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freebsd-dev/sys/arm/allwinner/aw_machdep.c
Emmanuel Vadot 837db84723 uart_snps: Add early printf support 
Move the allwinner early printf support to the snps driver as it
should work with all implementation.
While here add instruction for enabling it on 64bits SoCs.
2018-05-01 13:57:08 +00:00

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/*-
* Copyright (c) 2012 Ganbold Tsagaankhuu <ganbold@freebsd.org>
* Copyright (c) 2015-2016 Emmanuel Vadot <manu@freebsd.org>
* 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/ti/ti_machdep.c
*/
#include "opt_ddb.h"
#include "opt_platform.h"
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/devmap.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/bus.h>
#include <machine/machdep.h>
#include <machine/platformvar.h>
#include <arm/allwinner/aw_mp.h>
#include <arm/allwinner/aw_wdog.h>
#include <arm/allwinner/aw_machdep.h>
#include "platform_if.h"
static platform_attach_t a10_attach;
static platform_attach_t a13_attach;
static platform_attach_t a20_attach;
static platform_attach_t a31_attach;
static platform_attach_t a31s_attach;
static platform_attach_t a83t_attach;
static platform_attach_t h3_attach;
static platform_devmap_init_t allwinner_devmap_init;
static platform_cpu_reset_t allwinner_cpu_reset;
static u_int soc_type;
static u_int soc_family;
static int
a10_attach(platform_t plat)
{
soc_type = ALLWINNERSOC_A10;
soc_family = ALLWINNERSOC_SUN4I;
return (0);
}
static int
a13_attach(platform_t plat)
{
soc_type = ALLWINNERSOC_A13;
soc_family = ALLWINNERSOC_SUN5I;
return (0);
}
static int
a20_attach(platform_t plat)
{
soc_type = ALLWINNERSOC_A20;
soc_family = ALLWINNERSOC_SUN7I;
return (0);
}
static int
a31_attach(platform_t plat)
{
soc_type = ALLWINNERSOC_A31;
soc_family = ALLWINNERSOC_SUN6I;
return (0);
}
static int
a31s_attach(platform_t plat)
{
soc_type = ALLWINNERSOC_A31S;
soc_family = ALLWINNERSOC_SUN6I;
return (0);
}
static int
a33_attach(platform_t plat)
{
soc_type = ALLWINNERSOC_A33;
soc_family = ALLWINNERSOC_SUN8I;
return (0);
}
static int
a83t_attach(platform_t plat)
{
soc_type = ALLWINNERSOC_A83T;
soc_family = ALLWINNERSOC_SUN8I;
return (0);
}
static int
h3_attach(platform_t plat)
{
soc_type = ALLWINNERSOC_H3;
soc_family = ALLWINNERSOC_SUN8I;
return (0);
}
/*
* Set up static device mappings.
*
* This covers all the on-chip device with 1MB section mappings, which is good
* for performance (uses fewer TLB entries for device access).
*
* XXX It also covers a block of SRAM and some GPU (mali400) stuff that maybe
* shouldn't be device-mapped. The original code mapped a 4MB block, but
* perhaps a 1MB block would be more appropriate.
*/
static int
allwinner_devmap_init(platform_t plat)
{
devmap_add_entry(0x01C00000, 0x00400000); /* 4MB */
return (0);
}
static void
allwinner_cpu_reset(platform_t plat)
{
aw_wdog_watchdog_reset();
printf("Reset failed!\n");
while (1);
}
#if defined(SOC_ALLWINNER_A10)
static platform_method_t a10_methods[] = {
PLATFORMMETHOD(platform_attach, a10_attach),
PLATFORMMETHOD(platform_devmap_init, allwinner_devmap_init),
PLATFORMMETHOD(platform_cpu_reset, allwinner_cpu_reset),
PLATFORMMETHOD_END,
};
FDT_PLATFORM_DEF(a10, "a10", 0, "allwinner,sun4i-a10", 200);
#endif
#if defined(SOC_ALLWINNER_A13)
static platform_method_t a13_methods[] = {
PLATFORMMETHOD(platform_attach, a13_attach),
PLATFORMMETHOD(platform_devmap_init, allwinner_devmap_init),
PLATFORMMETHOD(platform_cpu_reset, allwinner_cpu_reset),
PLATFORMMETHOD_END,
};
FDT_PLATFORM_DEF(a13, "a13", 0, "allwinner,sun5i-a13", 200);
#endif
#if defined(SOC_ALLWINNER_A20)
static platform_method_t a20_methods[] = {
PLATFORMMETHOD(platform_attach, a20_attach),
PLATFORMMETHOD(platform_devmap_init, allwinner_devmap_init),
PLATFORMMETHOD(platform_cpu_reset, allwinner_cpu_reset),
#ifdef SMP
PLATFORMMETHOD(platform_mp_start_ap, aw_mp_start_ap),
PLATFORMMETHOD(platform_mp_setmaxid, aw_mp_setmaxid),
#endif
PLATFORMMETHOD_END,
};
FDT_PLATFORM_DEF(a20, "a20", 0, "allwinner,sun7i-a20", 200);
#endif
#if defined(SOC_ALLWINNER_A31)
static platform_method_t a31_methods[] = {
PLATFORMMETHOD(platform_attach, a31_attach),
PLATFORMMETHOD(platform_devmap_init, allwinner_devmap_init),
PLATFORMMETHOD(platform_cpu_reset, allwinner_cpu_reset),
#ifdef SMP
PLATFORMMETHOD(platform_mp_start_ap, aw_mp_start_ap),
PLATFORMMETHOD(platform_mp_setmaxid, aw_mp_setmaxid),
#endif
PLATFORMMETHOD_END,
};
FDT_PLATFORM_DEF(a31, "a31", 0, "allwinner,sun6i-a31", 200);
#endif
#if defined(SOC_ALLWINNER_A31S)
static platform_method_t a31s_methods[] = {
PLATFORMMETHOD(platform_attach, a31s_attach),
PLATFORMMETHOD(platform_devmap_init, allwinner_devmap_init),
PLATFORMMETHOD(platform_cpu_reset, allwinner_cpu_reset),
#ifdef SMP
PLATFORMMETHOD(platform_mp_start_ap, aw_mp_start_ap),
PLATFORMMETHOD(platform_mp_setmaxid, aw_mp_setmaxid),
#endif
PLATFORMMETHOD_END,
};
FDT_PLATFORM_DEF(a31s, "a31s", 0, "allwinner,sun6i-a31s", 200);
#endif
#if defined(SOC_ALLWINNER_A33)
static platform_method_t a33_methods[] = {
PLATFORMMETHOD(platform_attach, a33_attach),
PLATFORMMETHOD(platform_devmap_init, allwinner_devmap_init),
PLATFORMMETHOD(platform_cpu_reset, allwinner_cpu_reset),
#ifdef SMP
PLATFORMMETHOD(platform_mp_start_ap, aw_mp_start_ap),
PLATFORMMETHOD(platform_mp_setmaxid, aw_mp_setmaxid),
#endif
PLATFORMMETHOD_END,
};
FDT_PLATFORM_DEF(a33, "a33", 0, "allwinner,sun8i-a33", 200);
#endif
#if defined(SOC_ALLWINNER_A83T)
static platform_method_t a83t_methods[] = {
PLATFORMMETHOD(platform_attach, a83t_attach),
PLATFORMMETHOD(platform_devmap_init, allwinner_devmap_init),
PLATFORMMETHOD(platform_cpu_reset, allwinner_cpu_reset),
#ifdef SMP
PLATFORMMETHOD(platform_mp_start_ap, a83t_mp_start_ap),
PLATFORMMETHOD(platform_mp_setmaxid, aw_mp_setmaxid),
#endif
PLATFORMMETHOD_END,
};
FDT_PLATFORM_DEF(a83t, "a83t", 0, "allwinner,sun8i-a83t", 200);
#endif
#if defined(SOC_ALLWINNER_H2PLUS)
static platform_method_t h2_plus_methods[] = {
PLATFORMMETHOD(platform_attach, h3_attach),
PLATFORMMETHOD(platform_devmap_init, allwinner_devmap_init),
PLATFORMMETHOD(platform_cpu_reset, allwinner_cpu_reset),
#ifdef SMP
PLATFORMMETHOD(platform_mp_start_ap, aw_mp_start_ap),
PLATFORMMETHOD(platform_mp_setmaxid, aw_mp_setmaxid),
#endif
PLATFORMMETHOD_END,
};
FDT_PLATFORM_DEF(h2_plus, "h2_plus", 0, "allwinner,sun8i-h2-plus", 200);
#endif
#if defined(SOC_ALLWINNER_H3)
static platform_method_t h3_methods[] = {
PLATFORMMETHOD(platform_attach, h3_attach),
PLATFORMMETHOD(platform_devmap_init, allwinner_devmap_init),
PLATFORMMETHOD(platform_cpu_reset, allwinner_cpu_reset),
#ifdef SMP
PLATFORMMETHOD(platform_mp_start_ap, aw_mp_start_ap),
PLATFORMMETHOD(platform_mp_setmaxid, aw_mp_setmaxid),
#endif
PLATFORMMETHOD_END,
};
FDT_PLATFORM_DEF(h3, "h3", 0, "allwinner,sun8i-h3", 200);
#endif
u_int
allwinner_soc_type(void)
{
return (soc_type);
}
u_int
allwinner_soc_family(void)
{
return (soc_family);
}
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