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5b0b43e0e2
We move qfw into its own uclass and split the PIO functions into a specific driver for that uclass. The PIO driver is selected in the qemu-x86 board config (this covers x86 and x86_64). include/qfw.h is cleaned up and documentation added. Signed-off-by: Asherah Connor <ashe@kivikakk.ee> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Bin Meng <bmeng.cn@gmail.com>
105 lines
2.1 KiB
C
105 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2015 Miao Yan <yanmiaobest@gmail.com>
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* (C) Copyright 2021 Asherah Connor <ashe@kivikakk.ee>
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*/
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#include <dm.h>
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#include <dm/uclass.h>
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#include <qfw.h>
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#include <stdlib.h>
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int qfw_get_dev(struct udevice **devp)
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{
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return uclass_first_device_err(UCLASS_QFW, devp);
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}
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int qfw_online_cpus(struct udevice *dev)
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{
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u16 nb_cpus;
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qfw_read_entry(dev, FW_CFG_NB_CPUS, 2, &nb_cpus);
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return le16_to_cpu(nb_cpus);
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}
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int qfw_read_firmware_list(struct udevice *dev)
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{
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int i;
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u32 count;
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struct fw_file *file;
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struct list_head *entry;
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struct qfw_dev *qdev = dev_get_uclass_priv(dev);
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/* don't read it twice */
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if (!list_empty(&qdev->fw_list))
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return 0;
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qfw_read_entry(dev, FW_CFG_FILE_DIR, 4, &count);
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if (!count)
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return 0;
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count = be32_to_cpu(count);
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for (i = 0; i < count; i++) {
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file = malloc(sizeof(*file));
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if (!file) {
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printf("error: allocating resource\n");
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goto err;
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}
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qfw_read_entry(dev, FW_CFG_INVALID,
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sizeof(struct fw_cfg_file), &file->cfg);
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file->addr = 0;
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list_add_tail(&file->list, &qdev->fw_list);
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}
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return 0;
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err:
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list_for_each(entry, &qdev->fw_list) {
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file = list_entry(entry, struct fw_file, list);
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free(file);
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}
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return -ENOMEM;
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}
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struct fw_file *qfw_find_file(struct udevice *dev, const char *name)
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{
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struct list_head *entry;
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struct fw_file *file;
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struct qfw_dev *qdev = dev_get_uclass_priv(dev);
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list_for_each(entry, &qdev->fw_list) {
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file = list_entry(entry, struct fw_file, list);
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if (!strcmp(file->cfg.name, name))
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return file;
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}
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return NULL;
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}
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struct fw_file *qfw_file_iter_init(struct udevice *dev,
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struct fw_cfg_file_iter *iter)
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{
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struct qfw_dev *qdev = dev_get_uclass_priv(dev);
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iter->entry = qdev->fw_list.next;
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iter->end = &qdev->fw_list;
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return list_entry((struct list_head *)iter->entry,
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struct fw_file, list);
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}
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struct fw_file *qfw_file_iter_next(struct fw_cfg_file_iter *iter)
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{
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iter->entry = ((struct list_head *)iter->entry)->next;
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return list_entry((struct list_head *)iter->entry,
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struct fw_file, list);
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}
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bool qfw_file_iter_end(struct fw_cfg_file_iter *iter)
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{
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return iter->entry == iter->end;
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}
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