| /* |
| * arch/arm/mach-ns9xxx/processor-ns9360.c |
| * |
| * Copyright (C) 2007 by Digi International Inc. |
| * All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 as published by |
| * the Free Software Foundation. |
| */ |
| #include <linux/io.h> |
| #include <linux/kernel.h> |
| |
| #include <asm/page.h> |
| #include <asm/mach/map.h> |
| #include <mach/processor-ns9360.h> |
| #include <mach/regs-sys-ns9360.h> |
| |
| void ns9360_reset(char mode) |
| { |
| u32 reg; |
| |
| reg = __raw_readl(SYS_PLL) >> 16; |
| REGSET(reg, SYS_PLL, SWC, YES); |
| __raw_writel(reg, SYS_PLL); |
| } |
| |
| #define CRYSTAL 29491200 /* Hz */ |
| unsigned long ns9360_systemclock(void) |
| { |
| u32 pll = __raw_readl(SYS_PLL); |
| return CRYSTAL * (REGGETIM(pll, SYS_PLL, ND) + 1) |
| >> REGGETIM(pll, SYS_PLL, FS); |
| } |
| |
| static struct map_desc ns9360_io_desc[] __initdata = { |
| { /* BBus */ |
| .virtual = io_p2v(0x90000000), |
| .pfn = __phys_to_pfn(0x90000000), |
| .length = 0x00700000, |
| .type = MT_DEVICE, |
| }, { /* AHB */ |
| .virtual = io_p2v(0xa0100000), |
| .pfn = __phys_to_pfn(0xa0100000), |
| .length = 0x00900000, |
| .type = MT_DEVICE, |
| }, |
| }; |
| |
| void __init ns9360_map_io(void) |
| { |
| iotable_init(ns9360_io_desc, ARRAY_SIZE(ns9360_io_desc)); |
| } |