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Diffstat (limited to 'package')
8 files changed, 0 insertions, 873 deletions
diff --git a/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/README.mjn3 b/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/README.mjn3 deleted file mode 100644 index 0e93e55f9..000000000 --- a/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/README.mjn3 +++ /dev/null @@ -1,20 +0,0 @@ - -FIRST... See the dedication in the decompress_bunzip2.c file as it applies -here too. Donations to hospice in Toni's memory would be appreciated. - -As far as the code goes... the bzImage is just a bzip'd kernel image with -a small gzip'd decompressor/loader stuck on front. CFE ungzip's the loader -app which then relocates the bunzip decompressor into higher memory and -bunzip's the compressed kernel directly from flash. Then the instruction -cache is flushed (to remove traces of the loader) and the kernel is executed. - -Of course, a better approach would be to add bunzip decompression to CFE. - -Notes... - 1) Instruction cache size and linesize are hardcoded (see the #warning). - 2) Currently assumes at least 16M or ram. - 3) Thanks to Mike Baker mbm at alt dot org for bouncing ideas back - and forth as well as diagnosing the last (icache) bug. - -Manuel Novoa III <mjn3@codepoet.org> May 30, 2004 - diff --git a/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/data.lds b/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/data.lds deleted file mode 100644 index ec48b2dfd..000000000 --- a/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/data.lds +++ /dev/null @@ -1 +0,0 @@ -SECTIONS { .data : { code_start = .; *(.data) code_stop = .; }} diff --git a/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/decompress_bunzip2.c b/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/decompress_bunzip2.c deleted file mode 100644 index 9a120796f..000000000 --- a/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/decompress_bunzip2.c +++ /dev/null @@ -1,758 +0,0 @@ -/* vi: set sw=4 ts=4: */ -/* Small bzip2 deflate implementation, by Rob Landley (rob@landley.net). - - Based on bzip2 decompression code by Julian R Seward (jseward@acm.org), - which also acknowledges contributions by Mike Burrows, David Wheeler, - Peter Fenwick, Alistair Moffat, Radford Neal, Ian H. Witten, - Robert Sedgewick, and Jon L. Bentley. - - This code is licensed under the LGPLv2: - LGPL (http://www.gnu.org/copyleft/lgpl.html -*/ - -/* - Size and speed optimizations by Manuel Novoa III (mjn3@codepoet.org). - - More efficient reading of huffman codes, a streamlined read_bunzip() - function, and various other tweaks. In (limited) tests, approximately - 20% faster than bzcat on x86 and about 10% faster on arm. - - Note that about 2/3 of the time is spent in read_unzip() reversing - the Burrows-Wheeler transformation. Much of that time is delay - resulting from cache misses. - - I would ask that anyone benefiting from this work, especially those - using it in commercial products, consider making a donation to my local - non-profit hospice organization in the name of the woman I loved, who - passed away Feb. 12, 2003. - - In memory of Toni W. Hagan - - Hospice of Acadiana, Inc. - 2600 Johnston St., Suite 200 - Lafayette, LA 70503-3240 - - Phone (337) 232-1234 or 1-800-738-2226 - Fax (337) 232-1297 - - http://www.hospiceacadiana.com/ - - Manuel - */ - -/* May 21, 2004 Manuel Novoa III - * Modified to load a bzip'd kernel on the linksys wrt54g. - * - * May 30, 2004 - * Further size reduction via inlining and disabling len check code. - */ - -/**********************************************************************/ - -/* Note... the LED code is specific to the v2.0 (and GS?) unit. */ -#undef ENABLE_LEDS -/* #define ENABLE_LEDS 1 */ - -/* Do we want to bother with checking the bzip'd data for errors? */ -#undef ENABLE_BUNZIP_CHECKING -/* #define ENABLE_BUNZIP_CHECKING 1 */ - -/**********************************************************************/ -/* #include <bcm4710.h> */ -#define BCM4710_FLASH 0x1fc00000 /* Flash */ - -#define KSEG0 0x80000000 -#define KSEG1 0xa0000000 - -#define KSEG1ADDR(a) ((((unsigned)(a)) & 0x1fffffffU) | KSEG1) - -/* The following cache code was taken from the file bcm4710_cache.h - * which was necessarily GPL as it was used to build the linksys - * kernel for the wrt54g. */ - -#warning icache [l]size hardcoded - -#define icache_size 8192 -#define ic_lsize 16 - -#define Index_Invalidate_I 0x00 - -#define cache_unroll(base,op) \ - __asm__ __volatile__( \ - ".set noreorder;\n" \ - ".set mips3;\n" \ - "cache %1, (%0);\n" \ - ".set mips0;\n" \ - ".set reorder\n" \ - : \ - : "r" (base), \ - "i" (op)); - -static __inline__ void blast_icache(void) -{ - unsigned long start = KSEG0; - unsigned long end = (start + icache_size); - - while(start < end) { - cache_unroll(start,Index_Invalidate_I); - start += ic_lsize; - } -} - -/**********************************************************************/ -#ifndef INT_MAX -#define INT_MAX (((1 << 30)-1)*2 + 1) -#endif -/**********************************************************************/ -#ifdef ENABLE_BUNZIP_CHECKING - -#define REBOOT do {} while (1) - -#else - -#define REBOOT ((void) 0) - -#endif -/**********************************************************************/ -#ifdef ENABLE_LEDS - -#define LED_POWER_ON 0x02 /* OFF == flashing */ -#define LED_DMZ_OFF 0x80 -#define LED_WLAN_OFF 0x01 - -#define LED_CODE_0 (LED_POWER_ON | LED_DMZ_OFF | LED_WLAN_OFF) -#define LED_CODE_1 (LED_POWER_ON | LED_DMZ_OFF) -#define LED_CODE_2 (LED_POWER_ON | LED_WLAN_OFF) -#define LED_CODE_3 (LED_POWER_ON) - -#define SET_LED_ERROR(X) \ - do { \ - *(volatile u8*)(KSEG1ADDR(0x18000064))=(X & ~LED_POWER_ON); \ - *(volatile u8*)(KSEG1ADDR(0x18000068))=0; /* Disable changes */ \ - REBOOT; \ - } while (0) - -#define SET_LED(X) *(volatile u8*)(KSEG1ADDR(0x18000064))=X; - - -typedef unsigned char u8; - -#else - -#define SET_LED_ERROR(X) REBOOT -#define SET_LED(X) ((void)0) - -#endif - -/**********************************************************************/ - -/* Constants for huffman coding */ -#define MAX_GROUPS 6 -#define GROUP_SIZE 50 /* 64 would have been more efficient */ -#define MAX_HUFCODE_BITS 20 /* Longest huffman code allowed */ -#define MAX_SYMBOLS 258 /* 256 literals + RUNA + RUNB */ -#define SYMBOL_RUNA 0 -#define SYMBOL_RUNB 1 - -/* Status return values */ -#define RETVAL_OK 0 -#define RETVAL_LAST_BLOCK (-1) -#define RETVAL_NOT_BZIP_DATA (-2) -#define RETVAL_UNEXPECTED_INPUT_EOF (-3) -#define RETVAL_UNEXPECTED_OUTPUT_EOF (-4) -#define RETVAL_DATA_ERROR (-5) -#define RETVAL_OUT_OF_MEMORY (-6) -#define RETVAL_OBSOLETE_INPUT (-7) - -/* Other housekeeping constants */ -#define IOBUF_SIZE 4096 - -/* This is what we know about each huffman coding group */ -struct group_data { - /* We have an extra slot at the end of limit[] for a sentinal value. */ - int limit[MAX_HUFCODE_BITS+1],base[MAX_HUFCODE_BITS],permute[MAX_SYMBOLS]; - int minLen, maxLen; -}; - -/* Structure holding all the housekeeping data, including IO buffers and - memory that persists between calls to bunzip */ -typedef struct { - /* State for interrupting output loop */ - int writeCopies,writePos,writeRunCountdown,writeCount,writeCurrent; - /* I/O tracking data (file handles, buffers, positions, etc.) */ -#if defined(ENABLE_BUNZIP_CHECKING) - int /*in_fd,out_fd,*/ inbufCount,inbufPos /*,outbufPos*/; -#else - int /*in_fd,out_fd,inbufCount,*/ inbufPos /*,outbufPos*/; -#endif - unsigned char *inbuf /*,*outbuf*/; - unsigned int inbufBitCount, inbufBits; - /* The CRC values stored in the block header and calculated from the data */ -#ifdef ENABLE_BUNZIP_CHECKING - unsigned int crc32Table[256],headerCRC, totalCRC, writeCRC; - /* Intermediate buffer and its size (in bytes) */ - unsigned int *dbuf, dbufSize; -#else - unsigned int *dbuf; -#endif - /* These things are a bit too big to go on the stack */ - unsigned char selectors[32768]; /* nSelectors=15 bits */ - struct group_data groups[MAX_GROUPS]; /* huffman coding tables */ -} bunzip_data; - -static int get_next_block(bunzip_data *bd); - -/**********************************************************************/ -/* Undo burrows-wheeler transform on intermediate buffer to produce output. - If start_bunzip was initialized with out_fd=-1, then up to len bytes of - data are written to outbuf. Return value is number of bytes written or - error (all errors are negative numbers). If out_fd!=-1, outbuf and len - are ignored, data is written to out_fd and return is RETVAL_OK or error. -*/ - -static __inline__ int read_bunzip(bunzip_data *bd, char *outbuf, int len) -{ - const unsigned int *dbuf; - int pos,current,previous,gotcount; -#ifdef ENABLE_LEDS - int led_state = LED_CODE_2; -#endif - - /* If last read was short due to end of file, return last block now */ - if(bd->writeCount<0) return bd->writeCount; - - gotcount = 0; - dbuf=bd->dbuf; - pos=bd->writePos; - current=bd->writeCurrent; - - /* We will always have pending decoded data to write into the output - buffer unless this is the very first call (in which case we haven't - huffman-decoded a block into the intermediate buffer yet). */ - - if (bd->writeCopies) { - /* Inside the loop, writeCopies means extra copies (beyond 1) */ - --bd->writeCopies; - /* Loop outputting bytes */ - for(;;) { -#if 0 /* Might want to enable this if passing a limiting size. */ -/* #ifdef ENABLE_BUNZIP_CHECKING */ - /* If the output buffer is full, snapshot state and return */ - if(gotcount >= len) { - bd->writePos=pos; - bd->writeCurrent=current; - bd->writeCopies++; - return len; - } -#endif - /* Write next byte into output buffer, updating CRC */ - outbuf[gotcount++] = current; -#ifdef ENABLE_BUNZIP_CHECKING - bd->writeCRC=(((bd->writeCRC)<<8) - ^bd->crc32Table[((bd->writeCRC)>>24)^current]); -#endif - /* Loop now if we're outputting multiple copies of this byte */ - if (bd->writeCopies) { - --bd->writeCopies; - continue; - } -decode_next_byte: - if (!bd->writeCount--) break; - /* Follow sequence vector to undo Burrows-Wheeler transform */ - previous=current; - pos=dbuf[pos]; - current=pos&0xff; - pos>>=8; - /* After 3 consecutive copies of the same byte, the 4th is a repeat - count. We count down from 4 instead - * of counting up because testing for non-zero is faster */ - if(--bd->writeRunCountdown) { - if(current!=previous) bd->writeRunCountdown=4; - } else { - /* We have a repeated run, this byte indicates the count */ - bd->writeCopies=current; - current=previous; - bd->writeRunCountdown=5; - /* Sometimes there are just 3 bytes (run length 0) */ - if(!bd->writeCopies) goto decode_next_byte; - /* Subtract the 1 copy we'd output anyway to get extras */ - --bd->writeCopies; - } - } -#ifdef ENABLE_BUNZIP_CHECKING - /* Decompression of this block completed successfully */ - bd->writeCRC=~bd->writeCRC; - bd->totalCRC=((bd->totalCRC<<1) | (bd->totalCRC>>31)) ^ bd->writeCRC; - /* If this block had a CRC error, force file level CRC error. */ - if(bd->writeCRC!=bd->headerCRC) { - bd->totalCRC=bd->headerCRC+1; - return RETVAL_LAST_BLOCK; - } -#endif - } - -#ifdef ENABLE_LEDS - if (led_state == LED_CODE_2) { - led_state = LED_CODE_1; - } else { - led_state = LED_CODE_2; - } - SET_LED(led_state); -#endif - - /* Refill the intermediate buffer by huffman-decoding next block of input */ - /* (previous is just a convenient unused temp variable here) */ - previous=get_next_block(bd); -#ifdef ENABLE_BUNZIP_CHECKING - if(previous) { - bd->writeCount=previous; - return (previous!=RETVAL_LAST_BLOCK) ? previous : gotcount; - } - bd->writeCRC=0xffffffffUL; -#else - if (previous) return gotcount; -#endif - pos=bd->writePos; - current=bd->writeCurrent; - goto decode_next_byte; -} - -/**********************************************************************/ -/* WARNING!!! Must be the first function!!! */ - -void load_and_run(unsigned long ra) -{ - int dbuf[900000]; /* Maximum requred */ - bunzip_data bd; - - unsigned int i; -#ifdef ENABLE_BUNZIP_CHECKING - unsigned int j, c; - int r; -#endif - char *p; - -#ifdef ENABLE_LEDS - *(volatile u8*)(KSEG1ADDR(0x18000068))=0x83; /* Allow all bits to change */ - SET_LED(LED_CODE_0); -#endif - -/* memset(&bd,0,sizeof(bunzip_data)); */ - p = (char *) &bd; - for (i = 0 ; i < sizeof(bunzip_data) ; i++) { - p[i] = 0; - } - - /* Find start of flash and adjust for pmon partition. */ - p = ((char *) KSEG1ADDR(BCM4710_FLASH)) + 0x10000; - - SET_LED(LED_CODE_1); - /* Find the start of the bzip'd data. */ - while ((p[0]!='B') || (p[1]!='Z') || (p[2]!='h') /*|| (p[3]!='9')*/) ++p; - SET_LED(LED_CODE_2); - - /* Setup input buffer */ - bd.inbuf=p+4; /* Skip the "BZh9" header. */ -#ifdef ENABLE_BUNZIP_CHECKING - bd.inbufCount=INT_MAX; - /* Init the CRC32 table (big endian) */ - for(i=0;i<256;i++) { - c=i<<24; - for(j=8;j;j--) - c=c&0x80000000 ? (c<<1)^0x04c11db7 : (c<<1); - bd.crc32Table[i]=c; - } - - bd.dbufSize=900000; -#endif - bd.dbuf=dbuf; - - /* Actually do the bunzip */ -#ifdef ENABLE_BUNZIP_CHECKING - r = read_bunzip(&bd, ((char *) LOADADDR), INT_MAX); - if (r > 0) { - if (bd.headerCRC==bd.totalCRC) { - SET_LED(LED_CODE_3); - { - int code = LED_WLAN_OFF; - int i, j; - for (j=0 ; j < 4 ; j++) { - for (i=0; i<(1<<27) ; i++) {} - SET_LED(code); - code ^= LED_WLAN_OFF; - } - } - blast_icache(); - /* Jump to load address */ - ((void (*)(void)) LOADADDR)(); - } else { - SET_LED_ERROR(LED_CODE_3); - } - } else { - SET_LED_ERROR(LED_CODE_2); - } -#else - read_bunzip(&bd, ((char *) LOADADDR), INT_MAX); - blast_icache(); - /* Jump to load address */ - ((void (*)(void)) LOADADDR)(); -#endif -} - -/**********************************************************************/ -/* Return the next nnn bits of input. All reads from the compressed input - are done through this function. All reads are big endian */ -static unsigned int get_bits(bunzip_data *bd, char bits_wanted) -{ - unsigned int bits=0; - - /* If we need to get more data from the byte buffer, do so. (Loop getting - one byte at a time to enforce endianness and avoid unaligned access.) */ - while (bd->inbufBitCount<bits_wanted) { - /* If we need to read more data from file into byte buffer, do so */ -#ifdef ENABLE_BUNZIP_CHECKING - if(bd->inbufPos==bd->inbufCount) { - SET_LED_ERROR(LED_CODE_0); - } -#endif - /* Avoid 32-bit overflow (dump bit buffer to top of output) */ - if(bd->inbufBitCount>=24) { - bits=bd->inbufBits&((1<<bd->inbufBitCount)-1); - bits_wanted-=bd->inbufBitCount; - bits<<=bits_wanted; - bd->inbufBitCount=0; - } - /* Grab next 8 bits of input from buffer. */ - bd->inbufBits=(bd->inbufBits<<8)|bd->inbuf[bd->inbufPos++]; - bd->inbufBitCount+=8; - } - /* Calculate result */ - bd->inbufBitCount-=bits_wanted; - bits|=(bd->inbufBits>>bd->inbufBitCount)&((1<<bits_wanted)-1); - - return bits; -} - -/* Unpacks the next block and sets up for the inverse burrows-wheeler step. */ - -static int get_next_block(bunzip_data *bd) -{ - struct group_data *hufGroup; -#ifdef ENABLE_BUNZIP_CHECKING - int dbufCount,nextSym,dbufSize,groupCount,*base,*limit,selector, - i,j,k,t,runPos,symCount,symTotal,nSelectors,byteCount[256]; -#else - int dbufCount,nextSym,/*dbufSize,*/groupCount,*base,*limit,selector, - i,j,k,t,runPos,symCount,symTotal,nSelectors,byteCount[256]; -#endif - unsigned char uc, symToByte[256], mtfSymbol[256], *selectors; - unsigned int *dbuf,origPtr; - - dbuf=bd->dbuf; -#ifdef ENABLE_BUNZIP_CHECKING - dbufSize=bd->dbufSize; -#endif - selectors=bd->selectors; - /* Read in header signature and CRC, then validate signature. - (last block signature means CRC is for whole file, return now) */ - i = get_bits(bd,24); - j = get_bits(bd,24); -#ifdef ENABLE_BUNZIP_CHECKING - bd->headerCRC=get_bits(bd,32); - if ((i == 0x177245) && (j == 0x385090)) return RETVAL_LAST_BLOCK; - if ((i != 0x314159) || (j != 0x265359)) return RETVAL_NOT_BZIP_DATA; - /* We can add support for blockRandomised if anybody complains. There was - some code for this in busybox 1.0.0-pre3, but nobody ever noticed that - it didn't actually work. */ - if(get_bits(bd,1)) return RETVAL_OBSOLETE_INPUT; - if((origPtr=get_bits(bd,24)) > dbufSize) return RETVAL_DATA_ERROR; -#else - get_bits(bd,32); - if ((i == 0x177245) && (j == 0x385090)) return RETVAL_LAST_BLOCK; - get_bits(bd,1); - origPtr=get_bits(bd,24); -#endif - /* mapping table: if some byte values are never used (encoding things - like ascii text), the compression code removes the gaps to have fewer - symbols to deal with, and writes a sparse bitfield indicating which - values were present. We make a translation table to convert the symbols - back to the corresponding bytes. */ - t=get_bits(bd, 16); - symTotal=0; - for (i=0;i<16;i++) { - if(t&(1<<(15-i))) { - k=get_bits(bd,16); - for(j=0;j<16;j++) - if(k&(1<<(15-j))) symToByte[symTotal++]=(16*i)+j; - } - } - /* How many different huffman coding groups does this block use? */ - groupCount=get_bits(bd,3); -#ifdef ENABLE_BUNZIP_CHECKING - if (groupCount<2 || groupCount>MAX_GROUPS) return RETVAL_DATA_ERROR; -#endif - /* nSelectors: Every GROUP_SIZE many symbols we select a new huffman coding - group. Read in the group selector list, which is stored as MTF encoded - bit runs. (MTF=Move To Front, as each value is used it's moved to the - start of the list.) */ -#ifdef ENABLE_BUNZIP_CHECKING - if(!(nSelectors=get_bits(bd, 15))) return RETVAL_DATA_ERROR; -#else - nSelectors=get_bits(bd, 15); -#endif - for(i=0; i<groupCount; i++) mtfSymbol[i] = i; - for(i=0; i<nSelectors; i++) { - /* Get next value */ -#ifdef ENABLE_BUNZIP_CHECKING - for(j=0;get_bits(bd,1);j++) if (j>=groupCount) return RETVAL_DATA_ERROR; -#else - for(j=0;get_bits(bd,1);j++) ; -#endif - /* Decode MTF to get the next selector */ - uc = mtfSymbol[j]; - for(;j;j--) mtfSymbol[j] = mtfSymbol[j-1]; - mtfSymbol[0]=selectors[i]=uc; - } - /* Read the huffman coding tables for each group, which code for symTotal - literal symbols, plus two run symbols (RUNA, RUNB) */ - symCount=symTotal+2; - for (j=0; j<groupCount; j++) { - unsigned char length[MAX_SYMBOLS],temp[MAX_HUFCODE_BITS+1]; - int minLen, maxLen, pp; - /* Read huffman code lengths for each symbol. They're stored in - a way similar to mtf; record a starting value for the first symbol, - and an offset from the previous value for everys symbol after that. - (Subtracting 1 before the loop and then adding it back at the end is - an optimization that makes the test inside the loop simpler: symbol - length 0 becomes negative, so an unsigned inequality catches it.) */ - t=get_bits(bd, 5)-1; - for (i = 0; i < symCount; i++) { - for(;;) { -#ifdef ENABLE_BUNZIP_CHECKING - if (((unsigned)t) > (MAX_HUFCODE_BITS-1)) - return RETVAL_DATA_ERROR; -#endif - /* If first bit is 0, stop. Else second bit indicates whether - to increment or decrement the value. Optimization: grab 2 - bits and unget the second if the first was 0. */ - k = get_bits(bd,2); - if (k < 2) { - bd->inbufBitCount++; - break; - } - /* Add one if second bit 1, else subtract 1. Avoids if/else */ - t+=(((k+1)&2)-1); - } - /* Correct for the initial -1, to get the final symbol length */ - length[i]=t+1; - } - /* Find largest and smallest lengths in this group */ - minLen=maxLen=length[0]; - for(i = 1; i < symCount; i++) { - if(length[i] > maxLen) maxLen = length[i]; - else if(length[i] < minLen) minLen = length[i]; - } - /* Calculate permute[], base[], and limit[] tables from length[]. - * - * permute[] is the lookup table for converting huffman coded symbols - * into decoded symbols. base[] is the amount to subtract from the - * value of a huffman symbol of a given length when using permute[]. - * - * limit[] indicates the largest numerical value a symbol with a given - * number of bits can have. This is how the huffman codes can vary in - * length: each code with a value>limit[length] needs another bit. - */ - hufGroup=bd->groups+j; - hufGroup->minLen = minLen; - hufGroup->maxLen = maxLen; - /* Note that minLen can't be smaller than 1, so we adjust the base - and limit array pointers so we're not always wasting the first - entry. We do this again when using them (during symbol decoding).*/ - base=hufGroup->base-1; - limit=hufGroup->limit-1; - /* Calculate permute[]. Concurently, initialize temp[] and limit[]. */ - pp=0; - for(i=minLen;i<=maxLen;i++) { - temp[i]=limit[i]=0; - for(t=0;t<symCount;t++) - if(length[t]==i) hufGroup->permute[pp++] = t; - } - /* Count symbols coded for at each bit length */ - for (i=0;i<symCount;i++) temp[length[i]]++; - /* Calculate limit[] (the largest symbol-coding value at each bit - * length, which is (previous limit<<1)+symbols at this level), and - * base[] (number of symbols to ignore at each bit length, which is - * limit minus the cumulative count of symbols coded for already). */ - pp=t=0; - for (i=minLen; i<maxLen; i++) { - pp+=temp[i]; - /* We read the largest possible symbol size and then unget bits - after determining how many we need, and those extra bits could - be set to anything. (They're noise from future symbols.) At - each level we're really only interested in the first few bits, - so here we set all the trailing to-be-ignored bits to 1 so they - don't affect the value>limit[length] comparison. */ - limit[i]= (pp << (maxLen - i)) - 1; - pp<<=1; - base[i+1]=pp-(t+=temp[i]); - } - limit[maxLen+1] = INT_MAX; /* Sentinal value for reading next sym. */ - limit[maxLen]=pp+temp[maxLen]-1; - base[minLen]=0; - } - /* We've finished reading and digesting the block header. Now read this - block's huffman coded symbols from the file and undo the huffman coding - and run length encoding, saving the result into dbuf[dbufCount++]=uc */ - - /* Initialize symbol occurrence counters and symbol Move To Front table */ - for(i=0;i<256;i++) { - byteCount[i] = 0; - mtfSymbol[i]=(unsigned char)i; - } - /* Loop through compressed symbols. */ - runPos=dbufCount=symCount=selector=0; - for(;;) { - /* Determine which huffman coding group to use. */ - if(!(symCount--)) { - symCount=GROUP_SIZE-1; -#ifdef ENABLE_BUNZIP_CHECKING - if(selector>=nSelectors) return RETVAL_DATA_ERROR; -#endif - hufGroup=bd->groups+selectors[selector++]; - base=hufGroup->base-1; - limit=hufGroup->limit-1; - } - /* Read next huffman-coded symbol. */ - /* Note: It is far cheaper to read maxLen bits and back up than it is - to read minLen bits and then an additional bit at a time, testing - as we go. Because there is a trailing last block (with file CRC), - there is no danger of the overread causing an unexpected EOF for a - valid compressed file. As a further optimization, we do the read - inline (falling back to a call to get_bits if the buffer runs - dry). The following (up to got_huff_bits:) is equivalent to - j=get_bits(bd,hufGroup->maxLen); - */ - while (bd->inbufBitCount<hufGroup->maxLen) { -#ifdef ENABLE_BUNZIP_CHECKING - if(bd->inbufPos==bd->inbufCount) { - j = get_bits(bd,hufGroup->maxLen); - goto got_huff_bits; - } -#endif - bd->inbufBits=(bd->inbufBits<<8)|bd->inbuf[bd->inbufPos++]; - bd->inbufBitCount+=8; - }; - bd->inbufBitCount-=hufGroup->maxLen; - j = (bd->inbufBits>>bd->inbufBitCount)&((1<<hufGroup->maxLen)-1); -got_huff_bits: - /* Figure how how many bits are in next symbol and unget extras */ - i=hufGroup->minLen; - while(j>limit[i]) ++i; - bd->inbufBitCount += (hufGroup->maxLen - i); - /* Huffman decode value to get nextSym (with bounds checking) */ -#ifdef ENABLE_BUNZIP_CHECKING - if ((i > hufGroup->maxLen) - || (((unsigned)(j=(j>>(hufGroup->maxLen-i))-base[i])) - >= MAX_SYMBOLS)) - return RETVAL_DATA_ERROR; -#else - j=(j>>(hufGroup->maxLen-i))-base[i]; -#endif - nextSym = hufGroup->permute[j]; - /* We have now decoded the symbol, which indicates either a new literal - byte, or a repeated run of the most recent literal byte. First, - check if nextSym indicates a repeated run, and if so loop collecting - how many times to repeat the last literal. */ - if (((unsigned)nextSym) <= SYMBOL_RUNB) { /* RUNA or RUNB */ - /* If this is the start of a new run, zero out counter */ - if(!runPos) { - runPos = 1; - t = 0; - } - /* Neat trick that saves 1 symbol: instead of or-ing 0 or 1 at - each bit position, add 1 or 2 instead. For example, - 1011 is 1<<0 + 1<<1 + 2<<2. 1010 is 2<<0 + 2<<1 + 1<<2. - You can make any bit pattern that way using 1 less symbol than - the basic or 0/1 method (except all bits 0, which would use no - symbols, but a run of length 0 doesn't mean anything in this - context). Thus space is saved. */ - t += (runPos << nextSym); /* +runPos if RUNA; +2*runPos if RUNB */ - runPos <<= 1; - continue; - } - /* When we hit the first non-run symbol after a run, we now know - how many times to repeat the last literal, so append that many - copies to our buffer of decoded symbols (dbuf) now. (The last - literal used is the one at the head of the mtfSymbol array.) */ - if(runPos) { - runPos=0; -#ifdef ENABLE_BUNZIP_CHECKING - if(dbufCount+t>=dbufSize) return RETVAL_DATA_ERROR; -#endif - - uc = symToByte[mtfSymbol[0]]; - byteCount[uc] += t; - while(t--) dbuf[dbufCount++]=uc; - } - /* Is this the terminating symbol? */ - if(nextSym>symTotal) break; - /* At this point, nextSym indicates a new literal character. Subtract - one to get the position in the MTF array at which this literal is - currently to be found. (Note that the result can't be -1 or 0, - because 0 and 1 are RUNA and RUNB. But another instance of the - first symbol in the mtf array, position 0, would have been handled - as part of a run above. Therefore 1 unused mtf position minus - 2 non-literal nextSym values equals -1.) */ -#ifdef ENABLE_BUNZIP_CHECKING - if(dbufCount>=dbufSize) return RETVAL_DATA_ERROR; -#endif - i = nextSym - 1; - uc = mtfSymbol[i]; - /* Adjust the MTF array. Since we typically expect to move only a - * small number of symbols, and are bound by 256 in any case, using - * memmove here would typically be bigger and slower due to function - * call overhead and other assorted setup costs. */ - do { - mtfSymbol[i] = mtfSymbol[i-1]; - } while (--i); - mtfSymbol[0] = uc; - uc=symToByte[uc]; - /* We have our literal byte. Save it into dbuf. */ - byteCount[uc]++; - dbuf[dbufCount++] = (unsigned int)uc; - } - /* At this point, we've read all the huffman-coded symbols (and repeated - runs) for this block from the input stream, and decoded them into the - intermediate buffer. There are dbufCount many decoded bytes in dbuf[]. - Now undo the Burrows-Wheeler transform on dbuf. - See http://dogma.net/markn/articles/bwt/bwt.htm - */ - /* Turn byteCount into cumulative occurrence counts of 0 to n-1. */ - j=0; - for(i=0;i<256;i++) { - k=j+byteCount[i]; - byteCount[i] = j; - j=k; - } - /* Figure out what order dbuf would be in if we sorted it. */ - for (i=0;i<dbufCount;i++) { - uc=(unsigned char)(dbuf[i] & 0xff); - dbuf[byteCount[uc]] |= (i << 8); - byteCount[uc]++; - } - /* Decode first byte by hand to initialize "previous" byte. Note that it - doesn't get output, and if the first three characters are identical - it doesn't qualify as a run (hence writeRunCountdown=5). */ - if(dbufCount) { -#ifdef ENABLE_BUNZIP_CHECKING - if(origPtr>=dbufCount) return RETVAL_DATA_ERROR; -#endif - bd->writePos=dbuf[origPtr]; - bd->writeCurrent=(unsigned char)(bd->writePos&0xff); - bd->writePos>>=8; - bd->writeRunCountdown=5; - } - bd->writeCount=dbufCount; - - return RETVAL_OK; -} diff --git a/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/decompress_bunzip2.lds b/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/decompress_bunzip2.lds deleted file mode 100644 index 6a91b49c2..000000000 --- a/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/decompress_bunzip2.lds +++ /dev/null @@ -1,17 +0,0 @@ -OUTPUT_ARCH(mips) -ENTRY(load_and_run) -SECTIONS { - . = 0x81000000-0x4000; - .text : { - *(.text) - *(.rodata) - } - - .data : { - *(.data) - } - - .bss : { - *(.bss) - } -} diff --git a/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/decompress_bunzip2.lds.in b/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/decompress_bunzip2.lds.in deleted file mode 100644 index 95cf83ebd..000000000 --- a/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/decompress_bunzip2.lds.in +++ /dev/null @@ -1,17 +0,0 @@ -OUTPUT_ARCH(mips) -ENTRY(load_and_run) -SECTIONS { - . = BZ_TEXT_START; - .text : { - *(.text) - *(.rodata) - } - - .data : { - *(.data) - } - - .bss : { - *(.bss) - } -} diff --git a/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/head.S b/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/head.S deleted file mode 100644 index c3ecdc47f..000000000 --- a/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/head.S +++ /dev/null @@ -1,26 +0,0 @@ -/* Copyright 2004 Manuel Novoa III (mjn3@codepoet.org) */ -/* Licensed under the linux kernel's version of the GPL. */ - -#include <asm/asm.h> -#include <asm/regdef.h> - - .text - LEAF(startup) - .set noreorder - - li t1, BZ_TEXT_START - add a0, t1, 0 - la a1, code_start - la a2, code_stop -$L1: - lw t0, 0(a1) - sw t0, 0(a0) - add a1, 4 - add a0, 4 - blt a1, a2, $L1 - - add sp, t1, -4 - jal t1 - - .set reorder - END(startup) diff --git a/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/vmlinux.lds b/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/vmlinux.lds deleted file mode 100644 index 9d95adbfa..000000000 --- a/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/vmlinux.lds +++ /dev/null @@ -1,17 +0,0 @@ -OUTPUT_ARCH(mips) -ENTRY(startup) -SECTIONS { - . = 0x80001000; - .text : { - *(.text) - *(.rodata) - } - - .data : { - *(.data) - } - - .bss : { - *(.bss) - } -} diff --git a/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/vmlinux.lds.in b/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/vmlinux.lds.in deleted file mode 100644 index 20f2ea98e..000000000 --- a/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/vmlinux.lds.in +++ /dev/null @@ -1,17 +0,0 @@ -OUTPUT_ARCH(mips) -ENTRY(startup) -SECTIONS { - . = TEXT_START; - .text : { - *(.text) - *(.rodata) - } - - .data : { - *(.data) - } - - .bss : { - *(.bss) - } -} |