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https://github.com/projectacrn/acrn-hypervisor.git
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11cf9a4a8a
When need hpa and hva translation before init_paging, we need hpa2hva_early and hva2hpa_early since init_paging may modify hva2hpa to not be identical mapping. Tracked-On: #2987 Signed-off-by: Li, Fei1 <fei1.li@intel.com>
55 lines
1.1 KiB
C
55 lines
1.1 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 <errno.h>
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#include <multiboot.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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#include <vboot.h>
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#define ACRN_DBG_PARSE 6
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int32_t parse_hv_cmdline(void)
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{
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const char *start;
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const char *end;
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struct multiboot_info *mbi = NULL;
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if (boot_regs[0] != MULTIBOOT_INFO_MAGIC) {
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return -EINVAL;
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}
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mbi = (struct multiboot_info *)(hpa2hva_early((uint64_t)boot_regs[1]));
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dev_dbg(ACRN_DBG_PARSE, "Multiboot detected, flag=0x%x", mbi->mi_flags);
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if ((mbi->mi_flags & MULTIBOOT_INFO_HAS_CMDLINE) == 0U) {
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dev_dbg(ACRN_DBG_PARSE, "no hv cmdline!");
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return -EINVAL;
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}
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start = (char *)hpa2hva_early((uint64_t)mbi->mi_cmdline);
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dev_dbg(ACRN_DBG_PARSE, "hv cmdline: %s", start);
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do {
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while (*start == ' ')
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start++;
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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 + 1;
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} while (((*end) != '\0') && ((*start) != '\0'));
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return 0;
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}
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