arch/sh64/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
  21 #include <linux/stddef.h>
  22 #include <linux/init.h>
  23 #include <linux/config.h>
  24 #include <linux/mm.h>
  25 #include <linux/bootmem.h>
  26 #include <linux/delay.h>
  27 #include <linux/kernel.h>
  28 #include <asm/processor.h>
  29 #include <asm/platform.h>
  30 #include <asm/io.h>
  31 #include <asm/irq.h>
  32 #include <asm/page.h>
  33
  34 #define RES_COUNT(res) ((sizeof((res))/sizeof(struct resource)))
  35
  36 /*
  37  * Platform Dependent Interrupt Priorities.
  38  */
  39
  40 /* Using defaults defined in irq.h */
  41 #define RES NO_PRIORITY         /* Disabled */
  42 #define IR0 IRL0_PRIORITY       /* IRLs */
  43 #define IR1 IRL1_PRIORITY
  44 #define IR2 IRL2_PRIORITY
  45 #define IR3 IRL3_PRIORITY
  46 #define PCA INTA_PRIORITY       /* PCI Ints */
  47 #define PCB INTB_PRIORITY
  48 #define PCC INTC_PRIORITY
  49 #define PCD INTD_PRIORITY
  50 #define SER TOP_PRIORITY
  51 #define ERR TOP_PRIORITY
  52 #define PW0 TOP_PRIORITY
  53 #define PW1 TOP_PRIORITY
  54 #define PW2 TOP_PRIORITY
  55 #define PW3 TOP_PRIORITY
  56 #define DM0 NO_PRIORITY         /* DMA Ints */
  57 #define DM1 NO_PRIORITY
  58 #define DM2 NO_PRIORITY
  59 #define DM3 NO_PRIORITY
  60 #define DAE NO_PRIORITY
  61 #define TU0 TIMER_PRIORITY      /* TMU Ints */
  62 #define TU1 NO_PRIORITY
  63 #define TU2 NO_PRIORITY
  64 #define TI2 NO_PRIORITY
  65 #define ATI NO_PRIORITY         /* RTC Ints */
  66 #define PRI NO_PRIORITY
  67 #define CUI RTC_PRIORITY
  68 #define ERI SCIF_PRIORITY       /* SCIF Ints */
  69 #define RXI SCIF_PRIORITY
  70 #define BRI SCIF_PRIORITY
  71 #define TXI SCIF_PRIORITY
  72 #define ITI TOP_PRIORITY        /* WDT Ints */
  73
  74 /*
  75  * Platform dependent structures: maps and parms block.
  76  */
  77 struct resource io_resources[] = {
  78         /* To be updated with external devices */
  79 };
  80
  81 struct resource kram_resources[] = {
  82         { "Kernel code", 0, 0 },        /* These must be last in the array */
  83         { "Kernel data", 0, 0 }         /* These must be last in the array */
  84 };
  85
  86 struct resource xram_resources[] = {
  87         /* To be updated with external devices */
  88 };
  89
  90 struct resource rom_resources[] = {
  91         /* To be updated with external devices */
  92 };
  93
  94 struct sh64_platform platform_parms = {
  95         .readonly_rootfs =      1,
  96         .initial_root_dev =     0x0100,
  97         .loader_type =          1,
  98         .io_res_p =             io_resources,
  99         .io_res_count =         RES_COUNT(io_resources),
 100         .kram_res_p =           kram_resources,
 101         .kram_res_count =       RES_COUNT(kram_resources),
 102         .xram_res_p =           xram_resources,
 103         .xram_res_count =       RES_COUNT(xram_resources),
 104         .rom_res_p =            rom_resources,
 105         .rom_res_count =        RES_COUNT(rom_resources),
 106 };
 107
 108 int platform_int_priority[NR_INTC_IRQS] = {
 109         IR0, IR1, IR2, IR3, PCA, PCB, PCC, PCD, /* IRQ  0- 7 */
 110         RES, RES, RES, RES, SER, ERR, PW3, PW2, /* IRQ  8-15 */
 111         PW1, PW0, DM0, DM1, DM2, DM3, DAE, RES, /* IRQ 16-23 */
 112         RES, RES, RES, RES, RES, RES, RES, RES, /* IRQ 24-31 */
 113         TU0, TU1, TU2, TI2, ATI, PRI, CUI, ERI, /* IRQ 32-39 */
 114         RXI, BRI, TXI, RES, RES, RES, RES, RES, /* IRQ 40-47 */
 115         RES, RES, RES, RES, RES, RES, RES, RES, /* IRQ 48-55 */
 116         RES, RES, RES, RES, RES, RES, RES, ITI, /* IRQ 56-63 */
 117 };
 118
 119 void __init platform_setup(void)
 120 {
 121         /* Harp platform leaves the decision to head.S, for now */
 122         platform_parms.fpu_flags = fpu_in_use;
 123 }
 124
 125 void __init platform_monitor(void)
 126 {
 127         /* Nothing yet .. */
 128 }
 129
 130 void __init platform_reserve(void)
 131 {
 132         /* Nothing yet .. */
 133 }
 134
 135 const char *get_system_type(void)
 136 {
 137         return "ST50 Harp";
 138 }
 139