mirror of
https://github.com/projectacrn/acrn-hypervisor.git
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misc: efi-stub: Prepare multiboot2 info for HV
This patch adds code to prepare multiboot2 info passed to hypervisor.
Currently we prepare only the following information to hypervisor:
Boot command line
Boot loader name
Modules
Memory Map
ACPI table
EFI64 system table
EFI memory map
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
wenlingz
parent
52790b5c0e
commit
f3d1823754
@ -142,16 +142,326 @@ static inline void hv_jump(EFI_PHYSICAL_ADDRESS hv_entry, uint32_t mbi, int32_t
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);
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}
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static EFI_STATUS
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fill_e820(HV_LOADER hvld, struct efi_memmap_info *mmap_info,
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struct multiboot_mmap *mmap, int32_t *e820_count)
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{
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EFI_STATUS err = EFI_SUCCESS;
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uint32_t mmap_entry_count = mmap_info->map_size / mmap_info->desc_size;
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int32_t i, j;
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/*
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* Convert the EFI memory map to E820.
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*/
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for (i = 0, j = 0; i < mmap_entry_count && j < MBOOT_MMAP_NUMS - 1; i++) {
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EFI_MEMORY_DESCRIPTOR *d;
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uint32_t e820_type = 0;
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d = (EFI_MEMORY_DESCRIPTOR *)((uint64_t)mmap_info->mmap + \
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(i * mmap_info->desc_size));
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switch(d->Type) {
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case EfiReservedMemoryType:
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case EfiRuntimeServicesCode:
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case EfiRuntimeServicesData:
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case EfiMemoryMappedIO:
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case EfiMemoryMappedIOPortSpace:
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case EfiPalCode:
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e820_type = E820_RESERVED;
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break;
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case EfiUnusableMemory:
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e820_type = E820_UNUSABLE;
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break;
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case EfiACPIReclaimMemory:
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e820_type = E820_ACPI;
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break;
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case EfiLoaderCode:
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case EfiLoaderData:
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case EfiBootServicesCode:
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case EfiBootServicesData:
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case EfiConventionalMemory:
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e820_type = E820_RAM;
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break;
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case EfiACPIMemoryNVS:
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e820_type = E820_NVS;
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break;
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default:
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continue;
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}
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if ((j != 0) && mmap[j-1].mm_type == e820_type &&
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(mmap[j-1].mm_base_addr + mmap[j-1].mm_length)
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== d->PhysicalStart) {
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mmap[j-1].mm_length += d->NumberOfPages << EFI_PAGE_SHIFT;
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} else {
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mmap[j].mm_base_addr = d->PhysicalStart;
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mmap[j].mm_length = d->NumberOfPages << EFI_PAGE_SHIFT;
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mmap[j].mm_type = e820_type;
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j++;
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}
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}
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/*
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* if we haven't gone through all the mmap table entries,
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* there must be a memory overwrite if we continue,
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* so just abort anyway.
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*/
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if (i < mmap_entry_count) {
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Print(L": bios provides %d mmap entries which is beyond limitation[%d]\n",
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mmap_entry_count, MBOOT_MMAP_NUMS-1);
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err = EFI_INVALID_PARAMETER;
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goto out;
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}
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/* switch hv memory region(0x20000000 ~ 0x22000000) to
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* available RAM in e820 table
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*/
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mmap[j].mm_base_addr = hvld->get_hv_hpa(hvld);
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mmap[j].mm_length = hvld->get_hv_ram_size(hvld);
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mmap[j].mm_type = E820_RAM;
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j++;
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mmap[j].mm_base_addr = hvld->get_mod_hpa(hvld);
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mmap[j].mm_length = hvld->get_total_modsize(hvld);
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mmap[j].mm_type = E820_RAM;
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j++;
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*e820_count = j;
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out:
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return err;
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}
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EFI_STATUS construct_mbi(HV_LOADER hvld, struct multiboot_info **mbinfo, struct efi_memmap_info *mmap_info)
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{
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EFI_STATUS err = EFI_SUCCESS;
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return err;
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}
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static struct acpi_table_rsdp *
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search_rsdp()
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{
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unsigned i;
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struct acpi_table_rsdp *rsdp = NULL;
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EFI_CONFIGURATION_TABLE *config_table = sys_table->ConfigurationTable;
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for (i = 0; i < sys_table->NumberOfTableEntries; i++) {
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EFI_GUID acpi_20_table_guid = ACPI_20_TABLE_GUID;
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EFI_GUID acpi_table_guid = ACPI_TABLE_GUID;
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if (CompareGuid(&acpi_20_table_guid,
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&config_table->VendorGuid) == 0) {
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rsdp = config_table->VendorTable;
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break;
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}
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if (CompareGuid(&acpi_table_guid,
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&config_table->VendorGuid) == 0)
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rsdp = config_table->VendorTable;
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config_table++;
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}
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return rsdp;
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}
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static uint32_t
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get_mbi2_size(HV_LOADER hvld, struct efi_memmap_info *mmap_info, uint32_t rsdp_length)
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{
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uint32_t mmap_entry_count = mmap_info->map_size / mmap_info->desc_size;
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return 2 * sizeof(uint32_t) \
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/* Boot command line */
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+ (sizeof(struct multiboot2_tag_string) + \
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ALIGN_UP(hvld->get_boot_cmdsize(hvld), MULTIBOOT2_TAG_ALIGN)) \
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/* Boot loader name */
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+ (sizeof(struct multiboot2_tag_string) + \
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ALIGN_UP(BOOT_LOADER_NAME_SIZE, MULTIBOOT2_TAG_ALIGN)) \
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/* Modules */
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+ (hvld->get_mod_count(hvld) * sizeof(struct multiboot2_tag_module) + \
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hvld->get_total_modcmdsize(hvld)) \
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/* Memory Map */
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+ ALIGN_UP((sizeof(struct multiboot2_tag_mmap) + \
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mmap_entry_count * sizeof(struct multiboot2_mmap_entry)), MULTIBOOT2_TAG_ALIGN) \
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/* ACPI new */
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+ ALIGN_UP(sizeof(struct multiboot2_tag_new_acpi) + \
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rsdp_length, MULTIBOOT2_TAG_ALIGN) \
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/* EFI64 system table */
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+ ALIGN_UP(sizeof(struct multiboot2_tag_efi64), MULTIBOOT2_TAG_ALIGN) \
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/* EFI memmap: Add an extra page since UEFI can alter the memory map */
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+ ALIGN_UP(sizeof(struct multiboot2_tag_efi_mmap) + \
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ALIGN_UP(mmap_info->map_size + 0x1000, 0x1000), MULTIBOOT2_TAG_ALIGN) \
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/* END */
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+ sizeof(struct multiboot2_tag);
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}
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EFI_STATUS
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construct_mbi2(struct hv_loader *hvld, void **mbi_addr, struct efi_memmap_info *mmap_info)
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{
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uint64_t *mbistart;
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uint64_t *p;
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uint32_t mbi2_size;
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struct multiboot_mmap *mmap;
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struct acpi_table_rsdp *rsdp;
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EFI_STATUS err;
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rsdp = search_rsdp();
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if (!rsdp)
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return EFI_NOT_FOUND;
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/* Get size only for mbi size calculation */
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err = get_efi_memmap(mmap_info, 1);
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if (err != EFI_SUCCESS && err != EFI_BUFFER_TOO_SMALL)
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return err;
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mbi2_size = get_mbi2_size(hvld, mmap_info, rsdp->length);
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/* per UEFI spec v2.9: This allocation is guaranteed to be 8-bytes aligned */
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err = allocate_pool(EfiLoaderData, mbi2_size, (void **)&mbistart);
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if (err != EFI_SUCCESS)
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goto out;
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memset(mbistart, 0x0, mbi2_size);
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/* Allocate temp buffer to hold memory map */
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err = allocate_pool(EfiLoaderData,
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(mmap_info->map_size / mmap_info->desc_size) * sizeof(struct multiboot_mmap),
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(void **)&mmap);
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if (err != EFI_SUCCESS)
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goto out;
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/*
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* Get full memory map again.
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* We have just allocated memory and the mmap_info will be different.
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*/
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err = get_efi_memmap(mmap_info, 0);
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if (err != EFI_SUCCESS)
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goto out;
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/* total_size and reserved */
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p = mbistart;
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p += (2 * sizeof(uint32_t)) / sizeof(uint64_t);
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/* Boot command line */
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{
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struct multiboot2_tag_string *tag = (struct multiboot2_tag_string *)p;
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UINTN cmdline_size = hvld->get_boot_cmdsize(hvld);
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tag->type = MULTIBOOT2_TAG_TYPE_CMDLINE;
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tag->size = sizeof(struct multiboot2_tag_string) + cmdline_size;
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memcpy(tag->string, hvld->get_boot_cmd(hvld), cmdline_size);
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p += ALIGN_UP(tag->size, MULTIBOOT2_TAG_ALIGN) / sizeof(uint64_t);
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}
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/* Boot loader name */
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{
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struct multiboot2_tag_string *tag = (struct multiboot2_tag_string *)p;
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tag->type = MULTIBOOT2_TAG_TYPE_BOOT_LOADER_NAME;
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tag->size = sizeof(struct multiboot2_tag_string) + BOOT_LOADER_NAME_SIZE;
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memcpy(tag->string, UEFI_BOOT_LOADER_NAME, BOOT_LOADER_NAME_SIZE);
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p += ALIGN_UP(tag->size, MULTIBOOT2_TAG_ALIGN) / sizeof(uint64_t);
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}
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/* Modules */
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{
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unsigned i;
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uint32_t mod_count = hvld->get_mod_count(hvld);
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for (i = 0; i < mod_count; i++) {
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struct multiboot2_tag_module *tag = (struct multiboot2_tag_module *)p;
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MB_MODULE_INFO *modinfo = hvld->get_mods_info(hvld, i);
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tag->type = MULTIBOOT2_TAG_TYPE_MODULE;
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tag->size = sizeof(struct multiboot2_tag_module) + modinfo->cmdsize;
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tag->mod_start = modinfo->mod_start;
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tag->mod_end = modinfo->mod_end;
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memcpy(tag->cmdline, modinfo->cmd, modinfo->cmdsize);
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p += ALIGN_UP(tag->size, MULTIBOOT2_TAG_ALIGN) / sizeof(uint64_t);
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}
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}
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/* Memory map */
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{
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unsigned i;
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struct multiboot2_tag_mmap *tag = (struct multiboot2_tag_mmap *)p;
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struct multiboot2_mmap_entry *e;
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int32_t e820_count = 0;
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err = fill_e820(hvld, mmap_info, mmap, &e820_count);
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if (err != EFI_SUCCESS)
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goto out;
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tag->type = MULTIBOOT2_TAG_TYPE_MMAP;
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tag->size = sizeof(struct multiboot2_tag_mmap) + sizeof(struct multiboot2_mmap_entry) * e820_count;
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tag->entry_size = sizeof(struct multiboot2_mmap_entry);
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tag->entry_version = 0;
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for (i = 0, e = (struct multiboot2_mmap_entry *)tag->entries; i < e820_count; i++) {
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e->addr = mmap[i].mm_base_addr;
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e->len = mmap[i].mm_length;
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e->type = mmap[i].mm_type;
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e->zero = 0;
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e = (struct multiboot2_mmap_entry *)((char *)e + sizeof(struct multiboot2_mmap_entry));
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}
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p += ALIGN_UP(tag->size, MULTIBOOT2_TAG_ALIGN) / sizeof(uint64_t);
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}
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/* ACPI new */
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{
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struct multiboot2_tag_new_acpi *tag = (struct multiboot2_tag_new_acpi *)p;
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tag->type = MULTIBOOT2_TAG_TYPE_ACPI_NEW;
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tag->size = sizeof(struct multiboot2_tag_new_acpi) + rsdp->length;
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memcpy((char *)tag->rsdp, (char *)rsdp, rsdp->length);
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p += ALIGN_UP(tag->size, MULTIBOOT2_TAG_ALIGN) / sizeof(uint64_t);
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}
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/* EFI64 system table */
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{
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struct multiboot2_tag_efi64 *tag = (struct multiboot2_tag_efi64 *)p;
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tag->type = MULTIBOOT2_TAG_TYPE_EFI64;
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tag->size = sizeof(struct multiboot2_tag_efi64);
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tag->pointer = (uint64_t)sys_table;
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p += ALIGN_UP(tag->size, MULTIBOOT2_TAG_ALIGN) / sizeof(uint64_t);
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}
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/* EFI memory map */
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{
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struct multiboot2_tag_efi_mmap *tag = (struct multiboot2_tag_efi_mmap *)p;
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tag->type = MULTIBOOT2_TAG_TYPE_EFI_MMAP;
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tag->size = sizeof(struct multiboot2_tag_efi_mmap) + mmap_info->map_size;
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tag->descr_size = mmap_info->desc_size;
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tag->descr_vers = mmap_info->desc_version;
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memcpy((char *)tag->efi_mmap, (char *)mmap_info->mmap, mmap_info->map_size);
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p += ALIGN_UP(tag->size, MULTIBOOT2_TAG_ALIGN) / sizeof(uint64_t);
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}
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/* END */
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{
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struct multiboot2_tag *tag = (struct multiboot2_tag *)p;
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tag->type = MULTIBOOT2_TAG_TYPE_END;
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tag->size = sizeof(struct multiboot2_tag);
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p += ALIGN_UP(tag->size, MULTIBOOT2_TAG_ALIGN) / sizeof(uint64_t);
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}
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((uint32_t *)mbistart)[0] = (uint64_t)((char *)p - (char *)mbistart);
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((uint32_t *)mbistart)[1] = 0;
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*mbi_addr = (void *)mbistart;
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return EFI_SUCCESS;
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out:
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free_pool(mbistart);
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return err;
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}
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static EFI_STATUS
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