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1da177e4 LT |
1 | /* |
2 | * arch/ppc/boot/simple/misc-ev64260.c | |
3 | * | |
4 | * Host bridge init code for the Marvell/Galileo EV-64260-BP evaluation board | |
5 | * with a GT64260 onboard. | |
6 | * | |
7 | * Author: Mark A. Greer <mgreer@mvista.com> | |
8 | * | |
9 | * 2001 (c) MontaVista Software, Inc. This file is licensed under | |
10 | * the terms of the GNU General Public License version 2. This program | |
11 | * is licensed "as is" without any warranty of any kind, whether express | |
12 | * or implied. | |
13 | */ | |
14 | ||
15 | #include <linux/config.h> | |
16 | #include <linux/types.h> | |
17 | #include <asm/reg.h> | |
18 | #include <asm/io.h> | |
19 | #include <asm/mv64x60_defs.h> | |
20 | #include <platforms/ev64260.h> | |
21 | ||
22 | #ifdef CONFIG_SERIAL_MPSC_CONSOLE | |
23 | extern u32 mv64x60_console_baud; | |
24 | extern u32 mv64x60_mpsc_clk_src; | |
25 | extern u32 mv64x60_mpsc_clk_freq; | |
26 | #endif | |
27 | ||
28 | void | |
29 | mv64x60_board_init(void __iomem *old_base, void __iomem *new_base) | |
30 | { | |
31 | u32 p, v; | |
32 | ||
33 | /* DINK doesn't enable 745x timebase, so enable here (Adrian Cox) */ | |
34 | p = mfspr(SPRN_PVR); | |
35 | p >>= 16; | |
36 | ||
37 | /* Reasonable SWAG at a 745x PVR value */ | |
38 | if (((p & 0xfff0) == 0x8000) && (p != 0x800c)) { | |
39 | v = mfspr(SPRN_HID0); | |
40 | v |= HID0_TBEN; | |
41 | mtspr(SPRN_HID0, v); | |
42 | } | |
43 | ||
44 | #ifdef CONFIG_SERIAL_8250_CONSOLE | |
45 | /* | |
46 | * Change device bus 2 window so that bootoader can do I/O thru | |
47 | * 8250/16550 UART that's mapped in that window. | |
48 | */ | |
49 | out_le32(new_base + MV64x60_CPU2DEV_2_BASE, EV64260_UART_BASE >> 20); | |
50 | out_le32(new_base + MV64x60_CPU2DEV_2_SIZE, EV64260_UART_END >> 20); | |
51 | __asm__ __volatile__("sync"); | |
52 | #elif defined(CONFIG_SERIAL_MPSC_CONSOLE) | |
53 | mv64x60_console_baud = EV64260_DEFAULT_BAUD; | |
54 | mv64x60_mpsc_clk_src = EV64260_MPSC_CLK_SRC; | |
55 | mv64x60_mpsc_clk_freq = EV64260_MPSC_CLK_FREQ; | |
56 | #endif | |
57 | } |