pc-bios/s390-ccw/s390-ccw.h

   1 /*
   2  * S390 CCW boot loader
   3  *
   4  * Copyright (c) 2013 Alexander Graf <agraf@suse.de>
   5  *
   6  * This work is licensed under the terms of the GNU GPL, version 2 or (at
   7  * your option) any later version. See the COPYING file in the top-level
   8  * directory.
   9  */
  10
  11 #ifndef S390_CCW_H
  12 #define S390_CCW_H
  13
  14 /* #define DEBUG */
  15
  16 typedef unsigned char      u8;
  17 typedef unsigned short     u16;
  18 typedef unsigned int       u32;
  19 typedef unsigned long long u64;
  20 typedef unsigned long      ulong;
  21 typedef long               size_t;
  22 typedef int                bool;
  23 typedef unsigned char      uint8_t;
  24 typedef unsigned short     uint16_t;
  25 typedef unsigned int       uint32_t;
  26 typedef unsigned long long uint64_t;
  27 typedef unsigned char      __u8;
  28 typedef unsigned short     __u16;
  29 typedef unsigned int       __u32;
  30 typedef unsigned long long __u64;
  31
  32 #define true 1
  33 #define false 0
  34 #define PAGE_SIZE 4096
  35
  36 #ifndef EIO
  37 #define EIO     1
  38 #endif
  39 #ifndef EBUSY
  40 #define EBUSY   2
  41 #endif
  42 #ifndef NULL
  43 #define NULL    0
  44 #endif
  45
  46 #include "cio.h"
  47
  48 /* start.s */
  49 void disabled_wait(void);
  50
  51 /* main.c */
  52 void virtio_panic(const char *string);
  53 void write_subsystem_identification(void);
  54
  55 /* sclp-ascii.c */
  56 void sclp_print(const char *string);
  57 void sclp_setup(void);
  58
  59 /* virtio.c */
  60 unsigned long virtio_load_direct(ulong rec_list1, ulong rec_list2,
  61                                  ulong subchan_id, void *load_addr);
  62 bool virtio_is_blk(struct subchannel_id schid);
  63 void virtio_setup_block(struct subchannel_id schid);
  64 int virtio_read(ulong sector, void *load_addr);
  65 int enable_mss_facility(void);
  66
  67 /* bootmap.c */
  68 void zipl_load(void);
  69
  70 static inline void *memset(void *s, int c, size_t n)
  71 {
  72     int i;
  73     unsigned char *p = s;
  74
  75     for (i = 0; i < n; i++) {
  76         p[i] = c;
  77     }
  78
  79     return s;
  80 }
  81
  82 static inline void fill_hex(char *out, unsigned char val)
  83 {
  84     const char hex[] = "0123456789abcdef";
  85
  86     out[0] = hex[(val >> 4) & 0xf];
  87     out[1] = hex[val & 0xf];
  88 }
  89
  90 static inline void fill_hex_val(char *out, void *ptr, unsigned size)
  91 {
  92     unsigned char *value = ptr;
  93     unsigned int i;
  94
  95     for (i = 0; i < size; i++) {
  96         fill_hex(&out[i*2], value[i]);
  97     }
  98 }
  99
 100 static inline void print_int(const char *desc, u64 addr)
 101 {
 102     char out[] = ": 0xffffffffffffffff\n";
 103
 104     fill_hex_val(&out[4], &addr, sizeof(addr));
 105
 106     sclp_print(desc);
 107     sclp_print(out);
 108 }
 109
 110 static inline void debug_print_int(const char *desc, u64 addr)
 111 {
 112 #ifdef DEBUG
 113     print_int(desc, addr);
 114 #endif
 115 }
 116
 117 static inline void debug_print_addr(const char *desc, void *p)
 118 {
 119 #ifdef DEBUG
 120     debug_print_int(desc, (unsigned int)(unsigned long)p);
 121 #endif
 122 }
 123
 124 /***********************************************
 125  *           Hypercall functions               *
 126  ***********************************************/
 127
 128 #define KVM_S390_VIRTIO_NOTIFY          0
 129 #define KVM_S390_VIRTIO_RESET           1
 130 #define KVM_S390_VIRTIO_SET_STATUS      2
 131 #define KVM_S390_VIRTIO_CCW_NOTIFY      3
 132
 133 static inline void yield(void)
 134 {
 135     asm volatile ("diag 0,0,0x44"
 136                   : :
 137                   : "memory", "cc");
 138 }
 139
 140 #define MAX_SECTOR_SIZE 4096
 141
 142 #endif /* S390_CCW_H */