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| /openbmc/linux/arch/powerpc/kernel/ |
| H A D | cpu_setup_6xx.S | diff 8631837dbf8bc29546685ccc2f9dcef8aea9a4da Wed Jan 24 04:38:38 CST 2024 Matthias Schiffer <matthias.schiffer@ew.tq-group.com> powerpc/6xx: set High BAT Enable flag on G2_LE cores
[ Upstream commit a038a3ff8c6582404834852c043dadc73a5b68b4 ]
MMU_FTR_USE_HIGH_BATS is set for G2_LE cores and derivatives like e300cX,
but the high BATs need to be enabled in HID2 to work. Add register
definitions and add the needed setup to __setup_cpu_603.
This fixes boot on CPUs like the MPC5200B with STRICT_KERNEL_RWX enabled
on systems where the flag has not been set by the bootloader already.
Fixes: e4d6654ebe6e ("powerpc/mm/32s: rework mmu_mapin_ram()")
Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240124103838.43675-1-matthias.schiffer@ew.tq-group.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
|
| /openbmc/linux/arch/powerpc/include/asm/ |
| H A D | reg.h | diff 8631837dbf8bc29546685ccc2f9dcef8aea9a4da Wed Jan 24 04:38:38 CST 2024 Matthias Schiffer <matthias.schiffer@ew.tq-group.com> powerpc/6xx: set High BAT Enable flag on G2_LE cores
[ Upstream commit a038a3ff8c6582404834852c043dadc73a5b68b4 ]
MMU_FTR_USE_HIGH_BATS is set for G2_LE cores and derivatives like e300cX,
but the high BATs need to be enabled in HID2 to work. Add register
definitions and add the needed setup to __setup_cpu_603.
This fixes boot on CPUs like the MPC5200B with STRICT_KERNEL_RWX enabled
on systems where the flag has not been set by the bootloader already.
Fixes: e4d6654ebe6e ("powerpc/mm/32s: rework mmu_mapin_ram()")
Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240124103838.43675-1-matthias.schiffer@ew.tq-group.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
|