1 files changed, 86 insertions, 0 deletions
diff --git a/arch/x86/include/asm/sipi.h b/arch/x86/include/asm/sipi.h
new file mode 100644
index 0000000000..25d7d311d2
--- /dev/null
+++ b/arch/x86/include/asm/sipi.h
@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2015 Gooogle, Inc
+ * Written by Simon Glass <sjg@chromium.org>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _ASM_SIPI_H
+#define _ASM_SIPI_H
+
+#define AP_DEFAULT_BASE 0x30000
+#define AP_DEFAULT_SIZE 0x10000
+
+#ifndef __ASSEMBLER__
+
+/**
+ * struct sipi_params_16bit - 16-bit SIPI entry-point parameters
+ *
+ * These are set up in the same space as the SIPI 16-bit code so that each AP
+ * can access the parameters when it boots.
+ *
+ * Each of these must be set up for the AP to boot, except @segment which is
+ * set in the assembly code.
+ *
+ * @ap_start:		32-bit SIPI entry point for U-Boot
+ * @segment:		Code segment for U-Boot
+ * @pad:		Padding (not used)
+ * @gdt_limit:		U-Boot GDT limit (X86_GDT_SIZE - 1)
+ * @gdt:		U-Boot GDT (gd->arch.gdt)
+ * @unused:		Not used
+ */
+struct __packed sipi_params_16bit {
+	u32 ap_start;
+	u16 segment;
+	u16 pad;
+	u16 gdt_limit;
+	u32 gdt;
+	u16 unused;
+};
+
+/**
+ * struct sipi_params - 32-bit SIP entry-point parameters
+ *
+ * These are used by the AP init code and must be set up before the APs start.
+ *
+ * The stack area extends down from @stack_top, with @stack_size allocated
+ * for each AP.
+ *
+ * @idt_ptr:		Interrupt descriptor table pointer
+ * @stack_top:		Top of the AP stack area
+ * @stack_size:		Size of each AP's stack
+ * @microcode_lock:	Used to ensure only one AP loads microcode at once
+ *			0xffffffff enables parallel loading.
+ * @microcode_ptr:	Pointer to microcode, or 0 if none
+ * @msr_table_ptr:	Pointer to saved MSRs, a list of struct saved_msr
+ * @msr_count:		Number of saved MSRs
+ * @c_handler:		C function to call once early init is complete
+ * @ap_count:		Shared atomic value to allocate CPU indexes
+ */
+struct sipi_params {
+	u32 idt_ptr;
+	u32 stack_top;
+	u32 stack_size;
+	u32 microcode_lock;
+	u32 microcode_ptr;
+	u32 msr_table_ptr;
+	u32 msr_count;
+	u32 c_handler;
+	atomic_t ap_count;
+};
+
+/* 16-bit AP entry point */
+void ap_start16(void);
+
+/* end of 16-bit code/data, marks the region to be copied to SIP vector */
+void ap_start16_code_end(void);
+
+/* 32-bit AP entry point */
+void ap_start(void);
+
+extern char sipi_params_16bit[];
+extern char sipi_params[];
+
+#endif /* __ASSEMBLER__ */
+
+#endif