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-rw-r--r--fs/yaffs2/yaffscfg.c417
1 files changed, 417 insertions, 0 deletions
diff --git a/fs/yaffs2/yaffscfg.c b/fs/yaffs2/yaffscfg.c
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+++ b/fs/yaffs2/yaffscfg.c
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+/*
+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2007 Aleph One Ltd.
+ * for Toby Churchill Ltd and Brightstar Engineering
+ *
+ * Created by Charles Manning <charles@aleph1.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/*
+ * yaffscfg.c The configuration for the "direct" use of yaffs.
+ *
+ * This file is intended to be modified to your requirements.
+ * There is no need to redistribute this file.
+ */
+
+/* XXX U-BOOT XXX */
+#include <common.h>
+
+#include <config.h>
+#include "nand.h"
+#include "yaffscfg.h"
+#include "yaffsfs.h"
+#include "yaffs_packedtags2.h"
+#include "yaffs_mtdif.h"
+#include "yaffs_mtdif2.h"
+#if 0
+#include <errno.h>
+#else
+#include "malloc.h"
+#endif
+
+unsigned yaffs_traceMask = 0xFFFFFFFF;
+static int yaffs_errno = 0;
+
+void yaffsfs_SetError(int err)
+{
+ //Do whatever to set error
+ yaffs_errno = err;
+}
+
+int yaffsfs_GetError(void)
+{
+ return yaffs_errno;
+}
+
+void yaffsfs_Lock(void)
+{
+}
+
+void yaffsfs_Unlock(void)
+{
+}
+
+__u32 yaffsfs_CurrentTime(void)
+{
+ return 0;
+}
+
+void *yaffs_malloc(size_t size)
+{
+ return malloc(size);
+}
+
+void yaffs_free(void *ptr)
+{
+ free(ptr);
+}
+
+void yaffsfs_LocalInitialisation(void)
+{
+ // Define locking semaphore.
+}
+
+// Configuration for:
+// /ram 2MB ramdisk
+// /boot 2MB boot disk (flash)
+// /flash 14MB flash disk (flash)
+// NB Though /boot and /flash occupy the same physical device they
+// are still disticnt "yaffs_Devices. You may think of these as "partitions"
+// using non-overlapping areas in the same device.
+//
+
+#include "yaffs_ramdisk.h"
+#include "yaffs_flashif.h"
+
+static int isMounted = 0;
+#define MOUNT_POINT "/flash"
+extern nand_info_t nand_info[];
+
+/* XXX U-BOOT XXX */
+#if 0
+static yaffs_Device ramDev;
+static yaffs_Device bootDev;
+static yaffs_Device flashDev;
+#endif
+
+static yaffsfs_DeviceConfiguration yaffsfs_config[] = {
+/* XXX U-BOOT XXX */
+#if 0
+ { "/ram", &ramDev},
+ { "/boot", &bootDev},
+ { "/flash", &flashDev},
+#else
+ { MOUNT_POINT, 0},
+#endif
+ {(void *)0,(void *)0}
+};
+
+
+int yaffs_StartUp(void)
+{
+ struct mtd_info *mtd = &nand_info[0];
+ int yaffsVersion = 2;
+ int nBlocks;
+
+ yaffs_Device *flashDev = calloc(1, sizeof(yaffs_Device));
+ yaffsfs_config[0].dev = flashDev;
+
+ // Stuff to configure YAFFS
+ // Stuff to initialise anything special (eg lock semaphore).
+ yaffsfs_LocalInitialisation();
+
+ // Set up devices
+
+/* XXX U-BOOT XXX */
+#if 0
+ // /ram
+ ramDev.nBytesPerChunk = 512;
+ ramDev.nChunksPerBlock = 32;
+ ramDev.nReservedBlocks = 2; // Set this smaller for RAM
+ ramDev.startBlock = 1; // Can't use block 0
+ ramDev.endBlock = 127; // Last block in 2MB.
+ ramDev.useNANDECC = 1;
+ ramDev.nShortOpCaches = 0; // Disable caching on this device.
+ ramDev.genericDevice = (void *) 0; // Used to identify the device in fstat.
+ ramDev.writeChunkWithTagsToNAND = yramdisk_WriteChunkWithTagsToNAND;
+ ramDev.readChunkWithTagsFromNAND = yramdisk_ReadChunkWithTagsFromNAND;
+ ramDev.eraseBlockInNAND = yramdisk_EraseBlockInNAND;
+ ramDev.initialiseNAND = yramdisk_InitialiseNAND;
+
+ // /boot
+ bootDev.nBytesPerChunk = 612;
+ bootDev.nChunksPerBlock = 32;
+ bootDev.nReservedBlocks = 5;
+ bootDev.startBlock = 1; // Can't use block 0
+ bootDev.endBlock = 127; // Last block in 2MB.
+ bootDev.useNANDECC = 0; // use YAFFS's ECC
+ bootDev.nShortOpCaches = 10; // Use caches
+ bootDev.genericDevice = (void *) 1; // Used to identify the device in fstat.
+ bootDev.writeChunkToNAND = yflash_WriteChunkToNAND;
+ bootDev.readChunkFromNAND = yflash_ReadChunkFromNAND;
+ bootDev.eraseBlockInNAND = yflash_EraseBlockInNAND;
+ bootDev.initialiseNAND = yflash_InitialiseNAND;
+#endif
+
+ // /flash
+ flashDev->nReservedBlocks = 5;
+// flashDev->nShortOpCaches = (options.no_cache) ? 0 : 10;
+ flashDev->nShortOpCaches = 10; // Use caches
+ flashDev->useNANDECC = 0; // do not use YAFFS's ECC
+
+ if (yaffsVersion == 2)
+ {
+ flashDev->writeChunkWithTagsToNAND = nandmtd2_WriteChunkWithTagsToNAND;
+ flashDev->readChunkWithTagsFromNAND = nandmtd2_ReadChunkWithTagsFromNAND;
+ flashDev->markNANDBlockBad = nandmtd2_MarkNANDBlockBad;
+ flashDev->queryNANDBlock = nandmtd2_QueryNANDBlock;
+ flashDev->spareBuffer = YMALLOC(mtd->oobsize);
+ flashDev->isYaffs2 = 1;
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+ flashDev->nDataBytesPerChunk = mtd->writesize;
+ flashDev->nChunksPerBlock = mtd->erasesize / mtd->writesize;
+#else
+ flashDev->nDataBytesPerChunk = mtd->oobblock;
+ flashDev->nChunksPerBlock = mtd->erasesize / mtd->oobblock;
+#endif
+ nBlocks = mtd->size / mtd->erasesize;
+
+ flashDev->nCheckpointReservedBlocks = 10;
+ flashDev->startBlock = 0;
+ flashDev->endBlock = nBlocks - 1;
+ }
+ else
+ {
+ flashDev->writeChunkToNAND = nandmtd_WriteChunkToNAND;
+ flashDev->readChunkFromNAND = nandmtd_ReadChunkFromNAND;
+ flashDev->isYaffs2 = 0;
+ nBlocks = mtd->size / (YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK);
+ flashDev->startBlock = 320;
+ flashDev->endBlock = nBlocks - 1;
+ flashDev->nChunksPerBlock = YAFFS_CHUNKS_PER_BLOCK;
+ flashDev->nDataBytesPerChunk = YAFFS_BYTES_PER_CHUNK;
+ }
+
+ /* ... and common functions */
+ flashDev->eraseBlockInNAND = nandmtd_EraseBlockInNAND;
+ flashDev->initialiseNAND = nandmtd_InitialiseNAND;
+
+ yaffs_initialise(yaffsfs_config);
+
+ return 0;
+}
+
+
+void make_a_file(char *yaffsName,char bval,int sizeOfFile)
+{
+ int outh;
+ int i;
+ unsigned char buffer[100];
+
+ outh = yaffs_open(yaffsName, O_CREAT | O_RDWR | O_TRUNC, S_IREAD | S_IWRITE);
+ if (outh < 0)
+ {
+ printf("Error opening file: %d\n", outh);
+ return;
+ }
+
+ memset(buffer,bval,100);
+
+ do{
+ i = sizeOfFile;
+ if(i > 100) i = 100;
+ sizeOfFile -= i;
+
+ yaffs_write(outh,buffer,i);
+
+ } while (sizeOfFile > 0);
+
+
+ yaffs_close(outh);
+}
+
+void read_a_file(char *fn)
+{
+ int h;
+ int i = 0;
+ unsigned char b;
+
+ h = yaffs_open(fn, O_RDWR,0);
+ if(h<0)
+ {
+ printf("File not found\n");
+ return;
+ }
+
+ while(yaffs_read(h,&b,1)> 0)
+ {
+ printf("%02x ",b);
+ i++;
+ if(i > 32)
+ {
+ printf("\n");
+ i = 0;;
+ }
+ }
+ printf("\n");
+ yaffs_close(h);
+}
+
+void cmd_yaffs_mount(char *mp)
+{
+ yaffs_StartUp();
+ int retval = yaffs_mount(mp);
+ if( retval != -1)
+ isMounted = 1;
+ else
+ printf("Error mounting %s, return value: %d\n", mp, yaffsfs_GetError());
+}
+
+static void checkMount(void)
+{
+ if( !isMounted )
+ {
+ cmd_yaffs_mount(MOUNT_POINT);
+ }
+}
+
+void cmd_yaffs_umount(char *mp)
+{
+ checkMount();
+ if( yaffs_unmount(mp) == -1)
+ printf("Error umounting %s, return value: %d\n", mp, yaffsfs_GetError());
+}
+
+void cmd_yaffs_write_file(char *yaffsName,char bval,int sizeOfFile)
+{
+ checkMount();
+ make_a_file(yaffsName,bval,sizeOfFile);
+}
+
+
+void cmd_yaffs_read_file(char *fn)
+{
+ checkMount();
+ read_a_file(fn);
+}
+
+
+void cmd_yaffs_mread_file(char *fn, char *addr)
+{
+ int h;
+ struct yaffs_stat s;
+
+ checkMount();
+
+ yaffs_stat(fn,&s);
+
+ printf ("Copy %s to 0x%08x... ", fn, addr);
+ h = yaffs_open(fn, O_RDWR,0);
+ if(h<0)
+ {
+ printf("File not found\n");
+ return;
+ }
+
+ yaffs_read(h,addr,(int)s.st_size);
+ printf("\t[DONE]\n");
+
+ yaffs_close(h);
+}
+
+
+void cmd_yaffs_mwrite_file(char *fn, char *addr, int size)
+{
+ int outh;
+
+ checkMount();
+ outh = yaffs_open(fn, O_CREAT | O_RDWR | O_TRUNC, S_IREAD | S_IWRITE);
+ if (outh < 0)
+ {
+ printf("Error opening file: %d\n", outh);
+ }
+
+ yaffs_write(outh,addr,size);
+
+ yaffs_close(outh);
+}
+
+
+void cmd_yaffs_ls(const char *mountpt, int longlist)
+{
+ int i;
+ yaffs_DIR *d;
+ yaffs_dirent *de;
+ struct yaffs_stat stat;
+ char tempstr[255];
+
+ checkMount();
+ d = yaffs_opendir(mountpt);
+
+ if(!d)
+ {
+ printf("opendir failed\n");
+ }
+ else
+ {
+ for(i = 0; (de = yaffs_readdir(d)) != NULL; i++)
+ {
+ if (longlist)
+ {
+ sprintf(tempstr, "%s/%s", mountpt, de->d_name);
+ yaffs_stat(tempstr, &stat);
+ printf("%-25s\t%7d\n",de->d_name, stat.st_size);
+ }
+ else
+ {
+ printf("%s\n",de->d_name);
+ }
+ }
+ }
+}
+
+
+void cmd_yaffs_mkdir(const char *dir)
+{
+ checkMount();
+
+ int retval = yaffs_mkdir(dir, 0);
+
+ if ( retval < 0)
+ printf("yaffs_mkdir returning error: %d\n", retval);
+}
+
+void cmd_yaffs_rmdir(const char *dir)
+{
+ checkMount();
+
+ int retval = yaffs_rmdir(dir);
+
+ if ( retval < 0)
+ printf("yaffs_rmdir returning error: %d\n", retval);
+}
+
+void cmd_yaffs_rm(const char *path)
+{
+ checkMount();
+
+ int retval = yaffs_unlink(path);
+
+ if ( retval < 0)
+ printf("yaffs_unlink returning error: %d\n", retval);
+}
+
+void cmd_yaffs_mv(const char *oldPath, const char *newPath)
+{
+ checkMount();
+
+ int retval = yaffs_rename(newPath, oldPath);
+
+ if ( retval < 0)
+ printf("yaffs_unlink returning error: %d\n", retval);
+}
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