X-Git-Url: https://git.kernelconcepts.de/?p=karo-tx-linux.git;a=blobdiff_plain;f=arch%2Fpowerpc%2Fplatforms%2Fiseries%2Fsetup.c;h=da26639190dbf5807333d184b8ae0a7051d449f1;hp=9a9e54b736d34f796f65f49b55cf7116dc94a3b3;hb=d7867959e7e928ab52ef204e2559937e5c9fc4ce;hpb=8875ccfb7a6bd69d95a4e889ab36adda06c30d9e diff --git a/arch/powerpc/platforms/iseries/setup.c b/arch/powerpc/platforms/iseries/setup.c index 9a9e54b736d3..da26639190db 100644 --- a/arch/powerpc/platforms/iseries/setup.c +++ b/arch/powerpc/platforms/iseries/setup.c @@ -27,6 +27,7 @@ #include #include #include +#include #include #include @@ -38,9 +39,8 @@ #include #include #include - +#include #include -#include #include #include #include @@ -49,10 +49,11 @@ #include #include #include -#include +#include #include -#include +#include +#include "naca.h" #include "setup.h" #include "irq.h" #include "vpd_areas.h" @@ -70,9 +71,7 @@ extern void hvlog(char *fmt, ...); #endif /* Function Prototypes */ -extern void ppcdbg_initialize(void); - -static void build_iSeries_Memory_Map(void); +static unsigned long build_iSeries_Memory_Map(void); static void iseries_shared_idle(void); static void iseries_dedicated_idle(void); #ifdef CONFIG_PCI @@ -85,7 +84,6 @@ static void iSeries_pci_final_fixup(void) { } int piranha_simulator; extern int rd_size; /* Defined in drivers/block/rd.c */ -extern unsigned long klimit; extern unsigned long embedded_sysmap_start; extern unsigned long embedded_sysmap_end; @@ -94,6 +92,8 @@ extern unsigned long iSeries_recal_titan; static int mf_initialized; +static unsigned long cmd_mem_limit; + struct MemoryBlock { unsigned long absStart; unsigned long absEnd; @@ -306,8 +306,6 @@ static void __init iSeries_init_early(void) ppc64_firmware_features = FW_FEATURE_ISERIES; - ppcdbg_initialize(); - ppc64_interrupt_controller = IC_ISERIES; #if defined(CONFIG_BLK_DEV_INITRD) @@ -317,11 +315,11 @@ static void __init iSeries_init_early(void) */ if (naca.xRamDisk) { initrd_start = (unsigned long)__va(naca.xRamDisk); - initrd_end = initrd_start + naca.xRamDiskSize * PAGE_SIZE; + initrd_end = initrd_start + naca.xRamDiskSize * HW_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; + if (((rd_size * 1024) / HW_PAGE_SIZE) < naca.xRamDiskSize) + rd_size = (naca.xRamDiskSize * HW_PAGE_SIZE) / 1024; } else #endif /* CONFIG_BLK_DEV_INITRD */ { @@ -341,23 +339,6 @@ static void __init iSeries_init_early(void) */ iommu_init_early_iSeries(); - 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; - } - } - /* Initialize machine-dependency vectors */ #ifdef CONFIG_SMP smp_init_iSeries(); @@ -421,9 +402,11 @@ void mschunks_alloc(unsigned long num_chunks) * a table used to translate Linux's physical addresses to these * absolute addresses. Absolute addresses are needed when * communicating with the hypervisor (e.g. to build HPT entries) + * + * Returns the physical memory size */ -static void __init build_iSeries_Memory_Map(void) +static unsigned long __init build_iSeries_Memory_Map(void) { u32 loadAreaFirstChunk, loadAreaLastChunk, loadAreaSize; u32 nextPhysChunk; @@ -484,13 +467,14 @@ static void __init build_iSeries_Memory_Map(void) */ hptFirstChunk = (u32)addr_to_chunk(HvCallHpt_getHptAddress()); hptSizePages = (u32)HvCallHpt_getHptPages(); - hptSizeChunks = hptSizePages >> (MSCHUNKS_CHUNK_SHIFT - PAGE_SHIFT); + hptSizeChunks = hptSizePages >> + (MSCHUNKS_CHUNK_SHIFT - HW_PAGE_SHIFT); hptLastChunk = hptFirstChunk + hptSizeChunks - 1; printk("HPT absolute addr = %016lx, size = %dK\n", chunk_to_addr(hptFirstChunk), hptSizeChunks * 256); - ppc64_pft_size = __ilog2(hptSizePages * PAGE_SIZE); + ppc64_pft_size = __ilog2(hptSizePages * HW_PAGE_SIZE); /* * The actual hashed page table is in the hypervisor, @@ -555,7 +539,7 @@ static void __init build_iSeries_Memory_Map(void) * which should be equal to * nextPhysChunk */ - systemcfg->physicalMemorySize = chunk_to_addr(nextPhysChunk); + return chunk_to_addr(nextPhysChunk); } /* @@ -563,8 +547,6 @@ static void __init build_iSeries_Memory_Map(void) */ static void __init iSeries_setup_arch(void) { - unsigned procIx = get_paca()->lppaca.dyn_hv_phys_proc_index; - if (get_paca()->lppaca.shared_proc) { ppc_md.idle_loop = iseries_shared_idle; printk(KERN_INFO "Using shared processor idle loop\n"); @@ -580,9 +562,6 @@ static void __init iSeries_setup_arch(void) itVpdAreas.xSlicMaxLogicalProcs); printk("Max physical processors = %d\n", itVpdAreas.xSlicMaxPhysicalProcs); - - systemcfg->processor = xIoHriProcessorVpd[procIx].xPVR; - printk("Processor version = %x\n", systemcfg->processor); } static void iSeries_show_cpuinfo(struct seq_file *m) @@ -643,7 +622,7 @@ static void __init iSeries_fixup_klimit(void) */ if (naca.xRamDisk) klimit = KERNELBASE + (u64)naca.xRamDisk + - (naca.xRamDiskSize * PAGE_SIZE); + (naca.xRamDiskSize * HW_PAGE_SIZE); else { /* * No ram disk was included - check and see if there @@ -711,20 +690,18 @@ static void iseries_shared_idle(void) if (hvlpevent_is_pending()) process_iSeries_events(); + preempt_enable_no_resched(); schedule(); + preempt_disable(); } } static void iseries_dedicated_idle(void) { - long oldval; + set_thread_flag(TIF_POLLING_NRFLAG); while (1) { - oldval = test_and_clear_thread_flag(TIF_NEED_RESCHED); - - if (!oldval) { - set_thread_flag(TIF_POLLING_NRFLAG); - + if (!need_resched()) { while (!need_resched()) { ppc64_runlatch_off(); HMT_low(); @@ -737,13 +714,12 @@ static void iseries_dedicated_idle(void) } HMT_medium(); - clear_thread_flag(TIF_POLLING_NRFLAG); - } else { - set_need_resched(); } ppc64_runlatch_on(); + preempt_enable_no_resched(); schedule(); + preempt_disable(); } } @@ -948,7 +924,7 @@ void dt_cpus(struct iseries_flat_dt *dt) dt_end_node(dt); } -void build_flat_dt(struct iseries_flat_dt *dt) +void build_flat_dt(struct iseries_flat_dt *dt, unsigned long phys_mem_size) { u64 tmp[2]; @@ -964,13 +940,15 @@ void build_flat_dt(struct iseries_flat_dt *dt) dt_prop_str(dt, "name", "memory"); dt_prop_str(dt, "device_type", "memory"); tmp[0] = 0; - tmp[1] = systemcfg->physicalMemorySize; + tmp[1] = phys_mem_size; dt_prop_u64_list(dt, "reg", tmp, 2); dt_end_node(dt); /* /chosen */ dt_start_node(dt, "chosen"); dt_prop_u32(dt, "linux,platform", PLATFORM_ISERIES_LPAR); + if (cmd_mem_limit) + dt_prop_u64(dt, "linux,memory-limit", cmd_mem_limit); dt_end_node(dt); dt_cpus(dt); @@ -982,15 +960,37 @@ void build_flat_dt(struct iseries_flat_dt *dt) void * __init iSeries_early_setup(void) { + unsigned long phys_mem_size; + iSeries_fixup_klimit(); /* * Initialize the table which translate Linux physical addresses to * AS/400 absolute addresses */ - build_iSeries_Memory_Map(); + phys_mem_size = build_iSeries_Memory_Map(); - build_flat_dt(&iseries_dt); + 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(); + + build_flat_dt(&iseries_dt, phys_mem_size); return (void *) __pa(&iseries_dt); } + +/* + * On iSeries we just parse the mem=X option from the command line. + * On pSeries it's a bit more complicated, see prom_init_mem() + */ +static int __init early_parsemem(char *p) +{ + if (p) + cmd_mem_limit = ALIGN(memparse(p, &p), PAGE_SIZE); + return 0; +} +early_param("mem", early_parsemem);