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Permit loading of efirt module even when there's no EFI to call. The

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module loading is successful, but attempts to use it will not be
successful. This is similar to what we do (did?) with ACPI on non-ACPI
systems. We succeed if we can't find the necessary information to hook
into EFI, but still fail if we're unable to allocate resources if we
do find EFI.

Not Objected to by: kib@
MFC Afer: 3 days
This commit is contained in:
Warner Losh 2016-12-09 23:37:11 +00:00
parent beced2eabd
commit 8bece6062d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=309776
1 changed files with 3 additions and 3 deletions
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6
sys/amd64/amd64/efirt.c
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@ -355,14 +355,14 @@ efi_init(void)
if (efi_systbl_phys == 0) {
if (bootverbose)
printf("EFI systbl not available\n");
return (ENXIO);
return (0);
}
efi_systbl = (struct efi_systbl *)PHYS_TO_DMAP(efi_systbl_phys);
if (efi_systbl->st_hdr.th_sig != EFI_SYSTBL_SIG) {
efi_systbl = NULL;
if (bootverbose)
printf("EFI systbl signature invalid\n");
return (ENXIO);
return (0);
}
efi_cfgtbl = (efi_systbl->st_cfgtbl == 0) ? NULL :
(struct efi_cfgtbl *)efi_systbl->st_cfgtbl;
@ -379,7 +379,7 @@ efi_init(void)
if (efihdr == NULL) {
if (bootverbose)
printf("EFI map is not present\n");
return (ENXIO);
return (0);
}
efisz = (sizeof(struct efi_map_header) + 0xf) & ~0xf;
map = (struct efi_md *)((uint8_t *)efihdr + efisz);