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/arch/ppc/boot/simple/misc-chestnut.c

https://bitbucket.org/evzijst/gittest
C | 35 lines | 15 code | 3 blank | 17 comment | 0 complexity | fcb630cd7a242b2b11cc9843f07aa296 MD5 | raw file
 1/*
 2 * arch/ppc/boot/simple/misc-chestnut.c
 3 *
 4 * Setup for the IBM Chestnut (ibm-750fxgx_eval)
 5 *
 6 * Author: Mark A. Greer <mgreer@mvista.com>
 7 *
 8 * 2005 (c) MontaVista Software, Inc. This file is licensed under
 9 * the terms of the GNU General Public License version 2. This program
10 * is licensed "as is" without any warranty of any kind, whether express
11 * or implied.
12 */
13
14#include <linux/config.h>
15#include <linux/types.h>
16#include <asm/io.h>
17#include <asm/mv64x60_defs.h>
18#include <platforms/chestnut.h>
19
20/* Not in the kernel so won't include kernel.h to get its 'max' definition */
21#define max(a,b)	(((a) > (b)) ? (a) : (b))
22
23void
24mv64x60_board_init(void __iomem *old_base, void __iomem *new_base)
25{
26#ifdef CONFIG_SERIAL_8250_CONSOLE
27	/*
28	 * Change device bus 2 window so that bootoader can do I/O thru
29	 * 8250/16550 UART that's mapped in that window.
30	 */
31	out_le32(new_base + MV64x60_CPU2DEV_2_BASE, CHESTNUT_UART_BASE >> 16);
32	out_le32(new_base + MV64x60_CPU2DEV_2_SIZE, CHESTNUT_UART_SIZE >> 16);
33	__asm__ __volatile__("sync");
34#endif
35}