mirror of
https://github.com/projectacrn/acrn-hypervisor.git
synced 2025-04-30 20:53:56 +00:00
19ffaa50dc
Initialize and sanitize a acrn specific multiboot info struct with current supported multiboot1 in very early boot stage, which would bring below benifits: - don't need to do hpa2hva convention every time when refering boot_regs; - panic early if failed to sanitize multiboot info, so that don't need to check multiboot info pointer/flags and panic in later boot process; - keep most code unchanged when introduce multiboot2 support in future; Tracked-On: #4419 Signed-off-by: Victor Sun <victor.sun@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>
43 lines
922 B
C
43 lines
922 B
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 <errno.h>
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#include <boot.h>
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#include <pgtable.h>
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#include <dbg_cmd.h>
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#include <logmsg.h>
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void parse_hv_cmdline(void)
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{
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const char *start = NULL;
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const char *end = NULL;
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if (boot_from_multiboot1()) {
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struct multiboot_info *mbi = (struct multiboot_info *)(hpa2hva_early((uint64_t)boot_regs[1]));
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if ((mbi->mi_flags & MULTIBOOT_INFO_HAS_CMDLINE) != 0U) {
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start = (char *)hpa2hva_early((uint64_t)mbi->mi_cmdline);
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}
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}
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while ((start != NULL) && ((*start) != '\0')) {
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while ((*start) == ' ')
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start++;
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if ((*start) != '\0') {
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end = start + 1;
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while ((*end != ' ') && ((*end) != '\0'))
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end++;
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if (!handle_dbg_cmd(start, (int32_t)(end - start))) {
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/* if not handled by handle_dbg_cmd, it can be handled further */
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}
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start = end;
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}
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}
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}
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