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 */ 135