram get sdram_init) | 0x0100 )))"
- [ "$COMMIT" = 1 ] && {
- nvram_set sdram_ncdl 0x0
- nvram_set pa0itssit 62
- nvram_set pa0b0 0x168b
- nvram_set pa0b1 0xfabf
- nvram_set pa0b2 0xfeaf
- nvram_set pa0maxpwr 0x4e
- }
- ;;
- "1071") #0x042f
- nvram_set sdram_init "$(printf 0x%04x $(( $(/usr/sbin/nvram get sdram_init) | 0x0009 )))"
- [ "$COMMIT" = 1 ] && {
- nvram_set sdram_ncdl 0x0
- }
- esac
-}
-
-start() {
- fixup_linksys
-
- # OFDM Power Offset is set incorrectly on many boards.
- # Setting it to 0 will increase the tx power to normal levels.
- nvram_set opo 0x0
-
- [ "$(nvram get il0macaddr)" = "00:90:4c:5f:00:2a" ] && {
- # if default wifi mac, set two higher than the lan mac
- nvram set il0macaddr=$(nvram get et0macaddr|
- awk '{OFS=FS=":";for(x=7,y=2;--x;){$x=sprintf("%02x",(y+="0x"$x)%256);y/=256}print}')
- }
- [ "$COMMIT" = "1" ] && nvram commit
-}
+++ /dev/null
-CLI_FILENAME = nvram
-
-LIB_VERMAJOR = 0
-LIB_VERMINOR = 1
-LIB_FILENAME = libnvram.so
-
-LIB_CFLAGS = $(CFLAGS) -shared -fPIC
-LIB_LDFLAGS = $(LDFLAGS) -Wl,-soname,$(LIB_FILENAME).$(LIB_VERMAJOR).$(LIB_VERMINOR)
-
-CLI_CFLAGS = $(CFLAGS)
-CLI_LDFLAGS = $(LDFLAGS)
-
-CLI_OBJ = cli.o
-LIB_OBJ = crc.o nvram.o
-
-all: cli libnvram
-
-cli: libnvram
- $(CC) $(CLI_CFLAGS) -c -o cli.o cli.c
- $(CC) -o $(CLI_FILENAME) $(CLI_LDFLAGS) $(CLI_OBJ) \
- $(LIB_FILENAME).$(LIB_VERMAJOR).$(LIB_VERMINOR)
-
-cli.o: cli.c
- $(CC) $(CLI_CFLAGS) -c -o $@ $<
-
-libnvram:
- $(CC) $(LIB_CFLAGS) -c -o crc.o crc.c
- $(CC) $(LIB_CFLAGS) -c -o nvram.o nvram.c
- $(CC) $(LIB_CFLAGS) $(LIB_LDFLAGS) \
- -o $(LIB_FILENAME).$(LIB_VERMAJOR).$(LIB_VERMINOR) $(LIB_OBJ)
-
-clean:
- rm -f $(CLI_FILENAME) $(LIB_FILENAME)* *.o
+++ /dev/null
-/*
- * Command line interface for libnvram
- *
- * Copyright 2009, Jo-Philipp Wich <xm@subsignal.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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- *
- *
- * The libnvram code is based on Broadcom code for Linux 2.4.x .
- *
- */
-
-#include "nvram.h"
-
-
-static nvram_handle_t * nvram_open_rdonly(void)
-{
- const char *file = nvram_find_staging();
-
- if( file == NULL )
- file = nvram_find_mtd();
-
- if( file != NULL )
- return nvram_open(file, NVRAM_RO);
-
- return NULL;
-}
-
-static nvram_handle_t * nvram_open_staging(void)
-{
- if( nvram_find_staging() != NULL || nvram_to_staging() == 0 )
- return nvram_open(NVRAM_STAGING, NVRAM_RW);
-
- return NULL;
-}
-
-static int do_show(nvram_handle_t *nvram)
-{
- nvram_tuple_t *t;
- int stat = 1;
-
- if( (t = nvram_getall(nvram)) != NULL )
- {
- while( t )
- {
- printf("%s=%s\n", t->name, t->value);
- t = t->next;
- }
-
- stat = 0;
- }
-
- return stat;
-}
-
-static int do_get(nvram_handle_t *nvram, const char *var)
-{
- const char *val;
- int stat = 1;
-
- if( (val = nvram_get(nvram, var)) != NULL )
- {
- printf("%s\n", val);
- stat = 0;
- }
-
- return stat;
-}
-
-static int do_unset(nvram_handle_t *nvram, const char *var)
-{
- return nvram_unset(nvram, var);
-}
-
-static int do_set(nvram_handle_t *nvram, const char *pair)
-{
- char *val = strstr(pair, "=");
- char var[strlen(pair)];
- int stat = 1;
-
- if( val != NULL )
- {
- memset(var, 0, sizeof(var));
- strncpy(var, pair, (int)(val-pair));
- stat = nvram_set(nvram, var, (char *)(val + 1));
- }
-
- return stat;
-}
-
-static int do_info(nvram_handle_t *nvram)
-{
- nvram_header_t *hdr = nvram_header(nvram);
-
- /* CRC8 over the last 11 bytes of the header and data bytes */
- uint8_t crc = hndcrc8((unsigned char *) &hdr[0] + NVRAM_CRC_START_POSITION,
- hdr->len - NVRAM_CRC_START_POSITION, 0xff);
-
- /* Show info */
- printf("Magic: 0x%08X\n", hdr->magic);
- printf("Length: 0x%08X\n", hdr->len);
-
- printf("CRC8: 0x%02X (calculated: 0x%02X)\n",
- hdr->crc_ver_init & 0xFF, crc);
-
- printf("Version: 0x%02X\n", (hdr->crc_ver_init >> 8) & 0xFF);
- printf("SDRAM init: 0x%04X\n", (hdr->crc_ver_init >> 16) & 0xFFFF);
- printf("SDRAM config: 0x%04X\n", hdr->config_refresh & 0xFFFF);
- printf("SDRAM refresh: 0x%04X\n", (hdr->config_refresh >> 16) & 0xFFFF);
- printf("NCDL values: 0x%08X\n\n", hdr->config_ncdl);
-
- printf("%i bytes used / %i bytes available (%.2f%%)\n",
- hdr->len, NVRAM_SPACE - hdr->len,
- (100.00 / (double)NVRAM_SPACE) * (double)hdr->len);
-
- return 0;
-}
-
-
-int main( int argc, const char *argv[] )
-{
- nvram_handle_t *nvram;
- int commit = 0;
- int write = 0;
- int stat = 1;
- int done = 0;
- int i;
-
- /* Ugly... iterate over arguments to see whether we can expect a write */
- for( i = 1; i < argc; i++ )
- if( ( !strcmp(argv[i], "set") && ++i < argc ) ||
- ( !strcmp(argv[i], "unset") && ++i < argc ) ||
- !strcmp(argv[i], "commit") )
- {
- write = 1;
- break;
- }
-
-
- nvram = write ? nvram_open_staging() : nvram_open_rdonly();
-
- if( nvram != NULL && argc > 1 )
- {
- for( i = 1; i < argc; i++ )
- {
- if( !strcmp(argv[i], "show") )
- {
- stat = do_show(nvram);
- done++;
- }
- else if( !strcmp(argv[i], "info") )
- {
- stat = do_info(nvram);
- done++;
- }
- else if( !strcmp(argv[i], "get") && ++i < argc )
- {
- stat = do_get(nvram, argv[i]);
- done++;
- }
- else if( !strcmp(argv[i], "unset") && ++i < argc )
- {
- stat = do_unset(nvram, argv[i]);
- done++;
- }
- else if( !strcmp(argv[i], "set") && ++i < argc )
- {
- stat = do_set(nvram, argv[i]);
- done++;
- }
- else if( !strcmp(argv[i], "commit") )
- {
- commit = 1;
- done++;
- }
- else
- {
- fprintf(stderr, "Unknown option '%s' !\n", argv[i]);
- done = 0;
- break;
- }
- }
-
- if( write )
- stat = nvram_commit(nvram);
-
- nvram_close(nvram);
-
- if( commit )
- stat = staging_to_nvram();
- }
-
- if( !nvram )
- {
- fprintf(stderr,
- "Could not open nvram! Possible reasons are:\n"
- " - No device found (/proc not mounted or no nvram present)\n"
- " - Insufficient permissions to open mtd device\n"
- " - Insufficient memory to complete operation\n"
- " - Memory mapping failed or not supported\n"
- );
-
- stat = 1;
- }
- else if( !done )
- {
- fprintf(stderr,
- "Usage:\n"
- " nvram show\n"
- " nvram info\n"
- " nvram get variable\n"
- " nvram set variable=value [set ...]\n"
- " nvram unset variable [unset ...]\n"
- " nvram commit\n"
- );
-
- stat = 1;
- }
-
- return stat;
-}
+++ /dev/null
-#include "nvram.h"
-
-/*******************************************************************************
- * crc8
- *
- * Computes a crc8 over the input data using the polynomial:
- *
- * x^8 + x^7 +x^6 + x^4 + x^2 + 1
- *
- * The caller provides the initial value (either CRC8_INIT_VALUE
- * or the previous returned value) to allow for processing of
- * discontiguous blocks of data. When generating the CRC the
- * caller is responsible for complementing the final return value
- * and inserting it into the byte stream. When checking, a final
- * return value of CRC8_GOOD_VALUE indicates a valid CRC.
- *
- * Reference: Dallas Semiconductor Application Note 27
- * Williams, Ross N., "A Painless Guide to CRC Error Detection Algorithms",
- * ver 3, Aug 1993, ross@guest.adelaide.edu.au, Rocksoft Pty Ltd.,
- * ftp://ftp.rocksoft.com/clients/rocksoft/papers/crc_v3.txt
- *
- * ****************************************************************************
- */
-
-static const uint8_t crc8_table[256] = {
- 0x00, 0xF7, 0xB9, 0x4E, 0x25, 0xD2, 0x9C, 0x6B,
- 0x4A, 0xBD, 0xF3, 0x04, 0x6F, 0x98, 0xD6, 0x21,
- 0x94, 0x63, 0x2D, 0xDA, 0xB1, 0x46, 0x08, 0xFF,
- 0xDE, 0x29, 0x67, 0x90, 0xFB, 0x0C, 0x42, 0xB5,
- 0x7F, 0x88, 0xC6, 0x31, 0x5A, 0xAD, 0xE3, 0x14,
- 0x35, 0xC2, 0x8C, 0x7B, 0x10, 0xE7, 0xA9, 0x5E,
- 0xEB, 0x1C, 0x52, 0xA5, 0xCE, 0x39, 0x77, 0x80,
- 0xA1, 0x56, 0x18, 0xEF, 0x84, 0x73, 0x3D, 0xCA,
- 0xFE, 0x09, 0x47, 0xB0, 0xDB, 0x2C, 0x62, 0x95,
- 0xB4, 0x43, 0x0D, 0xFA, 0x91, 0x66, 0x28, 0xDF,
- 0x6A, 0x9D, 0xD3, 0x24, 0x4F, 0xB8, 0xF6, 0x01,
- 0x20, 0xD7, 0x99, 0x6E, 0x05, 0xF2, 0xBC, 0x4B,
- 0x81, 0x76, 0x38, 0xCF, 0xA4, 0x53, 0x1D, 0xEA,
- 0xCB, 0x3C, 0x72, 0x85, 0xEE, 0x19, 0x57, 0xA0,
- 0x15, 0xE2, 0xAC, 0x5B, 0x30, 0xC7, 0x89, 0x7E,
- 0x5F, 0xA8, 0xE6, 0x11, 0x7A, 0x8D, 0xC3, 0x34,
- 0xAB, 0x5C, 0x12, 0xE5, 0x8E, 0x79, 0x37, 0xC0,
- 0xE1, 0x16, 0x58, 0xAF, 0xC4, 0x33, 0x7D, 0x8A,
- 0x3F, 0xC8, 0x86, 0x71, 0x1A, 0xED, 0xA3, 0x54,
- 0x75, 0x82, 0xCC, 0x3B, 0x50, 0xA7, 0xE9, 0x1E,
- 0xD4, 0x23, 0x6D, 0x9A, 0xF1, 0x06, 0x48, 0xBF,
- 0x9E, 0x69, 0x27, 0xD0, 0xBB, 0x4C, 0x02, 0xF5,
- 0x40, 0xB7, 0xF9, 0x0E, 0x65, 0x92, 0xDC, 0x2B,
- 0x0A, 0xFD, 0xB3, 0x44, 0x2F, 0xD8, 0x96, 0x61,
- 0x55, 0xA2, 0xEC, 0x1B, 0x70, 0x87, 0xC9, 0x3E,
- 0x1F, 0xE8, 0xA6, 0x51, 0x3A, 0xCD, 0x83, 0x74,
- 0xC1, 0x36, 0x78, 0x8F, 0xE4, 0x13, 0x5D, 0xAA,
- 0x8B, 0x7C, 0x32, 0xC5, 0xAE, 0x59, 0x17, 0xE0,
- 0x2A, 0xDD, 0x93, 0x64, 0x0F, 0xF8, 0xB6, 0x41,
- 0x60, 0x97, 0xD9, 0x2E, 0x45, 0xB2, 0xFC, 0x0B,
- 0xBE, 0x49, 0x07, 0xF0, 0x9B, 0x6C, 0x22, 0xD5,
- 0xF4, 0x03, 0x4D, 0xBA, 0xD1, 0x26, 0x68, 0x9F
-};
-
-uint8_t hndcrc8 (
- uint8_t * pdata, /* pointer to array of data to process */
- uint32_t nbytes, /* number of input data bytes to process */
- uint8_t crc /* either CRC8_INIT_VALUE or previous return value */
-) {
- while (nbytes-- > 0)
- crc = crc8_table[(crc ^ *pdata++) & 0xff];
-
- return crc;
-}
+++ /dev/null
-/*
- * NVRAM variable manipulation (common)
- *
- * Copyright 2004, Broadcom Corporation
- * Copyright 2009, OpenWrt.org
- * All Rights Reserved.
- *
- * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
- * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
- * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
- *
- */
-
-#include "nvram.h"
-
-#define TRACE(msg) \
- printf("%s(%i) in %s(): %s\n", \
- __FILE__, __LINE__, __FUNCTION__, msg ? msg : "?")
-
-size_t nvram_erase_size = 0;
-
-
-/*
- * -- Helper functions --
- */
-
-/* String hash */
-static uint32_t hash(const char *s)
-{
- uint32_t hash = 0;
-
- while (*s)
- hash = 31 * hash + *s++;
-
- return hash;
-}
-
-/* Free all tuples. */
-static void _nvram_free(nvram_handle_t *h)
-{
- uint32_t i;
- nvram_tuple_t *t, *next;
-
- /* Free hash table */
- for (i = 0; i < NVRAM_ARRAYSIZE(h->nvram_hash); i++) {
- for (t = h->nvram_hash[i]; t; t = next) {
- next = t->next;
- free(t);
- }
- h->nvram_hash[i] = NULL;
- }
-
- /* Free dead table */
- for (t = h->nvram_dead; t; t = next) {
- next = t->next;
- free(t);
- }
-
- h->nvram_dead = NULL;
-}
-
-/* (Re)allocate NVRAM tuples. */
-static nvram_tuple_t * _nvram_realloc( nvram_handle_t *h, nvram_tuple_t *t,
- const char *name, const char *value )
-{
- if ((strlen(value) + 1) > NVRAM_SPACE)
- return NULL;
-
- if (!t) {
- if (!(t = malloc(sizeof(nvram_tuple_t) + strlen(name) + 1)))
- return NULL;
-
- /* Copy name */
- t->name = (char *) &t[1];
- strcpy(t->name, name);
-
- t->value = NULL;
- }
-
- /* Copy value */
- if (!t->value || strcmp(t->value, value))
- {
- if(!(t->value = (char *) realloc(t->value, strlen(value)+1)))
- return NULL;
-
- strcpy(t->value, value);
- t->value[strlen(value)] = '\0';
- }
-
- return t;
-}
-
-/* (Re)initialize the hash table. */
-static int _nvram_rehash(nvram_handle_t *h)
-{
- nvram_header_t *header = nvram_header(h);
- char buf[] = "0xXXXXXXXX", *name, *value, *eq;
-
- /* (Re)initialize hash table */
- _nvram_free(h);
-
- /* Parse and set "name=value\0 ... \0\0" */
- name = (char *) &header[1];
-
- for (; *name; name = value + strlen(value) + 1) {
- if (!(eq = strchr(name, '=')))
- break;
- *eq = '\0';
- value = eq + 1;
- nvram_set(h, name, value);
- *eq = '=';
- }
-
- /* Set special SDRAM parameters */
- if (!nvram_get(h, "sdram_init")) {
- sprintf(buf, "0x%04X", (uint16_t)(header->crc_ver_init >> 16));
- nvram_set(h, "sdram_init", buf);
- }
- if (!nvram_get(h, "sdram_config")) {
- sprintf(buf, "0x%04X", (uint16_t)(header->config_refresh & 0xffff));
- nvram_set(h, "sdram_config", buf);
- }
- if (!nvram_get(h, "sdram_refresh")) {
- sprintf(buf, "0x%04X",
- (uint16_t)((header->config_refresh >> 16) & 0xffff));
- nvram_set(h, "sdram_refresh", buf);
- }
- if (!nvram_get(h, "sdram_ncdl")) {
- sprintf(buf, "0x%08X", header->config_ncdl);
- nvram_set(h, "sdram_ncdl", buf);
- }
-
- return 0;
-}
-
-
-/*
- * -- Public functions --
- */
-
-/* Get nvram header. */
-nvram_header_t * nvram_header(nvram_handle_t *h)
-{
- return (nvram_header_t *) &h->mmap[NVRAM_START(nvram_erase_size)];
-}
-
-/* Get the value of an NVRAM variable. */
-char * nvram_get(nvram_handle_t *h, const char *name)
-{
- uint32_t i;
- nvram_tuple_t *t;
- char *value;
-
- if (!name)
- return NULL;
-
- /* Hash the name */
- i = hash(name) % NVRAM_ARRAYSIZE(h->nvram_hash);
-
- /* Find the associated tuple in the hash table */
- for (t = h->nvram_hash[i]; t && strcmp(t->name, name); t = t->next);
-
- value = t ? t->value : NULL;
-
- return value;
-}
-
-/* Set the value of an NVRAM variable. */
-int nvram_set(nvram_handle_t *h, const char *name, const char *value)
-{
- uint32_t i;
- nvram_tuple_t *t, *u, **prev;
-
- /* Hash the name */
- i = hash(name) % NVRAM_ARRAYSIZE(h->nvram_hash);
-
- /* Find the associated tuple in the hash table */
- for (prev = &h->nvram_hash[i], t = *prev;
- t && strcmp(t->name, name); prev = &t->next, t = *prev);
-
- /* (Re)allocate tuple */
- if (!(u = _nvram_realloc(h, t, name, value)))
- return -12; /* -ENOMEM */
-
- /* Value reallocated */
- if (t && t == u)
- return 0;
-
- /* Move old tuple to the dead table */
- if (t) {
- *prev = t->next;
- t->next = h->nvram_dead;
- h->nvram_dead = t;
- }
-
- /* Add new tuple to the hash table */
- u->next = h->nvram_hash[i];
- h->nvram_hash[i] = u;
-
- return 0;
-}
-
-/* Unset the value of an NVRAM variable. */
-int nvram_unset(nvram_handle_t *h, const char *name)
-{
- uint32_t i;
- nvram_tuple_t *t, **prev;
-
- if (!name)
- return 0;
-
- /* Hash the name */
- i = hash(name) % NVRAM_ARRAYSIZE(h->nvram_hash);
-
- /* Find the associated tuple in the hash table */
- for (prev = &h->nvram_hash[i], t = *prev;
- t && strcmp(t->name, name); prev = &t->next, t = *prev);
-
- /* Move it to the dead table */
- if (t) {
- *prev = t->next;
- t->next = h->nvram_dead;
- h->nvram_dead = t;
- }
-
- return 0;
-}
-
-/* Get all NVRAM variables. */
-nvram_tuple_t * nvram_getall(nvram_handle_t *h)
-{
- int i;
- nvram_tuple_t *t, *l, *x;
-
- l = NULL;
-
- for (i = 0; i < NVRAM_ARRAYSIZE(h->nvram_hash); i++) {
- for (t = h->nvram_hash[i]; t; t = t->next) {
- if( (x = (nvram_tuple_t *) malloc(sizeof(nvram_tuple_t))) != NULL )
- {
- x->name = t->name;
- x->value = t->value;
- x->next = l;
- l = x;
- }
- else
- {
- break;
- }
- }
- }
-
- return l;
-}
-
-/* Regenerate NVRAM. */
-int nvram_commit(nvram_handle_t *h)
-{
- nvram_header_t *header = nvram_header(h);
- char *init, *config, *refresh, *ncdl;
- char *ptr, *end;
- int i;
- nvram_tuple_t *t;
- nvram_header_t tmp;
- uint8_t crc;
-
- /* Regenerate header */
- header->magic = NVRAM_MAGIC;
- header->crc_ver_init = (NVRAM_VERSION << 8);
- if (!(init = nvram_get(h, "sdram_init")) ||
- !(config = nvram_get(h, "sdram_config")) ||
- !(refresh = nvram_get(h, "sdram_refresh")) ||
- !(ncdl = nvram_get(h, "sdram_ncdl"))) {
- header->crc_ver_init |= SDRAM_INIT << 16;
- header->config_refresh = SDRAM_CONFIG;
- header->config_refresh |= SDRAM_REFRESH << 16;
- header->config_ncdl = 0;
- } else {
- header->crc_ver_init |= (strtoul(init, NULL, 0) & 0xffff) << 16;
- header->config_refresh = strtoul(config, NULL, 0) & 0xffff;
- header->config_refresh |= (strtoul(refresh, NULL, 0) & 0xffff) << 16;
- header->config_ncdl = strtoul(ncdl, NULL, 0);
- }
-
- /* Clear data area */
- ptr = (char *) header + sizeof(nvram_header_t);
- memset(ptr, 0xFF, NVRAM_SPACE - sizeof(nvram_header_t));
- memset(&tmp, 0, sizeof(nvram_header_t));
-
- /* Leave space for a double NUL at the end */
- end = (char *) header + NVRAM_SPACE - 2;
-
- /* Write out all tuples */
- for (i = 0; i < NVRAM_ARRAYSIZE(h->nvram_hash); i++) {
- for (t = h->nvram_hash[i]; t; t = t->next) {
- if ((ptr + strlen(t->name) + 1 + strlen(t->value) + 1) > end)
- break;
- ptr += sprintf(ptr, "%s=%s", t->name, t->value) + 1;
- }
- }
-
- /* End with a double NULL and pad to 4 bytes */
- *ptr = '\0';
- ptr++;
-
- if( (int)ptr % 4 )
- memset(ptr, 0, 4 - ((int)ptr % 4));
-
- ptr++;
-
- /* Set new length */
- header->len = NVRAM_ROUNDUP(ptr - (char *) header, 4);
-
- /* Little-endian CRC8 over the last 11 bytes of the header */
- tmp.crc_ver_init = header->crc_ver_init;
- tmp.config_refresh = header->config_refresh;
- tmp.config_ncdl = header->config_ncdl;
- crc = hndcrc8((unsigned char *) &tmp + NVRAM_CRC_START_POSITION,
- sizeof(nvram_header_t) - NVRAM_CRC_START_POSITION, 0xff);
-
- /* Continue CRC8 over data bytes */
- crc = hndcrc8((unsigned char *) &header[0] + sizeof(nvram_header_t),
- header->len - sizeof(nvram_header_t), crc);
-
- /* Set new CRC8 */
- header->crc_ver_init |= crc;
-
- /* Write out */
- msync(h->mmap, h->length, MS_SYNC);
- fsync(h->fd);
-
- /* Reinitialize hash table */
- return _nvram_rehash(h);
-}
-
-/* Open NVRAM and obtain a handle. */
-nvram_handle_t * nvram_open(const char *file, int rdonly)
-{
- int fd;
- char *mtd = NULL;
- nvram_handle_t *h;
- nvram_header_t *header;
-
- /* If erase size or file are undefined then try to define them */
- if( (nvram_erase_size == 0) || (file == NULL) )
- {
- /* Finding the mtd will set the appropriate erase size */
- if( (mtd = nvram_find_mtd()) == NULL || nvram_erase_size == 0 )
- {
- free(mtd);
- return NULL;
- }
- }
-
- if( (fd = open(file ? file : mtd, O_RDWR)) > -1 )
- {
- char *mmap_area = (char *) mmap(
- NULL, nvram_erase_size, PROT_READ | PROT_WRITE,
- ( rdonly == NVRAM_RO ) ? MAP_PRIVATE : MAP_SHARED, fd, 0);
-
- if( mmap_area != MAP_FAILED )
- {
- memset(mmap_area, 0xFF, NVRAM_START(nvram_erase_size));
-
- if((h = (nvram_handle_t *) malloc(sizeof(nvram_handle_t))) != NULL)
- {
- memset(h, 0, sizeof(nvram_handle_t));
-
- h->fd = fd;
- h->mmap = mmap_area;
- h->length = nvram_erase_size;
-
- header = nvram_header(h);
-
- if( header->magic == NVRAM_MAGIC )
- {
- _nvram_rehash(h);
- free(mtd);
- return h;
- }
- else
- {
- munmap(h->mmap, h->length);
- free(h);
- }
- }
- }
- }
-
- free(mtd);
- return NULL;
-}
-
-/* Close NVRAM and free memory. */
-int nvram_close(nvram_handle_t *h)
-{
- _nvram_free(h);
- munmap(h->mmap, h->length);
- close(h->fd);
- free(h);
-
- return 0;
-}
-
-/* Determine NVRAM device node. */
-char * nvram_find_mtd(void)
-{
- FILE *fp;
- int i, esz;
- char dev[PATH_MAX];
- char *path = NULL;
- struct stat s;
-
- if( (fp = fopen("/proc/mtd", "r")) )
- {
- while( fgets(dev, sizeof(dev), fp) )
- {
- if( strstr(dev, "nvram") && sscanf(dev, "mtd%d: %08x", &i, &esz) )
- {
- nvram_erase_size = esz;
-
- sprintf(dev, "/dev/mtdblock/%d", i);
- if( stat(dev, &s) > -1 && (s.st_mode & S_IFBLK) )
- {
- if( (path = (char *) malloc(strlen(dev)+1)) != NULL )
- {
- strncpy(path, dev, strlen(dev)+1);
- break;
- }
- }
- else
- {
- sprintf(dev, "/dev/mtdblock%d", i);
- if( stat(dev, &s) > -1 && (s.st_mode & S_IFBLK) )
- {
- if( (path = (char *) malloc(strlen(dev)+1)) != NULL )
- {
- strncpy(path, dev, strlen(dev)+1);
- break;
- }
- }
- }
- }
- }
- fclose(fp);
- }
-
- return path;
-}
-
-/* Check NVRAM staging file. */
-char * nvram_find_staging(void)
-{
- struct stat s;
-
- if( (stat(NVRAM_STAGING, &s) > -1) && (s.st_mode & S_IFREG) )
- {
- return NVRAM_STAGING;
- }
-
- return NULL;
-}
-
-/* Copy NVRAM contents to staging file. */
-int nvram_to_staging(void)
-{
- int fdmtd, fdstg, stat;
- char *mtd = nvram_find_mtd();
- char buf[nvram_erase_size];
-
- stat = -1;
-
- if( (mtd != NULL) && (nvram_erase_size > 0) )
- {
- if( (fdmtd = open(mtd, O_RDONLY)) > -1 )
- {
- if( read(fdmtd, buf, sizeof(buf)) == sizeof(buf) )
- {
- if((fdstg = open(NVRAM_STAGING, O_WRONLY | O_CREAT, 0600)) > -1)
- {
- write(fdstg, buf, sizeof(buf));
- fsync(fdstg);
- close(fdstg);
-
- stat = 0;
- }
- }
-
- close(fdmtd);
- }
- }
-
- free(mtd);
- return stat;
-}
-
-/* Copy staging file to NVRAM device. */
-int staging_to_nvram(void)
-{
- int fdmtd, fdstg, stat;
- char *mtd = nvram_find_mtd();
- char buf[nvram_erase_size];
-
- stat = -1;
-
- if( (mtd != NULL) && (nvram_erase_size > 0) )
- {
- if( (fdstg = open(NVRAM_STAGING, O_RDONLY)) > -1 )
- {
- if( read(fdstg, buf, sizeof(buf)) == sizeof(buf) )
- {
- if( (fdmtd = open(mtd, O_WRONLY | O_SYNC)) > -1 )
- {
- write(fdmtd, buf, sizeof(buf));
- fsync(fdmtd);
- close(fdmtd);
- stat = 0;
- }
- }
-
- close(fdstg);
-
- if( !stat )
- stat = unlink(NVRAM_STAGING) ? 1 : 0;
- }
- }
-
- free(mtd);
- return stat;
-}
+++ /dev/null
-/*
- * NVRAM variable manipulation
- *
- * Copyright 2007, Broadcom Corporation
- * Copyright 2009, OpenWrt.org
- * All Rights Reserved.
- *
- * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
- * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
- * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
- *
- */
-
-#ifndef _nvram_h_
-#define _nvram_h_
-
-#include <stdint.h>
-#include <string.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <errno.h>
-#include <sys/mman.h>
-#include <sys/stat.h>
-#include <linux/limits.h>
-
-#include "sdinitvals.h"
-
-
-struct nvram_header {
- uint32_t magic;
- uint32_t len;
- uint32_t crc_ver_init; /* 0:7 crc, 8:15 ver, 16:31 sdram_init */
- uint32_t config_refresh; /* 0:15 sdram_config, 16:31 sdram_refresh */
- uint32_t config_ncdl; /* ncdl values for memc */
-} __attribute__((__packed__));
-
-struct nvram_tuple {
- char *name;
- char *value;
- struct nvram_tuple *next;
-};
-
-struct nvram_handle {
- int fd;
- char *mmap;
- unsigned long length;
- struct nvram_tuple *nvram_hash[257];
- struct nvram_tuple *nvram_dead;
-};
-
-typedef struct nvram_handle nvram_handle_t;
-typedef struct nvram_header nvram_header_t;
-typedef struct nvram_tuple nvram_tuple_t;
-
-
-/* Get nvram header. */
-nvram_header_t * nvram_header(nvram_handle_t *h);
-
-/* Set the value of an NVRAM variable */
-int nvram_set(nvram_handle_t *h, const char *name, const char *value);
-
-/* Get the value of an NVRAM variable. */
-char * nvram_get(nvram_handle_t *h, const char *name);
-
-/* Unset the value of an NVRAM variable. */
-int nvram_unset(nvram_handle_t *h, const char *name);
-
-/* Get all NVRAM variables. */
-nvram_tuple_t * nvram_getall(nvram_handle_t *h);
-
-/* Regenerate NVRAM. */
-int nvram_commit(nvram_handle_t *h);
-
-/* Open NVRAM and obtain a handle. */
-nvram_handle_t * nvram_open(const char *file, int rdonly);
-
-/* Close NVRAM and free memory. */
-int nvram_close(nvram_handle_t *h);
-
-/* Get the value of an NVRAM variable in a safe way, use "" instead of NULL. */
-#define nvram_safe_get(h, name) (nvram_get(h, name) ? : "")
-
-/* Computes a crc8 over the input data. */
-uint8_t hndcrc8 (uint8_t * pdata, uint32_t nbytes, uint8_t crc);
-
-/* Returns the crc value of the nvram. */
-uint8_t nvram_calc_crc(nvram_header_t * nvh);
-
-/* Determine NVRAM device node. */
-char * nvram_find_mtd(void);
-
-/* Copy NVRAM contents to staging file. */
-int nvram_to_staging(void);
-
-/* Copy staging file to NVRAM device. */
-int staging_to_nvram(void);
-
-/* Check NVRAM staging file. */
-char * nvram_find_staging(void);
-
-
-/* Staging file for NVRAM */
-#define NVRAM_STAGING "/tmp/.nvram"
-#define NVRAM_RO 1
-#define NVRAM_RW 0
-
-/* Helper macros */
-#define NVRAM_ARRAYSIZE(a) sizeof(a)/sizeof(a[0])
-#define NVRAM_ROUNDUP(x, y) ((((x)+((y)-1))/(y))*(y))
-
-/* NVRAM constants */
-#define NVRAM_SPACE 0x8000
-#define NVRAM_START(x) x - NVRAM_SPACE
-#define NVRAM_MAGIC 0x48534C46 /* 'FLSH' */
-#define NVRAM_VERSION 1
-
-#define NVRAM_CRC_START_POSITION 9 /* magic, len, crc8 to be skipped */
-
-
-#endif /* _nvram_h_ */
+++ /dev/null
-/*
- * SDRAM init values
- *
- * Copyright 2007, Broadcom Corporation
- * Copyright 2009, OpenWrt.org
- * All Rights Reserved.
- *
- * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
- * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
- * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
- *
- */
-
-#ifndef _sdinitvals_h_
-#define _sdinitvals_h_
-
-/* SDRAM refresh control (refresh) register bits */
-#define SDRAM_REF(p) (((p)&0xff) | SDRAM_REF_EN) /* Refresh period */
-#define SDRAM_REF_EN 0x8000 /* Writing 1 enables periodic refresh */
-
-/* SDRAM Core default Init values (OCP ID 0x803) */
-#define MEM4MX16X2 0x419 /* 16 MB */
-
-#define SDRAM_INIT MEM4MX16X2
-#define SDRAM_BURSTFULL 0x0000 /* Use full page bursts */
-#define SDRAM_CONFIG SDRAM_BURSTFULL
-#define SDRAM_REFRESH SDRAM_REF(0x40)
-
-#endif /* _sdinitvals_h_ */
projects / openwrt / staging / nbd.git / commitdiff