Re: Powerpc build unhappy in 2.6.20.4?

From: Tony Breeds
Date: Wed Apr 04 2007 - 02:59:41 EST

On Mon, Apr 02, 2007 at 11:51:09PM -0400, Rob Landley wrote:

> So "make oldconfig ARCH=powerpc" will accept a config that doesn't have a
> platform selected?

It seems so.

I think the patch below will fix that by forcing at least one platform
to be selected. Can you try it and see if it helps with your current
problem?

> Hmmm... So CONFIG_PPC_MULTIPLATFORM doesn't cover it? ("There is no help
> available for this kernel option"... Maybe a website somewhere?)

CONFIG_PPC_MULTIPLATFORM Allows you to select from the options, but
isn't a valid platform in itself.

> Er, never. I was largely guessing at what I needed via menuconfig. (I'm
> trying to get something I can boot to a shell prompt under QEMU.)

Ahh.

> I'll try this CHRP thing...

Perhaps starting with make chrp32_defconfig would be a reasonable
starting point?

---
arch/powerpc/Kconfig | 21 +++++++++++++++++++++
1 files changed, 21 insertions(+), 0 deletions(-)

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index d6abe49..f3f0628 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -360,6 +360,14 @@ endmenu

source "init/Kconfig"

+config PPC_PLATFORM_CHOSEN
+ def_bool n
+
+config PPC_DEFAULT_PLATFORM
+ def_bool PPC_MULTIPLATFORM && !PPC_PLATFORM_CHOSEN
+ select PPC_CHRP if PPC32
+ select PPC_PSERIES if PPC64
+
menu "Platform support"
depends on PPC64 || CLASSIC32

@@ -406,12 +414,15 @@ config PPC_PSERIES
select RTAS_ERROR_LOGGING
select PPC_UDBG_16550
select PPC_NATIVE
+# No need to "select PPC_PLATFORM_CHOSEN" for pSeries, as it is the default
+# platform for PPC64, see PPC_DEFAULT_PLATFORM
default y

config PPC_ISERIES
bool "IBM Legacy iSeries"
depends on PPC_MULTIPLATFORM && PPC64
select PPC_INDIRECT_IO
+ select PPC_PLATFORM_CHOSEN

config PPC_CHRP
bool "Common Hardware Reference Platform (CHRP) based machines"
@@ -423,6 +434,8 @@ config PPC_CHRP
select PPC_MPC106
select PPC_UDBG_16550
select PPC_NATIVE
+# No need to "select PPC_PLATFORM_CHOSEN" here, as it is the default platform
+# for PPC32, see PPC_DEFAULT_PLATFORM
default y

config PPC_MPC52xx
@@ -436,6 +449,7 @@ config PPC_EFIKA
select RTAS_PROC
select PPC_MPC52xx
select PPC_NATIVE
+ select PPC_PLATFORM_CHOSEN
default n

config PPC_LITE5200
@@ -451,6 +465,7 @@ config PPC_PMAC
select PPC_INDIRECT_PCI if PPC32
select PPC_MPC106 if PPC32
select PPC_NATIVE
+ select PPC_PLATFORM_CHOSEN
default y

config PPC_PMAC64
@@ -461,6 +476,7 @@ config PPC_PMAC64
select MPIC_BROKEN_U3
select GENERIC_TBSYNC
select PPC_970_NAP
+ select PPC_PLATFORM_CHOSEN
default y

config PPC_PREP
@@ -471,6 +487,7 @@ config PPC_PREP
select PPC_INDIRECT_PCI
select PPC_UDBG_16550
select PPC_NATIVE
+ select PPC_PLATFORM_CHOSEN
default n

config PPC_MAPLE
@@ -485,6 +502,7 @@ config PPC_MAPLE
select PPC_NATIVE
select PPC_RTAS
select ATA_NONSTANDARD if ATA
+ select PPC_PLATFORM_CHOSEN
default n
help
This option enables support for the Maple 970FX Evaluation Board.
@@ -498,6 +516,7 @@ config PPC_PASEMI
select PPC_UDBG_16550
select GENERIC_TBSYNC
select PPC_NATIVE
+ select PPC_PLATFORM_CHOSEN
help
This option enables support for PA Semi's PWRficient line
of SoC processors, including PA6T-1682M
@@ -524,11 +543,13 @@ config PPC_IBM_CELL_BLADE
select MMIO_NVRAM
select PPC_UDBG_16550
select UDBG_RTAS_CONSOLE
+ select PPC_PLATFORM_CHOSEN

config PPC_PS3
bool "Sony PS3 (incomplete)"
depends on PPC_MULTIPLATFORM && PPC64
select PPC_CELL
+ select PPC_PLATFORM_CHOSEN
help
This option enables support for the Sony PS3 game console
and other platforms using the PS3 hypervisor.
--
1.5.0.6


Yours Tony

linux.conf.au http://linux.conf.au/ || http://lca2008.linux.org.au/
Jan 28 - Feb 02 2008 The Australian Linux Technical Conference!

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