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https://github.com/Atmosphere-NX/Atmosphere.git
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33 lines
1.2 KiB
C
33 lines
1.2 KiB
C
#include <string.h>
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#include "utils.h"
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#include "mmu.h"
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#include "memory_map.h"
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extern void (*__fini_array_start[])(void);
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extern void (*__fini_array_end[])(void);
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extern void _fini(void);
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extern uint8_t __pk2ldr_start__[], __pk2ldr_end__[];
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extern void __jump_to_lower_el(uint64_t arg, uintptr_t ep, unsigned int el);
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void coldboot_main(void);
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/* Needs to be called for EL3->EL3 chainloading (and only in that case). TODO: use it */
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static void __libc_fini_array(void) __attribute__((used)) {
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for (size_t i = __fini_array_end - __fini_array_start; i > 0; i--)
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__fini_array_start[i - 1]();
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_fini(); /* FIXME: do we have this gcc-provided symbol if we build with -nostartfiles? */
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}
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void coldboot_main(void) {
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uintptr_t *mmu_l3_table = (uintptr_t *)tzram_get_segment_address(TZRAM_SEGMENT_ID_L3_TRANSLATION_TABLE);
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void *pk2ldr = (void *)tzram_get_segment_address(TZRAM_SEGMENT_ID_PK2LDR);
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/* Clear and unmap pk2ldr (which is reused as exception entry stacks) */
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memset(pk2ldr, 0, __pk2ldr_end__ - __pk2ldr_start__);
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mmu_unmap_range(mmu_l3_table, pk2ldr, __pk2ldr_end__ - __pk2ldr_start__);
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tlb_invalidate_all_inner_shareable();
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/* TODO: stuff & jump to lower EL */
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}
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