[PATCH] efi: Do not import certificates from UEFI Secure Boot for T2 Macs

[Aditya Garg]

> On 09-Feb-2022, at 9:09 PM, David Laight <David.Laight at ACULAB.COM> wrote:
> 
> From: Aditya Garg
>> Sent: 09 February 2022 14:28
>> 
>> On T2 Macs, the secure boot is handled by the T2 Chip. If enabled, only
>> macOS and Windows are allowed to boot on these machines. Thus we need to
>> disable secure boot for Linux. If we boot into Linux after disabling
>> secure boot, if CONFIG_LOAD_UEFI_KEYS is enabled, EFI Runtime services
>> fail to start, with the following logs in dmesg
>> 
> ..
>> +static const struct dmi_system_id uefi_apple_ignore[] = {
>> +	{
>> +		 .matches = {
>> +			DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
>> +			DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro15,1"),
>> +		},
> 
> I think I'd use:
> #define xxx(vendor, product) \
> 		 .matches = {
> 			DMI_MATCH(DMI_BOARD_VENDOR, vendor), \
> 			DMI_MATCH(DMI_PRODUCT_NAME, product), \
> 		}
> somewhere with a suitable name (bikeshed blue) to reduce
> the code size of this table.
> 
Alright, I’ll send a v2 with this addressed.
> 	David
> 
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