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pl011 uart: Add port_init code

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* Add code to initilize the uart port
* Fix uart clock
This commit is contained in:
Alexander von Gluck IV
2012-05-06 22:53:56 -05:00
parent c76127fade
commit b74906293b
4 changed files with 37 additions and 9 deletions
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headers/private/kernel/arch/arm/board/raspberry_pi/board_config.h
+2 -2
View File
@@ -24,8 +24,8 @@
#define BOARD_UART_DEBUG BOARD_UART2_BASE
#define BOARD_UART_CLOCK 125000000
/* 125Mhz, strange */
#define BOARD_UART_CLOCK 3000000
/* 3Mhz */
#endif /* _BOARD_RASPBERRY_PI_BOARD_CONFIG_H */
headers/private/kernel/arch/arm/uart_pl011.h
+11
View File
@@ -72,6 +72,17 @@
#define PL011_CR_SIREN 0x0002 // SIR enable
#define PL011_CR_UARTEN 0x0001 // UART enable
#define PL011_LCRH_SPS 0x80
#define PL01x_LCRH_WLEN_8 0x60
#define PL01x_LCRH_WLEN_7 0x40
#define PL01x_LCRH_WLEN_6 0x20
#define PL01x_LCRH_WLEN_5 0x00
#define PL01x_LCRH_FEN 0x10
#define PL01x_LCRH_STP2 0x08
#define PL01x_LCRH_EPS 0x04
#define PL01x_LCRH_PEN 0x02
#define PL01x_LCRH_BRK 0x01
// TODO: Other PL01x registers + values?