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/*
* 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()
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