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/*
* Copyright (c) 2018 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Dornierstr. 4
* 82178 Puchheim
* Germany
* <info@embedded-brains.de>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#include <rtems/bspIo.h>
#include <rtems/console.h>
#include <rtems/sysinit.h>
#include <rtems/termiostypes.h>
#include <bsp.h>
#include <bsp/fdt.h>
#include <bsp/irq.h>
#include <dev/serial/htif.h>
#include <libfdt.h>
#if RISCV_ENABLE_HTIF_SUPPORT > 0
static htif_console_context htif_console_instance;
#endif
static struct {
rtems_termios_device_context *context;
void (*putchar)(rtems_termios_device_context *base, char c);
int (*getchar)(rtems_termios_device_context *base);
} riscv_console;
static void riscv_output_char(char c)
{
(*riscv_console.putchar)(riscv_console.context, c);
}
static int riscv_get_console_node(const void *fdt)
{
const char *stdout_path;
int node;
node = fdt_path_offset(fdt, "/chosen");
stdout_path = fdt_getprop(fdt, node, "stdout-path", NULL);
if (stdout_path == NULL) {
stdout_path = "";
}
return fdt_path_offset(fdt, stdout_path);
}
static void riscv_console_probe(void)
{
const void *fdt;
int node;
int console_node;
fdt = bsp_fdt_get();
console_node = riscv_get_console_node(fdt);
node = fdt_next_node(fdt, -1, NULL);
while (node >= 0) {
#if RISCV_ENABLE_HTIF_SUPPORT
if (fdt_node_check_compatible(fdt, node, "ucb,htif0") == 0) {
htif_console_context_init(&htif_console_instance.base, node);
riscv_console.context = &htif_console_instance.base;
riscv_console.putchar = htif_console_putchar;
riscv_console.getchar = htif_console_getchar;
};
#endif
node = fdt_next_node(fdt, node, NULL);
}
BSP_output_char = riscv_output_char;
}
static void riscv_output_char_init(char c)
{
riscv_console_probe();
riscv_output_char(c);
}
BSP_output_char_function_type BSP_output_char = riscv_output_char_init;
BSP_polling_getchar_function_type BSP_poll_char = NULL;
rtems_status_code console_initialize(
rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg
)
{
rtems_termios_device_context *base;
char htif_path[] = "/dev/ttyShtif";
rtems_termios_initialize();
#if RISCV_ENABLE_HTIF_SUPPORT
base = &htif_console_instance.base;
rtems_termios_device_install(htif_path, &htif_console_handler, NULL, base);
if (base == riscv_console.context) {
link(htif_path, CONSOLE_DEVICE_NAME);
}
#endif
return RTEMS_SUCCESSFUL;
}
RTEMS_SYSINIT_ITEM(
riscv_console_probe,
RTEMS_SYSINIT_BSP_START,
RTEMS_SYSINIT_ORDER_LAST
);
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