7ea3f5b654
driver. This mostly involves selecting the register offsets to use at runtime based on the hardware we are talking to. Submitted by: Emmanuel Vadot <manu@bidouilliste.com> Differential Revision: https://reviews.freebsd.org/D5327
190 lines
4.7 KiB
C
190 lines
4.7 KiB
C
/*-
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* Copyright (c) 2012 Ganbold Tsagaankhuu <ganbold@freebsd.org>
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* Copyright (c) 2015-2016 Emmanuel Vadot <manu@bidouilliste.com>
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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/ti/ti_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 <machine/platformvar.h>
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#include <dev/fdt/fdt_common.h>
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#include <arm/allwinner/aw_wdog.h>
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#include <arm/allwinner/allwinner_machdep.h>
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#include "platform_if.h"
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static u_int soc_type;
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static u_int soc_family;
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static int
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a10_attach(platform_t plat)
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{
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soc_type = ALLWINNERSOC_A10;
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soc_family = ALLWINNERSOC_SUN4I;
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return (0);
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}
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static int
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a20_attach(platform_t plat)
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{
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soc_type = ALLWINNERSOC_A20;
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soc_family = ALLWINNERSOC_SUN7I;
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return (0);
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}
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static int
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a31_attach(platform_t plat)
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{
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soc_type = ALLWINNERSOC_A31;
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soc_family = ALLWINNERSOC_SUN6I;
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return (0);
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}
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static int
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a31s_attach(platform_t plat)
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{
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soc_type = ALLWINNERSOC_A31S;
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soc_family = ALLWINNERSOC_SUN6I;
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return (0);
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}
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static vm_offset_t
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allwinner_lastaddr(platform_t plat)
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{
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return (arm_devmap_lastaddr());
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}
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/*
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* Set up static device mappings.
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*
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* This covers all the on-chip device with 1MB section mappings, which is good
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* for performance (uses fewer TLB entries for device access).
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*
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* XXX It also covers a block of SRAM and some GPU (mali400) stuff that maybe
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* shouldn't be device-mapped. The original code mapped a 4MB block, but
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* perhaps a 1MB block would be more appropriate.
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*/
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static int
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allwinner_devmap_init(platform_t plat)
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{
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arm_devmap_add_entry(0x01C00000, 0x00400000); /* 4MB */
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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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void
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cpu_reset()
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{
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aw_wdog_watchdog_reset();
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printf("Reset failed!\n");
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while (1);
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}
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static platform_method_t a10_methods[] = {
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PLATFORMMETHOD(platform_attach, a10_attach),
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PLATFORMMETHOD(platform_lastaddr, allwinner_lastaddr),
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PLATFORMMETHOD(platform_devmap_init, allwinner_devmap_init),
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PLATFORMMETHOD_END,
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};
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static platform_method_t a20_methods[] = {
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PLATFORMMETHOD(platform_attach, a20_attach),
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PLATFORMMETHOD(platform_lastaddr, allwinner_lastaddr),
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PLATFORMMETHOD(platform_devmap_init, allwinner_devmap_init),
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PLATFORMMETHOD_END,
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};
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static platform_method_t a31_methods[] = {
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PLATFORMMETHOD(platform_attach, a31_attach),
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PLATFORMMETHOD(platform_lastaddr, allwinner_lastaddr),
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PLATFORMMETHOD(platform_devmap_init, allwinner_devmap_init),
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PLATFORMMETHOD_END,
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};
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static platform_method_t a31s_methods[] = {
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PLATFORMMETHOD(platform_attach, a31s_attach),
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PLATFORMMETHOD(platform_lastaddr, allwinner_lastaddr),
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PLATFORMMETHOD(platform_devmap_init, allwinner_devmap_init),
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PLATFORMMETHOD_END,
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};
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u_int
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allwinner_soc_type(void)
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{
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return (soc_type);
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}
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u_int
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allwinner_soc_family(void)
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{
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return (soc_family);
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}
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FDT_PLATFORM_DEF(a10, "a10", 0, "allwinner,sun4i-a10");
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FDT_PLATFORM_DEF(a20, "a20", 0, "allwinner,sun7i-a20");
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FDT_PLATFORM_DEF(a31, "a31", 0, "allwinner,sun6i-a31");
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FDT_PLATFORM_DEF(a31s, "a31s", 0, "allwinner,sun6i-a31s");
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