The client stack was set up 96 * 64 KiB below the hash table.
Should be 96 KiB instead.
v2:
* Initial.
Cc: Alexander Graf <agraf@suse.de>
Signed-off-by: Andreas Färber <andreas.faerber@web.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
git-svn-id: svn://coreboot.org/openbios/trunk/openbios-devel@908 f158a5a8-5612-0410-a976-696ce0be7e32
The exception stack was always set up 64 KiB below the ROM,
ignoring hash table alignment.
Align the stack pointer appropriately.
v2:
* Drop buggy distinction based on PVR value since the previous patch
unifies alignment. Suggested by Segher Boessenkool.
Cc: Alexander Graf <agraf@suse.de>
Cc: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Andreas Färber <andreas.faerber@web.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
git-svn-id: svn://coreboot.org/openbios/trunk/openbios-devel@907 f158a5a8-5612-0410-a976-696ce0be7e32
ofmem was fixed at 0x05400000, followed by the malloc zone. The latter was
bounded by the stack (now client stack), relative to the top of RAM.
An increase of RAM would therefore only enlarge the malloc zone.
Move the malloc zone below the client stack, with a fixed size of 2 MiB.
The size is derived from the memory map depicted in ofmem.c;
having a fixed size leaves room for memory claim'ed by clients
and by OpenBIOS.
v2:
* Through the preceding patch the malloc zone goes below the client stack
rather than below the stack. Adjust and prettify the illustration.
Cc: Alexander Graf <agraf@suse.de>
Signed-off-by: Andreas Färber <andreas.faerber@web.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
git-svn-id: svn://coreboot.org/openbios/trunk/openbios-devel@905 f158a5a8-5612-0410-a976-696ce0be7e32
Replace uchar, uint, ulong, u_char, u_int, u_long, u_int* with
their standard equivalents.
Fixes warnings like these on OpenBSD:
CC target/arch/unix/unix.o
In file included from ../arch/unix/unix.c:29:
../include/config.h:26: warning: redefinition of `ulong'
/usr/include/sys/types.h:56: warning: `ulong' previously declared here
../include/config.h:26: warning: redundant redeclaration of `ulong' in same scope
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
git-svn-id: svn://coreboot.org/openbios/trunk/openbios-devel@830 f158a5a8-5612-0410-a976-696ce0be7e32
PPC64: Switch to 32-bit mode in interrupts
All the code in OpenBIOS runs in 32 bits, which is fine. Now, when
an interrupt arrives, the 970 CPU automatically sets the MSR_SF bit,
making us run in 64 bit mode.
That breaks address calculation, because 'lis' and 'ba' get sign
extended.
In order to circumvent that mess, let's just go back to 32 bit mode
whenever we get an interrupt.
Signed-off-by: Alexander Graf <alex@csgraf.de>
Signed-off-by: Laurent Vivier <Laurent@vivier.eu>
git-svn-id: svn://coreboot.org/openbios/openbios-devel@464 f158a5a8-5612-0410-a976-696ce0be7e32
While booting a 64bit kernel, there is a small timeframe where OF and the kernel communicate with each other. Within that timeframe, DSI/ISI interrupts may occur, because some memory is not mapped yet.
Right now in case that happens, we jump into the DSI/ISI interrupt handler which clobbers the high 32 bits of the kernel's registers. In order to circumvent that, let's save/restore all 64 bits of all kernel registers when we get a DSI/ISI interrupt.
This patch enables a PPC64 Linux kernel to boot up to the point where it tries to set up the SLB entries (slbmte), which is not yet implemented in qemu.
v2 implements handling for the HIOR register, bringing interrupt handlers to RAM.
Signed-off-by: Alexander Graf <alex@csgraf.de>
git-svn-id: svn://coreboot.org/openbios/openbios-devel@462 f158a5a8-5612-0410-a976-696ce0be7e32
"PowerPC Processor binding to:
IEEE 1275-1994, Standard for Boot (Initialization, Configuration) Firmware
Revision: 2.1 (Approved Version), November 6, 1996"
7.1 Calling Convention:
Client interface preserves: msr, cr, r1, r2, r13-r31, sprg0-3, fpscr, f0-f31,
sr0-sr15, other SPRs.
This patch modifies of_client_callback(), to preserve r1, r2, r4-r31.
This is needed to be able to execute the first stage of quik which
supposes r7 is unmodified.
git-svn-id: svn://coreboot.org/openbios/openbios-devel@384 f158a5a8-5612-0410-a976-696ce0be7e32
Move non-vector code to higher memory addresses to free vector area.
Rename entry point _start to _entry so that it will not conflict with
ldscript _start.
git-svn-id: svn://coreboot.org/openbios/openbios-devel@348 f158a5a8-5612-0410-a976-696ce0be7e32
This patches copies all needed ppc files to qemu and modifies them.
The generated OpenBIOS image must be loaded at adresse 0xfff00000 by Qemu.
It is able to load Yaboot from disk and Yaboot is able to load Linux, but Linux hangs somewhere... of course it needs more work (but this cleans up my patch queue).
Thank you to Blue Swirl and Aurelien Jarno for their help.
Signed-off-by: Laurent Vivier <Laurent@lvivier.info>
git-svn-id: svn://coreboot.org/openbios/openbios-devel@301 f158a5a8-5612-0410-a976-696ce0be7e32
