1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * Embedded Planet EP405 with PlanetCore firmware
 4 *
 5 * (c) Benjamin Herrenschmidt <benh@kernel.crashing.org>, IBM Corp,\
 6 *
 7 * Based on ep88xc.c by
 8 *
 9 * Scott Wood <scottwood@freescale.com>
10 *
11 * Copyright (c) 2007 Freescale Semiconductor, Inc.
12 */
13
14#include "ops.h"
15#include "stdio.h"
16#include "planetcore.h"
17#include "dcr.h"
18#include "4xx.h"
19#include "io.h"
20
21static char *table;
22static u64 mem_size;
23
24static void platform_fixups(void)
25{
26	u64 val;
27	void *nvrtc;
28
29	dt_fixup_memory(0, mem_size);
30	planetcore_set_mac_addrs(table);
31
32	if (!planetcore_get_decimal(table, PLANETCORE_KEY_CRYSTAL_HZ, &val)) {
33		printf("No PlanetCore crystal frequency key.\r\n");
34		return;
35	}
36	ibm405gp_fixup_clocks(val, 0xa8c000);
37	ibm4xx_quiesce_eth((u32 *)0xef600800, NULL);
38	ibm4xx_fixup_ebc_ranges("/plb/ebc");
39
40	if (!planetcore_get_decimal(table, PLANETCORE_KEY_KB_NVRAM, &val)) {
41		printf("No PlanetCore NVRAM size key.\r\n");
42		return;
43	}
44	nvrtc = finddevice("/plb/ebc/nvrtc@4,200000");
45	if (nvrtc != NULL) {
46		u32 reg[3] = { 4, 0x200000, 0};
47		getprop(nvrtc, "reg", reg, 3);
48		reg[2] = (val << 10) & 0xffffffff;
49		setprop(nvrtc, "reg", reg, 3);
50	}
51}
52
53void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
54		   unsigned long r6, unsigned long r7)
55{
56	table = (char *)r3;
57	planetcore_prepare_table(table);
58
59	if (!planetcore_get_decimal(table, PLANETCORE_KEY_MB_RAM, &mem_size))
60		return;
61
62	mem_size *= 1024 * 1024;
63	simple_alloc_init(_end, mem_size - (unsigned long)_end, 32, 64);
64
65	fdt_init(_dtb_start);
66
67	planetcore_set_stdout_path(table);
68
69	serial_console_init();
70	platform_ops.fixups = platform_fixups;
71}