1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
107 lines
2.3 KiB
C
107 lines
2.3 KiB
C
/*
|
|
* 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 = ASYNC_BOOT_AUTOCONF | ASYNC_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();
|
|
}
|