1/*
2 * Host bridge init code for the Marvell/Galileo EV-64260-BP evaluation board
3 * with a GT64260 onboard.
4 *
5 * Author: Mark A. Greer <mgreer@mvista.com>
6 *
7 * 2001 (c) MontaVista Software, Inc. This file is licensed under
8 * the terms of the GNU General Public License version 2. This program
9 * is licensed "as is" without any warranty of any kind, whether express
10 * or implied.
11 */
12
13#include <linux/types.h>
14#include <asm/reg.h>
15#include <asm/io.h>
16#include <asm/mv64x60_defs.h>
17#include <platforms/ev64260.h>
18
19#ifdef CONFIG_SERIAL_MPSC_CONSOLE
20extern u32 mv64x60_console_baud;
21extern u32 mv64x60_mpsc_clk_src;
22extern u32 mv64x60_mpsc_clk_freq;
23#endif
24
25void
26mv64x60_board_init(void __iomem *old_base, void __iomem *new_base)
27{
28	u32	p, v;
29
30	/* DINK doesn't enable 745x timebase, so enable here (Adrian Cox) */
31	p = mfspr(SPRN_PVR);
32	p >>= 16;
33
34	/* Reasonable SWAG at a 745x PVR value */
35	if (((p & 0xfff0) == 0x8000) && (p != 0x800c)) {
36		v = mfspr(SPRN_HID0);
37		v |= HID0_TBEN;
38		mtspr(SPRN_HID0, v);
39	}
40
41#ifdef CONFIG_SERIAL_8250_CONSOLE
42	/*
43	 * Change device bus 2 window so that bootoader can do I/O thru
44	 * 8250/16550 UART that's mapped in that window.
45	 */
46	out_le32(new_base + MV64x60_CPU2DEV_2_BASE, EV64260_UART_BASE >> 20);
47	out_le32(new_base + MV64x60_CPU2DEV_2_SIZE, EV64260_UART_END >> 20);
48	__asm__ __volatile__("sync");
49#elif defined(CONFIG_SERIAL_MPSC_CONSOLE)
50	mv64x60_console_baud = EV64260_DEFAULT_BAUD;
51	mv64x60_mpsc_clk_src = EV64260_MPSC_CLK_SRC;
52	mv64x60_mpsc_clk_freq = EV64260_MPSC_CLK_FREQ;
53#endif
54}
55