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c9c39d3b AG |
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 | ||
7f61cbc1 CB |
48 | /* start.s */ |
49 | void disabled_wait(void); | |
50 | ||
c9c39d3b AG |
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 */ |