# Makefile for the linux kernel.
#
-obj-y := setup.o sysirq_mask.o
+obj-y := setup.o
obj-$(CONFIG_SOC_AT91SAM9) += sam9_smc.o
static void __init at91sam9260_initialize(void)
{
arm_pm_idle = at91sam9_idle;
-
- at91_sysirq_mask_rtt(AT91SAM9260_BASE_RTT);
}
AT91_SOC_START(at91sam9260)
static void __init at91sam9261_initialize(void)
{
arm_pm_idle = at91sam9_idle;
-
- at91_sysirq_mask_rtt(AT91SAM9261_BASE_RTT);
}
AT91_SOC_START(at91sam9261)
static void __init at91sam9263_initialize(void)
{
arm_pm_idle = at91sam9_idle;
-
- at91_sysirq_mask_rtt(AT91SAM9263_BASE_RTT0);
- at91_sysirq_mask_rtt(AT91SAM9263_BASE_RTT1);
}
AT91_SOC_START(at91sam9263)
static void __init at91sam9g45_initialize(void)
{
arm_pm_idle = at91sam9_idle;
-
- at91_sysirq_mask_rtc(AT91SAM9G45_BASE_RTC);
- at91_sysirq_mask_rtt(AT91SAM9G45_BASE_RTT);
}
AT91_SOC_START(at91sam9g45)
at91_init_sram(0, AT91SAM9N12_SRAM_BASE, AT91SAM9N12_SRAM_SIZE);
}
-static void __init at91sam9n12_initialize(void)
-{
- at91_sysirq_mask_rtc(AT91SAM9N12_BASE_RTC);
-}
-
AT91_SOC_START(at91sam9n12)
.map_io = at91sam9n12_map_io,
- .init = at91sam9n12_initialize,
AT91_SOC_END
static void __init at91sam9rl_initialize(void)
{
arm_pm_idle = at91sam9_idle;
-
- at91_sysirq_mask_rtc(AT91SAM9RL_BASE_RTC);
- at91_sysirq_mask_rtt(AT91SAM9RL_BASE_RTT);
}
AT91_SOC_START(at91sam9rl)
at91_init_sram(0, AT91SAM9X5_SRAM_BASE, AT91SAM9X5_SRAM_SIZE);
}
-static void __init at91sam9x5_initialize(void)
-{
- at91_sysirq_mask_rtc(AT91SAM9X5_BASE_RTC);
-}
-
-/* --------------------------------------------------------------------
- * Interrupt initialization
- * -------------------------------------------------------------------- */
-
AT91_SOC_START(at91sam9x5)
.map_io = at91sam9x5_map_io,
- .init = at91sam9x5_initialize,
AT91_SOC_END
extern void __init at91rm9200_dt_initialize(void);
extern void __init at91_dt_initialize(void);
- /* Interrupts */
-extern void __init at91_sysirq_mask_rtc(u32 rtc_base);
-extern void __init at91_sysirq_mask_rtt(u32 rtt_base);
-
/* Timer */
extern void at91rm9200_timer_init(void);
+++ /dev/null
-/*
- * arch/arm/mach-at91/include/mach/at91_rtt.h
- *
- * Copyright (C) 2007 Andrew Victor
- * Copyright (C) 2007 Atmel Corporation.
- *
- * Real-time Timer (RTT) - System peripherals regsters.
- * Based on AT91SAM9261 datasheet revision D.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#ifndef AT91_RTT_H
-#define AT91_RTT_H
-
-#define AT91_RTT_MR 0x00 /* Real-time Mode Register */
-#define AT91_RTT_RTPRES (0xffff << 0) /* Real-time Timer Prescaler Value */
-#define AT91_RTT_ALMIEN (1 << 16) /* Alarm Interrupt Enable */
-#define AT91_RTT_RTTINCIEN (1 << 17) /* Real Time Timer Increment Interrupt Enable */
-#define AT91_RTT_RTTRST (1 << 18) /* Real Time Timer Restart */
-
-#define AT91_RTT_AR 0x04 /* Real-time Alarm Register */
-#define AT91_RTT_ALMV (0xffffffff) /* Alarm Value */
-
-#define AT91_RTT_VR 0x08 /* Real-time Value Register */
-#define AT91_RTT_CRTV (0xffffffff) /* Current Real-time Value */
-
-#define AT91_RTT_SR 0x0c /* Real-time Status Register */
-#define AT91_RTT_ALMS (1 << 0) /* Real-time Alarm Status */
-#define AT91_RTT_RTTINC (1 << 1) /* Real-time Timer Increment */
-
-#endif
at91_init_sram(0, SAMA5D3_SRAM_BASE, SAMA5D3_SRAM_SIZE);
}
-static void __init sama5d3_initialize(void)
-{
- at91_sysirq_mask_rtc(SAMA5D3_BASE_RTC);
-}
-
AT91_SOC_START(sama5d3)
.map_io = sama5d3_map_io,
- .init = sama5d3_initialize,
AT91_SOC_END
+++ /dev/null
-/*
- * sysirq_mask.c - System-interrupt masking
- *
- * Copyright (C) 2013 Johan Hovold <jhovold@gmail.com>
- *
- * Functions to disable system interrupts from backup-powered peripherals.
- *
- * The RTC and RTT-peripherals are generally powered by backup power (VDDBU)
- * and are not reset on wake-up, user, watchdog or software reset. This means
- * that their interrupts may be enabled during early boot (e.g. after a user
- * reset).
- *
- * As the RTC and RTT share the system-interrupt line with the PIT, an
- * interrupt occurring before a handler has been installed would lead to the
- * system interrupt being disabled and prevent the system from booting.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#include <linux/io.h>
-#include <mach/at91_rtt.h>
-
-#include "generic.h"
-
-#define AT91_RTC_IDR 0x24 /* Interrupt Disable Register */
-#define AT91_RTC_IMR 0x28 /* Interrupt Mask Register */
-#define AT91_RTC_IRQ_MASK 0x1f /* Available IRQs mask */
-
-void __init at91_sysirq_mask_rtc(u32 rtc_base)
-{
- void __iomem *base;
-
- base = ioremap(rtc_base, 64);
- if (!base)
- return;
-
- /*
- * sam9x5 SoCs have the following errata:
- * "RTC: Interrupt Mask Register cannot be used
- * Interrupt Mask Register read always returns 0."
- *
- * Hence we're not relying on IMR values to disable
- * interrupts.
- */
- writel_relaxed(AT91_RTC_IRQ_MASK, base + AT91_RTC_IDR);
- (void)readl_relaxed(base + AT91_RTC_IMR); /* flush */
-
- iounmap(base);
-}
-
-void __init at91_sysirq_mask_rtt(u32 rtt_base)
-{
- void __iomem *base;
- void __iomem *reg;
- u32 mode;
-
- base = ioremap(rtt_base, 16);
- if (!base)
- return;
-
- reg = base + AT91_RTT_MR;
-
- mode = readl_relaxed(reg);
- if (mode & (AT91_RTT_ALMIEN | AT91_RTT_RTTINCIEN)) {
- pr_info("AT91: Disabling rtt irq\n");
- mode &= ~(AT91_RTT_ALMIEN | AT91_RTT_RTTINCIEN);
- writel_relaxed(mode, reg);
- (void)readl_relaxed(reg); /* flush */
- }
-
- iounmap(base);
-}
projects / platform / kernel / linux-starfive.git / commitdiff