cbmem: use boot state machine

There were previously 2 functions, init_cbmem_pre_device() and
init_cbmem_post_device(), where the 2 cbmem implementations
implemented one or the other. These 2 functions are no longer
needed to be called in the boot flow once the boot state callbacks
are utilized.

Change-Id: Ida71f1187bdcc640ae600705ddb3517e1410a80d
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/3136
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

src/include/cbmem.h

@@ -161,11 +161,6 @@ void cbmem_list(void);
 void cbmem_arch_init(void);
 void __attribute__((weak)) cbmem_post_handling(void);
 void cbmem_print_entry(int n, u32 id, u64 start, u64 size);
-/* The pre|post device cbmem initialization functions are for the
- * ramstage main to call. When cbmem is actually initialized depends on
- * the cbmem implementation. */
-void init_cbmem_pre_device(void);
-void init_cbmem_post_device(void);
 #else
 static inline void cbmem_arch_init(void) {}
 #endif /* __PRE_RAM__ */

src/lib/cbmem.c

@@ -19,6 +19,7 @@
 
 #include <types.h>
 #include <string.h>
+#include <bootstate.h>
 #include <cbmem.h>
 #include <console/console.h>
 #if CONFIG_HAVE_ACPI_RESUME && !defined(__PRE_RAM__)
@@ -232,11 +233,7 @@ int cbmem_initialize(void)
 #endif
 
 #ifndef __PRE_RAM__
-/* cbmem cannot be initialized before device drivers, but it can be initialized
- * after the drivers have run. */
-void init_cbmem_pre_device(void) {}
-
-void init_cbmem_post_device(void)
+static void init_cbmem_post_device(void *unused)
 {
 	cbmem_initialize();
 #if CONFIG_CONSOLE_CBMEM
@@ -244,6 +241,11 @@ void init_cbmem_post_device(void)
 #endif
 }
 
+BOOT_STATE_INIT_ENTRIES(cbmem_bscb) = {
+	BOOT_STATE_INIT_ENTRY(BS_POST_DEVICE, BS_ON_ENTRY,
+	                      init_cbmem_post_device, NULL),
+};
+
 void cbmem_list(void)
 {
 	struct cbmem_entry *cbmem_toc;

src/lib/dynamic_cbmem.c

@@ -17,6 +17,7 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
+#include <bootstate.h>
 #include <boot/tables.h>
 #include <console/console.h>
 #include <cbmem.h>
@@ -411,7 +412,7 @@ void *cbmem_entry_start(const struct cbmem_entry *entry)
 /* selected cbmem can be initialized early in ramstage. Additionally, that
  * means cbmem console can be reinitialized early as well. The post_device
  * function is empty since cbmem was initialized early in ramstage. */
-void init_cbmem_pre_device(void)
+static void init_cbmem_pre_device(void *unused)
 {
 	cbmem_initialize();
 #if CONFIG_CONSOLE_CBMEM
@@ -419,7 +420,10 @@ void init_cbmem_pre_device(void)
 #endif /* CONFIG_CONSOLE_CBMEM */
 }
 
-void init_cbmem_post_device(void) {}
+BOOT_STATE_INIT_ENTRIES(cbmem_bscb) = {
+	BOOT_STATE_INIT_ENTRY(BS_PRE_DEVICE, BS_ON_ENTRY,
+	                      init_cbmem_pre_device, NULL),
+};
 
 void cbmem_add_lb_mem(struct lb_memory *mem)
 {

src/lib/hardwaremain.c

@@ -97,7 +97,6 @@ static struct boot_state boot_states[] = {
 
 static boot_state_t bs_pre_device(void *arg)
 {
-	init_cbmem_pre_device();
 	return BS_DEV_INIT_CHIPS;
 }
 
@@ -154,8 +153,6 @@ static boot_state_t bs_post_device(void *arg)
 {
 	timestamp_stash(TS_DEVICE_DONE);
 
-	init_cbmem_post_device();
-
 	timestamp_sync();
 
 	return BS_OS_RESUME_CHECK;