ARM: remove sirf prima2/atlas platforms

The SiRF Prima2 and Atlas platform code was contributed by Cambridge
Silicon Radio (CSR) after aquiring the original SiRF company, and
maintained by Barry Song. CSR was subsequently acquired by Qualcomm,
who no longer have an interest in maintaining the SoC platform but
instead have released more recent SoCs for the same market in the
Snapdragon family.

As Barry is no longer working for the company, nobody else there
wants to maintain it, and there are no third-party users, the
best way forward seems to be to completely remove it.

Thanks to Barry for maintaining the platform for the past ten years.

Cc: Barry Song <baohua@kernel.org>
Link: https://lore.kernel.org/lkml/c969392572604b98bcb3be44048c3165@hisilicon.com/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 0 insertions, 38 deletions

diff --git a/arch/arm/mach-prima2/hotplug.c b/arch/arm/mach-prima2/hotplug.c
deleted file mode 100644
index bc0d957e89ac..000000000000
--- a/arch/arm/mach-prima2/hotplug.c
+++ /dev/null
@@ -1,38 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * CPU hotplug support for CSR Marco dual-core SMP SoCs
- *
- * Copyright (c) 2012 Cambridge Silicon Radio Limited, a CSR plc group company.
- */
-
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/smp.h>
-
-#include <asm/smp_plat.h>
-#include "common.h"
-
-static inline void platform_do_lowpower(unsigned int cpu)
-{
-	/* we put the platform to just WFI */
-	for (;;) {
-		__asm__ __volatile__("dsb\n\t" "wfi\n\t"
-			: : : "memory");
-		if (prima2_pen_release == cpu_logical_map(cpu)) {
-			/*
-			 * OK, proper wakeup, we're done
-			 */
-			break;
-		}
-	}
-}
-
-/*
- * platform-specific code to shutdown a CPU
- *
- * Called with IRQs disabled
- */
-void sirfsoc_cpu_die(unsigned int cpu)
-{
-	platform_do_lowpower(cpu);
-}