soc/mediatek/mt8188: Reduce lastbus configuration size by 1280 bytes

Original lastbus configuration consumes constant memory size by
allocating 16 and 8 members arrays and the utilization is bad. Refactor
the lastbus structs to save memory usage.

BRANCH=none
BUG=none
TEST=bootblock.raw.bin size is reduced from 60328 bytes to 59048 bytes.

Change-Id: I07ff9ff7c75f03219e1792b92b62814293ef43fe
Signed-off-by: Yidi Lin <yidilin@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74061
Reviewed-by: Yidi Lin <yidilin@google.com>
Reviewed-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 2 insertions, 4 deletions

diff --git a/src/soc/mediatek/common/include/soc/lastbus_v2.h b/src/soc/mediatek/common/include/soc/lastbus_v2.h
index d58da76b57..8146debf4e 100644
--- a/src/soc/mediatek/common/include/soc/lastbus_v2.h
+++ b/src/soc/mediatek/common/include/soc/lastbus_v2.h
@@ -3,8 +3,6 @@
 #ifndef SOC_MEDIATEK_COMMON_LASTBUS_V2_H
 #define SOC_MEDIATEK_COMMON_LASTBUS_V2_H
 
-#define NR_MAX_LASTBUS_IDLE_MASK	8
-#define NR_MAX_LASTBUS_MONITOR		16
 #define TIMEOUT_THRES_SHIFT		16
 #define TIMEOUT_TYPE_SHIFT		1
 #define LASTBUS_TIMEOUT_CLR		0x0200
@@ -23,7 +21,7 @@ struct lastbus_monitor {
 	size_t num_ports;
 	u16 bus_freq_mhz;
 	size_t num_idle_mask;
-	struct lastbus_idle_mask idle_masks[NR_MAX_LASTBUS_IDLE_MASK];
+	const struct lastbus_idle_mask *idle_masks;
 };
 
 struct lastbus_config {
@@ -31,7 +29,7 @@ struct lastbus_config {
 	unsigned int timeout_ms;
 	unsigned int timeout_type;
 	unsigned int num_used_monitors;
-	struct lastbus_monitor monitors[NR_MAX_LASTBUS_MONITOR];
+	const struct lastbus_monitor *monitors;
 };
 
 void lastbus_init(void);