1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License.  See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * arch/sh64/mach-romram/setup.c
7 *
8 * SH-5 ROM/RAM Platform Support
9 *
10 * This file handles the architecture-dependent parts of initialization
11 *
12 * Copyright (C) 2000, 2001  Paolo Alberelli
13 *
14 * benedict.gaster@superh.com:	 3rd May 2002
15 *    Added support for ramdisk, removing statically linked romfs at the same time. *
16 *
17 * lethal@linux-sh.org:          15th May 2003
18 *    Use the generic procfs cpuinfo interface, just return a valid board name.
19 *
20 * Sean.McGoogan@superh.com	17th Feb 2004
21 * 	copied from arch/sh64/mach-harp/setup.c
22 */
23
24#include <linux/stddef.h>
25#include <linux/init.h>
26#include <linux/mm.h>
27#include <linux/bootmem.h>
28#include <linux/delay.h>
29#include <linux/kernel.h>
30#include <asm/processor.h>
31#include <asm/platform.h>
32#include <asm/io.h>
33#include <asm/irq.h>
34#include <asm/page.h>
35
36#define RES_COUNT(res) ((sizeof((res))/sizeof(struct resource)))
37
38/*
39 * Platform Dependent Interrupt Priorities.
40 */
41
42/* Using defaults defined in irq.h */
43#define	RES NO_PRIORITY		/* Disabled */
44#define IR0 IRL0_PRIORITY	/* IRLs */
45#define IR1 IRL1_PRIORITY
46#define IR2 IRL2_PRIORITY
47#define IR3 IRL3_PRIORITY
48#define PCA INTA_PRIORITY	/* PCI Ints */
49#define PCB INTB_PRIORITY
50#define PCC INTC_PRIORITY
51#define PCD INTD_PRIORITY
52#define SER TOP_PRIORITY
53#define ERR TOP_PRIORITY
54#define PW0 TOP_PRIORITY
55#define PW1 TOP_PRIORITY
56#define PW2 TOP_PRIORITY
57#define PW3 TOP_PRIORITY
58#define DM0 NO_PRIORITY		/* DMA Ints */
59#define DM1 NO_PRIORITY
60#define DM2 NO_PRIORITY
61#define DM3 NO_PRIORITY
62#define DAE NO_PRIORITY
63#define TU0 TIMER_PRIORITY	/* TMU Ints */
64#define TU1 NO_PRIORITY
65#define TU2 NO_PRIORITY
66#define TI2 NO_PRIORITY
67#define ATI NO_PRIORITY		/* RTC Ints */
68#define PRI NO_PRIORITY
69#define CUI RTC_PRIORITY
70#define ERI SCIF_PRIORITY	/* SCIF Ints */
71#define RXI SCIF_PRIORITY
72#define BRI SCIF_PRIORITY
73#define TXI SCIF_PRIORITY
74#define ITI TOP_PRIORITY	/* WDT Ints */
75
76/*
77 * Platform dependent structures: maps and parms block.
78 */
79struct resource io_resources[] = {
80	/* To be updated with external devices */
81};
82
83struct resource kram_resources[] = {
84	{ "Kernel code", 0, 0 },	/* These must be last in the array */
85	{ "Kernel data", 0, 0 }		/* These must be last in the array */
86};
87
88struct resource xram_resources[] = {
89	/* To be updated with external devices */
90};
91
92struct resource rom_resources[] = {
93	/* To be updated with external devices */
94};
95
96struct sh64_platform platform_parms = {
97	.readonly_rootfs =	1,
98	.initial_root_dev =	0x0100,
99	.loader_type =		1,
100	.io_res_p =		io_resources,
101	.io_res_count =		RES_COUNT(io_resources),
102	.kram_res_p =		kram_resources,
103	.kram_res_count =	RES_COUNT(kram_resources),
104	.xram_res_p =		xram_resources,
105	.xram_res_count =	RES_COUNT(xram_resources),
106	.rom_res_p =		rom_resources,
107	.rom_res_count =	RES_COUNT(rom_resources),
108};
109
110int platform_int_priority[NR_INTC_IRQS] = {
111	IR0, IR1, IR2, IR3, PCA, PCB, PCC, PCD,	/* IRQ  0- 7 */
112	RES, RES, RES, RES, SER, ERR, PW3, PW2,	/* IRQ  8-15 */
113	PW1, PW0, DM0, DM1, DM2, DM3, DAE, RES,	/* IRQ 16-23 */
114	RES, RES, RES, RES, RES, RES, RES, RES,	/* IRQ 24-31 */
115	TU0, TU1, TU2, TI2, ATI, PRI, CUI, ERI,	/* IRQ 32-39 */
116	RXI, BRI, TXI, RES, RES, RES, RES, RES,	/* IRQ 40-47 */
117	RES, RES, RES, RES, RES, RES, RES, RES,	/* IRQ 48-55 */
118	RES, RES, RES, RES, RES, RES, RES, ITI,	/* IRQ 56-63 */
119};
120
121void __init platform_setup(void)
122{
123	/* ROM/RAM platform leaves the decision to head.S, for now */
124	platform_parms.fpu_flags = fpu_in_use;
125}
126
127void __init platform_monitor(void)
128{
129	/* Nothing yet .. */
130}
131
132void __init platform_reserve(void)
133{
134	/* Nothing yet .. */
135}
136
137const char *get_system_type(void)
138{
139	return "ROM/RAM";
140}
141