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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * (C) Copyright 2002
- * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
- * Marius Groeger <mgroeger@sysgo.de>
- *
- * (C) Copyright 2002
- * Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
- */
- /*
- * CPU specific code
- */
- #include <common.h>
- #include <command.h>
- #include <cpu_func.h>
- #include <asm/system.h>
- #include <asm/io.h>
- static void cache_flush(void);
- int cleanup_before_linux (void)
- {
- /*
- * this function is called just before we call linux
- * it prepares the processor for linux
- *
- * we turn off caches etc ...
- */
- disable_interrupts ();
- /* ARM926E-S needs the protection unit enabled for the icache to have
- * been enabled - left for possible later use
- * should turn off the protection unit as well....
- */
- /* turn off I/D-cache */
- icache_disable();
- dcache_disable();
- /* flush I/D-cache */
- cache_flush();
- return 0;
- }
- /* flush I/D-cache */
- static void cache_flush (void)
- {
- unsigned long i = 0;
- asm ("mcr p15, 0, %0, c7, c5, 0": :"r" (i));
- asm ("mcr p15, 0, %0, c7, c6, 0": :"r" (i));
- }
- #ifndef CONFIG_ARCH_INTEGRATOR
- __attribute__((noreturn)) void reset_cpu(ulong addr __attribute__((unused)))
- {
- writew(0x0, 0xfffece10);
- writew(0x8, 0xfffece10);
- for (;;)
- ;
- }
- #endif /* #ifdef CONFIG_ARCH_INTEGRATOR */
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