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efi_selftest: testing read-only variables

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The UEFI spec has this sentence:
"Variables that have runtime access but that are not nonvolatile are
read-only data variables once ExitBootServices() is performed."

At least EDK2 therefore treats variable PlatformLangCodes only as read-only
at runtime. Nowhere do we make this variable read-only in U-Boot.

Do not use variable PlatformLangCodes for testing if the read only
attribute of variables is observed before ExitBootServices().

Fixes: 5a24239c95 ("efi_loader: selftest: enable APPEND_WRITE tests")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Heinrich Schuchardt 2019-09-26 22:10:25 +02:00
parent c9dd62f9c2
commit 1b7313d91f
1 changed files with 0 additions and 11 deletions
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11
lib/efi_selftest/efi_selftest_variables.c
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@ -21,9 +21,6 @@ static const efi_guid_t guid_vendor0 =
static const efi_guid_t guid_vendor1 =
EFI_GUID(0xff629290, 0x1fc1, 0xd73f,
0x8f, 0xb1, 0x32, 0xf9, 0x0c, 0xa0, 0x42, 0xea);
static const efi_guid_t guid_global =
EFI_GUID(0x8be4df61, 0x93ca, 0x11d2,
0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c);
/*
* Setup unit test.
@ -143,14 +140,6 @@ static int execute(void)
efi_st_error("SetVariable(APPEND_WRITE) with size 0 to non-existent variable returns wrong code\n");
return EFI_ST_FAILURE;
}
/* Append variable 3 */
ret = runtime->set_variable(L"PlatformLangCodes", &guid_global,
EFI_VARIABLE_BOOTSERVICE_ACCESS |
EFI_VARIABLE_RUNTIME_ACCESS |
EFI_VARIABLE_APPEND_WRITE,
15, v);
if (ret != EFI_WRITE_PROTECTED)
efi_st_todo("SetVariable(APPEND_WRITE) to read-only variable returns wrong code\n");
/* Enumerate variables */
boottime->set_mem(&guid, 16, 0);
*varname = 0;