X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=arch%2Fpowerpc%2Fkernel%2Fprom_init.c;h=5f306c4946e542bedf94001cc3eb0372032dba95;hb=948e78c3fc9c799b3f9b6c683b83c665942e6bbe;hp=b72849ac7db39af14fe1547571da83066cdc3d77;hpb=7d2f6075f992d33c7be829c3638b8cb72b782b19;p=safe%2Fjmp%2Flinux-2.6 diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c index b72849a..5f306c4 100644 --- a/arch/powerpc/kernel/prom_init.c +++ b/arch/powerpc/kernel/prom_init.c @@ -44,10 +44,7 @@ #include #include -#ifdef CONFIG_LOGO_LINUX_CLUT224 #include -extern const struct linux_logo logo_linux_clut224; -#endif /* * Properties whose value is longer than this get excluded from our @@ -193,6 +190,8 @@ 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; @@ -555,9 +554,8 @@ unsigned long prom_memparse(const char *ptr, const char **retptr) static void __init early_cmdline_parse(void) { struct prom_t *_prom = &RELOC(prom); -#ifdef CONFIG_PPC64 const char *opt; -#endif + char *p; int l = 0; @@ -585,6 +583,15 @@ static void __init early_cmdline_parse(void) RELOC(prom_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_PPC_PSERIES @@ -647,6 +654,9 @@ static void __init early_cmdline_parse(void) #define OV5_CMO 0x00 #endif +/* Option Vector 6: IBM PAPR hints */ +#define OV6_LINUX 0x02 /* Linux is our OS */ + /* * The architecture vector has an array of PVR mask/value pairs, * followed by # option vectors - 1, followed by the option vectors. @@ -658,7 +668,7 @@ static unsigned char ibm_architecture_vec[] = { W(0xffffffff), W(0x0f000003), /* all 2.06-compliant */ W(0xffffffff), W(0x0f000002), /* all 2.05-compliant */ W(0xfffffffe), W(0x0f000001), /* all 2.04-compliant and earlier */ - 5 - 1, /* 5 option vectors */ + 6 - 1, /* 6 option vectors */ /* option vector 1: processor architectures supported */ 3 - 2, /* length */ @@ -675,7 +685,7 @@ static unsigned char ibm_architecture_vec[] = { W(0xffffffff), /* virt_base */ W(0xffffffff), /* virt_size */ W(0xffffffff), /* load_base */ - W(64), /* 128MB min RMA */ + W(64), /* 64MB min RMA */ W(0xffffffff), /* full client load */ 0, /* min RMA percentage of total RAM */ 48, /* max log_2(hash table size) */ @@ -690,12 +700,29 @@ static unsigned char ibm_architecture_vec[] = { 0, /* don't halt */ /* option vector 5: PAPR/OF options */ - 5 - 2, /* length */ + 13 - 2, /* length */ 0, /* don't ignore, don't halt */ OV5_LPAR | OV5_SPLPAR | OV5_LARGE_PAGES | OV5_DRCONF_MEMORY | OV5_DONATE_DEDICATE_CPU | OV5_MSI, 0, OV5_CMO, + 0, + 0, + 0, + 0, + /* WARNING: The offset of the "number of cores" field below + * must match by the macro below. Update the definition if + * the structure layout changes. + */ +#define IBM_ARCH_VEC_NRCORES_OFFSET 100 + W(NR_CPUS), /* number of cores supported */ + + /* option vector 6: IBM PAPR hints */ + 4 - 2, /* length */ + 0, + 0, + OV6_LINUX, + }; /* Old method - ELF header with PT_NOTE sections */ @@ -785,26 +812,86 @@ static struct fake_elf { } }; +static int __init prom_count_smt_threads(void) +{ + phandle node; + char type[64]; + unsigned int plen; + + /* Pick up th first CPU node we can find */ + for (node = 0; prom_next_node(&node); ) { + type[0] = 0; + prom_getprop(node, "device_type", type, sizeof(type)); + + if (strcmp(type, RELOC("cpu"))) + continue; + /* + * There is an entry for each smt thread, each entry being + * 4 bytes long. All cpus should have the same number of + * smt threads, so return after finding the first. + */ + plen = prom_getproplen(node, "ibm,ppc-interrupt-server#s"); + if (plen == PROM_ERROR) + break; + plen >>= 2; + prom_debug("Found 0x%x smt threads per core\n", (unsigned long)plen); + + /* Sanity check */ + if (plen < 1 || plen > 64) { + prom_printf("Threads per core 0x%x out of bounds, assuming 1\n", + (unsigned long)plen); + return 1; + } + return plen; + } + prom_debug("No threads found, assuming 1 per core\n"); + + return 1; + +} + + static void __init prom_send_capabilities(void) { ihandle elfloader, root; prom_arg_t ret; + u32 *cores; root = call_prom("open", 1, 1, ADDR("/")); if (root != 0) { + /* We need to tell the FW about the number of cores we support. + * + * To do that, we count the number of threads on the first core + * (we assume this is the same for all cores) and use it to + * divide NR_CPUS. + */ + cores = (u32 *)PTRRELOC(&ibm_architecture_vec[IBM_ARCH_VEC_NRCORES_OFFSET]); + if (*cores != NR_CPUS) { + prom_printf("WARNING ! " + "ibm_architecture_vec structure inconsistent: 0x%x !\n", + *cores); + } else { + *cores = NR_CPUS / prom_count_smt_threads(); + prom_printf("Max number of cores passed to firmware: 0x%x\n", + (unsigned long)*cores); + } + /* try calling the ibm,client-architecture-support method */ + prom_printf("Calling ibm,client-architecture-support..."); 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" + prom_printf("\nWARNING: ibm,client-architecture" "-support call FAILED!\n"); call_prom("close", 1, 0, root); + prom_printf(" done\n"); return; } call_prom("close", 1, 0, root); + prom_printf(" not implemented\n"); } /* no ibm,client-architecture-support call, try the old way */ @@ -1089,6 +1176,29 @@ static void __init prom_init_mem(void) } /* + * 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. * Some RS64 machines have buggy firmware where claims up at @@ -1103,6 +1213,7 @@ static void __init prom_init_mem(void) 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)); @@ -1144,7 +1255,7 @@ static void __init prom_instantiate_rtas(void) return; } - prom_printf("instantiating rtas at 0x%x ...", base); + prom_printf("instantiating rtas at 0x%x...", base); if (call_prom_ret("call-method", 3, 2, &entry, ADDR("instantiate-rtas"), @@ -1271,7 +1382,7 @@ static void __init prom_initialize_tce_table(void) /* Initialize the table to have a one-to-one mapping * over the allocated size. */ - tce_entryp = (unsigned long *)base; + tce_entryp = (u64 *)base; for (i = 0; i < (minsize >> 3) ;tce_entryp++, i++) { tce_entry = (i << PAGE_SHIFT); tce_entry |= 0x3; @@ -1321,10 +1432,6 @@ static void __init prom_initialize_tce_table(void) * * -- Cort */ -extern void __secondary_hold(void); -extern unsigned long __secondary_hold_spinloop; -extern unsigned long __secondary_hold_acknowledge; - /* * We want to reference the copy of __secondary_hold_* in the * 0 - 0x100 address range @@ -1342,13 +1449,7 @@ static void __init prom_hold_cpus(void) = (void *) LOW_ADDR(__secondary_hold_spinloop); unsigned long *acknowledge = (void *) LOW_ADDR(__secondary_hold_acknowledge); -#ifdef CONFIG_PPC64 - /* __secondary_hold is actually a descriptor, not the text address */ - unsigned long secondary_hold - = __pa(*PTRRELOC((unsigned long *)__secondary_hold)); -#else unsigned long secondary_hold = LOW_ADDR(__secondary_hold); -#endif prom_debug("prom_hold_cpus: start...\n"); prom_debug(" 1) spinloop = 0x%x\n", (unsigned long)spinloop); @@ -1562,7 +1663,7 @@ static int __init prom_find_machine_type(void) return PLATFORM_GENERIC; x = prom_getproplen(rtas, "ibm,hypertas-functions"); if (x != PROM_ERROR) { - prom_printf("Hypertas detected, assuming LPAR !\n"); + prom_debug("Hypertas detected, assuming LPAR !\n"); return PLATFORM_PSERIES_LPAR; } return PLATFORM_PSERIES; @@ -1611,7 +1712,7 @@ static void __init prom_check_displays(void) }; const unsigned char *clut; - prom_printf("Looking for displays\n"); + prom_debug("Looking for displays\n"); for (node = 0; prom_next_node(&node); ) { memset(type, 0, sizeof(type)); prom_getprop(node, "device_type", type, sizeof(type)); @@ -1629,7 +1730,7 @@ static void __init prom_check_displays(void) if (call_prom("package-to-path", 3, 1, node, path, PROM_SCRATCH_SIZE-10) == PROM_ERROR) continue; - prom_printf("found display : %s, opening ... ", path); + prom_printf("found display : %s, opening... ", path); ih = call_prom("open", 1, 1, path); if (ih == 0) { @@ -2015,8 +2116,47 @@ static void __init fixup_device_tree_maple(void) prom_setprop(isa, name, "ranges", isa_ranges, sizeof(isa_ranges)); } + +#define CPC925_MC_START 0xf8000000 +#define CPC925_MC_LENGTH 0x1000000 +/* The values for memory-controller don't have right number of cells */ +static void __init fixup_device_tree_maple_memory_controller(void) +{ + phandle mc; + u32 mc_reg[4]; + char *name = "/hostbridge@f8000000"; + struct prom_t *_prom = &RELOC(prom); + u32 ac, sc; + + mc = call_prom("finddevice", 1, 1, ADDR(name)); + if (!PHANDLE_VALID(mc)) + return; + + if (prom_getproplen(mc, "reg") != 8) + return; + + prom_getprop(_prom->root, "#address-cells", &ac, sizeof(ac)); + prom_getprop(_prom->root, "#size-cells", &sc, sizeof(sc)); + if ((ac != 2) || (sc != 2)) + return; + + if (prom_getprop(mc, "reg", mc_reg, sizeof(mc_reg)) == PROM_ERROR) + return; + + if (mc_reg[0] != CPC925_MC_START || mc_reg[1] != CPC925_MC_LENGTH) + return; + + prom_printf("Fixing up bogus hostbridge on Maple...\n"); + + mc_reg[0] = 0x0; + mc_reg[1] = CPC925_MC_START; + mc_reg[2] = 0x0; + mc_reg[3] = CPC925_MC_LENGTH; + prom_setprop(mc, name, "reg", mc_reg, sizeof(mc_reg)); +} #else #define fixup_device_tree_maple() +#define fixup_device_tree_maple_memory_controller() #endif #ifdef CONFIG_PPC_CHRP @@ -2257,6 +2397,7 @@ static void __init fixup_device_tree_efika(void) static void __init fixup_device_tree(void) { fixup_device_tree_maple(); + fixup_device_tree_maple_memory_controller(); fixup_device_tree_chrp(); fixup_device_tree_pmac(); fixup_device_tree_efika(); @@ -2315,13 +2456,14 @@ static void __init prom_check_initrd(unsigned long r3, unsigned long r4) unsigned long __init prom_init(unsigned long r3, unsigned long r4, unsigned long pp, - unsigned long r6, unsigned long r7) + unsigned long r6, unsigned long r7, + unsigned long kbase) { struct prom_t *_prom; unsigned long hdr; - unsigned long offset = reloc_offset(); #ifdef CONFIG_PPC32 + unsigned long offset = reloc_offset(); reloc_got2(offset); #endif @@ -2349,15 +2491,19 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4, */ prom_init_stdout(); + prom_printf("Preparing to boot %s", RELOC(linux_banner)); + /* * Get default machine type. At this point, we do not differentiate * between pSeries SMP and pSeries LPAR */ RELOC(of_platform) = prom_find_machine_type(); +#ifndef CONFIG_RELOCATABLE /* Bail if this is a kdump kernel. */ if (PHYSICAL_START > 0) prom_panic("Error: You can't boot a kdump kernel from OF!\n"); +#endif /* * Check for an initrd @@ -2377,7 +2523,7 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4, * Copy the CPU hold code */ if (RELOC(of_platform) != PLATFORM_POWERMAC) - copy_and_flush(0, KERNELBASE + offset, 0x100, 0); + copy_and_flush(0, kbase, 0x100, 0); /* * Do early parsing of command line @@ -2422,6 +2568,10 @@ 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(prom_iommu_off)) prom_setprop(_prom->chosen, "/chosen", "linux,iommu-off", @@ -2449,7 +2599,7 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4, /* * Now finally create the flattened device-tree */ - prom_printf("copying OF device tree ...\n"); + prom_printf("copying OF device tree...\n"); flatten_device_tree(); /* @@ -2464,7 +2614,7 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4, * Call OF "quiesce" method to shut down pending DMA's from * devices etc... */ - prom_printf("Calling quiesce ...\n"); + prom_printf("Calling quiesce...\n"); call_prom("quiesce", 0, 0); /* @@ -2480,7 +2630,7 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4, reloc_got2(-offset); #endif - __start(hdr, KERNELBASE + offset, 0); + __start(hdr, kbase, 0); return 0; }