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Report the boot order and where we are in that boot order. Add

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ability to create a boot1.efi that always fails for testing purposes
and failover scenarios.

Sponsored by: Netflix
This commit is contained in:
Warner Losh 2018-01-12 15:30:56 +00:00
parent 1e13416bb9
commit 8d578b39fd
1 changed files with 45 additions and 2 deletions
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47
stand/efi/boot1/boot1.c
View file

@ -55,6 +55,7 @@ static EFI_GUID DevicePathGUID = DEVICE_PATH_PROTOCOL;
static EFI_GUID LoadedImageGUID = LOADED_IMAGE_PROTOCOL;
static EFI_GUID ConsoleControlGUID = EFI_CONSOLE_CONTROL_PROTOCOL_GUID;
static EFI_GUID FreeBSDBootVarGUID = FREEBSD_BOOT_VAR_GUID;
static EFI_GUID GlobalBootVarGUID = UEFI_BOOT_VAR_GUID;
/*
* Provide Malloc / Free backed by EFIs AllocatePool / FreePool which ensures
@ -79,6 +80,25 @@ Free(void *buf, const char *file __unused, int line __unused)
(void)BS->FreePool(buf);
}
static EFI_STATUS
efi_getenv(EFI_GUID *g, const char *v, void *data, size_t *len)
{
size_t ul;
CHAR16 *uv;
UINT32 attr;
UINTN dl;
EFI_STATUS rv;
utf8_to_ucs2(v, &uv, &ul);
if (uv == NULL)
return (EFI_OUT_OF_RESOURCES);
dl = *len;
rv = RS->GetVariable(uv, g, &attr, &dl, data);
if (rv == EFI_SUCCESS)
*len = dl;
return (rv);
}
static EFI_STATUS
efi_setenv_freebsd_wcs(const char *varname, CHAR16 *valstr)
{
@ -411,6 +431,9 @@ efi_main(EFI_HANDLE Ximage, EFI_SYSTEM_TABLE *Xsystab)
SIMPLE_TEXT_OUTPUT_INTERFACE *conout = NULL;
UINTN i, max_dim, best_mode, cols, rows, hsize, nhandles;
CHAR16 *text;
UINT16 boot_current;
size_t sz;
UINT16 boot_order[100];
/* Basic initialization*/
ST = Xsystab;
@ -480,12 +503,32 @@ efi_main(EFI_HANDLE Ximage, EFI_SYSTEM_TABLE *Xsystab)
}
}
boot_current = 0;
sz = sizeof(boot_current);
efi_getenv(&GlobalBootVarGUID, "BootCurrent", &boot_current, &sz);
printf(" BootCurrent: %04x\n", boot_current);
sz = sizeof(boot_order);
efi_getenv(&GlobalBootVarGUID, "BootOrder", &boot_order, &sz);
printf(" BootOrder:");
for (i = 0; i < sz / sizeof(boot_order[0]); i++)
printf(" %04x", boot_order[i]);
printf("\n");
#ifdef TEST_FAILURE
/*
* For testing failover scenarios, it's nice to be able to fail fast.
* Define TEST_FAILURE to create a boot1.efi that always fails after
* reporting the boot manager protocol details.
*/
BS->Exit(IH, EFI_OUT_OF_RESOURCES, 0, NULL);
#endif
/* Get all the device handles */
hsize = (UINTN)NUM_HANDLES_INIT * sizeof(EFI_HANDLE);
handles = malloc(hsize);
if (handles == NULL) {
if (handles == NULL)
printf("Failed to allocate %d handles\n", NUM_HANDLES_INIT);
}
status = BS->LocateHandle(ByProtocol, &BlockIoProtocolGUID, NULL,
&hsize, handles);