commit 8e83dd460647972c4f46c19f8dc3d3ad7baeb550
author David Hendricks <dhendrix@chromium.org> Thu May 08 20:04:02 2014 -0700
committer chrome-internal-fetch <chrome-internal-fetch@google.com> Sat May 10 01:33:18 2014 +0000
tree 395976e56bfab83a6a2afe7520135390df79f18a
parent 536c34c2d92178f4e62b8ca7cfffceaf80a305f6

nyan*: Add an empty elog functions for the !CONFIG_ELOG case

Provide elog stub functions so eventlog support can be omitted
without littering code with "#if CONFIG_ELOG".

This makes it so coreboot can be built without eventlog support for
these platforms for debugging purposes.

BUG=none
BRANCH=none
TEST=compiled for Nyan and Rambi with CONFIG_ELOG unset
Signed-off-by: David Hendricks <dhendrix@chromium.org>

Change-Id: Ibf56d29a09234068773378f99ad9bffd5480dc9c
Reviewed-on: https://chromium-review.googlesource.com/198647
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Tom Warren <twarren@nvidia.com>
Commit-Queue: David Hendricks <dhendrix@chromium.org>
Tested-by: David Hendricks <dhendrix@chromium.org>

src/include/elog.h

diff --git a/src/include/elog.h b/src/include/elog.h
index b0e5260..430cf51 100644
--- a/src/include/elog.h
+++ b/src/include/elog.h
@@ -20,8 +20,6 @@
 #ifndef ELOG_H_
 #define ELOG_H_
 
-#if CONFIG_ELOG
-
 /* SMI command code for GSMI event logging */
 #define ELOG_GSMI_APM_CNT                 0xEF
 
@@ -145,6 +143,7 @@
 /* EC Shutdown Reason */
 #define ELOG_TYPE_EC_SHUTDOWN             0xa5
 
+#if CONFIG_ELOG
 /* Eventlog backing storage must be initialized before calling elog_init(). */
 extern int elog_init(void);
 extern int elog_clear(void);
@@ -155,6 +154,21 @@
 extern void elog_add_event_dword(u8 event_type, u32 data);
 extern void elog_add_event_wake(u8 source, u32 instance);
 extern int elog_smbios_write_type15(unsigned long *current, int handle);
+#else
+/* Stubs to help avoid littering sources with #if CONFIG_ELOG */
+static inline int elog_init(void) { return -1; }
+static inline int elog_clear(void) { return -1; }
+static inline void elog_add_event_raw(void) { return; }
+static inline void elog_add_event(u8 event_type) { return; }
+static inline void elog_add_event_byte(u8 event_type, u8 data) { return; }
+static inline void elog_add_event_word(u8 event_type, u16 data) { return; }
+static inline void elog_add_event_dword(u8 event_type, u32 data) { return; }
+static inline void elog_add_event_wake(u8 source, u32 instance) { return; }
+static inline int elog_smbios_write_type15(unsigned long *current,
+						int handle) {
+	return 0;
+}
+#endif
 
 #if CONFIG_ELOG_GSMI
 extern u32 gsmi_exec(u8 command, u32 *param);
@@ -165,6 +179,4 @@
 u32 boot_count_increment(void);
 #endif
 
-#endif /* !CONFIG_ELOG */
-
 #endif /* ELOG_H_ */