diff options
Diffstat (limited to 'roms/u-boot/drivers/sysreset/sysreset_ast.c')
-rw-r--r-- | roms/u-boot/drivers/sysreset/sysreset_ast.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/roms/u-boot/drivers/sysreset/sysreset_ast.c b/roms/u-boot/drivers/sysreset/sysreset_ast.c new file mode 100644 index 000000000..d747ed00a --- /dev/null +++ b/roms/u-boot/drivers/sysreset/sysreset_ast.c @@ -0,0 +1,58 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * (C) Copyright 2016 Google, Inc + */ + +#include <common.h> +#include <dm.h> +#include <errno.h> +#include <log.h> +#include <sysreset.h> +#include <wdt.h> +#include <asm/io.h> +#include <asm/arch/wdt.h> +#include <linux/err.h> +#include <hang.h> + +static int ast_sysreset_request(struct udevice *dev, enum sysreset_t type) +{ + struct udevice *wdt; + u32 reset_mode; + int ret = uclass_first_device(UCLASS_WDT, &wdt); + + if (ret) + return ret; + + switch (type) { + case SYSRESET_WARM: + reset_mode = WDT_CTRL_RESET_CPU; + break; + case SYSRESET_COLD: + reset_mode = WDT_CTRL_RESET_CHIP; + break; + default: + return -EPROTONOSUPPORT; + } + +#if !defined(CONFIG_SPL_BUILD) + ret = wdt_expire_now(wdt, reset_mode); + if (ret) { + debug("Sysreset failed: %d", ret); + return ret; + } +#else + hang(); +#endif + + return -EINPROGRESS; +} + +static struct sysreset_ops ast_sysreset = { + .request = ast_sysreset_request, +}; + +U_BOOT_DRIVER(sysreset_ast) = { + .name = "ast_sysreset", + .id = UCLASS_SYSRESET, + .ops = &ast_sysreset, +}; |