1 files changed, 54 insertions, 0 deletions
diff --git a/arch/x86/include/asm/post.h b/arch/x86/include/asm/post.h
new file mode 100644
index 0000000..939b6fa
--- /dev/null
+++ b/arch/x86/include/asm/post.h
@@ -0,0 +1,54 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (c) 2014 Google, Inc
+ */
+
+#ifndef _post_h
+#define _post_h
+
+/* port to use for post codes */
+#define POST_PORT		0x80
+
+/* post codes which represent various stages of init */
+#define POST_START		0x1e
+#define POST_CAR_START		0x1f
+#define POST_CAR_SIPI		0x20
+#define POST_CAR_MTRR		0x21
+#define POST_CAR_UNCACHEABLE	0x22
+#define POST_CAR_BASE_ADDRESS	0x23
+#define POST_CAR_MASK		0x24
+#define POST_CAR_FILL		0x25
+#define POST_CAR_ROM_CACHE	0x26
+#define POST_CAR_MRC_CACHE	0x27
+#define POST_CAR_CPU_CACHE	0x28
+#define POST_START_STACK	0x29
+#define POST_START_DONE		0x2a
+#define POST_CPU_INIT		0x2b
+#define POST_EARLY_INIT		0x2c
+#define POST_CPU_INFO		0x2d
+#define POST_PRE_MRC		0x2e
+#define POST_MRC		0x2f
+#define POST_DRAM		0x30
+#define POST_LAPIC		0x31
+#define POST_OS_RESUME		0x40
+
+#define POST_RAM_FAILURE	0xea
+#define POST_BIST_FAILURE	0xeb
+#define POST_CAR_FAILURE	0xec
+#define POST_RESUME_FAILURE	0xed
+
+/* Output a post code using al - value must be 0 to 0xff */
+#ifdef __ASSEMBLY__
+#define post_code(value) \
+	movb	$value, %al; \
+	outb	%al, $POST_PORT
+#else
+#include <asm/io.h>
+
+static inline void post_code(int code)
+{
+	outb(code, POST_PORT);
+}
+#endif
+
+#endif