arch/sh/mach-harp/setup.c

   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-harp/setup.c
   7  *
   8  * SH-5 Simulator 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 #include <linux/init.h>
  21 #include <linux/kernel.h>
  22 #include <asm/platform.h>
  23 #include <asm/irq.h>
  24
  25 /*
  26  * Platform Dependent Interrupt Priorities.
  27  */
  28
  29 /* Using defaults defined in irq.h */
  30 #define RES NO_PRIORITY         /* Disabled */
  31 #define IR0 IRL0_PRIORITY       /* IRLs */
  32 #define IR1 IRL1_PRIORITY
  33 #define IR2 IRL2_PRIORITY
  34 #define IR3 IRL3_PRIORITY
  35 #define PCA INTA_PRIORITY       /* PCI Ints */
  36 #define PCB INTB_PRIORITY
  37 #define PCC INTC_PRIORITY
  38 #define PCD INTD_PRIORITY
  39 #define SER TOP_PRIORITY
  40 #define ERR TOP_PRIORITY
  41 #define PW0 TOP_PRIORITY
  42 #define PW1 TOP_PRIORITY
  43 #define PW2 TOP_PRIORITY
  44 #define PW3 TOP_PRIORITY
  45 #define DM0 NO_PRIORITY         /* DMA Ints */
  46 #define DM1 NO_PRIORITY
  47 #define DM2 NO_PRIORITY
  48 #define DM3 NO_PRIORITY
  49 #define DAE NO_PRIORITY
  50 #define TU0 TIMER_PRIORITY      /* TMU Ints */
  51 #define TU1 NO_PRIORITY
  52 #define TU2 NO_PRIORITY
  53 #define TI2 NO_PRIORITY
  54 #define ATI NO_PRIORITY         /* RTC Ints */
  55 #define PRI NO_PRIORITY
  56 #define CUI RTC_PRIORITY
  57 #define ERI SCIF_PRIORITY       /* SCIF Ints */
  58 #define RXI SCIF_PRIORITY
  59 #define BRI SCIF_PRIORITY
  60 #define TXI SCIF_PRIORITY
  61 #define ITI TOP_PRIORITY        /* WDT Ints */
  62
  63 /*
  64  * Platform dependent structures: maps and parms block.
  65  */
  66 struct resource io_resources[] = {
  67         /* To be updated with external devices */
  68 };
  69
  70 struct resource kram_resources[] = {
  71         /* These must be last in the array */
  72         { .name = "Kernel code", .start = 0, .end = 0 },
  73         /* These must be last in the array */
  74         { .name = "Kernel data", .start = 0, .end = 0 }
  75 };
  76
  77 struct resource xram_resources[] = {
  78         /* To be updated with external devices */
  79 };
  80
  81 struct resource rom_resources[] = {
  82         /* To be updated with external devices */
  83 };
  84
  85 struct sh64_platform platform_parms = {
  86         .readonly_rootfs =      1,
  87         .initial_root_dev =     0x0100,
  88         .loader_type =          1,
  89         .io_res_p =             io_resources,
  90         .io_res_count =         ARRAY_SIZE(io_resources),
  91         .kram_res_p =           kram_resources,
  92         .kram_res_count =       ARRAY_SIZE(kram_resources),
  93         .xram_res_p =           xram_resources,
  94         .xram_res_count =       ARRAY_SIZE(xram_resources),
  95         .rom_res_p =            rom_resources,
  96         .rom_res_count =        ARRAY_SIZE(rom_resources),
  97 };
  98
  99 int platform_int_priority[NR_INTC_IRQS] = {
 100         IR0, IR1, IR2, IR3, PCA, PCB, PCC, PCD, /* IRQ  0- 7 */
 101         RES, RES, RES, RES, SER, ERR, PW3, PW2, /* IRQ  8-15 */
 102         PW1, PW0, DM0, DM1, DM2, DM3, DAE, RES, /* IRQ 16-23 */
 103         RES, RES, RES, RES, RES, RES, RES, RES, /* IRQ 24-31 */
 104         TU0, TU1, TU2, TI2, ATI, PRI, CUI, ERI, /* IRQ 32-39 */
 105         RXI, BRI, TXI, RES, RES, RES, RES, RES, /* IRQ 40-47 */
 106         RES, RES, RES, RES, RES, RES, RES, RES, /* IRQ 48-55 */
 107         RES, RES, RES, RES, RES, RES, RES, ITI, /* IRQ 56-63 */
 108 };
 109
 110 void __init platform_setup(void)
 111 {
 112         /* Harp platform leaves the decision to head.S, for now */
 113         platform_parms.fpu_flags = fpu_in_use;
 114 }
 115
 116 void __init platform_monitor(void)
 117 {
 118         /* Nothing yet .. */
 119 }
 120
 121 void __init platform_reserve(void)
 122 {
 123         /* Nothing yet .. */
 124 }
 125
 126 const char *get_system_type(void)
 127 {
 128         return "ST50 Harp";
 129 }