stm32 fixes

package/busybox/Config.in.manual

@@ -116,18 +116,14 @@ config ADK_PACKAGE_BUSYBOX_MINIMAL
 	select BUSYBOX_DIFF
 	select BUSYBOX_DU
 	select BUSYBOX_ECHO
-	select BUSYBOX_EGREP if !BUSYBOX_DISABLE_GREP
 	select BUSYBOX_ENV
 	select BUSYBOX_EXPR
 	select BUSYBOX_FIND if !BUSYBOX_DISABLE_FIND
 	select BUSYBOX_GREP if !BUSYBOX_DISABLE_GREP
-	select BUSYBOX_GUNZIP
-	select BUSYBOX_GZIP
 	select BUSYBOX_HALT
 	select BUSYBOX_HEAD
 	select BUSYBOX_ID
-	select BUSYBOX_INIT if ADK_RUNTIME_INIT_SYSV
-	select BUSYBOX_LESS if !BUSYBOX_DISABLE_LESS
+	select BUSYBOX_INIT
 	select BUSYBOX_LN
 	select BUSYBOX_LS
 	select BUSYBOX_MKDIR
@@ -142,7 +138,6 @@ config ADK_PACKAGE_BUSYBOX_MINIMAL
 	select BUSYBOX_TAIL
 	select BUSYBOX_FEATURE_FANCY_TAIL
 	select BUSYBOX_TEE
-	select BUSYBOX_TAR if !BUSYBOX_DISABLE_TAR
 	select BUSYBOX_TEST
 	select BUSYBOX_TOUCH
 	select BUSYBOX_TRUE

scripts/flash.sh

@@ -0,0 +1,26 @@
+#!/bin/bash
+
+OUTPUT_DIR=$1
+BOARD_NAME=${2:-stm32f429disc1}
+
+if ! test -d "${OUTPUT_DIR}" ; then
+    echo "ERROR: no output directory specified."
+    echo "Usage: $0 OUTPUT_DIR BOARD_NAME"
+    echo ""
+    echo "Arguments:"
+    echo "    OUTPUT_DIR    The Buildroot output directory."
+    echo "    BOARD_NAME    One of the available boards among:"
+    echo "                  stm32f429discovery, stm32f429disc1"
+    exit 1
+fi
+
+./host_x86_64-linux-gnu/usr/bin/openocd -f board/${BOARD_NAME}.cfg \
+  -c "init" \
+  -c "reset init" \
+  -c "flash probe 0" \
+  -c "flash info 0" \
+  -c "flash write_image erase ${OUTPUT_DIR}/stm32f429i-disco.bin 0x08000000" \
+  -c "flash write_image erase ${OUTPUT_DIR}/stm32f429-disco.dtb 0x08004000" \
+  -c "flash write_image erase ${OUTPUT_DIR}/st-stm32f429-initramfspiggyback-kernel 0x08008000" \
+  -c "reset run" \
+  -c "shutdown"

target/linux/Config.in.kernelcfg

@@ -44,6 +44,8 @@ config ADK_TARGET_LINUX_KERNEL_DEFCONFIG
 	default "edosk2674_defconfig" if ADK_TARGET_SYSTEM_HITACHI_EDOSK2674
 	default "x86_64_defconfig" if ADK_TARGET_SYSTEM_GENERIC_X86_64
 	default "i386_defconfig" if ADK_TARGET_SYSTEM_GENERIC_X86
+	default "stm32_defconfig" if ADK_TARGET_SYSTEM_ST_STM32F429
+	default "stm32_defconfig" if ADK_TARGET_SYSTEM_ST_STM32F769
 	default ""
 
 config ADK_TARGET_LINUX_KERNEL_CUSTOMCONFIG_PATH

target/linux/patches/4.9.257/stm32.patch

@@ -0,0 +1,12 @@
+diff -Nur linux-4.9.257.orig/arch/arm/boot/dts/stm32f429-disco.dts linux-4.9.257/arch/arm/boot/dts/stm32f429-disco.dts
+--- linux-4.9.257.orig/arch/arm/boot/dts/stm32f429-disco.dts	2021-02-10 09:09:27.000000000 +0100
++++ linux-4.9.257/arch/arm/boot/dts/stm32f429-disco.dts	2021-04-09 20:08:56.113152788 +0200
+@@ -53,7 +53,7 @@
+ 	compatible = "st,stm32f429i-disco", "st,stm32f429";
+ 
+ 	chosen {
+-		bootargs = "root=/dev/ram rdinit=/linuxrc";
++		bootargs = "";
+ 		stdout-path = "serial0:115200n8";
+ 	};
+ 

toolchain/elf2flt/patches/453398f917d167f8c308c8f997270c48ae8f8b12/0005-arm.patch

@@ -0,0 +1,46 @@
+diff -Nur elf2flt-453398f917d167f8c308c8f997270c48ae8f8b12.orig/elf2flt.c elf2flt-453398f917d167f8c308c8f997270c48ae8f8b12/elf2flt.c
+--- elf2flt-453398f917d167f8c308c8f997270c48ae8f8b12.orig/elf2flt.c	2021-02-08 14:02:15.000000000 +0100
++++ elf2flt-453398f917d167f8c308c8f997270c48ae8f8b12/elf2flt.c	2021-04-09 20:40:19.386179197 +0200
+@@ -424,7 +424,8 @@
+ 	 */
+ 	if ((!pic_with_got || ALWAYS_RELOC_TEXT) &&
+ 	    ((a->flags & SEC_CODE) ||
+-	    ((a->flags & (SEC_DATA | SEC_READONLY)) == (SEC_DATA | SEC_READONLY))))
++	    ((a->flags & (SEC_DATA | SEC_READONLY | SEC_RELOC)) == 
++	                 (SEC_DATA | SEC_READONLY | SEC_RELOC))))
+ 		sectionp = text + (a->vma - text_vma);
+ 	else if (a->flags & SEC_DATA)
+ 		sectionp = data + (a->vma - data_vma);
+@@ -1861,7 +1862,9 @@
+     bfd_size_type sec_size;
+     bfd_vma sec_vma;
+ 
+-    if (s->flags & SEC_CODE) {
++    if ((s->flags & SEC_CODE) ||
++       ((s->flags & (SEC_DATA | SEC_READONLY | SEC_RELOC)) ==
++                    (SEC_DATA | SEC_READONLY | SEC_RELOC))) {
+       vma = &text_vma;
+       len = &text_len;
+     } else if (s->flags & SEC_DATA) {
+@@ -1896,7 +1899,9 @@
+ 
+   /* Read in all text sections.  */
+   for (s = abs_bfd->sections; s != NULL; s = s->next)
+-    if (s->flags & SEC_CODE) 
++    if ((s->flags & SEC_CODE) ||
++       ((s->flags & (SEC_DATA | SEC_READONLY | SEC_RELOC)) ==
++                    (SEC_DATA | SEC_READONLY | SEC_RELOC)))
+       if (!bfd_get_section_contents(abs_bfd, s,
+ 				   text + (s->vma - text_vma), 0,
+ 				   bfd_section_size(abs_bfd, s)))
+@@ -1922,7 +1927,9 @@
+ 
+   /* Read in all data sections.  */
+   for (s = abs_bfd->sections; s != NULL; s = s->next)
+-    if (s->flags & SEC_DATA) 
++      if ((s->flags & SEC_DATA) &&
++         ((s->flags & (SEC_READONLY | SEC_RELOC)) !=
++                    (SEC_READONLY | SEC_RELOC)))
+       if (!bfd_get_section_contents(abs_bfd, s,
+ 				   data + (s->vma - data_vma), 0,
+ 				   bfd_section_size(abs_bfd, s)))