/*
* Do some initial setup of the system. The parameters are those which
* were passed in from the bootloader.
*/
void __init setup_system(void)
{
DBG(" -> setup_system()\n");
#ifdef CONFIG_PPC_ISERIES
/* pSeries systems are identified in prom.c via OF. */
if (itLpNaca.xLparInstalled == 1)
systemcfg->platform = PLATFORM_ISERIES_LPAR;
ppc_md.init_early();
#else /* CONFIG_PPC_ISERIES */
/*
* Unflatten the device-tree passed by prom_init or kexec
*/
unflatten_device_tree();
/*
* Fill the naca & systemcfg structures with informations
* retreived from the device-tree. Need to be called before
* finish_device_tree() since the later requires some of the
* informations filled up here to properly parse the interrupt
* tree.
* It also sets up the cache line sizes which allows to call
* routines like flush_icache_range (used by the hash init
* later on).
*/
initialize_naca();
#ifdef CONFIG_PPC_PSERIES
/*
* Initialize RTAS if available
*/
rtas_initialize();
#endif /* CONFIG_PPC_PSERIES */
/*
* Check if we have an initrd provided via the device-tree
*/
check_for_initrd();
/*
* Do some platform specific early initializations, that includes
* setting up the hash table pointers. It also sets up some interrupt-mapping
* related options that will be used by finish_device_tree()
*/
ppc_md.init_early();
/*
* "Finish" the device-tree, that is do the actual parsing of
* some of the properties like the interrupt map
*/
finish_device_tree();
/*
* Initialize xmon
*/
#ifdef CONFIG_XMON_DEFAULT
xmon_init();
#endif
/*
* Register early console
*/
early_console_initialized = 1;
register_console(&udbg_console);
/* Save unparsed command line copy for /proc/cmdline */
strlcpy(saved_command_line, cmd_line, COMMAND_LINE_SIZE);
parse_early_param();
#endif /* !CONFIG_PPC_ISERIES */
#if defined(CONFIG_SMP) && !defined(CONFIG_PPC_ISERIES)
/*
* iSeries has already initialized the cpu maps at this point.
*/
setup_cpu_maps();
/* Release secondary cpus out of their spinloops at 0x60 now that
* we can map physical -> logical CPU ids
*/
smp_release_cpus();
#endif /* defined(CONFIG_SMP) && !defined(CONFIG_PPC_ISERIES) */
printk("Starting Linux PPC64 %s\n", UTS_RELEASE);
printk("-----------------------------------------------------\n");
printk("naca = 0x%p\n", naca);
printk("naca->pftSize = 0x%lx\n", naca->pftSize);
printk("naca->debug_switch = 0x%lx\n", naca->debug_switch);
printk("naca->interrupt_controller = 0x%ld\n", naca->interrupt_controller);
printk("systemcfg = 0x%p\n", systemcfg);
printk("systemcfg->platform = 0x%x\n", systemcfg->platform);
printk("systemcfg->processorCount = 0x%lx\n", systemcfg->processorCount);
printk("systemcfg->physicalMemorySize = 0x%lx\n", systemcfg->physicalMemorySize);
printk("systemcfg->dCacheL1LineSize = 0x%x\n", systemcfg->dCacheL1LineSize);
printk("systemcfg->iCacheL1LineSize = 0x%x\n", systemcfg->iCacheL1LineSize);
printk("htab_data.htab = 0x%p\n", htab_data.htab);
printk("htab_data.num_ptegs = 0x%lx\n", htab_data.htab_num_ptegs);
printk("-----------------------------------------------------\n");
mm_init_ppc64();
DBG(" <- setup_system()\n");
}
/*
* Do some initial setup of the system. The parameters are those which
* were passed in from the bootloader.
*/
void __init setup_system(void)
{
DBG(" -> setup_system()\n");
#ifdef CONFIG_KEXEC
kdump_move_device_tree();
#endif
/*
* Unflatten the device-tree passed by prom_init or kexec
*/
unflatten_device_tree();
#ifdef CONFIG_KEXEC
kexec_setup(); /* requires unflattened device tree. */
#endif
/*
* Fill the ppc64_caches & systemcfg structures with informations
* retrieved from the device-tree. Need to be called before
* finish_device_tree() since the later requires some of the
* informations filled up here to properly parse the interrupt
* tree.
* It also sets up the cache line sizes which allows to call
* routines like flush_icache_range (used by the hash init
* later on).
*/
initialize_cache_info();
#ifdef CONFIG_PPC_RTAS
/*
* Initialize RTAS if available
*/
rtas_initialize();
#endif /* CONFIG_PPC_RTAS */
/*
* Check if we have an initrd provided via the device-tree
*/
check_for_initrd();
/*
* Do some platform specific early initializations, that includes
* setting up the hash table pointers. It also sets up some interrupt-mapping
* related options that will be used by finish_device_tree()
*/
ppc_md.init_early();
/*
* We can discover serial ports now since the above did setup the
* hash table management for us, thus ioremap works. We do that early
* so that further code can be debugged
*/
find_legacy_serial_ports();
/*
* "Finish" the device-tree, that is do the actual parsing of
* some of the properties like the interrupt map
*/
finish_device_tree();
/*
* Initialize xmon
*/
#ifdef CONFIG_XMON_DEFAULT
xmon_init(1);
#endif
/*
* Register early console
*/
register_early_udbg_console();
/* Save unparsed command line copy for /proc/cmdline */
strlcpy(saved_command_line, cmd_line, COMMAND_LINE_SIZE);
parse_early_param();
check_smt_enabled();
smp_setup_cpu_maps();
#ifdef CONFIG_SMP
/* Release secondary cpus out of their spinloops at 0x60 now that
* we can map physical -> logical CPU ids
*/
smp_release_cpus();
#endif
printk("Starting Linux PPC64 %s\n", system_utsname.version);
printk("-----------------------------------------------------\n");
printk("ppc64_pft_size = 0x%lx\n", ppc64_pft_size);
printk("ppc64_interrupt_controller = 0x%ld\n",
ppc64_interrupt_controller);
printk("platform = 0x%x\n", _machine);
printk("physicalMemorySize = 0x%lx\n", lmb_phys_mem_size());
printk("ppc64_caches.dcache_line_size = 0x%x\n",
ppc64_caches.dline_size);
printk("ppc64_caches.icache_line_size = 0x%x\n",
ppc64_caches.iline_size);
printk("htab_address = 0x%p\n", htab_address);
printk("htab_hash_mask = 0x%lx\n", htab_hash_mask);
#if PHYSICAL_START > 0
printk("physical_start = 0x%x\n", PHYSICAL_START);
#endif
printk("-----------------------------------------------------\n");
mm_init_ppc64();
DBG(" <- setup_system()\n");
}