197 lines
5.0 KiB
C
197 lines
5.0 KiB
C
/*-
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* Copyright 2013-2015 John Wehle <john@feith.com>
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* All rights reserved.
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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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#include "opt_global.h"
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_platform.h"
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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 <sys/devmap.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/intr.h>
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#include <machine/machdep.h>
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#include <machine/platform.h>
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#include <dev/fdt/fdt_common.h>
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#include <arm/amlogic/aml8726/aml8726_soc.h>
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#include <arm/amlogic/aml8726/aml8726_clkmsr.h>
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#if defined(SOCDEV_PA) && defined(SOCDEV_VA)
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vm_offset_t aml8726_aobus_kva_base = SOCDEV_VA;
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#else
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vm_offset_t aml8726_aobus_kva_base;
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#endif
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static void
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aml8726_fixup_busfreq(void)
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{
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phandle_t node;
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pcell_t freq, prop;
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ssize_t len;
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/*
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* Set the bus-frequency for the SoC simple-bus if it
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* needs updating (meaning the current frequency is zero).
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*/
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if ((freq = aml8726_clkmsr_bus_frequency()) == 0 ||
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(node = OF_finddevice("/soc")) == 0 ||
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fdt_is_compatible_strict(node, "simple-bus") == 0)
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while (1);
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freq = cpu_to_fdt32(freq);
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len = OF_getencprop(node, "bus-frequency", &prop, sizeof(prop));
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if ((len / sizeof(prop)) == 1 && prop == 0)
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OF_setprop(node, "bus-frequency", (void *)&freq, sizeof(freq));
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}
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vm_offset_t
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platform_lastaddr(void)
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{
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return (devmap_lastaddr());
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}
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void
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platform_probe_and_attach(void)
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{
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}
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void
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platform_gpio_init(void)
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{
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/*
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* The UART console driver used for debugging early boot code
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* needs to know the virtual base address of the aobus. It's
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* expected to equal SOCDEV_VA prior to initarm calling setttb
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* ... afterwards it needs to be updated due to the new page
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* tables.
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*
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* This means there's a deadzone in initarm between setttb
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* and platform_gpio_init during which printf can't be used.
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*/
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aml8726_aobus_kva_base =
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(vm_offset_t)devmap_ptov(0xc8100000, 0x100000);
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/*
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* The hardware mux used by clkmsr is unique to the SoC (though
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* currently clk81 is at a fixed location, however that might
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* change in the future).
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*/
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aml8726_identify_soc();
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/*
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* My aml8726-m3 development box which identifies the CPU as
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* a Cortex A9-r2 rev 4 randomly locks up during boot when WFI
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* is used.
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*/
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switch (aml8726_soc_hw_rev) {
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case AML_SOC_HW_REV_M3:
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cpufuncs.cf_sleep = (void *)cpufunc_nullop;
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break;
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default:
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break;
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}
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/*
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* This FDT fixup should arguably be called through fdt_fixup_table,
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* however currently there's no mechanism to specify a fixup which
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* should always be invoked.
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*
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* It needs to be called prior to the console being initialized which
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* is why it's called here, rather than from platform_late_init.
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*/
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aml8726_fixup_busfreq();
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}
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void
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platform_late_init(void)
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{
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}
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/*
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* Construct static devmap entries to map out the core
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* peripherals using 1mb section mappings.
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*/
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int
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platform_devmap_init(void)
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{
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devmap_add_entry(0xc1100000, 0x200000); /* cbus */
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devmap_add_entry(0xc4200000, 0x100000); /* pl310 */
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devmap_add_entry(0xc4300000, 0x100000); /* periph */
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devmap_add_entry(0xc8000000, 0x100000); /* apbbus */
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devmap_add_entry(0xc8100000, 0x100000); /* aobus */
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devmap_add_entry(0xc9000000, 0x800000); /* ahbbus */
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devmap_add_entry(0xd9000000, 0x100000); /* ahb */
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devmap_add_entry(0xda000000, 0x100000); /* secbus */
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return (0);
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}
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#ifndef INTRNG
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#ifndef DEV_GIC
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static int
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fdt_pic_decode_ic(phandle_t node, pcell_t *intr, int *interrupt, int *trig,
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int *pol)
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{
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/*
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* The single core chips have just an Amlogic PIC.
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*/
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if (!fdt_is_compatible_strict(node, "amlogic,aml8726-pic"))
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return (ENXIO);
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*interrupt = fdt32_to_cpu(intr[1]);
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*trig = INTR_TRIGGER_EDGE;
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*pol = INTR_POLARITY_HIGH;
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return (0);
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}
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#endif
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fdt_pic_decode_t fdt_pic_table[] = {
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#ifdef DEV_GIC
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&gic_decode_fdt,
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#else
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&fdt_pic_decode_ic,
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#endif
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NULL
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};
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#endif /* INTRNG */
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