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authorHeiko Carstens <heiko.carstens@de.ibm.com>2007-02-05 21:18:37 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2007-02-05 21:18:37 +0100
commitab14de6c37fae22911ba99f4171613e6d758050b (patch)
tree7545169fe9d64a82616ae37f2b6c1a420c77f30f /arch/s390/kernel/setup.c
parent31ee4b2f40994e8b21691f85cdd4052551a789b7 (diff)
[S390] Convert memory detection into C code.
Hopefully this will make it more maintainable and less error prone. Code makes use of search_exception_tables(). Since it calls this function before the kernel exeception table is sorted, there is an early call to sort_main_extable(). This way it's easy to use the already present infrastructure of fixup sections. Also this would allows to easily convert the rest of head[31|64].S into C code. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/setup.c')
-rw-r--r--arch/s390/kernel/setup.c134
1 files changed, 0 insertions, 134 deletions
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 2fa866f6f71..f73a1152821 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -284,140 +284,6 @@ static void __init conmode_default(void)
}
}
-/*
- * Create a Kernel NSS if the SAVESYS= parameter is defined
-*/
-#define DEFSYS_CMD_SIZE 96
-#define SAVESYS_CMD_SIZE 32
-
-extern int _eshared;
-char kernel_nss_name[NSS_NAME_SIZE + 1];
-
-#ifdef CONFIG_SHARED_KERNEL
-static __init void create_kernel_nss(void)
-{
- unsigned int i, stext_pfn, eshared_pfn, end_pfn, min_size;
-#ifdef CONFIG_BLK_DEV_INITRD
- unsigned int sinitrd_pfn, einitrd_pfn;
-#endif
- int response;
- char *savesys_ptr;
- char upper_command_line[COMMAND_LINE_SIZE];
- char defsys_cmd[DEFSYS_CMD_SIZE];
- char savesys_cmd[SAVESYS_CMD_SIZE];
-
- /* Do nothing if we are not running under VM */
- if (!MACHINE_IS_VM)
- return;
-
- /* Convert COMMAND_LINE to upper case */
- for (i = 0; i < strlen(COMMAND_LINE); i++)
- upper_command_line[i] = toupper(COMMAND_LINE[i]);
-
- savesys_ptr = strstr(upper_command_line, "SAVESYS=");
-
- if (!savesys_ptr)
- return;
-
- savesys_ptr += 8; /* Point to the beginning of the NSS name */
- for (i = 0; i < NSS_NAME_SIZE; i++) {
- if (savesys_ptr[i] == ' ' || savesys_ptr[i] == '\0')
- break;
- kernel_nss_name[i] = savesys_ptr[i];
- }
-
- stext_pfn = PFN_DOWN(__pa(&_stext));
- eshared_pfn = PFN_DOWN(__pa(&_eshared));
- end_pfn = PFN_UP(__pa(&_end));
- min_size = end_pfn << 2;
-
- sprintf(defsys_cmd, "DEFSYS %s 00000-%.5X EW %.5X-%.5X SR %.5X-%.5X",
- kernel_nss_name, stext_pfn - 1, stext_pfn, eshared_pfn - 1,
- eshared_pfn, end_pfn);
-
-#ifdef CONFIG_BLK_DEV_INITRD
- if (INITRD_START && INITRD_SIZE) {
- sinitrd_pfn = PFN_DOWN(__pa(INITRD_START));
- einitrd_pfn = PFN_UP(__pa(INITRD_START + INITRD_SIZE));
- min_size = einitrd_pfn << 2;
- sprintf(defsys_cmd, "%s EW %.5X-%.5X", defsys_cmd,
- sinitrd_pfn, einitrd_pfn);
- }
-#endif
-
- sprintf(defsys_cmd, "%s EW MINSIZE=%.7iK", defsys_cmd, min_size);
- sprintf(savesys_cmd, "SAVESYS %s \n IPL %s",
- kernel_nss_name, kernel_nss_name);
-
- __cpcmd(defsys_cmd, NULL, 0, &response);
-
- if (response != 0)
- return;
-
- __cpcmd(savesys_cmd, NULL, 0, &response);
-
- if (response != strlen(savesys_cmd))
- return;
-
- ipl_flags = IPL_NSS_VALID;
-}
-
-#else /* CONFIG_SHARED_KERNEL */
-
-static inline void create_kernel_nss(void) { }
-
-#endif /* CONFIG_SHARED_KERNEL */
-
-/*
- * Clear bss memory
- */
-static __init void clear_bss_section(void)
-{
- memset(__bss_start, 0, _end - __bss_start);
-}
-
-/*
- * Initialize storage key for kernel pages
- */
-static __init void init_kernel_storage_key(void)
-{
- unsigned long end_pfn, init_pfn;
-
- end_pfn = PFN_UP(__pa(&_end));
-
- for (init_pfn = 0 ; init_pfn < end_pfn; init_pfn++)
- page_set_storage_key(init_pfn << PAGE_SHIFT, PAGE_DEFAULT_KEY);
-}
-
-static __init void detect_machine_type(void)
-{
- struct cpuinfo_S390 *cpuinfo = &S390_lowcore.cpu_data;
-
- asm volatile("stidp %0" : "=m" (S390_lowcore.cpu_data.cpu_id));
-
- /* Running under z/VM ? */
- if (cpuinfo->cpu_id.version == 0xff)
- machine_flags |= 1;
-
- /* Running on a P/390 ? */
- if (cpuinfo->cpu_id.machine == 0x7490)
- machine_flags |= 4;
-}
-
-/*
- * Save ipl parameters, clear bss memory, initialize storage keys
- * and create a kernel NSS at startup if the SAVESYS= parm is defined
- */
-void __init startup_init(void)
-{
- ipl_save_parameters();
- clear_bss_section();
- init_kernel_storage_key();
- lockdep_init();
- detect_machine_type();
- create_kernel_nss();
-}
-
#ifdef CONFIG_SMP
void (*_machine_restart)(char *command) = machine_restart_smp;
void (*_machine_halt)(void) = machine_halt_smp;