1 files changed, 127 insertions, 0 deletions
diff --git a/bsps/riscv/riscv/console/console-config.c b/bsps/riscv/riscv/console/console-config.c
new file mode 100644
index 0000000000..06b5d69662
--- /dev/null
+++ b/bsps/riscv/riscv/console/console-config.c
@@ -0,0 +1,127 @@
+/*
+ * Copyright (c) 2018 embedded brains GmbH.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Dornierstr. 4
+ *  82178 Puchheim
+ *  Germany
+ *  <info@embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#include <rtems/bspIo.h>
+#include <rtems/console.h>
+#include <rtems/sysinit.h>
+#include <rtems/termiostypes.h>
+
+#include <bsp.h>
+#include <bsp/fdt.h>
+#include <bsp/irq.h>
+
+#include <dev/serial/htif.h>
+
+#include <libfdt.h>
+
+#if RISCV_ENABLE_HTIF_SUPPORT > 0
+static htif_console_context htif_console_instance;
+#endif
+
+static struct {
+  rtems_termios_device_context *context;
+  void (*write_polled)(
+    rtems_termios_device_context *base,
+    const char *buf,
+    size_t len
+  );
+  int (*poll_char)(rtems_termios_device_context *base);
+} riscv_console;
+
+static void riscv_output_char(char c)
+{
+  (*riscv_console.write_polled)(riscv_console.context, &c, 1);
+}
+
+static int riscv_get_console_node(const void *fdt)
+{
+  const char *stdout_path;
+  int node;
+
+  node = fdt_path_offset(fdt, "/chosen");
+
+  stdout_path = fdt_getprop(fdt, node, "stdout-path", NULL);
+  if (stdout_path == NULL) {
+    stdout_path = "";
+  }
+
+  return fdt_path_offset(fdt, stdout_path);
+}
+
+static void riscv_console_probe(void)
+{
+  const void *fdt;
+  int node;
+  int console_node;
+
+  fdt = bsp_fdt_get();
+  console_node = riscv_get_console_node(fdt);
+
+  node = fdt_next_node(fdt, -1, NULL);
+
+  while (node >= 0) {
+#if RISCV_ENABLE_HTIF_SUPPORT
+    if (fdt_node_check_compatible(fdt, node, "ucb,htif0") == 0) {
+      htif_console_context_init(&htif_console_instance.base, node);
+
+      riscv_console.context = &htif_console_instance.base;
+      riscv_console.write_polled = htif_console_write_polled;
+      riscv_console.poll_char = htif_console_poll_char;
+    };
+#endif
+
+    node = fdt_next_node(fdt, node, NULL);
+  }
+
+  BSP_output_char = riscv_output_char;
+}
+
+static void riscv_output_char_init(char c)
+{
+  riscv_console_probe();
+  riscv_output_char(c);
+}
+
+BSP_output_char_function_type BSP_output_char = riscv_output_char_init;
+
+BSP_polling_getchar_function_type BSP_poll_char = NULL;
+
+rtems_status_code console_initialize(
+  rtems_device_major_number major,
+  rtems_device_minor_number minor,
+  void *arg
+)
+{
+  rtems_termios_device_context *base;
+  char htif_path[] = "/dev/ttyShtif";
+
+  rtems_termios_initialize();
+
+#if RISCV_ENABLE_HTIF_SUPPORT
+  base = &htif_console_instance.base;
+  rtems_termios_device_install(htif_path, &htif_console_handler, NULL, base);
+
+  if (base == riscv_console.context) {
+    link(htif_path, CONSOLE_DEVICE_NAME);
+  }
+#endif
+
+  return RTEMS_SUCCESSFUL;
+}
+
+RTEMS_SYSINIT_ITEM(
+  riscv_console_probe,
+  RTEMS_SYSINIT_BSP_START,
+  RTEMS_SYSINIT_ORDER_LAST
+);