[U-Boot] [PATCH 11/15] efi_loader: capitalization table

[Alexander Graf]

> Am 27.08.2018 um 10:30 schrieb Mike FABIAN <maiku.fabian at gmail.com>:
> 
> Alexander Graf <agraf at suse.de> さんは書きました:
> 
>>> On 26.08.18 21:00, Heinrich Schuchardt wrote:
>>>> On 08/26/2018 08:22 PM, Alexander Graf wrote:
>>>> 
>>>> 
>>>>> On 11.08.18 17:28, Heinrich Schuchardt wrote:
>>>>> This patch provides a define to initialize a table that maps lower to
>>>>> capital letters for Unicode code point 0x0000 - 0xffff.
>>>>> 
>>>>> Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
>>>>> ---
>>>>> MAINTAINERS              |    1 +
>>>>> include/capitalization.h | 1909 ++++++++++++++++++++++++++++++++++++++
>>>>> 2 files changed, 1910 insertions(+)
>>>>> create mode 100644 include/capitalization.h
>>>>> 
>>>>> diff --git a/MAINTAINERS b/MAINTAINERS
>>>>> index a324139471..0a543309f2 100644
>>>>> --- a/MAINTAINERS
>>>>> +++ b/MAINTAINERS
>>>>> @@ -368,6 +368,7 @@ F:    doc/DocBook/efi.tmpl
>>>>> F:    doc/README.uefi
>>>>> F:    doc/README.iscsi
>>>>> F:    Documentation/efi.rst
>>>>> +F:    include/capitalization.h
>>>>> F:    include/efi*
>>>>> F:    include/pe.h
>>>>> F:    include/asm-generic/pe.h
>>>>> diff --git a/include/capitalization.h b/include/capitalization.h
>>>>> new file mode 100644
>>>>> index 0000000000..50d5108f98
>>>>> --- /dev/null
>>>>> +++ b/include/capitalization.h
>>>>> @@ -0,0 +1,1909 @@
>>>>> +/* SPDX-License-Identifier: Unicode-DFS-2016 */
>>>>> +/*
>>>>> + * Correspondence table for small and capital Unicode letters in the range of
>>>>> + * 0x0000 - 0xffff based on http://www.unicode.org/Public/UCA/11.0.0/allkeys.txt
>>>>> + */
>>>>> +
>>>>> +struct capitalization_table {
>>>>> +    u16 upper;
>>>>> +    u16 lower;
>>>>> +};
>>>>> +
>>>>> +#define UNICODE_CAPITALIZATION_TABLE { \
>>>> 
>>>> Ugh, that is a *lot* of data. How much does the binary size grow with
>>>> the table compiled in?
> 
> That data is also in glibc. I don’t know whether you use glibc though
> ...

U-Boot is a standalone OS so to say, we do not use glibc (except for sandbox, but that's a special target).

The main problem is that some times people cram U-Boot into very tight spaces, like small flash chips or even on-chip RAM. So we have to be very cautious on space requirements.

Alex