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f9b139342c
The extension_overlay_cmd environment variable approach is specific to the U-Boot extension_board command, while other boot flows (pxe_utils, bootstd) handle overlay loading differently. Move the extension_overlay_cmd execution out of the core extension framework to the command level. This decouples the framework from command-specific behavior and prepares for future extension support in other boot flows. Signed-off-by: Kory Maincent (TI.com) <kory.maincent@bootlin.com> Reviewed-by: Simon Glass <sjg@chromium.org>
94 lines
1.8 KiB
C
94 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2025 Köry Maincent <kory.maincent@bootlin.com>
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*/
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#include <alist.h>
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#include <command.h>
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#include <env.h>
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#include <extension_board.h>
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#include <fdt_support.h>
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#include <malloc.h>
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#include <mapmem.h>
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#include <dm/device-internal.h>
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#include <dm/lists.h>
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#include <dm/uclass.h>
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struct alist *extension_get_list(void)
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{
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struct udevice *dev;
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if (uclass_first_device_err(UCLASS_EXTENSION, &dev))
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return NULL;
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return dev_get_priv(dev);
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}
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int extension_probe(struct udevice *dev)
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{
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struct alist *extension_list = dev_get_priv(dev);
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alist_init_struct(extension_list, struct extension);
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return 0;
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}
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int extension_remove(struct udevice *dev)
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{
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struct alist *extension_list = dev_get_priv(dev);
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alist_uninit(extension_list);
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return 0;
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}
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int extension_scan(void)
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{
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struct alist *extension_list = extension_get_list();
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const struct extension_ops *ops;
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struct udevice *dev;
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int ret;
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ret = uclass_first_device_err(UCLASS_EXTENSION, &dev);
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if (ret)
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return ret;
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if (!extension_list)
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return -ENODEV;
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ops = extension_get_ops(dev);
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alist_empty(extension_list);
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return ops->scan(dev, extension_list);
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}
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int extension_apply(struct fdt_header *working_fdt, ulong size)
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{
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struct fdt_header *blob;
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ulong overlay_addr;
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int ret;
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overlay_addr = env_get_hex("extension_overlay_addr", 0);
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if (!overlay_addr) {
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printf("Environment extension_overlay_addr is missing\n");
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return -EINVAL;
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}
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fdt_shrink_to_minimum(working_fdt, size);
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blob = map_sysmem(overlay_addr, 0);
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if (!fdt_valid(&blob)) {
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printf("Invalid overlay devicetree\n");
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return -EINVAL;
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}
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/* Apply method prints messages on error */
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ret = fdt_overlay_apply_verbose(working_fdt, blob);
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if (ret)
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printf("Failed to apply overlay\n");
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return ret;
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}
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UCLASS_DRIVER(extension) = {
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.name = "extension",
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.id = UCLASS_EXTENSION,
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};
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