| Uwe Kleine-König | 724ce5e | 2008-02-15 08:41:06 +0100 | [diff] [blame] | 1 | /* |
| 2 | * arch/arm/mach-ns9xxx/processor-ns9360.c |
| 3 | * |
| 4 | * Copyright (C) 2007 by Digi International Inc. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify it |
| 8 | * under the terms of the GNU General Public License version 2 as published by |
| 9 | * the Free Software Foundation. |
| 10 | */ |
| 11 | #include <linux/io.h> |
| 12 | #include <linux/kernel.h> |
| 13 | #include <linux/slab.h> |
| 14 | |
| 15 | #include <asm/page.h> |
| 16 | #include <asm/mach/map.h> |
| 17 | #include <asm/arch-ns9xxx/processor-ns9360.h> |
| 18 | #include <asm/arch-ns9xxx/regs-sys-ns9360.h> |
| 19 | |
| 20 | void ns9360_reset(char mode) |
| 21 | { |
| 22 | u32 reg; |
| 23 | |
| 24 | reg = __raw_readl(SYS_PLL) >> 16; |
| 25 | REGSET(reg, SYS_PLL, SWC, YES); |
| 26 | __raw_writel(reg, SYS_PLL); |
| 27 | } |
| 28 | |
| 29 | #define CRYSTAL 29491200 /* Hz */ |
| 30 | unsigned long ns9360_systemclock(void) |
| 31 | { |
| 32 | u32 pll = __raw_readl(SYS_PLL); |
| 33 | return CRYSTAL * (REGGETIM(pll, SYS_PLL, ND) + 1) |
| 34 | >> REGGETIM(pll, SYS_PLL, FS); |
| 35 | } |
| 36 | |
| 37 | static struct map_desc ns9360_io_desc[] __initdata = { |
| 38 | { /* BBus */ |
| 39 | .virtual = io_p2v(0x90000000), |
| 40 | .pfn = __phys_to_pfn(0x90000000), |
| 41 | .length = 0x00700000, |
| 42 | .type = MT_DEVICE, |
| 43 | }, { /* AHB */ |
| 44 | .virtual = io_p2v(0xa0100000), |
| 45 | .pfn = __phys_to_pfn(0xa0100000), |
| 46 | .length = 0x00900000, |
| 47 | .type = MT_DEVICE, |
| 48 | }, |
| 49 | }; |
| 50 | |
| 51 | void __init ns9360_map_io(void) |
| 52 | { |
| 53 | iotable_init(ns9360_io_desc, ARRAY_SIZE(ns9360_io_desc)); |
| 54 | } |