• Home
  • History
  • Annotate
  • only in this directory
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