2 * Copyright (C) 2011 by Vladimir Zapolskiy <vz@mleia.com>
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
21 #include <asm/arch/cpu.h>
22 #include <asm/arch/clk.h>
23 #include <asm/arch/wdt.h>
26 static struct clk_pm_regs *clk = (struct clk_pm_regs *)CLK_PM_BASE;
27 static struct wdt_regs *wdt = (struct wdt_regs *)WDT_BASE;
29 void reset_cpu(ulong addr)
31 /* Enable watchdog clock */
32 setbits_le32(&clk->timclk_ctrl, CLK_TIMCLK_WATCHDOG);
34 /* Reset pulse length is 13005 peripheral clock frames */
35 writel(13000, &wdt->pulse);
37 /* Force WDOG_RESET2 and RESOUT_N signal active */
38 writel(WDTIM_MCTRL_RESFRC2 | WDTIM_MCTRL_RESFRC1 | WDTIM_MCTRL_M_RES2,
45 #if defined(CONFIG_ARCH_CPU_INIT)
46 int arch_cpu_init(void)
49 * It might be necessary to flush data cache, if U-boot is loaded
50 * from kickstart bootloader, e.g. from S1L loader
57 #error "You have to select CONFIG_ARCH_CPU_INIT"
60 #if defined(CONFIG_DISPLAY_CPUINFO)
61 int print_cpuinfo(void)
63 printf("CPU: NXP LPC32XX\n");
64 printf("CPU clock: %uMHz\n", get_hclk_pll_rate() / 1000000);
65 printf("AHB bus clock: %uMHz\n", get_hclk_clk_rate() / 1000000);
66 printf("Peripheral clock: %uMHz\n", get_periph_clk_rate() / 1000000);