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https://github.com/AsahiLinux/u-boot
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e160f7d430
At present devices use a simple integer offset to record the device tree node associated with the device. In preparation for supporting a live device tree, which uses a node pointer instead, refactor existing code to access this field through an inline function. Signed-off-by: Simon Glass <sjg@chromium.org>
101 lines
2.2 KiB
C
101 lines
2.2 KiB
C
/*
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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 <sysreset.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_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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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_offset(dev) == -1)
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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:
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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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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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static struct sysreset_ops sandbox_sysreset_ops = {
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.request = sandbox_sysreset_request,
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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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};
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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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