summaryrefslogtreecommitdiffstats
path: root/arch/riscv/kernel/soc.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/riscv/kernel/soc.c')
-rw-r--r--arch/riscv/kernel/soc.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/riscv/kernel/soc.c b/arch/riscv/kernel/soc.c
new file mode 100644
index 000000000..a0516172a
--- /dev/null
+++ b/arch/riscv/kernel/soc.c
@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2020 Western Digital Corporation or its affiliates.
+ */
+#include <linux/init.h>
+#include <linux/libfdt.h>
+#include <linux/pgtable.h>
+#include <asm/soc.h>
+
+/*
+ * This is called extremly early, before parse_dtb(), to allow initializing
+ * SoC hardware before memory or any device driver initialization.
+ */
+void __init soc_early_init(void)
+{
+ void (*early_fn)(const void *fdt);
+ const struct of_device_id *s;
+ const void *fdt = dtb_early_va;
+
+ for (s = (void *)&__soc_early_init_table_start;
+ (void *)s < (void *)&__soc_early_init_table_end; s++) {
+ if (!fdt_node_check_compatible(fdt, 0, s->compatible)) {
+ early_fn = s->data;
+ early_fn(fdt);
+ return;
+ }
+ }
+}