xref: /linux/arch/powerpc/boot/ep8248e.c (revision 0d456bad36d42d16022be045c8a53ddbb59ee478)
1 /*
2  * Embedded Planet EP8248E with PlanetCore firmware
3  *
4  * Author: Scott Wood <scottwood@freescale.com>
5  *
6  * Copyright (c) 2007 Freescale Semiconductor, Inc.
7  *
8  * This program is free software; you can redistribute it and/or modify it
9  * under the terms of the GNU General Public License version 2 as published
10  * by the Free Software Foundation.
11  */
12 
13 #include "ops.h"
14 #include "stdio.h"
15 #include "planetcore.h"
16 #include "pq2.h"
17 
18 static char *table;
19 static u64 mem_size;
20 
21 #include <io.h>
22 
23 static void platform_fixups(void)
24 {
25 	u64 val;
26 
27 	dt_fixup_memory(0, mem_size);
28 	planetcore_set_mac_addrs(table);
29 
30 	if (!planetcore_get_decimal(table, PLANETCORE_KEY_CRYSTAL_HZ, &val)) {
31 		printf("No PlanetCore crystal frequency key.\r\n");
32 		return;
33 	}
34 
35 	pq2_fixup_clocks(val);
36 }
37 
38 void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
39                    unsigned long r6, unsigned long r7)
40 {
41 	table = (char *)r3;
42 	planetcore_prepare_table(table);
43 
44 	if (!planetcore_get_decimal(table, PLANETCORE_KEY_MB_RAM, &mem_size))
45 		return;
46 
47 	mem_size *= 1024 * 1024;
48 	simple_alloc_init(_end, mem_size - (unsigned long)_end, 32, 64);
49 
50 	fdt_init(_dtb_start);
51 
52 	planetcore_set_stdout_path(table);
53 	serial_console_init();
54 	platform_ops.fixups = platform_fixups;
55 }
56