[PATCH] Kconfig: Set STACK_SIZE to 16KB for STM32 MCUs

[Patrice Chotard]

Since commit 6534d26ee9a5 ("lmb: do away with arch_lmb_reserve()"),
STM32F746-disco hangs when loading device tree just before starting
kernel:

Retrieving file: /stm32f746-disco.dtb
Kernel image @ 0xc0008000 [ 0x000000 - 0x19ae00 ]
Flattened Device Tree blob at c0408000
   Booting using the fdt blob at 0xc0408000
Working FDT set to c0408000
   Loading Device Tree to c05f8000, end c05ff71c ...

Adjust STACK_SIZE to 16KB for STM32 MCUs (F4/F7 and H7) boards
to fix kernel boot process as some of these boards embeds a limited
amount of memory.

Fixes: 6534d26ee9a5 ("lmb: do away with arch_lmb_reserve()")

Signed-off-by: Patrice Chotard <patrice.chotard at foss.st.com>
---

 Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Kconfig b/Kconfig
index 1f5b0f1972d..c087a420a24 100644
--- a/Kconfig
+++ b/Kconfig
@@ -578,6 +578,7 @@ config STACK_SIZE
 	hex "Define max stack size that can be used by U-Boot"
 	default 0x4000000 if ARCH_VERSAL_NET || ARCH_VERSAL || ARCH_ZYNQMP
 	default 0x200000 if MICROBLAZE
+	default 0x4000 if ARCH_STM32
 	default 0x1000000
 	help
 	  Define Max stack size that can be used by U-Boot. This value is used
-- 
2.25.1