Created a new directory called bsp (board support package) to hold
board or system on chip specific code. The idea is the following.
Change-Id: Ica5886806940facae2fa5492fcc938b3c2b989be
On startup determine the board_id based on the board name
passed from u-boot. This code also export "board" for use
by userland using sysenv.
Change-Id: I1064a49497c82b06f50d98650132bc0a7f543568
Put the boot arguments in uEnv.txt and not in cmdline.txt to allow
a more dynamic configuration of the system. We now also pass the
u-boot board_name parameter to the kernel.
Export the board variable to userland using sysenv. This
allows rc-scrips to perform device specific initialisation.
The board variable follows the following pattern
[ARCH]-[ARCHVARIANT]-[VENDOR]-[BOARD]-[BOARDVARIANT]
We currently we support the following boards:
X86-I586-GENERIC-GENERIC-GENERIC
ARM-ARMV7-TI-BBXM-GENERIC
ARM-ARMV7-TI-BB-WHITE
ARM-ARMV7-TI-BB-BLACK
Change-Id: I9e5f5f24f9a71cc9797cacb1aafb19499613f0be
kernel:
. modules can be as big as the space (8MB) between them
instead of 4MB; memory is slightly bigger with DBG=-g
arm ucontext:
. r4 is clobbered by the restore function, as it's
used as a scratch register, causing problems for the
DBG=-g build
. r1-r3 are safe for scratch registers, as they are
caller-save, so use r3 instead; and don't bother
restoring r1-r3, but preserve r4
vfs:
. improve TLL pointer sanity check a bit
Change-Id: I0e3cfc367fdc14477e40d04b5e044f288ca4cc7d
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
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
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.
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
. 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
. 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
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)
