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-rw-r--r--arch/mips/kernel/Makefile4
-rw-r--r--arch/mips/kernel/jump_label.c2
-rw-r--r--arch/mips/kernel/process.c2
-rw-r--r--arch/mips/kernel/prom.c6
-rw-r--r--arch/mips/kernel/relocate.c2
-rw-r--r--arch/mips/kernel/relocate_kernel.S15
-rw-r--r--arch/mips/kernel/segment.c15
-rw-r--r--arch/mips/kernel/setup.c23
-rw-r--r--arch/mips/kernel/vdso.c2
9 files changed, 38 insertions, 33 deletions
diff --git a/arch/mips/kernel/Makefile b/arch/mips/kernel/Makefile
index 7c96282bff2e..5d1addac5e28 100644
--- a/arch/mips/kernel/Makefile
+++ b/arch/mips/kernel/Makefile
@@ -3,9 +3,9 @@
# Makefile for the Linux/MIPS kernel.
#
-extra-y := head.o vmlinux.lds
+extra-y := vmlinux.lds
-obj-y += branch.o cmpxchg.o elf.o entry.o genex.o idle.o irq.o \
+obj-y += head.o branch.o cmpxchg.o elf.o entry.o genex.o idle.o irq.o \
process.o prom.o ptrace.o reset.o setup.o signal.o \
syscall.o time.o topology.o traps.o unaligned.o watch.o \
vdso.o cacheinfo.o
diff --git a/arch/mips/kernel/jump_label.c b/arch/mips/kernel/jump_label.c
index 71a882c8c6eb..f7978d50a2ba 100644
--- a/arch/mips/kernel/jump_label.c
+++ b/arch/mips/kernel/jump_label.c
@@ -56,7 +56,7 @@ void arch_jump_label_transform(struct jump_entry *e,
* The branch offset must fit in the instruction's 26
* bit field.
*/
- WARN_ON((offset >= BIT(25)) ||
+ WARN_ON((offset >= (long)BIT(25)) ||
(offset < -(long)BIT(25)));
insn.j_format.opcode = bc6_op;
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
index 35b912bce429..bbe9ce471791 100644
--- a/arch/mips/kernel/process.c
+++ b/arch/mips/kernel/process.c
@@ -711,7 +711,7 @@ unsigned long mips_stack_top(void)
unsigned long arch_align_stack(unsigned long sp)
{
if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
- sp -= get_random_int() & ~PAGE_MASK;
+ sp -= prandom_u32_max(PAGE_SIZE);
return sp & ALMASK;
}
diff --git a/arch/mips/kernel/prom.c b/arch/mips/kernel/prom.c
index 7db6ff9aed7d..f88ce78e13e3 100644
--- a/arch/mips/kernel/prom.c
+++ b/arch/mips/kernel/prom.c
@@ -26,7 +26,7 @@ __init void mips_set_machine_name(const char *name)
if (name == NULL)
return;
- strlcpy(mips_machine_name, name, sizeof(mips_machine_name));
+ strscpy(mips_machine_name, name, sizeof(mips_machine_name));
pr_info("MIPS: machine is %s\n", mips_get_machine_name());
}
@@ -52,9 +52,9 @@ int __init __dt_register_buses(const char *bus0, const char *bus1)
if (!of_have_populated_dt())
panic("device tree not present");
- strlcpy(of_ids[0].compatible, bus0, sizeof(of_ids[0].compatible));
+ strscpy(of_ids[0].compatible, bus0, sizeof(of_ids[0].compatible));
if (bus1) {
- strlcpy(of_ids[1].compatible, bus1,
+ strscpy(of_ids[1].compatible, bus1,
sizeof(of_ids[1].compatible));
}
diff --git a/arch/mips/kernel/relocate.c b/arch/mips/kernel/relocate.c
index 56b51de2dc51..58fc8d089402 100644
--- a/arch/mips/kernel/relocate.c
+++ b/arch/mips/kernel/relocate.c
@@ -340,7 +340,7 @@ void *__init relocate_kernel(void)
early_init_dt_scan(fdt);
if (boot_command_line[0]) {
/* Boot command line was passed in device tree */
- strlcpy(arcs_cmdline, boot_command_line, COMMAND_LINE_SIZE);
+ strscpy(arcs_cmdline, boot_command_line, COMMAND_LINE_SIZE);
}
#endif /* CONFIG_USE_OF */
diff --git a/arch/mips/kernel/relocate_kernel.S b/arch/mips/kernel/relocate_kernel.S
index cfde14b48fd8..f5b2ef979b43 100644
--- a/arch/mips/kernel/relocate_kernel.S
+++ b/arch/mips/kernel/relocate_kernel.S
@@ -145,8 +145,7 @@ LEAF(kexec_smp_wait)
* kexec_args[0..3] are used to prepare register values.
*/
-kexec_args:
- EXPORT(kexec_args)
+EXPORT(kexec_args)
arg0: PTR_WD 0x0
arg1: PTR_WD 0x0
arg2: PTR_WD 0x0
@@ -159,8 +158,7 @@ arg3: PTR_WD 0x0
* their registers a0-a3. secondary_kexec_args[0..3] are used
* to prepare register values.
*/
-secondary_kexec_args:
- EXPORT(secondary_kexec_args)
+EXPORT(secondary_kexec_args)
s_arg0: PTR_WD 0x0
s_arg1: PTR_WD 0x0
s_arg2: PTR_WD 0x0
@@ -171,19 +169,16 @@ kexec_flag:
#endif
-kexec_start_address:
- EXPORT(kexec_start_address)
+EXPORT(kexec_start_address)
PTR_WD 0x0
.size kexec_start_address, PTRSIZE
-kexec_indirection_page:
- EXPORT(kexec_indirection_page)
+EXPORT(kexec_indirection_page)
PTR_WD 0
.size kexec_indirection_page, PTRSIZE
relocate_new_kernel_end:
-relocate_new_kernel_size:
- EXPORT(relocate_new_kernel_size)
+EXPORT(relocate_new_kernel_size)
PTR_WD relocate_new_kernel_end - relocate_new_kernel
.size relocate_new_kernel_size, PTRSIZE
diff --git a/arch/mips/kernel/segment.c b/arch/mips/kernel/segment.c
index 0a9bd7b0983b..24560501c70d 100644
--- a/arch/mips/kernel/segment.c
+++ b/arch/mips/kernel/segment.c
@@ -46,7 +46,7 @@ static void build_segment_config(char *str, unsigned int cfg)
((cfg & MIPS_SEGCFG_EU) >> MIPS_SEGCFG_EU_SHIFT));
}
-static int show_segments(struct seq_file *m, void *v)
+static int segments_show(struct seq_file *m, void *v)
{
unsigned int segcfg;
char str[42];
@@ -80,18 +80,7 @@ static int show_segments(struct seq_file *m, void *v)
return 0;
}
-
-static int segments_open(struct inode *inode, struct file *file)
-{
- return single_open(file, show_segments, NULL);
-}
-
-static const struct file_operations segments_fops = {
- .open = segments_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(segments);
static int __init segments_info(void)
{
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index 2ca156a5b231..f1c88f8a1dc5 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -42,6 +42,7 @@
#include <asm/setup.h>
#include <asm/smp-ops.h>
#include <asm/prom.h>
+#include <asm/fw/fw.h>
#ifdef CONFIG_MIPS_ELF_APPENDED_DTB
char __section(".appended_dtb") __appended_dtb[0x100000];
@@ -750,12 +751,30 @@ static void __init prefill_possible_map(void)
for (; i < NR_CPUS; i++)
set_cpu_possible(i, false);
- nr_cpu_ids = possible;
+ set_nr_cpu_ids(possible);
}
#else
static inline void prefill_possible_map(void) {}
#endif
+static void __init setup_rng_seed(void)
+{
+ char *rng_seed_hex = fw_getenv("rngseed");
+ u8 rng_seed[512];
+ size_t len;
+
+ if (!rng_seed_hex)
+ return;
+
+ len = min(sizeof(rng_seed), strlen(rng_seed_hex) / 2);
+ if (hex2bin(rng_seed, rng_seed_hex, len))
+ return;
+
+ add_bootloader_randomness(rng_seed, len);
+ memzero_explicit(rng_seed, len);
+ memzero_explicit(rng_seed_hex, len * 2);
+}
+
void __init setup_arch(char **cmdline_p)
{
cpu_probe();
@@ -786,6 +805,8 @@ void __init setup_arch(char **cmdline_p)
paging_init();
memblock_dump_all();
+
+ setup_rng_seed();
}
unsigned long kernelsp[NR_CPUS];
diff --git a/arch/mips/kernel/vdso.c b/arch/mips/kernel/vdso.c
index b2cc2c2dd4bf..5fd9bf1d596c 100644
--- a/arch/mips/kernel/vdso.c
+++ b/arch/mips/kernel/vdso.c
@@ -79,7 +79,7 @@ static unsigned long vdso_base(void)
}
if (current->flags & PF_RANDOMIZE) {
- base += get_random_int() & (VDSO_RANDOMIZE_SIZE - 1);
+ base += prandom_u32_max(VDSO_RANDOMIZE_SIZE);
base = PAGE_ALIGN(base);
}
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