This source file includes following definitions.
- uart_read
- uart_write
- uart_is_enabled
- putc
- flush
- arch_decomp_setup
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9 #include <linux/serial_reg.h>
10 #include <asm/mach-types.h>
11
12 #define FFUART_BASE (0x40100000)
13 #define BTUART_BASE (0x40200000)
14 #define STUART_BASE (0x40700000)
15
16 unsigned long uart_base;
17 unsigned int uart_shift;
18 unsigned int uart_is_pxa;
19
20 static inline unsigned char uart_read(int offset)
21 {
22 return *(volatile unsigned char *)(uart_base + (offset << uart_shift));
23 }
24
25 static inline void uart_write(unsigned char val, int offset)
26 {
27 *(volatile unsigned char *)(uart_base + (offset << uart_shift)) = val;
28 }
29
30 static inline int uart_is_enabled(void)
31 {
32
33 return uart_is_pxa ? uart_read(UART_IER) & UART_IER_UUE : 1;
34 }
35
36 static inline void putc(char c)
37 {
38 if (!uart_is_enabled())
39 return;
40
41 while (!(uart_read(UART_LSR) & UART_LSR_THRE))
42 barrier();
43
44 uart_write(c, UART_TX);
45 }
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48
49
50 static inline void flush(void)
51 {
52 }
53
54 static inline void arch_decomp_setup(void)
55 {
56
57 uart_base = FFUART_BASE;
58 uart_shift = 2;
59 uart_is_pxa = 1;
60
61 if (machine_is_littleton() || machine_is_intelmote2()
62 || machine_is_csb726() || machine_is_stargate2()
63 || machine_is_cm_x300() || machine_is_balloon3())
64 uart_base = STUART_BASE;
65
66 if (machine_is_arcom_zeus()) {
67 uart_base = 0x10000000;
68 uart_shift = 1;
69 uart_is_pxa = 0;
70 }
71 }