xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

efi: Merge EFI system table revision and vendor checks

Browse Source 
We have three different versions of the code that checks the EFI system
table revision and copies the firmware vendor string, and they are
mostly equivalent, with the exception of the use of early_memremap_ro
vs. __va() and the lowest major revision to warn about. Let's move this
into common code and factor out the commonalities.

Tested-by: Tony Luck <tony.luck@intel.com> # arch/ia64
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
This commit is contained in:
Ard Biesheuvel
2020-01-20 10:49:11 +01:00
parent b7846e6be2
commit 14fb420909
5 changed files with 83 additions and 83 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
arch/ia64/kernel/efi.c
View File

@@ -479,10 +479,8 @@ void __init
efi_init (void)
{
void *efi_map_start, *efi_map_end;
efi_char16_t *c16;
u64 efi_desc_size;
char *cp, vendor[100] = "unknown";
int i;
char *cp;
set_bit(EFI_BOOT, &efi.flags);
set_bit(EFI_64BIT, &efi.flags);
@@ -519,25 +517,10 @@ efi_init (void)
*/
if (efi.systab == NULL)
panic("Whoa! Can't find EFI system table.\n");
if (efi.systab->hdr.signature != EFI_SYSTEM_TABLE_SIGNATURE)
if (efi_systab_check_header(&efi.systab->hdr, 1))
panic("Whoa! EFI system table signature incorrect\n");
if ((efi.systab->hdr.revision >> 16) == 0)
printk(KERN_WARNING "Warning: EFI system table version "
"%d.%02d, expected 1.00 or greater\n",
efi.systab->hdr.revision >> 16,
efi.systab->hdr.revision & 0xffff);
/* Show what we know for posterity */
c16 = __va(efi.systab->fw_vendor);
if (c16) {
for (i = 0;i < (int) sizeof(vendor) - 1 && *c16; ++i)
vendor[i] = *c16++;
vendor[i] = '\0';
}
printk(KERN_INFO "EFI v%u.%.02u by %s:",
efi.systab->hdr.revision >> 16,
efi.systab->hdr.revision & 0xffff, vendor);
efi_systab_report_header(&efi.systab->hdr, efi.systab->fw_vendor);
palo_phys = EFI_INVALID_TABLE_ADDR;