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https://github.com/edk2-porting/linux-next.git
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382b4480ff
This fixes a "start_kernel(): bug: interrupts were enabled early". rtc_cmos now takes care of initializing the ISA RTC and reading the current time and date from it; there's no need to repeat that here, thereby causing interrupts to be enabled too early. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
102 lines
2.1 KiB
C
102 lines
2.1 KiB
C
/*
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* linux/arch/arm/mach-footbridge/isa.c
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*
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* Copyright (C) 2004 Russell King.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/init.h>
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#include <linux/serial_8250.h>
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#include <asm/irq.h>
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#include <asm/hardware/dec21285.h>
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#include "common.h"
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static struct resource rtc_resources[] = {
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[0] = {
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.start = 0x70,
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.end = 0x73,
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.flags = IORESOURCE_IO,
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},
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[1] = {
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.start = IRQ_ISA_RTC_ALARM,
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.end = IRQ_ISA_RTC_ALARM,
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.flags = IORESOURCE_IRQ,
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}
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};
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static struct platform_device rtc_device = {
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.name = "rtc_cmos",
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.id = -1,
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.resource = rtc_resources,
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.num_resources = ARRAY_SIZE(rtc_resources),
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};
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static struct resource serial_resources[] = {
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[0] = {
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.start = 0x3f8,
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.end = 0x3ff,
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.flags = IORESOURCE_IO,
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},
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[1] = {
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.start = 0x2f8,
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.end = 0x2ff,
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.flags = IORESOURCE_IO,
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},
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};
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static struct plat_serial8250_port serial_platform_data[] = {
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{
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.iobase = 0x3f8,
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.irq = IRQ_ISA_UART,
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.uartclk = 1843200,
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.regshift = 0,
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.iotype = UPIO_PORT,
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.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
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},
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{
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.iobase = 0x2f8,
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.irq = IRQ_ISA_UART2,
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.uartclk = 1843200,
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.regshift = 0,
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.iotype = UPIO_PORT,
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.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
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},
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{ },
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};
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static struct platform_device serial_device = {
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.name = "serial8250",
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.id = PLAT8250_DEV_PLATFORM,
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.dev = {
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.platform_data = serial_platform_data,
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},
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.resource = serial_resources,
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.num_resources = ARRAY_SIZE(serial_resources),
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};
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static int __init footbridge_isa_init(void)
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{
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int err = 0;
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if (!footbridge_cfn_mode())
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return 0;
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/* Personal server doesn't have RTC */
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if (!machine_is_personal_server()) {
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isa_rtc_init();
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err = platform_device_register(&rtc_device);
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if (err)
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printk(KERN_ERR "Unable to register RTC device: %d\n", err);
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}
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err = platform_device_register(&serial_device);
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if (err)
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printk(KERN_ERR "Unable to register serial device: %d\n", err);
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return 0;
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}
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arch_initcall(footbridge_isa_init);
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