X-Git-Url: http://git.monstr.eu/?p=linux-2.6-microblaze.git;a=blobdiff_plain;f=arch%2Fs390%2Fkernel%2Fsetup.c;fp=arch%2Fs390%2Fkernel%2Fsetup.c;h=40405f2304f1be2376f8c275aec9a3ecd83d0d4a;hp=8a378d4262398f04024c4a9d411aa96536744e60;hb=0b707e572a1955b892dfcb32e7b573fab78767d9;hpb=0c5c62ddf88c34bc83b66e4ac9beb2bb0e1887d4

diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 8a378d426239..40405f2304f1 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -95,10 +95,10 @@ EXPORT_SYMBOL(console_irq);
  * relocated above 2 GB, because it has to use 31 bit addresses.
  * Such code and data is part of the .amode31 section.
  */
-unsigned long __amode31_ref __samode31 = __pa(&_samode31);
-unsigned long __amode31_ref __eamode31 = __pa(&_eamode31);
-unsigned long __amode31_ref __stext_amode31 = __pa(&_stext_amode31);
-unsigned long __amode31_ref __etext_amode31 = __pa(&_etext_amode31);
+unsigned long __amode31_ref __samode31 = (unsigned long)&_samode31;
+unsigned long __amode31_ref __eamode31 = (unsigned long)&_eamode31;
+unsigned long __amode31_ref __stext_amode31 = (unsigned long)&_stext_amode31;
+unsigned long __amode31_ref __etext_amode31 = (unsigned long)&_etext_amode31;
 struct exception_table_entry __amode31_ref *__start_amode31_ex_table = _start_amode31_ex_table;
 struct exception_table_entry __amode31_ref *__stop_amode31_ex_table = _stop_amode31_ex_table;
 
@@ -149,6 +149,7 @@ struct mem_detect_info __bootdata(mem_detect);
 struct initrd_data __bootdata(initrd_data);
 
 unsigned long __bootdata_preserved(__kaslr_offset);
+unsigned long __bootdata(__amode31_base);
 unsigned int __bootdata_preserved(zlib_dfltcc_support);
 EXPORT_SYMBOL(zlib_dfltcc_support);
 u64 __bootdata_preserved(stfle_fac_list[16]);
@@ -173,6 +174,8 @@ unsigned long MODULES_END;
 struct lowcore *lowcore_ptr[NR_CPUS];
 EXPORT_SYMBOL(lowcore_ptr);
 
+DEFINE_STATIC_KEY_FALSE(cpu_has_bear);
+
 /*
  * The Write Back bit position in the physaddr is given by the SLPC PCI.
  * Leaving the mask zero always uses write through which is safe
@@ -719,7 +722,7 @@ static void __init reserve_initrd(void)
 #ifdef CONFIG_BLK_DEV_INITRD
 	if (!initrd_data.start || !initrd_data.size)
 		return;
-	initrd_start = initrd_data.start;
+	initrd_start = (unsigned long)__va(initrd_data.start);
 	initrd_end = initrd_start + initrd_data.size;
 	memblock_reserve(initrd_data.start, initrd_data.size);
 #endif
@@ -805,12 +808,10 @@ static void __init check_initrd(void)
  */
 static void __init reserve_kernel(void)
 {
-	unsigned long start_pfn = PFN_UP(__pa(_end));
-
 	memblock_reserve(0, STARTUP_NORMAL_OFFSET);
-	memblock_reserve((unsigned long)sclp_early_sccb, EXT_SCCB_READ_SCP);
-	memblock_reserve((unsigned long)_stext, PFN_PHYS(start_pfn)
-			 - (unsigned long)_stext);
+	memblock_reserve(__amode31_base, __eamode31 - __samode31);
+	memblock_reserve(__pa(sclp_early_sccb), EXT_SCCB_READ_SCP);
+	memblock_reserve(__pa(_stext), _end - _stext);
 }
 
 static void __init setup_memory(void)
@@ -832,20 +833,14 @@ static void __init setup_memory(void)
 
 static void __init relocate_amode31_section(void)
 {
-	unsigned long amode31_addr, amode31_size;
-	long amode31_offset;
+	unsigned long amode31_size = __eamode31 - __samode31;
+	long amode31_offset = __amode31_base - __samode31;
 	long *ptr;
 
-	/* Allocate a new AMODE31 capable memory region */
-	amode31_size = __eamode31 - __samode31;
 	pr_info("Relocating AMODE31 section of size 0x%08lx\n", amode31_size);
-	amode31_addr = (unsigned long)memblock_alloc_low(amode31_size, PAGE_SIZE);
-	if (!amode31_addr)
-		panic("Failed to allocate memory for AMODE31 section\n");
-	amode31_offset = amode31_addr - __samode31;
 
 	/* Move original AMODE31 section to the new one */
-	memmove((void *)amode31_addr, (void *)__samode31, amode31_size);
+	memmove((void *)__amode31_base, (void *)__samode31, amode31_size);
 	/* Zero out the old AMODE31 section to catch invalid accesses within it */
 	memset((void *)__samode31, 0, amode31_size);
 
@@ -884,14 +879,12 @@ static void __init setup_randomness(void)
 {
 	struct sysinfo_3_2_2 *vmms;
 
-	vmms = (struct sysinfo_3_2_2 *) memblock_phys_alloc(PAGE_SIZE,
-							    PAGE_SIZE);
+	vmms = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
 	if (!vmms)
 		panic("Failed to allocate memory for sysinfo structure\n");
-
 	if (stsi(vmms, 3, 2, 2) == 0 && vmms->count)
 		add_device_randomness(&vmms->vm, sizeof(vmms->vm[0]) * vmms->count);
-	memblock_phys_free((unsigned long)vmms, PAGE_SIZE);
+	memblock_free(vmms, PAGE_SIZE);
 }
 
 /*
@@ -1048,6 +1041,9 @@ void __init setup_arch(char **cmdline_p)
 	smp_detect_cpus();
 	topology_init_early();
 
+	if (test_facility(193))
+		static_branch_enable(&cpu_has_bear);
+
 	/*
 	 * Create kernel page tables and switch to virtual addressing.
 	 */