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author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2014-07-02 15:36:20 +1000 |
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committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2014-07-02 15:36:20 +1000 |
commit | 1d880992fd8c8457a2d990ac6622cfd58fb1b261 (patch) | |
tree | c4c843b12e96b5612c315db5a23c5da1a900618c /include/console.h | |
download | skiboot-1d880992fd8c8457a2d990ac6622cfd58fb1b261.zip skiboot-1d880992fd8c8457a2d990ac6622cfd58fb1b261.tar.gz skiboot-1d880992fd8c8457a2d990ac6622cfd58fb1b261.tar.bz2 |
Initial commit of Open Source release
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'include/console.h')
-rw-r--r-- | include/console.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/include/console.h b/include/console.h new file mode 100644 index 0000000..791f770 --- /dev/null +++ b/include/console.h @@ -0,0 +1,68 @@ +/* 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 <lock.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 0x6630696567726173 + 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); +}; + +extern struct lock con_lock; + +extern bool dummy_console_enabled(void); +extern void force_dummy_console(void); +extern bool flush_console(void); +extern bool __flush_console(void); +extern void set_console(struct con_ops *driver); + +extern void clear_console(void); +extern void memcons_add_properties(void); +extern void dummy_console_add_nodes(void); + +extern bool uart_console_poll(void); + +#endif /* __CONSOLE_H */ |