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u-boot/arch/arm/lib
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Andre Przywara 30b315b48d arm: smh: specify Thumb trap instruction 
The ARM semihosting interface uses different trap instructions for
different architectures and instruction sets. So far we were using
AArch64 and ARMv7-M, and had an untested v7-A entry. The latter does
not work when building for Thumb, as can be verified by using
qemu_arm_defconfig, then enabling SEMIHOSTING and SYS_THUMB_BUILD:
==========
{standard input}:35: Error: invalid swi expression
{standard input}:35: Error: value of 1193046 too large for field of 2 bytes at 0
==========

Fix this by providing the recommended instruction[1] for Thumb, and
using the ARM instruction only when not building for Thumb. This also
removes some comment, as QEMU for ARM allows to now test this case.
Also use the opportunity to clean up the inline assembly, and just define
the actual trap instruction inside #ifdef's, to improve readability.

[1] https://developer.arm.com/documentation/dui0471/g/Semihosting/The-semihosting-interface?lang=en

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2022-11-02 13:31:40 -04:00
..
ashldi3.S SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
ashrdi3.S SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
asm-offsets.c arm: Remove zmx25 board and ARCH_MX25 2021-10-01 21:08:18 -04:00
asmdefs.h arm64: arch/arm/lib: Add optimized memset/memcpy/memmove functions 2021-09-24 07:48:06 -04:00
bdinfo.c common/board_f: move CONFIG_MACH_TYPE logic to arch/arm/lib/bdinfo.c 2022-10-06 21:05:17 -04:00
bootm-fdt.c common: Drop asm/global_data.h from common header 2021-02-02 15:33:42 -05:00
bootm.c treewide: Drop bootm_headers_t typedef 2022-09-29 16:07:57 -04:00
cache-cp15.c arch: cache: cp15: Add mmu_set_region_dcache_behaviour() when SYS_DCACHE_OFF is enable 2021-07-09 11:36:12 -04:00
cache-pl310.c ARM: cache: Fix incorrect bitwise operation 2019-02-28 14:21:46 -05:00
cache.c common: Drop asm/global_data.h from common header 2021-02-02 15:33:42 -05:00
ccn504.S WS cleanup: remove SPACE(s) followed by TAB 2021-09-30 09:08:16 -04:00
cmd_boot.c command: Remove the cmd_tbl_t typedef 2020-05-18 18:36:55 -04:00
crt0.S Rename CONFIG_SYS_TEXT_BASE to CONFIG_TEXT_BASE 2022-10-31 11:01:31 -04:00
crt0_64.S Migrate CUSTOM_SYS_INIT_SP_ADDR to Kconfig using system-constants.h 2022-06-06 12:09:19 -04:00
crt0_aarch64_efi.S efi_loader: fix SectionAlignment, FileAlignment 2022-01-15 10:57:22 +01:00
crt0_arm_efi.S efi_loader: fix SectionAlignment, FileAlignment 2022-01-15 10:57:22 +01:00
debug.S SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
div0.c common: Move hang() to the same header as panic() 2020-01-17 17:53:40 -05:00
div64.S WS cleanup: remove SPACE(s) followed by TAB 2021-09-30 09:08:16 -04:00
eabi_compat.c SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
elf_aarch64_efi.lds efi_loader: fix SectionAlignment, FileAlignment 2022-01-15 10:57:22 +01:00
elf_arm_efi.lds efi_loader: fix SectionAlignment, FileAlignment 2022-01-15 10:57:22 +01:00
gic-v3-its.c Revert "arch: arm: use dt and UCLASS_SYSCON to get gic lpi details" 2021-10-31 08:46:29 -04:00
gic_64.S arm: gic_v2: Skip gic_init_secure when cpu is not in el3 2022-05-23 09:33:10 -04:00
image.c common: Drop asm/global_data.h from common header 2021-02-02 15:33:42 -05:00
interrupts.c reset: Remove addr parameter from reset_cpu() 2021-03-02 14:03:02 -05:00
interrupts_64.c arm64: Catch non-emulated semihosting calls 2022-04-01 16:56:53 -04:00
interrupts_m.c reset: Remove addr parameter from reset_cpu() 2021-03-02 14:03:02 -05:00
lib1funcs.S arm: ARMv4 assembly compatibility 2022-09-02 13:40:42 -04:00
lshrdi3.S SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
Makefile Add in the ability to load and boot an uncompressed kernel image during the Falcon Mode boot sequence. 2022-09-14 15:23:03 -04:00
memcpy-arm64.S arm64: arch/arm/lib: Add optimized memset/memcpy/memmove functions 2021-09-24 07:48:06 -04:00
memcpy.S arm: ARMv4 assembly compatibility 2022-09-02 13:40:42 -04:00
memset-arm64.S arm64: memset-arm64: Use simple memset when cache is disabled 2021-09-24 07:48:06 -04:00
memset.S SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
muldi3.S SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
psci-dt.c treewide: use CONFIG_IS_ENABLED() for ARMV8_SEC_FIRMWARE_SUPPORT 2020-12-04 16:09:05 -05:00
reloc_aarch64_efi.c arm: Remove unused _relocate arguments 2018-07-19 16:31:36 -04:00
reloc_arm_efi.c arm: Remove unused _relocate arguments 2018-07-19 16:31:36 -04:00
relocate.S arm: ARMv4 assembly compatibility 2022-09-02 13:40:42 -04:00
relocate_64.S Rename CONFIG_SYS_TEXT_BASE to CONFIG_TEXT_BASE 2022-10-31 11:01:31 -04:00
reset.c reset: Remove addr parameter from reset_cpu() 2021-03-02 14:03:02 -05:00
save_prev_bl_data.c arm: init: save previous bootloader data 2022-04-04 14:53:26 -04:00
sections.c treewide: Convert macro and uses of __section(foo) to __section("foo") 2021-05-24 14:21:30 -04:00
semihosting.c arm: smh: specify Thumb trap instruction 2022-11-02 13:31:40 -04:00
setjmp.S arm: ARMv4 assembly compatibility 2022-09-02 13:40:42 -04:00
setjmp_aarch64.S SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
spl.c spl: Make use of CONFIG_IS_ENABLED(OS_BOOT) in SPL/TPL common code paths 2021-11-05 11:23:29 -04:00
stack.c lmb: arm: Increase LMB alignment to 16k in arch_lmb_reserve_generic() 2021-09-23 14:15:32 -04:00
uldivmod.S SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
vectors.S arm: Do not compile vector table when SYS_NO_VECTOR_TABLE is enabled 2022-04-21 12:31:36 +02:00
vectors_m.S Migrate CUSTOM_SYS_INIT_SP_ADDR to Kconfig using system-constants.h 2022-06-06 12:09:19 -04:00
zimage.c arm: zimage: Use correct symbol to hide messages in SPL 2021-04-27 08:05:30 -04:00