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authorMatthias Welwarsky <matthias.welwarsky@sysgo.com>2016-11-19 10:02:34 +0100
committerPaul Fertser <fercerpav@gmail.com>2017-02-24 09:13:52 +0000
commit9527d1e595e316a4155c808fafa3a0ea6baa72f2 (patch)
treedd8d7771c552380f1b26559f729613a780a226ce
parent7ed0b6333ded06f1e517d7fd3e15a400c98dc357 (diff)
target: generic ARM CTI function wrapper
Not specific to ARMv8, the Cross Trigger Interface deserves an independent access wrapper. Change-Id: I84f8faad15ed3515e0fff7f6cc5d1109ef91a869 Signed-off-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com> Reviewed-on: http://openocd.zylin.com/3986 Tested-by: jenkins Reviewed-by: Paul Fertser <fercerpav@gmail.com>
-rw-r--r--src/target/Makefile.am6
-rw-r--r--src/target/arm_cti.c148
-rw-r--r--src/target/arm_cti.h73
3 files changed, 225 insertions, 2 deletions
diff --git a/src/target/Makefile.am b/src/target/Makefile.am
index e936d3f..597070c 100644
--- a/src/target/Makefile.am
+++ b/src/target/Makefile.am
@@ -96,7 +96,8 @@ ARM_DEBUG_SRC = \
%D%/etb.c \
%D%/etm.c \
$(OOCD_TRACE_FILES) \
- %D%/etm_dummy.c
+ %D%/etm_dummy.c \
+ %D%/arm_cti.c
AVR32_SRC = \
%D%/avr32_ap7k.c \
@@ -205,6 +206,7 @@ INTEL_IA32_SRC = \
%D%/nds32_v3m.h \
%D%/nds32_aice.h \
%D%/lakemont.h \
- %D%/x86_32_common.h
+ %D%/x86_32_common.h \
+ %D%/arm_cti.h
include %D%/openrisc/Makefile.am
diff --git a/src/target/arm_cti.c b/src/target/arm_cti.c
new file mode 100644
index 0000000..75169b2
--- /dev/null
+++ b/src/target/arm_cti.c
@@ -0,0 +1,148 @@
+/***************************************************************************
+ * Copyright (C) 2016 by Matthias Welwarsky *
+ * *
+ * This program is free software; you can redistribute it and/or modify *
+ * it under the terms of the GNU General Public License as published by *
+ * the Free Software Foundation; either version 2 of the License, or *
+ * (at your option) any later version. *
+ * *
+ * This program is distributed in the hope that it will be useful, *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
+ * GNU General Public License for more details. *
+ * *
+ * You should have received a copy of the GNU General Public License *
+ * along with this program; if not, write to the *
+ * Free Software Foundation, Inc., *
+ * *
+ ***************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdlib.h>
+#include <stdint.h>
+#include "target/arm_adi_v5.h"
+#include "target/arm_cti.h"
+#include "target/target.h"
+#include "helper/time_support.h"
+
+struct arm_cti {
+ uint32_t base;
+ struct adiv5_ap *ap;
+};
+
+struct arm_cti *arm_cti_create(struct adiv5_ap *ap, uint32_t base)
+{
+ struct arm_cti *self = calloc(1, sizeof(struct arm_cti));
+ if (!self)
+ return NULL;
+
+ self->base = base;
+ self->ap = ap;
+ return self;
+}
+
+static int arm_cti_mod_reg_bits(struct arm_cti *self, unsigned int reg, uint32_t mask, uint32_t value)
+{
+ uint32_t tmp;
+
+ /* Read register */
+ int retval = mem_ap_read_atomic_u32(self->ap, self->base + reg, &tmp);
+ if (ERROR_OK != retval)
+ return retval;
+
+ /* clear bitfield */
+ tmp &= ~mask;
+ /* put new value */
+ tmp |= value & mask;
+
+ /* write new value */
+ return mem_ap_write_atomic_u32(self->ap, self->base + reg, tmp);
+}
+
+int arm_cti_enable(struct arm_cti *self, bool enable)
+{
+ uint32_t val = enable ? 1 : 0;
+
+ return mem_ap_write_atomic_u32(self->ap, self->base + CTI_CTR, val);
+}
+
+int arm_cti_ack_events(struct arm_cti *self, uint32_t event)
+{
+ int retval;
+ uint32_t tmp;
+
+ retval = mem_ap_write_atomic_u32(self->ap, self->base + CTI_INACK, event);
+ if (retval == ERROR_OK) {
+ int64_t then = timeval_ms();
+ for (;;) {
+ retval = mem_ap_read_atomic_u32(self->ap, self->base + CTI_TROUT_STATUS, &tmp);
+ if (retval != ERROR_OK)
+ break;
+ if ((tmp & event) == 0)
+ break;
+ if (timeval_ms() > then + 1000) {
+ LOG_ERROR("timeout waiting for target");
+ retval = ERROR_TARGET_TIMEOUT;
+ break;
+ }
+ }
+ }
+
+ return retval;
+}
+
+int arm_cti_gate_channel(struct arm_cti *self, uint32_t channel)
+{
+ if (channel > 31)
+ return ERROR_COMMAND_ARGUMENT_INVALID;
+
+ return arm_cti_mod_reg_bits(self, CTI_GATE, CTI_CHNL(channel), 0);
+}
+
+int arm_cti_ungate_channel(struct arm_cti *self, uint32_t channel)
+{
+ if (channel > 31)
+ return ERROR_COMMAND_ARGUMENT_INVALID;
+
+ return arm_cti_mod_reg_bits(self, CTI_GATE, CTI_CHNL(channel), 0xFFFFFFFF);
+}
+
+int arm_cti_write_reg(struct arm_cti *self, unsigned int reg, uint32_t value)
+{
+ return mem_ap_write_atomic_u32(self->ap, self->base + reg, value);
+}
+
+int arm_cti_read_reg(struct arm_cti *self, unsigned int reg, uint32_t *p_value)
+{
+ if (p_value == NULL)
+ return ERROR_COMMAND_ARGUMENT_INVALID;
+
+ return mem_ap_read_atomic_u32(self->ap, self->base + reg, p_value);
+}
+
+int arm_cti_pulse_channel(struct arm_cti *self, uint32_t channel)
+{
+ if (channel > 31)
+ return ERROR_COMMAND_ARGUMENT_INVALID;
+
+ return arm_cti_write_reg(self, CTI_APPPULSE, CTI_CHNL(channel));
+}
+
+int arm_cti_set_channel(struct arm_cti *self, uint32_t channel)
+{
+ if (channel > 31)
+ return ERROR_COMMAND_ARGUMENT_INVALID;
+
+ return arm_cti_write_reg(self, CTI_APPSET, CTI_CHNL(channel));
+}
+
+int arm_cti_clear_channel(struct arm_cti *self, uint32_t channel)
+{
+ if (channel > 31)
+ return ERROR_COMMAND_ARGUMENT_INVALID;
+
+ return arm_cti_write_reg(self, CTI_APPCLEAR, CTI_CHNL(channel));
+}
diff --git a/src/target/arm_cti.h b/src/target/arm_cti.h
new file mode 100644
index 0000000..99724c4
--- /dev/null
+++ b/src/target/arm_cti.h
@@ -0,0 +1,73 @@
+/***************************************************************************
+ * Copyright (C) 2016 by Matthias Welwarsky *
+ * *
+ * This program is free software; you can redistribute it and/or modify *
+ * it under the terms of the GNU General Public License as published by *
+ * the Free Software Foundation; either version 2 of the License, or *
+ * (at your option) any later version. *
+ * *
+ * This program is distributed in the hope that it will be useful, *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
+ * GNU General Public License for more details. *
+ * *
+ * You should have received a copy of the GNU General Public License *
+ * along with this program; if not, write to the *
+ * Free Software Foundation, Inc., *
+ * *
+ ***************************************************************************/
+
+#ifndef OPENOCD_TARGET_ARM_CTI_H
+#define OPENOCD_TARGET_ARM_CTI_H
+
+/*define CTI(cross trigger interface)*/
+#define CTI_CTR 0x0
+#define CTI_INACK 0x10
+#define CTI_APPSET 0x14
+#define CTI_APPCLEAR 0x18
+#define CTI_APPPULSE 0x1C
+#define CTI_INEN0 0x20
+#define CTI_INEN1 0x24
+#define CTI_INEN2 0x28
+#define CTI_INEN3 0x2C
+#define CTI_INEN4 0x30
+#define CTI_INEN5 0x34
+#define CTI_INEN6 0x38
+#define CTI_INEN7 0x3C
+#define CTI_INEN(n) (0x20 + 4 * n)
+#define CTI_OUTEN0 0xA0
+#define CTI_OUTEN1 0xA4
+#define CTI_OUTEN2 0xA8
+#define CTI_OUTEN3 0xAC
+#define CTI_OUTEN4 0xB0
+#define CTI_OUTEN5 0xB4
+#define CTI_OUTEN6 0xB8
+#define CTI_OUTEN7 0xBC
+#define CTI_OUTEN(n) (0xA0 + 4 * n)
+#define CTI_TRIN_STATUS 0x130
+#define CTI_TROUT_STATUS 0x134
+#define CTI_CHIN_STATUS 0x138
+#define CTI_CHOU_STATUS 0x13C
+#define CTI_GATE 0x140
+#define CTI_UNLOCK 0xFB0
+
+#define CTI_CHNL(x) (1 << x)
+#define CTI_TRIG_HALT 0
+#define CTI_TRIG_RESUME 1
+#define CTI_TRIG(n) (1 << CTI_TRIG_##n)
+
+/* forward-declare arm_cti struct */
+struct arm_cti;
+
+extern struct arm_cti *arm_cti_create(struct adiv5_ap *ap, uint32_t base);
+extern int arm_cti_enable(struct arm_cti *self, bool enable);
+extern int arm_cti_ack_events(struct arm_cti *self, uint32_t event);
+extern int arm_cti_gate_channel(struct arm_cti *self, uint32_t channel);
+extern int arm_cti_ungate_channel(struct arm_cti *self, uint32_t channel);
+extern int arm_cti_write_reg(struct arm_cti *self, unsigned int reg, uint32_t value);
+extern int arm_cti_read_reg(struct arm_cti *self, unsigned int reg, uint32_t *value);
+extern int arm_cti_pulse_channel(struct arm_cti *self, uint32_t channel);
+extern int arm_cti_set_channel(struct arm_cti *self, uint32_t channel);
+extern int arm_cti_clear_channel(struct arm_cti *self, uint32_t channel);
+
+#endif /* OPENOCD_TARGET_ARM_CTI_H */