M-Systems Flash Disk Pioneers 91-SR-005-10-7L Benutzerhandbuch

 

Using the DiskOnChip with Linux OS 

91-SR-005-10-7L REV. 2.0 

23 

There are two ways to integrate the TrueFFS driver into the kernel: manually or with a patch utility.  

The TrueFFS driver for kernel versions 2.0.## contains patch files for kernel versions 2.0.29-2.0.35 
(/tmp/doc-driver/doc-patch-2.0.##). See paragraph 4.2.1 for detailed information on 
how to patch your kernel with these patch files. 

When using the TrueFFS driver for kernel versions 2.2.##, the kernel needs to be patched manually. For 
your reference, the driver contains an example patch file (/tmp/doc-driver/doc-patch-
example

). This appendix explains how to patch the kernel manually. 

To patch your kernel manually, go to your local kernel sources: 

# cd /usr/src/linux

 

There are 5 files that you will need to patch: 

/usr/src/linux/include/linux/blk.h

 

/usr/src/linux/include/linux/major.h 

/usr/src/linux/drivers/block/Makefile 

/usr/src/linux/drivers/block/Config.in 

/usr/src/linux/drivers/block/ll_rw_blk.c 

Review the example patch file (/tmp/doc-driver/doc-patch-example) provided with the 
TrueFFS driver (driver.tgz). The file will look something like this. 

--- include/linux/major.h 

Tue Aug 12 23:57:23 1997

 

+++ /tmp/package/usr/src/linux/include/linux/major.h  Mon Aug 
17 14:05:19 1998 

@@ -69,6 +69,8 @@ 

 #define APBLOCK_MAJOR   60   /* AP1000 Block device */ 

 #define DDV_MAJOR       61   /* AP1000 DDV block device */ 

+#define IGEL_FLASH_MAJOR 62 /* tom@igel.de 2.6.98 */ 

+ 

#define SPECIALIX_NORMAL_MAJOR 75 

#define SPECIALIX_CALLOUT_MAJOR 76 

Each of the above mentioned files needs to be edited to create the correct patch for your kernel.