From a37cbb5896bd268393fb843812c5e39930e0dcc4 Mon Sep 17 00:00:00 2001
From: Iru Cai <mytbk920423@gmail.com>
Date: Tue, 18 May 2021 23:56:39 +0800
Subject: print out gbe

---
 src/soc/intel/broadwell/refcode/Makefile.inc          |  1 +
 src/soc/intel/broadwell/refcode/broadwell_refcode.asm |  9 +++++++--
 src/soc/intel/broadwell/refcode/print_gbe.c           | 15 +++++++++++++++
 3 files changed, 23 insertions(+), 2 deletions(-)
 create mode 100644 src/soc/intel/broadwell/refcode/print_gbe.c

diff --git a/src/soc/intel/broadwell/refcode/Makefile.inc b/src/soc/intel/broadwell/refcode/Makefile.inc
index 74bd08dfcd..e90e53b6de 100644
--- a/src/soc/intel/broadwell/refcode/Makefile.inc
+++ b/src/soc/intel/broadwell/refcode/Makefile.inc
@@ -1,4 +1,5 @@
 ramstage-libs += $(obj)/broadwell_refcode.o
+ramstage-y += print_gbe.c
 
 $(obj)/%.o: $(src)/soc/intel/broadwell/refcode/%.asm
 	echo "NASM $@"
diff --git a/src/soc/intel/broadwell/refcode/broadwell_refcode.asm b/src/soc/intel/broadwell/refcode/broadwell_refcode.asm
index 2ca802859d..e86b57388f 100644
--- a/src/soc/intel/broadwell/refcode/broadwell_refcode.asm
+++ b/src/soc/intel/broadwell/refcode/broadwell_refcode.asm
@@ -4,6 +4,8 @@
 bits 32
 
 global refcode_entry
+extern print_gbe
+global PchIsGbeRegionValid
 
 refcode_entry:
 pushad
@@ -21075,6 +21077,9 @@ pop ebp
 ret
 
 fcn_0000cf01:
+push dword [esp+4]
+call print_gbe
+add esp,4
 push ebp
 mov ebp, esp
 push edi
@@ -21089,7 +21094,7 @@ call fcn_00017d8b  ; call 0x17d8b
 mov esi, eax
 pop eax
 push dword [ebx + 4]
-call fcn_0001be90  ; call 0x1be90
+call PchIsGbeRegionValid  ; call 0x1be90
 movzx edx, byte [ebx + 0x37e]
 add esp, 0x10
 mov edi, eax
@@ -46811,7 +46816,7 @@ mov ebx, dword [ebp - 4]
 leave
 jmp near fcn_00017e4e  ; jmp 0x17e4e
 
-fcn_0001be90:
+PchIsGbeRegionValid:
 push ebp
 mov ebp, esp
 push ebx
diff --git a/src/soc/intel/broadwell/refcode/print_gbe.c b/src/soc/intel/broadwell/refcode/print_gbe.c
new file mode 100644
index 0000000000..e9021628b9
--- /dev/null
+++ b/src/soc/intel/broadwell/refcode/print_gbe.c
@@ -0,0 +1,15 @@
+#include <console/console.h>
+#include <stdint.h>
+
+void print_gbe(void *refcode_ppi);
+int PchIsGbeRegionValid(uint32_t rcba);
+
+void print_gbe(void *refcode_ppi)
+{
+	int enable_gbe = *(char*)(refcode_ppi + 0x37e);
+	uint32_t rcba = *(uint32_t*)(refcode_ppi + 4);
+
+	printk(BIOS_DEBUG, "enable_gbe = %d\n"
+			"gbe_region_valid = %d\n",
+			enable_gbe, PchIsGbeRegionValid(rcba));
+}
-- 
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