4 * Copyright (C) 1998-2001 Hewlett-Packard Co
5 * David Mosberger-Tang <davidm@hpl.hp.com>
7 #include <linux/config.h>
10 # include <linux/pci.h>
13 #include <linux/efi.h>
20 #define MB (1024*1024UL)
22 #define SIMPLE_MEMMAP 1
25 # define NUM_MEM_DESCS 4
27 # define NUM_MEM_DESCS 16
30 static char fw_mem[( sizeof(struct ia64_boot_param)
31 + sizeof(efi_system_table_t)
32 + sizeof(efi_runtime_services_t)
33 + 1*sizeof(efi_config_table_t)
34 + sizeof(struct ia64_sal_systab)
35 + sizeof(struct ia64_sal_desc_entry_point)
36 + NUM_MEM_DESCS*(sizeof(efi_memory_desc_t))
37 + 1024)] __attribute__ ((aligned (8)));
39 #define SECS_PER_HOUR (60 * 60)
40 #define SECS_PER_DAY (SECS_PER_HOUR * 24)
42 /* Compute the `struct tm' representation of *T,
43 offset OFFSET seconds east of UTC,
44 and store year, yday, mon, mday, wday, hour, min, sec into *TP.
45 Return nonzero if successful. */
47 offtime (unsigned long t, efi_time_t *tp)
49 const unsigned short int __mon_yday[2][13] =
52 { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 },
54 { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }
56 long int days, rem, y;
57 const unsigned short int *ip;
59 days = t / SECS_PER_DAY;
60 rem = t % SECS_PER_DAY;
65 while (rem >= SECS_PER_DAY) {
69 tp->hour = rem / SECS_PER_HOUR;
71 tp->minute = rem / 60;
72 tp->second = rem % 60;
73 /* January 1, 1970 was a Thursday. */
76 # define DIV(a, b) ((a) / (b) - ((a) % (b) < 0))
77 # define LEAPS_THRU_END_OF(y) (DIV (y, 4) - DIV (y, 100) + DIV (y, 400))
78 # define __isleap(year) \
79 ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
81 while (days < 0 || days >= (__isleap (y) ? 366 : 365)) {
82 /* Guess a corrected year, assuming 365 days per year. */
83 long int yg = y + days / 365 - (days % 365 < 0);
85 /* Adjust DAYS and Y to match the guessed year. */
86 days -= ((yg - y) * 365 + LEAPS_THRU_END_OF (yg - 1)
87 - LEAPS_THRU_END_OF (y - 1));
91 ip = __mon_yday[__isleap(y)];
92 for (y = 11; days < (long int) ip[y]; --y)
100 extern void pal_emulator_static (void);
102 /* Macro to emulate SAL call using legacy IN and OUT calls to CF8, CFC etc.. */
104 #define BUILD_CMD(addr) ((0x80000000 | (addr)) & ~3)
106 #define REG_OFFSET(addr) (0x00000000000000FF & (addr))
107 #define DEVICE_FUNCTION(addr) (0x000000000000FF00 & (addr))
108 #define BUS_NUMBER(addr) (0x0000000000FF0000 & (addr))
111 fw_efi_get_time (efi_time_t *tm, efi_time_cap_t *tc)
113 #if defined(CONFIG_IA64_HP_SIM) || defined(CONFIG_IA64_GENERIC)
115 int tv_sec; /* must be 32bits to work */
119 ssc((unsigned long) &tv32bits, 0, 0, 0, SSC_GET_TOD);
121 memset(tm, 0, sizeof(*tm));
122 offtime(tv32bits.tv_sec, tm);
125 memset(tc, 0, sizeof(*tc));
127 # error Not implemented yet...
133 efi_reset_system (int reset_type, efi_status_t status, unsigned long data_size, efi_char16_t *data)
135 #if defined(CONFIG_IA64_HP_SIM) || defined(CONFIG_IA64_GENERIC)
136 ssc(status, 0, 0, 0, SSC_EXIT);
138 # error Not implemented yet...
143 efi_unimplemented (void)
145 return EFI_UNSUPPORTED;
148 static struct sal_ret_values
149 sal_emulator (long index, unsigned long in1, unsigned long in2,
150 unsigned long in3, unsigned long in4, unsigned long in5,
151 unsigned long in6, unsigned long in7)
159 * Don't do a "switch" here since that gives us code that
160 * isn't self-relocatable.
163 if (index == SAL_FREQ_BASE) {
165 case SAL_FREQ_BASE_PLATFORM:
169 case SAL_FREQ_BASE_INTERVAL_TIMER:
171 * Is this supposed to be the cr.itc frequency
172 * or something platform specific? The SAL
173 * doc ain't exactly clear on this...
178 case SAL_FREQ_BASE_REALTIME_CLOCK:
186 } else if (index == SAL_SET_VECTORS) {
188 } else if (index == SAL_GET_STATE_INFO) {
190 } else if (index == SAL_GET_STATE_INFO_SIZE) {
192 } else if (index == SAL_CLEAR_STATE_INFO) {
194 } else if (index == SAL_MC_RENDEZ) {
196 } else if (index == SAL_MC_SET_PARAMS) {
198 } else if (index == SAL_CACHE_FLUSH) {
200 } else if (index == SAL_CACHE_INIT) {
203 } else if (index == SAL_PCI_CONFIG_READ) {
205 * in1 contains the PCI configuration address and in2
206 * the size of the read. The value that is read is
207 * returned via the general register r9.
209 outl(BUILD_CMD(in1), 0xCF8);
210 if (in2 == 1) /* Reading byte */
211 r9 = inb(0xCFC + ((REG_OFFSET(in1) & 3)));
212 else if (in2 == 2) /* Reading word */
213 r9 = inw(0xCFC + ((REG_OFFSET(in1) & 2)));
214 else /* Reading dword */
216 status = PCIBIOS_SUCCESSFUL;
217 } else if (index == SAL_PCI_CONFIG_WRITE) {
219 * in1 contains the PCI configuration address, in2 the
220 * size of the write, and in3 the actual value to be
223 outl(BUILD_CMD(in1), 0xCF8);
224 if (in2 == 1) /* Writing byte */
225 outb(in3, 0xCFC + ((REG_OFFSET(in1) & 3)));
226 else if (in2 == 2) /* Writing word */
227 outw(in3, 0xCFC + ((REG_OFFSET(in1) & 2)));
228 else /* Writing dword */
230 status = PCIBIOS_SUCCESSFUL;
231 #endif /* CONFIG_PCI */
232 } else if (index == SAL_UPDATE_PAL) {
237 return ((struct sal_ret_values) {status, r9, r10, r11});
240 struct ia64_boot_param *
241 sys_fw_init (const char *args, int arglen)
243 efi_system_table_t *efi_systab;
244 efi_runtime_services_t *efi_runtime;
245 efi_config_table_t *efi_tables;
246 struct ia64_sal_systab *sal_systab;
247 efi_memory_desc_t *efi_memmap, *md;
248 unsigned long *pal_desc, *sal_desc;
249 struct ia64_sal_desc_entry_point *sal_ed;
250 struct ia64_boot_param *bp;
251 unsigned char checksum = 0;
254 # define MAKE_MD(typ, attr, start, end) \
256 md = efi_memmap + i++; \
259 md->phys_addr = start; \
261 md->num_pages = (end - start) >> 12; \
262 md->attribute = attr; \
265 memset(fw_mem, 0, sizeof(fw_mem));
267 pal_desc = (unsigned long *) &pal_emulator_static;
268 sal_desc = (unsigned long *) &sal_emulator;
271 efi_systab = (void *) cp; cp += sizeof(*efi_systab);
272 efi_runtime = (void *) cp; cp += sizeof(*efi_runtime);
273 efi_tables = (void *) cp; cp += sizeof(*efi_tables);
274 sal_systab = (void *) cp; cp += sizeof(*sal_systab);
275 sal_ed = (void *) cp; cp += sizeof(*sal_ed);
276 efi_memmap = (void *) cp; cp += NUM_MEM_DESCS*sizeof(*efi_memmap);
277 bp = (void *) cp; cp += sizeof(*bp);
278 cmd_line = (void *) cp;
283 memcpy(cmd_line, args, arglen);
287 cmd_line[arglen] = '\0';
289 memset(efi_systab, 0, sizeof(efi_systab));
290 efi_systab->hdr.signature = EFI_SYSTEM_TABLE_SIGNATURE;
291 efi_systab->hdr.revision = EFI_SYSTEM_TABLE_REVISION;
292 efi_systab->hdr.headersize = sizeof(efi_systab->hdr);
293 efi_systab->fw_vendor = __pa("H\0e\0w\0l\0e\0t\0t\0-\0P\0a\0c\0k\0a\0r\0d\0\0");
294 efi_systab->fw_revision = 1;
295 efi_systab->runtime = (void *) __pa(efi_runtime);
296 efi_systab->nr_tables = 1;
297 efi_systab->tables = __pa(efi_tables);
299 efi_runtime->hdr.signature = EFI_RUNTIME_SERVICES_SIGNATURE;
300 efi_runtime->hdr.revision = EFI_RUNTIME_SERVICES_REVISION;
301 efi_runtime->hdr.headersize = sizeof(efi_runtime->hdr);
302 efi_runtime->get_time = __pa(&fw_efi_get_time);
303 efi_runtime->set_time = __pa(&efi_unimplemented);
304 efi_runtime->get_wakeup_time = __pa(&efi_unimplemented);
305 efi_runtime->set_wakeup_time = __pa(&efi_unimplemented);
306 efi_runtime->set_virtual_address_map = __pa(&efi_unimplemented);
307 efi_runtime->get_variable = __pa(&efi_unimplemented);
308 efi_runtime->get_next_variable = __pa(&efi_unimplemented);
309 efi_runtime->set_variable = __pa(&efi_unimplemented);
310 efi_runtime->get_next_high_mono_count = __pa(&efi_unimplemented);
311 efi_runtime->reset_system = __pa(&efi_reset_system);
313 efi_tables->guid = SAL_SYSTEM_TABLE_GUID;
314 efi_tables->table = __pa(sal_systab);
316 /* fill in the SAL system table: */
317 memcpy(sal_systab->signature, "SST_", 4);
318 sal_systab->size = sizeof(*sal_systab);
319 sal_systab->sal_rev_minor = 1;
320 sal_systab->sal_rev_major = 0;
321 sal_systab->entry_count = 1;
323 #ifdef CONFIG_IA64_GENERIC
324 strcpy(sal_systab->oem_id, "Generic");
325 strcpy(sal_systab->product_id, "IA-64 system");
328 #ifdef CONFIG_IA64_HP_SIM
329 strcpy(sal_systab->oem_id, "Hewlett-Packard");
330 strcpy(sal_systab->product_id, "HP-simulator");
333 #ifdef CONFIG_IA64_SDV
334 strcpy(sal_systab->oem_id, "Intel");
335 strcpy(sal_systab->product_id, "SDV");
338 /* fill in an entry point: */
339 sal_ed->type = SAL_DESC_ENTRY_POINT;
340 sal_ed->pal_proc = __pa(pal_desc[0]);
341 sal_ed->sal_proc = __pa(sal_desc[0]);
342 sal_ed->gp = __pa(sal_desc[1]);
344 for (cp = (char *) sal_systab; cp < (char *) efi_memmap; ++cp)
347 sal_systab->checksum = -checksum;
350 /* simulate free memory at physical address zero */
351 MAKE_MD(EFI_BOOT_SERVICES_DATA, EFI_MEMORY_WB, 0*MB, 1*MB);
352 MAKE_MD(EFI_PAL_CODE, EFI_MEMORY_WB, 1*MB, 2*MB);
353 MAKE_MD(EFI_CONVENTIONAL_MEMORY, EFI_MEMORY_WB, 2*MB, 130*MB);
354 MAKE_MD(EFI_CONVENTIONAL_MEMORY, EFI_MEMORY_WB, 4096*MB, 4128*MB);
356 MAKE_MD( 4, 0x9, 0x0000000000000000, 0x0000000000001000);
357 MAKE_MD( 7, 0x9, 0x0000000000001000, 0x000000000008a000);
358 MAKE_MD( 4, 0x9, 0x000000000008a000, 0x00000000000a0000);
359 MAKE_MD( 5, 0x8000000000000009, 0x00000000000c0000, 0x0000000000100000);
360 MAKE_MD( 7, 0x9, 0x0000000000100000, 0x0000000004400000);
361 MAKE_MD( 2, 0x9, 0x0000000004400000, 0x0000000004be5000);
362 MAKE_MD( 7, 0x9, 0x0000000004be5000, 0x000000007f77e000);
363 MAKE_MD( 6, 0x8000000000000009, 0x000000007f77e000, 0x000000007fb94000);
364 MAKE_MD( 6, 0x8000000000000009, 0x000000007fb94000, 0x000000007fb95000);
365 MAKE_MD( 6, 0x8000000000000009, 0x000000007fb95000, 0x000000007fc00000);
366 MAKE_MD(13, 0x8000000000000009, 0x000000007fc00000, 0x000000007fc3a000);
367 MAKE_MD( 7, 0x9, 0x000000007fc3a000, 0x000000007fea0000);
368 MAKE_MD( 5, 0x8000000000000009, 0x000000007fea0000, 0x000000007fea8000);
369 MAKE_MD( 7, 0x9, 0x000000007fea8000, 0x000000007feab000);
370 MAKE_MD( 5, 0x8000000000000009, 0x000000007feab000, 0x000000007ffff000);
371 MAKE_MD( 7, 0x9, 0x00000000ff400000, 0x0000000104000000);
374 bp->efi_systab = __pa(&fw_mem);
375 bp->efi_memmap = __pa(efi_memmap);
376 bp->efi_memmap_size = NUM_MEM_DESCS*sizeof(efi_memory_desc_t);
377 bp->efi_memdesc_size = sizeof(efi_memory_desc_t);
378 bp->efi_memdesc_version = 1;
379 bp->command_line = __pa(cmd_line);
380 bp->console_info.num_cols = 80;
381 bp->console_info.num_rows = 25;
382 bp->console_info.orig_x = 0;
383 bp->console_info.orig_y = 24;