We had a static memory_limit in prom.c, and then another one defined
in setup_64.c and used in numa.c, which resulted in the kernel crashing
when mem=xxx was given on the command line. This puts the declaration
in system.h and the definition in mem.c. This also moves the
definition of tce_alloc_start/end out of setup_64.c.
Signed-off-by: Paul Mackerras <paulus@samba.org>
This fixes a bug where settimeofday would set the wrong parameters
in do_gtod, resulting in gettimeofday returning a value about 4
hours after the correct time. The bug was that we divided a
negative 64-bit value with do_div, which treated it as unsigned
and gave us a result that was approximately 1.8e10 too large
(since the divisor was 1e9).
Signed-off-by: Paul Mackerras <paulus@samba.org>
Somehow we ended up with an #ifdef CONFIG_PPC64 around the export
of cur_cpu_spec, but raid6 as a module needs it on ppc32 as well
as ppc64.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Currently when we first select memory model (FLAT, DISCONTIG, SPARSE) then
select whether the machine is NUMA. However NUMA systems may not be FLAT.
This constraint it not honoured and we may configure a NUMA/FLAT system.
Reorder the configuration such that we choose NUMA first which allows us to
only list the memory models which are valid. We now default NUMA for known
NUMA systems. Note that this new order also matches that used in x86.
Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Joel Schopp <jschopp@austin.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
remove duplicate local variable, saves 2 asm instructions.
Signed-off-by: Olaf Hering <olh@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Add proper entry to support the Marvell MV64361 (Marvell Discovery II)
SRAM.
This feature may be used by the mv643xx_eth driver.
Signed-off-by: Nicolas DET <det.nicolas@free.fr>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This implements a nvram acccess method, similar to
arch/ppc64/kernel/pSeries_nvram.c tested on CHRP B50.
Signed-off-by: Olaf Hering <olh@suse.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Change the phys_mem_access_prot() function to take a pfn instead of an
address. This allows mmap64() to work on /dev/mem for addresses above 4G
on 32-bit architectures. We start with a pfn in mmap_mem(), so there's no
need to convert to an address; in fact, it's actively bad, since the
conversion can overflow when the address is above 4G.
Similarly fix the ppc32 page_is_ram() function to avoid a conversion to an
address by directly comparing to max_pfn. Working with max_pfn instead of
high_memory fixes page_is_ram() to give the right answer for highmem pages.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Cc: Anton Blanchard <anton@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
The merged version follows the ppc64 version pretty closely mostly,
and in fact ARCH=ppc64 now uses the arch/powerpc/xmon version.
The main difference for ppc64 is that the 'p' command to call
show_state (which was always pretty dodgy) has been replaced by
the ppc32 'p' command, which calls a given procedure (so in fact
the old 'p' command behaviour can be achieved with 'p $show_state').
Signed-off-by: Paul Mackerras <paulus@samba.org>
The sc instruction emulation can't be done the same way on 32-bit
as 64-bit yet, but this should work OK.
Signed-off-by: Paul Mackerras <paulus@samba.org>
This patch moves the XICS interrupt controller code into the
platforms/pseries directory, since it only appears on pSeries
machines. If it ever appears on some other machine we can move it to
sysdev, although xics.c itself will need a bunch of changes in that
case to remove pSeries specific assumptions.
Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This allows us to also use entry_64.S from the merged tree and reverts
the setup_64.c part of fda262b897.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Since I sent the patch to purge bootinfo.h from ARCH=powerpc and
ARCH=ppc64, setup-common.c has come into existence, and another
#include of bootinfo.h slipped in. This patch removes it. It also
removes include/asm-ppc64/bootinfo.h, which somehow survived the
previous patch which was supposed to remove it.
Signed-off-by: Paul Mackerras <paulus@samba.org>
For the current time idle_6xx only applies to 6xx ppc32 CPUs
Signed-off-by: Kumar K. Gala <kumar.gala@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
On 32-bit platforms, these convert from kernel virtual addresses
to real (physical addresses), like tophys/tovirt but they use
the same register for the source and destination. On 64-bit
platforms, they do nothing because the hardware ignores the top
two bits of the address in real mode.
These new macros are used in fpu.S now.
Signed-off-by: Paul Mackerras <paulus@samba.org>
