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sys/arm64/arm64/locore.S
| Show First 20 Lines • Show All 139 Lines • ▼ Show 20 Lines | 1: | ||||
| str x23, [x0, #BP_BOOT_EL] | str x23, [x0, #BP_BOOT_EL] | ||||
| /* trace back starts here */ | /* trace back starts here */ | ||||
| mov fp, #0 | mov fp, #0 | ||||
| /* Branch to C code */ | /* Branch to C code */ | ||||
| bl initarm | bl initarm | ||||
| /* We are done with the boot params */ | /* We are done with the boot params */ | ||||
| add sp, sp, #BOOTPARAMS_SIZE | add sp, sp, #BOOTPARAMS_SIZE | ||||
| bl ptrauth_start | |||||
jrtc27: This could benefit from a comment about why initarm doesn't just call ptrauth_start (obvious… | |||||
| bl mi_startup | bl mi_startup | ||||
| /* We should not get here */ | /* We should not get here */ | ||||
| brk 0 | brk 0 | ||||
| .align 3 | .align 3 | ||||
| .Lvirtdone: | .Lvirtdone: | ||||
| .quad virtdone | .quad virtdone | ||||
| ▲ Show 20 Lines • Show All 64 Lines • ▼ Show 20 Lines | |||||
| LENTRY(drop_to_el1) | LENTRY(drop_to_el1) | ||||
| mrs x23, CurrentEL | mrs x23, CurrentEL | ||||
| lsr x23, x23, #2 | lsr x23, x23, #2 | ||||
| cmp x23, #0x2 | cmp x23, #0x2 | ||||
| b.eq 1f | b.eq 1f | ||||
| ret | ret | ||||
| 1: | 1: | ||||
| /* Configure the Hypervisor */ | /* Configure the Hypervisor */ | ||||
| mov x2, #(HCR_RW) | ldr x2, =(HCR_RW | HCR_APK | HCR_API) | ||||
| msr hcr_el2, x2 | msr hcr_el2, x2 | ||||
| /* Load the Virtualization Process ID Register */ | /* Load the Virtualization Process ID Register */ | ||||
| mrs x2, midr_el1 | mrs x2, midr_el1 | ||||
| msr vpidr_el2, x2 | msr vpidr_el2, x2 | ||||
| /* Load the Virtualization Multiprocess ID Register */ | /* Load the Virtualization Multiprocess ID Register */ | ||||
| mrs x2, mpidr_el1 | mrs x2, mpidr_el1 | ||||
| ▲ Show 20 Lines • Show All 582 Lines • Show Last 20 Lines | |||||
This could benefit from a comment about why initarm doesn't just call ptrauth_start (obvious once you see the problem, but not if you don't...)