X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=arch%2Fpowerpc%2Fkernel%2Fprom_init.c;h=8c28eb0cbdac7392c3ed9d895e67aa81545b7613;hb=45c091bb2d453ce4a8b06cf19872ec7a77fc4799;hp=d66c5e77fcff35c9c5eb921339bd016b0c9c9978;hpb=bac30d1a78d0f11c613968fc8b351a91ed465386;p=deliverable%2Flinux.git diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c index d66c5e77fcff..8c28eb0cbdac 100644 --- a/arch/powerpc/kernel/prom_init.c +++ b/arch/powerpc/kernel/prom_init.c @@ -194,19 +194,12 @@ static int __initdata of_platform; static char __initdata prom_cmd_line[COMMAND_LINE_SIZE]; -static unsigned long __initdata prom_memory_limit; - static unsigned long __initdata alloc_top; static unsigned long __initdata alloc_top_high; static unsigned long __initdata alloc_bottom; static unsigned long __initdata rmo_top; static unsigned long __initdata ram_top; -#ifdef CONFIG_KEXEC -static unsigned long __initdata prom_crashk_base; -static unsigned long __initdata prom_crashk_size; -#endif - static struct mem_map_entry __initdata mem_reserve_map[MEM_RESERVE_MAP_SIZE]; static int __initdata mem_reserve_cnt; @@ -574,7 +567,7 @@ static void __init early_cmdline_parse(void) if ((long)_prom->chosen > 0) l = prom_getprop(_prom->chosen, "bootargs", p, COMMAND_LINE_SIZE-1); #ifdef CONFIG_CMDLINE - if (l == 0) /* dbl check */ + if (l <= 0 || p[0] == '\0') /* dbl check */ strlcpy(RELOC(prom_cmd_line), RELOC(CONFIG_CMDLINE), sizeof(prom_cmd_line)); #endif /* CONFIG_CMDLINE */ @@ -593,53 +586,100 @@ static void __init early_cmdline_parse(void) RELOC(iommu_force_on) = 1; } #endif - - opt = strstr(RELOC(prom_cmd_line), RELOC("mem=")); - if (opt) { - opt += 4; - RELOC(prom_memory_limit) = prom_memparse(opt, (const char **)&opt); -#ifdef CONFIG_PPC64 - /* Align to 16 MB == size of ppc64 large page */ - RELOC(prom_memory_limit) = ALIGN(RELOC(prom_memory_limit), 0x1000000); -#endif - } - -#ifdef CONFIG_KEXEC - /* - * crashkernel=size@addr specifies the location to reserve for - * crash kernel. - */ - opt = strstr(RELOC(prom_cmd_line), RELOC("crashkernel=")); - if (opt) { - opt += 12; - RELOC(prom_crashk_size) = - prom_memparse(opt, (const char **)&opt); - - if (ALIGN(RELOC(prom_crashk_size), 0x1000000) != - RELOC(prom_crashk_size)) { - prom_printf("Warning: crashkernel size is not " - "aligned to 16MB\n"); - } - - /* - * At present, the crash kernel always run at 32MB. - * Just ignore whatever user passed. - */ - RELOC(prom_crashk_base) = 0x2000000; - if (*opt == '@') { - prom_printf("Warning: PPC64 kdump kernel always runs " - "at 32 MB\n"); - } - } -#endif } #ifdef CONFIG_PPC_PSERIES /* - * To tell the firmware what our capabilities are, we have to pass - * it a fake 32-bit ELF header containing a couple of PT_NOTE sections - * that contain structures that contain the actual values. + * There are two methods for telling firmware what our capabilities are. + * Newer machines have an "ibm,client-architecture-support" method on the + * root node. For older machines, we have to call the "process-elf-header" + * method in the /packages/elf-loader node, passing it a fake 32-bit + * ELF header containing a couple of PT_NOTE sections that contain + * structures that contain various information. */ + +/* + * New method - extensible architecture description vector. + * + * Because the description vector contains a mix of byte and word + * values, we declare it as an unsigned char array, and use this + * macro to put word values in. + */ +#define W(x) ((x) >> 24) & 0xff, ((x) >> 16) & 0xff, \ + ((x) >> 8) & 0xff, (x) & 0xff + +/* Option vector bits - generic bits in byte 1 */ +#define OV_IGNORE 0x80 /* ignore this vector */ +#define OV_CESSATION_POLICY 0x40 /* halt if unsupported option present*/ + +/* Option vector 1: processor architectures supported */ +#define OV1_PPC_2_00 0x80 /* set if we support PowerPC 2.00 */ +#define OV1_PPC_2_01 0x40 /* set if we support PowerPC 2.01 */ +#define OV1_PPC_2_02 0x20 /* set if we support PowerPC 2.02 */ +#define OV1_PPC_2_03 0x10 /* set if we support PowerPC 2.03 */ +#define OV1_PPC_2_04 0x08 /* set if we support PowerPC 2.04 */ +#define OV1_PPC_2_05 0x04 /* set if we support PowerPC 2.05 */ + +/* Option vector 2: Open Firmware options supported */ +#define OV2_REAL_MODE 0x20 /* set if we want OF in real mode */ + +/* Option vector 3: processor options supported */ +#define OV3_FP 0x80 /* floating point */ +#define OV3_VMX 0x40 /* VMX/Altivec */ + +/* Option vector 5: PAPR/OF options supported */ +#define OV5_LPAR 0x80 /* logical partitioning supported */ +#define OV5_SPLPAR 0x40 /* shared-processor LPAR supported */ +/* ibm,dynamic-reconfiguration-memory property supported */ +#define OV5_DRCONF_MEMORY 0x20 +#define OV5_LARGE_PAGES 0x10 /* large pages supported */ + +/* + * The architecture vector has an array of PVR mask/value pairs, + * followed by # option vectors - 1, followed by the option vectors. + */ +static unsigned char ibm_architecture_vec[] = { + W(0xfffe0000), W(0x003a0000), /* POWER5/POWER5+ */ + W(0xffff0000), W(0x003e0000), /* POWER6 */ + W(0xfffffffe), W(0x0f000001), /* all 2.04-compliant and earlier */ + 5 - 1, /* 5 option vectors */ + + /* option vector 1: processor architectures supported */ + 3 - 1, /* length */ + 0, /* don't ignore, don't halt */ + OV1_PPC_2_00 | OV1_PPC_2_01 | OV1_PPC_2_02 | OV1_PPC_2_03 | + OV1_PPC_2_04 | OV1_PPC_2_05, + + /* option vector 2: Open Firmware options supported */ + 34 - 1, /* length */ + OV2_REAL_MODE, + 0, 0, + W(0xffffffff), /* real_base */ + W(0xffffffff), /* real_size */ + W(0xffffffff), /* virt_base */ + W(0xffffffff), /* virt_size */ + W(0xffffffff), /* load_base */ + W(64), /* 128MB min RMA */ + W(0xffffffff), /* full client load */ + 0, /* min RMA percentage of total RAM */ + 48, /* max log_2(hash table size) */ + + /* option vector 3: processor options supported */ + 3 - 1, /* length */ + 0, /* don't ignore, don't halt */ + OV3_FP | OV3_VMX, + + /* option vector 4: IBM PAPR implementation */ + 2 - 1, /* length */ + 0, /* don't halt */ + + /* option vector 5: PAPR/OF options */ + 3 - 1, /* length */ + 0, /* don't ignore, don't halt */ + OV5_LPAR | OV5_SPLPAR | OV5_LARGE_PAGES, +}; + +/* Old method - ELF header with PT_NOTE sections */ static struct fake_elf { Elf32_Ehdr elfhdr; Elf32_Phdr phdr[2]; @@ -728,8 +768,27 @@ static struct fake_elf { static void __init prom_send_capabilities(void) { - ihandle elfloader; + ihandle elfloader, root; + prom_arg_t ret; + + root = call_prom("open", 1, 1, ADDR("/")); + if (root != 0) { + /* try calling the ibm,client-architecture-support method */ + if (call_prom_ret("call-method", 3, 2, &ret, + ADDR("ibm,client-architecture-support"), + root, + ADDR(ibm_architecture_vec)) == 0) { + /* the call exists... */ + if (ret) + prom_printf("WARNING: ibm,client-architecture" + "-support call FAILED!\n"); + call_prom("close", 1, 0, root); + return; + } + call_prom("close", 1, 0, root); + } + /* no ibm,client-architecture-support call, try the old way */ elfloader = call_prom("open", 1, 1, ADDR("/packages/elf-loader")); if (elfloader == 0) { prom_printf("couldn't open /packages/elf-loader\n"); @@ -1010,29 +1069,6 @@ static void __init prom_init_mem(void) RELOC(alloc_bottom) = PAGE_ALIGN(RELOC(prom_initrd_end)); } - /* - * If prom_memory_limit is set we reduce the upper limits *except* for - * alloc_top_high. This must be the real top of RAM so we can put - * TCE's up there. - */ - - RELOC(alloc_top_high) = RELOC(ram_top); - - if (RELOC(prom_memory_limit)) { - if (RELOC(prom_memory_limit) <= RELOC(alloc_bottom)) { - prom_printf("Ignoring mem=%x <= alloc_bottom.\n", - RELOC(prom_memory_limit)); - RELOC(prom_memory_limit) = 0; - } else if (RELOC(prom_memory_limit) >= RELOC(ram_top)) { - prom_printf("Ignoring mem=%x >= ram_top.\n", - RELOC(prom_memory_limit)); - RELOC(prom_memory_limit) = 0; - } else { - RELOC(ram_top) = RELOC(prom_memory_limit); - RELOC(rmo_top) = min(RELOC(rmo_top), RELOC(prom_memory_limit)); - } - } - /* * Setup our top alloc point, that is top of RMO or top of * segment 0 when running non-LPAR. @@ -1045,20 +1081,14 @@ static void __init prom_init_mem(void) RELOC(rmo_top) = RELOC(ram_top); RELOC(rmo_top) = min(0x30000000ul, RELOC(rmo_top)); RELOC(alloc_top) = RELOC(rmo_top); + RELOC(alloc_top_high) = RELOC(ram_top); prom_printf("memory layout at init:\n"); - prom_printf(" memory_limit : %x (16 MB aligned)\n", RELOC(prom_memory_limit)); prom_printf(" alloc_bottom : %x\n", RELOC(alloc_bottom)); prom_printf(" alloc_top : %x\n", RELOC(alloc_top)); prom_printf(" alloc_top_hi : %x\n", RELOC(alloc_top_high)); prom_printf(" rmo_top : %x\n", RELOC(rmo_top)); prom_printf(" ram_top : %x\n", RELOC(ram_top)); -#ifdef CONFIG_KEXEC - if (RELOC(prom_crashk_base)) { - prom_printf(" crashk_base : %x\n", RELOC(prom_crashk_base)); - prom_printf(" crashk_size : %x\n", RELOC(prom_crashk_size)); - } -#endif } @@ -1244,16 +1274,10 @@ static void __init prom_initialize_tce_table(void) reserve_mem(local_alloc_bottom, local_alloc_top - local_alloc_bottom); - if (RELOC(prom_memory_limit)) { - /* - * We align the start to a 16MB boundary so we can map - * the TCE area using large pages if possible. - * The end should be the top of RAM so no need to align it. - */ - RELOC(prom_tce_alloc_start) = _ALIGN_DOWN(local_alloc_bottom, - 0x1000000); - RELOC(prom_tce_alloc_end) = local_alloc_top; - } + /* These are only really needed if there is a memory limit in + * effect, but we don't know so export them always. */ + RELOC(prom_tce_alloc_start) = local_alloc_bottom; + RELOC(prom_tce_alloc_end) = local_alloc_top; /* Flag the first invalid entry */ prom_debug("ending prom_initialize_tce_table\n"); @@ -1518,6 +1542,15 @@ static int __init prom_find_machine_type(void) if (strstr(p, RELOC("Power Macintosh")) || strstr(p, RELOC("MacRISC"))) return PLATFORM_POWERMAC; +#ifdef CONFIG_PPC64 + /* We must make sure we don't detect the IBM Cell + * blades as pSeries due to some firmware issues, + * so we do it here. + */ + if (strstr(p, RELOC("IBM,CBEA")) || + strstr(p, RELOC("IBM,CPBW-1.0"))) + return PLATFORM_GENERIC; +#endif /* CONFIG_PPC64 */ i += sl + 1; } } @@ -1528,12 +1561,11 @@ static int __init prom_find_machine_type(void) * non-IBM designs ! * - it has /rtas */ - len = prom_getprop(_prom->root, "model", + len = prom_getprop(_prom->root, "device_type", compat, sizeof(compat)-1); if (len <= 0) return PLATFORM_GENERIC; - compat[len] = 0; - if (strcmp(compat, "chrp")) + if (strcmp(compat, RELOC("chrp"))) return PLATFORM_GENERIC; /* Default to pSeries. We need to know if we are running LPAR */ @@ -1928,11 +1960,7 @@ static void __init flatten_device_tree(void) /* Version 16 is not backward compatible */ hdr->last_comp_version = 0x10; - /* Reserve the whole thing and copy the reserve map in, we - * also bump mem_reserve_cnt to cause further reservations to - * fail since it's too late. - */ - reserve_mem(RELOC(dt_header_start), hdr->totalsize); + /* Copy the reserve map in */ memcpy(rsvmap, RELOC(mem_reserve_map), sizeof(mem_reserve_map)); #ifdef DEBUG_PROM @@ -1945,6 +1973,9 @@ static void __init flatten_device_tree(void) RELOC(mem_reserve_map)[i].size); } #endif + /* Bump mem_reserve_cnt to cause further reservations to fail + * since it's too late. + */ RELOC(mem_reserve_cnt) = MEM_RESERVE_MAP_SIZE; prom_printf("Device tree strings 0x%x -> 0x%x\n", @@ -1954,10 +1985,45 @@ static void __init flatten_device_tree(void) } - -static void __init fixup_device_tree(void) +#ifdef CONFIG_PPC_MAPLE +/* PIBS Version 1.05.0000 04/26/2005 has an incorrect /ht/isa/ranges property. + * The values are bad, and it doesn't even have the right number of cells. */ +static void __init fixup_device_tree_maple(void) { + phandle isa; + u32 isa_ranges[6]; + + isa = call_prom("finddevice", 1, 1, ADDR("/ht@0/isa@4")); + if (!PHANDLE_VALID(isa)) + return; + + if (prom_getprop(isa, "ranges", isa_ranges, sizeof(isa_ranges)) + == PROM_ERROR) + return; + + if (isa_ranges[0] != 0x1 || + isa_ranges[1] != 0xf4000000 || + isa_ranges[2] != 0x00010000) + return; + + prom_printf("fixing up bogus ISA range on Maple...\n"); + + isa_ranges[0] = 0x1; + isa_ranges[1] = 0x0; + isa_ranges[2] = 0x01002000; /* IO space; PCI device = 4 */ + isa_ranges[3] = 0x0; + isa_ranges[4] = 0x0; + isa_ranges[5] = 0x00010000; + prom_setprop(isa, "/ht@0/isa@4", "ranges", + isa_ranges, sizeof(isa_ranges)); +} +#else +#define fixup_device_tree_maple() +#endif + #if defined(CONFIG_PPC64) && defined(CONFIG_PPC_PMAC) +static void __init fixup_device_tree_pmac(void) +{ phandle u3, i2c, mpic; u32 u3_rev; u32 interrupts[2]; @@ -1994,9 +2060,16 @@ static void __init fixup_device_tree(void) parent = (u32)mpic; prom_setprop(i2c, "/u3@0,f8000000/i2c@f8001000", "interrupt-parent", &parent, sizeof(parent)); -#endif } +#else +#define fixup_device_tree_pmac() +#endif +static void __init fixup_device_tree(void) +{ + fixup_device_tree_maple(); + fixup_device_tree_pmac(); +} static void __init prom_find_boot_cpu(void) { @@ -2125,10 +2198,6 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4, */ prom_init_mem(); -#ifdef CONFIG_KEXEC - if (RELOC(prom_crashk_base)) - reserve_mem(RELOC(prom_crashk_base), RELOC(prom_crashk_size)); -#endif /* * Determine which cpu is actually running right _now_ */ @@ -2162,10 +2231,6 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4, /* * Fill in some infos for use by the kernel later on */ - if (RELOC(prom_memory_limit)) - prom_setprop(_prom->chosen, "/chosen", "linux,memory-limit", - &RELOC(prom_memory_limit), - sizeof(prom_memory_limit)); #ifdef CONFIG_PPC64 if (RELOC(ppc64_iommu_off)) prom_setprop(_prom->chosen, "/chosen", "linux,iommu-off", @@ -2185,16 +2250,6 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4, } #endif -#ifdef CONFIG_KEXEC - if (RELOC(prom_crashk_base)) { - prom_setprop(_prom->chosen, "/chosen", "linux,crashkernel-base", - PTRRELOC(&prom_crashk_base), - sizeof(RELOC(prom_crashk_base))); - prom_setprop(_prom->chosen, "/chosen", "linux,crashkernel-size", - PTRRELOC(&prom_crashk_size), - sizeof(RELOC(prom_crashk_size))); - } -#endif /* * Fixup any known bugs in the device-tree */