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- /*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2001, 2002, 2004 Ralf Baechle
- */
- #include <linux/init.h>
- #include <linux/console.h>
- #include <linux/kdev_t.h>
- #include <linux/major.h>
- #include <linux/termios.h>
- #include <linux/sched.h>
- #include <linux/tty.h>
- #include <linux/serial.h>
- #include <linux/serial_core.h>
- #include <asm/serial.h>
- /* SUPERIO uart register map */
- struct ja_uartregs {
- union {
- volatile u8 pad0[3];
- volatile u8 rbr; /* read only, DLAB == 0 */
- volatile u8 pad1[3];
- volatile u8 thr; /* write only, DLAB == 0 */
- volatile u8 pad2[3];
- volatile u8 dll; /* DLAB == 1 */
- } u1;
- union {
- volatile u8 pad0[3];
- volatile u8 ier; /* DLAB == 0 */
- volatile u8 pad1[3];
- volatile u8 dlm; /* DLAB == 1 */
- } u2;
- union {
- volatile u8 pad0[3];
- volatile u8 iir; /* read only */
- volatile u8 pad1[3];
- volatile u8 fcr; /* write only */
- } u3;
- volatile u8 pad0[3];
- volatile u8 iu_lcr;
- volatile u8 pad1[3];
- volatile u8 iu_mcr;
- volatile u8 pad2[3];
- volatile u8 iu_lsr;
- volatile u8 pad3[3];
- volatile u8 iu_msr;
- volatile u8 pad4[3];
- volatile u8 iu_scr;
- } ja_uregs_t;
- #define iu_rbr u1.rbr
- #define iu_thr u1.thr
- #define iu_dll u1.dll
- #define iu_ier u2.ier
- #define iu_dlm u2.dlm
- #define iu_iir u3.iir
- #define iu_fcr u3.fcr
- extern unsigned long uart_base;
- static inline struct ja_uartregs *console_uart(void)
- {
- return (struct ja_uartregs *) (uart_base + 0x23UL);
- }
- void prom_putchar(char c)
- {
- struct ja_uartregs *uart = console_uart();
- while ((uart->iu_lsr & 0x20) == 0);
- uart->iu_thr = c;
- }
- char __init prom_getchar(void)
- {
- return 0;
- }
- static void inline ja_console_probe(void)
- {
- struct uart_port up;
- /*
- * Register to interrupt zero because we share the interrupt with
- * the serial driver which we don't properly support yet.
- */
- memset(&up, 0, sizeof(up));
- up.membase = (unsigned char *) uart_base + 0x23UL;
- up.irq = JAGUAR_ATX_SERIAL1_IRQ;
- up.uartclk = JAGUAR_ATX_UART_CLK;
- up.regshift = 2;
- up.iotype = UPIO_MEM;
- up.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST;
- up.line = 0;
- if (early_serial_setup(&up))
- printk(KERN_ERR "Early serial init of port 0 failed\n");
- }
- __init void ja_setup_console(void)
- {
- ja_console_probe();
- }
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