Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 48 insertions, 0 deletions

diff --git a/arch/arm/mach-bcm/kona_l2_cache.c b/arch/arm/mach-bcm/kona_l2_cache.c
new file mode 100644
index 000000000..59ad86304
--- /dev/null
+++ b/arch/arm/mach-bcm/kona_l2_cache.c
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2012-2014 Broadcom Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+
+#include <linux/init.h>
+#include <linux/printk.h>
+#include <asm/hardware/cache-l2x0.h>
+
+#include "bcm_kona_smc.h"
+#include "kona_l2_cache.h"
+
+void __init kona_l2_cache_init(void)
+{
+	unsigned int result;
+	int ret;
+
+	ret = bcm_kona_smc_init();
+	if (ret) {
+		pr_info("Secure API not available (%d). Skipping L2 init.\n",
+			ret);
+		return;
+	}
+
+	result = bcm_kona_smc(SSAPI_ENABLE_L2_CACHE, 0, 0, 0, 0);
+	if (result != SEC_ROM_RET_OK) {
+		pr_err("Secure Monitor call failed (%u)! Skipping L2 init.\n",
+			result);
+		return;
+	}
+
+	/*
+	 * The aux_val and aux_mask have no effect since L2 cache is already
+	 * enabled.  Pass 0s for aux_val and 1s for aux_mask for default value.
+	 */
+	ret = l2x0_of_init(0, ~0);
+	if (ret)
+		pr_err("Couldn't enable L2 cache: %d\n", ret);
+}