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Diffstat (limited to 'arch/s390/kernel/setup.c')
-rw-r--r--arch/s390/kernel/setup.c73
1 files changed, 29 insertions, 44 deletions
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 67e5fff96ee0..225ab2d0a4c6 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
@@ -593,7 +596,8 @@ static void __init setup_resources(void)
* part of the System RAM resource.
*/
if (crashk_res.end) {
- memblock_add_node(crashk_res.start, resource_size(&crashk_res), 0);
+ memblock_add_node(crashk_res.start, resource_size(&crashk_res),
+ 0, MEMBLOCK_NONE);
memblock_reserve(crashk_res.start, resource_size(&crashk_res));
insert_resource(&iomem_resource, &crashk_res);
}
@@ -602,7 +606,7 @@ static void __init setup_resources(void)
static void __init setup_memory_end(void)
{
- memblock_remove(ident_map_size, ULONG_MAX);
+ memblock_remove(ident_map_size, PHYS_ADDR_MAX - ident_map_size);
max_pfn = max_low_pfn = PFN_DOWN(ident_map_size);
pr_notice("The maximum memory size is %luMB\n", ident_map_size >> 20);
}
@@ -634,14 +638,6 @@ static struct notifier_block kdump_mem_nb = {
#endif
/*
- * Make sure that the area above identity mapping is protected
- */
-static void __init reserve_above_ident_map(void)
-{
- memblock_reserve(ident_map_size, ULONG_MAX);
-}
-
-/*
* Reserve memory for kdump kernel to be loaded with kexec
*/
static void __init reserve_crashkernel(void)
@@ -693,7 +689,7 @@ static void __init reserve_crashkernel(void)
}
if (register_memory_notifier(&kdump_mem_nb)) {
- memblock_free(crash_base, crash_size);
+ memblock_phys_free(crash_base, crash_size);
return;
}
@@ -718,7 +714,7 @@ 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
@@ -748,7 +744,7 @@ static void __init free_mem_detect_info(void)
get_mem_detect_reserved(&start, &size);
if (size)
- memblock_free(start, size);
+ memblock_phys_free(start, size);
}
static const char * __init get_mem_info_source(void)
@@ -781,7 +777,6 @@ static void __init memblock_add_mem_detect_info(void)
}
memblock_set_bottom_up(false);
memblock_set_node(0, ULONG_MAX, &memblock.memory, 0);
- memblock_dump_all();
}
/*
@@ -793,7 +788,7 @@ static void __init check_initrd(void)
if (initrd_data.start && initrd_data.size &&
!memblock_is_region_memory(initrd_data.start, initrd_data.size)) {
pr_err("The initial RAM disk does not fit into the memory\n");
- memblock_free(initrd_data.start, initrd_data.size);
+ memblock_phys_free(initrd_data.start, initrd_data.size);
initrd_start = initrd_end = 0;
}
#endif
@@ -804,12 +799,10 @@ 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)
@@ -824,27 +817,18 @@ static void __init setup_memory(void)
storage_key_init_range(start, end);
psw_set_key(PAGE_DEFAULT_KEY);
-
- /* Only cosmetics */
- memblock_enforce_memory_limit(memblock_end_of_DRAM());
}
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);
@@ -883,14 +867,12 @@ 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_free((unsigned long) vmms, PAGE_SIZE);
+ memblock_free(vmms, PAGE_SIZE);
}
/*
@@ -1005,24 +987,24 @@ void __init setup_arch(char **cmdline_p)
setup_control_program_code();
/* Do some memory reservations *before* memory is added to memblock */
- reserve_above_ident_map();
reserve_kernel();
reserve_initrd();
reserve_certificate_list();
reserve_mem_detect_info();
+ memblock_set_current_limit(ident_map_size);
memblock_allow_resize();
/* Get information about *all* installed memory */
memblock_add_mem_detect_info();
free_mem_detect_info();
+ setup_memory_end();
+ memblock_dump_all();
+ setup_memory();
relocate_amode31_section();
setup_cr();
-
setup_uv();
- setup_memory_end();
- setup_memory();
dma_contiguous_reserve(ident_map_size);
vmcp_cma_reserve();
if (MACHINE_HAS_EDAT2)
@@ -1047,6 +1029,9 @@ 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.
*/
generated by cgit (git 2.34.1) at 2025-08-31 09:17:28 +0000