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