This is a potentially good pointer to where someone can take this.
While startup was working, BSP now explodes once the AP stops, while
BSP is doing startup IPI loop send #2. The code needs to be hardened; I
think use of the shared variables would really make it much more solid.
This would be a good undergrad student project if someone is looking for one.
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://coreboot.org/repository/coreboot-v3@1145 f3766cd6-281f-0410-b1cd-43a5c92072e9
debugging in, using locations 0 and _secondary_start as POST.
Calling from initram did not work out, as we have to disable_car in initram
to make such a call work (on core2). For now,
I am calling this from stage1_phase 3, before stage2 is called. But that
has increased the code size of stage1, which is not a great idea.
What I am thinking we ought to do: call this from stage2, before phase 1,
so that CPUs are nice and set up and quiet.
Provide phase2 with an SMP-safe printk.
This is here so others may see it and correct my work. The good news is
that SMP startup on core2 on v3 is now starting to go. But the better news
is that the way this is working is pretty generic and ought to apply to
much more than just core2.
To really look at object you might want to get ndisasm.
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>
git-svn-id: svn://coreboot.org/repository/coreboot-v3@1143 f3766cd6-281f-0410-b1cd-43a5c92072e9
people can suggest what's wrong.
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>
git-svn-id: svn://coreboot.org/repository/coreboot-v3@1139 f3766cd6-281f-0410-b1cd-43a5c92072e9
I can still get to linux but core1 is not working.
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>
git-svn-id: svn://coreboot.org/repository/coreboot-v3@1137 f3766cd6-281f-0410-b1cd-43a5c92072e9
adaption of the v2 code, with significant cleanup and
simplification. It also works in CAR mode, and has no .bss or .data
usage. It provides for a way to provide AP POST codes to the BSP.
Since one common file with amd changed (lapic.h) I have build-tested this
against serengeti and it is fine.
It builds and I'll be testing it as soon as I can find the power supply for
the kontron (it got "borrowed").
Index: arch/x86/intel/core2/init_cpus.c
new file. Basically an adaptation of the v2 code to v3. All global variables
removed. One big change to note: there is a stack struct, and the
parameters to the secondary_start are struct members. Thus the BSP
can watch the AP, and, neater, the AP can POST to a shared variable
and the BSP can see how far it got.
Index: arch/x86/secondary.S
.S startup for AP.
Index: arch/x86/Kconfig
Delete a dependency.
Index: northbridge/intel/i945/reset_test.c
Add real cold boot detection.
Index: mainboard/kontron/986lcd-m/Makefile
Add some new build files.
Index: mainboard/kontron/986lcd-m/stage1.c
Get rid of ' in #warning that confused some tool.
Index: mainboard/kontron/986lcd-m/initram.c
Call init_cpus.
Index: mainboard/kontron/Kconfig
Turn off SMM for now.
Index: include/arch/x86/lapic.h
Correct a static inline declaration.
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://coreboot.org/repository/coreboot-v3@1136 f3766cd6-281f-0410-b1cd-43a5c92072e9
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>
git-svn-id: svn://coreboot.org/repository/coreboot-v3@1134 f3766cd6-281f-0410-b1cd-43a5c92072e9
