Re: powerpc64: Enable CONFIG_E500 and CONFIG_PPC_E500MC for e5500/e6500
From: Scott Wood <oss@buserror.net>
Date: 2016-09-25 06:20:33
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On Mon, Aug 22, 2016 at 04:46:43PM +0200, David Engraf wrote:
quoted hunk ↗ jump to hunk
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 <redacted> --- 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