Remove 'cpus' node in dts files for QEMU targets,
retrieve cpu number through 'fw_cfg' interface and
fix up device tree blob at runtime.
Signed-off-by: Miao Yan <yanmiaob...@gmail.com>
---
arch/x86/cpu/qemu/qemu.c | 4 ++++
arch/x86/dts/qemu-x86_i440fx.dts | 19 +------------------
arch/x86/dts/qemu-x86_q35.dts | 19 +------------------
3 files changed, 6 insertions(+), 36 deletions(-)
diff --git a/arch/x86/cpu/qemu/qemu.c b/arch/x86/cpu/qemu/qemu.c
index d9ae066..3be3af0 100644
--- a/arch/x86/cpu/qemu/qemu.c
+++ b/arch/x86/cpu/qemu/qemu.c
@@ -15,6 +15,8 @@
static bool i440fx;
+DECLARE_GLOBAL_DATA_PTR;
+
static void qemu_chipset_init(void)
{
u16 device, xbcs;
@@ -93,6 +95,8 @@ int arch_early_init_r(void)
{
qemu_chipset_init();
+ qemu_fwcfg_fdt_fixup((void *)gd->fdt_blob, qemu_fwcfg_online_cpus());
+
return 0;
}
diff --git a/arch/x86/dts/qemu-x86_i440fx.dts b/arch/x86/dts/qemu-x86_i440fx.dts
index 4332204..79bafbd 100644
--- a/arch/x86/dts/qemu-x86_i440fx.dts
+++ b/arch/x86/dts/qemu-x86_i440fx.dts
@@ -26,24 +26,7 @@
stdout-path = "/serial";
};
- cpus {
- #address-cells = <1>;
- #size-cells = <0>;
-
- cpu@0 {
- device_type = "cpu";
- compatible = "cpu-qemu";
- reg = <0>;
- intel,apic-id = <0>;
- };
-
- cpu@1 {
- device_type = "cpu";
- compatible = "cpu-qemu";
- reg = <1>;
- intel,apic-id = <1>;
- };
- };
+ /* cpu node will be dynamically filled by U-Boot */
tsc-timer {
clock-frequency = <1000000000>;
diff --git a/arch/x86/dts/qemu-x86_q35.dts b/arch/x86/dts/qemu-x86_q35.dts
index 3e2cfac..9563344 100644
--- a/arch/x86/dts/qemu-x86_q35.dts
+++ b/arch/x86/dts/qemu-x86_q35.dts
@@ -37,24 +37,7 @@
stdout-path = "/serial";
};
- cpus {
- #address-cells = <1>;
- #size-cells = <0>;
-
- cpu@0 {
- device_type = "cpu";
- compatible = "cpu-qemu";
- reg = <0>;
- intel,apic-id = <0>;
- };
-
- cpu@1 {
- device_type = "cpu";
- compatible = "cpu-qemu";
- reg = <1>;
- intel,apic-id = <1>;
- };
- };
+ /* cpu node will be dynamically filled by U-Boot */
tsc-timer {
clock-frequency = <1000000000>;
--
1.9.1
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