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https://github.com/brain-hackers/u-boot-brain
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9a561753ce
Newly add ARMv8 PSCI needs to be initialized, be copied or reserved in right place, this patch does all the setup steps. Signed-off-by: Hongbo Zhang <hongbo.zhang@nxp.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: York Sun <york.sun@nxp.com>
66 lines
1.3 KiB
C
66 lines
1.3 KiB
C
/*
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* (C) Copyright 2008 Texas Insturments
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*
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* (C) Copyright 2002
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* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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* Marius Groeger <mgroeger@sysgo.de>
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*
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* (C) Copyright 2002
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* Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <command.h>
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#include <asm/system.h>
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#include <asm/secure.h>
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#include <linux/compiler.h>
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int cleanup_before_linux(void)
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{
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/*
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* this function is called just before we call linux
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* it prepares the processor for linux
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*
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* disable interrupt and turn off caches etc ...
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*/
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disable_interrupts();
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/*
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* Turn off I-cache and invalidate it
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*/
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icache_disable();
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invalidate_icache_all();
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/*
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* turn off D-cache
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* dcache_disable() in turn flushes the d-cache and disables MMU
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*/
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dcache_disable();
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invalidate_dcache_all();
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return 0;
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}
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#ifdef CONFIG_ARMV8_PSCI
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static void relocate_secure_section(void)
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{
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#ifdef CONFIG_ARMV8_SECURE_BASE
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size_t sz = __secure_end - __secure_start;
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memcpy((void *)CONFIG_ARMV8_SECURE_BASE, __secure_start, sz);
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flush_dcache_range(CONFIG_ARMV8_SECURE_BASE,
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CONFIG_ARMV8_SECURE_BASE + sz + 1);
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invalidate_icache_all();
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#endif
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}
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void armv8_setup_psci(void)
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{
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relocate_secure_section();
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secure_ram_addr(psci_setup_vectors)();
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secure_ram_addr(psci_arch_init)();
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}
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#endif
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