[mirror_ubuntu-focal-kernel.git] / include / asm-arm / arch-imx / uncompress.h

/*
 *  linux/include/asm-arm/arch-imxads/uncompress.h
 *
 *
 *
 *  Copyright (C) 1999 ARM Limited
 *  Copyright (C) Shane Nay (shane@minirl.com)
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#define UART(x) (*(volatile unsigned long *)(serial_port + (x)))

#define UART1_BASE 0x206000
#define UART2_BASE 0x207000
#define USR2 0x98
#define USR2_TXFE (1<<14)
#define TXR  0x40
#define UCR1 0x80
#define UCR1_UARTEN 1

/*
 * The following code assumes the serial port has already been
 * initialized by the bootloader.  We search for the first enabled
 * port in the most probable order.  If you didn't setup a port in
 * your bootloader then nothing will appear (which might be desired).
 *
 * This does not append a newline
 */
static void putc(int c)
{
	unsigned long serial_port;

	do {
		serial_port = UART1_BASE;
		if ( UART(UCR1) & UCR1_UARTEN )
			break;
		serial_port = UART2_BASE;
		if ( UART(UCR1) & UCR1_UARTEN )
			break;
		return;
	} while(0);

	while (!(UART(USR2) & USR2_TXFE))
		barrier();

	UART(TXR) = c;
}

static inline void flush(void)
{
}

/*
 * nothing to do
 */
#define arch_decomp_setup()

#define arch_decomp_wdog()
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/include/asm-arm/arch-imxads/uncompress.h
	3	*
	4	*
	5	*
	6	* Copyright (C) 1999 ARM Limited
	7	* Copyright (C) Shane Nay (shane@minirl.com)
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License as published by
	11	* the Free Software Foundation; either version 2 of the License, or
	12	* (at your option) any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	* GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with this program; if not, write to the Free Software
	21	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	22	*/
	23
	24	#define UART(x) ((volatile unsigned long )(serial_port + (x)))
	25
	26	#define UART1_BASE 0x206000
	27	#define UART2_BASE 0x207000
	28	#define USR2 0x98
	29	#define USR2_TXFE (1<<14)
	30	#define TXR 0x40
	31	#define UCR1 0x80
	32	#define UCR1_UARTEN 1
	33
	34	/*
	35	* The following code assumes the serial port has already been
	36	* initialized by the bootloader. We search for the first enabled
	37	* port in the most probable order. If you didn't setup a port in
	38	* your bootloader then nothing will appear (which might be desired).
	39	*
	40	* This does not append a newline
	41	*/
a081568d	42	static void putc(int c)
1da177e4 LT	43	{
	44	unsigned long serial_port;
	45
	46	do {
	47	serial_port = UART1_BASE;
	48	if ( UART(UCR1) & UCR1_UARTEN )
	49	break;
	50	serial_port = UART2_BASE;
	51	if ( UART(UCR1) & UCR1_UARTEN )
	52	break;
	53	return;
	54	} while(0);
	55
a081568d RK	56	while (!(UART(USR2) & USR2_TXFE))
a081568d RK	57	barrier();
1da177e4	58
a081568d RK	59	UART(TXR) = c;
a081568d RK	60	}
1da177e4	61
a081568d RK	62	static inline void flush(void)
a081568d RK	63	{
1da177e4 LT	64	}
	65
	66	/*
	67	* nothing to do
	68	*/
	69	#define arch_decomp_setup()
	70
	71	#define arch_decomp_wdog()