LXR linux/arch/powerpc/boot/ep405.c

   1/*
   2 * Embedded Planet EP405 with PlanetCore firmware
   3 *
   4 * (c) Benjamin Herrenschmidt <benh@kernel.crashing.org>, IBM Corp,\
   5 *
   6 * Based on ep88xc.c by
   7 *
   8 * Scott Wood <scottwood@freescale.com>
   9 *
  10 * Copyright (c) 2007 Freescale Semiconductor, Inc.
  11 *
  12 * This program is free software; you can redistribute it and/or modify it
  13 * under the terms of the GNU General Public License version 2 as published
  14 * by the Free Software Foundation.
  15 */
  16
  17#include "ops.h"
  18#include "stdio.h"
  19#include "planetcore.h"
  20#include "dcr.h"
  21#include "4xx.h"
  22#include "io.h"
  23
  24static char *table;
  25static u64 mem_size;
  26
  27static void platform_fixups(void)
  28{
  29        u64 val;
  30        void *nvrtc;
  31
  32        dt_fixup_memory(0, mem_size);
  33        planetcore_set_mac_addrs(table);
  34
  35        if (!planetcore_get_decimal(table, PLANETCORE_KEY_CRYSTAL_HZ, &val)) {
  36                printf("No PlanetCore crystal frequency key.\r\n");
  37                return;
  38        }
  39        ibm405gp_fixup_clocks(val, 0xa8c000);
  40        ibm4xx_quiesce_eth((u32 *)0xef600800, NULL);
  41        ibm4xx_fixup_ebc_ranges("/plb/ebc");
  42
  43        if (!planetcore_get_decimal(table, PLANETCORE_KEY_KB_NVRAM, &val)) {
  44                printf("No PlanetCore NVRAM size key.\r\n");
  45                return;
  46        }
  47        nvrtc = finddevice("/plb/ebc/nvrtc@4,200000");
  48        if (nvrtc != NULL) {
  49                u32 reg[3] = { 4, 0x200000, 0};
  50                getprop(nvrtc, "reg", reg, 3);
  51                reg[2] = (val << 10) & 0xffffffff;
  52                setprop(nvrtc, "reg", reg, 3);
  53        }
  54}
  55
  56void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
  57                   unsigned long r6, unsigned long r7)
  58{
  59        table = (char *)r3;
  60        planetcore_prepare_table(table);
  61
  62        if (!planetcore_get_decimal(table, PLANETCORE_KEY_MB_RAM, &mem_size))
  63                return;
  64
  65        mem_size *= 1024 * 1024;
  66        simple_alloc_init(_end, mem_size - (unsigned long)_end, 32, 64);
  67
  68        fdt_init(_dtb_start);
  69
  70        planetcore_set_stdout_path(table);
  71
  72        serial_console_init();
  73        platform_ops.fixups = platform_fixups;
  74}
  75