[PATCH 3/3] common: don't allow compressing in-barebox binaries again

[Ahmad Fatoum <a.fatoum@pengutronix.de>]

For barebox with a prebootloader, we can compress barebox proper as a
whole and it makes no sense to compress the environment on its own
again. The choice already defaulted to this, but the user could still
override it. Ensure that this double compression can't happen.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
 common/Kconfig | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/common/Kconfig b/common/Kconfig
index f1f0b4fab91c..ac23fa7f4419 100644
--- a/common/Kconfig
+++ b/common/Kconfig
@@ -869,29 +869,30 @@ choice
 	default DEFAULT_COMPRESSION_LZ4 if LZ4_DECOMPRESS
 	default DEFAULT_COMPRESSION_BZIP2 if BZLIB
 	help
-	  Select the default compression for in-barebox binary files. Files
-	  compiled into barebox like for example the default environment will
-	  be compressed with this compression type.
+	  For barebox builds without a prebootloader, select here the default
+	  compression for in-barebox binary files. barebox itself can't be
+	  compressed without a prebootloader, but for example the default
+	  environment will be compressed with this compression type.
 
 config DEFAULT_COMPRESSION_GZIP
 	bool "gzip"
-	depends on ZLIB
+	depends on !PBL_IMAGE && ZLIB
 
 config DEFAULT_COMPRESSION_BZIP2
 	bool "bzip2"
-	depends on BZLIB
+	depends on !PBL_IMAGE && BZLIB
 
 config DEFAULT_COMPRESSION_LZO
 	bool "lzo"
-	depends on LZO_DECOMPRESS
+	depends on !PBL_IMAGE && LZO_DECOMPRESS
 
 config DEFAULT_COMPRESSION_LZ4
 	bool "lz4"
-	depends on LZ4_DECOMPRESS
+	depends on !PBL_IMAGE && LZ4_DECOMPRESS
 
 config DEFAULT_COMPRESSION_XZ
 	bool "xz"
-	depends on XZ_DECOMPRESS
+	depends on !PBL_IMAGE && XZ_DECOMPRESS
 
 config DEFAULT_COMPRESSION_NONE
 	bool "no compression"
-- 
2.30.2