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https://github.com/projectacrn/acrn-hypervisor.git
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f3249e77bd
Currently panic() and pr_xxx() statements before init_primary_pcpu_post() won't be printed, which is inconvenient and misleading for debugging. This patch makes pr_xxx() APIs working before init_pcpu_pre(): - clear .bss in init.c, which makes sense to clear .bss at the very beginning of initialization code. Also this makes it possible to call init_logmsg() before init_pcpu_pre(). - move parse_hv_cmdline() and uart16550_init(true) to init.c. - refine ticks_to_us() to handle the case that it's called before calibrate_tsc(). As a side effect, it prints "0us" in early pr_xxx() calls. - call init_debug_pre() in init_primary_pcpu() and after this point, both printf() and pr_xxx() APIs are available. However, this patch doesn't address the issue that pr_xxx() could be called on PCPUs that set_current_pcpu_id() hasn't been called, which implies that the PCPU ID shown in early logs may not be accurate. Tracked-On: #2987 Signed-off-by: Zide Chen <zide.chen@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>
119 lines
2.3 KiB
C
119 lines
2.3 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 <types.h>
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#include <init.h>
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#include <console.h>
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#include <per_cpu.h>
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#include <profiling.h>
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#include <vtd.h>
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#include <shell.h>
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#include <vmx.h>
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#include <vm.h>
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#include <logmsg.h>
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#include <seed.h>
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#include <uart16550.h>
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#include <ld_sym.h>
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#include <vboot.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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"jmpq *%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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/*
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* Enable UART as early as possible.
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* Then we could use printf for debugging on early boot stage.
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*/
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uart16550_init(true);
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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 guest-vcpu module */
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static void init_guest_mode(uint16_t pcpu_id)
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{
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vmx_on();
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launch_vms(pcpu_id);
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}
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static void init_primary_pcpu_post(void)
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{
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init_seed();
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init_pcpu_post(BOOT_CPU_ID);
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init_debug_post(BOOT_CPU_ID);
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init_guest_mode(BOOT_CPU_ID);
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run_idle_thread();
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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 init_primary_pcpu(void)
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{
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uint64_t rsp;
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/* Clear BSS */
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(void)memset(&ld_bss_start, 0U, (size_t)(&ld_bss_end - &ld_bss_start));
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(void)parse_hv_cmdline();
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init_debug_pre();
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init_pcpu_pre(true);
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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, init_primary_pcpu_post);
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}
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void init_secondary_pcpu(void)
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{
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uint16_t pcpu_id;
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init_pcpu_pre(false);
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pcpu_id = get_pcpu_id();
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init_pcpu_post(pcpu_id);
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init_debug_post(pcpu_id);
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init_guest_mode(pcpu_id);
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run_idle_thread();
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}
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