GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/arch/x86/cpu/x86_64/cpu.c

@@ -0,0 +1,69 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2016 Google, Inc
+ * Written by Simon Glass <sjg@chromium.org>
+ */
+
+#include <common.h>
+#include <cpu_func.h>
+#include <debug_uart.h>
+
+/*
+ * Global declaration of gd.
+ *
+ * As we write to it before relocation we have to make sure it is not put into
+ * a .bss section which may overlap a .rela section. Initialization forces it
+ * into a .data section which cannot overlap any .rela section.
+ */
+struct global_data *global_data_ptr = (struct global_data *)~0;
+
+void arch_setup_gd(gd_t *new_gd)
+{
+	global_data_ptr = new_gd;
+}
+
+int cpu_has_64bit(void)
+{
+	return true;
+}
+
+void enable_caches(void)
+{
+	/* Not implemented */
+}
+
+void disable_caches(void)
+{
+	/* Not implemented */
+}
+
+int dcache_status(void)
+{
+	return true;
+}
+
+int x86_mp_init(void)
+{
+	/* Not implemented */
+	return 0;
+}
+
+int misc_init_r(void)
+{
+	return 0;
+}
+
+int checkcpu(void)
+{
+	return 0;
+}
+
+int print_cpuinfo(void)
+{
+	return 0;
+}
+
+int x86_cpu_reinit_f(void)
+{
+	return 0;
+}