From c39770cd63776516c4e244702e859d84913ba9ed Mon Sep 17 00:00:00 2001 From: Andrey Smirnov Date: Tue, 10 Apr 2018 13:02:24 +0100 Subject: [PATCH] hw/arm: Allow manually specified /psci node Change the code to avoid exiting QEMU if user provided DTB contains manually specified /psci node and skip any /psci related fixups instead. Fixes: 4cbca7d9b4 ("hw/arm: Move virt's PSCI DT fixup code to arm/boot.c") Signed-off-by: Andrey Smirnov Reported-by: Marc Zyngier Tested-by: Marc Zyngier Message-id: 20180402205654.14572-1-andrew.smirnov@gmail.com Reviewed-by: Peter Maydell Signed-off-by: Peter Maydell --- hw/arm/boot.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/hw/arm/boot.c b/hw/arm/boot.c index 9319b12fcd..26184bcd7c 100644 --- a/hw/arm/boot.c +++ b/hw/arm/boot.c @@ -422,6 +422,7 @@ static void fdt_add_psci_node(void *fdt) ARMCPU *armcpu = ARM_CPU(qemu_get_cpu(0)); const char *psci_method; int64_t psci_conduit; + int rc; psci_conduit = object_property_get_int(OBJECT(armcpu), "psci-conduit", @@ -439,6 +440,15 @@ static void fdt_add_psci_node(void *fdt) g_assert_not_reached(); } + /* + * If /psci node is present in provided DTB, assume that no fixup + * is necessary and all PSCI configuration should be taken as-is + */ + rc = fdt_path_offset(fdt, "/psci"); + if (rc >= 0) { + return; + } + qemu_fdt_add_subnode(fdt, "/psci"); if (armcpu->psci_version == 2) { const char comp[] = "arm,psci-0.2\0arm,psci";