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8aa57934e5
The script based firmware loader does not use anything from the fs_loader implementation. Separate it into its own library source file and convert the mediatek PHY to use this separate code. This should reduce the amount of code that is pulled in alongside the firmware loader, as the FS loader is no longer included. Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2025 Lucien Jheng <lucienzx159@gmail.com>
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*/
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#include <command.h>
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#include <env.h>
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#include <errno.h>
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#include <linux/types.h>
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#include <log.h>
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int request_firmware_into_buf_via_script(void *buf, size_t max_size,
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const char *script_name,
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size_t *retsize)
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{
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char *args[2] = { "run", (char *)script_name };
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int ret, repeatable;
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ulong addr, size;
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if (!buf || !script_name || !max_size)
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return -EINVAL;
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/* Run the firmware loading script */
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ret = cmd_process(0, 2, args, &repeatable, NULL);
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if (ret) {
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log_err("Firmware loading script '%s' not defined or failed.\n",
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script_name);
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return -EINVAL;
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}
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/* Find out where the firmware got loaded and how long it is */
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addr = env_get_hex("fw_addr", 0);
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size = env_get_hex("fw_size", 0);
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/* Clear the variables set by the firmware loading script */
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env_set("fw_addr", NULL);
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env_set("fw_size", NULL);
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if (!addr || !size) {
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log_err("Firmware address (0x%lx) or size (0x%lx) are invalid.\n",
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addr, size);
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return -EINVAL;
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}
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if (size > max_size) {
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log_err("Loaded firmware size 0x%lx exceeded maximum allowed size 0x%zx.\n",
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size, max_size);
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return -E2BIG;
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}
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if (retsize)
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*retsize = size;
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memcpy(buf, (void *)addr, size);
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return 0;
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}
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