mirror of
https://github.com/zephyrproject-rtos/zephyr
synced 2025-08-03 21:35:33 +00:00
e18fcbba5a
Now that device_api attribute is unmodified at runtime, as well as all the other attributes, it is possible to switch all device driver instance to be constant. A coccinelle rule is used for this: @r_const_dev_1 disable optional_qualifier @ @@ -struct device * +const struct device * @r_const_dev_2 disable optional_qualifier @ @@ -struct device * const +const struct device * Fixes #27399 Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
81 lines
1.8 KiB
C
81 lines
1.8 KiB
C
/*
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* Copyright (c) 2016 Cadence Design Systems, Inc.
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <xtensa/simcall.h>
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#include <device.h>
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#include <init.h>
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#if defined(CONFIG_PRINTK) || defined(CONFIG_STDOUT_CONSOLE)
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/**
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* @brief Output one character to SIMULATOR console
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* @param c Character to output
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* @return The character passed as input.
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*/
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static int console_out(int c)
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{
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char buf[16];
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register int a2 __asm__ ("a2") = SYS_write;
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register int a3 __asm__ ("a3") = 1;
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register char *a4 __asm__ ("a4") = buf;
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register int a5 __asm__ ("a5") = 1;
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register int ret_val __asm__ ("a2");
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register int ret_err __asm__ ("a3");
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buf[0] = (char)c;
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__asm__ volatile ("simcall"
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: "=a" (ret_val), "=a" (ret_err)
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: "a" (a2), "a" (a3), "a" (a4), "a" (a5)
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: "memory");
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return c;
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}
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#endif
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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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/**
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* @brief Install printk/stdout hook for Xtensa Simulator console output
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* @return N/A
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*/
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static void xt_sim_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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/**
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* @brief Initialize the console/debug port
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* @return 0 if successful, otherwise failed.
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*/
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static int xt_sim_console_init(const struct device *arg)
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{
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ARG_UNUSED(arg);
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xt_sim_console_hook_install();
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return 0;
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}
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/* UART consloe initializes after the UART device itself */
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SYS_INIT(xt_sim_console_init,
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#if defined(CONFIG_EARLY_CONSOLE)
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PRE_KERNEL_1,
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#else
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POST_KERNEL,
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#endif
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CONFIG_XTENSA_CONSOLE_INIT_PRIORITY);
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