c30892ca9f
of this was various com(4) glue so modify all of that to use the new com_init_regs_stride instead.
122 lines
3.4 KiB
C
122 lines
3.4 KiB
C
/* $NetBSD: arm_platform.c,v 1.3 2020/09/28 11:54:23 jmcneill Exp $ */
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/*-
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* Copyright (c) 2020 Jared McNeill <jmcneill@invisible.ca>
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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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* 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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/*
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* This is the default Arm FDT platform implementation. It assumes the
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* following:
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*
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* - Generic timer
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* - PSCI support
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* - Console UART is pre-configured by firmware
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: arm_platform.c,v 1.3 2020/09/28 11:54:23 jmcneill Exp $");
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/cpu.h>
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#include <sys/device.h>
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#include <sys/termios.h>
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#include <dev/fdt/fdtvar.h>
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#include <arm/fdt/arm_fdtvar.h>
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#include <uvm/uvm_extern.h>
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#include <machine/bootconfig.h>
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#include <arm/cpufunc.h>
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#include <arm/cortex/gtmr_var.h>
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#include <arm/arm/psci.h>
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#include <arm/fdt/psci_fdtvar.h>
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#include <libfdt.h>
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#include <arch/evbarm/fdt/platform.h>
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extern struct arm32_bus_dma_tag arm_generic_dma_tag;
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extern struct bus_space arm_generic_bs_tag;
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static void
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arm_platform_init_attach_args(struct fdt_attach_args *faa)
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{
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faa->faa_bst = &arm_generic_bs_tag;
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faa->faa_dmat = &arm_generic_dma_tag;
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}
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static void
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arm_platform_device_register(device_t self, void *aux)
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{
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}
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static const struct pmap_devmap *
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arm_platform_devmap(void)
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{
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static const struct pmap_devmap devmap_empty[] = {
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DEVMAP_ENTRY_END
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};
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static struct pmap_devmap devmap_uart[] = {
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DEVMAP_ENTRY(KERNEL_IO_VBASE, 0, PAGE_SIZE),
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DEVMAP_ENTRY_END
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};
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bus_addr_t uart_base;
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const int phandle = fdtbus_get_stdout_phandle();
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if (phandle <= 0)
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return devmap_empty;
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if (fdtbus_get_reg(phandle, 0, &uart_base, NULL) != 0)
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return devmap_empty;
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devmap_uart[0].pd_pa = DEVMAP_ALIGN(uart_base);
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return devmap_uart;
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}
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static u_int
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arm_platform_uart_freq(void)
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{
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return 0;
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}
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static const struct arm_platform arm_platform = {
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.ap_devmap = arm_platform_devmap,
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.ap_bootstrap = arm_fdt_cpu_bootstrap,
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.ap_init_attach_args = arm_platform_init_attach_args,
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.ap_device_register = arm_platform_device_register,
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.ap_reset = psci_fdt_reset,
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.ap_delay = gtmr_delay,
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.ap_uart_freq = arm_platform_uart_freq,
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.ap_mpstart = arm_fdt_cpu_mpstart,
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};
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ARM_PLATFORM(arm, ARM_PLATFORM_DEFAULT, &arm_platform);
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