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https://github.com/projectacrn/acrn-hypervisor.git
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1f3acb3dd9
With current code, memcpy rsdp to 0x500 maybe overwrite uefi code/data region. So remove the legacy BIOS deliver method of RSDP, which need copy the RSDP to EBDA space which is addressed by the 16bit pointer at 0x40E or upper memory BIOS space 0xe0000-0xfffff. And just deliver the pointer of RSDP, which is already saved in UEFI system table, to hypervisor. Create a function named efi_init() to separate efi initialize code. Signed-off-by: Zheng, Gen <gen.zheng@intel.com>
66 lines
2.1 KiB
C
66 lines
2.1 KiB
C
/*
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* Copyright (C) 2018 Intel Corporation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef UEFI_H
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#define UEFI_H
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typedef struct {
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uint16_t limit;
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uint64_t *base;
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} __attribute__((packed)) dt_addr_t;
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struct efi_ctx {
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void *entry;
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void *handle;
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void *table;
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void *rsdp;
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dt_addr_t gdt;
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dt_addr_t idt;
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uint16_t tr_sel;
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uint16_t ldt_sel;
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uint64_t cr0;
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uint64_t cr3;
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uint64_t cr4;
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uint64_t rflags;
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uint16_t cs_sel;
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uint32_t cs_ar;
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uint16_t es_sel;
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uint16_t ss_sel;
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uint16_t ds_sel;
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uint16_t fs_sel;
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uint16_t gs_sel;
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uint64_t rsp;
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uint64_t efer;
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}__attribute__((packed));
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void *get_rsdp_from_uefi(void);
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#endif /* UEFI_H*/
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