1 /*
2 * init.c, Common initialization routines for NEC VR4100 series.
3 *
4 * Copyright (C) 2003-2009 Yoichi Yuasa <yuasa@linux-mips.org>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20 #include <linux/init.h>
21 #include <linux/ioport.h>
22 #include <linux/irq.h>
23 #include <linux/string.h>
24
25 #include <asm/bootinfo.h>
26 #include <asm/time.h>
27 #include <asm/vr41xx/irq.h>
28 #include <asm/vr41xx/vr41xx.h>
29
30 #define IO_MEM_RESOURCE_START 0UL
31 #define IO_MEM_RESOURCE_END 0x1fffffffUL
32
iomem_resource_init(void)33 static void __init iomem_resource_init(void)
34 {
35 iomem_resource.start = IO_MEM_RESOURCE_START;
36 iomem_resource.end = IO_MEM_RESOURCE_END;
37 }
38
plat_time_init(void)39 void __init plat_time_init(void)
40 {
41 unsigned long tclock;
42
43 vr41xx_calculate_clock_frequency();
44
45 tclock = vr41xx_get_tclock_frequency();
46 if (current_cpu_data.processor_id == PRID_VR4131_REV2_0 ||
47 current_cpu_data.processor_id == PRID_VR4131_REV2_1)
48 mips_hpt_frequency = tclock / 2;
49 else
50 mips_hpt_frequency = tclock / 4;
51 }
52
plat_mem_setup(void)53 void __init plat_mem_setup(void)
54 {
55 iomem_resource_init();
56
57 vr41xx_siu_setup();
58 }
59
prom_init(void)60 void __init prom_init(void)
61 {
62 int argc, i;
63 char **argv;
64
65 argc = fw_arg0;
66 argv = (char **)fw_arg1;
67
68 for (i = 1; i < argc; i++) {
69 strlcat(arcs_cmdline, argv[i], COMMAND_LINE_SIZE);
70 if (i < (argc - 1))
71 strlcat(arcs_cmdline, " ", COMMAND_LINE_SIZE);
72 }
73 }
74
prom_free_prom_memory(void)75 void __init prom_free_prom_memory(void)
76 {
77 }
78