[U-Boot] [PATCH] sysreset: add support for socfpga sysreset
Simon Goldschmidt
simon.k.r.goldschmidt at gmail.com
Fri May 3 20:21:13 UTC 2019
This moves sysreset support for socfgpa from ad-hoc code in mach-socfpga
to a UCLASS_SYSRESET based dm driver.
A side effect is that gen5 and a10 can now differ between cold and warm
reset.
Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt at gmail.com>
---
arch/arm/Kconfig | 3 +
arch/arm/mach-socfpga/Makefile | 1 -
.../mach-socfpga/include/mach/reset_manager.h | 1 +
arch/arm/mach-socfpga/reset_manager.c | 41 -------------
drivers/sysreset/Kconfig | 6 ++
drivers/sysreset/Makefile | 1 +
drivers/sysreset/sysreset_socfpga.c | 58 +++++++++++++++++++
7 files changed, 69 insertions(+), 42 deletions(-)
delete mode 100644 arch/arm/mach-socfpga/reset_manager.c
create mode 100644 drivers/sysreset/sysreset_socfpga.c
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 49f01f1ff1..656ff92bd8 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -823,6 +823,7 @@ config ARCH_SOCFPGA
select OF_CONTROL
select SPL_DM_RESET if DM_RESET
select SPL_DM_SERIAL
+ select SPL_DRIVERS_MISC_SUPPORT
select SPL_LIBCOMMON_SUPPORT
select SPL_LIBGENERIC_SUPPORT
select SPL_NAND_SUPPORT if SPL_NAND_DENALI
@@ -833,6 +834,8 @@ config ARCH_SOCFPGA
select SUPPORT_SPL
select SYS_NS16550
select SYS_THUMB_BUILD if TARGET_SOCFPGA_GEN5 || TARGET_SOCFPGA_ARRIA10
+ select SYSRESET
+ select SYSRESET_SOCFPGA
imply CMD_DM
imply CMD_MTDPARTS
imply CRC32_VERIFY
diff --git a/arch/arm/mach-socfpga/Makefile b/arch/arm/mach-socfpga/Makefile
index e66720447f..fc1181cb27 100644
--- a/arch/arm/mach-socfpga/Makefile
+++ b/arch/arm/mach-socfpga/Makefile
@@ -8,7 +8,6 @@
obj-y += board.o
obj-y += clock_manager.o
obj-y += misc.o
-obj-y += reset_manager.o
ifdef CONFIG_TARGET_SOCFPGA_GEN5
obj-y += clock_manager_gen5.o
diff --git a/arch/arm/mach-socfpga/include/mach/reset_manager.h b/arch/arm/mach-socfpga/include/mach/reset_manager.h
index 42beaecdd6..6ad037e325 100644
--- a/arch/arm/mach-socfpga/include/mach/reset_manager.h
+++ b/arch/arm/mach-socfpga/include/mach/reset_manager.h
@@ -11,6 +11,7 @@ void reset_cpu(ulong addr);
void socfpga_per_reset(u32 reset, int set);
void socfpga_per_reset_all(void);
+#define RSTMGR_CTRL_SWCOLDRSTREQ_LSB 0
#define RSTMGR_CTRL_SWWARMRSTREQ_LSB 1
/*
diff --git a/arch/arm/mach-socfpga/reset_manager.c b/arch/arm/mach-socfpga/reset_manager.c
deleted file mode 100644
index e0a01ed07a..0000000000
--- a/arch/arm/mach-socfpga/reset_manager.c
+++ /dev/null
@@ -1,41 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Copyright (C) 2013 Altera Corporation <www.altera.com>
- */
-
-
-#include <common.h>
-#include <asm/io.h>
-#include <asm/arch/reset_manager.h>
-
-#if defined(CONFIG_TARGET_SOCFPGA_STRATIX10)
-#include <asm/arch/mailbox_s10.h>
-#endif
-
-DECLARE_GLOBAL_DATA_PTR;
-
-#if !defined(CONFIG_TARGET_SOCFPGA_STRATIX10)
-static const struct socfpga_reset_manager *reset_manager_base =
- (void *)SOCFPGA_RSTMGR_ADDRESS;
-#endif
-
-/*
- * Write the reset manager register to cause reset
- */
-void reset_cpu(ulong addr)
-{
- /* request a warm reset */
-#if defined(CONFIG_TARGET_SOCFPGA_STRATIX10)
- puts("Mailbox: Issuing mailbox cmd REBOOT_HPS\n");
- mbox_reset_cold();
-#else
- writel(1 << RSTMGR_CTRL_SWWARMRSTREQ_LSB,
- &reset_manager_base->ctrl);
-#endif
- /*
- * infinite loop here as watchdog will trigger and reset
- * the processor
- */
- while (1)
- ;
-}
diff --git a/drivers/sysreset/Kconfig b/drivers/sysreset/Kconfig
index 8ce3e2e207..8b6e6626d2 100644
--- a/drivers/sysreset/Kconfig
+++ b/drivers/sysreset/Kconfig
@@ -36,6 +36,12 @@ config SYSRESET_PSCI
Enable PSCI SYSTEM_RESET function call. To use this, PSCI firmware
must be running on your system.
+config SYSRESET_SOCFPGA
+ bool "Enable support for Intel SOCFPGA family"
+ depends on ARCH_SOCFPGA
+ help
+ This enables the system reset driver support for Intel SOCFPGA SoCs.
+
config SYSRESET_TI_SCI
bool "TI System Control Interface (TI SCI) system reset driver"
depends on TI_SCI_PROTOCOL
diff --git a/drivers/sysreset/Makefile b/drivers/sysreset/Makefile
index b3728ac17f..0241b0132d 100644
--- a/drivers/sysreset/Makefile
+++ b/drivers/sysreset/Makefile
@@ -11,6 +11,7 @@ obj-$(CONFIG_SYSRESET_GPIO) += sysreset_gpio.o
obj-$(CONFIG_SYSRESET_MCP83XX) += sysreset_mpc83xx.o
obj-$(CONFIG_SYSRESET_MICROBLAZE) += sysreset_microblaze.o
obj-$(CONFIG_SYSRESET_PSCI) += sysreset_psci.o
+obj-$(CONFIG_SYSRESET_SOCFPGA) += sysreset_socfpga.o
obj-$(CONFIG_SYSRESET_TI_SCI) += sysreset-ti-sci.o
obj-$(CONFIG_SYSRESET_SYSCON) += sysreset_syscon.o
obj-$(CONFIG_SYSRESET_WATCHDOG) += sysreset_watchdog.o
diff --git a/drivers/sysreset/sysreset_socfpga.c b/drivers/sysreset/sysreset_socfpga.c
new file mode 100644
index 0000000000..b5bbf4aad6
--- /dev/null
+++ b/drivers/sysreset/sysreset_socfpga.c
@@ -0,0 +1,58 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019 Pepperl+Fuchs
+ * Simon Goldschmidt <simon.k.r.goldschmidt at gmail.com>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <sysreset.h>
+#include <asm/io.h>
+#include <asm/arch/reset_manager.h>
+
+#if defined(CONFIG_TARGET_SOCFPGA_STRATIX10)
+#include <asm/arch/mailbox_s10.h>
+#else
+static const struct socfpga_reset_manager *reset_manager_base =
+ (void *)SOCFPGA_RSTMGR_ADDRESS;
+
+#endif
+
+static int socfpga_sysreset_request(struct udevice *dev,
+ enum sysreset_t type)
+{
+#if defined(CONFIG_TARGET_SOCFPGA_STRATIX10)
+ puts("Mailbox: Issuing mailbox cmd REBOOT_HPS\n");
+ mbox_reset_cold();
+#else
+ switch (type) {
+ case SYSRESET_WARM:
+ writel(1 << RSTMGR_CTRL_SWWARMRSTREQ_LSB,
+ &reset_manager_base->ctrl);
+ break;
+ case SYSRESET_COLD:
+ writel(1 << RSTMGR_CTRL_SWCOLDRSTREQ_LSB,
+ &reset_manager_base->ctrl);
+ break;
+ default:
+ return -EPROTONOSUPPORT;
+ }
+#endif
+ return -EINPROGRESS;
+}
+
+static struct sysreset_ops socfpga_sysreset = {
+ .request = socfpga_sysreset_request,
+};
+
+U_BOOT_DRIVER(sysreset_socfpga) = {
+ .id = UCLASS_SYSRESET,
+ .name = "socfpga_sysreset",
+ .ops = &socfpga_sysreset,
+};
+
+/* The reset driver does not have a device node, so bind it here */
+U_BOOT_DEVICE(sysreset_socfpga) = {
+ .name = "socfpga_sysreset",
+};
--
2.20.1
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