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/* Copyright 2013-2014 IBM Corp.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#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 {
uint64_t magic;
#define MEMCONS_MAGIC 0x6630696567726173LL
uint64_t obuf_phys;
uint64_t ibuf_phys;
uint32_t obuf_size;
uint32_t ibuf_size;
uint32_t out_pos;
#define MEMCONS_OUT_POS_WRAP 0x80000000u
#define MEMCONS_OUT_POS_MASK 0x00ffffffu
uint32_t in_prod;
uint32_t 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, int64_t *len, const uint8_t *buf);
int64_t (*read)(int64_t term, int64_t *len, uint8_t *buf);
/*
* returns the amount of space available in the console write buffer
*/
int64_t (*space)(int64_t term_number, int64_t *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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