From mboxrd@z Thu Jan 1 00:00:00 1970 From: HeLei Date: Tue, 3 Nov 2009 19:08:39 +0800 Subject: [U-Boot] Does uboot EBS(erase block summary) to reduce JFFS2 scaning time? In-Reply-To: References: Message-ID: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de > Subject: Re: [U-Boot] Does uboot EBS(erase block summary) to reduce JFFS2 scaning time? > CC: leon.he at msn.com; u-boot at lists.denx.de > From: joakim.tjernlund at transmode.se > Date: Tue, 3 Nov 2009 11:55:18 +0100 > > > > > HeLei wrote on 03/11/2009 09:21:04: > > > > > > Thank you, Jocke > > > > > - impl. a better crc32(use the one from linux) > > > > Attaching a very crude port of linux crc32. This boots a linux img > > for me and handles the environment crc as well. Feel free > > to clean it up and submit to u-boot. > > > > Jocke > > So I could not help myself, here is a better port of crc32 to u-boot. > You will probably get at small conflict due to LINK_OFF, just remove > the LINK_OFF stuff for now. > Could you test and report? > Do you have a little or big endian target? I cannot test it for current stage, for project time issue. I'll test it and report some time later. Our target is ARM11, little endian. > > Jocke > > > From 7b98aab2aa940b47b81d3a548c8d786016cd2ee8 Mon Sep 17 00:00:00 2001 > From: Joakim Tjernlund > Date: Tue, 3 Nov 2009 11:39:43 +0100 > Subject: [PATCH] crc32: Impl. linux optimized crc32() > > Ported over the more efficient linux crc32() function. > --- > lib_generic/crc32.c | 208 +++++++++++++++++++++++++++++---------------------- > 1 files changed, 117 insertions(+), 91 deletions(-) > > diff --git a/lib_generic/crc32.c b/lib_generic/crc32.c > index 2e11548..d3bb92b 100644 > --- a/lib_generic/crc32.c > +++ b/lib_generic/crc32.c > @@ -13,6 +13,7 @@ > #else > #include > #endif > +#include > > #if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG) > #include > @@ -52,6 +53,7 @@ local void make_crc_table OF((void)); > the information needed to generate CRC's on data a byte at a time for all > combinations of CRC register values and incoming bytes. > */ > +#define tole(x) cpu_to_le32(x) > local void make_crc_table() > { > uint32_t c; > @@ -70,7 +72,7 @@ local void make_crc_table() > c = (uLong)n; > for (k = 0; k < 8; k++) > c = c & 1 ? poly ^ (c >> 1) : c >> 1; > - crc_table[n] = c; > + crc_table[n] = tole(c); > } > crc_table_empty = 0; > } > @@ -78,59 +80,73 @@ local void make_crc_table() > /* ======================================================================== > * Table of CRC-32's of all single-byte values (made by make_crc_table) > */ > +#define tole(x) __constant_cpu_to_le32(x) > + > local const uint32_t crc_table[256] = { > - 0x00000000L, 0x77073096L, 0xee0e612cL, 0x990951baL, 0x076dc419L, > - 0x706af48fL, 0xe963a535L, 0x9e6495a3L, 0x0edb8832L, 0x79dcb8a4L, > - 0xe0d5e91eL, 0x97d2d988L, 0x09b64c2bL, 0x7eb17cbdL, 0xe7b82d07L, > - 0x90bf1d91L, 0x1db71064L, 0x6ab020f2L, 0xf3b97148L, 0x84be41deL, > - 0x1adad47dL, 0x6ddde4ebL, 0xf4d4b551L, 0x83d385c7L, 0x136c9856L, > - 0x646ba8c0L, 0xfd62f97aL, 0x8a65c9ecL, 0x14015c4fL, 0x63066cd9L, > - 0xfa0f3d63L, 0x8d080df5L, 0x3b6e20c8L, 0x4c69105eL, 0xd56041e4L, > - 0xa2677172L, 0x3c03e4d1L, 0x4b04d447L, 0xd20d85fdL, 0xa50ab56bL, > - 0x35b5a8faL, 0x42b2986cL, 0xdbbbc9d6L, 0xacbcf940L, 0x32d86ce3L, > - 0x45df5c75L, 0xdcd60dcfL, 0xabd13d59L, 0x26d930acL, 0x51de003aL, > - 0xc8d75180L, 0xbfd06116L, 0x21b4f4b5L, 0x56b3c423L, 0xcfba9599L, > - 0xb8bda50fL, 0x2802b89eL, 0x5f058808L, 0xc60cd9b2L, 0xb10be924L, > - 0x2f6f7c87L, 0x58684c11L, 0xc1611dabL, 0xb6662d3dL, 0x76dc4190L, > - 0x01db7106L, 0x98d220bcL, 0xefd5102aL, 0x71b18589L, 0x06b6b51fL, > - 0x9fbfe4a5L, 0xe8b8d433L, 0x7807c9a2L, 0x0f00f934L, 0x9609a88eL, > - 0xe10e9818L, 0x7f6a0dbbL, 0x086d3d2dL, 0x91646c97L, 0xe6635c01L, > - 0x6b6b51f4L, 0x1c6c6162L, 0x856530d8L, 0xf262004eL, 0x6c0695edL, > - 0x1b01a57bL, 0x8208f4c1L, 0xf50fc457L, 0x65b0d9c6L, 0x12b7e950L, > - 0x8bbeb8eaL, 0xfcb9887cL, 0x62dd1ddfL, 0x15da2d49L, 0x8cd37cf3L, > - 0xfbd44c65L, 0x4db26158L, 0x3ab551ceL, 0xa3bc0074L, 0xd4bb30e2L, > - 0x4adfa541L, 0x3dd895d7L, 0xa4d1c46dL, 0xd3d6f4fbL, 0x4369e96aL, > - 0x346ed9fcL, 0xad678846L, 0xda60b8d0L, 0x44042d73L, 0x33031de5L, > - 0xaa0a4c5fL, 0xdd0d7cc9L, 0x5005713cL, 0x270241aaL, 0xbe0b1010L, > - 0xc90c2086L, 0x5768b525L, 0x206f85b3L, 0xb966d409L, 0xce61e49fL, > - 0x5edef90eL, 0x29d9c998L, 0xb0d09822L, 0xc7d7a8b4L, 0x59b33d17L, > - 0x2eb40d81L, 0xb7bd5c3bL, 0xc0ba6cadL, 0xedb88320L, 0x9abfb3b6L, > - 0x03b6e20cL, 0x74b1d29aL, 0xead54739L, 0x9dd277afL, 0x04db2615L, > - 0x73dc1683L, 0xe3630b12L, 0x94643b84L, 0x0d6d6a3eL, 0x7a6a5aa8L, > - 0xe40ecf0bL, 0x9309ff9dL, 0x0a00ae27L, 0x7d079eb1L, 0xf00f9344L, > - 0x8708a3d2L, 0x1e01f268L, 0x6906c2feL, 0xf762575dL, 0x806567cbL, > - 0x196c3671L, 0x6e6b06e7L, 0xfed41b76L, 0x89d32be0L, 0x10da7a5aL, > - 0x67dd4accL, 0xf9b9df6fL, 0x8ebeeff9L, 0x17b7be43L, 0x60b08ed5L, > - 0xd6d6a3e8L, 0xa1d1937eL, 0x38d8c2c4L, 0x4fdff252L, 0xd1bb67f1L, > - 0xa6bc5767L, 0x3fb506ddL, 0x48b2364bL, 0xd80d2bdaL, 0xaf0a1b4cL, > - 0x36034af6L, 0x41047a60L, 0xdf60efc3L, 0xa867df55L, 0x316e8eefL, > - 0x4669be79L, 0xcb61b38cL, 0xbc66831aL, 0x256fd2a0L, 0x5268e236L, > - 0xcc0c7795L, 0xbb0b4703L, 0x220216b9L, 0x5505262fL, 0xc5ba3bbeL, > - 0xb2bd0b28L, 0x2bb45a92L, 0x5cb36a04L, 0xc2d7ffa7L, 0xb5d0cf31L, > - 0x2cd99e8bL, 0x5bdeae1dL, 0x9b64c2b0L, 0xec63f226L, 0x756aa39cL, > - 0x026d930aL, 0x9c0906a9L, 0xeb0e363fL, 0x72076785L, 0x05005713L, > - 0x95bf4a82L, 0xe2b87a14L, 0x7bb12baeL, 0x0cb61b38L, 0x92d28e9bL, > - 0xe5d5be0dL, 0x7cdcefb7L, 0x0bdbdf21L, 0x86d3d2d4L, 0xf1d4e242L, > - 0x68ddb3f8L, 0x1fda836eL, 0x81be16cdL, 0xf6b9265bL, 0x6fb077e1L, > - 0x18b74777L, 0x88085ae6L, 0xff0f6a70L, 0x66063bcaL, 0x11010b5cL, > - 0x8f659effL, 0xf862ae69L, 0x616bffd3L, 0x166ccf45L, 0xa00ae278L, > - 0xd70dd2eeL, 0x4e048354L, 0x3903b3c2L, 0xa7672661L, 0xd06016f7L, > - 0x4969474dL, 0x3e6e77dbL, 0xaed16a4aL, 0xd9d65adcL, 0x40df0b66L, > - 0x37d83bf0L, 0xa9bcae53L, 0xdebb9ec5L, 0x47b2cf7fL, 0x30b5ffe9L, > - 0xbdbdf21cL, 0xcabac28aL, 0x53b39330L, 0x24b4a3a6L, 0xbad03605L, > - 0xcdd70693L, 0x54de5729L, 0x23d967bfL, 0xb3667a2eL, 0xc4614ab8L, > - 0x5d681b02L, 0x2a6f2b94L, 0xb40bbe37L, 0xc30c8ea1L, 0x5a05df1bL, > - 0x2d02ef8dL > +tole(0x00000000L), tole(0x77073096L), tole(0xee0e612cL), tole(0x990951baL), > +tole(0x076dc419L), tole(0x706af48fL), tole(0xe963a535L), tole(0x9e6495a3L), > +tole(0x0edb8832L), tole(0x79dcb8a4L), tole(0xe0d5e91eL), tole(0x97d2d988L), > +tole(0x09b64c2bL), tole(0x7eb17cbdL), tole(0xe7b82d07L), tole(0x90bf1d91L), > +tole(0x1db71064L), tole(0x6ab020f2L), tole(0xf3b97148L), tole(0x84be41deL), > +tole(0x1adad47dL), tole(0x6ddde4ebL), tole(0xf4d4b551L), tole(0x83d385c7L), > +tole(0x136c9856L), tole(0x646ba8c0L), tole(0xfd62f97aL), tole(0x8a65c9ecL), > +tole(0x14015c4fL), tole(0x63066cd9L), tole(0xfa0f3d63L), tole(0x8d080df5L), > +tole(0x3b6e20c8L), tole(0x4c69105eL), tole(0xd56041e4L), tole(0xa2677172L), > +tole(0x3c03e4d1L), tole(0x4b04d447L), tole(0xd20d85fdL), tole(0xa50ab56bL), > +tole(0x35b5a8faL), tole(0x42b2986cL), tole(0xdbbbc9d6L), tole(0xacbcf940L), > +tole(0x32d86ce3L), tole(0x45df5c75L), tole(0xdcd60dcfL), tole(0xabd13d59L), > +tole(0x26d930acL), tole(0x51de003aL), tole(0xc8d75180L), tole(0xbfd06116L), > +tole(0x21b4f4b5L), tole(0x56b3c423L), tole(0xcfba9599L), tole(0xb8bda50fL), > +tole(0x2802b89eL), tole(0x5f058808L), tole(0xc60cd9b2L), tole(0xb10be924L), > +tole(0x2f6f7c87L), tole(0x58684c11L), tole(0xc1611dabL), tole(0xb6662d3dL), > +tole(0x76dc4190L), tole(0x01db7106L), tole(0x98d220bcL), tole(0xefd5102aL), > +tole(0x71b18589L), tole(0x06b6b51fL), tole(0x9fbfe4a5L), tole(0xe8b8d433L), > +tole(0x7807c9a2L), tole(0x0f00f934L), tole(0x9609a88eL), tole(0xe10e9818L), > +tole(0x7f6a0dbbL), tole(0x086d3d2dL), tole(0x91646c97L), tole(0xe6635c01L), > +tole(0x6b6b51f4L), tole(0x1c6c6162L), tole(0x856530d8L), tole(0xf262004eL), > +tole(0x6c0695edL), tole(0x1b01a57bL), tole(0x8208f4c1L), tole(0xf50fc457L), > +tole(0x65b0d9c6L), tole(0x12b7e950L), tole(0x8bbeb8eaL), tole(0xfcb9887cL), > +tole(0x62dd1ddfL), tole(0x15da2d49L), tole(0x8cd37cf3L), tole(0xfbd44c65L), > +tole(0x4db26158L), tole(0x3ab551ceL), tole(0xa3bc0074L), tole(0xd4bb30e2L), > +tole(0x4adfa541L), tole(0x3dd895d7L), tole(0xa4d1c46dL), tole(0xd3d6f4fbL), > +tole(0x4369e96aL), tole(0x346ed9fcL), tole(0xad678846L), tole(0xda60b8d0L), > +tole(0x44042d73L), tole(0x33031de5L), tole(0xaa0a4c5fL), tole(0xdd0d7cc9L), > +tole(0x5005713cL), tole(0x270241aaL), tole(0xbe0b1010L), tole(0xc90c2086L), > +tole(0x5768b525L), tole(0x206f85b3L), tole(0xb966d409L), tole(0xce61e49fL), > +tole(0x5edef90eL), tole(0x29d9c998L), tole(0xb0d09822L), tole(0xc7d7a8b4L), > +tole(0x59b33d17L), tole(0x2eb40d81L), tole(0xb7bd5c3bL), tole(0xc0ba6cadL), > +tole(0xedb88320L), tole(0x9abfb3b6L), tole(0x03b6e20cL), tole(0x74b1d29aL), > +tole(0xead54739L), tole(0x9dd277afL), tole(0x04db2615L), tole(0x73dc1683L), > +tole(0xe3630b12L), tole(0x94643b84L), tole(0x0d6d6a3eL), tole(0x7a6a5aa8L), > +tole(0xe40ecf0bL), tole(0x9309ff9dL), tole(0x0a00ae27L), tole(0x7d079eb1L), > +tole(0xf00f9344L), tole(0x8708a3d2L), tole(0x1e01f268L), tole(0x6906c2feL), > +tole(0xf762575dL), tole(0x806567cbL), tole(0x196c3671L), tole(0x6e6b06e7L), > +tole(0xfed41b76L), tole(0x89d32be0L), tole(0x10da7a5aL), tole(0x67dd4accL), > +tole(0xf9b9df6fL), tole(0x8ebeeff9L), tole(0x17b7be43L), tole(0x60b08ed5L), > +tole(0xd6d6a3e8L), tole(0xa1d1937eL), tole(0x38d8c2c4L), tole(0x4fdff252L), > +tole(0xd1bb67f1L), tole(0xa6bc5767L), tole(0x3fb506ddL), tole(0x48b2364bL), > +tole(0xd80d2bdaL), tole(0xaf0a1b4cL), tole(0x36034af6L), tole(0x41047a60L), > +tole(0xdf60efc3L), tole(0xa867df55L), tole(0x316e8eefL), tole(0x4669be79L), > +tole(0xcb61b38cL), tole(0xbc66831aL), tole(0x256fd2a0L), tole(0x5268e236L), > +tole(0xcc0c7795L), tole(0xbb0b4703L), tole(0x220216b9L), tole(0x5505262fL), > +tole(0xc5ba3bbeL), tole(0xb2bd0b28L), tole(0x2bb45a92L), tole(0x5cb36a04L), > +tole(0xc2d7ffa7L), tole(0xb5d0cf31L), tole(0x2cd99e8bL), tole(0x5bdeae1dL), > +tole(0x9b64c2b0L), tole(0xec63f226L), tole(0x756aa39cL), tole(0x026d930aL), > +tole(0x9c0906a9L), tole(0xeb0e363fL), tole(0x72076785L), tole(0x05005713L), > +tole(0x95bf4a82L), tole(0xe2b87a14L), tole(0x7bb12baeL), tole(0x0cb61b38L), > +tole(0x92d28e9bL), tole(0xe5d5be0dL), tole(0x7cdcefb7L), tole(0x0bdbdf21L), > +tole(0x86d3d2d4L), tole(0xf1d4e242L), tole(0x68ddb3f8L), tole(0x1fda836eL), > +tole(0x81be16cdL), tole(0xf6b9265bL), tole(0x6fb077e1L), tole(0x18b74777L), > +tole(0x88085ae6L), tole(0xff0f6a70L), tole(0x66063bcaL), tole(0x11010b5cL), > +tole(0x8f659effL), tole(0xf862ae69L), tole(0x616bffd3L), tole(0x166ccf45L), > +tole(0xa00ae278L), tole(0xd70dd2eeL), tole(0x4e048354L), tole(0x3903b3c2L), > +tole(0xa7672661L), tole(0xd06016f7L), tole(0x4969474dL), tole(0x3e6e77dbL), > +tole(0xaed16a4aL), tole(0xd9d65adcL), tole(0x40df0b66L), tole(0x37d83bf0L), > +tole(0xa9bcae53L), tole(0xdebb9ec5L), tole(0x47b2cf7fL), tole(0x30b5ffe9L), > +tole(0xbdbdf21cL), tole(0xcabac28aL), tole(0x53b39330L), tole(0x24b4a3a6L), > +tole(0xbad03605L), tole(0xcdd70693L), tole(0x54de5729L), tole(0x23d967bfL), > +tole(0xb3667a2eL), tole(0xc4614ab8L), tole(0x5d681b02L), tole(0x2a6f2b94L), > +tole(0xb40bbe37L), tole(0xc30c8ea1L), tole(0x5a05df1bL), tole(0x2d02ef8dL) > }; > #endif > > @@ -148,60 +164,70 @@ const uint32_t * ZEXPORT get_crc_table() > #endif > > /* ========================================================================= */ > -#define DO1(buf) crc = crc_tab[((int)crc ^ (*buf++)) & 0xff] ^ (crc >> 8); > -#define DO2(buf) DO1(buf); DO1(buf); > -#define DO4(buf) DO2(buf); DO2(buf); > -#define DO8(buf) DO4(buf); DO4(buf); > +# ifdef __LITTLE_ENDIAN > +# define DO_CRC(x) crc = tab[ (crc ^ (x)) & 255 ] ^ (crc>>8) > +# else > +# define DO_CRC(x) crc = tab[ ((crc >> 24) ^ (x)) & 255] ^ (crc<<8) > +# endif > > /* ========================================================================= */ > -uint32_t ZEXPORT crc32 (uint32_t crc, const Bytef *buf, uInt len) > + > +/* No ones complement version. JFFS2 (and other things ?) > + * don't use ones compliment in their CRC calculations. > + */ > +uint32_t ZEXPORT crc32_no_comp(uint32_t crc, const Bytef *p, uInt len) > { > #ifdef LINK_OFF > - const uint32_t *crc_tab = LINK_OFF(crc_table); > + const uint32_t *tab = LINK_OFF(crc_table); > #else > - const uint32_t *crc_tab = crc_table; > + const uint32_t *tab = crc_table; > #endif > + const uint32_t *b =(uint32_t *)p; > #ifdef DYNAMIC_CRC_TABLE > if (crc_table_empty) > make_crc_table(); > #endif > - crc = crc ^ 0xffffffffL; > - while (len >= 8) > - { > - DO8(buf); > - len -= 8; > + crc = __cpu_to_le32(crc); > + /* Align it */ > + if(((long)b)&3 && len){ > + do { > + uint8_t *p = (uint8_t *)b; > + DO_CRC(*p++); > + b = (void *)p; > + } while ((--len) && ((long)b)&3 ); > } > - if (len) do { > - DO1(buf); > - } while (--len); > - return crc ^ 0xffffffffL; > + if(len >= 4){ > + /* load data 32 bits wide, xor data 32 bits wide. */ > + size_t save_len = len & 3; > + len = len >> 2; > + --b; /* use pre increment below(*++b) for speed */ > + do { > + crc ^= *++b; > + DO_CRC(0); > + DO_CRC(0); > + DO_CRC(0); > + DO_CRC(0); > + } while (--len); > + b++; /* point to next byte(s) */ > + len = save_len; > + } > + /* And the last few bytes */ > + if(len){ > + do { > + uint8_t *p = (uint8_t *)b; > + DO_CRC(*p++); > + b = (void *)p; > + } while (--len); > + } > + return __le32_to_cpu(crc); > } > +#undef DO_CRC > > -#if defined(CONFIG_CMD_JFFS2) || defined(CONFIG_CMD_NAND) > - > -/* No ones complement version. JFFS2 (and other things ?) > - * don't use ones compliment in their CRC calculations. > - */ > -uint32_t ZEXPORT crc32_no_comp(uint32_t crc, const Bytef *buf, uInt len) > +uint32_t ZEXPORT crc32 (uint32_t crc, const Bytef *p, uInt len) > { > -#ifdef DYNAMIC_CRC_TABLE > - if (crc_table_empty) > - make_crc_table(); > -#endif > - while (len >= 8) > - { > - DO8(buf); > - len -= 8; > - } > - if (len) do { > - DO1(buf); > - } while (--len); > - > - return crc; > + return crc32_no_comp(crc ^ 0xffffffffL, p, len) ^ 0xffffffffL; > } > > -#endif > - > /* > * Calculate the crc32 checksum triggering the watchdog every 'chunk_sz' bytes > * of input. > -- > 1.6.4.4 > _________________________________________________________________ MSN????????????????25???????????2010????????? http://kaba.msn.com.cn/?k=1