Remove obsolete #include <linux/config.h>
[linux-3.10.git] / arch / ia64 / hp / sim / boot / fw-emu.c
1 /*
2  * PAL & SAL emulation.
3  *
4  * Copyright (C) 1998-2001 Hewlett-Packard Co
5  *      David Mosberger-Tang <davidm@hpl.hp.com>
6  */
7
8 #ifdef CONFIG_PCI
9 # include <linux/pci.h>
10 #endif
11
12 #include <linux/efi.h>
13 #include <asm/io.h>
14 #include <asm/pal.h>
15 #include <asm/sal.h>
16
17 #include "ssc.h"
18
19 #define MB      (1024*1024UL)
20
21 #define SIMPLE_MEMMAP   1
22
23 #if SIMPLE_MEMMAP
24 # define NUM_MEM_DESCS  4
25 #else
26 # define NUM_MEM_DESCS  16
27 #endif
28
29 static char fw_mem[(  sizeof(struct ia64_boot_param)
30                     + sizeof(efi_system_table_t)
31                     + sizeof(efi_runtime_services_t)
32                     + 1*sizeof(efi_config_table_t)
33                     + sizeof(struct ia64_sal_systab)
34                     + sizeof(struct ia64_sal_desc_entry_point)
35                     + NUM_MEM_DESCS*(sizeof(efi_memory_desc_t))
36                     + 1024)] __attribute__ ((aligned (8)));
37
38 #define SECS_PER_HOUR   (60 * 60)
39 #define SECS_PER_DAY    (SECS_PER_HOUR * 24)
40
41 /* Compute the `struct tm' representation of *T,
42    offset OFFSET seconds east of UTC,
43    and store year, yday, mon, mday, wday, hour, min, sec into *TP.
44    Return nonzero if successful.  */
45 int
46 offtime (unsigned long t, efi_time_t *tp)
47 {
48         const unsigned short int __mon_yday[2][13] =
49         {
50                 /* Normal years.  */
51                 { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 },
52                 /* Leap years.  */
53                 { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }
54         };
55         long int days, rem, y;
56         const unsigned short int *ip;
57
58         days = t / SECS_PER_DAY;
59         rem = t % SECS_PER_DAY;
60         while (rem < 0) {
61                 rem += SECS_PER_DAY;
62                 --days;
63         }
64         while (rem >= SECS_PER_DAY) {
65                 rem -= SECS_PER_DAY;
66                 ++days;
67         }
68         tp->hour = rem / SECS_PER_HOUR;
69         rem %= SECS_PER_HOUR;
70         tp->minute = rem / 60;
71         tp->second = rem % 60;
72         /* January 1, 1970 was a Thursday.  */
73         y = 1970;
74
75 #       define DIV(a, b) ((a) / (b) - ((a) % (b) < 0))
76 #       define LEAPS_THRU_END_OF(y) (DIV (y, 4) - DIV (y, 100) + DIV (y, 400))
77 #       define __isleap(year) \
78           ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
79
80         while (days < 0 || days >= (__isleap (y) ? 366 : 365)) {
81                 /* Guess a corrected year, assuming 365 days per year.  */
82                 long int yg = y + days / 365 - (days % 365 < 0);
83
84                 /* Adjust DAYS and Y to match the guessed year.  */
85                 days -= ((yg - y) * 365 + LEAPS_THRU_END_OF (yg - 1)
86                          - LEAPS_THRU_END_OF (y - 1));
87                 y = yg;
88         }
89         tp->year = y;
90         ip = __mon_yday[__isleap(y)];
91         for (y = 11; days < (long int) ip[y]; --y)
92                 continue;
93         days -= ip[y];
94         tp->month = y + 1;
95         tp->day = days + 1;
96         return 1;
97 }
98
99 extern void pal_emulator_static (void);
100
101 /* Macro to emulate SAL call using legacy IN and OUT calls to CF8, CFC etc.. */
102
103 #define BUILD_CMD(addr)         ((0x80000000 | (addr)) & ~3)
104
105 #define REG_OFFSET(addr)        (0x00000000000000FF & (addr))
106 #define DEVICE_FUNCTION(addr)   (0x000000000000FF00 & (addr))
107 #define BUS_NUMBER(addr)        (0x0000000000FF0000 & (addr))
108
109 static efi_status_t
110 fw_efi_get_time (efi_time_t *tm, efi_time_cap_t *tc)
111 {
112 #if defined(CONFIG_IA64_HP_SIM) || defined(CONFIG_IA64_GENERIC)
113         struct {
114                 int tv_sec;     /* must be 32bits to work */
115                 int tv_usec;
116         } tv32bits;
117
118         ssc((unsigned long) &tv32bits, 0, 0, 0, SSC_GET_TOD);
119
120         memset(tm, 0, sizeof(*tm));
121         offtime(tv32bits.tv_sec, tm);
122
123         if (tc)
124                 memset(tc, 0, sizeof(*tc));
125 #else
126 #       error Not implemented yet...
127 #endif
128         return EFI_SUCCESS;
129 }
130
131 static void
132 efi_reset_system (int reset_type, efi_status_t status, unsigned long data_size, efi_char16_t *data)
133 {
134 #if defined(CONFIG_IA64_HP_SIM) || defined(CONFIG_IA64_GENERIC)
135         ssc(status, 0, 0, 0, SSC_EXIT);
136 #else
137 #       error Not implemented yet...
138 #endif
139 }
140
141 static efi_status_t
142 efi_unimplemented (void)
143 {
144         return EFI_UNSUPPORTED;
145 }
146
147 static struct sal_ret_values
148 sal_emulator (long index, unsigned long in1, unsigned long in2,
149               unsigned long in3, unsigned long in4, unsigned long in5,
150               unsigned long in6, unsigned long in7)
151 {
152         long r9  = 0;
153         long r10 = 0;
154         long r11 = 0;
155         long status;
156
157         /*
158          * Don't do a "switch" here since that gives us code that
159          * isn't self-relocatable.
160          */
161         status = 0;
162         if (index == SAL_FREQ_BASE) {
163                 switch (in1) {
164                       case SAL_FREQ_BASE_PLATFORM:
165                         r9 = 200000000;
166                         break;
167
168                       case SAL_FREQ_BASE_INTERVAL_TIMER:
169                         /*
170                          * Is this supposed to be the cr.itc frequency
171                          * or something platform specific?  The SAL
172                          * doc ain't exactly clear on this...
173                          */
174                         r9 = 700000000;
175                         break;
176
177                       case SAL_FREQ_BASE_REALTIME_CLOCK:
178                         r9 = 1;
179                         break;
180
181                       default:
182                         status = -1;
183                         break;
184                 }
185         } else if (index == SAL_SET_VECTORS) {
186                 ;
187         } else if (index == SAL_GET_STATE_INFO) {
188                 ;
189         } else if (index == SAL_GET_STATE_INFO_SIZE) {
190                 ;
191         } else if (index == SAL_CLEAR_STATE_INFO) {
192                 ;
193         } else if (index == SAL_MC_RENDEZ) {
194                 ;
195         } else if (index == SAL_MC_SET_PARAMS) {
196                 ;
197         } else if (index == SAL_CACHE_FLUSH) {
198                 ;
199         } else if (index == SAL_CACHE_INIT) {
200                 ;
201 #ifdef CONFIG_PCI
202         } else if (index == SAL_PCI_CONFIG_READ) {
203                 /*
204                  * in1 contains the PCI configuration address and in2
205                  * the size of the read.  The value that is read is
206                  * returned via the general register r9.
207                  */
208                 outl(BUILD_CMD(in1), 0xCF8);
209                 if (in2 == 1)                           /* Reading byte  */
210                         r9 = inb(0xCFC + ((REG_OFFSET(in1) & 3)));
211                 else if (in2 == 2)                      /* Reading word  */
212                         r9 = inw(0xCFC + ((REG_OFFSET(in1) & 2)));
213                 else                                    /* Reading dword */
214                         r9 = inl(0xCFC);
215                 status = PCIBIOS_SUCCESSFUL;
216         } else if (index == SAL_PCI_CONFIG_WRITE) {
217                 /*
218                  * in1 contains the PCI configuration address, in2 the
219                  * size of the write, and in3 the actual value to be
220                  * written out.
221                  */
222                 outl(BUILD_CMD(in1), 0xCF8);
223                 if (in2 == 1)                           /* Writing byte  */
224                         outb(in3, 0xCFC + ((REG_OFFSET(in1) & 3)));
225                 else if (in2 == 2)                      /* Writing word  */
226                         outw(in3, 0xCFC + ((REG_OFFSET(in1) & 2)));
227                 else                                    /* Writing dword */
228                         outl(in3, 0xCFC);
229                 status = PCIBIOS_SUCCESSFUL;
230 #endif /* CONFIG_PCI */
231         } else if (index == SAL_UPDATE_PAL) {
232                 ;
233         } else {
234                 status = -1;
235         }
236         return ((struct sal_ret_values) {status, r9, r10, r11});
237 }
238
239 struct ia64_boot_param *
240 sys_fw_init (const char *args, int arglen)
241 {
242         efi_system_table_t *efi_systab;
243         efi_runtime_services_t *efi_runtime;
244         efi_config_table_t *efi_tables;
245         struct ia64_sal_systab *sal_systab;
246         efi_memory_desc_t *efi_memmap, *md;
247         unsigned long *pal_desc, *sal_desc;
248         struct ia64_sal_desc_entry_point *sal_ed;
249         struct ia64_boot_param *bp;
250         unsigned char checksum = 0;
251         char *cp, *cmd_line;
252         int i = 0;
253 #       define MAKE_MD(typ, attr, start, end)           \
254         do {                                            \
255                 md = efi_memmap + i++;                  \
256                 md->type = typ;                         \
257                 md->pad = 0;                            \
258                 md->phys_addr = start;                  \
259                 md->virt_addr = 0;                      \
260                 md->num_pages = (end - start) >> 12;    \
261                 md->attribute = attr;                   \
262         } while (0)
263
264         memset(fw_mem, 0, sizeof(fw_mem));
265
266         pal_desc = (unsigned long *) &pal_emulator_static;
267         sal_desc = (unsigned long *) &sal_emulator;
268
269         cp = fw_mem;
270         efi_systab  = (void *) cp; cp += sizeof(*efi_systab);
271         efi_runtime = (void *) cp; cp += sizeof(*efi_runtime);
272         efi_tables  = (void *) cp; cp += sizeof(*efi_tables);
273         sal_systab  = (void *) cp; cp += sizeof(*sal_systab);
274         sal_ed      = (void *) cp; cp += sizeof(*sal_ed);
275         efi_memmap  = (void *) cp; cp += NUM_MEM_DESCS*sizeof(*efi_memmap);
276         bp          = (void *) cp; cp += sizeof(*bp);
277         cmd_line    = (void *) cp;
278
279         if (args) {
280                 if (arglen >= 1024)
281                         arglen = 1023;
282                 memcpy(cmd_line, args, arglen);
283         } else {
284                 arglen = 0;
285         }
286         cmd_line[arglen] = '\0';
287
288         memset(efi_systab, 0, sizeof(efi_systab));
289         efi_systab->hdr.signature = EFI_SYSTEM_TABLE_SIGNATURE;
290         efi_systab->hdr.revision  = EFI_SYSTEM_TABLE_REVISION;
291         efi_systab->hdr.headersize = sizeof(efi_systab->hdr);
292         efi_systab->fw_vendor = __pa("H\0e\0w\0l\0e\0t\0t\0-\0P\0a\0c\0k\0a\0r\0d\0\0");
293         efi_systab->fw_revision = 1;
294         efi_systab->runtime = (void *) __pa(efi_runtime);
295         efi_systab->nr_tables = 1;
296         efi_systab->tables = __pa(efi_tables);
297
298         efi_runtime->hdr.signature = EFI_RUNTIME_SERVICES_SIGNATURE;
299         efi_runtime->hdr.revision = EFI_RUNTIME_SERVICES_REVISION;
300         efi_runtime->hdr.headersize = sizeof(efi_runtime->hdr);
301         efi_runtime->get_time = __pa(&fw_efi_get_time);
302         efi_runtime->set_time = __pa(&efi_unimplemented);
303         efi_runtime->get_wakeup_time = __pa(&efi_unimplemented);
304         efi_runtime->set_wakeup_time = __pa(&efi_unimplemented);
305         efi_runtime->set_virtual_address_map = __pa(&efi_unimplemented);
306         efi_runtime->get_variable = __pa(&efi_unimplemented);
307         efi_runtime->get_next_variable = __pa(&efi_unimplemented);
308         efi_runtime->set_variable = __pa(&efi_unimplemented);
309         efi_runtime->get_next_high_mono_count = __pa(&efi_unimplemented);
310         efi_runtime->reset_system = __pa(&efi_reset_system);
311
312         efi_tables->guid = SAL_SYSTEM_TABLE_GUID;
313         efi_tables->table = __pa(sal_systab);
314
315         /* fill in the SAL system table: */
316         memcpy(sal_systab->signature, "SST_", 4);
317         sal_systab->size = sizeof(*sal_systab);
318         sal_systab->sal_rev_minor = 1;
319         sal_systab->sal_rev_major = 0;
320         sal_systab->entry_count = 1;
321
322 #ifdef CONFIG_IA64_GENERIC
323         strcpy(sal_systab->oem_id, "Generic");
324         strcpy(sal_systab->product_id, "IA-64 system");
325 #endif
326
327 #ifdef CONFIG_IA64_HP_SIM
328         strcpy(sal_systab->oem_id, "Hewlett-Packard");
329         strcpy(sal_systab->product_id, "HP-simulator");
330 #endif
331
332 #ifdef CONFIG_IA64_SDV
333         strcpy(sal_systab->oem_id, "Intel");
334         strcpy(sal_systab->product_id, "SDV");
335 #endif
336
337         /* fill in an entry point: */
338         sal_ed->type = SAL_DESC_ENTRY_POINT;
339         sal_ed->pal_proc = __pa(pal_desc[0]);
340         sal_ed->sal_proc = __pa(sal_desc[0]);
341         sal_ed->gp = __pa(sal_desc[1]);
342
343         for (cp = (char *) sal_systab; cp < (char *) efi_memmap; ++cp)
344                 checksum += *cp;
345
346         sal_systab->checksum = -checksum;
347
348 #if SIMPLE_MEMMAP
349         /* simulate free memory at physical address zero */
350         MAKE_MD(EFI_BOOT_SERVICES_DATA,         EFI_MEMORY_WB,    0*MB,    1*MB);
351         MAKE_MD(EFI_PAL_CODE,                   EFI_MEMORY_WB,    1*MB,    2*MB);
352         MAKE_MD(EFI_CONVENTIONAL_MEMORY,        EFI_MEMORY_WB,    2*MB,  130*MB);
353         MAKE_MD(EFI_CONVENTIONAL_MEMORY,        EFI_MEMORY_WB, 4096*MB, 4128*MB);
354 #else
355         MAKE_MD( 4,                0x9, 0x0000000000000000, 0x0000000000001000);
356         MAKE_MD( 7,                0x9, 0x0000000000001000, 0x000000000008a000);
357         MAKE_MD( 4,                0x9, 0x000000000008a000, 0x00000000000a0000);
358         MAKE_MD( 5, 0x8000000000000009, 0x00000000000c0000, 0x0000000000100000);
359         MAKE_MD( 7,                0x9, 0x0000000000100000, 0x0000000004400000);
360         MAKE_MD( 2,                0x9, 0x0000000004400000, 0x0000000004be5000);
361         MAKE_MD( 7,                0x9, 0x0000000004be5000, 0x000000007f77e000);
362         MAKE_MD( 6, 0x8000000000000009, 0x000000007f77e000, 0x000000007fb94000);
363         MAKE_MD( 6, 0x8000000000000009, 0x000000007fb94000, 0x000000007fb95000);
364         MAKE_MD( 6, 0x8000000000000009, 0x000000007fb95000, 0x000000007fc00000);
365         MAKE_MD(13, 0x8000000000000009, 0x000000007fc00000, 0x000000007fc3a000);
366         MAKE_MD( 7,                0x9, 0x000000007fc3a000, 0x000000007fea0000);
367         MAKE_MD( 5, 0x8000000000000009, 0x000000007fea0000, 0x000000007fea8000);
368         MAKE_MD( 7,                0x9, 0x000000007fea8000, 0x000000007feab000);
369         MAKE_MD( 5, 0x8000000000000009, 0x000000007feab000, 0x000000007ffff000);
370         MAKE_MD( 7,                0x9, 0x00000000ff400000, 0x0000000104000000);
371 #endif
372
373         bp->efi_systab = __pa(&fw_mem);
374         bp->efi_memmap = __pa(efi_memmap);
375         bp->efi_memmap_size = NUM_MEM_DESCS*sizeof(efi_memory_desc_t);
376         bp->efi_memdesc_size = sizeof(efi_memory_desc_t);
377         bp->efi_memdesc_version = 1;
378         bp->command_line = __pa(cmd_line);
379         bp->console_info.num_cols = 80;
380         bp->console_info.num_rows = 25;
381         bp->console_info.orig_x = 0;
382         bp->console_info.orig_y = 24;
383         bp->fpswa = 0;
384
385         return bp;
386 }