You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
83 lines
1.9 KiB
83 lines
1.9 KiB
20 years ago
|
/*
|
||
|
|
* linux/include/asm-arm/arch-omap/uncompress.h
|
||
|
|
*
|
||
|
|
* Serial port stubs for kernel decompress status messages
|
||
|
|
*
|
||
|
|
* Initially based on:
|
||
|
|
* linux-2.4.15-rmk1-dsplinux1.6/include/asm-arm/arch-omap1510/uncompress.h
|
||
|
|
* Copyright (C) 2000 RidgeRun, Inc.
|
||
|
|
* Author: Greg Lonnon <glonnon@ridgerun.com>
|
||
|
|
*
|
||
|
|
* Rewritten by:
|
||
|
|
* Author: <source@mvista.com>
|
||
|
|
* 2004 (c) MontaVista Software, Inc.
|
||
|
|
*
|
||
|
|
* This file is licensed under the terms of the GNU General Public License
|
||
|
|
* version 2. This program is licensed "as is" without any warranty of any
|
||
|
|
* kind, whether express or implied.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/config.h>
|
||
|
|
#include <linux/types.h>
|
||
|
|
#include <linux/serial_reg.h>
|
||
|
|
#include <asm/arch/hardware.h>
|
||
|
|
|
||
|
|
unsigned int system_rev;
|
||
|
|
|
||
|
|
#define UART_OMAP_MDR1 0x08 /* mode definition register */
|
||
|
|
#define OMAP_ID_730 0x355F
|
||
|
|
#define ID_MASK 0x7fff
|
||
|
|
#define check_port(base, shift) ((base[UART_OMAP_MDR1 << shift] & 7) == 0)
|
||
|
|
#define omap_get_id() ((*(volatile unsigned int *)(0xfffed404)) >> 12) & ID_MASK
|
||
|
|
|
||
|
|
static void
|
||
|
|
putstr(const char *s)
|
||
|
|
{
|
||
|
|
volatile u8 * uart = 0;
|
||
|
|
int shift;
|
||
|
|
|
||
|
|
#ifdef CONFIG_OMAP_LL_DEBUG_UART3
|
||
|
|
uart = (volatile u8 *)(OMAP_UART3_BASE);
|
||
|
|
#elif CONFIG_OMAP_LL_DEBUG_UART2
|
||
|
|
uart = (volatile u8 *)(OMAP_UART2_BASE);
|
||
|
|
#else
|
||
|
|
uart = (volatile u8 *)(OMAP_UART1_BASE);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* Determine which serial port to use */
|
||
|
|
do {
|
||
|
|
/* MMU is not on, so cpu_is_omapXXXX() won't work here */
|
||
|
|
unsigned int omap_id = omap_get_id();
|
||
|
|
|
||
|
|
if (omap_id == OMAP_ID_730)
|
||
|
|
shift = 0;
|
||
|
|
else
|
||
|
|
shift = 2;
|
||
|
|
|
||
|
|
if (check_port(uart, shift))
|
||
|
|
break;
|
||
|
|
/* Silent boot if no serial ports are enabled. */
|
||
|
|
return;
|
||
|
|
} while (0);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Now, xmit each character
|
||
|
|
*/
|
||
|
|
while (*s) {
|
||
|
|
while (!(uart[UART_LSR << shift] & UART_LSR_THRE))
|
||
|
|
barrier();
|
||
|
|
uart[UART_TX << shift] = *s;
|
||
|
|
if (*s++ == '\n') {
|
||
|
|
while (!(uart[UART_LSR << shift] & UART_LSR_THRE))
|
||
|
|
barrier();
|
||
|
|
uart[UART_TX << shift] = '\r';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* nothing to do
|
||
|
|
*/
|
||
|
|
#define arch_decomp_setup()
|
||
|
|
#define arch_decomp_wdog()
|