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-rw-r--r--arch/i386/kernel/setup.c140
1 files changed, 27 insertions, 113 deletions
diff --git a/arch/i386/kernel/setup.c b/arch/i386/kernel/setup.c
index ab62a9f4701e..d313a11acafa 100644
--- a/arch/i386/kernel/setup.c
+++ b/arch/i386/kernel/setup.c
@@ -1288,7 +1288,7 @@ legacy_init_iomem_resources(struct resource *code_resource, struct resource *dat
1288 struct resource *res; 1288 struct resource *res;
1289 if (e820.map[i].addr + e820.map[i].size > 0x100000000ULL) 1289 if (e820.map[i].addr + e820.map[i].size > 0x100000000ULL)
1290 continue; 1290 continue;
1291 res = alloc_bootmem_low(sizeof(struct resource)); 1291 res = kzalloc(sizeof(struct resource), GFP_ATOMIC);
1292 switch (e820.map[i].type) { 1292 switch (e820.map[i].type) {
1293 case E820_RAM: res->name = "System RAM"; break; 1293 case E820_RAM: res->name = "System RAM"; break;
1294 case E820_ACPI: res->name = "ACPI Tables"; break; 1294 case E820_ACPI: res->name = "ACPI Tables"; break;
@@ -1316,13 +1316,15 @@ legacy_init_iomem_resources(struct resource *code_resource, struct resource *dat
1316 1316
1317/* 1317/*
1318 * Request address space for all standard resources 1318 * Request address space for all standard resources
1319 *
1320 * This is called just before pcibios_assign_resources(), which is also
1321 * an fs_initcall, but is linked in later (in arch/i386/pci/i386.c).
1319 */ 1322 */
1320static void __init register_memory(void) 1323static int __init request_standard_resources(void)
1321{ 1324{
1322 unsigned long gapstart, gapsize, round; 1325 int i;
1323 unsigned long long last;
1324 int i;
1325 1326
1327 printk("Setting up standard PCI resources\n");
1326 if (efi_enabled) 1328 if (efi_enabled)
1327 efi_initialize_iomem_resources(&code_resource, &data_resource); 1329 efi_initialize_iomem_resources(&code_resource, &data_resource);
1328 else 1330 else
@@ -1334,6 +1336,16 @@ static void __init register_memory(void)
1334 /* request I/O space for devices used on all i[345]86 PCs */ 1336 /* request I/O space for devices used on all i[345]86 PCs */
1335 for (i = 0; i < STANDARD_IO_RESOURCES; i++) 1337 for (i = 0; i < STANDARD_IO_RESOURCES; i++)
1336 request_resource(&ioport_resource, &standard_io_resources[i]); 1338 request_resource(&ioport_resource, &standard_io_resources[i]);
1339 return 0;
1340}
1341
1342fs_initcall(request_standard_resources);
1343
1344static void __init register_memory(void)
1345{
1346 unsigned long gapstart, gapsize, round;
1347 unsigned long long last;
1348 int i;
1337 1349
1338 /* 1350 /*
1339 * Search for the bigest gap in the low 32 bits of the e820 1351 * Search for the bigest gap in the low 32 bits of the e820
@@ -1377,101 +1389,6 @@ static void __init register_memory(void)
1377 pci_mem_start, gapstart, gapsize); 1389 pci_mem_start, gapstart, gapsize);
1378} 1390}
1379 1391
1380/* Use inline assembly to define this because the nops are defined
1381 as inline assembly strings in the include files and we cannot
1382 get them easily into strings. */
1383asm("\t.data\nintelnops: "
1384 GENERIC_NOP1 GENERIC_NOP2 GENERIC_NOP3 GENERIC_NOP4 GENERIC_NOP5 GENERIC_NOP6
1385 GENERIC_NOP7 GENERIC_NOP8);
1386asm("\t.data\nk8nops: "
1387 K8_NOP1 K8_NOP2 K8_NOP3 K8_NOP4 K8_NOP5 K8_NOP6
1388 K8_NOP7 K8_NOP8);
1389asm("\t.data\nk7nops: "
1390 K7_NOP1 K7_NOP2 K7_NOP3 K7_NOP4 K7_NOP5 K7_NOP6
1391 K7_NOP7 K7_NOP8);
1392
1393extern unsigned char intelnops[], k8nops[], k7nops[];
1394static unsigned char *intel_nops[ASM_NOP_MAX+1] = {
1395 NULL,
1396 intelnops,
1397 intelnops + 1,
1398 intelnops + 1 + 2,
1399 intelnops + 1 + 2 + 3,
1400 intelnops + 1 + 2 + 3 + 4,
1401 intelnops + 1 + 2 + 3 + 4 + 5,
1402 intelnops + 1 + 2 + 3 + 4 + 5 + 6,
1403 intelnops + 1 + 2 + 3 + 4 + 5 + 6 + 7,
1404};
1405static unsigned char *k8_nops[ASM_NOP_MAX+1] = {
1406 NULL,
1407 k8nops,
1408 k8nops + 1,
1409 k8nops + 1 + 2,
1410 k8nops + 1 + 2 + 3,
1411 k8nops + 1 + 2 + 3 + 4,
1412 k8nops + 1 + 2 + 3 + 4 + 5,
1413 k8nops + 1 + 2 + 3 + 4 + 5 + 6,
1414 k8nops + 1 + 2 + 3 + 4 + 5 + 6 + 7,
1415};
1416static unsigned char *k7_nops[ASM_NOP_MAX+1] = {
1417 NULL,
1418 k7nops,
1419 k7nops + 1,
1420 k7nops + 1 + 2,
1421 k7nops + 1 + 2 + 3,
1422 k7nops + 1 + 2 + 3 + 4,
1423 k7nops + 1 + 2 + 3 + 4 + 5,
1424 k7nops + 1 + 2 + 3 + 4 + 5 + 6,
1425 k7nops + 1 + 2 + 3 + 4 + 5 + 6 + 7,
1426};
1427static struct nop {
1428 int cpuid;
1429 unsigned char **noptable;
1430} noptypes[] = {
1431 { X86_FEATURE_K8, k8_nops },
1432 { X86_FEATURE_K7, k7_nops },
1433 { -1, NULL }
1434};
1435
1436/* Replace instructions with better alternatives for this CPU type.
1437
1438 This runs before SMP is initialized to avoid SMP problems with
1439 self modifying code. This implies that assymetric systems where
1440 APs have less capabilities than the boot processor are not handled.
1441 Tough. Make sure you disable such features by hand. */
1442void apply_alternatives(void *start, void *end)
1443{
1444 struct alt_instr *a;
1445 int diff, i, k;
1446 unsigned char **noptable = intel_nops;
1447 for (i = 0; noptypes[i].cpuid >= 0; i++) {
1448 if (boot_cpu_has(noptypes[i].cpuid)) {
1449 noptable = noptypes[i].noptable;
1450 break;
1451 }
1452 }
1453 for (a = start; (void *)a < end; a++) {
1454 if (!boot_cpu_has(a->cpuid))
1455 continue;
1456 BUG_ON(a->replacementlen > a->instrlen);
1457 memcpy(a->instr, a->replacement, a->replacementlen);
1458 diff = a->instrlen - a->replacementlen;
1459 /* Pad the rest with nops */
1460 for (i = a->replacementlen; diff > 0; diff -= k, i += k) {
1461 k = diff;
1462 if (k > ASM_NOP_MAX)
1463 k = ASM_NOP_MAX;
1464 memcpy(a->instr + i, noptable[k], k);
1465 }
1466 }
1467}
1468
1469void __init alternative_instructions(void)
1470{
1471 extern struct alt_instr __alt_instructions[], __alt_instructions_end[];
1472 apply_alternatives(__alt_instructions, __alt_instructions_end);
1473}
1474
1475static char * __init machine_specific_memory_setup(void); 1392static char * __init machine_specific_memory_setup(void);
1476 1393
1477#ifdef CONFIG_MCA 1394#ifdef CONFIG_MCA
@@ -1554,6 +1471,16 @@ void __init setup_arch(char **cmdline_p)
1554 1471
1555 parse_cmdline_early(cmdline_p); 1472 parse_cmdline_early(cmdline_p);
1556 1473
1474#ifdef CONFIG_EARLY_PRINTK
1475 {
1476 char *s = strstr(*cmdline_p, "earlyprintk=");
1477 if (s) {
1478 setup_early_printk(strchr(s, '=') + 1);
1479 printk("early console enabled\n");
1480 }
1481 }
1482#endif
1483
1557 max_low_pfn = setup_memory(); 1484 max_low_pfn = setup_memory();
1558 1485
1559 /* 1486 /*
@@ -1578,19 +1505,6 @@ void __init setup_arch(char **cmdline_p)
1578 * NOTE: at this point the bootmem allocator is fully available. 1505 * NOTE: at this point the bootmem allocator is fully available.
1579 */ 1506 */
1580 1507
1581#ifdef CONFIG_EARLY_PRINTK
1582 {
1583 char *s = strstr(*cmdline_p, "earlyprintk=");
1584 if (s) {
1585 extern void setup_early_printk(char *);
1586
1587 setup_early_printk(strchr(s, '=') + 1);
1588 printk("early console enabled\n");
1589 }
1590 }
1591#endif
1592
1593
1594 dmi_scan_machine(); 1508 dmi_scan_machine();
1595 1509
1596#ifdef CONFIG_X86_GENERICARCH 1510#ifdef CONFIG_X86_GENERICARCH