1 files changed, 91 insertions, 0 deletions
diff --git a/roms/skiboot/include/console.h b/roms/skiboot/include/console.h
new file mode 100644
index 000000000..02fc7a4b6
--- /dev/null
+++ b/roms/skiboot/include/console.h
@@ -0,0 +1,91 @@
+// SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+/* Copyright 2013-2018 IBM Corp. */
+
+#ifndef __CONSOLE_H
+#define __CONSOLE_H
+
+#include "unistd.h"
+
+/*
+ * Our internal console uses the format of BML new-style in-memory
+ * console and supports input for setups without a physical console
+ * facility or FSP.
+ *
+ * (This is v3 of the format, the previous one sucked)
+ */
+struct memcons {
+	__be64 magic;
+#define MEMCONS_MAGIC	0x6630696567726173LL
+	__be64 obuf_phys;
+	__be64 ibuf_phys;
+	__be32 obuf_size;
+	__be32 ibuf_size;
+	__be32 out_pos;
+#define MEMCONS_OUT_POS_WRAP	0x80000000u
+#define MEMCONS_OUT_POS_MASK	0x00ffffffu
+	__be32 in_prod;
+	__be32 in_cons;
+};
+
+extern struct memcons memcons;
+
+#define INMEM_CON_IN_LEN	16
+#define INMEM_CON_OUT_LEN	(INMEM_CON_LEN - INMEM_CON_IN_LEN)
+
+/* Console driver */
+struct con_ops {
+	size_t (*write)(const char *buf, size_t len);
+	size_t (*read)(char *buf, size_t len);
+	bool (*poll_read)(void);
+};
+
+struct opal_con_ops {
+	const char *name;
+
+	/*
+	 * OPAL console driver specific init function.
+	 */
+	void (*init)(void);
+
+	int64_t (*write)(int64_t term, __be64 *__len, const uint8_t *buf);
+	int64_t (*read)(int64_t term, __be64 *__len, uint8_t *buf);
+
+	/*
+	 * returns the amount of space available in the console write buffer
+	 */
+	int64_t (*space)(int64_t term_number, __be64 *__length);
+
+	/*
+	 * Forces the write buffer to be flushed by the driver
+	 */
+	int64_t (*flush)(int64_t term_number);
+};
+
+extern bool flush_console(void);
+
+extern void set_console(struct con_ops *driver);
+extern void set_opal_console(struct opal_con_ops *driver);
+extern void init_opal_console(void);
+
+extern void console_complete_flush(void);
+
+extern size_t mambo_console_write(const char *buf, size_t count);
+extern void enable_mambo_console(void);
+
+ssize_t console_write(bool flush_to_drivers, const void *buf, size_t count);
+
+extern void clear_console(void);
+extern void memcons_add_properties(void);
+extern void dummy_console_add_nodes(void);
+
+struct dt_node *add_opal_console_node(int index, const char *type,
+	uint32_t write_buffer_size);
+
+/* OPAL console drivers */
+extern struct opal_con_ops uart_opal_con;
+extern struct opal_con_ops fsp_opal_con;
+extern struct opal_con_ops dummy_opal_con;
+
+void mprintf(const char *fmt, ...);
+
+#endif /* __CONSOLE_H */