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https://github.com/projectacrn/acrn-hypervisor.git
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69dc939243
By switching AP wakeup from broadcast to one by one, we could set correct stack for each AP and drop the temp stack used during AP boot. Tracked-On: #2034 Signed-off-by: Yin Fengwei <fengwei.yin@intel.com> Acked-by: Anthony Xu <anthony.xu@intel.com>
125 lines
2.4 KiB
C
125 lines
2.4 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();
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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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void init_secondary_cpu(void)
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{
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uint16_t pcpu_id;
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init_cpu_pre(INVALID_CPU_ID);
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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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