150 lines
3.6 KiB
C
150 lines
3.6 KiB
C
/*-
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* Copyright (c) 2011 Damjan Marion.
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* Copyright (c) 1994-1998 Mark Brinicombe.
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* Copyright (c) 1994 Brini.
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* All rights reserved.
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*
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* This code is derived from software written for Brini by Mark Brinicombe
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: FreeBSD: //depot/projects/arm/src/sys/arm/mv/mv_machdep.c
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*/
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#include "opt_ddb.h"
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#include "opt_platform.h"
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#define _ARM32_BUS_DMA_PRIVATE
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <machine/bus.h>
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#include <machine/devmap.h>
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#include <machine/machdep.h>
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#include <dev/fdt/fdt_common.h>
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#define TEGRA2_CLK_RST_PA_BASE 0x60006000
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#define TEGRA2_CLK_RST_OSC_FREQ_DET_REG 0x58
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#define TEGRA2_CLK_RST_OSC_FREQ_DET_STAT_REG 0x5C
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#define OSC_FREQ_DET_TRIG (1U<<31)
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#define OSC_FREQ_DET_BUSY (1U<<31)
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#if 0
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static int
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tegra2_osc_freq_detect(void)
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{
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bus_space_handle_t bsh;
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uint32_t c;
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uint32_t r=0;
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int i=0;
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struct {
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uint32_t val;
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uint32_t freq;
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} freq_det_cnts[] = {
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{ 732, 12000000 },
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{ 794, 13000000 },
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{1172, 19200000 },
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{1587, 26000000 },
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{ -1, 0 },
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};
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printf("Measuring...\n");
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bus_space_map(fdtbus_bs_tag,TEGRA2_CLK_RST_PA_BASE, 0x1000, 0, &bsh);
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bus_space_write_4(fdtbus_bs_tag, bsh, TEGRA2_CLK_RST_OSC_FREQ_DET_REG,
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OSC_FREQ_DET_TRIG | 1 );
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do {} while (bus_space_read_4(fdtbus_bs_tag, bsh,
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TEGRA2_CLK_RST_OSC_FREQ_DET_STAT_REG) & OSC_FREQ_DET_BUSY);
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c = bus_space_read_4(fdtbus_bs_tag, bsh, TEGRA2_CLK_RST_OSC_FREQ_DET_STAT_REG);
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while (freq_det_cnts[i].val > 0) {
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if (((freq_det_cnts[i].val - 3) < c) && (c < (freq_det_cnts[i].val + 3)))
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r = freq_det_cnts[i].freq;
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i++;
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}
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printf("c=%u r=%u\n",c,r );
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bus_space_free(fdtbus_bs_tag, bsh, 0x1000);
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return r;
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}
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#endif
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vm_offset_t
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initarm_lastaddr(void)
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{
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return (arm_devmap_lastaddr());
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}
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void
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initarm_early_init(void)
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{
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}
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void
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initarm_gpio_init(void)
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{
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}
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void
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initarm_late_init(void)
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{
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}
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/*
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* Add a static mapping for the register range that includes the debug uart.
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* It's not clear this is needed, but the original code established this mapping
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* before conversion to the newer arm_devmap_add_entry() routine.
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*/
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int
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initarm_devmap_init(void)
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{
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arm_devmap_add_entry(0x70000000, 0x00100000);
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return (0);
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}
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struct arm32_dma_range *
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bus_dma_get_range(void)
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{
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return (NULL);
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}
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int
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bus_dma_get_range_nb(void)
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{
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return (0);
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}
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