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-rw-r--r--arch/arm64/kvm/hyp-init.S165
1 files changed, 0 insertions, 165 deletions
diff --git a/arch/arm64/kvm/hyp-init.S b/arch/arm64/kvm/hyp-init.S
deleted file mode 100644
index 160be2b4696d..000000000000
--- a/arch/arm64/kvm/hyp-init.S
+++ /dev/null
@@ -1,165 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Copyright (C) 2012,2013 - ARM Ltd
- * Author: Marc Zyngier <marc.zyngier@arm.com>
- */
-
-#include <linux/linkage.h>
-
-#include <asm/assembler.h>
-#include <asm/kvm_arm.h>
-#include <asm/kvm_mmu.h>
-#include <asm/pgtable-hwdef.h>
-#include <asm/sysreg.h>
-#include <asm/virt.h>
-
- .text
- .pushsection .hyp.idmap.text, "ax"
-
- .align 11
-
-ENTRY(__kvm_hyp_init)
- ventry __invalid // Synchronous EL2t
- ventry __invalid // IRQ EL2t
- ventry __invalid // FIQ EL2t
- ventry __invalid // Error EL2t
-
- ventry __invalid // Synchronous EL2h
- ventry __invalid // IRQ EL2h
- ventry __invalid // FIQ EL2h
- ventry __invalid // Error EL2h
-
- ventry __do_hyp_init // Synchronous 64-bit EL1
- ventry __invalid // IRQ 64-bit EL1
- ventry __invalid // FIQ 64-bit EL1
- ventry __invalid // Error 64-bit EL1
-
- ventry __invalid // Synchronous 32-bit EL1
- ventry __invalid // IRQ 32-bit EL1
- ventry __invalid // FIQ 32-bit EL1
- ventry __invalid // Error 32-bit EL1
-
-__invalid:
- b .
-
- /*
- * x0: HYP pgd
- * x1: HYP stack
- * x2: HYP vectors
- * x3: per-CPU offset
- */
-__do_hyp_init:
- /* Check for a stub HVC call */
- cmp x0, #HVC_STUB_HCALL_NR
- b.lo __kvm_handle_stub_hvc
-
- phys_to_ttbr x4, x0
-alternative_if ARM64_HAS_CNP
- orr x4, x4, #TTBR_CNP_BIT
-alternative_else_nop_endif
- msr ttbr0_el2, x4
-
- mrs x4, tcr_el1
- ldr x5, =TCR_EL2_MASK
- and x4, x4, x5
- mov x5, #TCR_EL2_RES1
- orr x4, x4, x5
-
- /*
- * The ID map may be configured to use an extended virtual address
- * range. This is only the case if system RAM is out of range for the
- * currently configured page size and VA_BITS, in which case we will
- * also need the extended virtual range for the HYP ID map, or we won't
- * be able to enable the EL2 MMU.
- *
- * However, at EL2, there is only one TTBR register, and we can't switch
- * between translation tables *and* update TCR_EL2.T0SZ at the same
- * time. Bottom line: we need to use the extended range with *both* our
- * translation tables.
- *
- * So use the same T0SZ value we use for the ID map.
- */
- ldr_l x5, idmap_t0sz
- bfi x4, x5, TCR_T0SZ_OFFSET, TCR_TxSZ_WIDTH
-
- /*
- * Set the PS bits in TCR_EL2.
- */
- tcr_compute_pa_size x4, #TCR_EL2_PS_SHIFT, x5, x6
-
- msr tcr_el2, x4
-
- mrs x4, mair_el1
- msr mair_el2, x4
- isb
-
- /* Invalidate the stale TLBs from Bootloader */
- tlbi alle2
- dsb sy
-
- /*
- * Preserve all the RES1 bits while setting the default flags,
- * as well as the EE bit on BE. Drop the A flag since the compiler
- * is allowed to generate unaligned accesses.
- */
- ldr x4, =(SCTLR_EL2_RES1 | (SCTLR_ELx_FLAGS & ~SCTLR_ELx_A))
-CPU_BE( orr x4, x4, #SCTLR_ELx_EE)
- msr sctlr_el2, x4
- isb
-
- /* Set the stack and new vectors */
- kern_hyp_va x1
- mov sp, x1
- msr vbar_el2, x2
-
- /* Set tpidr_el2 for use by HYP */
- msr tpidr_el2, x3
-
- /* Hello, World! */
- eret
-ENDPROC(__kvm_hyp_init)
-
-ENTRY(__kvm_handle_stub_hvc)
- cmp x0, #HVC_SOFT_RESTART
- b.ne 1f
-
- /* This is where we're about to jump, staying at EL2 */
- msr elr_el2, x1
- mov x0, #(PSR_F_BIT | PSR_I_BIT | PSR_A_BIT | PSR_D_BIT | PSR_MODE_EL2h)
- msr spsr_el2, x0
-
- /* Shuffle the arguments, and don't come back */
- mov x0, x2
- mov x1, x3
- mov x2, x4
- b reset
-
-1: cmp x0, #HVC_RESET_VECTORS
- b.ne 1f
-reset:
- /*
- * Reset kvm back to the hyp stub. Do not clobber x0-x4 in
- * case we coming via HVC_SOFT_RESTART.
- */
- mrs x5, sctlr_el2
- ldr x6, =SCTLR_ELx_FLAGS
- bic x5, x5, x6 // Clear SCTL_M and etc
- pre_disable_mmu_workaround
- msr sctlr_el2, x5
- isb
-
- /* Install stub vectors */
- adr_l x5, __hyp_stub_vectors
- msr vbar_el2, x5
- mov x0, xzr
- eret
-
-1: /* Bad stub call */
- ldr x0, =HVC_STUB_ERR
- eret
-
-ENDPROC(__kvm_handle_stub_hvc)
-
- .ltorg
-
- .popsection