After booting Linux the userspace is unusable since every command issued,
that is a symlink to busybox, fails because of no free ram. So let's
disable IIO in linux.config to give some more ram to userspace.
Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
The kernel generated by the configuration for the STM32f429-discovery
board is buggy:
Fixes:
Unhandled exception: IPSR = 00000006 LR = fffffff1
CPU: 0 PID: 1 Comm: init Not tainted 4.11.0 #2
Hardware name: STM32 (Device Tree Support)
task: 9041a000 task.stack: 907c0000
PC is at ret_fast_syscall+0x2/0x4a
LR is at tty_ioctl+0x1ad/0x75c
pc : [<0800d942>] lr : [<080c2e05>] psr: 4000000b
sp : 907c1fa8 ip : 0000001c fp : 905961a2
r10: 00000000 r9 : 907c0000 r8 : 0800dae0
r7 : 00000036 r6 : 905e7e60 r5 : 00000000 r4 : 905e7ebc
r3 : 00000000 r2 : 00000000 r1 : 00000000 r0 : 00000000
xPSR: 4000000b
CPU: 0 PID: 1 Comm: init Not tainted 4.11.0 #2
Hardware name: STM32 (Device Tree Support)
[<0800fbf9>] (unwind_backtrace) from [<0800f05b>] (show_stack+0xb/0xc)
[<0800f05b>] (show_stack) from [<0800f553>] (__invalid_entry+0x4b/0x4c)
Inspired by commit a3e3d9c198 ("configs/stm32f469_disco_xip_defconfig:
alternative defconfig for XIP"), update the stm32f429_disco_defconfig
configuration to use a newer kernel. Current setup kernel + rootfs fits
in 1.6MB on-chip flash memory.
The kernel has been moved to new flash bank due to growth of dtb size.
Remove upstream patch.
For better binary size optimization gcc LTO is turned on.
Signed-off-by: Dario Binacchi <dariobin@libero.it>
Acked-by: Christophe Priouzeau <christophe.priouzeau@foss.st.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Manual change because the script uses ${OUTPUT_DIR}/host instead of
${HOST_DIR}.
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This change renders the stm32f429discovery a bit more generic and reuse most
of its settings for the stm32f429-disc1 board.
Cc: Waldemar Brodkorb <wbx@openadk.org>
Cc: Davide Viti <zinosat@tiscali.it>
Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit adds a defconfig for the STM32F429 platform, which is
based on a Cortex-M4 core from ST Microelectronics. It is therefore
the first noMMU ARM platform supported in Buildroot.
This commit includes some files that will be common to several STM32
platforms (hence in board/stmicroelectronics) and some files that are
specific to the STM32F429 (hence in
board/stmicroelectronics/stm32f429-disco). More specifically, this
commit adds:
- A minimal Busybox configuration, which is small enough to boot
without causing OOM on such small noMMU platforms. The resulting
Busybox, statically linked with uClibc-ng, weights around 220
KB. For now, this file is located in board/stmicroelectronics/, but
we might consider moving it to package/busybox/ in the future if
needed.
- A post-build script that removes the mounting of /dev/pts (not
enabled in the kernel and not very useful for a system that has no
network and no X), and removes the network related init script and
configuration files (no network support).
- A flash.sh script, to perform the right OpenOCD invocations to
reflash the board.
- One small kernel patch to adjust the kernel command line in the
Device Tree, since it's the only way to do so.
- The usual readme.txt file.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
[Thomas:
- squashed multiple patches from Lee Jones together
- added the minimal Busybox configuration
- added the post-build script
- improved the flashing script to not hardcode the location of the
output directory
- add the small kernel patch
- improve the readme.txt file
- test on HW the resulting image, after using the internal toolchain.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
