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https://github.com/ps5-linux/ps5-linux-loader.git
synced 2026-07-15 21:42:27 +00:00
72 lines
2.3 KiB
C
72 lines
2.3 KiB
C
#include "utils.h"
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// 7.xx offsets
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#define HV_REENTER_HYPERCORE_07xx 0x0000000062806380ULL
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#define HV_STACK_TABLE_07xx 0x000000006282E120ULL
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#define HV_PML4_07xx 0x000000006282E1A0ULL
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#define HV_ENTRY_07xx 0x000000006282E1B8ULL
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#define HV_MAIN_07xx 0x0000000000000E20
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#define G_VM_TAB_07xx 0x0000000000027C80
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// 6.50 offsets
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#define HV_REENTER_HYPERCORE_0650 0x0000000062806780ULL
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#define HV_STACK_TABLE_0650 0x000000006282D0C0ULL
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#define HV_PML4_0650 0x000000006282D140ULL
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#define HV_ENTRY_0650 0x000000006282D158ULL
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#define HV_MAIN_0650 0x0000000000000F10
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#define G_VM_TAB_0650 0x0000000000023C80
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#define MSR_APICBASE 0x01b
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#define MSR_GSBASE 0xc0000101
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#define DEFAULT_APIC_BASE 0xfee00000
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#define APICBASE_ENABLED 0x00000800
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#define APICBASE_BSP 0x00000100
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#define NESTED_CTRL_NP_ENABLE 0x1
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__attribute__((section(".entry_point"), naked)) uint32_t main(void) {
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volatile int fw_version = 0x11AA11AA; // To be updated by loader
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uint64_t hv_pml4 =
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*(uint64_t *)(fw_version == 0x0650 ? HV_PML4_0650 : HV_PML4_07xx);
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uint64_t hv_base = fw_version == 0x0650
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? (*(uint64_t *)HV_ENTRY_0650 - HV_MAIN_0650)
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: (*(uint64_t *)HV_ENTRY_07xx - HV_MAIN_07xx);
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uintptr_t *g_vm_tab = (uintptr_t *)vtophys_custom(
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hv_base + (fw_version == 0x0650 ? G_VM_TAB_0650 : G_VM_TAB_07xx),
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hv_pml4);
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for (int i = 0; i < 16; i++) {
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uintptr_t vc = vtophys_custom(g_vm_tab[i], hv_pml4);
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uintptr_t vmcb = vtophys_custom(*(uintptr_t *)(vc + 0x08), hv_pml4);
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if (i == 0) {
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// Restore guest_apic_base.
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*(uint64_t *)(vc + 0xe8) =
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DEFAULT_APIC_BASE | APICBASE_ENABLED | APICBASE_BSP;
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}
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// Disable nested paging.
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*(uint64_t *)(vmcb + 0x90) &= ~NESTED_CTRL_NP_ENABLE;
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}
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// Restore host apic base.
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wrmsr(MSR_APICBASE, DEFAULT_APIC_BASE | APICBASE_ENABLED | APICBASE_BSP);
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// Restore gs base.
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wrmsr(MSR_GSBASE,
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((uint64_t *)(fw_version == 0x0650 ? HV_STACK_TABLE_0650
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: HV_STACK_TABLE_07xx))[0] +
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0x1000);
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// Reenter hypercore.
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void (*hv_reenter_hypercore)(void) =
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(void *)(fw_version == 0x0650 ? HV_REENTER_HYPERCORE_0650
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: HV_REENTER_HYPERCORE_07xx);
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hv_reenter_hypercore();
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while (1)
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;
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}
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