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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * (C) Copyright 2010,2011
- * Vladimir Khusainov, Emcraft Systems, vlad@emcraft.com
- *
- * (C) Copyright 2015
- * Kamil Lulko, <kamil.lulko@gmail.com>
- */
- #include <common.h>
- #include <cpu_func.h>
- #include <irq_func.h>
- #include <asm/io.h>
- #include <asm/armv7m.h>
- /*
- * This is called right before passing control to
- * the Linux kernel point.
- */
- 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 D-cache
- * dcache_disable() in turn flushes the d-cache
- * MPU is still enabled & can't be disabled as the u-boot
- * code might be running in sdram which by default is not
- * executable area.
- */
- dcache_disable();
- /* invalidate to make sure no cache line gets dirty between
- * dcache flushing and disabling dcache */
- invalidate_dcache_all();
- icache_disable();
- invalidate_icache_all();
- return 0;
- }
- /*
- * Perform the low-level reset.
- */
- void reset_cpu(ulong addr)
- {
- /*
- * Perform reset but keep priority group unchanged.
- */
- writel((V7M_AIRCR_VECTKEY << V7M_AIRCR_VECTKEY_SHIFT)
- | (V7M_SCB->aircr & V7M_AIRCR_PRIGROUP_MSK)
- | V7M_AIRCR_SYSRESET, &V7M_SCB->aircr);
- }
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