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[bsp][qemu][a9] Adapter driver for serial port v2
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8 files changed

+533
-198
lines changed

8 files changed

+533
-198
lines changed

‎bsp/qemu-vexpress-a9/drivers/Kconfig‎

Lines changed: 21 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -11,13 +11,28 @@ config SOC_VEXPRESS_A9
1111
default y
1212

1313
menu "Onboard Peripheral Drivers"
14-
config RT_USING_UART0
15-
bool "Enable UART0"
16-
default y
17-
18-
config RT_USING_UART1
19-
bool "Enable UART1"
14+
menuconfig BSP_USING_UART
15+
bool "Enable UART"
2016
default y
17+
select RT_USING_SERIAL
18+
if BSP_USING_UART
19+
config BSP_USING_UART0
20+
bool "Enable UART0"
21+
select RT_USING_UART0
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default y
23+
config BSP_USING_UART1
24+
bool "Enable UART1"
25+
select RT_USING_UART1
26+
default n
27+
config BSP_USING_UART2
28+
bool "Enable UART2"
29+
select RT_USING_UART2
30+
default n
31+
config BSP_USING_UART3
32+
bool "Enable UART3"
33+
select RT_USING_UART3
34+
default n
35+
endif
2136

2237
config BSP_USING_LVGL
2338
bool "Enable LVGL for LCD"

‎bsp/qemu-vexpress-a9/drivers/SConscript‎

Lines changed: 5 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -12,6 +12,11 @@ if not GetDepend('BSP_DRV_EMAC'):
1212
if not GetDepend('BSP_DRV_CLCD'):
1313
SrcRemove(src, ['drv_clcd.c'])
1414

15+
if not GetDepend('RT_USING_SERIAL_V1'):
16+
SrcRemove(src, ['drv_uart.c'])
17+
if not GetDepend('RT_USING_SERIAL_V2'):
18+
SrcRemove(src, ['drv_uart_v2.c'])
19+
1520
group = DefineGroup('Drivers', src, depend = [''], CPPPATH = CPPPATH)
1621

1722
for d in list:

‎bsp/qemu-vexpress-a9/drivers/drv_uart.c‎

Lines changed: 208 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,208 @@
1+
/*
2+
* Copyright (c) 2006-2021, RT-Thread Development Team
3+
*
4+
* SPDX-License-Identifier: Apache-2.0
5+
*
6+
* Change Logs:
7+
* Date Author Notes
8+
* 2013-03-30 Bernard the first verion
9+
* 2025-04-08 Hydevcode second version
10+
*
11+
*/
12+
#include <rtthread.h>
13+
#include <rtdevice.h>
14+
#include <rtdbg.h>
15+
16+
#include "drv_uart.h"
17+
#include "board.h"
18+
#include "mmu.h"
19+
20+
21+
#ifdef RT_USING_SERIAL_V1
22+
23+
struct hw_uart_device
24+
{
25+
rt_uint32_t hw_base;
26+
rt_uint32_t irqno;
27+
struct rt_serial_device *serial;
28+
char *device_name;
29+
};
30+
31+
#define UART_DR(base) __REG32(base + 0x00)
32+
#define UART_FR(base) __REG32(base + 0x18)
33+
#define UART_CR(base) __REG32(base + 0x30)
34+
#define UART_IMSC(base) __REG32(base + 0x38)
35+
#define UART_ICR(base) __REG32(base + 0x44)
36+
37+
#define UARTFR_RXFE 0x10
38+
#define UARTFR_TXFF 0x20
39+
#define UARTIMSC_RXIM 0x10
40+
#define UARTIMSC_TXIM 0x20
41+
#define UARTICR_RXIC 0x10
42+
#define UARTICR_TXIC 0x20
43+
44+
#if defined(BSP_USING_UART0)
45+
struct rt_serial_device serial0;
46+
#endif
47+
48+
#if defined(BSP_USING_UART1)
49+
struct rt_serial_device serial1;
50+
#endif
51+
52+
#if defined(BSP_USING_UART2)
53+
struct rt_serial_device serial2;
54+
#endif
55+
56+
57+
#if defined(BSP_USING_UART3)
58+
struct rt_serial_device serial3;
59+
#endif
60+
61+
static const struct hw_uart_device _uart_device[] = {
62+
#if defined(BSP_USING_UART0)
63+
{
64+
REALVIEW_UART0_BASE,
65+
IRQ_PBA8_UART0,
66+
&serial0,
67+
"uart0",
68+
},
69+
#endif
70+
71+
#if defined(BSP_USING_UART1)
72+
{
73+
REALVIEW_UART1_BASE,
74+
IRQ_PBA8_UART1,
75+
&serial1,
76+
"uart1",
77+
},
78+
#endif
79+
80+
#if defined(BSP_USING_UART2)
81+
{
82+
REALVIEW_UART2_BASE,
83+
IRQ_PBA8_UART2,
84+
&serial2,
85+
"uart2",
86+
},
87+
#endif
88+
89+
#if defined(BSP_USING_UART3)
90+
{
91+
REALVIEW_UART3_BASE,
92+
IRQ_PBA8_UART3,
93+
&serial3,
94+
"uart3",
95+
},
96+
#endif
97+
98+
};
99+
100+
/**
101+
* @brief UART common interrupt process. This
102+
*
103+
* @param serial Serial device
104+
*/
105+
static void rt_hw_uart_isr(int irqno, void *param)
106+
{
107+
struct rt_serial_device *serial = (struct rt_serial_device *)param;
108+
rt_hw_serial_isr(serial, RT_SERIAL_EVENT_RX_IND);
109+
}
110+
111+
static rt_err_t uart_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
112+
{
113+
return RT_EOK;
114+
}
115+
116+
static rt_err_t uart_control(struct rt_serial_device *serial, int cmd, void *arg)
117+
{
118+
struct hw_uart_device *uart;
119+
120+
RT_ASSERT(serial != RT_NULL);
121+
122+
uart = (struct hw_uart_device *)serial->parent.user_data;
123+
124+
switch (cmd) {
125+
case RT_DEVICE_CTRL_CLR_INT:
126+
/* disable rx irq */
127+
UART_IMSC(uart->hw_base) &= ~UARTIMSC_RXIM;
128+
break;
129+
130+
case RT_DEVICE_CTRL_SET_INT:
131+
/* enable rx irq */
132+
UART_IMSC(uart->hw_base) |= UARTIMSC_RXIM;
133+
rt_hw_interrupt_umask(uart->irqno);
134+
break;
135+
}
136+
137+
return RT_EOK;
138+
}
139+
140+
static int uart_putc(struct rt_serial_device *serial, char ch)
141+
{
142+
struct hw_uart_device *uart;
143+
144+
RT_ASSERT(serial != RT_NULL);
145+
uart = (struct hw_uart_device *)serial->parent.user_data;
146+
147+
while (UART_FR(uart->hw_base) & UARTFR_TXFF);
148+
UART_DR(uart->hw_base) = ch;
149+
150+
return 1;
151+
}
152+
153+
static int uart_getc(struct rt_serial_device *serial)
154+
{
155+
int ch;
156+
struct hw_uart_device *uart;
157+
158+
RT_ASSERT(serial != RT_NULL);
159+
uart = (struct hw_uart_device *)serial->parent.user_data;
160+
161+
ch = -1;
162+
if (!(UART_FR(uart->hw_base) & UARTFR_RXFE))
163+
{
164+
ch = UART_DR(uart->hw_base) & 0xff;
165+
}
166+
167+
return ch;
168+
}
169+
170+
static const struct rt_uart_ops _uart_ops = {
171+
uart_configure,
172+
uart_control,
173+
uart_putc,
174+
uart_getc,
175+
};
176+
177+
int rt_hw_uart_init(void)
178+
{
179+
180+
rt_err_t err = RT_EOK;
181+
182+
struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
183+
184+
for (uint32_t i = 0; i < sizeof(_uart_device) / sizeof(_uart_device[0]); i++) {
185+
186+
#ifdef RT_USING_SMART
187+
_uart_device[i].hw_base = (uint32_t)rt_ioremap((void*)_uart_device[i].hw_base, 0x1000);
188+
#endif
189+
190+
_uart_device[i].serial->ops = &_uart_ops;
191+
_uart_device[i].serial->config = config;
192+
193+
/* register UART deivce */
194+
err = rt_hw_serial_register(_uart_device[i].serial,
195+
_uart_device[i].device_name,
196+
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
197+
(void*)&_uart_device[i]);
198+
rt_hw_interrupt_install(_uart_device[i].irqno, rt_hw_uart_isr, _uart_device[i].serial, _uart_device[i].device_name);
199+
/* enable Rx and Tx of UART */
200+
UART_CR(_uart_device[i].hw_base) = (1 << 0) | (1 << 8) | (1 << 9);
201+
}
202+
203+
return err;
204+
}
205+
206+
INIT_BOARD_EXPORT(rt_hw_uart_init);
207+
208+
#endif /* RT_USING_SERIAL */

‎bsp/qemu-vexpress-a9/drivers/drv_uart.h‎

Lines changed: 17 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,17 @@
1+
/*
2+
* Copyright (c) 2006-2021, RT-Thread Development Team
3+
*
4+
* SPDX-License-Identifier: Apache-2.0
5+
*
6+
* Change Logs:
7+
* Date Author Notes
8+
* 2013-03-30 Bernard the first verion
9+
* 2025-04-08 Hydevcode second version
10+
*
11+
*/
12+
#ifndef DRV_UART_H
13+
#define DRV_UART_H
14+
15+
int rt_hw_uart_init(void);
16+
17+
#endif /* DRV_UART_H */

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