/*-
* Copyright (c) 2011 Damjan Marion.
* Copyright (c) 1994-1998 Mark Brinicombe.
* Copyright (c) 1994 Brini.
* All rights reserved.
*
* This code is derived from software written for Brini by Mark Brinicombe
*
* 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 THE 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 THE 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.
*
* from: FreeBSD: //depot/projects/arm/src/sys/arm/mv/mv_machdep.c
*/
#include "opt_ddb.h"
#include "opt_platform.h"
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#define _ARM32_BUS_DMA_PRIVATE
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/bus.h>
#include <machine/devmap.h>
#include <machine/machdep.h>
#include <machine/platform.h>
#include <dev/fdt/fdt_common.h>
#define TEGRA2_CLK_RST_PA_BASE 0x60006000
#define TEGRA2_CLK_RST_OSC_FREQ_DET_REG 0x58
#define TEGRA2_CLK_RST_OSC_FREQ_DET_STAT_REG 0x5C
#define OSC_FREQ_DET_TRIG (1U<<31)
#define OSC_FREQ_DET_BUSY (1U<<31)
#if 0
static int
tegra2_osc_freq_detect(void)
{
bus_space_handle_t bsh;
uint32_t c;
uint32_t r=0;
int i=0;
struct {
uint32_t val;
uint32_t freq;
} freq_det_cnts[] = {
{ 732, 12000000 },
{ 794, 13000000 },
{1172, 19200000 },
{1587, 26000000 },
{ -1, 0 },
};
printf("Measuring...\n");
bus_space_map(fdtbus_bs_tag,TEGRA2_CLK_RST_PA_BASE, 0x1000, 0, &bsh);
bus_space_write_4(fdtbus_bs_tag, bsh, TEGRA2_CLK_RST_OSC_FREQ_DET_REG,
OSC_FREQ_DET_TRIG | 1 );
do {} while (bus_space_read_4(fdtbus_bs_tag, bsh,
TEGRA2_CLK_RST_OSC_FREQ_DET_STAT_REG) & OSC_FREQ_DET_BUSY);
c = bus_space_read_4(fdtbus_bs_tag, bsh, TEGRA2_CLK_RST_OSC_FREQ_DET_STAT_REG);
while (freq_det_cnts[i].val > 0) {
if (((freq_det_cnts[i].val - 3) < c) && (c < (freq_det_cnts[i].val + 3)))
r = freq_det_cnts[i].freq;
i++;
}
printf("c=%u r=%u\n",c,r );
bus_space_free(fdtbus_bs_tag, bsh, 0x1000);
return r;
}
#endif
vm_offset_t
platform_lastaddr(void)
{
return (arm_devmap_lastaddr());
}
void
platform_probe_and_attach(void)
{
}
void
platform_gpio_init(void)
{
}
void
platform_late_init(void)
{
}
/*
* Add a static mapping for the register range that includes the debug uart.
* It's not clear this is needed, but the original code established this mapping
* before conversion to the newer arm_devmap_add_entry() routine.
*/
int
platform_devmap_init(void)
{
arm_devmap_add_entry(0x70000000, 0x00100000);
return (0);
}
struct arm32_dma_range *
bus_dma_get_range(void)
{
return (NULL);
}
int
bus_dma_get_range_nb(void)
{
return (0);
}
