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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * (C) Copyright 2008 Texas Insturments
- *
- * (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>
- */
- #include <common.h>
- #include <command.h>
- #include <cpu_func.h>
- #include <irq_func.h>
- #include <asm/system.h>
- #include <asm/secure.h>
- #include <linux/compiler.h>
- /*
- * sdelay() - simple spin loop.
- *
- * Will delay execution by roughly (@loops * 2) cycles.
- * This is necessary to be used before timers are accessible.
- *
- * A value of "0" will results in 2^64 loops.
- */
- void sdelay(unsigned long loops)
- {
- __asm__ volatile ("1:\n" "subs %0, %0, #1\n"
- "b.ne 1b" : "=r" (loops) : "0"(loops) : "cc");
- }
- int cleanup_before_linux(void)
- {
- /*
- * this function is called just before we call linux
- * it prepares the processor for linux
- *
- * disable interrupt and turn off caches etc ...
- */
- disable_interrupts();
- /*
- * Turn off I-cache and invalidate it
- */
- icache_disable();
- invalidate_icache_all();
- /*
- * turn off D-cache
- * dcache_disable() in turn flushes the d-cache and disables MMU
- */
- dcache_disable();
- invalidate_dcache_all();
- return 0;
- }
- #ifdef CONFIG_ARMV8_PSCI
- static void relocate_secure_section(void)
- {
- #ifdef CONFIG_ARMV8_SECURE_BASE
- size_t sz = __secure_end - __secure_start;
- memcpy((void *)CONFIG_ARMV8_SECURE_BASE, __secure_start, sz);
- flush_dcache_range(CONFIG_ARMV8_SECURE_BASE,
- CONFIG_ARMV8_SECURE_BASE + sz + 1);
- invalidate_icache_all();
- #endif
- }
- void armv8_setup_psci(void)
- {
- relocate_secure_section();
- secure_ram_addr(psci_setup_vectors)();
- secure_ram_addr(psci_arch_init)();
- }
- #endif
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