mb/emulation/qemu-i440fx: change file handling

Reduce the number of fw_find_file calls by returning the file structure
at fw_cfg_check_file. The file structure can then be used to allocate memory
and access the file content directly without recurrence searching.
Remove now unnecessary function fw_cfg_load_file.

Fixed breaking function calls and add include guard at fw_cfg_if.h.

Change-Id: I48cc943aaa999e4323e9d7e5dd666c5316533dcc
Signed-off-by: Thomas Heijligen <thomas.heijligen@secunet.com>
Reviewed-on: https://review.coreboot.org/c/30845
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>

1 files changed, 6 insertions, 2 deletions

diff --git a/src/mainboard/emulation/qemu-i440fx/fw_cfg.h b/src/mainboard/emulation/qemu-i440fx/fw_cfg.h
index 5bf16af203..b5cdb9292c 100644
--- a/src/mainboard/emulation/qemu-i440fx/fw_cfg.h
+++ b/src/mainboard/emulation/qemu-i440fx/fw_cfg.h
@@ -10,9 +10,13 @@
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  */
+#ifndef FW_CFG_H
+#define FW_CFG_H
+#include "fw_cfg_if.h"
 
 void fw_cfg_get(int entry, void *dst, int dstlen);
-int fw_cfg_check_file(const char *name);
-void fw_cfg_load_file(const char *name, void *dst);
+int fw_cfg_check_file(FWCfgFile *file, const char *name);
 int fw_cfg_max_cpus(void);
 unsigned long fw_cfg_smbios_tables(int *handle, unsigned long *current);
+
+#endif /* FW_CFG_H */