serial: Support an early UART for debugging

[karo-tx-uboot.git] / drivers / serial / altera_uart.c

diff --git a/drivers/serial/altera_uart.c b/drivers/serial/altera_uart.c
index d620528e3e7ead1a6f67a6584e9d40329445eb34..d6b14844d67e519a3e40064b2842cf8c3da54b4e 100644 (file)
--- a/drivers/serial/altera_uart.c
+++ b/drivers/serial/altera_uart.c
@@ -9,10 +9,47 @@
 #include <common.h>
 #include <watchdog.h>
 #include <asm/io.h>
-#include <nios2-io.h>
 #include <linux/compiler.h>
 #include <serial.h>
 
+typedef volatile struct {
+       unsigned        rxdata;         /* Rx data reg */
+       unsigned        txdata;         /* Tx data reg */
+       unsigned        status;         /* Status reg */
+       unsigned        control;        /* Control reg */
+       unsigned        divisor;        /* Baud rate divisor reg */
+       unsigned        endofpacket;    /* End-of-packet reg */
+} nios_uart_t;
+
+/* status register */
+#define NIOS_UART_PE           (1 << 0)        /* parity error */
+#define NIOS_UART_FE           (1 << 1)        /* frame error */
+#define NIOS_UART_BRK          (1 << 2)        /* break detect */
+#define NIOS_UART_ROE          (1 << 3)        /* rx overrun */
+#define NIOS_UART_TOE          (1 << 4)        /* tx overrun */
+#define NIOS_UART_TMT          (1 << 5)        /* tx empty */
+#define NIOS_UART_TRDY         (1 << 6)        /* tx ready */
+#define NIOS_UART_RRDY         (1 << 7)        /* rx ready */
+#define NIOS_UART_E            (1 << 8)        /* exception */
+#define NIOS_UART_DCTS         (1 << 10)       /* cts change */
+#define NIOS_UART_CTS          (1 << 11)       /* cts */
+#define NIOS_UART_EOP          (1 << 12)       /* eop detected */
+
+/* control register */
+#define NIOS_UART_IPE          (1 << 0)        /* parity error int ena*/
+#define NIOS_UART_IFE          (1 << 1)        /* frame error int ena */
+#define NIOS_UART_IBRK         (1 << 2)        /* break detect int ena */
+#define NIOS_UART_IROE         (1 << 3)        /* rx overrun int ena */
+#define NIOS_UART_ITOE         (1 << 4)        /* tx overrun int ena */
+#define NIOS_UART_ITMT         (1 << 5)        /* tx empty int ena */
+#define NIOS_UART_ITRDY                (1 << 6)        /* tx ready int ena */
+#define NIOS_UART_IRRDY                (1 << 7)        /* rx ready int ena */
+#define NIOS_UART_IE           (1 << 8)        /* exception int ena */
+#define NIOS_UART_TBRK         (1 << 9)        /* transmit break */
+#define NIOS_UART_IDCTS                (1 << 10)       /* cts change int ena */
+#define NIOS_UART_RTS          (1 << 11)       /* rts */
+#define NIOS_UART_IEOP         (1 << 12)       /* eop detected int ena */
+
 DECLARE_GLOBAL_DATA_PTR;
 
 /*------------------------------------------------------------------