rmodules: use rmodtool to create rmodules

Start using the rmodtool for generating rmodules.
rmodule_link() has been changed to create 2 rules:
one for the passed in <name>, the other for creating
<name>.rmod which is an ELF file in the format of
an rmodule.

Since the header is not compiled and linked together
with an rmodule there needs to be a way of marking
which symbol is the entry point. __rmodule_entry is
the symbol used for knowing the entry point. There
was a little churn in SMM modules to ensure an
rmodule entry point symbol takes a single argument.

Change-Id: Ie452ed866f6596bf13f137f5b832faa39f48d26e
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/5379
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)

1 files changed, 12 insertions, 1 deletions

diff --git a/src/cpu/x86/smm/smm_module_handler.c b/src/cpu/x86/smm/smm_module_handler.c
index 444e3352c7..79863d8fef 100644
--- a/src/cpu/x86/smm/smm_module_handler.c
+++ b/src/cpu/x86/smm/smm_module_handler.c
@@ -20,6 +20,7 @@
 #include <arch/io.h>
 #include <console/console.h>
 #include <cpu/x86/smm.h>
+#include <rmodule.h>
 
 typedef enum { SMI_LOCKED, SMI_UNLOCKED } smi_semaphore;
 
@@ -113,8 +114,16 @@ void *smm_get_save_state(int cpu)
 	return base;
 }
 
-void smm_handler_start(void *arg, int cpu, const struct smm_runtime *runtime)
+void asmlinkage smm_handler_start(void *arg)
 {
+	const struct smm_module_params *p;
+	const struct smm_runtime *runtime;
+	int cpu;
+
+	p = arg;
+	runtime = p->runtime;
+	cpu = p->cpu;
+
 	/* Make sure to set the global runtime. It's OK to race as the value
 	 * will be the same across CPUs as well as multiple SMIs. */
 	if (smm_runtime == NULL)
@@ -157,6 +166,8 @@ void smm_handler_start(void *arg, int cpu, const struct smm_runtime *runtime)
 	smi_set_eos();
 }
 
+RMODULE_ENTRY(smm_handler_start);
+
 /* Provide a default implementation for all weak handlers so that relocation
  * entries in the modules make sense. Without default implementations the
  * weak relocations w/o a symbol have a 0 address which is where the modules