diff options
Diffstat (limited to 'arch/s390/kernel/early.c')
| -rw-r--r-- | arch/s390/kernel/early.c | 145 |
1 files changed, 3 insertions, 142 deletions
diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c index b945448b9eae..497a92047591 100644 --- a/arch/s390/kernel/early.c +++ b/arch/s390/kernel/early.c @@ -31,14 +31,6 @@ #include <asm/facility.h> #include "entry.h" -/* - * Create a Kernel NSS if the SAVESYS= parameter is defined - */ -#define DEFSYS_CMD_SIZE 128 -#define SAVESYS_CMD_SIZE 32 - -char kernel_nss_name[NSS_NAME_SIZE + 1]; - static void __init setup_boot_command_line(void); /* @@ -59,134 +51,6 @@ static void __init reset_tod_clock(void) S390_lowcore.last_update_clock = TOD_UNIX_EPOCH; } -#ifdef CONFIG_SHARED_KERNEL -int __init savesys_ipl_nss(char *cmd, const int cmdlen); - -asm( - " .section .init.text,\"ax\",@progbits\n" - " .align 4\n" - " .type savesys_ipl_nss, @function\n" - "savesys_ipl_nss:\n" - " stmg 6,15,48(15)\n" - " lgr 14,3\n" - " sam31\n" - " diag 2,14,0x8\n" - " sam64\n" - " lgr 2,14\n" - " lmg 6,15,48(15)\n" - " br 14\n" - " .size savesys_ipl_nss, .-savesys_ipl_nss\n" - " .previous\n"); - -static __initdata char upper_command_line[COMMAND_LINE_SIZE]; - -static noinline __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; - int hlen; - size_t len; - char *savesys_ptr; - 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(boot_command_line); i++) - upper_command_line[i] = toupper(boot_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; - - hlen = snprintf(defsys_cmd, DEFSYS_CMD_SIZE, - "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; - hlen += snprintf(defsys_cmd + hlen, DEFSYS_CMD_SIZE - hlen, - " EW %.5X-%.5X", sinitrd_pfn, einitrd_pfn); - } -#endif - - snprintf(defsys_cmd + hlen, DEFSYS_CMD_SIZE - hlen, - " EW MINSIZE=%.7iK PARMREGS=0-13", min_size); - defsys_cmd[DEFSYS_CMD_SIZE - 1] = '\0'; - snprintf(savesys_cmd, SAVESYS_CMD_SIZE, "SAVESYS %s \n IPL %s", - kernel_nss_name, kernel_nss_name); - savesys_cmd[SAVESYS_CMD_SIZE - 1] = '\0'; - - __cpcmd(defsys_cmd, NULL, 0, &response); - - if (response != 0) { - pr_err("Defining the Linux kernel NSS failed with rc=%d\n", - response); - kernel_nss_name[0] = '\0'; - return; - } - - len = strlen(savesys_cmd); - ASCEBC(savesys_cmd, len); - response = savesys_ipl_nss(savesys_cmd, len); - - /* On success: response is equal to the command size, - * max SAVESYS_CMD_SIZE - * On error: response contains the numeric portion of cp error message. - * for SAVESYS it will be >= 263 - * for missing privilege class, it will be 1 - */ - if (response > SAVESYS_CMD_SIZE || response == 1) { - pr_err("Saving the Linux kernel NSS failed with rc=%d\n", - response); - kernel_nss_name[0] = '\0'; - return; - } - - /* re-initialize cputime accounting. */ - get_tod_clock_ext(tod_clock_base); - S390_lowcore.last_update_clock = *(__u64 *) &tod_clock_base[1]; - S390_lowcore.last_update_timer = 0x7fffffffffffffffULL; - S390_lowcore.user_timer = 0; - S390_lowcore.system_timer = 0; - asm volatile("SPT 0(%0)" : : "a" (&S390_lowcore.last_update_timer)); - - /* re-setup boot command line with new ipl vm parms */ - ipl_update_parameters(); - setup_boot_command_line(); - - ipl_flags = IPL_NSS_VALID; -} - -#else /* CONFIG_SHARED_KERNEL */ - -static inline void create_kernel_nss(void) { } - -#endif /* CONFIG_SHARED_KERNEL */ - /* * Clear bss memory */ @@ -375,8 +239,10 @@ static __init void detect_machine_facilities(void) S390_lowcore.machine_flags |= MACHINE_FLAG_IDTE; if (test_facility(40)) S390_lowcore.machine_flags |= MACHINE_FLAG_LPP; - if (test_facility(50) && test_facility(73)) + if (test_facility(50) && test_facility(73)) { S390_lowcore.machine_flags |= MACHINE_FLAG_TE; + __ctl_set_bit(0, 55); + } if (test_facility(51)) S390_lowcore.machine_flags |= MACHINE_FLAG_TLB_LC; if (test_facility(129)) { @@ -549,10 +415,6 @@ static void __init setup_boot_command_line(void) append_to_cmdline(append_ipl_scpdata); } -/* - * 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) { reset_tod_clock(); @@ -569,7 +431,6 @@ void __init startup_init(void) setup_arch_string(); ipl_update_parameters(); setup_boot_command_line(); - create_kernel_nss(); detect_diag9c(); detect_diag44(); detect_machine_facilities(); |