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misc: efi-stub: Implement modules loading in container 

This patch implements the container_load_modules function.
This function loads multiboot modules following multiboot protocol.

Tracked-On: #6241
Signed-off-by: Toshiki Nishioka <toshiki.nishioka@intel.com>
Signed-off-by: Yifan Liu <yifan1.liu@intel.com>
This commit is contained in:
Yifan Liu 2021-06-22 17:09:15 +08:00 committed by wenlingz
parent e0f69399ff
commit c2217aa5d4
1 changed files with 55 additions and 0 deletions
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55
misc/efi-stub/container.c
View File

@ -327,6 +327,61 @@ out:
static EFI_STATUS container_load_modules(HV_LOADER hvld)
{
EFI_STATUS err = EFI_SUCCESS;
struct container *ctr = (struct container *)hvld;
UINTN i, j;
UINT8 * p = NULL;
LOADER_COMPRESSED_HEADER *lzh = NULL;
LOADER_COMPRESSED_HEADER *cmd_lzh = NULL;
/* scan module headers to calculate required memory size to store files */
for (i = LZH_MOD0_CMD; i < ctr->lzh_count - 1; i++) {
if ((i % 2) == 0) { /* vm0_tag.txt, vm1_tag.txt, acpi_vm0.txt ... */
ctr->total_modcmdsize += ctr->lzh_ptr[i]->Size;
} else { /* vm0_kernel, vm1_kernel, vm0_acpi.bin ... */
ctr->total_modsize += ALIGN_UP(ctr->lzh_ptr[i]->Size, EFI_PAGE_SIZE);
}
}
/* exclude hypervisor and SBL signature files. e.g.)
* lzh_count = 9 (hv_cmdline, acrn.32.out, vm0_tag, vm0_kernel, vm1_tag, vm1_kernel, vm0_acpi_tag, vm0_acpi, sig)
* mod_count = 3 (vm0_tag + vm0_kernel, vm1_tag + vm1_kernel, vm0_acpi_tag + vm0_acpi)
*/
ctr->mod_count = (ctr->lzh_count - 3) / 2;
if (ctr->mod_count >= MAX_MODULE_COUNT) {
Print(L"Too many modules: 0x%x\n", ctr->mod_count);
return EFI_INVALID_PARAMETER;
}
/* allocate single memory region to store all binary files to avoid mmap fragmentation */
if (ctr->reloc) {
err = emalloc_reserved_aligned(&(ctr->mod_hpa), ctr->total_modsize,
EFI_PAGE_SIZE, ctr->reloc->min_addr, ctr->reloc->max_addr);
} else {
/* We put modules after hv */
UINTN hv_ram_size = ctr->laddr->load_end_addr - ctr->laddr->load_addr;
err = emalloc_fixed_addr(&(ctr->mod_hpa), hv_ram_size, ctr->hv_hpa + ALIGN_UP(hv_ram_size, EFI_PAGE_SIZE));
}
if (err != EFI_SUCCESS) {
Print(L"Failed to allocate memory for modules %r\n", err);
goto out;
}
p = (UINT8 *)ctr->mod_hpa;
for (i = LZH_BOOT_IMG + 2, j = 0; i < ctr->lzh_count - 1; i = i + 2) {
lzh = ctr->lzh_ptr[i];
cmd_lzh = ctr->lzh_ptr[i - 1];
memcpy((char *)p, (const char *)lzh->Data, lzh->Size);
ctr->mod_info[j].mod_start = (EFI_PHYSICAL_ADDRESS)p;
ctr->mod_info[j].mod_end = (EFI_PHYSICAL_ADDRESS)p + lzh->Size;
ctr->mod_info[j].cmd = (const char *)cmd_lzh->Data;
ctr->mod_info[j].cmdsize = cmd_lzh->Size;
p += ALIGN_UP(lzh->Size, EFI_PAGE_SIZE);
j++;
}
out:
return err;
}