[S390] eliminate ipl_device from lowcore

[platform/kernel/linux-starfive.git] / arch / s390 / kernel / setup.c

diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index c5cfb61..91551ef 100644 (file)
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -74,9 +74,17 @@ EXPORT_SYMBOL(uaccess);
  * Machine setup..
  */
 unsigned int console_mode = 0;
+EXPORT_SYMBOL(console_mode);
+
 unsigned int console_devno = -1;
+EXPORT_SYMBOL(console_devno);
+
 unsigned int console_irq = -1;
+EXPORT_SYMBOL(console_irq);
+
 unsigned long machine_flags;
+EXPORT_SYMBOL(machine_flags);
+
 unsigned long elf_hwcap = 0;
 char elf_platform[ELF_PLATFORM_SIZE];
 
@@ -86,6 +94,10 @@ volatile int __cpu_logical_map[NR_CPUS]; /* logical cpu to cpu address */
 int __initdata memory_end_set;
 unsigned long __initdata memory_end;
 
+/* An array with a pointer to the lowcore of every CPU. */
+struct _lowcore *lowcore_ptr[NR_CPUS];
+EXPORT_SYMBOL(lowcore_ptr);
+
 /*
  * This is set up by the setup-routine at boot-time
  * for S390 need to find out, what we have to setup
@@ -109,13 +121,10 @@ static struct resource data_resource = {
  */
 void __cpuinit cpu_init(void)
 {
-        int addr = hard_smp_processor_id();
-
         /*
          * Store processor id in lowcore (used e.g. in timer_interrupt)
          */
-       get_cpu_id(&S390_lowcore.cpu_data.cpu_id);
-        S390_lowcore.cpu_data.cpu_addr = addr;
+       get_cpu_id(&S390_lowcore.cpu_id);
 
         /*
          * Force FPU initialization:
@@ -289,11 +298,7 @@ static int __init early_parse_mem(char *p)
 early_param("mem", early_parse_mem);
 
 #ifdef CONFIG_S390_SWITCH_AMODE
-#ifdef CONFIG_PGSTE
-unsigned int switch_amode = 1;
-#else
 unsigned int switch_amode = 0;
-#endif
 EXPORT_SYMBOL_GPL(switch_amode);
 
 static int set_amode_and_uaccess(unsigned long user_amode,
@@ -414,7 +419,6 @@ setup_lowcore(void)
                PSW_ADDR_AMODE | (unsigned long) mcck_int_handler;
        lc->io_new_psw.mask = psw_kernel_bits;
        lc->io_new_psw.addr = PSW_ADDR_AMODE | (unsigned long) io_int_handler;
-       lc->ipl_device = S390_lowcore.ipl_device;
        lc->clock_comparator = -1ULL;
        lc->kernel_stack = ((unsigned long) &init_thread_union) + THREAD_SIZE;
        lc->async_stack = (unsigned long)
@@ -434,6 +438,7 @@ setup_lowcore(void)
        lc->vdso_per_cpu_data = (unsigned long) &lc->paste[0];
 #endif
        set_prefix((u32)(unsigned long) lc);
+       lowcore_ptr[0] = lc;
 }
 
 static void __init
@@ -677,7 +682,6 @@ setup_memory(void)
 static void __init setup_hwcaps(void)
 {
        static const int stfl_bits[6] = { 0, 2, 7, 17, 19, 21 };
-       struct cpuinfo_S390 *cpuinfo = &S390_lowcore.cpu_data;
        unsigned long long facility_list_extended;
        unsigned int facility_list;
        int i;
@@ -723,7 +727,7 @@ static void __init setup_hwcaps(void)
        if (MACHINE_HAS_HPAGE)
                elf_hwcap |= 1UL << 7;
 
-       switch (cpuinfo->cpu_id.machine) {
+       switch (S390_lowcore.cpu_id.machine) {
        case 0x9672:
 #if !defined(CONFIG_64BIT)
        default:        /* Use "g5" as default for 31 bit kernels. */
@@ -816,7 +820,7 @@ setup_arch(char **cmdline_p)
        setup_lowcore();
 
         cpu_init();
-        __cpu_logical_map[0] = S390_lowcore.cpu_data.cpu_addr;
+       __cpu_logical_map[0] = stap();
        s390_init_cpu_topology();
 
        /*