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ppc/spapr: Move GPRs setup to one place

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At the moment "pseries" starts in SLOF which only expects the FDT blob
pointer in r3. As we are going to introduce a OpenFirmware support in
QEMU, we will be booting OF clients directly and these expect a stack
pointer in r1, Linux looks at r3/r4 for the initramdisk location
(although vmlinux can find this from the device tree but zImage from
distro kernels cannot).

This extends spapr_cpu_set_entry_state() to take more registers. This
should cause no behavioral change.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Message-Id: <20200310050733.29805-2-aik@ozlabs.ru>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Alexey Kardashevskiy 2020-03-10 16:07:31 +11:00 • committed by David Gibson
parent 94f040aaec
commit 395a20d3cc
4 changed files with 10 additions and 4 deletions
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2
hw/ppc/spapr_rtas.c
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@ -190,7 +190,7 @@ static void rtas_start_cpu(PowerPCCPU *callcpu, SpaprMachineState *spapr,
*/
newcpu->env.tb_env->tb_offset = callcpu->env.tb_env->tb_offset;
spapr_cpu_set_entry_state(newcpu, start, r3);
spapr_cpu_set_entry_state(newcpu, start, 0, r3, 0);
qemu_cpu_kick(CPU(newcpu));