[PATCH] image: Add support for ZSTD decompression

[Tom Rini]

On Sun, May 03, 2020 at 12:24:14PM +0200, Robert Marko wrote:
> Hi,
> 
> I checked and SPL_ZSTD symbol already exists.
> But trying to use #if CONFIG_IS_ENABLED(ZSTD) inside
> of the switch case will fail with the preprocessor error:
> In file included from tools/common/image.c:1:

Ah right, oops.

> > ./tools/../common/image.c: In function ‘image_decomp’:
> > ./tools/../common/image.c:510:22: error: missing binary operator before
> > token "("
> >   510 | #if CONFIG_IS_ENABLED(ZSTD)
> 
> 
> Outside of the switch_case it works fine

Sounds like <linux/kconfig.h> needs an explicit #include then.

> 
> 
> On Fri, May 1, 2020 at 6:42 PM Tom Rini <trini at konsulko.com> wrote:
> 
> > On Fri, May 01, 2020 at 05:15:41PM +0200, Robert Marko wrote:
> > > On Fri, May 1, 2020 at 4:56 PM Tom Rini <trini at konsulko.com> wrote:
> > > >
> > > > On Sat, Apr 25, 2020 at 07:37:21PM +0200, Robert Marko wrote:
> > > >
> > > > > This patch adds support for ZSTD decompression of FIT images.
> > > > >
> > > > > Signed-off-by: Robert Marko <robert.marko at sartura.hr>
> > > > > Cc: Luka Perkov <luka.perkov at sartura.hr>
> > > > > ---
> > > > >  common/image.c  | 52
> > +++++++++++++++++++++++++++++++++++++++++++++++++
> > > > >  include/image.h |  1 +
> > > > >  2 files changed, 53 insertions(+)
> > > > >
> > > > > diff --git a/common/image.c b/common/image.c
> > > > > index 94873cb6ed..70ba0f4328 100644
> > > > > --- a/common/image.c
> > > > > +++ b/common/image.c
> > > > > @@ -42,6 +42,7 @@
> > > > >  #include <lzma/LzmaTypes.h>
> > > > >  #include <lzma/LzmaDec.h>
> > > > >  #include <lzma/LzmaTools.h>
> > > > > +#include <linux/zstd.h>
> > > > >
> > > > >  #ifdef CONFIG_CMD_BDI
> > > > >  extern int do_bdinfo(cmd_tbl_t *cmdtp, int flag, int argc, char *
> > const argv[]);
> > > > > @@ -193,6 +194,7 @@ static const table_entry_t uimage_comp[] = {
> > > > >       {       IH_COMP_LZMA,   "lzma",         "lzma compressed",
> >   },
> > > > >       {       IH_COMP_LZO,    "lzo",          "lzo compressed",
> >  },
> > > > >       {       IH_COMP_LZ4,    "lz4",          "lz4 compressed",
> >  },
> > > > > +     {       IH_COMP_ZSTD,   "zstd",         "zstd compressed",
> >   },
> > > > >       {       -1,             "",             "",
> >  },
> > > > >  };
> > > > >
> > > > > @@ -480,6 +482,56 @@ int image_decomp(int comp, ulong load, ulong
> > image_start, int type,
> > > > >               break;
> > > > >       }
> > > > >  #endif /* CONFIG_LZ4 */
> > > > > +#ifdef CONFIG_ZSTD
> > > >
> > > > We need to add SPL_ZSTD as a symbol to lib/Kconfig and then use
> > > > CONFIG_IS_ENABLED() tests here to avoid growth in SPL.  Thanks!
> > > Hi,
> > > is that something that I need to do or?
> >
> > Yes.  You need to add the symbol, and then the code you're adding needs
> > to make use of '#if CONFIG_IS_ENABLED(ZSTD)' rather than '#ifdef
> > CONFIG_ZSTD'.  Sorry for not being clear enough.
> >
> > --
> > Tom
> >

-- 
Tom
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