Commit graph

10 commits

Author SHA1 Message Date
Kees Jongenburger
69dc6a4f15 arm:keep kernel and modules in the first 256MB of memory.
Keep kernel and modules in the first 256MB of memory in preparation
for the beaglebone. That target only has 256 MB of memory.

Change-Id: I3d92247b5d4e5d3aab7388fe01c2f5713d6a4593
2013-05-24 11:17:52 +02:00
Kees Jongenburger
571ea5b4d7 arm:remove hardcoded base address for the in kernel serial.
Removed hardcoded base address for in kernel serial. This will ease
porting to different boards and allow us to remap i/o at later stage.

Change-Id: I4a4e00ed2aa2f94dfe928dc43a6816d3b94576b7
2013-05-24 11:17:52 +02:00
Kees Jongenburger
390f852bd1 arm:cleanup remove special case memory handling.
We used to load the memory driver above the other modules to allow
the memory driver (ramdisk) to grow. We no longer want or need this
this as we have a working mmc driver.
2013-04-12 20:52:57 +02:00
David van Moolenbroek
50e46307de Move MINIX reboot definitions into minix/reboot.h
Also fix a buffer overflow in commands/reboot/sh_wall.c.

Change-Id: I3a61057c4f0221d1700e14d44520b4ad17f1dbe1
2013-03-20 16:50:01 +00:00
Ben Gras
5acaa0814f kernel, ramdisk: some boot unification
To use the new SD building script, Linux has to be configured with
loop.max_part=15 on the command line (or set at module load time)
to make the loopback device see the partitions.

This commit removes a lot of differences between the ARM and x86
boot ramdisk and rc scripts. It changes the ARM build from running
from ramdisk to requiring a full filesystem on the SD image and
booting into it.

	. ramdisk: remove some arm-only utilities only used for running
	  from the shell
	. remove ARM-only rc.arm, proto.arm.small, ttys and mylogin.sh
	  boot-time ramdisk files
	. change kernel to add "arch" variable so userland knows what
	  we're running on from sysenv
	. make ARM use the regular ramdisk rc file, changed to distinguish
	  i386-only and ARM-only drivers; requires rootdevname to be set
	. change /etc/rc and /usr/etc/rc to start i386-only drivers only on
	  i386 systems
	. change the kernel/arm to have a special case for the memory
	  driver to load it higher so it can be bigger
	. add uEnv.txt, cmdline.txt and a for now highly linux-dependent
	  SD preparation script arm_sdimage.sh to the git repository in
	  releasetools/

Change-Id: I68910ba4e96ee80f7a12b65e48b5d39b43ca6397
2013-03-07 14:29:27 +00:00
Ben Gras
3bc6d7df06 impove memory accounting
. the total amount of memory in the system didn't include the memory
	  used by the boot-time modules and some dynamic allocation by the
	  kernel at boot time (to map in VM). especially apparent on our
	  ARM board with 'only' 512MB of memory and a huge ramdisk.
	. also: *add* the VM loaded module to the freelist after it has
	  been allocated for & mapped in instead of cutting it *out* of the
	  freelist! so we get a few more MB free..

Change-Id: If37ac32b21c9d38610830e21421264da4f20bc4f
2013-02-11 19:31:57 +01:00
Ben Gras
5a0585359d ARM divsi3.S: raise(SIGFPE) when called for
. raise(SIGFPE) for modulo-0/divide-0 operations in
	  internal int division functions
	. gcc: do not link with -lgcc anywhere so these internal
	  functions are always used from libc instead of (sometimes)
	  masked by -lgcc
	. together fixes test53 on ARM

Change-Id: I31ec19dfdd68b8a92695595da901874e63106f9d
2013-02-09 22:24:59 +01:00
Thomas Veerman
1a60a84cb7 ARM: clear BSS upon boot 2013-01-25 17:07:01 +00:00
Thomas Veerman
c96cd5e1a0 ARM: provide means to pass boot cmdline 2013-01-25 17:07:01 +00:00
Lionel Sambuc
b1c4ba4ab6 ARM updates
Due to the ABI we are using we have to use the earm architecture
moniker for the build system to behave correctly. This involves
then some headers to move around.

There is also a few related Makefile updates as well as minor
source code corrections.
2013-01-17 10:03:58 +01:00
Renamed from kernel/arch/arm/pre_init.c (Browse further)