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linux/arch/arm/mach-at91/at91sam9261.c
Jean-Christophe PLAGNIOL-VILLARD a27fa58117 ARM: at91: drop at91_set_serial_console 
at91_set_serial_console is used to define the default console of linux.
This is already manage by the cmdline. And if the boot loader can not be
modified you can still set it by enabling the CONFIG_CMDLINE_EXTEND option.
And then the command-line arguments provided by the boot loader will be
appended to the default kernel command string.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-04-17 11:03:46 +02:00

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8.5 KiB
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/*
* arch/arm/mach-at91/at91sam9261.c
*
* Copyright (C) 2005 SAN People
*
* 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.
*
*/
#include <linux/module.h>
#include <asm/proc-fns.h>
#include <asm/irq.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/system_misc.h>
#include <mach/cpu.h>
#include <mach/at91sam9261.h>
#include <mach/at91_pmc.h>
#include <mach/at91_rstc.h>
#include "soc.h"
#include "generic.h"
#include "clock.h"
#include "sam9_smc.h"
/* --------------------------------------------------------------------
* Clocks
* -------------------------------------------------------------------- */
/*
* The peripheral clocks.
*/
static struct clk pioA_clk = {
.name = "pioA_clk",
.pmc_mask = 1 << AT91SAM9261_ID_PIOA,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk pioB_clk = {
.name = "pioB_clk",
.pmc_mask = 1 << AT91SAM9261_ID_PIOB,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk pioC_clk = {
.name = "pioC_clk",
.pmc_mask = 1 << AT91SAM9261_ID_PIOC,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk usart0_clk = {
.name = "usart0_clk",
.pmc_mask = 1 << AT91SAM9261_ID_US0,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk usart1_clk = {
.name = "usart1_clk",
.pmc_mask = 1 << AT91SAM9261_ID_US1,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk usart2_clk = {
.name = "usart2_clk",
.pmc_mask = 1 << AT91SAM9261_ID_US2,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk mmc_clk = {
.name = "mci_clk",
.pmc_mask = 1 << AT91SAM9261_ID_MCI,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk udc_clk = {
.name = "udc_clk",
.pmc_mask = 1 << AT91SAM9261_ID_UDP,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk twi_clk = {
.name = "twi_clk",
.pmc_mask = 1 << AT91SAM9261_ID_TWI,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk spi0_clk = {
.name = "spi0_clk",
.pmc_mask = 1 << AT91SAM9261_ID_SPI0,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk spi1_clk = {
.name = "spi1_clk",
.pmc_mask = 1 << AT91SAM9261_ID_SPI1,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk ssc0_clk = {
.name = "ssc0_clk",
.pmc_mask = 1 << AT91SAM9261_ID_SSC0,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk ssc1_clk = {
.name = "ssc1_clk",
.pmc_mask = 1 << AT91SAM9261_ID_SSC1,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk ssc2_clk = {
.name = "ssc2_clk",
.pmc_mask = 1 << AT91SAM9261_ID_SSC2,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk tc0_clk = {
.name = "tc0_clk",
.pmc_mask = 1 << AT91SAM9261_ID_TC0,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk tc1_clk = {
.name = "tc1_clk",
.pmc_mask = 1 << AT91SAM9261_ID_TC1,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk tc2_clk = {
.name = "tc2_clk",
.pmc_mask = 1 << AT91SAM9261_ID_TC2,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk ohci_clk = {
.name = "ohci_clk",
.pmc_mask = 1 << AT91SAM9261_ID_UHP,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk lcdc_clk = {
.name = "lcdc_clk",
.pmc_mask = 1 << AT91SAM9261_ID_LCDC,
.type = CLK_TYPE_PERIPHERAL,
};
/* HClocks */
static struct clk hck0 = {
.name = "hck0",
.pmc_mask = AT91_PMC_HCK0,
.type = CLK_TYPE_SYSTEM,
.id = 0,
};
static struct clk hck1 = {
.name = "hck1",
.pmc_mask = AT91_PMC_HCK1,
.type = CLK_TYPE_SYSTEM,
.id = 1,
};
static struct clk *periph_clocks[] __initdata = {
&pioA_clk,
&pioB_clk,
&pioC_clk,
&usart0_clk,
&usart1_clk,
&usart2_clk,
&mmc_clk,
&udc_clk,
&twi_clk,
&spi0_clk,
&spi1_clk,
&ssc0_clk,
&ssc1_clk,
&ssc2_clk,
&tc0_clk,
&tc1_clk,
&tc2_clk,
&ohci_clk,
&lcdc_clk,
// irq0 .. irq2
};
static struct clk_lookup periph_clocks_lookups[] = {
CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.0", &spi0_clk),
CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.1", &spi1_clk),
CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.0", &tc0_clk),
CLKDEV_CON_DEV_ID("t1_clk", "atmel_tcb.0", &tc1_clk),
CLKDEV_CON_DEV_ID("t2_clk", "atmel_tcb.0", &tc2_clk),
CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc0_clk),
CLKDEV_CON_DEV_ID("pclk", "ssc.1", &ssc1_clk),
CLKDEV_CON_DEV_ID("pclk", "ssc.2", &ssc2_clk),
CLKDEV_CON_DEV_ID("hclk", "at91_ohci", &hck0),
CLKDEV_CON_ID("pioA", &pioA_clk),
CLKDEV_CON_ID("pioB", &pioB_clk),
CLKDEV_CON_ID("pioC", &pioC_clk),
};
static struct clk_lookup usart_clocks_lookups[] = {
CLKDEV_CON_DEV_ID("usart", "atmel_usart.0", &mck),
CLKDEV_CON_DEV_ID("usart", "atmel_usart.1", &usart0_clk),
CLKDEV_CON_DEV_ID("usart", "atmel_usart.2", &usart1_clk),
CLKDEV_CON_DEV_ID("usart", "atmel_usart.3", &usart2_clk),
};
/*
* The four programmable clocks.
* You must configure pin multiplexing to bring these signals out.
*/
static struct clk pck0 = {
.name = "pck0",
.pmc_mask = AT91_PMC_PCK0,
.type = CLK_TYPE_PROGRAMMABLE,
.id = 0,
};
static struct clk pck1 = {
.name = "pck1",
.pmc_mask = AT91_PMC_PCK1,
.type = CLK_TYPE_PROGRAMMABLE,
.id = 1,
};
static struct clk pck2 = {
.name = "pck2",
.pmc_mask = AT91_PMC_PCK2,
.type = CLK_TYPE_PROGRAMMABLE,
.id = 2,
};
static struct clk pck3 = {
.name = "pck3",
.pmc_mask = AT91_PMC_PCK3,
.type = CLK_TYPE_PROGRAMMABLE,
.id = 3,
};
static void __init at91sam9261_register_clocks(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
clk_register(periph_clocks[i]);
clkdev_add_table(periph_clocks_lookups,
ARRAY_SIZE(periph_clocks_lookups));
clkdev_add_table(usart_clocks_lookups,
ARRAY_SIZE(usart_clocks_lookups));
clk_register(&pck0);
clk_register(&pck1);
clk_register(&pck2);
clk_register(&pck3);
clk_register(&hck0);
clk_register(&hck1);
}
/* --------------------------------------------------------------------
* GPIO
* -------------------------------------------------------------------- */
static struct at91_gpio_bank at91sam9261_gpio[] __initdata = {
{
.id = AT91SAM9261_ID_PIOA,
.regbase = AT91SAM9261_BASE_PIOA,
}, {
.id = AT91SAM9261_ID_PIOB,
.regbase = AT91SAM9261_BASE_PIOB,
}, {
.id = AT91SAM9261_ID_PIOC,
.regbase = AT91SAM9261_BASE_PIOC,
}
};
/* --------------------------------------------------------------------
* AT91SAM9261 processor initialization
* -------------------------------------------------------------------- */
static void __init at91sam9261_map_io(void)
{
if (cpu_is_at91sam9g10())
at91_init_sram(0, AT91SAM9G10_SRAM_BASE, AT91SAM9G10_SRAM_SIZE);
else
at91_init_sram(0, AT91SAM9261_SRAM_BASE, AT91SAM9261_SRAM_SIZE);
}
static void __init at91sam9261_ioremap_registers(void)
{
at91_ioremap_shdwc(AT91SAM9261_BASE_SHDWC);
at91_ioremap_rstc(AT91SAM9261_BASE_RSTC);
at91_ioremap_ramc(0, AT91SAM9261_BASE_SDRAMC, 512);
at91sam926x_ioremap_pit(AT91SAM9261_BASE_PIT);
at91sam9_ioremap_smc(0, AT91SAM9261_BASE_SMC);
at91_ioremap_matrix(AT91SAM9261_BASE_MATRIX);
}
static void __init at91sam9261_initialize(void)
{
arm_pm_idle = at91sam9_idle;
arm_pm_restart = at91sam9_alt_restart;
at91_extern_irq = (1 << AT91SAM9261_ID_IRQ0) | (1 << AT91SAM9261_ID_IRQ1)
| (1 << AT91SAM9261_ID_IRQ2);
/* Register GPIO subsystem */
at91_gpio_init(at91sam9261_gpio, 3);
}
/* --------------------------------------------------------------------
* Interrupt initialization
* -------------------------------------------------------------------- */
/*
* The default interrupt priority levels (0 = lowest, 7 = highest).
*/
static unsigned int at91sam9261_default_irq_priority[NR_AIC_IRQS] __initdata = {
7, /* Advanced Interrupt Controller */
7, /* System Peripherals */
1, /* Parallel IO Controller A */
1, /* Parallel IO Controller B */
1, /* Parallel IO Controller C */
0,
5, /* USART 0 */
5, /* USART 1 */
5, /* USART 2 */
0, /* Multimedia Card Interface */
2, /* USB Device Port */
6, /* Two-Wire Interface */
5, /* Serial Peripheral Interface 0 */
5, /* Serial Peripheral Interface 1 */
4, /* Serial Synchronous Controller 0 */
4, /* Serial Synchronous Controller 1 */
4, /* Serial Synchronous Controller 2 */
0, /* Timer Counter 0 */
0, /* Timer Counter 1 */
0, /* Timer Counter 2 */
2, /* USB Host port */
3, /* LCD Controller */
0,
0,
0,
0,
0,
0,
0,
0, /* Advanced Interrupt Controller */
0, /* Advanced Interrupt Controller */
0, /* Advanced Interrupt Controller */
};
struct at91_init_soc __initdata at91sam9261_soc = {
.map_io = at91sam9261_map_io,
.default_irq_priority = at91sam9261_default_irq_priority,
.ioremap_registers = at91sam9261_ioremap_registers,
.register_clocks = at91sam9261_register_clocks,
.init = at91sam9261_initialize,
};
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