diff options
Diffstat (limited to 'drivers/isdn/hysdn/hysdn_boot.c')
| -rw-r--r-- | drivers/isdn/hysdn/hysdn_boot.c | 400 |
1 files changed, 0 insertions, 400 deletions
diff --git a/drivers/isdn/hysdn/hysdn_boot.c b/drivers/isdn/hysdn/hysdn_boot.c deleted file mode 100644 index ba177c3a621b..000000000000 --- a/drivers/isdn/hysdn/hysdn_boot.c +++ /dev/null @@ -1,400 +0,0 @@ -/* $Id: hysdn_boot.c,v 1.4.6.4 2001/09/23 22:24:54 kai Exp $ - * - * Linux driver for HYSDN cards - * specific routines for booting and pof handling - * - * Author Werner Cornelius (werner@titro.de) for Hypercope GmbH - * Copyright 1999 by Werner Cornelius (werner@titro.de) - * - * This software may be used and distributed according to the terms - * of the GNU General Public License, incorporated herein by reference. - * - */ - -#include <linux/vmalloc.h> -#include <linux/slab.h> -#include <linux/uaccess.h> - -#include "hysdn_defs.h" -#include "hysdn_pof.h" - -/********************************/ -/* defines for pof read handler */ -/********************************/ -#define POF_READ_FILE_HEAD 0 -#define POF_READ_TAG_HEAD 1 -#define POF_READ_TAG_DATA 2 - -/************************************************************/ -/* definition of boot specific data area. This data is only */ -/* needed during boot and so allocated dynamically. */ -/************************************************************/ -struct boot_data { - unsigned short Cryptor; /* for use with Decrypt function */ - unsigned short Nrecs; /* records remaining in file */ - unsigned char pof_state;/* actual state of read handler */ - unsigned char is_crypted;/* card data is crypted */ - int BufSize; /* actual number of bytes bufferd */ - int last_error; /* last occurred error */ - unsigned short pof_recid;/* actual pof recid */ - unsigned long pof_reclen;/* total length of pof record data */ - unsigned long pof_recoffset;/* actual offset inside pof record */ - union { - unsigned char BootBuf[BOOT_BUF_SIZE];/* buffer as byte count */ - tPofRecHdr PofRecHdr; /* header for actual record/chunk */ - tPofFileHdr PofFileHdr; /* header from POF file */ - tPofTimeStamp PofTime; /* time information */ - } buf; -}; - -/*****************************************************/ -/* start decryption of successive POF file chuncks. */ -/* */ -/* to be called at start of POF file reading, */ -/* before starting any decryption on any POF record. */ -/*****************************************************/ -static void -StartDecryption(struct boot_data *boot) -{ - boot->Cryptor = CRYPT_STARTTERM; -} /* StartDecryption */ - - -/***************************************************************/ -/* decrypt complete BootBuf */ -/* NOTE: decryption must be applied to all or none boot tags - */ -/* to HI and LO boot loader and (all) seq tags, because */ -/* global Cryptor is started for whole POF. */ -/***************************************************************/ -static void -DecryptBuf(struct boot_data *boot, int cnt) -{ - unsigned char *bufp = boot->buf.BootBuf; - - while (cnt--) { - boot->Cryptor = (boot->Cryptor >> 1) ^ ((boot->Cryptor & 1U) ? CRYPT_FEEDTERM : 0); - *bufp++ ^= (unsigned char)boot->Cryptor; - } -} /* DecryptBuf */ - -/********************************************************************************/ -/* pof_handle_data executes the required actions dependent on the active record */ -/* id. If successful 0 is returned, a negative value shows an error. */ -/********************************************************************************/ -static int -pof_handle_data(hysdn_card *card, int datlen) -{ - struct boot_data *boot = card->boot; /* pointer to boot specific data */ - long l; - unsigned char *imgp; - int img_len; - - /* handle the different record types */ - switch (boot->pof_recid) { - - case TAG_TIMESTMP: - if (card->debug_flags & LOG_POF_RECORD) - hysdn_addlog(card, "POF created %s", boot->buf.PofTime.DateTimeText); - break; - - case TAG_CBOOTDTA: - DecryptBuf(boot, datlen); /* we need to encrypt the buffer */ - /* fall through */ - case TAG_BOOTDTA: - if (card->debug_flags & LOG_POF_RECORD) - hysdn_addlog(card, "POF got %s len=%d offs=0x%lx", - (boot->pof_recid == TAG_CBOOTDTA) ? "CBOOTDATA" : "BOOTDTA", - datlen, boot->pof_recoffset); - - if (boot->pof_reclen != POF_BOOT_LOADER_TOTAL_SIZE) { - boot->last_error = EPOF_BAD_IMG_SIZE; /* invalid length */ - return (boot->last_error); - } - imgp = boot->buf.BootBuf; /* start of buffer */ - img_len = datlen; /* maximum length to transfer */ - - l = POF_BOOT_LOADER_OFF_IN_PAGE - - (boot->pof_recoffset & (POF_BOOT_LOADER_PAGE_SIZE - 1)); - if (l > 0) { - /* buffer needs to be truncated */ - imgp += l; /* advance pointer */ - img_len -= l; /* adjust len */ - } - /* at this point no special handling for data wrapping over buffer */ - /* is necessary, because the boot image always will be adjusted to */ - /* match a page boundary inside the buffer. */ - /* The buffer for the boot image on the card is filled in 2 cycles */ - /* first the 1024 hi-words are put in the buffer, then the low 1024 */ - /* word are handled in the same way with different offset. */ - - if (img_len > 0) { - /* data available for copy */ - if ((boot->last_error = - card->writebootimg(card, imgp, - (boot->pof_recoffset > POF_BOOT_LOADER_PAGE_SIZE) ? 2 : 0)) < 0) - return (boot->last_error); - } - break; /* end of case boot image hi/lo */ - - case TAG_CABSDATA: - DecryptBuf(boot, datlen); /* we need to encrypt the buffer */ - /* fall through */ - case TAG_ABSDATA: - if (card->debug_flags & LOG_POF_RECORD) - hysdn_addlog(card, "POF got %s len=%d offs=0x%lx", - (boot->pof_recid == TAG_CABSDATA) ? "CABSDATA" : "ABSDATA", - datlen, boot->pof_recoffset); - - if ((boot->last_error = card->writebootseq(card, boot->buf.BootBuf, datlen)) < 0) - return (boot->last_error); /* error writing data */ - - if (boot->pof_recoffset + datlen >= boot->pof_reclen) - return (card->waitpofready(card)); /* data completely spooled, wait for ready */ - - break; /* end of case boot seq data */ - - default: - if (card->debug_flags & LOG_POF_RECORD) - hysdn_addlog(card, "POF got data(id=0x%lx) len=%d offs=0x%lx", boot->pof_recid, - datlen, boot->pof_recoffset); - - break; /* simply skip record */ - } /* switch boot->pof_recid */ - - return (0); -} /* pof_handle_data */ - - -/******************************************************************************/ -/* pof_write_buffer is called when the buffer has been filled with the needed */ -/* number of data bytes. The number delivered is additionally supplied for */ -/* verification. The functions handles the data and returns the needed number */ -/* of bytes for the next action. If the returned value is 0 or less an error */ -/* occurred and booting must be aborted. */ -/******************************************************************************/ -int -pof_write_buffer(hysdn_card *card, int datlen) -{ - struct boot_data *boot = card->boot; /* pointer to boot specific data */ - - if (!boot) - return (-EFAULT); /* invalid call */ - if (boot->last_error < 0) - return (boot->last_error); /* repeated error */ - - if (card->debug_flags & LOG_POF_WRITE) - hysdn_addlog(card, "POF write: got %d bytes ", datlen); - - switch (boot->pof_state) { - case POF_READ_FILE_HEAD: - if (card->debug_flags & LOG_POF_WRITE) - hysdn_addlog(card, "POF write: checking file header"); - - if (datlen != sizeof(tPofFileHdr)) { - boot->last_error = -EPOF_INTERNAL; - break; - } - if (boot->buf.PofFileHdr.Magic != TAGFILEMAGIC) { - boot->last_error = -EPOF_BAD_MAGIC; - break; - } - /* Setup the new state and vars */ - boot->Nrecs = (unsigned short)(boot->buf.PofFileHdr.N_PofRecs); /* limited to 65535 */ - boot->pof_state = POF_READ_TAG_HEAD; /* now start with single tags */ - boot->last_error = sizeof(tPofRecHdr); /* new length */ - break; - - case POF_READ_TAG_HEAD: - if (card->debug_flags & LOG_POF_WRITE) - hysdn_addlog(card, "POF write: checking tag header"); - - if (datlen != sizeof(tPofRecHdr)) { - boot->last_error = -EPOF_INTERNAL; - break; - } - boot->pof_recid = boot->buf.PofRecHdr.PofRecId; /* actual pof recid */ - boot->pof_reclen = boot->buf.PofRecHdr.PofRecDataLen; /* total length */ - boot->pof_recoffset = 0; /* no starting offset */ - - if (card->debug_flags & LOG_POF_RECORD) - hysdn_addlog(card, "POF: got record id=0x%lx length=%ld ", - boot->pof_recid, boot->pof_reclen); - - boot->pof_state = POF_READ_TAG_DATA; /* now start with tag data */ - if (boot->pof_reclen < BOOT_BUF_SIZE) - boot->last_error = boot->pof_reclen; /* limit size */ - else - boot->last_error = BOOT_BUF_SIZE; /* maximum */ - - if (!boot->last_error) { /* no data inside record */ - boot->pof_state = POF_READ_TAG_HEAD; /* now start with single tags */ - boot->last_error = sizeof(tPofRecHdr); /* new length */ - } - break; - - case POF_READ_TAG_DATA: - if (card->debug_flags & LOG_POF_WRITE) - hysdn_addlog(card, "POF write: getting tag data"); - - if (datlen != boot->last_error) { - boot->last_error = -EPOF_INTERNAL; - break; - } - if ((boot->last_error = pof_handle_data(card, datlen)) < 0) - return (boot->last_error); /* an error occurred */ - boot->pof_recoffset += datlen; - if (boot->pof_recoffset >= boot->pof_reclen) { - boot->pof_state = POF_READ_TAG_HEAD; /* now start with single tags */ - boot->last_error = sizeof(tPofRecHdr); /* new length */ - } else { - if (boot->pof_reclen - boot->pof_recoffset < BOOT_BUF_SIZE) - boot->last_error = boot->pof_reclen - boot->pof_recoffset; /* limit size */ - else - boot->last_error = BOOT_BUF_SIZE; /* maximum */ - } - break; - - default: - boot->last_error = -EPOF_INTERNAL; /* unknown state */ - break; - } /* switch (boot->pof_state) */ - - return (boot->last_error); -} /* pof_write_buffer */ - - -/*******************************************************************************/ -/* pof_write_open is called when an open for boot on the cardlog device occurs. */ -/* The function returns the needed number of bytes for the next operation. If */ -/* the returned number is less or equal 0 an error specified by this code */ -/* occurred. Additionally the pointer to the buffer data area is set on success */ -/*******************************************************************************/ -int -pof_write_open(hysdn_card *card, unsigned char **bufp) -{ - struct boot_data *boot; /* pointer to boot specific data */ - - if (card->boot) { - if (card->debug_flags & LOG_POF_OPEN) - hysdn_addlog(card, "POF open: already opened for boot"); - return (-ERR_ALREADY_BOOT); /* boot already active */ - } - /* error no mem available */ - if (!(boot = kzalloc(sizeof(struct boot_data), GFP_KERNEL))) { - if (card->debug_flags & LOG_MEM_ERR) - hysdn_addlog(card, "POF open: unable to allocate mem"); - return (-EFAULT); - } - card->boot = boot; - card->state = CARD_STATE_BOOTING; - - card->stopcard(card); /* first stop the card */ - if (card->testram(card)) { - if (card->debug_flags & LOG_POF_OPEN) - hysdn_addlog(card, "POF open: DPRAM test failure"); - boot->last_error = -ERR_BOARD_DPRAM; - card->state = CARD_STATE_BOOTERR; /* show boot error */ - return (boot->last_error); - } - boot->BufSize = 0; /* Buffer is empty */ - boot->pof_state = POF_READ_FILE_HEAD; /* read file header */ - StartDecryption(boot); /* if POF File should be encrypted */ - - if (card->debug_flags & LOG_POF_OPEN) - hysdn_addlog(card, "POF open: success"); - - *bufp = boot->buf.BootBuf; /* point to buffer */ - return (sizeof(tPofFileHdr)); -} /* pof_write_open */ - -/********************************************************************************/ -/* pof_write_close is called when an close of boot on the cardlog device occurs. */ -/* The return value must be 0 if everything has happened as desired. */ -/********************************************************************************/ -int -pof_write_close(hysdn_card *card) -{ - struct boot_data *boot = card->boot; /* pointer to boot specific data */ - - if (!boot) - return (-EFAULT); /* invalid call */ - - card->boot = NULL; /* no boot active */ - kfree(boot); - - if (card->state == CARD_STATE_RUN) - card->set_errlog_state(card, 1); /* activate error log */ - - if (card->debug_flags & LOG_POF_OPEN) - hysdn_addlog(card, "POF close: success"); - - return (0); -} /* pof_write_close */ - -/*********************************************************************************/ -/* EvalSysrTokData checks additional records delivered with the Sysready Message */ -/* when POF has been booted. A return value of 0 is used if no error occurred. */ -/*********************************************************************************/ -int -EvalSysrTokData(hysdn_card *card, unsigned char *cp, int len) -{ - u_char *p; - u_char crc; - - if (card->debug_flags & LOG_POF_RECORD) - hysdn_addlog(card, "SysReady Token data length %d", len); - - if (len < 2) { - hysdn_addlog(card, "SysReady Token Data to short"); - return (1); - } - for (p = cp, crc = 0; p < (cp + len - 2); p++) - if ((crc & 0x80)) - crc = (((u_char) (crc << 1)) + 1) + *p; - else - crc = ((u_char) (crc << 1)) + *p; - crc = ~crc; - if (crc != *(cp + len - 1)) { - hysdn_addlog(card, "SysReady Token Data invalid CRC"); - return (1); - } - len--; /* don't check CRC byte */ - while (len > 0) { - - if (*cp == SYSR_TOK_END) - return (0); /* End of Token stream */ - - if (len < (*(cp + 1) + 2)) { - hysdn_addlog(card, "token 0x%x invalid length %d", *cp, *(cp + 1)); - return (1); - } - switch (*cp) { - case SYSR_TOK_B_CHAN: /* 1 */ - if (*(cp + 1) != 1) - return (1); /* length invalid */ - card->bchans = *(cp + 2); - break; - - case SYSR_TOK_FAX_CHAN: /* 2 */ - if (*(cp + 1) != 1) - return (1); /* length invalid */ - card->faxchans = *(cp + 2); - break; - - case SYSR_TOK_MAC_ADDR: /* 3 */ - if (*(cp + 1) != 6) - return (1); /* length invalid */ - memcpy(card->mac_addr, cp + 2, 6); - break; - - default: - hysdn_addlog(card, "unknown token 0x%02x length %d", *cp, *(cp + 1)); - break; - } - len -= (*(cp + 1) + 2); /* adjust len */ - cp += (*(cp + 1) + 2); /* and pointer */ - } - - hysdn_addlog(card, "no end token found"); - return (1); -} /* EvalSysrTokData */ |