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Posted to commits@nuttx.apache.org by bt...@apache.org on 2020/12/31 20:23:29 UTC
[incubator-nuttx] branch bl602-rst created (now 01473c1)
This is an automated email from the ASF dual-hosted git repository.
btashton pushed a change to branch bl602-rst
in repository https://gitbox.apache.org/repos/asf/incubator-nuttx.git.
at 01473c1 BL602: Add support for system reboot modes
This branch includes the following new commits:
new 01473c1 BL602: Add support for system reboot modes
The 1 revisions listed above as "new" are entirely new to this
repository and will be described in separate emails. The revisions
listed as "add" were already present in the repository and have only
been added to this reference.
[incubator-nuttx] 01/01: BL602: Add support for system reboot modes
Posted by bt...@apache.org.
This is an automated email from the ASF dual-hosted git repository.
btashton pushed a commit to branch bl602-rst
in repository https://gitbox.apache.org/repos/asf/incubator-nuttx.git
commit 01473c1e69ae4601c8a677ab5500db4f4e0fa77d
Author: Brennan Ashton <ba...@brennanashton.com>
AuthorDate: Thu Dec 31 12:22:53 2020 -0800
BL602: Add support for system reboot modes
Signed-off-by: Brennan Ashton <ba...@brennanashton.com>
---
arch/risc-v/Kconfig | 1 +
arch/risc-v/src/bl602/Make.defs | 2 +-
arch/risc-v/src/bl602/bl602_systemreset.c | 128 +++++++++++++++++++++++++
arch/risc-v/src/bl602/bl602_systemreset.h | 84 ++++++++++++++++
boards/risc-v/bl602/bl602evb/src/Makefile | 3 +
boards/risc-v/bl602/bl602evb/src/bl602_reset.c | 59 ++++++++++++
6 files changed, 276 insertions(+), 1 deletion(-)
diff --git a/arch/risc-v/Kconfig b/arch/risc-v/Kconfig
index 87e63f8..290fd35 100644
--- a/arch/risc-v/Kconfig
+++ b/arch/risc-v/Kconfig
@@ -47,6 +47,7 @@ config ARCH_CHIP_GAP8
config ARCH_CHIP_BL602
bool "BouffaloLab BL602"
select ARCH_RV32IM
+ select ARCH_HAVE_RESET
---help---
BouffaloLab BL602(rv32imfc)
diff --git a/arch/risc-v/src/bl602/Make.defs b/arch/risc-v/src/bl602/Make.defs
index 1d1b231..d1a363b 100644
--- a/arch/risc-v/src/bl602/Make.defs
+++ b/arch/risc-v/src/bl602/Make.defs
@@ -59,7 +59,7 @@ ifeq ($(CONFIG_ONESHOT),y)
CHIP_CSRCS += bl602_oneshot_lowerhalf.c
endif
-CHIP_CSRCS += bl602_glb.c bl602_gpio.c bl602_hbn.c
+CHIP_CSRCS += bl602_glb.c bl602_gpio.c bl602_hbn.c bl602_systemreset.c
# INCLUDES += ${shell $(INCDIR) "$(CC)" $(ARCH_SRCDIR)$(DELIM)chip$(DELIM)hardware}
diff --git a/arch/risc-v/src/bl602/bl602_systemreset.c b/arch/risc-v/src/bl602/bl602_systemreset.c
new file mode 100644
index 0000000..f764247
--- /dev/null
+++ b/arch/risc-v/src/bl602/bl602_systemreset.c
@@ -0,0 +1,128 @@
+/****************************************************************************
+ * arch/risc-v/src/bl602/bl602_systemreset.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership. The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include "riscv_arch.h"
+
+#include "hardware/bl602_glb.h"
+#include "hardware/bl602_hbn.h"
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: bl602_chip_reset
+ *
+ * Description:
+ * Control the different reset modes
+ *
+ * Input Parameters:
+ * mask - Reset bitmask use these defines
+ * SWRST_CFG2_CTRL_SYS_RESET, SWRST_CFG2_CTRL_CPU_RESET,
+ * SWRST_CFG2_CTRL_PWRON_RST
+ *
+ ****************************************************************************/
+
+static void bl602_chip_reset(uint32_t mask)
+{
+ /* Reset the root clock */
+
+ modifyreg32(BL602_HBN_GLB, HBN_GLB_HBN_ROOT_CLK_SEL_MASK, 0);
+
+ /* Clear root clock dividers */
+
+ modifyreg32(
+ BL602_CLK_CFG0,
+ CLK_CFG0_REG_BCLK_DIV_MASK | CLK_CFG0_REG_HCLK_DIV_MASK,
+ 0
+ );
+
+ /* This register should be cleared on changes to root clock.
+ * details of this register are not documented, but is clear from ROM
+ */
+
+ putreg32(0, 0x40000ffc);
+
+ /* Trigger reset */
+
+ modifyreg32(
+ BL602_SWRST_CFG2,
+ (SWRST_CFG2_CTRL_SYS_RESET | SWRST_CFG2_CTRL_CPU_RESET | \
+ SWRST_CFG2_CTRL_PWRON_RST),
+ mask
+ );
+
+ /* Wait for the reset */
+
+ for (; ; );
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: up_systemreset
+ *
+ * Description:
+ * Internal reset logic.
+ *
+ ****************************************************************************/
+
+void up_systemreset(void)
+{
+ bl602_chip_reset(SWRST_CFG2_CTRL_SYS_RESET | SWRST_CFG2_CTRL_CPU_RESET);
+}
+
+/****************************************************************************
+ * Name: bl602_cpu_reset
+ *
+ * Description:
+ * Reset only the CPU
+ *
+ ****************************************************************************/
+
+void bl602_cpu_reset(void)
+{
+ bl602_chip_reset(SWRST_CFG2_CTRL_CPU_RESET);
+}
+
+/****************************************************************************
+ * Name: bl602_por_reset
+ *
+ * Description:
+ * Trigger Power-on-Reset
+ *
+ ****************************************************************************/
+
+void bl602_por_reset(void)
+{
+ bl602_chip_reset(
+ SWRST_CFG2_CTRL_SYS_RESET | \
+ SWRST_CFG2_CTRL_CPU_RESET | \
+ SWRST_CFG2_CTRL_PWRON_RST);
+}
\ No newline at end of file
diff --git a/arch/risc-v/src/bl602/bl602_systemreset.h b/arch/risc-v/src/bl602/bl602_systemreset.h
new file mode 100644
index 0000000..6ce3e29
--- /dev/null
+++ b/arch/risc-v/src/bl602/bl602_systemreset.h
@@ -0,0 +1,84 @@
+/****************************************************************************
+ * arch/risc-v/src/bl602/bl602_hbn.h
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership. The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_RISCV_SRC_BL602_BL602_SYSTEMREST_H
+#define __ARCH_RISCV_SRC_BL602_BL602_SYSTEMREST_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#define bl602_sys_reset() up_systemreset()
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: bl602_cpu_reset
+ *
+ * Description:
+ * Reset only the CPU
+ *
+ ****************************************************************************/
+
+void bl602_cpu_reset(void);
+
+/****************************************************************************
+ * Name: bl602_por_reset
+ *
+ * Description:
+ * Trigger Power-on-Reset
+ *
+ ****************************************************************************/
+
+void bl602_por_reset(void);
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __ARCH_RISCV_SRC_BL602_BL602_SYSTEMREST_H */
diff --git a/boards/risc-v/bl602/bl602evb/src/Makefile b/boards/risc-v/bl602/bl602evb/src/Makefile
index 8fdb2cc..5b9a2bc 100644
--- a/boards/risc-v/bl602/bl602evb/src/Makefile
+++ b/boards/risc-v/bl602/bl602evb/src/Makefile
@@ -24,6 +24,9 @@ CSRCS = bl602_bringup.c bl602_boot.c
ifeq ($(CONFIG_LIB_BOARDCTL),y)
CSRCS += bl602_appinit.c
+ifeq ($(CONFIG_BOARDCTL_RESET),y)
+ CSRCS += bl602_reset.c
+endif
endif
include $(TOPDIR)/boards/Board.mk
diff --git a/boards/risc-v/bl602/bl602evb/src/bl602_reset.c b/boards/risc-v/bl602/bl602evb/src/bl602_reset.c
new file mode 100644
index 0000000..9342bb3
--- /dev/null
+++ b/boards/risc-v/bl602/bl602evb/src/bl602_reset.c
@@ -0,0 +1,59 @@
+/****************************************************************************
+ * boards/risc-v/bl602/evb/src/bl602_reset.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership. The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <nuttx/arch.h>
+#include <nuttx/board.h>
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_reset
+ *
+ * Description:
+ * Reset board. Support for this function is required by board-level
+ * logic if CONFIG_BOARDCTL_RESET is selected.
+ *
+ * Input Parameters:
+ * status - Status information provided with the reset event. This
+ * meaning of this status information is board-specific. If not
+ * used by a board, the value zero may be provided in calls to
+ * board_reset().
+ *
+ * Returned Value:
+ * If this function returns, then it was not possible to power-off the
+ * board due to some constraints. The return value int this case is a
+ * board-specific reason for the failure to shutdown.
+ *
+ ****************************************************************************/
+
+int board_reset(int status)
+{
+ up_systemreset();
+ return 0;
+}
+