[U-Boot] [PATCH v2 1/1] socfpga: Creating driver for Reset Manager
Chin Liang See
clsee at altera.com
Mon Jul 1 16:16:14 CEST 2013
socfpga: Consolidating reset code into reset_manager.c.
Also separating reset configuration for virtual target
and real hardware Cyclone V development kit
Signed-off-by: Chin Liang See <clsee at altera.com>
---
arch/arm/cpu/armv7/socfpga/Makefile | 2 +-
arch/arm/cpu/armv7/socfpga/misc.c | 27 -----------
arch/arm/cpu/armv7/socfpga/reset_manager.c | 52
+++++++++++++++++++++
arch/arm/include/asm/arch-socfpga/reset_manager.h | 10 ++--
4 files changed, 60 insertions(+), 31 deletions(-)
create mode 100644 arch/arm/cpu/armv7/socfpga/reset_manager.c
diff --git a/arch/arm/cpu/armv7/socfpga/Makefile
b/arch/arm/cpu/armv7/socfpga/Makefile
index 376a4bd..518e67a 100644
--- a/arch/arm/cpu/armv7/socfpga/Makefile
+++ b/arch/arm/cpu/armv7/socfpga/Makefile
@@ -29,7 +29,7 @@ include $(TOPDIR)/config.mk
LIB = $(obj)lib$(SOC).o
SOBJS := lowlevel_init.o
-COBJS-y := misc.o timer.o
+COBJS-y := misc.o timer.o reset_manager.o
COBJS-$(CONFIG_SPL_BUILD) += spl.o
COBJS := $(COBJS-y)
diff --git a/arch/arm/cpu/armv7/socfpga/misc.c
b/arch/arm/cpu/armv7/socfpga/misc.c
index fa16424..59f5b94 100644
--- a/arch/arm/cpu/armv7/socfpga/misc.c
+++ b/arch/arm/cpu/armv7/socfpga/misc.c
@@ -17,36 +17,9 @@
#include <common.h>
#include <asm/io.h>
-#include <asm/arch/reset_manager.h>
DECLARE_GLOBAL_DATA_PTR;
-static const struct socfpga_reset_manager *reset_manager_base =
- (void *)SOCFPGA_RSTMGR_ADDRESS;
-
-/*
- * Write the reset manager register to cause reset
- */
-void reset_cpu(ulong addr)
-{
- /* request a warm reset */
- writel(RSTMGR_CTRL_SWWARMRSTREQ_LSB, &reset_manager_base->ctrl);
- /*
- * infinite loop here as watchdog will trigger and reset
- * the processor
- */
- while (1)
- ;
-}
-
-/*
- * Release peripherals from reset based on handoff
- */
-void reset_deassert_peripherals_handoff(void)
-{
- writel(0, &reset_manager_base->per_mod_reset);
-}
-
int dram_init(void)
{
gd->ram_size = get_ram_size((long *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE);
diff --git a/arch/arm/cpu/armv7/socfpga/reset_manager.c
b/arch/arm/cpu/armv7/socfpga/reset_manager.c
new file mode 100644
index 0000000..b64db68
--- /dev/null
+++ b/arch/arm/cpu/armv7/socfpga/reset_manager.c
@@ -0,0 +1,52 @@
+/*
+ * Copyright Altera Corporation (C) <2013>. All rights reserved
+ *
+ * This program is free software; you can redistribute it
+ * and/or modify it under the terms and conditions of the
+ * GNU General Public License, version 2, as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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/>.
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/reset_manager.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static const struct socfpga_reset_manager *reset_manager_base =
+ (void *)SOCFPGA_RSTMGR_ADDRESS;
+
+/*
+ * Write the reset manager register to cause reset
+ */
+void reset_cpu(ulong addr)
+{
+ /* request a warm reset */
+ writel((1 << RSTMGR_CTRL_SWWARMRSTREQ_LSB),
+ &reset_manager_base->ctrl);
+ /*
+ * infinite loop here as watchdog will trigger and reset
+ * the processor
+ */
+ while (1)
+ ;
+}
+
+/*
+ * Release peripherals from reset based on handoff
+ */
+void reset_deassert_peripherals_handoff(void)
+{
+ writel(0, &reset_manager_base->per_mod_reset);
+}
+
+
diff --git a/arch/arm/include/asm/arch-socfpga/reset_manager.h
b/arch/arm/include/asm/arch-socfpga/reset_manager.h
index d9d2c1c..4930914 100644
--- a/arch/arm/include/asm/arch-socfpga/reset_manager.h
+++ b/arch/arm/include/asm/arch-socfpga/reset_manager.h
@@ -22,16 +22,20 @@ void reset_cpu(ulong addr);
void reset_deassert_peripherals_handoff(void);
struct socfpga_reset_manager {
- u32 padding1;
+ u32 status;
u32 ctrl;
- u32 padding2;
- u32 padding3;
+ u32 counts;
+ u32 padding1;
u32 mpu_mod_reset;
u32 per_mod_reset;
u32 per2_mod_reset;
u32 brg_mod_reset;
};
+#if defined(CONFIG_SOCFPGA_VIRTUAL_TARGET)
+#define RSTMGR_CTRL_SWWARMRSTREQ_LSB 2
+#else
#define RSTMGR_CTRL_SWWARMRSTREQ_LSB 1
+#endif
#endif /* _RESET_MANAGER_H_ */
--
1.7.9.5
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