Kconfig: Set STACK_SIZE to 16KB for STM32 MCUs

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@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>

diff --git a/Kconfig b/Kconfig
index 1f5b0f1972d814469d7526f3c30f3495c652d270..c087a420a247862afa11cd7eaa2ec471cbdafdf6 100644 (file)
--- 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