1 /*
2 * Copyright 2012 (C), Jason Cooper <jason@lakedaemon.net>
3 *
4 * arch/arm/mach-kirkwood/board-dt.c
5 *
6 * Flattened Device Tree board initialization
7 *
8 * This file is licensed under the terms of the GNU General Public
9 * License version 2. This program is licensed "as is" without any
10 * warranty of any kind, whether express or implied.
11 */
12
13 #include <linux/kernel.h>
14 #include <linux/init.h>
15 #include <linux/of.h>
16 #include <linux/of_platform.h>
17 #include <linux/kexec.h>
18 #include <asm/mach/arch.h>
19 #include <asm/mach/map.h>
20 #include <mach/bridge-regs.h>
21 #include "common.h"
22
23 static struct of_device_id kirkwood_dt_match_table[] __initdata = {
24 { .compatible = "simple-bus", },
25 { }
26 };
27
kirkwood_dt_init(void)28 static void __init kirkwood_dt_init(void)
29 {
30 pr_info("Kirkwood: %s, TCLK=%d.\n", kirkwood_id(), kirkwood_tclk);
31
32 /*
33 * Disable propagation of mbus errors to the CPU local bus,
34 * as this causes mbus errors (which can occur for example
35 * for PCI aborts) to throw CPU aborts, which we're not set
36 * up to deal with.
37 */
38 writel(readl(CPU_CONFIG) & ~CPU_CONFIG_ERROR_PROP, CPU_CONFIG);
39
40 kirkwood_setup_cpu_mbus();
41
42 #ifdef CONFIG_CACHE_FEROCEON_L2
43 kirkwood_l2_init();
44 #endif
45
46 /* internal devices that every board has */
47 kirkwood_wdt_init();
48 kirkwood_xor0_init();
49 kirkwood_xor1_init();
50 kirkwood_crypto_init();
51
52 #ifdef CONFIG_KEXEC
53 kexec_reinit = kirkwood_enable_pcie;
54 #endif
55
56 if (of_machine_is_compatible("globalscale,dreamplug"))
57 dreamplug_init();
58
59 of_platform_populate(NULL, kirkwood_dt_match_table, NULL, NULL);
60 }
61
62 static const char *kirkwood_dt_board_compat[] = {
63 "globalscale,dreamplug",
64 NULL
65 };
66
67 DT_MACHINE_START(KIRKWOOD_DT, "Marvell Kirkwood (Flattened Device Tree)")
68 /* Maintainer: Jason Cooper <jason@lakedaemon.net> */
69 .map_io = kirkwood_map_io,
70 .init_early = kirkwood_init_early,
71 .init_irq = kirkwood_init_irq,
72 .timer = &kirkwood_timer,
73 .init_machine = kirkwood_dt_init,
74 .restart = kirkwood_restart,
75 .dt_compat = kirkwood_dt_board_compat,
76 MACHINE_END
77