ep405.c

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/*
 * Embedded Planet EP405 with PlanetCore firmware
 *
 * (c) Benjamin Herrenschmidt <[email protected]>, IBM Corp,\
 *
 * Based on ep88xc.c by
 *
 * 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 "stdio.h"
#include "planetcore.h"
#include "dcr.h"
#include "4xx.h"
#include "io.h"

static char *table;
static u64 mem_size;

static void platform_fixups(void)
{
    u64 val;
    void *nvrtc;

    dt_fixup_memory(0, mem_size);
    planetcore_set_mac_addrs(table);

    if (!planetcore_get_decimal(table, PLANETCORE_KEY_CRYSTAL_HZ, &val)) {
        printf("No PlanetCore crystal frequency key.\r\n");
        return;
    }
    ibm405gp_fixup_clocks(val, 0xa8c000);
    ibm4xx_quiesce_eth((u32 *)0xef600800, NULL);
    ibm4xx_fixup_ebc_ranges("/plb/ebc");

    if (!planetcore_get_decimal(table, PLANETCORE_KEY_KB_NVRAM, &val)) {
        printf("No PlanetCore NVRAM size key.\r\n");
        return;
    }
    nvrtc = finddevice("/plb/ebc/nvrtc@4,200000");
    if (nvrtc != NULL) {
        u32 reg[3] = { 4, 0x200000, 0};
        getprop(nvrtc, "reg", reg, 3);
        reg[2] = (val << 10) & 0xffffffff;
        setprop(nvrtc, "reg", reg, 3);
    }
}

void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
           unsigned long r6, unsigned long r7)
{
    table = (char *)r3;
    planetcore_prepare_table(table);

    if (!planetcore_get_decimal(table, PLANETCORE_KEY_MB_RAM, &mem_size))
        return;

    mem_size *= 1024 * 1024;
    simple_alloc_init(_end, mem_size - (unsigned long)_end, 32, 64);

    fdt_init(_dtb_start);

    planetcore_set_stdout_path(table);

    serial_console_init();
    platform_ops.fixups = platform_fixups;
}