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857f39d7b0
It seems that SYSRESET_POWER_OFF was added recently, and all previous code used SYSRESET_POWER for poweroff. SYSRESET_POWER is supposed to be a PMIC-level power cycle, not a poweroff. (Comment by Simon Glass) SYSRESET_POWER means to do a power reset (removing and reinstating all power) SYSRESET_POWER_OFF means to turn the device off and leave it off Signed-off-by: Urja Rannikko <urjaman@gmail.com> Reviewed-by: Patrick Delaunay <patrick.delaunay@st.com> (Update comment to help understand the patch) Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
137 lines
3.0 KiB
C
137 lines
3.0 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2015 Google, Inc
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* Written by Simon Glass <sjg@chromium.org>
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*/
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#include <common.h>
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#include <dm.h>
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#include <errno.h>
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#include <sysreset.h>
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#include <asm/state.h>
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#include <asm/test.h>
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static int sandbox_warm_sysreset_request(struct udevice *dev,
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enum sysreset_t type)
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{
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struct sandbox_state *state = state_get_current();
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switch (type) {
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case SYSRESET_WARM:
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state->last_sysreset = type;
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break;
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default:
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return -ENOSYS;
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}
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if (!state->sysreset_allowed[type])
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return -EACCES;
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return -EINPROGRESS;
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}
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int sandbox_warm_sysreset_get_status(struct udevice *dev, char *buf, int size)
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{
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strlcpy(buf, "Reset Status: WARM", size);
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return 0;
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}
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int sandbox_warm_sysreset_get_last(struct udevice *dev)
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{
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return SYSRESET_WARM;
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}
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static int sandbox_sysreset_request(struct udevice *dev, enum sysreset_t type)
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{
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struct sandbox_state *state = state_get_current();
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/*
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* If we have a device tree, the device we created from platform data
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* (see the U_BOOT_DEVICE() declaration below) should not do anything.
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* If we are that device, return an error.
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*/
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if (state->fdt_fname && !dev_of_valid(dev))
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return -ENODEV;
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switch (type) {
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case SYSRESET_COLD:
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state->last_sysreset = type;
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break;
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case SYSRESET_POWER_OFF:
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state->last_sysreset = type;
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if (!state->sysreset_allowed[type])
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return -EACCES;
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sandbox_exit();
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break;
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case SYSRESET_POWER:
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if (!state->sysreset_allowed[type])
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return -EACCES;
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sandbox_exit();
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default:
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return -ENOSYS;
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}
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if (!state->sysreset_allowed[type])
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return -EACCES;
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return -EINPROGRESS;
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}
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int sandbox_sysreset_get_status(struct udevice *dev, char *buf, int size)
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{
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strlcpy(buf, "Reset Status: COLD", size);
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return 0;
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}
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int sandbox_sysreset_get_last(struct udevice *dev)
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{
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struct sandbox_state *state = state_get_current();
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/*
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* The first phase is a power reset, after that we assume we don't
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* know.
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*/
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return state->jumped_fname ? SYSRESET_WARM : SYSRESET_POWER;
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}
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static struct sysreset_ops sandbox_sysreset_ops = {
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.request = sandbox_sysreset_request,
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.get_status = sandbox_sysreset_get_status,
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.get_last = sandbox_sysreset_get_last,
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};
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static const struct udevice_id sandbox_sysreset_ids[] = {
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{ .compatible = "sandbox,reset" },
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{ }
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};
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U_BOOT_DRIVER(sysreset_sandbox) = {
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.name = "sysreset_sandbox",
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.id = UCLASS_SYSRESET,
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.of_match = sandbox_sysreset_ids,
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.ops = &sandbox_sysreset_ops,
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};
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static struct sysreset_ops sandbox_warm_sysreset_ops = {
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.request = sandbox_warm_sysreset_request,
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.get_status = sandbox_warm_sysreset_get_status,
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.get_last = sandbox_warm_sysreset_get_last,
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};
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static const struct udevice_id sandbox_warm_sysreset_ids[] = {
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{ .compatible = "sandbox,warm-reset" },
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{ }
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};
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U_BOOT_DRIVER(warm_sysreset_sandbox) = {
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.name = "warm_sysreset_sandbox",
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.id = UCLASS_SYSRESET,
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.of_match = sandbox_warm_sysreset_ids,
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.ops = &sandbox_warm_sysreset_ops,
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};
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/* This is here in case we don't have a device tree */
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U_BOOT_DEVICE(sysreset_sandbox_non_fdt) = {
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.name = "sysreset_sandbox",
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};
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