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// 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 */
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