diff options
Diffstat (limited to 'target/linux/aruba-2.6/files/arch/mips/aruba/nvram')
3 files changed, 504 insertions, 0 deletions
diff --git a/target/linux/aruba-2.6/files/arch/mips/aruba/nvram/Makefile b/target/linux/aruba-2.6/files/arch/mips/aruba/nvram/Makefile new file mode 100644 index 0000000000..14beb1ca83 --- /dev/null +++ b/target/linux/aruba-2.6/files/arch/mips/aruba/nvram/Makefile @@ -0,0 +1,46 @@ +############################################################################### +# +# BRIEF MODULE DESCRIPTION +# Makefile for IDT EB434 nvram access routines +# +# Copyright 2004 IDT Inc. (rischelp@idt.com) +# +# 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED +# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF +# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN +# NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, +# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +# ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF +# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +# +# 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., +# 675 Mass Ave, Cambridge, MA 02139, USA. +# +# +############################################################################### +# May 2004 rkt, neb +# +# Initial Release +# +# +# +############################################################################### + +obj-y := nvram434.o +obj-m := $(O_TARGET) + + + + + + + diff --git a/target/linux/aruba-2.6/files/arch/mips/aruba/nvram/nvram434.c b/target/linux/aruba-2.6/files/arch/mips/aruba/nvram/nvram434.c new file mode 100644 index 0000000000..5883fcdabb --- /dev/null +++ b/target/linux/aruba-2.6/files/arch/mips/aruba/nvram/nvram434.c @@ -0,0 +1,392 @@ +/************************************************************************** + * + * BRIEF MODULE DESCRIPTION + * nvram interface routines. + * + * Copyright 2004 IDT Inc. (rischelp@idt.com) + * + * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * 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., + * 675 Mass Ave, Cambridge, MA 02139, USA. + * + * + ************************************************************************** + * May 2004 rkt, neb + * + * Initial Release + * + * + * + ************************************************************************** + */ + +#include <linux/ctype.h> +#include <linux/string.h> + +//#include <asm/ds1553rtc.h> +#include "nvram434.h" +#define NVRAM_BASE 0xbfff8000 + +extern void setenv (char *e, char *v, int rewrite); +extern void unsetenv (char *e); +extern void mapenv (int (*func)(char *, char *)); +extern char *getenv (char *s); +extern void purgeenv(void); + +static void nvram_initenv(void); + +static unsigned char +nvram_getbyte(int offs) +{ + return(*((unsigned char*)(NVRAM_BASE + offs))); +} + +static void +nvram_setbyte(int offs, unsigned char val) +{ + unsigned char* nvramDataPointer = (unsigned char*)(NVRAM_BASE + offs); + + *nvramDataPointer = val; +} + +/* + * BigEndian! + */ +static unsigned short +nvram_getshort(int offs) +{ + return((nvram_getbyte(offs) << 8) | nvram_getbyte(offs + 1)); +} + +static void +nvram_setshort(int offs, unsigned short val) +{ + nvram_setbyte(offs, (unsigned char)((val >> 8) & 0xff)); + nvram_setbyte(offs + 1, (unsigned char)(val & 0xff)); +} +#if 0 +static unsigned int +nvram_getint(int offs) +{ + unsigned int val; + val = nvram_getbyte(offs) << 24; + val |= nvram_getbyte(offs + 1) << 16; + val |= nvram_getbyte(offs + 2) << 8; + val |= nvram_getbyte(offs + 3); + return(val); +} + +static void +nvram_setint(int offs, unsigned int val) +{ + nvram_setbyte(offs, val >> 24); + nvram_setbyte(offs + 1, val >> 16); + nvram_setbyte(offs + 2, val >> 8); + nvram_setbyte(offs + 3, val); +} +#endif +/* + * calculate NVRAM checksum + */ +static unsigned short +nvram_calcsum(void) +{ + unsigned short sum = NV_MAGIC; + int i; + + for (i = ENV_BASE; i < ENV_TOP; i += 2) + sum += nvram_getshort(i); + return(sum); +} + +/* + * update the nvram checksum + */ +static void +nvram_updatesum (void) +{ + nvram_setshort(NVOFF_CSUM, nvram_calcsum()); +} + +/* + * test validity of nvram by checksumming it + */ +static int +nvram_isvalid(void) +{ + static int is_valid; + + if (is_valid) + return(1); + + if (nvram_getshort(NVOFF_MAGIC) != NV_MAGIC) { + printk("nvram_isvalid FAILED\n"); + //nvram_initenv(); + } + is_valid = 1; + return(1); +} + +/* return nvram address of environment string */ +static int +nvram_matchenv(char *s) +{ + int envsize, envp, n, i, varsize; + char *var; + + envsize = nvram_getshort(NVOFF_ENVSIZE); + + if (envsize > ENV_AVAIL) + return(0); /* sanity */ + + envp = ENV_BASE; + + if ((n = strlen (s)) > 255) + return(0); + + while (envsize > 0) { + varsize = nvram_getbyte(envp); + if (varsize == 0 || (envp + varsize) > ENV_TOP) + return(0); /* sanity */ + for (i = envp + 1, var = s; i <= envp + n; i++, var++) { + char c1 = nvram_getbyte(i); + char c2 = *var; + if (islower(c1)) + c1 = toupper(c1); + if (islower(c2)) + c2 = toupper(c2); + if (c1 != c2) + break; + } + if (i > envp + n) { /* match so far */ + if (n == varsize - 1) /* match on boolean */ + return(envp); + if (nvram_getbyte(i) == '=') /* exact match on variable */ + return(envp); + } + envsize -= varsize; + envp += varsize; + } + return(0); +} + +static void nvram_initenv(void) +{ + nvram_setshort(NVOFF_MAGIC, NV_MAGIC); + nvram_setshort(NVOFF_ENVSIZE, 0); + + nvram_updatesum(); +} + +static void +nvram_delenv(char *s) +{ + int nenvp, envp, envsize, nbytes; + + envp = nvram_matchenv(s); + if (envp == 0) + return; + + nenvp = envp + nvram_getbyte(envp); + envsize = nvram_getshort(NVOFF_ENVSIZE); + nbytes = envsize - (nenvp - ENV_BASE); + nvram_setshort(NVOFF_ENVSIZE, envsize - (nenvp - envp)); + while (nbytes--) { + nvram_setbyte(envp, nvram_getbyte(nenvp)); + envp++; + nenvp++; + } + nvram_updatesum(); +} + +static int +nvram_setenv(char *s, char *v) +{ + int ns, nv, total; + int envp; + + if (!nvram_isvalid()) + return(-1); + + nvram_delenv(s); + ns = strlen(s); + if (ns == 0) + return (-1); + if (v && *v) { + nv = strlen(v); + total = ns + nv + 2; + } + else { + nv = 0; + total = ns + 1; + } + if (total > 255 || total > ENV_AVAIL - nvram_getshort(NVOFF_ENVSIZE)) + return(-1); + + envp = ENV_BASE + nvram_getshort(NVOFF_ENVSIZE); + + nvram_setbyte(envp, (unsigned char) total); + envp++; + + while (ns--) { + nvram_setbyte(envp, *s); + envp++; + s++; + } + + if (nv) { + nvram_setbyte(envp, '='); + envp++; + while (nv--) { + nvram_setbyte(envp, *v); + envp++; + v++; + } + } + nvram_setshort(NVOFF_ENVSIZE, envp-ENV_BASE); + nvram_updatesum(); + return 0; +} + +static char * +nvram_getenv(char *s) +{ + static char buf[256]; /* FIXME: this cannot be static */ + int envp, ns, nbytes, i; + + if (!nvram_isvalid()) + return "INVALID NVRAM"; //((char *)0); + + envp = nvram_matchenv(s); + if (envp == 0) + return "NOT FOUND"; //((char *)0); + ns = strlen(s); + if (nvram_getbyte(envp) == ns + 1) /* boolean */ + buf[0] = '\0'; + else { + nbytes = nvram_getbyte(envp) - (ns + 2); + envp += ns + 2; + for (i = 0; i < nbytes; i++) + buf[i] = nvram_getbyte(envp++); + buf[i] = '\0'; + } + return(buf); +} + +static void +nvram_unsetenv(char *s) +{ + if (!nvram_isvalid()) + return; + + nvram_delenv(s); +} + +/* + * apply func to each string in environment + */ +static void +nvram_mapenv(int (*func)(char *, char *)) +{ + int envsize, envp, n, i, seeneql; + char name[256], value[256]; + char c, *s; + + if (!nvram_isvalid()) + return; + + envsize = nvram_getshort(NVOFF_ENVSIZE); + envp = ENV_BASE; + + while (envsize > 0) { + value[0] = '\0'; + seeneql = 0; + s = name; + n = nvram_getbyte(envp); + for (i = envp + 1; i < envp + n; i++) { + c = nvram_getbyte(i); + if ((c == '=') && !seeneql) { + *s = '\0'; + s = value; + seeneql = 1; + continue; + } + *s++ = c; + } + *s = '\0'; + (*func)(name, value); + envsize -= n; + envp += n; + } +} +#if 0 +static unsigned int +digit(char c) +{ + if ('0' <= c && c <= '9') + return (c - '0'); + if ('A' <= c && c <= 'Z') + return (10 + c - 'A'); + if ('a' <= c && c <= 'z') + return (10 + c - 'a'); + return (~0); +} +#endif +/* + * Wrappers to allow 'special' environment variables to get processed + */ +void +setenv(char *e, char *v, int rewrite) +{ + if (nvram_getenv(e) && !rewrite) + return; + + nvram_setenv(e, v); +} + +char * +getenv(char *e) +{ + return(nvram_getenv(e)); +} + +void +unsetenv(char *e) +{ + nvram_unsetenv(e); +} + +void +purgeenv() +{ + int i; + unsigned char* nvramDataPointer = (unsigned char*)(NVRAM_BASE); + + for (i = ENV_BASE; i < ENV_TOP; i++) + *nvramDataPointer++ = 0; + nvram_setshort(NVOFF_MAGIC, NV_MAGIC); + nvram_setshort(NVOFF_ENVSIZE, 0); + nvram_setshort(NVOFF_CSUM, NV_MAGIC); +} + +void +mapenv(int (*func)(char *, char *)) +{ + nvram_mapenv(func); +} diff --git a/target/linux/aruba-2.6/files/arch/mips/aruba/nvram/nvram434.h b/target/linux/aruba-2.6/files/arch/mips/aruba/nvram/nvram434.h new file mode 100644 index 0000000000..77b1ef986b --- /dev/null +++ b/target/linux/aruba-2.6/files/arch/mips/aruba/nvram/nvram434.h @@ -0,0 +1,66 @@ +/************************************************************************** + * + * BRIEF MODULE DESCRIPTION + * nvram definitions. + * + * Copyright 2004 IDT Inc. (rischelp@idt.com) + * + * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * 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., + * 675 Mass Ave, Cambridge, MA 02139, USA. + * + * + ************************************************************************** + * May 2004 rkt, neb + * + * Initial Release + * + * + * + ************************************************************************** + */ + + +#ifndef _NVRAM_ +#define _NVRAM_ +#define NVOFFSET 0 /* use all of NVRAM */ + +/* Offsets to reserved locations */ + /* size description */ +#define NVOFF_MAGIC (NVOFFSET + 0) /* 2 magic value */ +#define NVOFF_CSUM (NVOFFSET + 2) /* 2 NVRAM environment checksum */ +#define NVOFF_ENVSIZE (NVOFFSET + 4) /* 2 size of 'environment' */ +#define NVOFF_TEST (NVOFFSET + 5) /* 1 cold start test byte */ +#define NVOFF_ETHADDR (NVOFFSET + 6) /* 6 decoded ethernet address */ +#define NVOFF_UNUSED (NVOFFSET + 12) /* 0 current end of table */ + +#define NV_MAGIC 0xdeaf /* nvram magic number */ +#define NV_RESERVED 6 /* number of reserved bytes */ + +#undef NVOFF_ETHADDR +#define NVOFF_ETHADDR (NVOFFSET + NV_RESERVED - 6) + +/* number of bytes available for environment */ +#define ENV_BASE (NVOFFSET + NV_RESERVED) +#define ENV_TOP 0x2000 +#define ENV_AVAIL (ENV_TOP - ENV_BASE) + +#endif /* _NVRAM_ */ + + |