5 files changed, 30 insertions, 20 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/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/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];