diff options
Diffstat (limited to 'arch/s390/kernel/setup.c')
| -rw-r--r-- | arch/s390/kernel/setup.c | 61 |
1 files changed, 30 insertions, 31 deletions
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index 3b2efc81f34e..38e751278bf7 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -2,7 +2,7 @@ * arch/s390/kernel/setup.c * * S390 version - * Copyright (C) IBM Corp. 1999,2010 + * Copyright (C) IBM Corp. 1999,2012 * Author(s): Hartmut Penner (hp@de.ibm.com), * Martin Schwidefsky (schwidefsky@de.ibm.com) * @@ -62,6 +62,8 @@ #include <asm/ebcdic.h> #include <asm/kvm_virtio.h> #include <asm/diag.h> +#include <asm/os_info.h> +#include "entry.h" long psw_kernel_bits = PSW_DEFAULT_KEY | PSW_MASK_BASE | PSW_ASC_PRIMARY | PSW_MASK_EA | PSW_MASK_BA; @@ -351,8 +353,9 @@ static void setup_addressing_mode(void) } } -static void __init -setup_lowcore(void) +void *restart_stack __attribute__((__section__(".data"))); + +static void __init setup_lowcore(void) { struct _lowcore *lc; @@ -363,7 +366,7 @@ setup_lowcore(void) lc = __alloc_bootmem_low(LC_PAGES * PAGE_SIZE, LC_PAGES * PAGE_SIZE, 0); lc->restart_psw.mask = psw_kernel_bits; lc->restart_psw.addr = - PSW_ADDR_AMODE | (unsigned long) psw_restart_int_handler; + PSW_ADDR_AMODE | (unsigned long) restart_int_handler; lc->external_new_psw.mask = psw_kernel_bits | PSW_MASK_DAT | PSW_MASK_MCHECK; lc->external_new_psw.addr = @@ -412,6 +415,24 @@ setup_lowcore(void) lc->last_update_timer = S390_lowcore.last_update_timer; lc->last_update_clock = S390_lowcore.last_update_clock; lc->ftrace_func = S390_lowcore.ftrace_func; + + restart_stack = __alloc_bootmem(ASYNC_SIZE, ASYNC_SIZE, 0); + restart_stack += ASYNC_SIZE; + + /* + * Set up PSW restart to call ipl.c:do_restart(). Copy the relevant + * restart data to the absolute zero lowcore. This is necesary if + * PSW restart is done on an offline CPU that has lowcore zero. + */ + lc->restart_stack = (unsigned long) restart_stack; + lc->restart_fn = (unsigned long) do_restart; + lc->restart_data = 0; + lc->restart_source = -1UL; + memcpy(&S390_lowcore.restart_stack, &lc->restart_stack, + 4*sizeof(unsigned long)); + copy_to_absolute_zero(&S390_lowcore.restart_psw, + &lc->restart_psw, sizeof(psw_t)); + set_prefix((u32)(unsigned long) lc); lowcore_ptr[0] = lc; } @@ -572,27 +593,6 @@ static void __init setup_memory_end(void) } } -void *restart_stack __attribute__((__section__(".data"))); - -/* - * Setup new PSW and allocate stack for PSW restart interrupt - */ -static void __init setup_restart_psw(void) -{ - psw_t psw; - - restart_stack = __alloc_bootmem(ASYNC_SIZE, ASYNC_SIZE, 0); - restart_stack += ASYNC_SIZE; - - /* - * Setup restart PSW for absolute zero lowcore. This is necesary - * if PSW restart is done on an offline CPU that has lowcore zero - */ - psw.mask = PSW_DEFAULT_KEY | PSW_MASK_BASE | PSW_MASK_EA | PSW_MASK_BA; - psw.addr = PSW_ADDR_AMODE | (unsigned long) psw_restart_int_handler; - copy_to_absolute_zero(&S390_lowcore.restart_psw, &psw, sizeof(psw)); -} - static void __init setup_vmcoreinfo(void) { #ifdef CONFIG_KEXEC @@ -747,7 +747,7 @@ static void __init reserve_crashkernel(void) { #ifdef CONFIG_CRASH_DUMP unsigned long long crash_base, crash_size; - char *msg; + char *msg = NULL; int rc; rc = parse_crashkernel(boot_command_line, memory_end, &crash_size, @@ -779,11 +779,11 @@ static void __init reserve_crashkernel(void) pr_info("Reserving %lluMB of memory at %lluMB " "for crashkernel (System RAM: %luMB)\n", crash_size >> 20, crash_base >> 20, memory_end >> 20); + os_info_crashkernel_add(crash_base, crash_size); #endif } -static void __init -setup_memory(void) +static void __init setup_memory(void) { unsigned long bootmap_size; unsigned long start_pfn, end_pfn; @@ -1014,8 +1014,7 @@ static void __init setup_hwcaps(void) * was printed. */ -void __init -setup_arch(char **cmdline_p) +void __init setup_arch(char **cmdline_p) { /* * print what head.S has found out about the machine @@ -1060,6 +1059,7 @@ setup_arch(char **cmdline_p) parse_early_param(); + os_info_init(); setup_ipl(); setup_memory_end(); setup_addressing_mode(); @@ -1068,7 +1068,6 @@ setup_arch(char **cmdline_p) setup_memory(); setup_resources(); setup_vmcoreinfo(); - setup_restart_psw(); setup_lowcore(); cpu_init(); |