92 lines
1.9 KiB
C
92 lines
1.9 KiB
C
/*
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* Copyright (c) 2020 Intel Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/kernel.h>
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#include <zephyr/device.h>
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#include <zephyr/init.h>
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#include <zephyr/drivers/ipm.h>
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#include <zephyr/logging/log.h>
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LOG_MODULE_REGISTER(ipm_console, CONFIG_IPM_LOG_LEVEL);
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const struct device *ipm_dev;
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static int console_out(int c)
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{
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static char buf[CONFIG_IPM_CONSOLE_LINE_BUF_LEN];
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static size_t len;
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int ret;
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if (c != '\n' && len < sizeof(buf)) {
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buf[len++] = c;
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return c;
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}
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ret = ipm_send(ipm_dev, 1, len, buf, len);
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if (ret) {
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LOG_ERR("Error sending character %c over IPM, ret %d", c, ret);
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}
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memset(buf, 0, sizeof(buf));
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len = 0;
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/* After buffer is full start a new one */
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if (c != '\n') {
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buf[len++] = c;
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}
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return c;
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}
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#if defined(CONFIG_STDOUT_CONSOLE)
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extern void __stdout_hook_install(int (*hook)(int));
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#else
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#define __stdout_hook_install(x) \
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do { /* nothing */ \
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} while ((0))
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#endif
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#if defined(CONFIG_PRINTK)
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extern void __printk_hook_install(int (*fn)(int));
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#else
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#define __printk_hook_install(x) \
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do { /* nothing */ \
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} while ((0))
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#endif
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/* Install printk/stdout hooks */
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static void ipm_console_hook_install(void)
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{
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__stdout_hook_install(console_out);
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__printk_hook_install(console_out);
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}
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static int ipm_console_init(const struct device *dev)
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{
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ARG_UNUSED(dev);
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LOG_DBG("IPM console initialization");
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ipm_dev = device_get_binding(CONFIG_IPM_CONSOLE_ON_DEV_NAME);
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if (!ipm_dev) {
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LOG_ERR("Cannot get %s", CONFIG_IPM_CONSOLE_ON_DEV_NAME);
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return -ENODEV;
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}
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if (ipm_max_id_val_get(ipm_dev) < CONFIG_IPM_CONSOLE_LINE_BUF_LEN) {
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LOG_ERR("IPM driver does not support buffer length %d",
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CONFIG_IPM_CONSOLE_LINE_BUF_LEN);
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return -ENOTSUP;
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}
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ipm_console_hook_install();
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return 0;
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}
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/* Need to be initialized after IPM */
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SYS_INIT(ipm_console_init, POST_KERNEL, CONFIG_CONSOLE_INIT_PRIORITY);
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