fsl-soc.c

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/*
 * Freescale SOC support functions
 *
 * Author: Scott Wood <[email protected]>
 *
 * 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 "types.h"
#include "fsl-soc.h"
#include "stdio.h"

static u32 prop_buf[MAX_PROP_LEN / 4];

u32 *fsl_get_immr(void)
{
    void *soc;
    unsigned long ret = 0;

    soc = find_node_by_devtype(NULL, "soc");
    if (soc) {
        int size;
        u32 naddr;

        size = getprop(soc, "#address-cells", prop_buf, MAX_PROP_LEN);
        if (size == 4)
            naddr = prop_buf[0];
        else
            naddr = 2;

        if (naddr != 1 && naddr != 2)
            goto err;

        size = getprop(soc, "ranges", prop_buf, MAX_PROP_LEN);

        if (size < 12)
            goto err;
        if (prop_buf[0] != 0)
            goto err;
        if (naddr == 2 && prop_buf[1] != 0)
            goto err;

        if (!dt_xlate_addr(soc, prop_buf + naddr, 8, &ret))
            ret = 0;
    }

err:
    if (!ret)
        printf("fsl_get_immr: Failed to find immr base\r\n");

    return (u32 *)ret;
}