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![]() If you enable CONFIG_SEMIHOSTING for STM32F429 target, you will get compile error looking like this: arch/arm/lib/semihosting.c: In function 'smh_read': {standard input}: Assembler messages: {standard input}:34: Error: invalid swi expression {standard input}:34: Error: value of 1193046 too large for field of 2 bytes at 0 scripts/Makefile.build:277: recipe for target 'arch/arm/lib/semihosting.o' failed The source of the problem is "svc #0x123456" instruction. This instruction can not be encoded using Thumb2 instruction set used by ARMv7M CPUs. ARM documentation suggests using "bkpt #0xAB" instruction instead [1]. This patch fixes compile errors and adds support for semihosting for STM32F429 or any other ARMv7M target. This change was sested on STM32F429-DISCOVERY board using OpenOCD and "smhload" u-boot command. [1] http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0471c/Bgbjhiea.html Signed-off-by: Vadzim Dambrouski <pftbest@gmail.com> |
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.. | ||
cpu | ||
dts | ||
imx-common | ||
include | ||
lib | ||
mach-at91 | ||
mach-bcm283x | ||
mach-davinci | ||
mach-exynos | ||
mach-highbank | ||
mach-integrator | ||
mach-keystone | ||
mach-kirkwood | ||
mach-mvebu | ||
mach-orion5x | ||
mach-rockchip | ||
mach-socfpga | ||
mach-tegra | ||
mach-uniphier | ||
mach-versatile | ||
mach-zynq | ||
mvebu-common | ||
config.mk | ||
Kconfig | ||
Kconfig.debug | ||
Makefile |