Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

/*

 * Old U-boot compatibility for MPC5200

 *

 * Author: Grant Likely <grant.likely@secretlab.ca>

 *

 * Copyright (c) 2007 Secret Lab Technologies Ltd.

 * Copyright (c) 2007 Freescale Semiconductor, Inc.

 *

 * This program is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 as published

 * by the Free Software Foundation.

 */

#include "ops.h"

#include "stdio.h"

#include "io.h"

#include "cuboot.h"

#define TARGET_PPC_MPC52xx

#include "ppcboot.h"

static bd_t bd;

static void platform_fixups(void)

{

        void *soc, *reg;

        int div;

        u32 sysfreq;

        dt_fixup_memory(bd.bi_memstart, bd.bi_memsize);

        dt_fixup_mac_addresses(bd.bi_enetaddr);

        dt_fixup_cpu_clocks(bd.bi_intfreq, bd.bi_busfreq / 4, bd.bi_busfreq);

        /* Unfortunately, the specific model number is encoded in the

         * soc node name in existing dts files -- once that is fixed,

         * this can do a simple path lookup.

         */

        soc = find_node_by_devtype(NULL, "soc");

        if (soc) {

                setprop(soc, "bus-frequency", &bd.bi_ipbfreq,

                        sizeof(bd.bi_ipbfreq));

                if (!dt_xlate_reg(soc, 0, (void*)&reg, NULL))

                        return;

                div = in_8(reg + 0x204) & 0x0020 ? 8 : 4;

                sysfreq = bd.bi_busfreq * div;

                setprop(soc, "system-frequency", &sysfreq, sizeof(sysfreq));

        }

}

void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,

                   unsigned long r6, unsigned long r7)

{

        CUBOOT_INIT();

        ft_init(_dtb_start, _dtb_end - _dtb_start, 32);

        serial_console_init();

        platform_ops.fixups = platform_fixups;

}