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
6 * arch/sh64/mach-cayman/setup.c
10 * This file handles the architecture-dependent parts of initialization
12 * Copyright David J. Mckay.
15 * benedict.gaster@superh.com: 3rd May 2002
16 * Added support for ramdisk, removing statically linked romfs at the same time.
18 * lethal@linux-sh.org: 15th May 2003
19 * Use the generic procfs cpuinfo interface, just return a valid board name.
22 #include <linux/stddef.h>
23 #include <linux/init.h>
25 #include <linux/bootmem.h>
26 #include <linux/delay.h>
27 #include <linux/kernel.h>
28 #include <linux/seq_file.h>
29 #include <asm/processor.h>
30 #include <asm/platform.h>
36 * Platform Dependent Interrupt Priorities.
39 /* Using defaults defined in irq.h */
40 #define RES NO_PRIORITY /* Disabled */
41 #define IR0 IRL0_PRIORITY /* IRLs */
42 #define IR1 IRL1_PRIORITY
43 #define IR2 IRL2_PRIORITY
44 #define IR3 IRL3_PRIORITY
45 #define PCA INTA_PRIORITY /* PCI Ints */
46 #define PCB INTB_PRIORITY
47 #define PCC INTC_PRIORITY
48 #define PCD INTD_PRIORITY
49 #define SER TOP_PRIORITY
50 #define ERR TOP_PRIORITY
51 #define PW0 TOP_PRIORITY
52 #define PW1 TOP_PRIORITY
53 #define PW2 TOP_PRIORITY
54 #define PW3 TOP_PRIORITY
55 #define DM0 NO_PRIORITY /* DMA Ints */
56 #define DM1 NO_PRIORITY
57 #define DM2 NO_PRIORITY
58 #define DM3 NO_PRIORITY
59 #define DAE NO_PRIORITY
60 #define TU0 TIMER_PRIORITY /* TMU Ints */
61 #define TU1 NO_PRIORITY
62 #define TU2 NO_PRIORITY
63 #define TI2 NO_PRIORITY
64 #define ATI NO_PRIORITY /* RTC Ints */
65 #define PRI NO_PRIORITY
66 #define CUI RTC_PRIORITY
67 #define ERI SCIF_PRIORITY /* SCIF Ints */
68 #define RXI SCIF_PRIORITY
69 #define BRI SCIF_PRIORITY
70 #define TXI SCIF_PRIORITY
71 #define ITI TOP_PRIORITY /* WDT Ints */
73 /* Setup for the SMSC FDC37C935 */
74 #define SMSC_SUPERIO_BASE 0x04000000
75 #define SMSC_CONFIG_PORT_ADDR 0x3f0
76 #define SMSC_INDEX_PORT_ADDR SMSC_CONFIG_PORT_ADDR
77 #define SMSC_DATA_PORT_ADDR 0x3f1
79 #define SMSC_ENTER_CONFIG_KEY 0x55
80 #define SMSC_EXIT_CONFIG_KEY 0xaa
82 #define SMCS_LOGICAL_DEV_INDEX 0x07
83 #define SMSC_DEVICE_ID_INDEX 0x20
84 #define SMSC_DEVICE_REV_INDEX 0x21
85 #define SMSC_ACTIVATE_INDEX 0x30
86 #define SMSC_PRIMARY_BASE_INDEX 0x60
87 #define SMSC_SECONDARY_BASE_INDEX 0x62
88 #define SMSC_PRIMARY_INT_INDEX 0x70
89 #define SMSC_SECONDARY_INT_INDEX 0x72
91 #define SMSC_IDE1_DEVICE 1
92 #define SMSC_KEYBOARD_DEVICE 7
93 #define SMSC_CONFIG_REGISTERS 8
95 #define SMSC_SUPERIO_READ_INDEXED(index) ({ \
96 outb((index), SMSC_INDEX_PORT_ADDR); \
97 inb(SMSC_DATA_PORT_ADDR); })
98 #define SMSC_SUPERIO_WRITE_INDEXED(val, index) ({ \
99 outb((index), SMSC_INDEX_PORT_ADDR); \
100 outb((val), SMSC_DATA_PORT_ADDR); })
102 #define IDE1_PRIMARY_BASE 0x01f0
103 #define IDE1_SECONDARY_BASE 0x03f6
105 unsigned long smsc_superio_virt;
108 * Platform dependent structures: maps and parms block.
110 struct resource io_resources[] = {
111 /* To be updated with external devices */
114 struct resource kram_resources[] = {
115 /* These must be last in the array */
116 { .name = "Kernel code", .start = 0, .end = 0 },
117 /* These must be last in the array */
118 { .name = "Kernel data", .start = 0, .end = 0 }
121 struct resource xram_resources[] = {
122 /* To be updated with external devices */
125 struct resource rom_resources[] = {
126 /* To be updated with external devices */
129 struct sh64_platform platform_parms = {
130 .readonly_rootfs = 1,
131 .initial_root_dev = 0x0100,
133 .io_res_p = io_resources,
134 .io_res_count = ARRAY_SIZE(io_resources),
135 .kram_res_p = kram_resources,
136 .kram_res_count = ARRAY_SIZE(kram_resources),
137 .xram_res_p = xram_resources,
138 .xram_res_count = ARRAY_SIZE(xram_resources),
139 .rom_res_p = rom_resources,
140 .rom_res_count = ARRAY_SIZE(rom_resources),
143 int platform_int_priority[NR_INTC_IRQS] = {
144 IR0, IR1, IR2, IR3, PCA, PCB, PCC, PCD, /* IRQ 0- 7 */
145 RES, RES, RES, RES, SER, ERR, PW3, PW2, /* IRQ 8-15 */
146 PW1, PW0, DM0, DM1, DM2, DM3, DAE, RES, /* IRQ 16-23 */
147 RES, RES, RES, RES, RES, RES, RES, RES, /* IRQ 24-31 */
148 TU0, TU1, TU2, TI2, ATI, PRI, CUI, ERI, /* IRQ 32-39 */
149 RXI, BRI, TXI, RES, RES, RES, RES, RES, /* IRQ 40-47 */
150 RES, RES, RES, RES, RES, RES, RES, RES, /* IRQ 48-55 */
151 RES, RES, RES, RES, RES, RES, RES, ITI, /* IRQ 56-63 */
154 static int __init smsc_superio_setup(void)
156 unsigned char devid, devrev;
158 smsc_superio_virt = onchip_remap(SMSC_SUPERIO_BASE, 1024, "SMSC SuperIO");
159 if (!smsc_superio_virt) {
160 panic("Unable to remap SMSC SuperIO\n");
163 /* Initially the chip is in run state */
164 /* Put it into configuration state */
165 outb(SMSC_ENTER_CONFIG_KEY, SMSC_CONFIG_PORT_ADDR);
166 outb(SMSC_ENTER_CONFIG_KEY, SMSC_CONFIG_PORT_ADDR);
168 /* Read device ID info */
169 devid = SMSC_SUPERIO_READ_INDEXED(SMSC_DEVICE_ID_INDEX);
170 devrev = SMSC_SUPERIO_READ_INDEXED(SMSC_DEVICE_REV_INDEX);
171 printk("SMSC SuperIO devid %02x rev %02x\n", devid, devrev);
173 /* Select the keyboard device */
174 SMSC_SUPERIO_WRITE_INDEXED(SMSC_KEYBOARD_DEVICE, SMCS_LOGICAL_DEV_INDEX);
177 SMSC_SUPERIO_WRITE_INDEXED(1, SMSC_ACTIVATE_INDEX);
179 /* Select the interrupts */
180 /* On a PC keyboard is IRQ1, mouse is IRQ12 */
181 SMSC_SUPERIO_WRITE_INDEXED(1, SMSC_PRIMARY_INT_INDEX);
182 SMSC_SUPERIO_WRITE_INDEXED(12, SMSC_SECONDARY_INT_INDEX);
186 * Only IDE1 exists on the Cayman
190 SMSC_SUPERIO_WRITE_INDEXED(1 << SMSC_IDE1_DEVICE, 0x22);
192 SMSC_SUPERIO_WRITE_INDEXED(SMSC_IDE1_DEVICE, SMCS_LOGICAL_DEV_INDEX);
193 SMSC_SUPERIO_WRITE_INDEXED(1, SMSC_ACTIVATE_INDEX);
195 SMSC_SUPERIO_WRITE_INDEXED(IDE1_PRIMARY_BASE >> 8,
196 SMSC_PRIMARY_BASE_INDEX + 0);
197 SMSC_SUPERIO_WRITE_INDEXED(IDE1_PRIMARY_BASE & 0xff,
198 SMSC_PRIMARY_BASE_INDEX + 1);
200 SMSC_SUPERIO_WRITE_INDEXED(IDE1_SECONDARY_BASE >> 8,
201 SMSC_SECONDARY_BASE_INDEX + 0);
202 SMSC_SUPERIO_WRITE_INDEXED(IDE1_SECONDARY_BASE & 0xff,
203 SMSC_SECONDARY_BASE_INDEX + 1);
205 SMSC_SUPERIO_WRITE_INDEXED(14, SMSC_PRIMARY_INT_INDEX);
207 SMSC_SUPERIO_WRITE_INDEXED(SMSC_CONFIG_REGISTERS,
208 SMCS_LOGICAL_DEV_INDEX);
210 SMSC_SUPERIO_WRITE_INDEXED(0x00, 0xc2); /* GP42 = nIDE1_OE */
211 SMSC_SUPERIO_WRITE_INDEXED(0x01, 0xc5); /* GP45 = IDE1_IRQ */
212 SMSC_SUPERIO_WRITE_INDEXED(0x00, 0xc6); /* GP46 = nIOROP */
213 SMSC_SUPERIO_WRITE_INDEXED(0x00, 0xc7); /* GP47 = nIOWOP */
216 /* Exit the configuraton state */
217 outb(SMSC_EXIT_CONFIG_KEY, SMSC_CONFIG_PORT_ADDR);
222 /* This is grotty, but, because kernel is always referenced on the link line
223 * before any devices, this is safe.
225 __initcall(smsc_superio_setup);
227 void __init platform_setup(void)
229 /* Cayman platform leaves the decision to head.S, for now */
230 platform_parms.fpu_flags = fpu_in_use;
233 void __init platform_monitor(void)
238 void __init platform_reserve(void)
243 const char *get_system_type(void)
245 return "Hitachi Cayman";