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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#ifndef EIO
31#define EIO 1
32#endif
33#ifndef EBUSY
34#define EBUSY 2
35#endif
36#ifndef NULL
37#define NULL 0
38#endif
39#ifndef MIN
40#define MIN(a, b) (((a) < (b)) ? (a) : (b))
41#endif
42#ifndef MIN_NON_ZERO
43#define MIN_NON_ZERO(a, b) ((a) == 0 ? (b) : \
44 ((b) == 0 ? (a) : (MIN(a, b))))
45#endif
46
47#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
48
49#include "cio.h"
50#include "iplb.h"
51
52typedef struct irb Irb;
53typedef struct ccw1 Ccw1;
54typedef struct cmd_orb CmdOrb;
55typedef struct schib Schib;
56typedef struct chsc_area_sda ChscAreaSda;
57typedef struct senseid SenseId;
58typedef struct subchannel_id SubChannelId;
59
60
61void disabled_wait(void);
62void consume_sclp_int(void);
63
64
65void panic(const char *string);
66void write_subsystem_identification(void);
67extern char stack[PAGE_SIZE * 8] __attribute__((__aligned__(PAGE_SIZE)));
68unsigned int get_loadparm_index(void);
69
70
71void sclp_print(const char *string);
72void sclp_set_write_mask(uint32_t receive_mask, uint32_t send_mask);
73void sclp_setup(void);
74void sclp_get_loadparm_ascii(char *loadparm);
75int sclp_read(char *str, size_t count);
76
77
78unsigned long virtio_load_direct(ulong rec_list1, ulong rec_list2,
79 ulong subchan_id, void *load_addr);
80bool virtio_is_supported(SubChannelId schid);
81void virtio_blk_setup_device(SubChannelId schid);
82int virtio_read(ulong sector, void *load_addr);
83int enable_mss_facility(void);
84u64 get_clock(void);
85ulong get_second(void);
86
87
88void zipl_load(void);
89
90
91void jump_to_IPL_code(uint64_t address);
92void jump_to_low_kernel(void);
93
94
95void menu_set_parms(uint8_t boot_menu_flag, uint32_t boot_menu_timeout);
96int menu_get_zipl_boot_index(const char *menu_data);
97bool menu_is_enabled_zipl(void);
98int menu_get_enum_boot_index(bool *valid_entries);
99bool menu_is_enabled_enum(void);
100
101#define MAX_BOOT_ENTRIES 31
102
103static inline void fill_hex(char *out, unsigned char val)
104{
105 const char hex[] = "0123456789abcdef";
106
107 out[0] = hex[(val >> 4) & 0xf];
108 out[1] = hex[val & 0xf];
109}
110
111static inline void fill_hex_val(char *out, void *ptr, unsigned size)
112{
113 unsigned char *value = ptr;
114 unsigned int i;
115
116 for (i = 0; i < size; i++) {
117 fill_hex(&out[i*2], value[i]);
118 }
119}
120
121static inline void print_int(const char *desc, u64 addr)
122{
123 char out[] = ": 0xffffffffffffffff\n";
124
125 fill_hex_val(&out[4], &addr, sizeof(addr));
126
127 sclp_print(desc);
128 sclp_print(out);
129}
130
131static inline void debug_print_int(const char *desc, u64 addr)
132{
133#ifdef DEBUG
134 print_int(desc, addr);
135#endif
136}
137
138static inline void debug_print_addr(const char *desc, void *p)
139{
140#ifdef DEBUG
141 debug_print_int(desc, (unsigned int)(unsigned long)p);
142#endif
143}
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148
149#define KVM_S390_VIRTIO_NOTIFY 0
150#define KVM_S390_VIRTIO_RESET 1
151#define KVM_S390_VIRTIO_SET_STATUS 2
152#define KVM_S390_VIRTIO_CCW_NOTIFY 3
153
154static inline void yield(void)
155{
156 asm volatile ("diag 0,0,0x44"
157 : :
158 : "memory", "cc");
159}
160
161#define MAX_SECTOR_SIZE 4096
162
163static inline void sleep(unsigned int seconds)
164{
165 ulong target = get_second() + seconds;
166
167 while (get_second() < target) {
168 yield();
169 }
170}
171
172static inline void IPL_assert(bool term, const char *message)
173{
174 if (!term) {
175 sclp_print("\n! ");
176 sclp_print(message);
177 panic(" !\n");
178 }
179}
180
181static inline void IPL_check(bool term, const char *message)
182{
183 if (!term) {
184 sclp_print("\n! WARNING: ");
185 sclp_print(message);
186 sclp_print(" !\n");
187 }
188}
189
190extern const unsigned char ebc2asc[256];
191static inline void ebcdic_to_ascii(const char *src,
192 char *dst,
193 unsigned int size)
194{
195 unsigned int i;
196
197 for (i = 0; i < size; i++) {
198 unsigned c = src[i];
199 dst[i] = ebc2asc[c];
200 }
201}
202
203#endif
204