Add drivers for sandbox. One can only perform a warm reset (which does nothing). The other can perform a cold reset or a power reset (the latter will quit U-Boot). These can be used for testing the reset uclass. Signed-off-by: Simon Glass <sjg@chromium.org>master
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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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* SPDX-License-Identifier: GPL-2.0+ |
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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 <reset.h> |
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#include <asm/state.h> |
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#include <asm/test.h> |
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DECLARE_GLOBAL_DATA_PTR; |
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static int sandbox_warm_reset_request(struct udevice *dev, enum reset_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 RESET_WARM: |
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state->last_reset = 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->reset_allowed[type]) |
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return -EACCES; |
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return -EINPROGRESS; |
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} |
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static int sandbox_reset_request(struct udevice *dev, enum reset_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 (gd->fdt_blob && dev->of_offset == -1) |
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return -ENODEV; |
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switch (type) { |
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case RESET_COLD: |
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state->last_reset = type; |
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break; |
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case RESET_POWER: |
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state->last_reset = type; |
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if (!state->reset_allowed[type]) |
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return -EACCES; |
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/* TODO: sandbox_exit(); */ |
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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->reset_allowed[type]) |
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return -EACCES; |
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return -EINPROGRESS; |
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} |
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static struct reset_ops sandbox_reset_ops = { |
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.request = sandbox_reset_request, |
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}; |
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static const struct udevice_id sandbox_reset_ids[] = { |
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{ .compatible = "sandbox,reset" }, |
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{ } |
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}; |
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U_BOOT_DRIVER(reset_sandbox) = { |
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.name = "reset_sandbox", |
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.id = UCLASS_RESET, |
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.of_match = sandbox_reset_ids, |
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.ops = &sandbox_reset_ops, |
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}; |
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static struct reset_ops sandbox_warm_reset_ops = { |
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.request = sandbox_warm_reset_request, |
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}; |
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static const struct udevice_id sandbox_warm_reset_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_reset_sandbox) = { |
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.name = "warm_reset_sandbox", |
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.id = UCLASS_RESET, |
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.of_match = sandbox_warm_reset_ids, |
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.ops = &sandbox_warm_reset_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(reset_sandbox_non_fdt) = { |
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.name = "reset_sandbox", |
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}; |
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