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11#ifndef S390_CCW_H
12#define S390_CCW_H
13
14
15
16typedef unsigned char u8;
17typedef unsigned short u16;
18typedef unsigned int u32;
19typedef unsigned long long u64;
20typedef unsigned long ulong;
21typedef unsigned char __u8;
22typedef unsigned short __u16;
23typedef unsigned int __u32;
24typedef unsigned long long __u64;
25
26#define true 1
27#define false 0
28#define PAGE_SIZE 4096
29
30#define EIO 1
31#define EBUSY 2
32#define ENODEV 3
33
34#ifndef NULL
35#define NULL 0
36#endif
37#ifndef MIN
38#define MIN(a, b) (((a) < (b)) ? (a) : (b))
39#endif
40#ifndef MIN_NON_ZERO
41#define MIN_NON_ZERO(a, b) ((a) == 0 ? (b) : \
42 ((b) == 0 ? (a) : (MIN(a, b))))
43#endif
44
45#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
46
47#include "cio.h"
48#include "iplb.h"
49
50
51void disabled_wait(void) __attribute__ ((__noreturn__));
52void consume_sclp_int(void);
53void consume_io_int(void);
54
55
56void write_subsystem_identification(void);
57void write_iplb_location(void);
58extern char stack[PAGE_SIZE * 8] __attribute__((__aligned__(PAGE_SIZE)));
59unsigned int get_loadparm_index(void);
60
61
62void sclp_print(const char *string);
63void sclp_set_write_mask(uint32_t receive_mask, uint32_t send_mask);
64void sclp_setup(void);
65void sclp_get_loadparm_ascii(char *loadparm);
66int sclp_read(char *str, size_t count);
67
68
69unsigned long virtio_load_direct(ulong rec_list1, ulong rec_list2,
70 ulong subchan_id, void *load_addr);
71bool virtio_is_supported(SubChannelId schid);
72int virtio_blk_setup_device(SubChannelId schid);
73int virtio_read(ulong sector, void *load_addr);
74
75
76void zipl_load(void);
77
78
79void write_reset_psw(uint64_t psw);
80void jump_to_IPL_code(uint64_t address);
81void jump_to_low_kernel(void);
82
83
84void menu_set_parms(uint8_t boot_menu_flag, uint32_t boot_menu_timeout);
85int menu_get_zipl_boot_index(const char *menu_data);
86bool menu_is_enabled_zipl(void);
87int menu_get_enum_boot_index(bool *valid_entries);
88bool menu_is_enabled_enum(void);
89
90#define MAX_BOOT_ENTRIES 31
91
92__attribute__ ((__noreturn__))
93static inline void panic(const char *string)
94{
95 sclp_print(string);
96 disabled_wait();
97}
98
99static inline void fill_hex(char *out, unsigned char val)
100{
101 const char hex[] = "0123456789abcdef";
102
103 out[0] = hex[(val >> 4) & 0xf];
104 out[1] = hex[val & 0xf];
105}
106
107static inline void fill_hex_val(char *out, void *ptr, unsigned size)
108{
109 unsigned char *value = ptr;
110 unsigned int i;
111
112 for (i = 0; i < size; i++) {
113 fill_hex(&out[i*2], value[i]);
114 }
115}
116
117static inline void print_int(const char *desc, u64 addr)
118{
119 char out[] = ": 0xffffffffffffffff\n";
120
121 fill_hex_val(&out[4], &addr, sizeof(addr));
122
123 sclp_print(desc);
124 sclp_print(out);
125}
126
127static inline void debug_print_int(const char *desc, u64 addr)
128{
129#ifdef DEBUG
130 print_int(desc, addr);
131#endif
132}
133
134static inline void debug_print_addr(const char *desc, void *p)
135{
136#ifdef DEBUG
137 debug_print_int(desc, (unsigned int)(unsigned long)p);
138#endif
139}
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144
145#define KVM_S390_VIRTIO_NOTIFY 0
146#define KVM_S390_VIRTIO_RESET 1
147#define KVM_S390_VIRTIO_SET_STATUS 2
148#define KVM_S390_VIRTIO_CCW_NOTIFY 3
149
150#define MAX_SECTOR_SIZE 4096
151
152static inline void IPL_assert(bool term, const char *message)
153{
154 if (!term) {
155 sclp_print("\n! ");
156 sclp_print(message);
157 panic(" !\n");
158 }
159}
160
161static inline void IPL_check(bool term, const char *message)
162{
163 if (!term) {
164 sclp_print("\n! WARNING: ");
165 sclp_print(message);
166 sclp_print(" !\n");
167 }
168}
169
170extern const unsigned char ebc2asc[256];
171static inline void ebcdic_to_ascii(const char *src,
172 char *dst,
173 unsigned int size)
174{
175 unsigned int i;
176
177 for (i = 0; i < size; i++) {
178 unsigned c = src[i];
179 dst[i] = ebc2asc[c];
180 }
181}
182
183#endif
184