218 lines
6.5 KiB
C
218 lines
6.5 KiB
C
/*-
|
|
* Copyright (c) 2005 Olivier Houchard. All rights reserved.
|
|
* Copyright (c) 2010 Greg Ansley. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/module.h>
|
|
|
|
#define _ARM32_BUS_DMA_PRIVATE
|
|
#include <machine/bus.h>
|
|
|
|
#include <arm/at91/at91var.h>
|
|
#include <arm/at91/at91reg.h>
|
|
#include <arm/at91/at91soc.h>
|
|
#include <arm/at91/at91_aicreg.h>
|
|
#include <arm/at91/at91sam9260reg.h>
|
|
#include <arm/at91/at91_pitreg.h>
|
|
#include <arm/at91/at91_pmcreg.h>
|
|
#include <arm/at91/at91_pmcvar.h>
|
|
#include <arm/at91/at91_rstreg.h>
|
|
|
|
/*
|
|
* Standard priority levels for the system. 0 is lowest and 7 is highest.
|
|
* These values are the ones Atmel uses for its Linux port
|
|
*/
|
|
static const int at91_irq_prio[32] =
|
|
{
|
|
7, /* Advanced Interrupt Controller */
|
|
7, /* System Peripherals */
|
|
1, /* Parallel IO Controller A */
|
|
1, /* Parallel IO Controller B */
|
|
1, /* Parallel IO Controller C */
|
|
0, /* Analog-to-Digital Converter */
|
|
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 */
|
|
5, /* Serial Synchronous Controller */
|
|
0, /* (reserved) */
|
|
0, /* (reserved) */
|
|
0, /* Timer Counter 0 */
|
|
0, /* Timer Counter 1 */
|
|
0, /* Timer Counter 2 */
|
|
2, /* USB Host port */
|
|
3, /* Ethernet */
|
|
0, /* Image Sensor Interface */
|
|
5, /* USART 3 */
|
|
5, /* USART 4 */
|
|
5, /* USART 5 */
|
|
0, /* Timer Counter 3 */
|
|
0, /* Timer Counter 4 */
|
|
0, /* Timer Counter 5 */
|
|
0, /* Advanced Interrupt Controller IRQ0 */
|
|
0, /* Advanced Interrupt Controller IRQ1 */
|
|
0, /* Advanced Interrupt Controller IRQ2 */
|
|
};
|
|
|
|
static const uint32_t at91_pio_base[] = {
|
|
AT91SAM9260_PIOA_BASE,
|
|
AT91SAM9260_PIOB_BASE,
|
|
AT91SAM9260_PIOC_BASE,
|
|
};
|
|
|
|
#define DEVICE(_name, _id, _unit) \
|
|
{ \
|
|
_name, _unit, \
|
|
AT91SAM9260_ ## _id ##_BASE, \
|
|
AT91SAM9260_ ## _id ## _SIZE, \
|
|
AT91SAM9260_IRQ_ ## _id \
|
|
}
|
|
|
|
static const struct cpu_devs at91_devs[] =
|
|
{
|
|
DEVICE("at91_aic", AIC, 0),
|
|
DEVICE("at91_pmc", PMC, 0),
|
|
DEVICE("at91_wdt", WDT, 0),
|
|
DEVICE("at91_rst", RSTC, 0),
|
|
DEVICE("at91_pit", PIT, 0),
|
|
DEVICE("at91_pio", PIOA, 0),
|
|
DEVICE("at91_pio", PIOB, 1),
|
|
DEVICE("at91_pio", PIOC, 2),
|
|
DEVICE("at91_twi", TWI, 0),
|
|
DEVICE("at91_mci", MCI, 0),
|
|
DEVICE("uart", DBGU, 0),
|
|
DEVICE("uart", USART0, 1),
|
|
DEVICE("uart", USART1, 2),
|
|
DEVICE("uart", USART2, 3),
|
|
DEVICE("uart", USART3, 4),
|
|
DEVICE("uart", USART4, 5),
|
|
DEVICE("uart", USART5, 6),
|
|
DEVICE("spi", SPI0, 0),
|
|
DEVICE("spi", SPI1, 1),
|
|
DEVICE("ate", EMAC, 0),
|
|
DEVICE("macb", EMAC, 0),
|
|
DEVICE("nand", NAND, 0),
|
|
DEVICE("ohci", OHCI, 0),
|
|
{ 0, 0, 0, 0, 0 }
|
|
};
|
|
|
|
/*
|
|
* The following is unused currently since we don't ever set the PLLA
|
|
* frequency of the device.
|
|
*/
|
|
static uint32_t
|
|
at91_pll_outa(int freq)
|
|
{
|
|
uint32_t outa = 0;
|
|
|
|
/*
|
|
* Set OUTA, per the data sheet. See Table 40-15 titled
|
|
* PLLA Characteristics in the SAM9260 doc.
|
|
*/
|
|
|
|
if (freq > 155000000)
|
|
outa = 2 << 14;
|
|
return ((1 << 29) | outa);
|
|
}
|
|
|
|
static uint32_t
|
|
at91_pll_outb(int freq)
|
|
{
|
|
|
|
return (1 << 14);
|
|
}
|
|
|
|
static void
|
|
at91_clock_init(void)
|
|
{
|
|
struct at91_pmc_clock *clk;
|
|
|
|
/* Update USB device port clock info */
|
|
clk = at91_pmc_clock_ref("udpck");
|
|
clk->pmc_mask = PMC_SCER_UDP_SAM9;
|
|
at91_pmc_clock_deref(clk);
|
|
|
|
/* Update USB host port clock info */
|
|
clk = at91_pmc_clock_ref("uhpck");
|
|
clk->pmc_mask = PMC_SCER_UHP_SAM9;
|
|
at91_pmc_clock_deref(clk);
|
|
|
|
/* Each SOC has different PLL contraints */
|
|
clk = at91_pmc_clock_ref("plla");
|
|
clk->pll_min_in = SAM9260_PLL_A_MIN_IN_FREQ; /* 1 MHz */
|
|
clk->pll_max_in = SAM9260_PLL_A_MAX_IN_FREQ; /* 32 MHz */
|
|
clk->pll_min_out = SAM9260_PLL_A_MIN_OUT_FREQ; /* 80 MHz */
|
|
clk->pll_max_out = SAM9260_PLL_A_MAX_OUT_FREQ; /* 240 MHz */
|
|
clk->pll_mul_shift = SAM9260_PLL_A_MUL_SHIFT;
|
|
clk->pll_mul_mask = SAM9260_PLL_A_MUL_MASK;
|
|
clk->pll_div_shift = SAM9260_PLL_A_DIV_SHIFT;
|
|
clk->pll_div_mask = SAM9260_PLL_A_DIV_MASK;
|
|
clk->set_outb = at91_pll_outa;
|
|
at91_pmc_clock_deref(clk);
|
|
|
|
/*
|
|
* Fudge MAX pll in frequence down below 3.0 MHz to ensure
|
|
* PMC alogrithm choose the divisor that causes the input clock
|
|
* to be near the optimal 2 MHz per datasheet. We know
|
|
* we are going to be using this for the USB clock at 96 MHz.
|
|
* Causes no extra frequency deviation for all recommended crystal
|
|
* values. See Note 1, table 40-16 SAM9260 doc.
|
|
*/
|
|
clk = at91_pmc_clock_ref("pllb");
|
|
clk->pll_min_in = SAM9260_PLL_B_MIN_IN_FREQ; /* 1 MHz */
|
|
clk->pll_max_in = 2999999; /* ~3 MHz */
|
|
clk->pll_min_out = SAM9260_PLL_B_MIN_OUT_FREQ; /* 70 MHz */
|
|
clk->pll_max_out = SAM9260_PLL_B_MAX_OUT_FREQ; /* 130 MHz */
|
|
clk->pll_mul_shift = SAM9260_PLL_B_MUL_SHIFT;
|
|
clk->pll_mul_mask = SAM9260_PLL_B_MUL_MASK;
|
|
clk->pll_div_shift = SAM9260_PLL_B_DIV_SHIFT;
|
|
clk->pll_div_mask = SAM9260_PLL_B_DIV_MASK;
|
|
clk->set_outb = at91_pll_outb;
|
|
at91_pmc_clock_deref(clk);
|
|
}
|
|
|
|
static struct at91_soc_data soc_data = {
|
|
.soc_delay = at91_pit_delay,
|
|
.soc_reset = at91_rst_cpu_reset,
|
|
.soc_clock_init = at91_clock_init,
|
|
.soc_irq_prio = at91_irq_prio,
|
|
.soc_children = at91_devs,
|
|
.soc_pio_base = at91_pio_base,
|
|
.soc_pio_count = nitems(at91_pio_base),
|
|
};
|
|
|
|
AT91_SOC(AT91_T_SAM9260, &soc_data);
|