diff options
Diffstat (limited to 'src/target/armv7a.c')
| -rw-r--r-- | src/target/armv7a.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/target/armv7a.c b/src/target/armv7a.c index 37eb1b5..6021def 100644 --- a/src/target/armv7a.c +++ b/src/target/armv7a.c @@ -679,11 +679,40 @@ done: } +static int armv7a_setup_semihosting(struct target *target, int enable) +{ + struct armv7a_common *armv7a = target_to_armv7a(target); + uint32_t vcr; + int ret; + + ret = mem_ap_read_atomic_u32(armv7a->debug_ap, + armv7a->debug_base + CPUDBG_VCR, + &vcr); + if (ret < 0) { + LOG_ERROR("Failed to read VCR register\n"); + return ret; + } + + if (enable) + vcr |= DBG_VCR_SVC_MASK; + else + vcr &= ~DBG_VCR_SVC_MASK; + + ret = mem_ap_write_atomic_u32(armv7a->debug_ap, + armv7a->debug_base + CPUDBG_VCR, + vcr); + if (ret < 0) + LOG_ERROR("Failed to write VCR register\n"); + + return ret; +} + int armv7a_init_arch_info(struct target *target, struct armv7a_common *armv7a) { struct arm *arm = &armv7a->arm; arm->arch_info = armv7a; target->arch_info = &armv7a->arm; + arm->setup_semihosting = armv7a_setup_semihosting; /* target is useful in all function arm v4 5 compatible */ armv7a->arm.target = target; armv7a->arm.common_magic = ARM_COMMON_MAGIC; |