x86: Move qemu CPU fixup function into its own file

This function is specific to qemu so it seems best to keep it separate
from the generic code.

Move it out to a new file and update the condition to use if() instead of
 #ifdef

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

3 files changed, 79 insertions, 68 deletions

diff --git a/arch/x86/cpu/Makefile b/arch/x86/cpu/Makefile
index b6a010e..0e90a38 100644
--- a/arch/x86/cpu/Makefile
+++ b/arch/x86/cpu/Makefile
@@ -54,6 +54,7 @@ obj-$(CONFIG_INTEL_QUEENSBAY) += queensbay/
 obj-$(CONFIG_INTEL_TANGIER) += tangier/
 obj-$(CONFIG_APIC) += lapic.o ioapic.o
 obj-$(CONFIG_$(SPL_TPL_)X86_32BIT_INIT) += irq.o
+obj-$(CONFIG_QFW) += qfw_cpu.o
 ifndef CONFIG_$(SPL_)X86_64
 obj-$(CONFIG_SMP) += mp_init.o
 endif
diff --git a/arch/x86/cpu/mp_init.c b/arch/x86/cpu/mp_init.c
index fefbf8f..7b09f90 100644
--- a/arch/x86/cpu/mp_init.c
+++ b/arch/x86/cpu/mp_init.c
@@ -418,69 +418,6 @@ static int init_bsp(struct udevice **devp)
 	return 0;
 }
 
-#ifdef CONFIG_QFW
-static int qemu_cpu_fixup(void)
-{
-	int ret;
-	int cpu_num;
-	int cpu_online;
-	struct udevice *dev, *pdev;
-	struct cpu_platdata *plat;
-	char *cpu;
-
-	/* first we need to find '/cpus' */
-	for (device_find_first_child(dm_root(), &pdev);
-	     pdev;
-	     device_find_next_child(&pdev)) {
-		if (!strcmp(pdev->name, "cpus"))
-			break;
-	}
-	if (!pdev) {
-		printf("unable to find cpus device\n");
-		return -ENODEV;
-	}
-
-	/* calculate cpus that are already bound */
-	cpu_num = 0;
-	for (uclass_find_first_device(UCLASS_CPU, &dev);
-	     dev;
-	     uclass_find_next_device(&dev)) {
-		cpu_num++;
-	}
-
-	/* get actual cpu number */
-	cpu_online = qemu_fwcfg_online_cpus();
-	if (cpu_online < 0) {
-		printf("unable to get online cpu number: %d\n", cpu_online);
-		return cpu_online;
-	}
-
-	/* bind addtional cpus */
-	dev = NULL;
-	for (; cpu_num < cpu_online; cpu_num++) {
-		/*
-		 * allocate device name here as device_bind_driver() does
-		 * not copy device name, 8 bytes are enough for
-		 * sizeof("cpu@") + 3 digits cpu number + '\0'
-		 */
-		cpu = malloc(8);
-		if (!cpu) {
-			printf("unable to allocate device name\n");
-			return -ENOMEM;
-		}
-		sprintf(cpu, "cpu@%d", cpu_num);
-		ret = device_bind_driver(pdev, "cpu_qemu", cpu, &dev);
-		if (ret) {
-			printf("binding cpu@%d failed: %d\n", cpu_num, ret);
-			return ret;
-		}
-		plat = dev_get_parent_platdata(dev);
-		plat->cpu_id = cpu_num;
-	}
-	return 0;
-}
-#endif
-
 int mp_init(struct mp_params *p)
 {
 	int num_aps;
@@ -494,11 +431,11 @@ int mp_init(struct mp_params *p)
 	if (ret)
 		return ret;
 
-#ifdef CONFIG_QFW
-	ret = qemu_cpu_fixup();
-	if (ret)
-		return ret;
-#endif
+	if (IS_ENABLED(CONFIG_QFW)) {
+		ret = qemu_cpu_fixup();
+		if (ret)
+			return ret;
+	}
 
 	ret = init_bsp(&cpu);
 	if (ret) {
diff --git a/arch/x86/cpu/qfw_cpu.c b/arch/x86/cpu/qfw_cpu.c
new file mode 100644
index 0000000..49e9dfc
--- /dev/null
+++ b/arch/x86/cpu/qfw_cpu.c
@@ -0,0 +1,73 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2015 Google, Inc
+ */
+
+#include <common.h>
+#include <cpu.h>
+#include <dm.h>
+#include <qfw.h>
+#include <dm/lists.h>
+#include <dm/uclass-internal.h>
+#include <dm/root.h>
+
+int qemu_cpu_fixup(void)
+{
+	int ret;
+	int cpu_num;
+	int cpu_online;
+	struct udevice *dev, *pdev;
+	struct cpu_platdata *plat;
+	char *cpu;
+
+	/* first we need to find '/cpus' */
+	for (device_find_first_child(dm_root(), &pdev);
+	     pdev;
+	     device_find_next_child(&pdev)) {
+		if (!strcmp(pdev->name, "cpus"))
+			break;
+	}
+	if (!pdev) {
+		printf("unable to find cpus device\n");
+		return -ENODEV;
+	}
+
+	/* calculate cpus that are already bound */
+	cpu_num = 0;
+	for (uclass_find_first_device(UCLASS_CPU, &dev);
+	     dev;
+	     uclass_find_next_device(&dev)) {
+		cpu_num++;
+	}
+
+	/* get actual cpu number */
+	cpu_online = qemu_fwcfg_online_cpus();
+	if (cpu_online < 0) {
+		printf("unable to get online cpu number: %d\n", cpu_online);
+		return cpu_online;
+	}
+
+	/* bind addtional cpus */
+	dev = NULL;
+	for (; cpu_num < cpu_online; cpu_num++) {
+		/*
+		 * allocate device name here as device_bind_driver() does
+		 * not copy device name, 8 bytes are enough for
+		 * sizeof("cpu@") + 3 digits cpu number + '\0'
+		 */
+		cpu = malloc(8);
+		if (!cpu) {
+			printf("unable to allocate device name\n");
+			return -ENOMEM;
+		}
+		sprintf(cpu, "cpu@%d", cpu_num);
+		ret = device_bind_driver(pdev, "cpu_qemu", cpu, &dev);
+		if (ret) {
+			printf("binding cpu@%d failed: %d\n", cpu_num, ret);
+			return ret;
+		}
+		plat = dev_get_parent_platdata(dev);
+		plat->cpu_id = cpu_num;
+	}
+	return 0;
+}