[RFC PATCH v7 23/23] DO NOT MERGE: only to make CI happy

[Francis Laniel <francis.laniel@amarulasolutions.com>]

This commit set CONFIG_HUSH_PARSER_2021 as the default to trigger the CI with
this parser.

Nonetheless, the keymile (i.e. VENDOR_KM) board family is not compatible with
new 2021 hush parser.
Indeed, This boards used set_local_var() to store some variables as local shell.
They then used get_local_var() to retrieve the variables values.
Sadly, this two functions do not exist with CONFIG_HUSH_PARSER_2021.
A patch was proposed to use environment variables rather than local variables
but it does not tackle the problem, so complementary work is needed to make
this boards use CONFIG_HUSH_PARSER_2021 [1].

We also remove a #undef of CONFIG_FEATURE_SH_STANDALONE as it does not exist in
U-Boot and causes troubles in the CI.

We also set CONFIG_LTO for kirkwoord sheevaplug and phytec bk4r1, otherwise it
hits its board size limit.
By enabling this option, we also had to add assembly for __gnu_thumb1_case_si.
It was taken from upstream gcc and adapted as width suffix was removed for the
add [2].

Signed-off-by: Francis Laniel <francis.laniel@amarulasolutions.com>
[1] https://marc.info/?l=u-boot&m=165541917618725&w=2
[2] https://github.com/gcc-mirror/gcc/blob/4f181f9c7ee3efc509d185fdfda33be9018f1611/libgcc/config/arm/lib1funcs.S#L2156
---
 arch/arm/lib/lib1funcs.S     | 17 +++++++++++++++++
 cmd/Kconfig                  |  3 ++-
 common/cli_hush_upstream.c   |  1 -
 configs/bk4r1_defconfig      |  1 +
 configs/sheevaplug_defconfig |  1 +
 5 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/arch/arm/lib/lib1funcs.S b/arch/arm/lib/lib1funcs.S
index de15d09e36..a1f44d9454 100644
--- a/arch/arm/lib/lib1funcs.S
+++ b/arch/arm/lib/lib1funcs.S
@@ -419,4 +419,21 @@ ENTRY(__gnu_thumb1_case_uhi)
 	ret	lr
 ENDPROC(__gnu_thumb1_case_uhi)
 .popsection
+
+/* Taken and adapted from: https://github.com/gcc-mirror/gcc/blob/4f181f9c7ee3efc509d185fdfda33be9018f1611/libgcc/config/arm/lib1funcs.S#L2156 */
+.pushsection .text.__gnu_thumb1_case_si, "ax"
+ENTRY(__gnu_thumb1_case_si)
+	push	{r0, r1}
+	mov	r1, lr
+	adds	r1, r1, #2	/* Align to word.  */
+	lsrs	r1, r1, #2
+	lsls	r0, r0, #2
+	lsls	r1, r1, #2
+	ldr	r0, [r1, r0]
+	adds	r0, r0, r1
+	mov	lr, r0
+	pop	{r0, r1}
+	mov	pc, lr		/* We know we were called from thumb code.  */
+ENDPROC(__gnu_thumb1_case_si)
+.popsection
 #endif
diff --git a/cmd/Kconfig b/cmd/Kconfig
index 1b9d04680d..d4809fcfa4 100644
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -28,7 +28,7 @@ menu "Hush flavor to use"
 
 	config HUSH_OLD_PARSER
 		bool "Use hush old parser"
-		default y
+		default y if VENDOR_KM
 		help
 		  This option enables the old flavor of hush based on hush Busybox from
 		  2005.
@@ -37,6 +37,7 @@ menu "Hush flavor to use"
 
 	config HUSH_2021_PARSER
 		bool "Use hush 2021 parser"
+		default y if !VENDOR_KM
 		help
 		  This option enables the new flavor of hush based on hush Busybox from
 		  2021.
diff --git a/common/cli_hush_upstream.c b/common/cli_hush_upstream.c
index 93796e87c5..78a13eeb62 100644
--- a/common/cli_hush_upstream.c
+++ b/common/cli_hush_upstream.c
@@ -427,7 +427,6 @@
 #include "NUM_APPLETS.h"
 #if NUM_APPLETS == 1
 /* STANDALONE does not make sense, and won't compile */
-# undef CONFIG_FEATURE_SH_STANDALONE
 # undef ENABLE_FEATURE_SH_STANDALONE
 # undef IF_FEATURE_SH_STANDALONE
 # undef IF_NOT_FEATURE_SH_STANDALONE
diff --git a/configs/bk4r1_defconfig b/configs/bk4r1_defconfig
index 66adeac725..95f0c30cde 100644
--- a/configs/bk4r1_defconfig
+++ b/configs/bk4r1_defconfig
@@ -18,6 +18,7 @@ CONFIG_TARGET_BK4R1=y
 CONFIG_SYS_LOAD_ADDR=0x82000000
 CONFIG_SYS_MEMTEST_START=0x80010000
 CONFIG_SYS_MEMTEST_END=0x87c00000
+CONFIG_LTO=y
 CONFIG_HAS_BOARD_SIZE_LIMIT=y
 CONFIG_BOARD_SIZE_LIMIT=520192
 CONFIG_FIT=y
diff --git a/configs/sheevaplug_defconfig b/configs/sheevaplug_defconfig
index 2e4901b840..365f779cc8 100644
--- a/configs/sheevaplug_defconfig
+++ b/configs/sheevaplug_defconfig
@@ -16,6 +16,7 @@ CONFIG_ENV_OFFSET=0x80000
 CONFIG_DEFAULT_DEVICE_TREE="kirkwood-sheevaplug"
 CONFIG_IDENT_STRING="\nMarvell-Sheevaplug"
 CONFIG_SYS_LOAD_ADDR=0x800000
+CONFIG_LTO=y
 CONFIG_HAS_BOARD_SIZE_LIMIT=y
 CONFIG_BOARD_SIZE_LIMIT=524288
 CONFIG_BOOTDELAY=3
-- 
2.34.1