4 * Copyright (C) 1998-2001 Hewlett-Packard Co
5 * David Mosberger-Tang <davidm@hpl.hp.com>
9 # include <linux/pci.h>
12 #include <linux/efi.h>
19 #define MB (1024*1024UL)
21 #define SIMPLE_MEMMAP 1
24 # define NUM_MEM_DESCS 4
26 # define NUM_MEM_DESCS 16
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)));
38 #define SECS_PER_HOUR (60 * 60)
39 #define SECS_PER_DAY (SECS_PER_HOUR * 24)
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. */
46 offtime (unsigned long t, efi_time_t *tp)
48 const unsigned short int __mon_yday[2][13] =
51 { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 },
53 { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }
55 long int days, rem, y;
56 const unsigned short int *ip;
58 days = t / SECS_PER_DAY;
59 rem = t % SECS_PER_DAY;
64 while (rem >= SECS_PER_DAY) {
68 tp->hour = rem / SECS_PER_HOUR;
70 tp->minute = rem / 60;
71 tp->second = rem % 60;
72 /* January 1, 1970 was a Thursday. */
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))
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);
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));
90 ip = __mon_yday[__isleap(y)];
91 for (y = 11; days < (long int) ip[y]; --y)
99 extern void pal_emulator_static (void);
101 /* Macro to emulate SAL call using legacy IN and OUT calls to CF8, CFC etc.. */
103 #define BUILD_CMD(addr) ((0x80000000 | (addr)) & ~3)
105 #define REG_OFFSET(addr) (0x00000000000000FF & (addr))
106 #define DEVICE_FUNCTION(addr) (0x000000000000FF00 & (addr))
107 #define BUS_NUMBER(addr) (0x0000000000FF0000 & (addr))
110 fw_efi_get_time (efi_time_t *tm, efi_time_cap_t *tc)
112 #if defined(CONFIG_IA64_HP_SIM) || defined(CONFIG_IA64_GENERIC)
114 int tv_sec; /* must be 32bits to work */
118 ssc((unsigned long) &tv32bits, 0, 0, 0, SSC_GET_TOD);
120 memset(tm, 0, sizeof(*tm));
121 offtime(tv32bits.tv_sec, tm);
124 memset(tc, 0, sizeof(*tc));
126 # error Not implemented yet...
132 efi_reset_system (int reset_type, efi_status_t status, unsigned long data_size, efi_char16_t *data)
134 #if defined(CONFIG_IA64_HP_SIM) || defined(CONFIG_IA64_GENERIC)
135 ssc(status, 0, 0, 0, SSC_EXIT);
137 # error Not implemented yet...
142 efi_unimplemented (void)
144 return EFI_UNSUPPORTED;
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)
158 * Don't do a "switch" here since that gives us code that
159 * isn't self-relocatable.
162 if (index == SAL_FREQ_BASE) {
163 if (in1 == SAL_FREQ_BASE_PLATFORM)
165 else if (in1 == SAL_FREQ_BASE_INTERVAL_TIMER) {
167 * Is this supposed to be the cr.itc frequency
168 * or something platform specific? The SAL
169 * doc ain't exactly clear on this...
172 } else if (in1 == SAL_FREQ_BASE_REALTIME_CLOCK)
176 } else if (index == SAL_SET_VECTORS) {
178 } else if (index == SAL_GET_STATE_INFO) {
180 } else if (index == SAL_GET_STATE_INFO_SIZE) {
182 } else if (index == SAL_CLEAR_STATE_INFO) {
184 } else if (index == SAL_MC_RENDEZ) {
186 } else if (index == SAL_MC_SET_PARAMS) {
188 } else if (index == SAL_CACHE_FLUSH) {
190 } else if (index == SAL_CACHE_INIT) {
193 } else if (index == SAL_PCI_CONFIG_READ) {
195 * in1 contains the PCI configuration address and in2
196 * the size of the read. The value that is read is
197 * returned via the general register r9.
199 outl(BUILD_CMD(in1), 0xCF8);
200 if (in2 == 1) /* Reading byte */
201 r9 = inb(0xCFC + ((REG_OFFSET(in1) & 3)));
202 else if (in2 == 2) /* Reading word */
203 r9 = inw(0xCFC + ((REG_OFFSET(in1) & 2)));
204 else /* Reading dword */
206 status = PCIBIOS_SUCCESSFUL;
207 } else if (index == SAL_PCI_CONFIG_WRITE) {
209 * in1 contains the PCI configuration address, in2 the
210 * size of the write, and in3 the actual value to be
213 outl(BUILD_CMD(in1), 0xCF8);
214 if (in2 == 1) /* Writing byte */
215 outb(in3, 0xCFC + ((REG_OFFSET(in1) & 3)));
216 else if (in2 == 2) /* Writing word */
217 outw(in3, 0xCFC + ((REG_OFFSET(in1) & 2)));
218 else /* Writing dword */
220 status = PCIBIOS_SUCCESSFUL;
221 #endif /* CONFIG_PCI */
222 } else if (index == SAL_UPDATE_PAL) {
227 return ((struct sal_ret_values) {status, r9, r10, r11});
230 struct ia64_boot_param *
231 sys_fw_init (const char *args, int arglen)
233 efi_system_table_t *efi_systab;
234 efi_runtime_services_t *efi_runtime;
235 efi_config_table_t *efi_tables;
236 struct ia64_sal_systab *sal_systab;
237 efi_memory_desc_t *efi_memmap, *md;
238 unsigned long *pal_desc, *sal_desc;
239 struct ia64_sal_desc_entry_point *sal_ed;
240 struct ia64_boot_param *bp;
241 unsigned char checksum = 0;
244 # define MAKE_MD(typ, attr, start, end) \
246 md = efi_memmap + i++; \
249 md->phys_addr = start; \
251 md->num_pages = (end - start) >> 12; \
252 md->attribute = attr; \
255 memset(fw_mem, 0, sizeof(fw_mem));
257 pal_desc = (unsigned long *) &pal_emulator_static;
258 sal_desc = (unsigned long *) &sal_emulator;
261 efi_systab = (void *) cp; cp += sizeof(*efi_systab);
262 efi_runtime = (void *) cp; cp += sizeof(*efi_runtime);
263 efi_tables = (void *) cp; cp += sizeof(*efi_tables);
264 sal_systab = (void *) cp; cp += sizeof(*sal_systab);
265 sal_ed = (void *) cp; cp += sizeof(*sal_ed);
266 efi_memmap = (void *) cp; cp += NUM_MEM_DESCS*sizeof(*efi_memmap);
267 bp = (void *) cp; cp += sizeof(*bp);
268 cmd_line = (void *) cp;
273 memcpy(cmd_line, args, arglen);
277 cmd_line[arglen] = '\0';
279 memset(efi_systab, 0, sizeof(*efi_systab));
280 efi_systab->hdr.signature = EFI_SYSTEM_TABLE_SIGNATURE;
281 efi_systab->hdr.revision = ((1 << 16) | 00);
282 efi_systab->hdr.headersize = sizeof(efi_systab->hdr);
283 efi_systab->fw_vendor = __pa("H\0e\0w\0l\0e\0t\0t\0-\0P\0a\0c\0k\0a\0r\0d\0\0");
284 efi_systab->fw_revision = 1;
285 efi_systab->runtime = (void *) __pa(efi_runtime);
286 efi_systab->nr_tables = 1;
287 efi_systab->tables = __pa(efi_tables);
289 efi_runtime->hdr.signature = EFI_RUNTIME_SERVICES_SIGNATURE;
290 efi_runtime->hdr.revision = EFI_RUNTIME_SERVICES_REVISION;
291 efi_runtime->hdr.headersize = sizeof(efi_runtime->hdr);
292 efi_runtime->get_time = __pa(&fw_efi_get_time);
293 efi_runtime->set_time = __pa(&efi_unimplemented);
294 efi_runtime->get_wakeup_time = __pa(&efi_unimplemented);
295 efi_runtime->set_wakeup_time = __pa(&efi_unimplemented);
296 efi_runtime->set_virtual_address_map = __pa(&efi_unimplemented);
297 efi_runtime->get_variable = __pa(&efi_unimplemented);
298 efi_runtime->get_next_variable = __pa(&efi_unimplemented);
299 efi_runtime->set_variable = __pa(&efi_unimplemented);
300 efi_runtime->get_next_high_mono_count = __pa(&efi_unimplemented);
301 efi_runtime->reset_system = __pa(&efi_reset_system);
303 efi_tables->guid = SAL_SYSTEM_TABLE_GUID;
304 efi_tables->table = __pa(sal_systab);
306 /* fill in the SAL system table: */
307 memcpy(sal_systab->signature, "SST_", 4);
308 sal_systab->size = sizeof(*sal_systab);
309 sal_systab->sal_rev_minor = 1;
310 sal_systab->sal_rev_major = 0;
311 sal_systab->entry_count = 1;
313 #ifdef CONFIG_IA64_GENERIC
314 strcpy(sal_systab->oem_id, "Generic");
315 strcpy(sal_systab->product_id, "IA-64 system");
318 #ifdef CONFIG_IA64_HP_SIM
319 strcpy(sal_systab->oem_id, "Hewlett-Packard");
320 strcpy(sal_systab->product_id, "HP-simulator");
323 /* fill in an entry point: */
324 sal_ed->type = SAL_DESC_ENTRY_POINT;
325 sal_ed->pal_proc = __pa(pal_desc[0]);
326 sal_ed->sal_proc = __pa(sal_desc[0]);
327 sal_ed->gp = __pa(sal_desc[1]);
329 for (cp = (char *) sal_systab; cp < (char *) efi_memmap; ++cp)
332 sal_systab->checksum = -checksum;
335 /* simulate free memory at physical address zero */
336 MAKE_MD(EFI_BOOT_SERVICES_DATA, EFI_MEMORY_WB, 0*MB, 1*MB);
337 MAKE_MD(EFI_PAL_CODE, EFI_MEMORY_WB, 1*MB, 2*MB);
338 MAKE_MD(EFI_CONVENTIONAL_MEMORY, EFI_MEMORY_WB, 2*MB, 130*MB);
339 MAKE_MD(EFI_CONVENTIONAL_MEMORY, EFI_MEMORY_WB, 4096*MB, 4128*MB);
341 MAKE_MD( 4, 0x9, 0x0000000000000000, 0x0000000000001000);
342 MAKE_MD( 7, 0x9, 0x0000000000001000, 0x000000000008a000);
343 MAKE_MD( 4, 0x9, 0x000000000008a000, 0x00000000000a0000);
344 MAKE_MD( 5, 0x8000000000000009, 0x00000000000c0000, 0x0000000000100000);
345 MAKE_MD( 7, 0x9, 0x0000000000100000, 0x0000000004400000);
346 MAKE_MD( 2, 0x9, 0x0000000004400000, 0x0000000004be5000);
347 MAKE_MD( 7, 0x9, 0x0000000004be5000, 0x000000007f77e000);
348 MAKE_MD( 6, 0x8000000000000009, 0x000000007f77e000, 0x000000007fb94000);
349 MAKE_MD( 6, 0x8000000000000009, 0x000000007fb94000, 0x000000007fb95000);
350 MAKE_MD( 6, 0x8000000000000009, 0x000000007fb95000, 0x000000007fc00000);
351 MAKE_MD(13, 0x8000000000000009, 0x000000007fc00000, 0x000000007fc3a000);
352 MAKE_MD( 7, 0x9, 0x000000007fc3a000, 0x000000007fea0000);
353 MAKE_MD( 5, 0x8000000000000009, 0x000000007fea0000, 0x000000007fea8000);
354 MAKE_MD( 7, 0x9, 0x000000007fea8000, 0x000000007feab000);
355 MAKE_MD( 5, 0x8000000000000009, 0x000000007feab000, 0x000000007ffff000);
356 MAKE_MD( 7, 0x9, 0x00000000ff400000, 0x0000000104000000);
359 bp->efi_systab = __pa(&fw_mem);
360 bp->efi_memmap = __pa(efi_memmap);
361 bp->efi_memmap_size = NUM_MEM_DESCS*sizeof(efi_memory_desc_t);
362 bp->efi_memdesc_size = sizeof(efi_memory_desc_t);
363 bp->efi_memdesc_version = 1;
364 bp->command_line = __pa(cmd_line);
365 bp->console_info.num_cols = 80;
366 bp->console_info.num_rows = 25;
367 bp->console_info.orig_x = 0;
368 bp->console_info.orig_y = 24;