[U-Boot] [RFC] efi: workaround for SCT (against unicode collation protocol)

[Dong Wei]

Copying UTWG....

Sent from my iPhone

> On Oct 1, 2018, at 12:49 AM, Alexander Graf <agraf at suse.de> wrote:
>
>
>
>> On 01.10.18 09:35, AKASHI Takahiro wrote:
>> UEFI SCT doesn't run on the latest u-boot (or Alex's efi-next).
>> Among other issues, there are two problems around language handling:
>> 1. SCT looks for efi_unicode_collation_protocol with an (old?) guid,
>>    {0x1d85cd7f, 0xf43d, 0x11d2,
>>     0x9a, 0x0c, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
>> 2. SCT uses a hard-coded language name, "eng," in SctInializeLib()
>>
>> These assumptions conflict with Heinrich's current unicode implementation.
>>
>> While this patch fixes them in a quick way, it's more of an informative
>> one so that we will share and discuss them.
>
> FWIW the collation protocol v1 is considered deprecated pretty much
> since UEFI - and same goes for the "eng" name which is the v1
> representation of "English".
>
> I had a similar patch in my queue, but after consultation with Heinrich
> we agreed that we should be a clean UEFI implementation without too much
> legacy. What the goal instead should be is to help the UEFI people to
> fix SCT to no longer require deprecated protocols.
>
> I've thus added Vincent and Dong for input :).
>
>
> Thanks,
>
> Alex
>
>>
>> Signed-off-by: AKASHI Takahiro <takahiro.akashi at linaro.org>
>> ---
>> include/efi_api.h                      |  3 +++
>> include/efi_loader.h                   |  3 +++
>> lib/efi_loader/efi_root_node.c         |  2 ++
>> lib/efi_loader/efi_unicode_collation.c | 13 +++++++++++++
>> 4 files changed, 21 insertions(+)
>>
>> diff --git a/include/efi_api.h b/include/efi_api.h
>> index daaaa78d72b0..841b680581c0 100644
>> --- a/include/efi_api.h
>> +++ b/include/efi_api.h
>> @@ -1262,6 +1262,9 @@ struct efi_driver_binding_protocol {
>>    efi_handle_t driver_binding_handle;
>> };
>>
>> +#define EFI_UNICODE_COLLATION_PROTOCOL_GUID \
>> +    EFI_GUID(0x1d85cd7f, 0xf43d, 0x11d2, \
>> +         0x9a, 0x0c, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
>> #define EFI_UNICODE_COLLATION_PROTOCOL2_GUID \
>>    EFI_GUID(0xa4c751fc, 0x23ae, 0x4c3e, \
>>         0x92, 0xe9, 0x49, 0x64, 0xcf, 0x63, 0xf3, 0x49)
>> diff --git a/include/efi_loader.h b/include/efi_loader.h
>> index c8760bebd6bc..2d99eba15e32 100644
>> --- a/include/efi_loader.h
>> +++ b/include/efi_loader.h
>> @@ -104,6 +104,8 @@ extern const struct efi_device_path_to_text_protocol efi_device_path_to_text;
>> extern const struct efi_device_path_utilities_protocol
>>                    efi_device_path_utilities;
>> /* Implementation of the EFI_UNICODE_COLLATION_PROTOCOL */
>> +extern const struct efi_unicode_collation_protocol
>> +                    efi_unicode_collation_protocol_eng;
>> extern const struct efi_unicode_collation_protocol
>>                    efi_unicode_collation_protocol;
>> extern const struct efi_hii_config_routing_protocol efi_hii_config_routing;
>> @@ -142,6 +144,7 @@ extern const efi_guid_t efi_file_system_info_guid;
>> extern const efi_guid_t efi_guid_device_path_utilities_protocol;
>> /* GUID of the Unicode collation protocol */
>> extern const efi_guid_t efi_guid_unicode_collation_protocol;
>> +extern const efi_guid_t efi_guid_unicode_collation_protocol2;
>> extern const efi_guid_t efi_guid_hii_config_routing_protocol;
>> extern const efi_guid_t efi_guid_hii_database_protocol;
>> extern const efi_guid_t efi_guid_hii_string_protocol;
>> diff --git a/lib/efi_loader/efi_root_node.c b/lib/efi_loader/efi_root_node.c
>> index b056ba3ee880..aadb47aba1cd 100644
>> --- a/lib/efi_loader/efi_root_node.c
>> +++ b/lib/efi_loader/efi_root_node.c
>> @@ -70,6 +70,8 @@ efi_status_t efi_root_node_register(void)
>>
>>    /* Install Unicode collation protocol */
>>    ret = efi_add_protocol(root, &efi_guid_unicode_collation_protocol,
>> +                   (void *)&efi_unicode_collation_protocol_eng);
>> +    ret = efi_add_protocol(root, &efi_guid_unicode_collation_protocol2,
>>                   (void *)&efi_unicode_collation_protocol);
>>    if (ret != EFI_SUCCESS)
>>        goto failure;
>> diff --git a/lib/efi_loader/efi_unicode_collation.c b/lib/efi_loader/efi_unicode_collation.c
>> index 7f3ea3c77e4e..932feb3a9984 100644
>> --- a/lib/efi_loader/efi_unicode_collation.c
>> +++ b/lib/efi_loader/efi_unicode_collation.c
>> @@ -28,6 +28,8 @@ static const u16 codepage[] = CP437;
>>
>> /* GUID of the EFI_UNICODE_COLLATION_PROTOCOL */
>> const efi_guid_t efi_guid_unicode_collation_protocol =
>> +    EFI_UNICODE_COLLATION_PROTOCOL_GUID;
>> +const efi_guid_t efi_guid_unicode_collation_protocol2 =
>>    EFI_UNICODE_COLLATION_PROTOCOL2_GUID;
>>
>> /**
>> @@ -318,6 +320,17 @@ static bool EFIAPI efi_str_to_fat(struct efi_unicode_collation_protocol *this,
>>    return ret;
>> }
>>
>> +const
>> +struct efi_unicode_collation_protocol efi_unicode_collation_protocol_eng = {
>> +    .stri_coll = efi_stri_coll,
>> +    .metai_match = efi_metai_match,
>> +    .str_lwr = efi_str_lwr,
>> +    .str_upr = efi_str_upr,
>> +    .fat_to_str = efi_fat_to_str,
>> +    .str_to_fat = efi_str_to_fat,
>> +    .supported_languages = "eng",
>> +};
>> +
>> const struct efi_unicode_collation_protocol efi_unicode_collation_protocol = {
>>    .stri_coll = efi_stri_coll,
>>    .metai_match = efi_metai_match,
>>
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