[U-Boot] [RESEND PATCH v5 1/1] socfpga: Creating driver for Reset Manager
Chin Liang See
clsee at altera.com
Tue Aug 6 16:09:35 CEST 2013
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>
Reviewed-by: Pavel Machek
Cc: Wolfgang Denk <wd at denx.de>
CC: Pavel Machek <pavel at denx.de>
Cc: Dinh Nguyen <dinguyen at altera.com>
Cc: Tom Rini <trini at ti.com>
Cc: Albert Aribaud <albert.u.boot at aribaud.net>
---
Changes for v2:
- Fixed the long subject of the patch
- Consolidated the reset_manager structure between virtual target and dev kit
Changes for v3:
- Added change log for each revision change
- Removed the < > between the date of copyright header
Changes for v4:
- Updated the license header for reset_manager.c
Changes for v5:
- Updated the license header for reset_manager.c to SPDX
---
arch/arm/cpu/armv7/socfpga/Makefile | 2 +-
arch/arm/cpu/armv7/socfpga/misc.c | 27 --------------
arch/arm/cpu/armv7/socfpga/reset_manager.c | 40 +++++++++++++++++++++
arch/arm/include/asm/arch-socfpga/reset_manager.h | 10 ++++--
4 files changed, 48 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 3b48ac9..5024fc5 100644
--- a/arch/arm/cpu/armv7/socfpga/Makefile
+++ b/arch/arm/cpu/armv7/socfpga/Makefile
@@ -13,7 +13,7 @@ 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 66edb3c..2f1c716 100644
--- a/arch/arm/cpu/armv7/socfpga/misc.c
+++ b/arch/arm/cpu/armv7/socfpga/misc.c
@@ -6,36 +6,9 @@
#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..2281743
--- /dev/null
+++ b/arch/arm/cpu/armv7/socfpga/reset_manager.c
@@ -0,0 +1,40 @@
+/*
+ * Copyright Altera Corporation (C) 2013
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#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 13d7357..3e95476 100644
--- a/arch/arm/include/asm/arch-socfpga/reset_manager.h
+++ b/arch/arm/include/asm/arch-socfpga/reset_manager.h
@@ -11,16 +11,20 @@ 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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