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misc: efi-stub: Prepare multiboot1 info for HV 

This patch adds code to prepare multiboot1 info passed to hypervisor.

Tracked-On: #6241
Signed-off-by: Yifan Liu <yifan1.liu@intel.com>
Signed-off-by: Toshiki Nishioka <toshiki.nishioka@intel.com>
This commit is contained in:
Yifan Liu 2021-06-22 16:47:15 +08:00 committed by wenlingz
parent f3d1823754
commit 8c45359170
1 changed files with 45 additions and 0 deletions
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45
misc/efi-stub/boot.c
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@ -239,6 +239,51 @@ out:
EFI_STATUS construct_mbi(HV_LOADER hvld, struct multiboot_info **mbinfo, struct efi_memmap_info *mmap_info)
{
EFI_STATUS err = EFI_SUCCESS;
int32_t e820_count = 0;
EFI_PHYSICAL_ADDRESS addr;
struct multiboot_mmap *mmap;
struct multiboot_info *mbi;
char *uefi_boot_loader_name;
static const char loader_name[BOOT_LOADER_NAME_SIZE] = UEFI_BOOT_LOADER_NAME;
err = allocate_pool(EfiLoaderData, EFI_BOOT_MEM_SIZE, (VOID *)&addr);
if (err != EFI_SUCCESS) {
Print(L"Failed to allocate memory for EFI boot\n");
goto out;
}
(void)memset((void *)addr, 0x0, EFI_BOOT_MEM_SIZE);
mmap = MBOOT_MMAP_PTR(addr);
mbi = MBOOT_INFO_PTR(addr);
uefi_boot_loader_name = BOOT_LOADER_NAME_PTR(addr);
memcpy(uefi_boot_loader_name, loader_name, BOOT_LOADER_NAME_SIZE);
err = get_efi_memmap(mmap_info, 0);
if (err != EFI_SUCCESS)
goto out;
err = fill_e820(hvld, mmap_info, mmap, &e820_count);
if (err != EFI_SUCCESS)
goto out;
mbi->mi_cmdline = (UINTN)hvld->get_boot_cmd(hvld);
mbi->mi_mmap_addr = (UINTN)mmap;
mbi->mi_mmap_length = e820_count*sizeof(struct multiboot_mmap);
mbi->mi_flags |= MULTIBOOT_INFO_HAS_MMAP | MULTIBOOT_INFO_HAS_CMDLINE;
/* Set boot loader name in the multiboot header of UEFI, this name is used by hypervisor;
* The host physical start address of boot loader name is stored in multiboot header.
*/
mbi->mi_flags |= MULTIBOOT_INFO_HAS_LOADER_NAME;
mbi->mi_loader_name = (UINT32)(uint64_t)uefi_boot_loader_name;
mbi->mi_mods_addr = hvld->get_mod_hpa(hvld);
mbi->mi_mods_count = hvld->get_mod_count(hvld);
mbi->mi_flags |= MULTIBOOT_INFO_HAS_MODS;
*mbinfo = mbi;
out:
return err;
}