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/*
 *  nextpnr -- Next Generation Place and Route
 *
 *  Copyright (C) 2018  Miodrag Milanovic <micko@yosyshq.com>
 *
 *  Permission to use, copy, modify, and/or distribute this software for any
 *  purpose with or without fee is hereby granted, provided that the above
 *  copyright notice and this permission notice appear in all copies.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 *  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 *  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 *  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 *  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 *  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 *  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 */

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include "../basewindow.h"

NEXTPNR_NAMESPACE_BEGIN

class MainWindow : public BaseMainWindow
{
    Q_OBJECT

  public:
    explicit MainWindow(std::unique_ptr<Context> context, CommandHandler *handler, QWidget *parent = 0);
    virtual ~MainWindow();

  public:
    void createMenu();

  protected:
    void load_pcf(std::string filename);

    void onDisableActions() override;
    void onUpdateActions() override;

  protected Q_SLOTS:
    void new_proj() override;

    void open_pcf();
    void save_asc();

    void newContext(Context *ctx);

  private:
    QAction *actionLoadPCF;
    QAction *actionSaveAsc;
};

NEXTPNR_NAMESPACE_END

#endif // MAINWINDOW_H
e_t len; + int ret; + + ret = mtd->read(mtd, offset, 4, &len, (void *)&magic); + if (ret || len != sizeof(magic)) + return 0; + + if (le32_to_cpu(magic) != UBOOT_MAGIC) + return 0; + + ret = mtd->read(mtd, offset + 12, 4, &len, (void *)&temp); + if (ret || len != sizeof(temp)) + return 0; + + return temp + 0x40; +} + +static int detect_squashfs_partition(struct mtd_info *mtd, unsigned long offset) +{ + unsigned long temp; + size_t len; + int ret; + + ret = mtd->read(mtd, offset, 4, &len, (void *)&temp); + if (ret || len != sizeof(temp)) + return 0; + + return le32_to_cpu(temp) == SQUASHFS_MAGIC; +} + +static int split_uimage(struct mtd_info *mtd, + const struct mtd_partition *part) +{ + static struct mtd_partition split_partitions[] = { + { + .name = "kernel", + .offset = 0x0, + .size = 0x0, + }, { + .name = "rootfs", + .offset = 0x0, + .size = 0x0, + }, + }; + + split_partitions[0].size = find_uimage_size(mtd, part->offset); + if (!split_partitions[0].size) { + printk(KERN_NOTICE "no uImage found in linux partition\n"); + return -1; + } + + if (!detect_squashfs_partition(mtd, + part->offset + + split_partitions[0].size)) { + split_partitions[0].size &= ~(mtd->erasesize - 1); + split_partitions[0].size += mtd->erasesize; + } + + split_partitions[0].offset = part->offset; + split_partitions[1].offset = part->offset + split_partitions[0].size; + split_partitions[1].size = part->size - split_partitions[0].size; + + add_mtd_partitions(mtd, split_partitions, 2); + + return 0; +} +#endif + /* * This function, given a master MTD object and a partition table, creates * and registers slave MTD objects which are bound to the master according to @@ -893,6 +969,17 @@ int add_mtd_partitions(struct mtd_info * add_mtd_device(&slave->mtd); +#ifdef CONFIG_MTD_UIMAGE_SPLIT + if (!strcmp(parts[i].name, "linux")) { + ret = split_uimage(master, &parts[i]); + + if (ret) { + printk(KERN_WARNING + "Can't split linux partition\n"); + } + } +#endif + if (!strcmp(parts[i].name, "rootfs")) { #ifdef CONFIG_MTD_ROOTFS_ROOT_DEV if (ROOT_DEV == 0) {