powerpc/64e: Tie PPC_BOOK3E_64 to PPC_E500MC

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The only 64-bit Book3E CPUs we support require the selection
of CONFIG_PPC_E500MC.

However our Kconfig allows configurating a kernel that has 64-bit
Book3E support, but without CONFIG_PPC_E500MC enabled. Such a kernel
would never boot, it doesn't know about any CPUs.

To fix this, force CONFIG_PPC_E500MC to be selected whenever we are
building a 64-bit Book3E kernel.

And add a test to detect future situations where cpu_specs is empty.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/ae5d8b8b3ccc346e61d2ec729767f92766273f0b.1663606875.git.christophe.leroy@csgroup.eu

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Christophe Leroy 2022-09-19 19:01:26 +02:00 • committed by Michael Ellerman

parent d1203f32d8

commit 0069f3d14e

2 changed files with 4 additions and 0 deletions

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arch/powerpc/kernel/cputable.c

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arch/powerpc/platforms/Kconfig.cputype

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