bootstate: use structure pointers for scheduling callbacks

The GCC 4.9.2 update showed that the boot_state_init_entry
structures were being padded and assumed to be aligned in to an
increased size. The bootstate scheduler for static entries,
boot_state_schedule_static_entries(), was then calculating the
wrong values within the array. To fix this just use a pointer to
the boot_state_init_entry structure that needs to be scheduled.

In addition to the previous issue noted above, the .bs_init
section was sitting in the read only portion of the image while
the fields within it need to be writable. Also, the
boot_state_schedule_static_entries() was using symbol comparison
to terminate a loop which in C can lead the compiler to always
evaluate the loop at least once since the language spec indicates
no 2 symbols can be the same value.

Change-Id: I6dc5331c2979d508dde3cd5c3332903d40d8048b
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/8699
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

8 files changed, 11 insertions, 32 deletions

diff --git a/src/soc/intel/baytrail/dptf.c b/src/soc/intel/baytrail/dptf.c
index 044a807906..e8753198d4 100644
--- a/src/soc/intel/baytrail/dptf.c
+++ b/src/soc/intel/baytrail/dptf.c
@@ -49,6 +49,4 @@ static void dptf_init(void *unused)
 	reg_script_run(dptf_init_settings);
 }
 
-BOOT_STATE_INIT_ENTRIES(dptf_init_bscb) = {
-	BOOT_STATE_INIT_ENTRY(BS_DEV_INIT, BS_ON_ENTRY, dptf_init, NULL),
-};
+BOOT_STATE_INIT_ENTRY(BS_DEV_INIT, BS_ON_ENTRY, dptf_init, NULL);
diff --git a/src/soc/intel/baytrail/perf_power.c b/src/soc/intel/baytrail/perf_power.c
index 2cde77f36b..dade339e46 100644
--- a/src/soc/intel/baytrail/perf_power.c
+++ b/src/soc/intel/baytrail/perf_power.c
@@ -288,7 +288,5 @@ static void perf_power(void *unused)
 	reg_script_run(perf_power_settings);
 }
 
-BOOT_STATE_INIT_ENTRIES(disable_rom_cache_bscb) = {
-	BOOT_STATE_INIT_ENTRY(BS_OS_RESUME, BS_ON_ENTRY, perf_power, NULL),
-	BOOT_STATE_INIT_ENTRY(BS_PAYLOAD_LOAD, BS_ON_EXIT, perf_power, NULL),
-};
+BOOT_STATE_INIT_ENTRY(BS_OS_RESUME, BS_ON_ENTRY, perf_power, NULL);
+BOOT_STATE_INIT_ENTRY(BS_PAYLOAD_LOAD, BS_ON_EXIT, perf_power, NULL);
diff --git a/src/soc/intel/baytrail/southcluster.c b/src/soc/intel/baytrail/southcluster.c
index c39244717b..a635b0d786 100644
--- a/src/soc/intel/baytrail/southcluster.c
+++ b/src/soc/intel/baytrail/southcluster.c
@@ -568,9 +568,5 @@ static void finalize_chipset(void *unused)
 	outb(APM_CNT_FINALIZE, APM_CNT);
 }
 
-BOOT_STATE_INIT_ENTRIES(finalize_bscb) = {
-	BOOT_STATE_INIT_ENTRY(BS_OS_RESUME, BS_ON_ENTRY,
-	                      finalize_chipset, NULL),
-	BOOT_STATE_INIT_ENTRY(BS_PAYLOAD_LOAD, BS_ON_EXIT,
-	                      finalize_chipset, NULL),
-};
+BOOT_STATE_INIT_ENTRY(BS_OS_RESUME, BS_ON_ENTRY, finalize_chipset, NULL);
+BOOT_STATE_INIT_ENTRY(BS_PAYLOAD_LOAD, BS_ON_EXIT, finalize_chipset, NULL);
diff --git a/src/soc/intel/baytrail/spi.c b/src/soc/intel/baytrail/spi.c
index a83fb8e5d4..cf40140e09 100644
--- a/src/soc/intel/baytrail/spi.c
+++ b/src/soc/intel/baytrail/spi.c
@@ -323,9 +323,7 @@ static void spi_init_cb(void *unused)
 	spi_init();
 }
 
-BOOT_STATE_INIT_ENTRIES(spi_init_bscb) = {
-        BOOT_STATE_INIT_ENTRY(BS_DEV_INIT, BS_ON_ENTRY, spi_init_cb, NULL),
-};
+BOOT_STATE_INIT_ENTRY(BS_DEV_INIT, BS_ON_ENTRY, spi_init_cb, NULL);
 #endif
 
 int spi_claim_bus(struct spi_slave *slave)
diff --git a/src/soc/intel/broadwell/elog.c b/src/soc/intel/broadwell/elog.c
index a6a2813728..79484a9606 100644
--- a/src/soc/intel/broadwell/elog.c
+++ b/src/soc/intel/broadwell/elog.c
@@ -133,6 +133,4 @@ static void pch_log_state(void *unused)
 	pch_log_wake_source(ps);
 }
 
-BOOT_STATE_INIT_ENTRIES(pch_log) = {
-	BOOT_STATE_INIT_ENTRY(BS_DEV_INIT, BS_ON_ENTRY, pch_log_state, NULL)
-};
+BOOT_STATE_INIT_ENTRY(BS_DEV_INIT, BS_ON_ENTRY, pch_log_state, NULL);
diff --git a/src/soc/intel/broadwell/finalize.c b/src/soc/intel/broadwell/finalize.c
index 67cba66db7..4f7a5181ab 100644
--- a/src/soc/intel/broadwell/finalize.c
+++ b/src/soc/intel/broadwell/finalize.c
@@ -119,9 +119,5 @@ static void broadwell_finalize(void *unused)
 	post_code(POST_OS_BOOT);
 }
 
-BOOT_STATE_INIT_ENTRIES(finalize) = {
-	BOOT_STATE_INIT_ENTRY(BS_OS_RESUME, BS_ON_ENTRY,
-			      broadwell_finalize, NULL),
-	BOOT_STATE_INIT_ENTRY(BS_PAYLOAD_LOAD, BS_ON_EXIT,
-			      broadwell_finalize, NULL),
-};
+BOOT_STATE_INIT_ENTRY(BS_OS_RESUME, BS_ON_ENTRY, broadwell_finalize, NULL);
+BOOT_STATE_INIT_ENTRY(BS_PAYLOAD_LOAD, BS_ON_EXIT, broadwell_finalize, NULL);
diff --git a/src/soc/intel/broadwell/spi.c b/src/soc/intel/broadwell/spi.c
index 4710271070..0069d10ea2 100644
--- a/src/soc/intel/broadwell/spi.c
+++ b/src/soc/intel/broadwell/spi.c
@@ -315,9 +315,7 @@ static void spi_init_cb(void *unused)
 	spi_init();
 }
 
-BOOT_STATE_INIT_ENTRIES(spi_init_bscb) = {
-        BOOT_STATE_INIT_ENTRY(BS_DEV_INIT, BS_ON_ENTRY, spi_init_cb, NULL),
-};
+BOOT_STATE_INIT_ENTRY(BS_DEV_INIT, BS_ON_ENTRY, spi_init_cb, NULL);
 
 int spi_claim_bus(struct spi_slave *slave)
 {
diff --git a/src/soc/intel/common/mrc_cache.c b/src/soc/intel/common/mrc_cache.c
index 8f0d18f8b3..5860201477 100644
--- a/src/soc/intel/common/mrc_cache.c
+++ b/src/soc/intel/common/mrc_cache.c
@@ -303,9 +303,6 @@ static void update_mrc_cache(void *unused)
 	}
 }
 
-BOOT_STATE_INIT_ENTRIES(mrc_cache_update) = {
-	BOOT_STATE_INIT_ENTRY(BS_WRITE_TABLES, BS_ON_ENTRY,
-	                      update_mrc_cache, NULL),
-};
+BOOT_STATE_INIT_ENTRY(BS_WRITE_TABLES, BS_ON_ENTRY, update_mrc_cache, NULL);
 
 #endif /* defined(__PRE_RAM__) */