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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 | // SPDX-License-Identifier: GPL-2.0+ /* * Copyright (c) 2015 Google, Inc * Written by Simon Glass <sjg@chromium.org> */ #include <common.h> #include <dm.h> #include <errno.h> #include <sysreset.h> #include <asm/state.h> #include <asm/test.h> static int sandbox_warm_sysreset_request(struct udevice *dev, enum sysreset_t type) { struct sandbox_state *state = state_get_current(); switch (type) { case SYSRESET_WARM: state->last_sysreset = type; break; default: return -ENOSYS; } if (!state->sysreset_allowed[type]) return -EACCES; return -EINPROGRESS; } int sandbox_warm_sysreset_get_status(struct udevice *dev, char *buf, int size) { strlcpy(buf, "Reset Status: WARM", size); return 0; } int sandbox_warm_sysreset_get_last(struct udevice *dev) { return SYSRESET_WARM; } static int sandbox_sysreset_request(struct udevice *dev, enum sysreset_t type) { struct sandbox_state *state = state_get_current(); /* * If we have a device tree, the device we created from platform data * (see the U_BOOT_DRVINFO() declaration below) should not do anything. * If we are that device, return an error. */ if (state->fdt_fname && !dev_has_ofnode(dev)) return -ENODEV; switch (type) { case SYSRESET_COLD: state->last_sysreset = type; if (!state->sysreset_allowed[type]) return -EACCES; sandbox_reset(); break; case SYSRESET_POWER_OFF: state->last_sysreset = type; if (!state->sysreset_allowed[type]) return -EACCES; sandbox_exit(); break; case SYSRESET_POWER: if (!state->sysreset_allowed[type]) return -EACCES; sandbox_exit(); default: return -ENOSYS; } if (!state->sysreset_allowed[type]) return -EACCES; return -EINPROGRESS; } int sandbox_sysreset_get_status(struct udevice *dev, char *buf, int size) { strlcpy(buf, "Reset Status: COLD", size); return 0; } int sandbox_sysreset_get_last(struct udevice *dev) { struct sandbox_state *state = state_get_current(); /* * The first phase is a power reset, after that we assume we don't * know. */ return state->jumped_fname ? SYSRESET_WARM : SYSRESET_POWER; } static struct sysreset_ops sandbox_sysreset_ops = { .request = sandbox_sysreset_request, .get_status = sandbox_sysreset_get_status, .get_last = sandbox_sysreset_get_last, }; static const struct udevice_id sandbox_sysreset_ids[] = { { .compatible = "sandbox,reset" }, { } }; U_BOOT_DRIVER(sysreset_sandbox) = { .name = "sysreset_sandbox", .id = UCLASS_SYSRESET, .of_match = sandbox_sysreset_ids, .ops = &sandbox_sysreset_ops, }; static struct sysreset_ops sandbox_warm_sysreset_ops = { .request = sandbox_warm_sysreset_request, .get_status = sandbox_warm_sysreset_get_status, .get_last = sandbox_warm_sysreset_get_last, }; static const struct udevice_id sandbox_warm_sysreset_ids[] = { { .compatible = "sandbox,warm-reset" }, { } }; U_BOOT_DRIVER(warm_sysreset_sandbox) = { .name = "warm_sysreset_sandbox", .id = UCLASS_SYSRESET, .of_match = sandbox_warm_sysreset_ids, .ops = &sandbox_warm_sysreset_ops, }; #if CONFIG_IS_ENABLED(OF_REAL) /* This is here in case we don't have a device tree */ U_BOOT_DRVINFO(sysreset_sandbox_non_fdt) = { .name = "sysreset_sandbox", }; #endif |