projects / thirdparty / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 83d290c5 | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 4697abea | 2 | /* |
| 3 | * (C) Copyright 2016 Google, Inc | |
| 4697abea | 4 | */ |
| 5 | ||
| d678a59d | 6 | #include <common.h> |
| 4697abea | 7 | #include <dm.h> |
| 8 | #include <errno.h> | |
| f7ae49fc | 9 | #include <log.h> |
| 4697abea | 10 | #include <sysreset.h> |
| 99f8ad73 | 11 | #include <wdt.h> |
| 4697abea | 12 | #include <asm/io.h> |
| 13 | #include <asm/arch/wdt.h> | |
| 14 | #include <linux/err.h> | |
| 4a84cf06 | 15 | #include <hang.h> |
| 4697abea | 16 | |
| 4697abea | 17 | static int ast_sysreset_request(struct udevice *dev, enum sysreset_t type) |
| 18 | { | |
| 99f8ad73 | 19 | struct udevice *wdt; |
| 20 | u32 reset_mode; | |
| c726fc01 | 21 | int ret = uclass_first_device_err(UCLASS_WDT, &wdt); |
| 4697abea | 22 | |
| 99f8ad73 | 23 | if (ret) |
| 24 | return ret; | |
| 4697abea | 25 | |
| 26 | switch (type) { | |
| 27 | case SYSRESET_WARM: | |
| 28 | reset_mode = WDT_CTRL_RESET_CPU; | |
| 29 | break; | |
| 30 | case SYSRESET_COLD: | |
| 31 | reset_mode = WDT_CTRL_RESET_CHIP; | |
| 32 | break; | |
| 33 | default: | |
| 34 | return -EPROTONOSUPPORT; | |
| 35 | } | |
| 36 | ||
| 4a84cf06 | 37 | #if !defined(CONFIG_SPL_BUILD) |
| 99f8ad73 | 38 | ret = wdt_expire_now(wdt, reset_mode); |
| 39 | if (ret) { | |
| 40 | debug("Sysreset failed: %d", ret); | |
| 41 | return ret; | |
| 42 | } | |
| 4a84cf06 CWW |
43 | #else |
| 44 | hang(); | |
| 45 | #endif | |
| 4697abea | 46 | |
| 47 | return -EINPROGRESS; | |
| 48 | } | |
| 49 | ||
| 50 | static struct sysreset_ops ast_sysreset = { | |
| 51 | .request = ast_sysreset_request, | |
| 52 | }; | |
| 53 | ||
| 54 | U_BOOT_DRIVER(sysreset_ast) = { | |
| 55 | .name = "ast_sysreset", | |
| 56 | .id = UCLASS_SYSRESET, | |
| 57 | .ops = &ast_sysreset, | |
| 58 | }; |