commit cd7dd2220f76e4c8036023e0b18f3788b5b95b1d
author Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Mon Mar 23 20:46:35 2020 +0300
committer Alexey Brodkin <abrodkin@synopsys.com> Mon Apr 27 11:20:26 2020 +0300
tree edf884cb364dc96f558b7626789e5695fb82471c
parent 062703bd0fc841546df7eae672b7cfb9e7f4307a

ARC: HSDK-4xD: add support for SLC enable/disable

Add support for SLC enable/disable via hsdk_init command.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

board/synopsys/hsdk/hsdk.c

diff --git a/board/synopsys/hsdk/hsdk.c b/board/synopsys/hsdk/hsdk.c
index b8b995d..b25b133 100644
--- a/board/synopsys/hsdk/hsdk.c
+++ b/board/synopsys/hsdk/hsdk.c
@@ -80,6 +80,7 @@
 	u32_env nvlim;
 	u32_env icache;
 	u32_env dcache;
+	u32_env l2_cache;
 };
 
 /*
@@ -129,6 +130,9 @@
 	{ "non_volatile_limit", ENV_HEX, true, 0, 0xF,	&env_common.nvlim },
 	{ "icache_ena",	ENV_HEX, true,	0, 1,		&env_common.icache },
 	{ "dcache_ena",	ENV_HEX, true,	0, 1,		&env_common.dcache },
+#if defined(CONFIG_BOARD_HSDK_4XD)
+	{ "l2_cache_ena",	ENV_HEX, true,	0, 1,		&env_common.l2_cache },
+#endif /* CONFIG_BOARD_HSDK_4XD */
 	{}
 };
 
@@ -188,6 +192,11 @@
 	return get_board_type_runtime() == type_req;
 }
 
+static bool is_board_match_config(enum board_type type_req)
+{
+	return get_board_type_config() == type_req;
+}
+
 static const char * board_name(enum board_type type)
 {
 	switch (type) {
@@ -278,6 +287,18 @@
 	flush_n_invalidate_dcache_all();
 }
 
+static void init_cluster_slc(void)
+{
+	/* ARC HS38 doesn't support SLC disabling */
+	if (!is_board_match_config(T_BOARD_HSDK_4XD))
+		return;
+
+	if (env_common.l2_cache.val)
+		slc_enable();
+	else
+		slc_disable();
+}
+
 static void init_master_icache(void)
 {
 	if (icache_status()) {
@@ -657,6 +678,7 @@
 	 * cores.
 	 */
 	init_cluster_nvlim();
+	init_cluster_slc();
 }
 
 static int check_master_cpu_id(void)