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 */ 143