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semihosting armv7a: Add support for ARMv7-A

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Add semihosting support for ARMv7-A based processors.

Tested with custom Vybrid VF610 based board
and Pandaboard ES (Rev. B1) board (Cortex-A9).

Change-Id: I6b896a61c1c6a1c5dcf89de834486f82dd6c80a2
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Tsung-Han Lin <tsunghan.tw@gmail.com>
Reviewed-on: http://openocd.zylin.com/2908
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Tested-by: jenkins
This commit is contained in:
Andrey Smirnov
2015-08-08 15:18:16 -07:00
committed by Freddie Chopin
parent b10037a0b7
commit d1bdcdcc8d
4 changed files with 89 additions and 4 deletions
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29
src/target/armv7a.c
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@@ -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;