PATCH: Select root device

[Richard Wallman <richard@wallman.org.uk>]

Okay, for those with the luxury of having two floppy drives or a hard
disk, here's a patch that will let you select the root device during
kernel configuration.



Here's the output of 'cvs diff': (mind email client wrap)

Index: Documentation/Configure.help
===================================================================
RCS file: /cvsroot/elks/elks/Documentation/Configure.help,v
retrieving revision 1.40
diff -r1.40 Configure.help
588a589,610
> # Root device select
> # ~~~~~~~~~~~~~~~~~~
>
> Selecting the root filesystem device
> CONFIG_ROOTDEV_FD0
>   Once the kernel has loaded, it will look for the root filesystem to
>   boot the rest of the system (drivers, shells, etc.)
>   You have the following options:
>
>   /dev/fd0
>   The first floppy drive. If the kernel has been loaded from that drive,
>   the drive is empty, or the disk in the drive doesn't contain a MINIX
>   filesystem, the kernel will wait and prompt you to insert a root disk.
>
>   /dev/fd1
>   Once the kernel has loaded, it will look for the root filesystem on
>   the second floppy drive.
>
>   /dev/bda1
>   Once the kernel has loaded, it will look for the root filesystem on
>   the first primary partition of the first hard disk.
>
Index: arch/i86/boot/bootsect.S
===================================================================
RCS file: /cvsroot/elks/elks/arch/i86/boot/bootsect.S,v
retrieving revision 1.4
diff -r1.4 bootsect.S
45c45
< ROOT_DEV = 0
---
> ! ROOT_DEV = 0
529c529
<       .word ROOT_DEV
---
>       .word ROOTDEV
Index: arch/i86/drivers/block/Config.in
===================================================================
RCS file: /cvsroot/elks/elks/arch/i86/drivers/block/Config.in,v
retrieving revision 1.10
diff -r1.10 Config.in
54a55,60
>
>       comment 'Root location'
>       choice 'is the root device' \
>               "/dev/fd0       CONFIG_ROOTDEV_FD0      \
>                /dev/fd1        CONFIG_ROOTDEV_FD1     \
>                /dev/bda1       CONFIG_ROOTDEV_BDA1" /dev/fd0
Index: arch/i86/tools/build.c
===================================================================
RCS file: /cvsroot/elks/elks/arch/i86/tools/build.c,v
retrieving revision 1.9
diff -r1.9 build.c
147a148,151
> #if ROOTDEV
>         major_root = ROOTDEV >> 8;
>         minor_root = ROOTDEV & 0xff;
> #else
149a154
> #endif
151c156
<     fprintf(stderr, "Root device is (%d, %d)\n", major_root, minor_root);
---
>     fprintf(stderr, "Root device is (%d, %hhu)\n", major_root,
minor_root);
Index: include/linuxmt/config.h
===================================================================
RCS file: /cvsroot/elks/elks/include/linuxmt/config.h,v
retrieving revision 1.14
diff -r1.14 config.h
9a10,29
> #ifdef CONFIG_ROOTDEV_FD0
> #define ROOTDEV 0x0380
> #endif
>
> #ifdef CONFIG_ROOTDEV_FD1
> #define ROOTDEV 0x03c0
> #endif
>
> #ifdef CONFIG_ROOTDEV_RAM
> #define ROOTDEV 0x0100
> #endif
>
> #ifdef CONFIG_ROOTDEV_BDA1
> #define ROOTDEV 0x0301
> #endif
>
> #ifndef ROOTDEV
> #define ROOTDEV 0x0380
> #endif
>
17a38
> #ifndef CONFIG_ROOTDEV

-- 
Richard Wallman