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/*
* (C) Copyright 2010
* Marvell Semiconductor <www.marvell.com>
* Written-by: Prafulla Wadaskar <prafulla@marvell.com>
* Contributor: Mahavir Jain <mjain@marvell.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#include <common.h>
#include <asm/arch/cpu.h>
#include <asm/arch/armada100.h>
#define UARTCLK14745KHZ (APBC_APBCLK | APBC_FNCLK | APBC_FNCLKSEL(1))
#define SET_MRVL_ID (1<<8)
#define L2C_RAM_SEL (1<<4)
int arch_cpu_init(void)
{
u32 val;
struct armd1cpu_registers *cpuregs =
(struct armd1cpu_registers *) ARMD1_CPU_BASE;
struct armd1apb1_registers *apb1clkres =
(struct armd1apb1_registers *) ARMD1_APBC1_BASE;
struct armd1mpmu_registers *mpmu =
(struct armd1mpmu_registers *) ARMD1_MPMU_BASE;
/* set SEL_MRVL_ID bit in ARMADA100_CPU_CONF register */
val = readl(&cpuregs->cpu_conf);
val = val | SET_MRVL_ID;
writel(val, &cpuregs->cpu_conf);
/* Enable Clocks for all hardware units */
writel(0xFFFFFFFF, &mpmu->acgr);
/* Turn on AIB and AIB-APB Functional clock */
writel(APBC_APBCLK | APBC_FNCLK, &apb1clkres->aib);
/* ensure L2 cache is not mapped as SRAM */
val = readl(&cpuregs->cpu_conf);
val = val & ~(L2C_RAM_SEL);
writel(val, &cpuregs->cpu_conf);
/* Enable GPIO clock */
writel(APBC_APBCLK, &apb1clkres->gpio);
#ifdef CONFIG_I2C_MV
/* Enable general I2C clock */
writel(APBC_RST | APBC_FNCLK | APBC_APBCLK, &apb1clkres->twsi0);
writel(APBC_FNCLK | APBC_APBCLK, &apb1clkres->twsi0);
/* Enable power I2C clock */
writel(APBC_RST | APBC_FNCLK | APBC_APBCLK, &apb1clkres->twsi1);
writel(APBC_FNCLK | APBC_APBCLK, &apb1clkres->twsi1);
#endif
/*
* Enable Functional and APB clock at 14.7456MHz
* for configured UART console
*/
#if (CONFIG_SYS_NS16550_COM1 == ARMD1_UART3_BASE)
writel(UARTCLK14745KHZ, &apb1clkres->uart3);
#elif (CONFIG_SYS_NS16550_COM1 == ARMD1_UART2_BASE)
writel(UARTCLK14745KHZ, &apb1clkres->uart2);
#else
writel(UARTCLK14745KHZ, &apb1clkres->uart1);
#endif
icache_enable();
return 0;
}
#if defined(CONFIG_DISPLAY_CPUINFO)
int print_cpuinfo(void)
{
u32 id;
struct armd1cpu_registers *cpuregs =
(struct armd1cpu_registers *) ARMD1_CPU_BASE;
id = readl(&cpuregs->chip_id);
printf("SoC: Armada 88AP%X-%X\n", (id & 0xFFF), (id >> 0x10));
return 0;
}
#endif
#ifdef CONFIG_I2C_MV
void i2c_clk_enable(void)
{
}
#endif
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