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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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acc902de05
There is inconvenient for maintainers and maintainership to have some quirks under architectural code. Move it to the specific quirk file like other 8250-compatible drivers do. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20250627182743.1273326-1-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
61 lines
1.5 KiB
C
61 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Intel CE4100 platform specific setup code
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*
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* (C) Copyright 2010 Intel Corporation
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*/
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#include <linux/init.h>
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#include <linux/reboot.h>
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#include <asm/ce4100.h>
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#include <asm/prom.h>
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#include <asm/setup.h>
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#include <asm/io.h>
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/*
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* The CE4100 platform has an internal 8051 Microcontroller which is
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* responsible for signaling to the external Power Management Unit the
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* intention to reset, reboot or power off the system. This 8051 device has
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* its command register mapped at I/O port 0xcf9 and the value 0x4 is used
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* to power off the system.
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*/
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static void ce4100_power_off(void)
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{
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outb(0x4, 0xcf9);
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}
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static void __init sdv_arch_setup(void)
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{
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sdv_serial_fixup();
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}
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static void sdv_pci_init(void)
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{
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x86_of_pci_init();
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}
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/*
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* CE4100 specific x86_init function overrides and early setup
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* calls.
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*/
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void __init x86_ce4100_early_setup(void)
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{
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x86_init.oem.arch_setup = sdv_arch_setup;
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x86_init.resources.probe_roms = x86_init_noop;
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x86_init.mpparse.find_mptable = x86_init_noop;
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x86_init.mpparse.early_parse_smp_cfg = x86_init_noop;
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x86_init.pci.init = ce4100_pci_init;
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x86_init.pci.init_irq = sdv_pci_init;
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/*
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* By default, the reboot method is ACPI which is supported by the
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* CE4100 bootloader CEFDK using FADT.ResetReg Address and ResetValue
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* the bootloader will however issue a system power off instead of
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* reboot. By using BOOT_KBD we ensure proper system reboot as
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* expected.
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*/
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reboot_type = BOOT_KBD;
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pm_power_off = ce4100_power_off;
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}
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