6ec74d02b6
Add a new call for initializing cache on architectures that need that. Avoid using SYS_INIT for this and instead call the hook in a fixed place and run if implemented. Signed-off-by: Anas Nashif <anas.nashif@intel.com>
68 lines
1.4 KiB
C
68 lines
1.4 KiB
C
/*
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* Copyright (c) 2019 Carlo Caione <ccaione@baylibre.com>
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @file
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* @brief Full C support initialization
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*
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* Initialization of full C support: zero the .bss and call z_cstart().
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*
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* Stack is available in this module, but not the global data/bss until their
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* initialization is performed.
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*/
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#include <kernel_internal.h>
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#include <zephyr/linker/linker-defs.h>
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#include <zephyr/platform/hooks.h>
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#include <zephyr/arch/cache.h>
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extern void z_arm64_mm_init(bool is_primary_core);
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__weak void z_arm64_mm_init(bool is_primary_core) { }
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/**
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*
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* @brief Prepare to and run C code
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*
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* This routine prepares for the execution of and runs C code.
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*
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*/
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void z_prep_c(void)
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{
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#if defined(CONFIG_SOC_PREP_HOOK)
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soc_prep_hook();
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#endif
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/* Initialize tpidrro_el0 with our struct _cpu instance address */
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write_tpidrro_el0((uintptr_t)&_kernel.cpus[0]);
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z_bss_zero();
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z_data_copy();
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#ifdef CONFIG_ARM64_SAFE_EXCEPTION_STACK
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/* After bss clean, _kernel.cpus is in bss section */
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z_arm64_safe_exception_stack_init();
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#endif
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z_arm64_mm_init(true);
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z_arm64_interrupt_init();
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z_cstart();
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CODE_UNREACHABLE;
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}
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#if CONFIG_MP_MAX_NUM_CPUS > 1
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extern FUNC_NORETURN void arch_secondary_cpu_init(void);
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void z_arm64_secondary_prep_c(void)
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{
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arch_secondary_cpu_init();
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#if CONFIG_ARCH_CACHE
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arch_cache_init();
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#endif
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CODE_UNREACHABLE;
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}
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#endif
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