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
  54 /* sclp-ascii.c */
  55 void sclp_print(const char *string);
  56 void sclp_setup(void);
  57
  58 /* virtio.c */
  59 unsigned long virtio_load_direct(ulong rec_list1, ulong rec_list2,
  60                                  ulong subchan_id, void *load_addr);
  61 bool virtio_is_blk(struct subchannel_id schid);
  62 void virtio_setup_block(struct subchannel_id schid);
  63 int virtio_read(ulong sector, void *load_addr);
  64
  65 /* bootmap.c */
  66 int zipl_load(void);
  67
  68 static inline void *memset(void *s, int c, size_t n)
  69 {
  70     int i;
  71     unsigned char *p = s;
  72
  73     for (i = 0; i < n; i++) {
  74         p[i] = c;
  75     }
  76
  77     return s;
  78 }
  79
  80 static inline void fill_hex(char *out, unsigned char val)
  81 {
  82     const char hex[] = "0123456789abcdef";
  83
  84     out[0] = hex[(val >> 4) & 0xf];
  85     out[1] = hex[val & 0xf];
  86 }
  87
  88 static inline void print_int(const char *desc, u64 addr)
  89 {
  90     unsigned char *addr_c = (unsigned char*)&addr;
  91     char out[] = ": 0xffffffffffffffff\n";
  92     unsigned int i;
  93
  94     for (i = 0; i < sizeof(addr); i++) {
  95         fill_hex(&out[4 + (i*2)], addr_c[i]);
  96     }
  97
  98     sclp_print(desc);
  99     sclp_print(out);
 100 }
 101
 102 static inline void debug_print_int(const char *desc, u64 addr)
 103 {
 104 #ifdef DEBUG
 105     print_int(desc, addr);
 106 #endif
 107 }
 108
 109 static inline void debug_print_addr(const char *desc, void *p)
 110 {
 111 #ifdef DEBUG
 112     debug_print_int(desc, (unsigned int)(unsigned long)p);
 113 #endif
 114 }
 115
 116 /***********************************************
 117  *           Hypercall functions               *
 118  ***********************************************/
 119
 120 #define KVM_S390_VIRTIO_NOTIFY          0
 121 #define KVM_S390_VIRTIO_RESET           1
 122 #define KVM_S390_VIRTIO_SET_STATUS      2
 123 #define KVM_S390_VIRTIO_CCW_NOTIFY      3
 124
 125 static inline void yield(void)
 126 {
 127         asm volatile ("diag 0,0,0x44"
 128                       : :
 129                       : "memory", "cc");
 130 }
 131
 132 #define SECTOR_SIZE 512
 133
 134 #endif /* S390_CCW_H */