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https://github.com/projectacrn/acrn-hypervisor.git
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2d469a5e5f
hypervisor initilization component triggered by boot component, and it calls different components initilization functions from the highest layer. this patch added init.c and move reorged cpu init functions into it, keep hardware management functions in cpu.c but move other components' init function into init.c. the hypervisor initilization components will call: - init_cpu_pre - init_cpu_post - init_bsp - init_debug_pre - init_debug_post - init_guest - init_passthru - enter_guest_mode the hypervisor initilization component include files: arch/x86/init.c include/arch/x86/init.h this component is higest layer, so there is no reverse dependencies for it. v2: - separate into 2 patches, 1 for reorg, 1 for pure move. Tracked-On: #1842 Signed-off-by: Jason Chen CJ <jason.cj.chen@intel.com> Acked-by: Xu, Anthony <anthony.xu@intel.com>
143 lines
2.9 KiB
C
143 lines
2.9 KiB
C
/*
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* Copyright (C) 2018 Intel Corporation. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <init.h>
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#include <hypervisor.h>
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#include <schedule.h>
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/* Push sp magic to top of stack for call trace */
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#define SWITCH_TO(rsp, to) \
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{ \
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asm volatile ("movq %0, %%rsp\n" \
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"pushq %1\n" \
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"call *%2\n" \
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: \
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: "r"(rsp), "rm"(SP_BOTTOM_MAGIC), "a"(to)); \
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}
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/*TODO: move into debug module */
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static void init_debug_pre(void)
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{
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/* Initialize console */
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console_init();
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/* Enable logging */
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init_logmsg(CONFIG_LOG_DESTINATION);
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}
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/*TODO: move into debug module */
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static void init_debug_post(uint16_t pcpu_id)
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{
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if (pcpu_id == BOOT_CPU_ID) {
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/* Initialize the shell */
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shell_init();
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console_setup_timer();
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}
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profiling_setup();
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}
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/*TODO: move into pass-thru module */
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static void init_passthru(void)
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{
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if (init_iommu() != 0) {
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panic("failed to initialize iommu!");
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}
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ptdev_init();
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}
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/*TODO: move into guest-vcpu module */
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static void init_guest(void)
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{
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init_scheduler();
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}
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/*TODO: move into guest-vcpu module */
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static void enter_guest_mode(uint16_t pcpu_id)
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{
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exec_vmxon_instr(pcpu_id);
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#ifdef CONFIG_PARTITION_MODE
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(void)prepare_vm(pcpu_id);
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#else
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if (pcpu_id == BOOT_CPU_ID) {
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(void)prepare_vm(pcpu_id);
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}
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#endif
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default_idle();
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/* Control should not come here */
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cpu_dead(pcpu_id);
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}
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static void bsp_boot_post(void)
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{
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/* Perform any necessary BSP initialization */
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init_bsp();
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init_debug_pre();
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init_guest();
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init_cpu_post(BOOT_CPU_ID);
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init_debug_post(BOOT_CPU_ID);
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init_passthru();
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enter_guest_mode(BOOT_CPU_ID);
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}
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/* NOTE: this function is using temp stack, and after SWITCH_TO(runtime_sp, to)
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* it will switch to runtime stack.
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*/
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void bsp_boot_init(void)
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{
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uint64_t rsp;
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init_cpu_pre(BOOT_CPU_ID);
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/* Switch to run-time stack */
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rsp = (uint64_t)(&get_cpu_var(stack)[CONFIG_STACK_SIZE - 1]);
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rsp &= ~(CPU_STACK_ALIGN - 1UL);
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SWITCH_TO(rsp, bsp_boot_post);
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}
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static void cpu_secondary_post(void)
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{
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uint16_t pcpu_id;
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/* Release secondary boot spin-lock to allow one of the next CPU(s) to
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* perform this common initialization
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*/
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spinlock_release(&trampoline_spinlock);
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pcpu_id = get_cpu_id();
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init_cpu_post(pcpu_id);
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init_debug_post(pcpu_id);
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enter_guest_mode(pcpu_id);
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}
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/* NOTE: this function is using temp stack, and after SWITCH_TO(runtime_sp, to)
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* it will switch to runtime stack.
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*/
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void cpu_secondary_init(void)
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{
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uint64_t rsp;
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init_cpu_pre(INVALID_CPU_ID);
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/* Switch to run-time stack */
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rsp = (uint64_t)(&get_cpu_var(stack)[CONFIG_STACK_SIZE - 1]);
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rsp &= ~(CPU_STACK_ALIGN - 1UL);
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SWITCH_TO(rsp, cpu_secondary_post);
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}
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