93 lines
2.3 KiB
C
93 lines
2.3 KiB
C
/*
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* (C) Copyright 2010
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* Marvell Semiconductor <www.marvell.com>
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* Written-by: Prafulla Wadaskar <prafulla@marvell.com>
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* Contributor: Mahavir Jain <mjain@marvell.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/arch/cpu.h>
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#include <asm/arch/armada100.h>
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#define UARTCLK14745KHZ (APBC_APBCLK | APBC_FNCLK | APBC_FNCLKSEL(1))
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#define SET_MRVL_ID (1<<8)
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#define L2C_RAM_SEL (1<<4)
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int arch_cpu_init(void)
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{
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u32 val;
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struct armd1cpu_registers *cpuregs =
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(struct armd1cpu_registers *) ARMD1_CPU_BASE;
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struct armd1apb1_registers *apb1clkres =
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(struct armd1apb1_registers *) ARMD1_APBC1_BASE;
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struct armd1mpmu_registers *mpmu =
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(struct armd1mpmu_registers *) ARMD1_MPMU_BASE;
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/* set SEL_MRVL_ID bit in ARMADA100_CPU_CONF register */
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val = readl(&cpuregs->cpu_conf);
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val = val | SET_MRVL_ID;
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writel(val, &cpuregs->cpu_conf);
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/* Enable Clocks for all hardware units */
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writel(0xFFFFFFFF, &mpmu->acgr);
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/* Turn on AIB and AIB-APB Functional clock */
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writel(APBC_APBCLK | APBC_FNCLK, &apb1clkres->aib);
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/* ensure L2 cache is not mapped as SRAM */
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val = readl(&cpuregs->cpu_conf);
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val = val & ~(L2C_RAM_SEL);
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writel(val, &cpuregs->cpu_conf);
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/* Enable GPIO clock */
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writel(APBC_APBCLK, &apb1clkres->gpio);
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#ifdef CONFIG_I2C_MV
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/* Enable general I2C clock */
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writel(APBC_RST | APBC_FNCLK | APBC_APBCLK, &apb1clkres->twsi0);
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writel(APBC_FNCLK | APBC_APBCLK, &apb1clkres->twsi0);
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/* Enable power I2C clock */
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writel(APBC_RST | APBC_FNCLK | APBC_APBCLK, &apb1clkres->twsi1);
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writel(APBC_FNCLK | APBC_APBCLK, &apb1clkres->twsi1);
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#endif
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/*
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* Enable Functional and APB clock at 14.7456MHz
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* for configured UART console
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*/
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#if (CONFIG_SYS_NS16550_COM1 == ARMD1_UART3_BASE)
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writel(UARTCLK14745KHZ, &apb1clkres->uart3);
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#elif (CONFIG_SYS_NS16550_COM1 == ARMD1_UART2_BASE)
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writel(UARTCLK14745KHZ, &apb1clkres->uart2);
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#else
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writel(UARTCLK14745KHZ, &apb1clkres->uart1);
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#endif
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icache_enable();
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return 0;
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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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u32 id;
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struct armd1cpu_registers *cpuregs =
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(struct armd1cpu_registers *) ARMD1_CPU_BASE;
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id = readl(&cpuregs->chip_id);
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printf("SoC: Armada 88AP%X-%X\n", (id & 0xFFF), (id >> 0x10));
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return 0;
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}
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#endif
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#ifdef CONFIG_I2C_MV
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void i2c_clk_enable(void)
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{
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}
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#endif
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