diff options
author | Bin Meng <bmeng.cn@gmail.com> | 2018-07-19 03:07:30 -0700 |
---|---|---|
committer | Bin Meng <bmeng.cn@gmail.com> | 2018-07-20 09:33:22 +0800 |
commit | 4c99ccfe13e8f1a1d3cf5be567fa16e2aa68188e (patch) | |
tree | 5d45b9363b72cb7c85266597fcb290581041736b /arch/x86/cpu/tangier | |
parent | c81a8f54553a31925d4d26435bd104543bbe85af (diff) |
x86: tangier: Add a sysreset driver
This adds a reset driver for tangier processor.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Diffstat (limited to 'arch/x86/cpu/tangier')
-rw-r--r-- | arch/x86/cpu/tangier/Makefile | 2 | ||||
-rw-r--r-- | arch/x86/cpu/tangier/sysreset.c | 48 |
2 files changed, 49 insertions, 1 deletions
diff --git a/arch/x86/cpu/tangier/Makefile b/arch/x86/cpu/tangier/Makefile index 44ccb3ff91..827448257e 100644 --- a/arch/x86/cpu/tangier/Makefile +++ b/arch/x86/cpu/tangier/Makefile @@ -2,5 +2,5 @@ # # Copyright (c) 2017 Intel Corporation -obj-y += car.o tangier.o sdram.o +obj-y += car.o tangier.o sdram.o sysreset.o obj-$(CONFIG_GENERATE_ACPI_TABLE) += acpi.o diff --git a/arch/x86/cpu/tangier/sysreset.c b/arch/x86/cpu/tangier/sysreset.c new file mode 100644 index 0000000000..e762ee1b81 --- /dev/null +++ b/arch/x86/cpu/tangier/sysreset.c @@ -0,0 +1,48 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com> + * + * Reset driver for tangier processor + */ + +#include <common.h> +#include <dm.h> +#include <sysreset.h> +#include <asm/scu.h> + +static int tangier_sysreset_request(struct udevice *dev, enum sysreset_t type) +{ + int value; + + switch (type) { + case SYSRESET_WARM: + value = IPCMSG_WARM_RESET; + break; + case SYSRESET_COLD: + value = IPCMSG_COLD_RESET; + break; + default: + return -ENOSYS; + } + + scu_ipc_simple_command(value, 0); + + return -EINPROGRESS; +} + +static const struct udevice_id tangier_sysreset_ids[] = { + { .compatible = "intel,reset-tangier" }, + { } +}; + +static struct sysreset_ops tangier_sysreset_ops = { + .request = tangier_sysreset_request, +}; + +U_BOOT_DRIVER(tangier_sysreset) = { + .name = "tangier-sysreset", + .id = UCLASS_SYSRESET, + .of_match = tangier_sysreset_ids, + .ops = &tangier_sysreset_ops, + .flags = DM_FLAG_PRE_RELOC, +}; |