debugfs: add SMC channel
Provide an SMC interface to the 9p filesystem. This permits
accessing firmware drivers through a common interface, using
standardized read/write/control operations.
Signed-off-by: Ambroise Vincent <ambroise.vincent@arm.com>
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
Change-Id: I9314662314bb060f6bc02714476574da158b2a7d
diff --git a/plat/arm/common/arm_bl31_setup.c b/plat/arm/common/arm_bl31_setup.c
index ab90f46..939885f 100644
--- a/plat/arm/common/arm_bl31_setup.c
+++ b/plat/arm/common/arm_bl31_setup.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2019, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -11,6 +11,7 @@
#include <common/bl_common.h>
#include <common/debug.h>
#include <drivers/console.h>
+#include <lib/debugfs.h>
#include <lib/extensions/ras.h>
#include <lib/mmio.h>
#include <lib/utils.h>
@@ -231,6 +232,10 @@
#if RAS_EXTENSION
ras_init();
#endif
+
+#if USE_DEBUGFS
+ debugfs_init();
+#endif /* USE_DEBUGFS */
}
/*******************************************************************************
diff --git a/plat/arm/common/arm_sip_svc.c b/plat/arm/common/arm_sip_svc.c
index 3d308a3..c8f480f 100644
--- a/plat/arm/common/arm_sip_svc.c
+++ b/plat/arm/common/arm_sip_svc.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2016-2019, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -8,6 +8,7 @@
#include <common/debug.h>
#include <common/runtime_svc.h>
+#include <lib/debugfs.h>
#include <lib/pmf/pmf.h>
#include <plat/arm/common/arm_sip_svc.h>
#include <plat/arm/common/plat_arm.h>
@@ -20,8 +21,18 @@
static int arm_sip_setup(void)
{
- if (pmf_setup() != 0)
+ if (pmf_setup() != 0) {
return 1;
+ }
+
+#if USE_DEBUGFS
+
+ if (debugfs_smc_setup() != 0) {
+ return 1;
+ }
+
+#endif /* USE_DEBUGFS */
+
return 0;
}
@@ -48,6 +59,15 @@
handle, flags);
}
+#if USE_DEBUGFS
+
+ if (is_debugfs_fid(smc_fid)) {
+ return debugfs_smc_handler(smc_fid, x1, x2, x3, x4, cookie,
+ handle, flags);
+ }
+
+#endif /* USE_DEBUGFS */
+
switch (smc_fid) {
case ARM_SIP_SVC_EXE_STATE_SWITCH: {
u_register_t pc;