linux.git/arch/ppc/boot, branch v2.6.15

[PATCH] ppc32: fix treeboot image entrypoint

2005-12-01T23:48:56+00:00

Correctly specify treeboot based image entrypoint.  Currently makefile uses
$(ENTRYPOINT) which isn't defined anywhere.  Each board port sets
entrypoint-$(CONFIG_BOARD_NAME) instead.

Without this patch I cannot boot Ocotea (PPC440GX eval board) anymore.  I
was getting random "OS panic" errors from OpenBIOS for a while, but with
current kernel I get them all the time (probably because image became
bigger).

Signed-off-by: Eugene Surovegin 
Acked-by: Tom Rini 
Cc: Matt Porter 
Cc: Benjamin Herrenschmidt 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] powerpc: Consolidate asm compatibility macros

2005-11-10T02:10:38+00:00

This patch consolidates macros used to generate assembly for
compatibility across different CPUs or configs.  A new header,
asm-powerpc/asm-compat.h contains the main compatibility macros.  It
uses some preprocessor magic to make the macros suitable both for use
in .S files, and in inline asm in .c files.  Headers (bitops.h,
uaccess.h, atomic.h, bug.h) which had their own such compatibility
macros are changed to use asm-compat.h.

ppc_asm.h is now for use in .S files *only*, and a #error enforces
that.  As such, we're a lot more careless about namespace pollution
here than in asm-compat.h.

While we're at it, this patch adds a call to the PPC405_ERR77 macro in
futex.h which should have had it already, but didn't.

Built and booted on pSeries, Maple and iSeries (ARCH=powerpc).  Built
for 32-bit powermac (ARCH=powerpc) and Walnut (ARCH=ppc).

Signed-off-by: David Gibson 
Signed-off-by: Paul Mackerras

ppc/powerpc: workarounds for old Open Firmware versions

2005-11-10T01:00:55+00:00

This adds code to work around some problems with old versions of
Open Firmware, such as on the early powermacs (7500 etc.) and the
"Longtrail" CHRP machine.  On these machines we have to claim
the physical and virtual address ranges explicitly when claiming
memory and then set up a V->P mapping.

The Longtrail has more problems: setprop doesn't work, and we have
to set an "allow-reclaim" variable to 0 in order to get claim on
physical memory ranges to fail if the memory is already claimed.

Signed-off-by: Paul Mackerras

[PATCH] ppc32: cleanup AMCC PPC40x eval boards to support U-Boot

2005-11-07T15:53:26+00:00

Cleanup PPC40x eval boards (bubinga, walnut and sycamore) to support U-Boot
as bootloader.  The OpenBIOS bd_info struct is not used in the kernel
anymore (only U-Boot now).

uImage (U-Boot) tested on walnut, sycamore and bubinga
zImage (OpenBIOS) tested on sycamore, bubinga and ebony

Signed-off-by: Stefan Roese 
Signed-off-by: Matt Porter 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] ppc32: Add Yucca (440SPe eval board) platform

2005-11-07T15:53:26+00:00

Add support for AMCC PowerPC 440SPe "Yucca" eval board platform.

Signed-off-by: Roland Dreier 
Cc: Matt Porter 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

powerpc: Fixes to get the Longtrail CHRP a bit further

2005-10-26T11:52:53+00:00

Talk about buggy firmware...  the OF on the Longtrail returns 0
from the claim client service rather than -1 when the claim fails.
It also has no device_type on the /memory node and blows up if
the output buffer for package-to-path is too big.

This also fixes a bug with calling alloc_up with align == 0, where
we did _ALIGN_UP(alloc_bottom, 0) which will end up as 0.

Lastly, we now check the return value (in r3) from calling the
prom, and return -1 from call_prom if we get a negative value back.
That is supposed to indicate that the requested client service
doesn't exist.

Signed-off-by: Paul Mackerras

powerpc: Make coff boot wrapper load the kernel at 8M

2005-10-23T07:26:32+00:00

Previously it claimed 7MB starting at the 9M point and loaded the
kernel there.  That meant that prom_init put the flattened device
tree above 16M.  On the 601 that caused the early device tree scan
to fail, since only 16MB are mapped with BATs on the 601.  Moving
this down to 8MB allows prom_init to put the flattened device tree
between 15M and 16M, so it works on the 601.

Signed-off-by: Paul Mackerras

[PATCH] ppc32 ld.script fix for building on ppc64

2005-09-29T15:46:27+00:00

In arch/ppc/boot/ld.script we need OUTPUT_ARCH(powerpc:common) for the
same reasons why we need it in vmlinux.lds.S; when we build on ppc64
box, we need to be explicit about the target.

See http://linus.bkbits.net:8080/linux-2.5/cset@1.1784.8.10 for the
corresponding fix in vmlinux.lds.S.

Signed-off-by: Al Viro 
Signed-off-by: Linus Torvalds

[PATCH] ppc32: In the boot code, don't rely on BASE_BAUD directly

2005-09-09T20:57:29+00:00

Modifies serial_init to get base baud rate from the rs_table entry instead
of BAUD_BASE.  This patch eliminates duplication between the
SERIAL_PORT_DFNS macro and BAUD_BASE.  Without the patch, if a port set the
baud rate in SERIAL_PORT_DFNS, but did not update BASE_BAUD, the BASE_BAUD
value would still be used.

Signed-off-by: Grant Likely 
Signed-off-by: Tom Rini 
Cc: Russell King 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] ppc32: Correct an instruction in the boot code

2005-09-09T20:57:29+00:00

In the flush and invalidate bootcode on PPC4xx we were accidentally using
the wrong instruction.  Use cmplw, which reads from a register like we
want.

Signed-off-by: Tom Rini 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds