mirror of
https://github.com/AsahiLinux/u-boot
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ce39680f7e
Provide the specific addresses for the Chip ID and Chip ID Extension registers, instead of the offset, which make it use on other chips. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Reviewed-by: Andreas Bießmann <andreas.devel@googlemail.com>
77 lines
1.5 KiB
C
77 lines
1.5 KiB
C
/*
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* (C) Copyright 2010
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* Reinhard Meyer, reinhard.meyer@emk-elektronik.de
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* (C) Copyright 2009
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* Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
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* (C) Copyright 2013
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* Bo Shen <voice.shen@atmel.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <asm/arch/hardware.h>
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#include <asm/arch/at91_pmc.h>
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#include <asm/arch/at91_pit.h>
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#include <asm/arch/at91_gpbr.h>
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#include <asm/arch/clk.h>
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#ifndef CONFIG_SYS_AT91_MAIN_CLOCK
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#define CONFIG_SYS_AT91_MAIN_CLOCK 0
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#endif
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int arch_cpu_init(void)
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{
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return at91_clock_init(CONFIG_SYS_AT91_MAIN_CLOCK);
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}
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void arch_preboot_os(void)
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{
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ulong cpiv;
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at91_pit_t *pit = (at91_pit_t *)ATMEL_BASE_PIT;
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cpiv = AT91_PIT_MR_PIV_MASK(readl(&pit->piir));
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/*
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* Disable PITC
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* Add 0x1000 to current counter to stop it faster
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* without waiting for wrapping back to 0
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*/
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writel(cpiv + 0x1000, &pit->mr);
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}
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#if defined(CONFIG_DISPLAY_CPUINFO)
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int print_cpuinfo(void)
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{
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char buf[32];
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printf("CPU: %s\n", get_cpu_name());
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printf("Crystal frequency: %8s MHz\n",
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strmhz(buf, get_main_clk_rate()));
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printf("CPU clock : %8s MHz\n",
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strmhz(buf, get_cpu_clk_rate()));
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printf("Master clock : %8s MHz\n",
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strmhz(buf, get_mck_clk_rate()));
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return 0;
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}
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#endif
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void enable_caches(void)
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{
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icache_enable();
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dcache_enable();
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}
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#define ATMEL_CHIPID_CIDR_VERSION 0x1f
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unsigned int get_chip_id(void)
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{
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return readl(ATMEL_CHIPID_CIDR) & ~ATMEL_CHIPID_CIDR_VERSION;
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}
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unsigned int get_extension_chip_id(void)
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{
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return readl(ATMEL_CHIPID_EXID);
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}
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