void * __init iSeries_early_setup(void) { unsigned long phys_mem_size; /* Identify CPU type. This is done again by the common code later * on but calling this function multiple times is fine. */ identify_cpu(0, mfspr(SPRN_PVR)); initialise_paca(&boot_paca, 0); powerpc_firmware_features |= FW_FEATURE_ISERIES; powerpc_firmware_features |= FW_FEATURE_LPAR; #ifdef CONFIG_SMP /* On iSeries we know we can never have more than 64 cpus */ nr_cpu_ids = max(nr_cpu_ids, 64); #endif iSeries_fixup_klimit(); /* * Initialize the table which translate Linux physical addresses to * AS/400 absolute addresses */ phys_mem_size = build_iSeries_Memory_Map(); iSeries_get_cmdline(); return (void *) __pa(build_flat_dt(phys_mem_size)); }
void * __init iSeries_early_setup(void) { unsigned long phys_mem_size; /* Identify CPU type. This is done again by the common code later * on but calling this function multiple times is fine. */ identify_cpu(0, mfspr(SPRN_PVR)); powerpc_firmware_features |= FW_FEATURE_ISERIES; powerpc_firmware_features |= FW_FEATURE_LPAR; iSeries_fixup_klimit(); /* * Initialize the table which translate Linux physical addresses to * AS/400 absolute addresses */ phys_mem_size = build_iSeries_Memory_Map(); iSeries_get_cmdline(); return (void *) __pa(build_flat_dt(phys_mem_size)); }
/*static*/ void __init iSeries_init_early(void) { extern unsigned long memory_limit; DBG(" -> iSeries_init_early()\n"); ppcdbg_initialize(); #if defined(CONFIG_BLK_DEV_INITRD) /* * If the init RAM disk has been configured and there is * a non-zero starting address for it, set it up */ if (naca->xRamDisk) { initrd_start = (unsigned long)__va(naca->xRamDisk); initrd_end = initrd_start + naca->xRamDiskSize * PAGE_SIZE; initrd_below_start_ok = 1; // ramdisk in kernel space ROOT_DEV = Root_RAM0; if (((rd_size * 1024) / PAGE_SIZE) < naca->xRamDiskSize) rd_size = (naca->xRamDiskSize * PAGE_SIZE) / 1024; } else #endif /* CONFIG_BLK_DEV_INITRD */ { /* ROOT_DEV = MKDEV(VIODASD_MAJOR, 1); */ } iSeries_recal_tb = get_tb(); iSeries_recal_titan = HvCallXm_loadTod(); /* * Cache sizes must be initialized before hpte_init_iSeries is called * as the later need them for flush_icache_range() */ setup_iSeries_cache_sizes(); /* * Initialize the hash table management pointers */ hpte_init_iSeries(); /* * Initialize the DMA/TCE management */ tce_init_iSeries(); /* * Initialize the table which translate Linux physical addresses to * AS/400 absolute addresses */ build_iSeries_Memory_Map(); iSeries_get_cmdline(); /* Save unparsed command line copy for /proc/cmdline */ strlcpy(saved_command_line, cmd_line, COMMAND_LINE_SIZE); /* Parse early parameters, in particular mem=x */ parse_early_param(); if (memory_limit) { if (memory_limit < systemcfg->physicalMemorySize) systemcfg->physicalMemorySize = memory_limit; else { printk("Ignoring mem=%lu >= ram_top.\n", memory_limit); memory_limit = 0; } } /* Bolt kernel mappings for all of memory (or just a bit if we've got a limit) */ iSeries_bolt_kernel(0, systemcfg->physicalMemorySize); lmb_init(); lmb_add(0, systemcfg->physicalMemorySize); lmb_analyze(); lmb_reserve(0, __pa(klimit)); /* Initialize machine-dependency vectors */ #ifdef CONFIG_SMP smp_init_iSeries(); #endif if (itLpNaca.xPirEnvironMode == 0) piranha_simulator = 1; /* Associate Lp Event Queue 0 with processor 0 */ HvCallEvent_setLpEventQueueInterruptProc(0, 0); mf_init(); mf_initialized = 1; mb(); /* If we were passed an initrd, set the ROOT_DEV properly if the values * look sensible. If not, clear initrd reference. */ #ifdef CONFIG_BLK_DEV_INITRD if (initrd_start >= KERNELBASE && initrd_end >= KERNELBASE && initrd_end > initrd_start) ROOT_DEV = Root_RAM0; else initrd_start = initrd_end = 0; #endif /* CONFIG_BLK_DEV_INITRD */ DBG(" <- iSeries_init_early()\n"); }