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1da177e4 LT |
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-sim/setup.c | |
7 | * | |
8 | * ST50 Simulator Platform Support | |
9 | * | |
10 | * This file handles the architecture-dependent parts of initialization | |
11 | * | |
12 | * Copyright (C) 2000, 2001 Paolo Alberelli | |
13 | * | |
14 | * lethal@linux-sh.org: 15th May 2003 | |
15 | * Use the generic procfs cpuinfo interface, just return a valid board name. | |
16 | */ | |
17 | ||
18 | #include <linux/stddef.h> | |
19 | #include <linux/init.h> | |
1da177e4 LT |
20 | #include <linux/mm.h> |
21 | #include <linux/bootmem.h> | |
22 | #include <linux/delay.h> | |
23 | #include <linux/kernel.h> | |
24 | #include <asm/addrspace.h> | |
25 | #include <asm/processor.h> | |
26 | #include <asm/platform.h> | |
27 | #include <asm/io.h> | |
28 | #include <asm/irq.h> | |
29 | #include <asm/page.h> | |
30 | ||
31 | #ifdef CONFIG_BLK_DEV_INITRD | |
32 | #include "../rootfs/rootfs.h" | |
33 | #endif | |
34 | ||
35 | static __init void platform_monitor(void); | |
36 | static __init void platform_setup(void); | |
37 | static __init void platform_reserve(void); | |
38 | ||
39 | ||
40 | #define PHYS_MEMORY CONFIG_MEMORY_SIZE_IN_MB*1024*1024 | |
41 | ||
42 | #if (PHYS_MEMORY < P1SEG_FOOTPRINT_RAM) | |
43 | #error "Invalid kernel configuration. Physical memory below footprint requirements." | |
44 | #endif | |
45 | ||
46 | #define RAM_DISK_START CONFIG_MEMORY_START+P1SEG_INITRD_BLOCK /* Top of 4MB */ | |
47 | #ifdef PLATFORM_ROMFS_SIZE | |
48 | #define RAM_DISK_SIZE (PAGE_ALIGN(PLATFORM_ROMFS_SIZE)) /* Variable Top */ | |
49 | #if ((RAM_DISK_START + RAM_DISK_SIZE) > (CONFIG_MEMORY_START + PHYS_MEMORY)) | |
50 | #error "Invalid kernel configuration. ROM RootFS exceeding physical memory." | |
51 | #endif | |
52 | #else | |
53 | #define RAM_DISK_SIZE P1SEG_INITRD_BLOCK_SIZE /* Top of 4MB */ | |
54 | #endif | |
55 | ||
56 | #define RES_COUNT(res) ((sizeof((res))/sizeof(struct resource))) | |
57 | ||
58 | /* | |
59 | * Platform Dependent Interrupt Priorities. | |
60 | */ | |
61 | ||
62 | /* Using defaults defined in irq.h */ | |
63 | #define RES NO_PRIORITY /* Disabled */ | |
64 | #define IR0 IRL0_PRIORITY /* IRLs */ | |
65 | #define IR1 IRL1_PRIORITY | |
66 | #define IR2 IRL2_PRIORITY | |
67 | #define IR3 IRL3_PRIORITY | |
68 | #define PCA INTA_PRIORITY /* PCI Ints */ | |
69 | #define PCB INTB_PRIORITY | |
70 | #define PCC INTC_PRIORITY | |
71 | #define PCD INTD_PRIORITY | |
72 | #define SER TOP_PRIORITY | |
73 | #define ERR TOP_PRIORITY | |
74 | #define PW0 TOP_PRIORITY | |
75 | #define PW1 TOP_PRIORITY | |
76 | #define PW2 TOP_PRIORITY | |
77 | #define PW3 TOP_PRIORITY | |
78 | #define DM0 NO_PRIORITY /* DMA Ints */ | |
79 | #define DM1 NO_PRIORITY | |
80 | #define DM2 NO_PRIORITY | |
81 | #define DM3 NO_PRIORITY | |
82 | #define DAE NO_PRIORITY | |
83 | #define TU0 TIMER_PRIORITY /* TMU Ints */ | |
84 | #define TU1 NO_PRIORITY | |
85 | #define TU2 NO_PRIORITY | |
86 | #define TI2 NO_PRIORITY | |
87 | #define ATI NO_PRIORITY /* RTC Ints */ | |
88 | #define PRI NO_PRIORITY | |
89 | #define CUI RTC_PRIORITY | |
90 | #define ERI SCIF_PRIORITY /* SCIF Ints */ | |
91 | #define RXI SCIF_PRIORITY | |
92 | #define BRI SCIF_PRIORITY | |
93 | #define TXI SCIF_PRIORITY | |
94 | #define ITI TOP_PRIORITY /* WDT Ints */ | |
95 | ||
96 | /* | |
97 | * Platform dependent structures: maps and parms block. | |
98 | */ | |
99 | struct resource io_resources[] = { | |
100 | /* Nothing yet .. */ | |
101 | }; | |
102 | ||
103 | struct resource kram_resources[] = { | |
104 | { "Kernel code", 0, 0 }, /* These must be last in the array */ | |
105 | { "Kernel data", 0, 0 } /* These must be last in the array */ | |
106 | }; | |
107 | ||
108 | struct resource xram_resources[] = { | |
109 | /* Nothing yet .. */ | |
110 | }; | |
111 | ||
112 | struct resource rom_resources[] = { | |
113 | /* Nothing yet .. */ | |
114 | }; | |
115 | ||
116 | struct sh64_platform platform_parms = { | |
117 | .readonly_rootfs = 1, | |
118 | .initial_root_dev = 0x0100, | |
119 | .loader_type = 1, | |
120 | .initrd_start = RAM_DISK_START, | |
121 | .initrd_size = RAM_DISK_SIZE, | |
122 | .io_res_p = io_resources, | |
123 | .io_res_count = RES_COUNT(io_resources), | |
124 | .kram_res_p = kram_resources, | |
125 | .kram_res_count = RES_COUNT(kram_resources), | |
126 | .xram_res_p = xram_resources, | |
127 | .xram_res_count = RES_COUNT(xram_resources), | |
128 | .rom_res_p = rom_resources, | |
129 | .rom_res_count = RES_COUNT(rom_resources), | |
130 | }; | |
131 | ||
132 | int platform_int_priority[NR_IRQS] = { | |
133 | IR0, IR1, IR2, IR3, PCA, PCB, PCC, PCD, /* IRQ 0- 7 */ | |
134 | RES, RES, RES, RES, SER, ERR, PW3, PW2, /* IRQ 8-15 */ | |
135 | PW1, PW0, DM0, DM1, DM2, DM3, DAE, RES, /* IRQ 16-23 */ | |
136 | RES, RES, RES, RES, RES, RES, RES, RES, /* IRQ 24-31 */ | |
137 | TU0, TU1, TU2, TI2, ATI, PRI, CUI, ERI, /* IRQ 32-39 */ | |
138 | RXI, BRI, TXI, RES, RES, RES, RES, RES, /* IRQ 40-47 */ | |
139 | RES, RES, RES, RES, RES, RES, RES, RES, /* IRQ 48-55 */ | |
140 | RES, RES, RES, RES, RES, RES, RES, ITI, /* IRQ 56-63 */ | |
141 | }; | |
142 | ||
143 | void __init platform_setup(void) | |
144 | { | |
145 | /* Simulator platform leaves the decision to head.S */ | |
146 | platform_parms.fpu_flags = fpu_in_use; | |
147 | } | |
148 | ||
149 | void __init platform_monitor(void) | |
150 | { | |
151 | /* Nothing yet .. */ | |
152 | } | |
153 | ||
154 | void __init platform_reserve(void) | |
155 | { | |
156 | /* Nothing yet .. */ | |
157 | } | |
158 | ||
159 | const char *get_system_type(void) | |
160 | { | |
161 | return "SH-5 Simulator"; | |
162 | } | |
163 |