247970978d
Follow the order used by memcpy() as it may be less confusing. Signed-off-by: Simon Glass <sjg@chromium.org>
113 lines
2.7 KiB
C
113 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Verified Boot for Embedded (VBE) loading firmware phases
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*
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* Copyright 2022 Google LLC
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* Written by Simon Glass <sjg@chromium.org>
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*/
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#define LOG_CATEGORY LOGC_BOOT
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#include <common.h>
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#include <dm.h>
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#include <bootflow.h>
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#include <vbe.h>
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#include <version_string.h>
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#include <dm/device-internal.h>
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#include "vbe_simple.h"
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int vbe_simple_fixup_node(ofnode node, struct simple_state *state)
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{
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const char *version, *str;
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int ret;
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version = strdup(state->fw_version);
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if (!version)
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return log_msg_ret("dup", -ENOMEM);
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ret = ofnode_write_string(node, "cur-version", version);
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if (ret)
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return log_msg_ret("ver", ret);
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ret = ofnode_write_u32(node, "cur-vernum", state->fw_vernum);
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if (ret)
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return log_msg_ret("num", ret);
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/* Drop the 'U-Boot ' at the start */
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str = version_string;
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if (!strncmp("U-Boot ", str, 7))
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str += 7;
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ret = ofnode_write_string(node, "bootloader-version", str);
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if (ret)
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return log_msg_ret("bl", ret);
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return 0;
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}
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/**
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* bootmeth_vbe_simple_ft_fixup() - Write out all VBE simple data to the DT
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*
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* @ctx: Context for event
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* @event: Event to process
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* @return 0 if OK, -ve on error
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*/
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static int bootmeth_vbe_simple_ft_fixup(void *ctx, struct event *event)
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{
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oftree tree = event->data.ft_fixup.tree;
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struct udevice *dev;
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/*
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* Ideally we would have driver model support for fixups, but that does
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* not exist yet. It is a step too far to try to do this before VBE is
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* in place.
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*/
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for (vbe_find_first_device(&dev); dev; vbe_find_next_device(&dev)) {
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struct simple_state state;
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ofnode node, subnode, chosen;
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int ret;
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if (strcmp("vbe_simple", dev->driver->name))
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continue;
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/* Check if there is a node to fix up, adding if not */
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chosen = oftree_path(tree, "/chosen");
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if (!ofnode_valid(chosen))
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continue;
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ret = device_probe(dev);
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if (ret) {
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/*
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* This should become an error when VBE is updated to
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* only bind this device when a node exists
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*/
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log_debug("VBE device '%s' failed to probe (err=%d)",
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dev->name, ret);
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return 0;
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}
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ret = ofnode_add_subnode(chosen, "fwupd", &node);
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if (ret && ret != -EEXIST)
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return log_msg_ret("fwu", ret);
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ret = ofnode_add_subnode(node, dev->name, &subnode);
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if (ret && ret != -EEXIST)
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return log_msg_ret("dev", ret);
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/* Copy over the vbe properties for fwupd */
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log_debug("Fixing up: %s\n", dev->name);
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ret = ofnode_copy_props(subnode, dev_ofnode(dev));
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if (ret)
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return log_msg_ret("cp", ret);
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ret = vbe_simple_read_state(dev, &state);
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if (ret)
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return log_msg_ret("read", ret);
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ret = vbe_simple_fixup_node(subnode, &state);
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if (ret)
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return log_msg_ret("fix", ret);
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}
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return 0;
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}
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EVENT_SPY_FULL(EVT_FT_FIXUP, bootmeth_vbe_simple_ft_fixup);
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