diff options
authorKrzysztof Kozlowski <krzk@kernel.org>2017-02-28 12:08:20 +0000
committerPeter Maydell <peter.maydell@linaro.org>2017-02-28 12:08:20 +0000
commitf3a6339a5bbc160d327299c67bb68c6d07fa4a61 (patch)
parent1e0228fd20aa46ac1f02cffee946cdd4ffaf8b96 (diff)
hw/arm/exynos: Fix proper mapping of CPUs by providing real cluster IDpull-target-arm-20170228
The Exynos4210 has cluster ID 0x9 in its MPIDR register (raw value 0x8000090x). If this cluster ID is not provided, then Linux kernel cannot map DeviceTree nodes to MPIDR values resulting in kernel warning and lack of any secondary CPUs: DT missing boot CPU MPIDR[23:0], fall back to default cpu_logical_map ... smp: Bringing up secondary CPUs ... smp: Brought up 1 node, 1 CPU SMP: Total of 1 processors activated (24.00 BogoMIPS). Provide a cluster ID so Linux will see proper MPIDR and will try to bring the secondary CPU online. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Message-id: 20170226200142.31169-2-krzk@kernel.org Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
1 files changed, 12 insertions, 0 deletions
diff --git a/hw/arm/exynos4210.c b/hw/arm/exynos4210.c
index a0ecbe8c1f..1d2b50cc4e 100644
--- a/hw/arm/exynos4210.c
+++ b/hw/arm/exynos4210.c
@@ -142,6 +142,16 @@ void exynos4210_write_secondary(ARMCPU *cpu,
+static uint64_t exynos4210_calc_affinity(int cpu)
+ uint64_t mp_affinity;
+ /* Exynos4210 has 0x9 as cluster ID */
+ mp_affinity = (0x9 << ARM_AFF1_SHIFT) | cpu;
+ return mp_affinity;
Exynos4210State *exynos4210_init(MemoryRegion *system_mem,
unsigned long ram_size)
@@ -167,6 +177,8 @@ Exynos4210State *exynos4210_init(MemoryRegion *system_mem,
s->cpu[n] = ARM_CPU(cpuobj);
+ object_property_set_int(cpuobj, exynos4210_calc_affinity(n),
+ "mp-affinity", &error_abort);
object_property_set_int(cpuobj, EXYNOS4210_SMP_PRIVATE_BASE_ADDR,
"reset-cbar", &error_abort);
object_property_set_bool(cpuobj, true, "realized", &error_fatal);