| // 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 */ |