summaryrefslogtreecommitdiff
path: root/arch/arm/kernel/setup.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/kernel/setup.c')
-rw-r--r--arch/arm/kernel/setup.c108
1 files changed, 49 insertions, 59 deletions
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index f97eb2371672..0bfd66c7ada0 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -15,10 +15,10 @@
#include <linux/console.h>
#include <linux/seq_file.h>
#include <linux/screen_info.h>
-#include <linux/of_platform.h>
#include <linux/init.h>
#include <linux/kexec.h>
#include <linux/libfdt.h>
+#include <linux/of.h>
#include <linux/of_fdt.h>
#include <linux/cpu.h>
#include <linux/interrupt.h>
@@ -76,13 +76,6 @@ static int __init fpe_setup(char *line)
__setup("fpe=", fpe_setup);
#endif
-extern void init_default_cache_policy(unsigned long);
-extern void paging_init(const struct machine_desc *desc);
-extern void early_mm_init(const struct machine_desc *);
-extern void adjust_lowmem_bounds(void);
-extern enum reboot_mode reboot_mode;
-extern void setup_dma_zone(const struct machine_desc *desc);
-
unsigned int processor_id;
EXPORT_SYMBOL(processor_id);
unsigned int __machine_arch_type __read_mostly;
@@ -141,10 +134,10 @@ EXPORT_SYMBOL(outer_cache);
int __cpu_architecture __read_mostly = CPU_ARCH_UNKNOWN;
struct stack {
- u32 irq[3];
- u32 abt[3];
- u32 und[3];
- u32 fiq[3];
+ u32 irq[4];
+ u32 abt[4];
+ u32 und[4];
+ u32 fiq[4];
} ____cacheline_aligned;
#ifndef CONFIG_CPU_V7M
@@ -450,6 +443,8 @@ static void __init cpuid_init_hwcaps(void)
{
int block;
u32 isar5;
+ u32 isar6;
+ u32 pfr2;
if (cpu_architecture() < CPU_ARCH_ARMv7)
return;
@@ -485,6 +480,18 @@ static void __init cpuid_init_hwcaps(void)
block = cpuid_feature_extract_field(isar5, 16);
if (block >= 1)
elf_hwcap2 |= HWCAP2_CRC32;
+
+ /* Check for Speculation barrier instruction */
+ isar6 = read_cpuid_ext(CPUID_EXT_ISAR6);
+ block = cpuid_feature_extract_field(isar6, 12);
+ if (block >= 1)
+ elf_hwcap2 |= HWCAP2_SB;
+
+ /* Check for Speculative Store Bypassing control */
+ pfr2 = read_cpuid_ext(CPUID_EXT_PFR2);
+ block = cpuid_feature_extract_field(pfr2, 4);
+ if (block >= 1)
+ elf_hwcap2 |= HWCAP2_SSBS;
}
static void __init elf_hwcap_fixup(void)
@@ -873,10 +880,7 @@ static void __init request_standard_resources(const struct machine_desc *mdesc)
*/
boot_alias_start = phys_to_idmap(start);
if (arm_has_idmap_alias() && boot_alias_start != IDMAP_INVALID_ADDR) {
- res = memblock_alloc(sizeof(*res), SMP_CACHE_BYTES);
- if (!res)
- panic("%s: Failed to allocate %zu bytes\n",
- __func__, sizeof(*res));
+ res = memblock_alloc_or_panic(sizeof(*res), SMP_CACHE_BYTES);
res->name = "System RAM (boot alias)";
res->start = boot_alias_start;
res->end = phys_to_idmap(res_end);
@@ -884,10 +888,7 @@ static void __init request_standard_resources(const struct machine_desc *mdesc)
request_resource(&iomem_resource, res);
}
- res = memblock_alloc(sizeof(*res), SMP_CACHE_BYTES);
- if (!res)
- panic("%s: Failed to allocate %zu bytes\n", __func__,
- sizeof(*res));
+ res = memblock_alloc_or_panic(sizeof(*res), SMP_CACHE_BYTES);
res->name = "System RAM";
res->start = start;
res->end = res_end;
@@ -921,9 +922,8 @@ static void __init request_standard_resources(const struct machine_desc *mdesc)
request_resource(&ioport_resource, &lp2);
}
-#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE) || \
- defined(CONFIG_EFI)
-struct screen_info screen_info = {
+#if defined(CONFIG_VGA_CONSOLE)
+struct screen_info vgacon_screen_info = {
.orig_video_lines = 30,
.orig_video_cols = 80,
.orig_video_mode = 0,
@@ -973,7 +973,7 @@ static int __init init_machine_late(void)
}
late_initcall(init_machine_late);
-#ifdef CONFIG_KEXEC
+#ifdef CONFIG_CRASH_RESERVE
/*
* The crash region must be aligned to 128MB to avoid
* zImage relocating below the reserved region.
@@ -1003,8 +1003,10 @@ static void __init reserve_crashkernel(void)
total_mem = get_total_mem();
ret = parse_crashkernel(boot_command_line, total_mem,
- &crash_size, &crash_base);
- if (ret)
+ &crash_size, &crash_base,
+ NULL, NULL, NULL);
+ /* invalid value specified or crashkernel=0 */
+ if (ret || !crash_size)
return;
if (crash_base <= 0) {
@@ -1012,31 +1014,25 @@ static void __init reserve_crashkernel(void)
unsigned long long lowmem_max = __pa(high_memory - 1) + 1;
if (crash_max > lowmem_max)
crash_max = lowmem_max;
- crash_base = memblock_find_in_range(CRASH_ALIGN, crash_max,
- crash_size, CRASH_ALIGN);
+
+ crash_base = memblock_phys_alloc_range(crash_size, CRASH_ALIGN,
+ CRASH_ALIGN, crash_max);
if (!crash_base) {
pr_err("crashkernel reservation failed - No suitable area found.\n");
return;
}
} else {
+ unsigned long long crash_max = crash_base + crash_size;
unsigned long long start;
- start = memblock_find_in_range(crash_base,
- crash_base + crash_size,
- crash_size, SECTION_SIZE);
- if (start != crash_base) {
+ start = memblock_phys_alloc_range(crash_size, SECTION_SIZE,
+ crash_base, crash_max);
+ if (!start) {
pr_err("crashkernel reservation failed - memory is in use.\n");
return;
}
}
- ret = memblock_reserve(crash_base, crash_size);
- if (ret < 0) {
- pr_warn("crashkernel reservation failed - memory is in use (0x%lx)\n",
- (unsigned long)crash_base);
- return;
- }
-
pr_info("Reserving %ldMB of memory at %ldMB for crashkernel (System RAM: %ldMB)\n",
(unsigned long)(crash_size >> 20),
(unsigned long)(crash_base >> 20),
@@ -1064,7 +1060,7 @@ static void __init reserve_crashkernel(void)
}
#else
static inline void reserve_crashkernel(void) {}
-#endif /* CONFIG_KEXEC */
+#endif /* CONFIG_CRASH_RESERVE*/
void __init hyp_mode_check(void)
{
@@ -1133,7 +1129,7 @@ void __init setup_arch(char **cmdline_p)
setup_initial_init_mm(_text, _etext, _edata, _end);
/* populate cmd_line too for later use, preserving boot_command_line */
- strlcpy(cmd_line, boot_command_line, COMMAND_LINE_SIZE);
+ strscpy(cmd_line, boot_command_line, COMMAND_LINE_SIZE);
*cmdline_p = cmd_line;
early_fixmap_init();
@@ -1146,7 +1142,7 @@ void __init setup_arch(char **cmdline_p)
#endif
setup_dma_zone(mdesc);
xen_early_init();
- efi_init();
+ arm_efi_init();
/*
* Make sure the calculation for lowmem/highmem is set appropriately
* before reserving/allocating any memory
@@ -1189,13 +1185,9 @@ void __init setup_arch(char **cmdline_p)
reserve_crashkernel();
-#ifdef CONFIG_GENERIC_IRQ_MULTI_HANDLER
- handle_arch_irq = mdesc->handle_irq;
-#endif
-
#ifdef CONFIG_VT
#if defined(CONFIG_VGA_CONSOLE)
- conswitchp = &vga_con;
+ vgacon_register_screen(&vgacon_screen_info);
#endif
#endif
@@ -1203,20 +1195,10 @@ void __init setup_arch(char **cmdline_p)
mdesc->init_early();
}
-
-static int __init topology_init(void)
+bool arch_cpu_is_hotpluggable(int num)
{
- int cpu;
-
- for_each_possible_cpu(cpu) {
- struct cpuinfo_arm *cpuinfo = &per_cpu(cpu_data, cpu);
- cpuinfo->cpu.hotpluggable = platform_can_hotplug_cpu(cpu);
- register_cpu(&cpuinfo->cpu, cpu);
- }
-
- return 0;
+ return platform_can_hotplug_cpu(num);
}
-subsys_initcall(topology_init);
#ifdef CONFIG_HAVE_PROC_CPU
static int __init proc_cpu_init(void)
@@ -1254,6 +1236,12 @@ static const char *hwcap_str[] = {
"vfpd32",
"lpae",
"evtstrm",
+ "fphp",
+ "asimdhp",
+ "asimddp",
+ "asimdfhm",
+ "asimdbf16",
+ "i8mm",
NULL
};
@@ -1263,6 +1251,8 @@ static const char *hwcap2_str[] = {
"sha1",
"sha2",
"crc32",
+ "sb",
+ "ssbs",
NULL
};
generated by cgit (git 2.34.1) at 2025-12-22 16:03:12 +0000