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");
}
