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authorjmcneill <jmcneill@NetBSD.org>2022-10-31 22:23:38 +0000
committerjmcneill <jmcneill@NetBSD.org>2022-10-31 22:23:38 +0000
commit5cc4e6896a41dcff742f6896e04b6c3d88a5f604 (patch)
treedd17c8584da6fc652ae844503597750bcb7dbe20 /sys
parent89356838a7e6aa911769d2527fbeff133d6135ac (diff)
Implement zynq_platform_reset()
Diffstat (limited to 'sys')
-rw-r--r--sys/arch/arm/xilinx/zynq_platform.c23
1 files changed, 20 insertions, 3 deletions
diff --git a/sys/arch/arm/xilinx/zynq_platform.c b/sys/arch/arm/xilinx/zynq_platform.c
index 53e5b6f6d7d..c1fd44a8d12 100644
--- a/sys/arch/arm/xilinx/zynq_platform.c
+++ b/sys/arch/arm/xilinx/zynq_platform.c
@@ -1,4 +1,4 @@
-/* $NetBSD: zynq_platform.c,v 1.9 2022/10/28 20:37:03 jmcneill Exp $ */
+/* $NetBSD: zynq_platform.c,v 1.10 2022/10/31 22:23:38 jmcneill Exp $ */
/*-
* Copyright (c) 2019 The NetBSD Foundation, Inc.
@@ -35,7 +35,7 @@
#include "arml2cc.h"
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: zynq_platform.c,v 1.9 2022/10/28 20:37:03 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: zynq_platform.c,v 1.10 2022/10/31 22:23:38 jmcneill Exp $");
#include <sys/param.h>
#include <sys/bus.h>
@@ -69,7 +69,11 @@ __KERNEL_RCSID(0, "$NetBSD: zynq_platform.c,v 1.9 2022/10/28 20:37:03 jmcneill E
#define ZYNQ_IOREG_PBASE 0xe0000000
#define ZYNQ_IOREG_SIZE 0x00200000
-#define ZYNQ_GPV_VBASE (ZYNQ_IOREG_VBASE + ZYNQ_IOREG_SIZE)
+#define ZYNQ_SLCR_VBASE (ZYNQ_IOREG_VBASE + ZYNQ_IOREG_SIZE)
+#define ZYNQ_SLCR_PBASE 0xf8000000
+#define ZYNQ_SLCR_SIZE 0x00100000
+
+#define ZYNQ_GPV_VBASE (ZYNQ_SLCR_VBASE + ZYNQ_SLCR_SIZE)
#define ZYNQ_GPV_PBASE 0xf8900000
#define ZYNQ_GPV_SIZE 0x00100000
@@ -87,6 +91,12 @@ __KERNEL_RCSID(0, "$NetBSD: zynq_platform.c,v 1.9 2022/10/28 20:37:03 jmcneill E
#define ZYNQ7000_CPU1_ENTRY 0xfffffff0
#define ZYNQ7000_CPU1_ENTRY_SZ 4
+/* SLCR registers */
+#define SLCR_UNLOCK 0x008
+#define UNLOCK_KEY 0xdf0d
+#define PSS_RST_CTRL 0x200
+#define SOFT_RST __BIT(0)
+
extern struct bus_space arm_generic_bs_tag;
extern struct arm32_bus_dma_tag arm_generic_dma_tag;
@@ -99,6 +109,9 @@ zynq_platform_devmap(void)
DEVMAP_ENTRY(ZYNQ_IOREG_VBASE,
ZYNQ_IOREG_PBASE,
ZYNQ_IOREG_SIZE),
+ DEVMAP_ENTRY(ZYNQ_SLCR_VBASE,
+ ZYNQ_SLCR_PBASE,
+ ZYNQ_SLCR_SIZE),
DEVMAP_ENTRY(ZYNQ_GPV_VBASE,
ZYNQ_GPV_PBASE,
ZYNQ_GPV_SIZE),
@@ -232,7 +245,11 @@ zynq_platform_bootstrap(void)
static void
zynq_platform_reset(void)
{
+ bus_space_tag_t bst = &arm_generic_bs_tag;
+ bus_space_handle_t bsh = ZYNQ_SLCR_VBASE;
+ bus_space_write_4(bst, bsh, SLCR_UNLOCK, UNLOCK_KEY);
+ bus_space_write_4(bst, bsh, PSS_RST_CTRL, SOFT_RST);
}
static const struct arm_platform zynq_platform = {