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-rw-r--r--arch/arm/kernel/armksyms.c1
-rw-r--r--arch/arm/kernel/ftrace.c2
-rw-r--r--arch/arm/kernel/head-common.S2
-rw-r--r--arch/arm/kernel/module.c4
-rw-r--r--arch/arm/kernel/setup.c57
-rw-r--r--arch/arm/kernel/smp.c4
-rw-r--r--arch/arm/kernel/thumbee.c2
-rw-r--r--arch/arm/kernel/vmlinux.lds.S2
8 files changed, 41 insertions, 33 deletions
diff --git a/arch/arm/kernel/armksyms.c b/arch/arm/kernel/armksyms.c
index 23af3c972c9a..531e1860e546 100644
--- a/arch/arm/kernel/armksyms.c
+++ b/arch/arm/kernel/armksyms.c
@@ -8,6 +8,7 @@
* published by the Free Software Foundation.
*/
#include <linux/module.h>
+#include <linux/sched.h>
#include <linux/string.h>
#include <linux/cryptohash.h>
#include <linux/delay.h>
diff --git a/arch/arm/kernel/ftrace.c b/arch/arm/kernel/ftrace.c
index 6c90479e8974..c63842766229 100644
--- a/arch/arm/kernel/ftrace.c
+++ b/arch/arm/kernel/ftrace.c
@@ -95,7 +95,7 @@ int ftrace_update_ftrace_func(ftrace_func_t func)
return ret;
}
-/* run from kstop_machine */
+/* run from ftrace_init with irqs disabled */
int __init ftrace_dyn_arch_init(void *data)
{
ftrace_mcount_set(data);
diff --git a/arch/arm/kernel/head-common.S b/arch/arm/kernel/head-common.S
index bde52df1c668..991952c644d1 100644
--- a/arch/arm/kernel/head-common.S
+++ b/arch/arm/kernel/head-common.S
@@ -18,7 +18,7 @@
__switch_data:
.long __mmap_switched
.long __data_loc @ r4
- .long __data_start @ r5
+ .long _data @ r5
.long __bss_start @ r6
.long _end @ r7
.long processor_id @ r4
diff --git a/arch/arm/kernel/module.c b/arch/arm/kernel/module.c
index b8d965dcd6fd..dab48f27263f 100644
--- a/arch/arm/kernel/module.c
+++ b/arch/arm/kernel/module.c
@@ -21,6 +21,7 @@
#include <linux/string.h>
#include <asm/pgtable.h>
+#include <asm/sections.h>
#ifdef CONFIG_XIP_KERNEL
/*
@@ -29,9 +30,8 @@
* MODULES_VADDR is redefined here and not in asm/memory.h to avoid
* recompiling the whole kernel when CONFIG_XIP_KERNEL is turned on/off.
*/
-extern void _etext;
#undef MODULES_VADDR
-#define MODULES_VADDR (((unsigned long)&_etext + ~PGDIR_MASK) & PGDIR_MASK)
+#define MODULES_VADDR (((unsigned long)_etext + ~PGDIR_MASK) & PGDIR_MASK)
#endif
#ifdef CONFIG_MMU
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 1f1eecca7f55..7049815d66d5 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -29,6 +29,7 @@
#include <asm/cputype.h>
#include <asm/elf.h>
#include <asm/procinfo.h>
+#include <asm/sections.h>
#include <asm/setup.h>
#include <asm/mach-types.h>
#include <asm/cacheflush.h>
@@ -59,9 +60,8 @@ static int __init fpe_setup(char *line)
__setup("fpe=", fpe_setup);
#endif
-extern void paging_init(struct meminfo *, struct machine_desc *desc);
+extern void paging_init(struct machine_desc *desc);
extern void reboot_setup(char *str);
-extern void _text, _etext, __data_start, _edata, _end;
unsigned int processor_id;
EXPORT_SYMBOL(processor_id);
@@ -112,7 +112,6 @@ static struct stack stacks[NR_CPUS];
char elf_platform[ELF_PLATFORM_SIZE];
EXPORT_SYMBOL(elf_platform);
-static struct meminfo meminfo __initdata = { 0, };
static const char *cpu_name;
static const char *machine_name;
static char __initdata command_line[COMMAND_LINE_SIZE];
@@ -367,21 +366,34 @@ static struct machine_desc * __init setup_machine(unsigned int nr)
return list;
}
-static void __init arm_add_memory(unsigned long start, unsigned long size)
+static int __init arm_add_memory(unsigned long start, unsigned long size)
{
- struct membank *bank;
+ struct membank *bank = &meminfo.bank[meminfo.nr_banks];
+
+ if (meminfo.nr_banks >= NR_BANKS) {
+ printk(KERN_CRIT "NR_BANKS too low, "
+ "ignoring memory at %#lx\n", start);
+ return -EINVAL;
+ }
/*
* Ensure that start/size are aligned to a page boundary.
* Size is appropriately rounded down, start is rounded up.
*/
size -= start & ~PAGE_MASK;
-
- bank = &meminfo.bank[meminfo.nr_banks++];
-
bank->start = PAGE_ALIGN(start);
bank->size = size & PAGE_MASK;
bank->node = PHYS_TO_NID(start);
+
+ /*
+ * Check whether this memory region has non-zero size or
+ * invalid node number.
+ */
+ if (bank->size == 0 || bank->node >= MAX_NUMNODES)
+ return -EINVAL;
+
+ meminfo.nr_banks++;
+ return 0;
}
/*
@@ -472,10 +484,10 @@ request_standard_resources(struct meminfo *mi, struct machine_desc *mdesc)
struct resource *res;
int i;
- kernel_code.start = virt_to_phys(&_text);
- kernel_code.end = virt_to_phys(&_etext - 1);
- kernel_data.start = virt_to_phys(&__data_start);
- kernel_data.end = virt_to_phys(&_end - 1);
+ kernel_code.start = virt_to_phys(_text);
+ kernel_code.end = virt_to_phys(_etext - 1);
+ kernel_data.start = virt_to_phys(_data);
+ kernel_data.end = virt_to_phys(_end - 1);
for (i = 0; i < mi->nr_banks; i++) {
if (mi->bank[i].size == 0)
@@ -539,14 +551,7 @@ __tagtable(ATAG_CORE, parse_tag_core);
static int __init parse_tag_mem32(const struct tag *tag)
{
- if (meminfo.nr_banks >= NR_BANKS) {
- printk(KERN_WARNING
- "Ignoring memory bank 0x%08x size %dKB\n",
- tag->u.mem.start, tag->u.mem.size / 1024);
- return -EINVAL;
- }
- arm_add_memory(tag->u.mem.start, tag->u.mem.size);
- return 0;
+ return arm_add_memory(tag->u.mem.start, tag->u.mem.size);
}
__tagtable(ATAG_MEM, parse_tag_mem32);
@@ -710,15 +715,15 @@ void __init setup_arch(char **cmdline_p)
parse_tags(tags);
}
- init_mm.start_code = (unsigned long) &_text;
- init_mm.end_code = (unsigned long) &_etext;
- init_mm.end_data = (unsigned long) &_edata;
- init_mm.brk = (unsigned long) &_end;
+ init_mm.start_code = (unsigned long) _text;
+ init_mm.end_code = (unsigned long) _etext;
+ init_mm.end_data = (unsigned long) _edata;
+ init_mm.brk = (unsigned long) _end;
memcpy(boot_command_line, from, COMMAND_LINE_SIZE);
boot_command_line[COMMAND_LINE_SIZE-1] = '\0';
parse_cmdline(cmdline_p, from);
- paging_init(&meminfo, mdesc);
+ paging_init(mdesc);
request_standard_resources(&meminfo, mdesc);
#ifdef CONFIG_SMP
@@ -772,6 +777,8 @@ static const char *hwcap_str[] = {
"java",
"iwmmxt",
"crunch",
+ "thumbee",
+ "neon",
NULL
};
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index e42a749a56dd..019237d21622 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -181,7 +181,7 @@ int __cpuexit __cpu_disable(void)
/*
* Stop the local timer for this CPU.
*/
- local_timer_stop(cpu);
+ local_timer_stop();
/*
* Flush user cache and TLB mappings, and then remove this CPU
@@ -284,7 +284,7 @@ asmlinkage void __cpuinit secondary_start_kernel(void)
/*
* Setup local timer for this CPU.
*/
- local_timer_setup(cpu);
+ local_timer_setup();
calibrate_delay();
diff --git a/arch/arm/kernel/thumbee.c b/arch/arm/kernel/thumbee.c
index df3f6b7ebcea..9cb7aaca159f 100644
--- a/arch/arm/kernel/thumbee.c
+++ b/arch/arm/kernel/thumbee.c
@@ -25,7 +25,7 @@
/*
* Access to the ThumbEE Handler Base register
*/
-static inline unsigned long teehbr_read()
+static inline unsigned long teehbr_read(void)
{
unsigned long v;
asm("mrc p14, 6, %0, c1, c0, 0\n" : "=r" (v));
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index 4898bdcfe7dd..00216071eaf7 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -119,7 +119,7 @@ SECTIONS
#endif
.data : AT(__data_loc) {
- __data_start = .; /* address in memory */
+ _data = .; /* address in memory */
/*
* first, the init task union, aligned
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.