arch: remove unicore32 port

The unicore32 port do not seem maintained for a long time now, there is no
upstream toolchain that can create unicore32 binaries and all the links to
prebuilt toolchains for unicore32 are dead. Even compilers that were
available are not supported by the kernel anymore.

Guenter Roeck says:

  I have stopped building unicore32 images since v4.19 since there is no
  available compiler that is still supported by the kernel. I am surprised
  that support for it has not been removed from the kernel.

Remove unicore32 port.

Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Guenter Roeck <linux@roeck-us.net>

1 files changed, 0 insertions, 128 deletions

diff --git a/arch/unicore32/kernel/time.c b/arch/unicore32/kernel/time.c
deleted file mode 100644
index c3a37edf4d40..000000000000
--- a/arch/unicore32/kernel/time.c
+++ /dev/null
@@ -1,128 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * linux/arch/unicore32/kernel/time.c
- *
- * Code specific to PKUnity SoC and UniCore ISA
- *
- *	Maintained by GUAN Xue-tao <gxt@mprc.pku.edu.cn>
- *	Copyright (C) 2001-2010 Guan Xuetao
- */
-#include <linux/init.h>
-#include <linux/errno.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/timex.h>
-#include <linux/clockchips.h>
-
-#include <mach/hardware.h>
-
-#define MIN_OSCR_DELTA 2
-
-static irqreturn_t puv3_ost0_interrupt(int irq, void *dev_id)
-{
-	struct clock_event_device *c = dev_id;
-
-	/* Disarm the compare/match, signal the event. */
-	writel(readl(OST_OIER) & ~OST_OIER_E0, OST_OIER);
-	writel(readl(OST_OSSR) & ~OST_OSSR_M0, OST_OSSR);
-	c->event_handler(c);
-
-	return IRQ_HANDLED;
-}
-
-static int
-puv3_osmr0_set_next_event(unsigned long delta, struct clock_event_device *c)
-{
-	unsigned long next, oscr;
-
-	writel(readl(OST_OIER) | OST_OIER_E0, OST_OIER);
-	next = readl(OST_OSCR) + delta;
-	writel(next, OST_OSMR0);
-	oscr = readl(OST_OSCR);
-
-	return (signed)(next - oscr) <= MIN_OSCR_DELTA ? -ETIME : 0;
-}
-
-static int puv3_osmr0_shutdown(struct clock_event_device *evt)
-{
-	writel(readl(OST_OIER) & ~OST_OIER_E0, OST_OIER);
-	writel(readl(OST_OSSR) & ~OST_OSSR_M0, OST_OSSR);
-	return 0;
-}
-
-static struct clock_event_device ckevt_puv3_osmr0 = {
-	.name			= "osmr0",
-	.features		= CLOCK_EVT_FEAT_ONESHOT,
-	.rating			= 200,
-	.set_next_event		= puv3_osmr0_set_next_event,
-	.set_state_shutdown	= puv3_osmr0_shutdown,
-	.set_state_oneshot	= puv3_osmr0_shutdown,
-};
-
-static u64 puv3_read_oscr(struct clocksource *cs)
-{
-	return readl(OST_OSCR);
-}
-
-static struct clocksource cksrc_puv3_oscr = {
-	.name		= "oscr",
-	.rating		= 200,
-	.read		= puv3_read_oscr,
-	.mask		= CLOCKSOURCE_MASK(32),
-	.flags		= CLOCK_SOURCE_IS_CONTINUOUS,
-};
-
-void __init time_init(void)
-{
-	writel(0, OST_OIER);		/* disable any timer interrupts */
-	writel(0, OST_OSSR);		/* clear status on all timers */
-
-	clockevents_calc_mult_shift(&ckevt_puv3_osmr0, CLOCK_TICK_RATE, 5);
-
-	ckevt_puv3_osmr0.max_delta_ns =
-		clockevent_delta2ns(0x7fffffff, &ckevt_puv3_osmr0);
-	ckevt_puv3_osmr0.max_delta_ticks = 0x7fffffff;
-	ckevt_puv3_osmr0.min_delta_ns =
-		clockevent_delta2ns(MIN_OSCR_DELTA * 2, &ckevt_puv3_osmr0) + 1;
-	ckevt_puv3_osmr0.min_delta_ticks = MIN_OSCR_DELTA * 2;
-	ckevt_puv3_osmr0.cpumask = cpumask_of(0);
-
-	if (request_irq(IRQ_TIMER0, puv3_ost0_interrupt,
-			IRQF_TIMER | IRQF_IRQPOLL, "ost0", &ckevt_puv3_osmr0))
-		pr_err("Failed to register ost0 interrupt\n");
-
-	clocksource_register_hz(&cksrc_puv3_oscr, CLOCK_TICK_RATE);
-	clockevents_register_device(&ckevt_puv3_osmr0);
-}
-
-#ifdef CONFIG_PM
-unsigned long osmr[4], oier;
-
-void puv3_timer_suspend(void)
-{
-	osmr[0] = readl(OST_OSMR0);
-	osmr[1] = readl(OST_OSMR1);
-	osmr[2] = readl(OST_OSMR2);
-	osmr[3] = readl(OST_OSMR3);
-	oier = readl(OST_OIER);
-}
-
-void puv3_timer_resume(void)
-{
-	writel(0, OST_OSSR);
-	writel(osmr[0], OST_OSMR0);
-	writel(osmr[1], OST_OSMR1);
-	writel(osmr[2], OST_OSMR2);
-	writel(osmr[3], OST_OSMR3);
-	writel(oier, OST_OIER);
-
-	/*
-	 * OSMR0 is the system timer: make sure OSCR is sufficiently behind
-	 */
-	writel(readl(OST_OSMR0) - LATCH, OST_OSCR);
-}
-#else
-void puv3_timer_suspend(void) { };
-void puv3_timer_resume(void) { };
-#endif
-