626 lines
15 KiB
C
626 lines
15 KiB
C
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/*
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* Copyright (c) 2006-2024, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2022-08-25 GuEe-GUI first version
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*/
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#include <rtthread.h>
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#include <rtdevice.h>
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#include <drivers/platform.h>
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#include <drivers/core/bus.h>
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#include "../serial/serial_dm.h"
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#define DBG_TAG "rtdm.ofw"
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#define DBG_LVL DBG_INFO
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#include <rtdbg.h>
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#include "ofw_internal.h"
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struct rt_ofw_stub *rt_ofw_stub_probe_range(struct rt_ofw_node *np,
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const struct rt_ofw_stub *stub_start, const struct rt_ofw_stub *stub_end)
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{
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const struct rt_ofw_stub *stub = RT_NULL;
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if (np && stub_start && stub_end &&
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!rt_ofw_node_test_flag(np, RT_OFW_F_READLY) &&
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!rt_ofw_node_test_flag(np, RT_OFW_F_SYSTEM))
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{
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struct rt_ofw_prop *compat_prop = rt_ofw_get_prop(np, "compatible", RT_NULL);
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if (compat_prop)
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{
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rt_ofw_foreach_stub(stub, stub_start, stub_end)
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{
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struct rt_ofw_node_id *id;
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if (!stub->ids)
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{
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continue;
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}
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id = rt_ofw_prop_match(compat_prop, stub->ids);
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if (id)
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{
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if (!stub->handler(np, id))
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{
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rt_ofw_node_set_flag(np, RT_OFW_F_READLY);
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}
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break;
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}
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}
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}
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}
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return (struct rt_ofw_stub *)stub;
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}
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static const char *ofw_console_serial_find(char *dst_con, struct rt_ofw_node *np)
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{
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rt_object_t rt_obj = RT_NULL;
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const char *ofw_name = RT_NULL;
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struct rt_serial_device *rt_serial = rt_ofw_data(np);
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if (rt_serial)
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{
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rt_obj = &rt_serial->parent.parent;
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}
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/*
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* This is a dangerous behavior because rt_data can be modified by other
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* user. But fortunately, we can check if the rt_data is a rt_device or
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* rt_serial_device.
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*/
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if (rt_obj && rt_object_get_type(rt_obj) == RT_Object_Class_Device &&
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rt_serial->parent.type == RT_Device_Class_Char)
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{
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ofw_name = np->full_name;
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rt_strncpy(dst_con, rt_obj->name, RT_NAME_MAX);
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}
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return ofw_name;
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}
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static int tty_device_compare(rt_device_t dev, void *data)
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{
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rt_ubase_t *args_list;
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char *dst_con;
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const char *console, **ofw_name;
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const struct rt_ofw_node_id *id;
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struct rt_platform_device *pdev;
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int *tty_idx, tty_id, tty_name_len;
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pdev = rt_container_of(dev, struct rt_platform_device, parent);
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id = pdev->id;
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args_list = data;
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tty_idx = (int *)args_list[0];
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tty_id = args_list[1];
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console = (const char *)args_list[2];
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tty_name_len = args_list[3];
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dst_con = (char *)args_list[4];
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ofw_name = (const char **)args_list[5];
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if (id && id->type[0] && !strncmp(id->type, console, tty_name_len))
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{
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if (*tty_idx == tty_id)
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{
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*ofw_name = ofw_console_serial_find(dst_con, pdev->parent.ofw_node);
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return RT_EOK;
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}
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++*tty_idx;
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}
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return -RT_EEMPTY;
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}
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static const char *ofw_console_tty_find(char *dst_con, const char *con)
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{
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const char *ofw_name = RT_NULL;
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static rt_bus_t platform_bus = RT_NULL;
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if (!platform_bus)
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{
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platform_bus = rt_bus_find_by_name("platform");
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}
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if (platform_bus)
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{
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rt_ubase_t args_list[6];
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const char *console = con;
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int tty_idx = 0, tty_id = 0, tty_name_len;
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con += sizeof("tty") - 1;
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while (*con && !(*con >= '0' && *con <= '9'))
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{
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++con;
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}
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tty_name_len = con - console;
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while (*con && *con >= '0' && *con <= '9')
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{
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tty_id *= 10;
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tty_id += *con - '0';
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++con;
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}
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args_list[0] = (rt_ubase_t)&tty_idx;
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args_list[1] = tty_id;
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args_list[2] = (rt_ubase_t)console;
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args_list[3] = tty_name_len;
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args_list[4] = (rt_ubase_t)dst_con;
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args_list[5] = (rt_ubase_t)&ofw_name;
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rt_bus_for_each_dev(platform_bus, &args_list, tty_device_compare);
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}
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return ofw_name;
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}
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rt_err_t rt_ofw_console_setup(void)
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{
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rt_err_t err = -RT_ENOSYS;
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char con_name[RT_NAME_MAX], *options = RT_NULL;
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const char *ofw_name = RT_NULL, *stdout_path, *con;
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/* chosen.console > chosen.stdout-path > RT_CONSOLE_DEVICE_NAME */
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con = rt_ofw_bootargs_select("console=", 0);
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for (int i = 1; con; ++i)
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{
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if (!rt_strncmp(con, "uart", sizeof("uart") - 1))
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{
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rt_strncpy(con_name, con, RT_NAME_MAX);
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err = RT_EOK;
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break;
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}
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else if (!rt_strncmp(con, "tty", sizeof("tty") - 1))
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{
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ofw_name = ofw_console_tty_find(con_name, con);
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if (ofw_name)
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{
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const char *ch = con;
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while (*ch && *ch != ' ')
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{
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if (*ch++ == ',')
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{
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options = (char *)ch;
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break;
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}
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}
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err = RT_EOK;
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break;
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}
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}
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con = rt_ofw_bootargs_select("console=", i);
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}
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if (err == -RT_ENOSYS && !rt_ofw_prop_read_string(ofw_node_chosen, "stdout-path", &stdout_path))
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{
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struct rt_ofw_node *stdout_np = rt_ofw_find_node_by_path(stdout_path);
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if (stdout_np && (ofw_name = ofw_console_serial_find(con_name, stdout_np)))
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{
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err = RT_EOK;
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}
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}
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if (err == -RT_ENOSYS)
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{
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rt_device_t serial = rt_device_find(RT_CONSOLE_DEVICE_NAME);
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if (serial)
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{
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ofw_name = rt_ofw_node_full_name(serial->ofw_node);
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con = RT_CONSOLE_DEVICE_NAME;
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}
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else
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{
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LOG_W("Console will probably fail to setup");
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}
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}
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else
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{
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con = con_name;
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}
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rt_console_set_device(con);
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if (options)
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{
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rt_device_t con_dev = rt_console_get_device();
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if (con_dev)
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{
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struct serial_configure con_conf = serial_cfg_from_args(options);
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rt_device_control(con_dev, RT_DEVICE_CTRL_CONFIG, &con_conf);
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}
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}
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rt_fdt_earlycon_kick(FDT_EARLYCON_KICK_COMPLETED);
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LOG_I("Console: %s (%s)", con, ofw_name ? ofw_name : "<unknown>");
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return err;
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}
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const char *rt_ofw_bootargs_select(const char *key, int index)
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{
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const char *value = RT_NULL;
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if (key && index >= 0)
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{
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static char **values = RT_NULL;
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static rt_size_t bootargs_nr = 1;
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const char *bootargs = RT_NULL, *ch;
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if (bootargs_nr && !values &&
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(bootargs_nr = 0, !rt_ofw_prop_read_string(ofw_node_chosen, "bootargs", &bootargs)) &&
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bootargs && (bootargs = rt_strdup(bootargs)))
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{
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rt_bool_t quotes = RT_TRUE;
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rt_size_t length = rt_strlen(bootargs);
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const char *bootargs_end = bootargs + length;
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for (ch = bootargs; ch < bootargs_end; ++ch)
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{
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if (*ch == '"')
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{
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quotes = !quotes;
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continue;
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}
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if (*ch != ' ' || !quotes)
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{
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continue;
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}
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++bootargs_nr;
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while (*ch == ' ' && ch < bootargs_end)
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{
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*(char *)ch++ = '\0';
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}
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--ch;
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}
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if (bootargs_nr)
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{
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/* last arg */
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++bootargs_nr;
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values = rt_malloc(sizeof(char *) * bootargs_nr);
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}
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if (values)
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{
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int idx = 0;
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for (int i = 0; i < length; ++i)
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{
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for (; i < length && !bootargs[i]; ++i)
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{
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}
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if (i < length)
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{
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values[idx++] = (char *)&bootargs[i];
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}
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for (; i < length && bootargs[i]; ++i)
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{
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}
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}
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}
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else
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{
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rt_free((char *)bootargs);
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}
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}
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if (values)
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{
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int keylen = rt_strlen(key);
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for (int idx = 0, count = 0; idx < bootargs_nr; ++idx)
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{
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if (!rt_strncmp(values[idx], key, keylen))
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{
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if (count == index)
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{
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value = values[idx] + keylen;
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break;
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}
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++count;
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}
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}
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}
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}
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return value;
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}
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#ifdef RT_USING_CONSOLE
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static void dts_put_depth(int depth)
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{
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while (depth --> 0)
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{
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rt_kputs(" ");
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}
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}
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static rt_bool_t dts_test_string_list(const void *value, int size)
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{
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const char *str, *str_start, *str_end;
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if (!size)
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{
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return RT_FALSE;
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}
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str = value;
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/* String end with '\0' */
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if (str[size - 1] != '\0')
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{
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return RT_FALSE;
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}
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/* Get string list end */
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str_end = str + size;
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while (str < str_end)
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{
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str_start = str;
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/* Before string list end, not '\0' and a printable characters */
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while (str < str_end && *str && ((unsigned char)*str >= ' ' && (unsigned char)*str <= '~'))
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{
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++str;
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}
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/* Not zero, or not increased */
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if (*str != '\0' || str == str_start)
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{
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return RT_FALSE;
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}
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/* Next string */
|
||
|
|
++str;
|
||
|
|
}
|
||
|
|
|
||
|
|
return RT_TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void ofw_node_dump_dts(struct rt_ofw_node *np, rt_bool_t sibling_too)
|
||
|
|
{
|
||
|
|
int depth = 0;
|
||
|
|
struct rt_ofw_prop *prop;
|
||
|
|
struct rt_ofw_node *org_np = np;
|
||
|
|
|
||
|
|
while (np)
|
||
|
|
{
|
||
|
|
dts_put_depth(depth);
|
||
|
|
rt_kputs(np->full_name);
|
||
|
|
rt_kputs(" {\n");
|
||
|
|
|
||
|
|
prop = np->props;
|
||
|
|
|
||
|
|
/* Print prop start */
|
||
|
|
++depth;
|
||
|
|
|
||
|
|
while (prop)
|
||
|
|
{
|
||
|
|
dts_put_depth(depth);
|
||
|
|
|
||
|
|
rt_kputs(prop->name);
|
||
|
|
|
||
|
|
/* Have value? */
|
||
|
|
if (prop->length > 0)
|
||
|
|
{
|
||
|
|
int length = prop->length;
|
||
|
|
void *value = prop->value;
|
||
|
|
|
||
|
|
rt_kputs(" = ");
|
||
|
|
|
||
|
|
if (dts_test_string_list(value, length))
|
||
|
|
{
|
||
|
|
/* String list */
|
||
|
|
char *str = value;
|
||
|
|
|
||
|
|
do {
|
||
|
|
rt_kputs("\"");
|
||
|
|
rt_kputs(str);
|
||
|
|
rt_kputs("\", ");
|
||
|
|
|
||
|
|
str += rt_strlen(str) + 1;
|
||
|
|
|
||
|
|
} while (str < (char *)value + length);
|
||
|
|
|
||
|
|
rt_kputs("\b\b");
|
||
|
|
}
|
||
|
|
else if ((length % 4) == 0)
|
||
|
|
{
|
||
|
|
/* u32 data in <?> */
|
||
|
|
fdt32_t *cell = value;
|
||
|
|
|
||
|
|
rt_kputs("<");
|
||
|
|
|
||
|
|
length /= 4;
|
||
|
|
|
||
|
|
for (int i = 0; i < length; ++i)
|
||
|
|
{
|
||
|
|
rt_kprintf("0x%02x ", fdt32_to_cpu(cell[i]));
|
||
|
|
}
|
||
|
|
|
||
|
|
rt_kputs("\b>");
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
/* Byte data in [?] */
|
||
|
|
rt_uint8_t *byte = value;
|
||
|
|
|
||
|
|
rt_kputs("[");
|
||
|
|
|
||
|
|
for (int i = 0; i < length; ++i)
|
||
|
|
{
|
||
|
|
rt_kprintf("%02x ", *byte++);
|
||
|
|
}
|
||
|
|
|
||
|
|
rt_kputs("\b]");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
rt_kputs(";\n");
|
||
|
|
|
||
|
|
prop = prop->next;
|
||
|
|
}
|
||
|
|
|
||
|
|
--depth;
|
||
|
|
/* Print prop end */
|
||
|
|
|
||
|
|
if (np->child)
|
||
|
|
{
|
||
|
|
rt_kputs("\n");
|
||
|
|
np = np->child;
|
||
|
|
++depth;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
dts_put_depth(depth);
|
||
|
|
rt_kputs("};\n");
|
||
|
|
|
||
|
|
if (!sibling_too && org_np == np)
|
||
|
|
{
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
while (np->parent && !np->sibling)
|
||
|
|
{
|
||
|
|
np = np->parent;
|
||
|
|
--depth;
|
||
|
|
|
||
|
|
if (depth >= 0)
|
||
|
|
{
|
||
|
|
dts_put_depth(depth);
|
||
|
|
rt_kputs("};\n");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!sibling_too && org_np == np)
|
||
|
|
{
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
np = np->sibling;
|
||
|
|
|
||
|
|
if (np)
|
||
|
|
{
|
||
|
|
rt_kputs("\n");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void rt_ofw_node_dump_dts(struct rt_ofw_node *np, rt_bool_t sibling_too)
|
||
|
|
{
|
||
|
|
if (np)
|
||
|
|
{
|
||
|
|
if (!rt_strcmp(np->name, "/"))
|
||
|
|
{
|
||
|
|
struct fdt_info *header = (struct fdt_info *)np->name;
|
||
|
|
struct fdt_reserve_entry *rsvmap = header->rsvmap;
|
||
|
|
|
||
|
|
rt_kprintf("/dts-v%x/;\n\n", fdt_version(header->fdt));
|
||
|
|
|
||
|
|
for (int i = header->rsvmap_nr - 1; i >= 0; --i)
|
||
|
|
{
|
||
|
|
rt_kprintf("/memreserve/\t%p %p;\n",
|
||
|
|
ofw_static_cast(rt_size_t, fdt64_to_cpu(rsvmap->address)),
|
||
|
|
ofw_static_cast(rt_size_t, fdt64_to_cpu(rsvmap->size)));
|
||
|
|
|
||
|
|
++rsvmap;
|
||
|
|
}
|
||
|
|
|
||
|
|
rt_kputs(np->name);
|
||
|
|
}
|
||
|
|
|
||
|
|
ofw_node_dump_dts(np, sibling_too);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef RT_USING_MSH
|
||
|
|
static void ofw_dts(int argc, char**argv)
|
||
|
|
{
|
||
|
|
if (ofw_node_root)
|
||
|
|
{
|
||
|
|
if (argc == 1)
|
||
|
|
{
|
||
|
|
rt_ofw_node_dump_dts(ofw_node_root, RT_TRUE);
|
||
|
|
}
|
||
|
|
else if (argv[1][0] == '/')
|
||
|
|
{
|
||
|
|
struct rt_ofw_node *np = rt_ofw_find_node_by_path(argv[1]);
|
||
|
|
|
||
|
|
if (np)
|
||
|
|
{
|
||
|
|
rt_ofw_node_dump_dts(np, RT_FALSE);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
rt_kprintf("%s not found.\n", argv[1]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if (argc >= 2 && !rt_strcmp(argv[1], "list") && argv[2][0] == '/')
|
||
|
|
{
|
||
|
|
struct rt_ofw_node *np = rt_ofw_find_node_by_path(argv[2]);
|
||
|
|
|
||
|
|
if (np)
|
||
|
|
{
|
||
|
|
const char *split = np == ofw_node_root ? "" : "/";
|
||
|
|
|
||
|
|
np = np->child;
|
||
|
|
|
||
|
|
while (np)
|
||
|
|
{
|
||
|
|
rt_kprintf("%s%s%s\n", argv[2], split, np->full_name);
|
||
|
|
np = np->sibling;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
rt_kprintf("%s not found.\n", argv[2]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
rt_kprintf("Usage: %s {list} {path}\n", __func__);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
rt_kprintf("\"/\" path not found.");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
MSH_CMD_EXPORT(ofw_dts, dump the dts or node for this platform);
|
||
|
|
#endif /* RT_USING_MSH */
|
||
|
|
#endif /* RT_USING_CONSOLE */
|