diff options
Diffstat (limited to 'arch/arm64/kernel/efi-entry.S')
| -rw-r--r-- | arch/arm64/kernel/efi-entry.S | 69 |
1 files changed, 0 insertions, 69 deletions
diff --git a/arch/arm64/kernel/efi-entry.S b/arch/arm64/kernel/efi-entry.S deleted file mode 100644 index 61a87fa1c305..000000000000 --- a/arch/arm64/kernel/efi-entry.S +++ /dev/null @@ -1,69 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * EFI entry point. - * - * Copyright (C) 2013, 2014 Red Hat, Inc. - * Author: Mark Salter <msalter@redhat.com> - */ -#include <linux/linkage.h> -#include <linux/init.h> - -#include <asm/assembler.h> - - __INIT - -SYM_CODE_START(efi_enter_kernel) - /* - * efi_pe_entry() will have copied the kernel image if necessary and we - * end up here with device tree address in x1 and the kernel entry - * point stored in x0. Save those values in registers which are - * callee preserved. - */ - ldr w2, =primary_entry_offset - add x19, x0, x2 // relocated Image entrypoint - mov x20, x1 // DTB address - - /* - * Clean the copied Image to the PoC, and ensure it is not shadowed by - * stale icache entries from before relocation. - */ - ldr w1, =kernel_size - add x1, x0, x1 - bl dcache_clean_poc - ic ialluis - - /* - * Clean the remainder of this routine to the PoC - * so that we can safely disable the MMU and caches. - */ - adr x0, 0f - adr x1, 3f - bl dcache_clean_poc -0: - /* Turn off Dcache and MMU */ - mrs x0, CurrentEL - cmp x0, #CurrentEL_EL2 - b.ne 1f - mrs x0, sctlr_el2 - bic x0, x0, #1 << 0 // clear SCTLR.M - bic x0, x0, #1 << 2 // clear SCTLR.C - pre_disable_mmu_workaround - msr sctlr_el2, x0 - isb - b 2f -1: - mrs x0, sctlr_el1 - bic x0, x0, #1 << 0 // clear SCTLR.M - bic x0, x0, #1 << 2 // clear SCTLR.C - pre_disable_mmu_workaround - msr sctlr_el1, x0 - isb -2: - /* Jump to kernel entry point */ - mov x0, x20 - mov x1, xzr - mov x2, xzr - mov x3, xzr - br x19 -3: -SYM_CODE_END(efi_enter_kernel) |