Unfortunately the multi-core boot for QEMU x86 has been broken since
commit 77a5e2d3bc61 ("x86: mp_init: Set up the CPU numbers at the start").
In order to support QEMU x86 multi-core boot, the /cpus node must be
bound before any actual fix up in qemu_cpu_fixup(). This adds the
uclass_get() call to ensure this, just like what was done before.
Fixes: 77a5e2d3bc61 ("x86: mp_init: Set up the CPU numbers at the start")
Signed-off-by: Bin Meng <bmeng...@gmail.com>
---
arch/x86/cpu/qfw_cpu.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/x86/cpu/qfw_cpu.c b/arch/x86/cpu/qfw_cpu.c
index a35de87..b959ead 100644
--- a/arch/x86/cpu/qfw_cpu.c
+++ b/arch/x86/cpu/qfw_cpu.c
@@ -17,10 +17,16 @@ int qemu_cpu_fixup(void)
int ret;
int cpu_num;
int cpu_online;
+ struct uclass *uc;
struct udevice *dev, *pdev;
struct cpu_plat *plat;
char *cpu;
+ /* This will cause the CPUs devices to be bound */
+ ret = uclass_get(UCLASS_CPU, &uc);
+ if (ret)
+ return ret;
+
/* first we need to find '/cpus' */
for (device_find_first_child(dm_root(), &pdev);
pdev;
--
2.7.4
