diff mbox

powerpc64: Enable CONFIG_E500 and CONFIG_PPC_E500MC for e5500/e6500

Message ID 1471877203-29327-1-git-send-email-david.engraf@sysgo.com (mailing list archive)
State Rejected
Delegated to: Scott Wood
Headers show

Commit Message

David Engraf Aug. 22, 2016, 2:46 p.m. UTC
The PowerPC e5500/e6500 architecture is based on the e500mc core. Enable
CONFIG_E500 and CONFIG_PPC_E500MC when e5500/e6500 is used.

This will also fix using CONFIG_PPC_QEMU_E500 on PPC64.

Signed-off-by: David Engraf <david.engraf@sysgo.com>
---
 arch/powerpc/platforms/Kconfig.cputype | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

Comments

Crystal Wood Sept. 25, 2016, 6:20 a.m. UTC | #1
On Mon, Aug 22, 2016 at 04:46:43PM +0200, David Engraf wrote:
> The PowerPC e5500/e6500 architecture is based on the e500mc core. Enable
> CONFIG_E500 and CONFIG_PPC_E500MC when e5500/e6500 is used.
> 
> This will also fix using CONFIG_PPC_QEMU_E500 on PPC64.
> 
> Signed-off-by: David Engraf <david.engraf@sysgo.com>
> ---
>  arch/powerpc/platforms/Kconfig.cputype | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
> index f32edec..0382da7 100644
> --- a/arch/powerpc/platforms/Kconfig.cputype
> +++ b/arch/powerpc/platforms/Kconfig.cputype
> @@ -125,11 +125,13 @@ config POWER8_CPU
>  
>  config E5500_CPU
>  	bool "Freescale e5500"
> -	depends on E500
> +	select E500
> +	select PPC_E500MC
>  
>  config E6500_CPU
>  	bool "Freescale e6500"
> -	depends on E500
> +	select E500
> +	select PPC_E500MC

These config symbols are for setting -mcpu.  Kernels built with
CONFIG_GENERIC_CPU should also work on e5500/e6500.

The problem is that CONFIG_PPC_QEMU_E500 doesn't select E500 (I didn't
notice it before because usually CORENET_GENERIC is enabled as well).

Note that your patch, by eliminating the dependency on E500, would make
it possible to build a book3s kernel with E5500_CPU/E6500_CPU, which
doesn't make any sense.

-Scott
diff mbox

Patch

diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index f32edec..0382da7 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -125,11 +125,13 @@  config POWER8_CPU
 
 config E5500_CPU
 	bool "Freescale e5500"
-	depends on E500
+	select E500
+	select PPC_E500MC
 
 config E6500_CPU
 	bool "Freescale e6500"
-	depends on E500
+	select E500
+	select PPC_E500MC
 
 endchoice