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https://github.com/linux-sunxi/sunxi-tools.git
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nand-part: create one nand-part program to handle both A10 and A20
Build one nand-part program to handle both A10 and A20 mbr header formats. Changed -f option to take an "a10" or "a20" argument to specify which mbr format to force. Signed-off-by: Patrick Wood <patrickhwood@gmail.com>
This commit is contained in:
Patrick Wood
Henrik Nordstrom
parent
c0f39a2417
commit
5d0ee5037b
11
Makefile
11
Makefile
@ -4,7 +4,7 @@ CFLAGS += -std=c99 -D_POSIX_C_SOURCE=200112L
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CFLAGS += -Iinclude/
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TOOLS = fexc bin2fex fex2bin bootinfo fel pio
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TOOLS += nand-part nand-part-a20
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TOOLS += nand-part
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MISC_TOOLS = phoenix_info
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@ -37,12 +37,15 @@ LIBUSB_LIBS = `pkg-config --libs $(LIBUSB)`
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fel: fel.c
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$(CC) $(CFLAGS) $(LIBUSB_CFLAGS) $(LDFLAGS) -o $@ $(filter %.c,$^) $(LIBS) $(LIBUSB_LIBS)
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nand-part: nand-part-main.c nand-part.c nand-part-a10.h nand-part-a20.h
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$(CC) $(CFLAGS) -c -o nand-part-main.o nand-part-main.c
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$(CC) $(CFLAGS) -c -o nand-part-a10.o nand-part.c -D A10
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$(CC) $(CFLAGS) -c -o nand-part-a20.o nand-part.c -D A20
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$(CC) $(LDFLAGS) -o $@ nand-part-main.o nand-part-a10.o nand-part-a20.o $(LIBS)
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%: %.c
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$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(filter %.c,$^) $(LIBS)
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nand-part-a20: nand-part.c nand-part-a20.h
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$(CC) $(CFLAGS) $(LDFLAGS) -o $@ nand-part.c -D A20 $(LIBS)
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fel-pio.bin: fel-pio.elf fel-pio.nm
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$(CROSS_COMPILE)objcopy -O binary fel-pio.elf fel-pio.bin
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8
nand-common.h
Normal file
8
nand-common.h
Normal file
@ -0,0 +1,8 @@
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#include "types.h"
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extern int nand_part_a10 (int argc, char **argv, const char *cmd, int fd, int force);
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extern int nand_part_a20 (int argc, char **argv, const char *cmd, int fd, int force);
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extern int checkmbrs_a10 (int fd);
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extern int checkmbrs_a20 (int fd);
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extern void usage (const char *cmd);
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extern __u32 calc_crc32(void * buffer, __u32 length);
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@ -27,6 +27,8 @@
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#define MBR_MAGIC "softw311"
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#define MBR_VERSION 0x100
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#define nand_part nand_part_a10
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#define checkmbrs checkmbrs_a10
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#define MAX_PART_COUNT 15 //max part count
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#define MBR_COPY_NUM 4 //mbr backup count
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@ -27,6 +27,8 @@
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#define MBR_MAGIC "softw411"
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#define MBR_VERSION 0x200
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#define nand_part nand_part_a20
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#define checkmbrs checkmbrs_a20
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#define MAX_PART_COUNT 120 //max part count
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#define MBR_COPY_NUM 4 //mbr backup count
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115
nand-part-main.c
Normal file
115
nand-part-main.c
Normal file
@ -0,0 +1,115 @@
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/*
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* mbr.c
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* (C) Copyright 2012
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* Patrick H Wood, All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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*/
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#include <stdio.h>
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#include <string.h>
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#include <strings.h>
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#include <fcntl.h>
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#include "nand-common.h"
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void usage(const char *cmd)
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{
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printf("usage: %s nand-device 'name2 len2 [usertype2]' ['name3 len3 [usertype3]'] ...\n", cmd);
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printf("or %s nand-device [-f] start1 'name1 len1 [usertype1]' ['name2 len2 [usertype2]'] ...\n", cmd);
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}
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typedef struct tag_CRC32_DATA
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{
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__u32 CRC; //int的大小是32位
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__u32 CRC_32_Tbl[256]; //用来保存码表
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}CRC32_DATA_t;
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__u32 calc_crc32(void * buffer, __u32 length)
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{
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__u32 i, j;
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CRC32_DATA_t crc32; //
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__u32 CRC32 = 0xffffffff; //设置初始值
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crc32.CRC = 0;
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for( i = 0; i < 256; ++i)//用++i以提高效率
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{
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crc32.CRC = i;
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for( j = 0; j < 8 ; ++j)
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{
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//这个循环实际上就是用"计算法"来求取CRC的校验码
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if(crc32.CRC & 1)
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crc32.CRC = (crc32.CRC >> 1) ^ 0xEDB88320;
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else //0xEDB88320就是CRC-32多项表达式的值
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crc32.CRC >>= 1;
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}
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crc32.CRC_32_Tbl[i] = crc32.CRC;
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}
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CRC32 = 0xffffffff; //设置初始值
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for( i = 0; i < length; ++i)
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{
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CRC32 = crc32.CRC_32_Tbl[(CRC32^((unsigned char*)buffer)[i]) & 0xff] ^ (CRC32>>8);
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}
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//return CRC32;
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return CRC32^0xffffffff;
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}
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int main (int argc, char **argv)
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{
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char *nand = "/dev/nand";
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const char *cmd = argv[0];
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int fd;
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int force = 0; // force write even if magics and CRCs don't match
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argc--;
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argv++;
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if (argc > 1) {
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if (!strcmp(argv[0], "-f")) {
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if (!strcasecmp(argv[1], "a10"))
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force = 10;
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else if (!strcasecmp(argv[1], "a20"))
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force = 20;
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else {
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usage(cmd);
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return -1;
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}
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argc -= 2;
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argv += 2;
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}
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}
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if (argc > 0) {
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nand = argv[0];
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argc--;
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argv++;
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}
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fd = open(nand, O_RDWR);
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if (fd < 0) {
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usage(cmd);
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return -2;
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}
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if (force == 10)
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return nand_part_a10 (argc, argv, cmd, fd, force);
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if (force == 20)
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return nand_part_a20 (argc, argv, cmd, fd, force);
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if (checkmbrs_a10(fd))
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return nand_part_a10 (argc, argv, cmd, fd, force);
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if (checkmbrs_a20(fd))
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return nand_part_a20 (argc, argv, cmd, fd, force);
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}
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91
nand-part.c
91
nand-part.c
@ -52,10 +52,13 @@
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#include <string.h>
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#include <sys/ioctl.h>
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#include <sys/mount.h> /* BLKRRPART */
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#ifdef A20
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#include "nand-common.h"
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// so far, only known formats are for A10 and A20
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#if defined(A10)
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# include "nand-part-a10.h"
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#elif defined(A20)
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# include "nand-part-a20.h"
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#else
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# include "nand-part.h"
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#endif
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#define MAX_NAME 16
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@ -65,43 +68,7 @@ static void printmbrheader(MBR *mbr)
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printf("mbr: version 0x%08x, magic %8.8s\n", mbr->version, mbr->magic);
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}
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typedef struct tag_CRC32_DATA
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{
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__u32 CRC; //int的大小是32位
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__u32 CRC_32_Tbl[256]; //用来保存码表
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}CRC32_DATA_t;
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__u32 calc_crc32(void * buffer, __u32 length)
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{
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__u32 i, j;
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CRC32_DATA_t crc32; //
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__u32 CRC32 = 0xffffffff; //设置初始值
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crc32.CRC = 0;
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for( i = 0; i < 256; ++i)//用++i以提高效率
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{
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crc32.CRC = i;
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for( j = 0; j < 8 ; ++j)
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{
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//这个循环实际上就是用"计算法"来求取CRC的校验码
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if(crc32.CRC & 1)
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crc32.CRC = (crc32.CRC >> 1) ^ 0xEDB88320;
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else //0xEDB88320就是CRC-32多项表达式的值
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crc32.CRC >>= 1;
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}
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crc32.CRC_32_Tbl[i] = crc32.CRC;
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}
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CRC32 = 0xffffffff; //设置初始值
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for( i = 0; i < length; ++i)
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{
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CRC32 = crc32.CRC_32_Tbl[(CRC32^((unsigned char*)buffer)[i]) & 0xff] ^ (CRC32>>8);
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}
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//return CRC32;
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return CRC32^0xffffffff;
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}
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MBR *_get_mbr(int fd, int mbr_num, int force)
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static MBR *_get_mbr(int fd, int mbr_num, int force)
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{
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MBR *mbr;
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@ -145,7 +112,7 @@ MBR *_get_mbr(int fd, int mbr_num, int force)
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return NULL;
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}
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__s32 _free_mbr(MBR *mbr)
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static __s32 _free_mbr(MBR *mbr)
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{
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if(mbr)
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{
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@ -156,7 +123,7 @@ __s32 _free_mbr(MBR *mbr)
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return 0;
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}
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void printmbr(MBR *mbr)
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static void printmbr(MBR *mbr)
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{
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unsigned int part_cnt;
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@ -173,7 +140,7 @@ void printmbr(MBR *mbr)
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mbr->array[part_cnt].user_type);
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}
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}
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void checkmbrs(int fd)
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int checkmbrs(int fd)
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{
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int i;
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MBR *mbrs[MBR_COPY_NUM];
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@ -191,7 +158,7 @@ void checkmbrs(int fd)
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if (mbrs[i])
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_free_mbr(mbrs[i]);
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}
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return;
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return 0;
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}
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printmbr(mbr);
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@ -199,9 +166,10 @@ void checkmbrs(int fd)
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if (mbrs[i])
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_free_mbr(mbrs[i]);
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}
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return 1;
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}
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int writembrs(int fd, char names[][MAX_NAME], __u32 start, __u32 *lens, unsigned int *user_types, int nparts, int partoffset, int force)
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static int writembrs(int fd, char names[][MAX_NAME], __u32 start, __u32 *lens, unsigned int *user_types, int nparts, int partoffset, int force)
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{
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unsigned int part_cnt = 0;
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int i;
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@ -287,46 +255,15 @@ int writembrs(int fd, char names[][MAX_NAME], __u32 start, __u32 *lens, unsigned
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return 1;
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}
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void usage(const char *cmd)
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int nand_part (int argc, char **argv, const char *cmd, int fd, int force)
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{
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printf("usage: %s nand-device 'name2 len2 [usertype2]' ['name3 len3 [usertype3]'] ...\n", cmd);
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printf("or %s nand-device [-f] start1 'name1 len1 [usertype1]' ['name2 len2 [usertype2]'] ...\n", cmd);
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}
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int main (int argc, char **argv)
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{
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int fd;
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int force = 0; // force write even if magics and CRCs don't match
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int partoffset = 0;
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int i;
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char *nand = "/dev/nand";
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char *cmd = argv[0];
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char names[MAX_PART_COUNT][MAX_NAME];
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__u32 lens[MAX_PART_COUNT];
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unsigned int user_types[MAX_PART_COUNT];
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__u32 start;
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argc--;
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argv++;
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if (argc > 0) {
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if (!strcmp(argv[0], "-f")) {
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force++;
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argc--;
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argv++;
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}
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}
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if (argc > 0) {
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nand = argv[0];
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argc--;
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argv++;
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}
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fd = open(nand, O_RDWR);
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if (fd < 0) {
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usage(cmd);
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return -1;
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}
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// parse name/len arguments
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memset((void *) user_types, 0, sizeof(user_types));
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