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authorMatthias Welwarsky <matthias.welwarsky@sysgo.com>2016-09-20 11:16:30 +0200
committerMatthias Welwarsky <matthias.welwarsky@sysgo.com>2017-02-10 14:01:39 +0100
commite17d1d4dc870155010422095272d8a6c16435451 (patch)
treed9ab16bf174b07930f58c9f7f58a76b68413a19a
parentb430d0a1520903213e0796e9fcbc5ab180f1fbe8 (diff)
aarch64: add cache handling functions
For now only D-Cache flush (Clean&Invalidate) and I-Cache invalidate are implemented. That's enough for software breakpoints. Change-Id: I8e96d645a230b51e3490403f4564e59ba6a76cf3 Signed-off-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
-rw-r--r--src/target/Makefile.am4
-rw-r--r--src/target/armv8_cache.c122
-rw-r--r--src/target/armv8_cache.h26
-rw-r--r--src/target/armv8_opcodes.h2
4 files changed, 153 insertions, 1 deletions
diff --git a/src/target/Makefile.am b/src/target/Makefile.am
index c20ac0f..0021f44 100644
--- a/src/target/Makefile.am
+++ b/src/target/Makefile.am
@@ -76,7 +76,8 @@ ARMV7_SRC = \
ARMV8_SRC = \
%D%/armv8_dpm.c \
%D%/aarch64.c \
- %D%/armv8.c
+ %D%/armv8.c \
+ %D%/armv8_cache.c
ARM_DEBUG_SRC = \
%D%/arm_dpm.c \
@@ -158,6 +159,7 @@ INTEL_IA32_SRC = \
%D%/armv8.h \
%D%/armv8_dpm.h \
%D%/armv8_opcodes.h \
+ %D%/armv8_cache.h \
%D%/avrt.h \
%D%/dsp563xx.h \
%D%/dsp563xx_once.h \
diff --git a/src/target/armv8_cache.c b/src/target/armv8_cache.c
new file mode 100644
index 0000000..fb18804
--- /dev/null
+++ b/src/target/armv8_cache.c
@@ -0,0 +1,122 @@
+/***************************************************************************
+ * Copyright (C) 2016 by Matthias Welwarsky *
+ * matthias.welwarsky@sysgo.com *
+ * *
+ * 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, see <http://www.gnu.org/licenses/>. *
+ ***************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "armv8_cache.h"
+#include "armv8_dpm.h"
+#include "armv8_opcodes.h"
+
+static int armv8_d_cache_sanity_check(struct armv8_common *armv8)
+{
+ struct armv8_cache_common *armv8_cache = &armv8->armv8_mmu.armv8_cache;
+
+ if (armv8_cache->d_u_cache_enabled)
+ return ERROR_OK;
+
+ return ERROR_TARGET_INVALID;
+}
+
+static int armv8_i_cache_sanity_check(struct armv8_common *armv8)
+{
+ struct armv8_cache_common *armv8_cache = &armv8->armv8_mmu.armv8_cache;
+
+ if (armv8_cache->i_cache_enabled)
+ return ERROR_OK;
+
+ return ERROR_TARGET_INVALID;
+}
+
+int armv8_cache_d_inner_flush_virt(struct armv8_common *armv8, target_addr_t va, size_t size)
+{
+ struct arm_dpm *dpm = armv8->arm.dpm;
+ struct armv8_cache_common *armv8_cache = &armv8->armv8_mmu.armv8_cache;
+ uint64_t linelen = armv8_cache->d_u_size.linelen;
+ target_addr_t va_line, va_end;
+ int retval;
+
+ retval = armv8_d_cache_sanity_check(armv8);
+ if (retval != ERROR_OK)
+ return retval;
+
+ retval = dpm->prepare(dpm);
+ if (retval != ERROR_OK)
+ goto done;
+
+ va_line = va & (-linelen);
+ va_end = va + size;
+
+ while (va_line < va_end) {
+ /* DC CIVAC */
+ /* Aarch32: DCCIMVAC: ARMV4_5_MCR(15, 0, 0, 7, 14, 1) */
+ retval = dpm->instr_write_data_r0_64(dpm,
+ ARMV8_SYS(SYSTEM_DCCIVAC, 0), va_line);
+ if (retval != ERROR_OK)
+ goto done;
+ va_line += linelen;
+ }
+
+ dpm->finish(dpm);
+ return retval;
+
+done:
+ LOG_ERROR("d-cache invalidate failed");
+ dpm->finish(dpm);
+
+ return retval;
+}
+
+int armv8_cache_i_inner_inval_virt(struct armv8_common *armv8, target_addr_t va, size_t size)
+{
+ struct arm_dpm *dpm = armv8->arm.dpm;
+ struct armv8_cache_common *armv8_cache = &armv8->armv8_mmu.armv8_cache;
+ uint64_t linelen = armv8_cache->i_size.linelen;
+ target_addr_t va_line, va_end;
+ int retval;
+
+ retval = armv8_i_cache_sanity_check(armv8);
+ if (retval != ERROR_OK)
+ return retval;
+
+ retval = dpm->prepare(dpm);
+ if (retval != ERROR_OK)
+ goto done;
+
+ va_line = va & (-linelen);
+ va_end = va + size;
+
+ while (va_line < va_end) {
+ /* IC IVAU - Invalidate instruction cache by VA to PoU. */
+ retval = dpm->instr_write_data_r0_64(dpm,
+ ARMV8_SYS(SYSTEM_ICIVAU, 0), va_line);
+ if (retval != ERROR_OK)
+ goto done;
+ va_line += linelen;
+ }
+
+ dpm->finish(dpm);
+ return retval;
+
+done:
+ LOG_ERROR("d-cache invalidate failed");
+ dpm->finish(dpm);
+
+ return retval;
+}
diff --git a/src/target/armv8_cache.h b/src/target/armv8_cache.h
new file mode 100644
index 0000000..fa46e16
--- /dev/null
+++ b/src/target/armv8_cache.h
@@ -0,0 +1,26 @@
+/***************************************************************************
+ * Copyright (C) 2016 by Matthias Welwarsky *
+ * matthias.welwarsky@sysgo.com *
+ * *
+ * 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, see <http://www.gnu.org/licenses/>. *
+ ***************************************************************************/
+#ifndef OPENOCD_TARGET_ARMV8_CACHE_H_
+#define OPENOCD_TARGET_ARMV8_CACHE_H_
+
+#include "armv8.h"
+
+extern int armv8_cache_d_inner_flush_virt(struct armv8_common *armv8, target_addr_t va, size_t size);
+extern int armv8_cache_i_inner_inval_virt(struct armv8_common *armv8, target_addr_t va, size_t size);
+
+#endif /* OPENOCD_TARGET_ARMV8_CACHE_H_ */
diff --git a/src/target/armv8_opcodes.h b/src/target/armv8_opcodes.h
index a1fb5d4..89d7440 100644
--- a/src/target/armv8_opcodes.h
+++ b/src/target/armv8_opcodes.h
@@ -82,6 +82,7 @@
#define SYSTEM_DCCSW 0b0100001111010010
#define SYSTEM_ICIVAU 0b0101101110101001
#define SYSTEM_DCCVAU 0b0101101111011001
+#define SYSTEM_DCCIVAC 0b0101101111110001
#define SYSTEM_MPIDR 0b1100000000000101
@@ -125,5 +126,6 @@
#define ARMV8_MOVFSP_32(Rt) (0x11000000 | (0x1f << 5) | (Rt))
#define ARMV8_MOVTSP_32(Rt) (0x11000000 | (Rt << 5) | (0x1F))
+#define ARMV8_SYS(System, Rt) (0xD5080000 | ((System) << 5) | Rt)
#endif /* __ARM_OPCODES_H */