1*83d290c5STom Rini // SPDX-License-Identifier: GPL-2.0+ 262011840SMasahiro Yamada /* 362011840SMasahiro Yamada * (C) Copyright 2010 462011840SMasahiro Yamada * Reinhard Meyer, reinhard.meyer@emk-elektronik.de 562011840SMasahiro Yamada * (C) Copyright 2009 662011840SMasahiro Yamada * Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> 762011840SMasahiro Yamada */ 862011840SMasahiro Yamada 962011840SMasahiro Yamada #include <common.h> 1062011840SMasahiro Yamada #include <asm/io.h> 1162011840SMasahiro Yamada #include <asm/arch/hardware.h> 1262011840SMasahiro Yamada #include <asm/arch/at91_pit.h> 1362011840SMasahiro Yamada #include <asm/arch/at91_gpbr.h> 1462011840SMasahiro Yamada #include <asm/arch/clk.h> 1562011840SMasahiro Yamada 1662011840SMasahiro Yamada #ifndef CONFIG_SYS_AT91_MAIN_CLOCK 1762011840SMasahiro Yamada #define CONFIG_SYS_AT91_MAIN_CLOCK 0 1862011840SMasahiro Yamada #endif 1962011840SMasahiro Yamada arch_cpu_init(void)2062011840SMasahiro Yamadaint arch_cpu_init(void) 2162011840SMasahiro Yamada { 2262011840SMasahiro Yamada return at91_clock_init(CONFIG_SYS_AT91_MAIN_CLOCK); 2362011840SMasahiro Yamada } 2462011840SMasahiro Yamada arch_preboot_os(void)2562011840SMasahiro Yamadavoid arch_preboot_os(void) 2662011840SMasahiro Yamada { 2762011840SMasahiro Yamada ulong cpiv; 2862011840SMasahiro Yamada at91_pit_t *pit = (at91_pit_t *) ATMEL_BASE_PIT; 2962011840SMasahiro Yamada 3062011840SMasahiro Yamada cpiv = AT91_PIT_MR_PIV_MASK(readl(&pit->piir)); 3162011840SMasahiro Yamada 3262011840SMasahiro Yamada /* 3362011840SMasahiro Yamada * Disable PITC 3462011840SMasahiro Yamada * Add 0x1000 to current counter to stop it faster 3562011840SMasahiro Yamada * without waiting for wrapping back to 0 3662011840SMasahiro Yamada */ 3762011840SMasahiro Yamada writel(cpiv + 0x1000, &pit->mr); 3862011840SMasahiro Yamada } 3962011840SMasahiro Yamada 4062011840SMasahiro Yamada #if defined(CONFIG_DISPLAY_CPUINFO) print_cpuinfo(void)4162011840SMasahiro Yamadaint print_cpuinfo(void) 4262011840SMasahiro Yamada { 4380402f34SHeiko Schocher char __maybe_unused buf[32]; 4462011840SMasahiro Yamada 4562011840SMasahiro Yamada printf("CPU: %s\n", ATMEL_CPU_NAME); 4662011840SMasahiro Yamada printf("Crystal frequency: %8s MHz\n", 4762011840SMasahiro Yamada strmhz(buf, get_main_clk_rate())); 4862011840SMasahiro Yamada printf("CPU clock : %8s MHz\n", 4962011840SMasahiro Yamada strmhz(buf, get_cpu_clk_rate())); 5062011840SMasahiro Yamada printf("Master clock : %8s MHz\n", 5162011840SMasahiro Yamada strmhz(buf, get_mck_clk_rate())); 5262011840SMasahiro Yamada 5362011840SMasahiro Yamada return 0; 5462011840SMasahiro Yamada } 5562011840SMasahiro Yamada #endif 56