Merge tag 'mips_5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

Pull MIPS updates from Paul Burton:
 "Main MIPS changes:

   - boot_mem_map is removed, providing a nice cleanup made possible by
     the recent removal of bootmem.

   - Some fixes to atomics, in general providing compiler barriers for
     smp_mb__{before,after}_atomic plus fixes specific to Loongson CPUs
     or MIPS32 systems using cmpxchg64().

   - Conversion to the new generic VDSO infrastructure courtesy of
     Vincenzo Frascino.

   - Removal of undefined behavior in set_io_port_base(), fixing the
     behavior of some MIPS kernel configurations when built with recent
     clang versions.

   - Initial MIPS32 huge page support, functional on at least Ingenic
     SoCs.

   - pte_special() is now supported for some configurations, allowing
     among other things generic fast GUP to be used.

   - Miscellaneous fixes & cleanups.

  And platform specific changes:

   - Major improvements to Ingenic SoC support from Paul Cercueil,
     mostly enabled by the inclusion of the new TCU (timer-counter unit)
     drivers he's spent a very patient year or so working on. Plus some
     fixes for X1000 SoCs from Zhou Yanjie.

   - Netgear R6200 v1 systems are now supported by the bcm47xx platform.

   - DT updates for BMIPS, Lantiq & Microsemi Ocelot systems"

* tag 'mips_5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (89 commits)
  MIPS: Detect bad _PFN_SHIFT values
  MIPS: Disable pte_special() for MIPS32 with RiXi
  MIPS: ralink: deactivate PCI support for SOC_MT7621
  mips: compat: vdso: Use legacy syscalls as fallback
  MIPS: Drop Loongson _CACHE_* definitions
  MIPS: tlbex: Remove cpu_has_local_ebase
  MIPS: tlbex: Simplify r3k check
  MIPS: Select R3k-style TLB in Kconfig
  MIPS: PCI: refactor ioc3 special handling
  mips: remove ioremap_cachable
  mips/atomic: Fix smp_mb__{before,after}_atomic()
  mips/atomic: Fix loongson_llsc_mb() wreckage
  mips/atomic: Fix cmpxchg64 barriers
  MIPS: Octeon: remove duplicated include from dma-octeon.c
  firmware: bcm47xx_nvram: Allow COMPILE_TEST
  firmware: bcm47xx_nvram: Correct size_t printf format
  MIPS: Treat Loongson Extensions as ASEs
  MIPS: Remove dev_err() usage after platform_get_irq()
  MIPS: dts: mscc: describe the PTP ready interrupt
  MIPS: dts: mscc: describe the PTP register range
  ...

13 files changed, 129 insertions, 343 deletions

diff --git a/arch/mips/kernel/branch.c b/arch/mips/kernel/branch.c
index 1db29957a931..2c38f75d87ff 100644
--- a/arch/mips/kernel/branch.c
+++ b/arch/mips/kernel/branch.c
@@ -58,6 +58,7 @@ int __mm_isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn,
 		       unsigned long *contpc)
 {
 	union mips_instruction insn = (union mips_instruction)dec_insn.insn;
+	int __maybe_unused bc_false = 0;
 
 	if (!cpu_has_mmips)
 		return 0;
@@ -139,7 +140,6 @@ int __mm_isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn,
 #ifdef CONFIG_MIPS_FP_SUPPORT
 		case mm_bc2f_op:
 		case mm_bc1f_op: {
-			int bc_false = 0;
 			unsigned int fcr31;
 			unsigned int bit;
 
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index 9635c1db3ae6..c2eb392597bf 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -1384,15 +1384,6 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c, unsigned int cpu)
 			break;
 		}
 		break;
-	case PRID_IMP_R4300:
-		c->cputype = CPU_R4300;
-		__cpu_name[cpu] = "R4300";
-		set_isa(c, MIPS_CPU_ISA_III);
-		c->fpu_msk31 |= FPU_CSR_CONDX;
-		c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR |
-			     MIPS_CPU_LLSC;
-		c->tlbsize = 32;
-		break;
 	case PRID_IMP_R4600:
 		c->cputype = CPU_R4600;
 		__cpu_name[cpu] = "R4600";
@@ -1468,14 +1459,6 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c, unsigned int cpu)
 			     MIPS_CPU_LLSC;
 		c->tlbsize = 48;
 		break;
-	case PRID_IMP_R5432:
-		c->cputype = CPU_R5432;
-		__cpu_name[cpu] = "R5432";
-		set_isa(c, MIPS_CPU_ISA_IV);
-		c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR |
-			     MIPS_CPU_WATCH | MIPS_CPU_LLSC;
-		c->tlbsize = 48;
-		break;
 	case PRID_IMP_R5500:
 		c->cputype = CPU_R5500;
 		__cpu_name[cpu] = "R5500";
@@ -1508,15 +1491,6 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c, unsigned int cpu)
 		 */
 		c->tlbsize = (read_c0_info() & (1 << 29)) ? 64 : 48;
 		break;
-	case PRID_IMP_R8000:
-		c->cputype = CPU_R8000;
-		__cpu_name[cpu] = "RM8000";
-		set_isa(c, MIPS_CPU_ISA_IV);
-		c->options = MIPS_CPU_TLB | MIPS_CPU_4KEX |
-			     MIPS_CPU_FPU | MIPS_CPU_32FPR |
-			     MIPS_CPU_LLSC;
-		c->tlbsize = 384;      /* has weird TLB: 3-way x 128 */
-		break;
 	case PRID_IMP_R10000:
 		c->cputype = CPU_R10000;
 		__cpu_name[cpu] = "R10000";
@@ -1573,6 +1547,8 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c, unsigned int cpu)
 			__cpu_name[cpu] = "ICT Loongson-3";
 			set_elf_platform(cpu, "loongson3a");
 			set_isa(c, MIPS_CPU_ISA_M64R1);
+			c->ases |= (MIPS_ASE_LOONGSON_MMI | MIPS_ASE_LOONGSON_CAM |
+				MIPS_ASE_LOONGSON_EXT);
 			break;
 		case PRID_REV_LOONGSON3B_R1:
 		case PRID_REV_LOONGSON3B_R2:
@@ -1580,6 +1556,8 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c, unsigned int cpu)
 			__cpu_name[cpu] = "ICT Loongson-3";
 			set_elf_platform(cpu, "loongson3b");
 			set_isa(c, MIPS_CPU_ISA_M64R1);
+			c->ases |= (MIPS_ASE_LOONGSON_MMI | MIPS_ASE_LOONGSON_CAM |
+				MIPS_ASE_LOONGSON_EXT);
 			break;
 		}
 
@@ -1946,6 +1924,8 @@ static inline void cpu_probe_loongson(struct cpuinfo_mips *c, unsigned int cpu)
 		decode_configs(c);
 		c->options |= MIPS_CPU_FTLB | MIPS_CPU_TLBINV | MIPS_CPU_LDPTE;
 		c->writecombine = _CACHE_UNCACHED_ACCELERATED;
+		c->ases |= (MIPS_ASE_LOONGSON_MMI | MIPS_ASE_LOONGSON_CAM |
+			MIPS_ASE_LOONGSON_EXT | MIPS_ASE_LOONGSON_EXT2);
 		break;
 	default:
 		panic("Unknown Loongson Processor ID!");
@@ -1956,14 +1936,29 @@ static inline void cpu_probe_loongson(struct cpuinfo_mips *c, unsigned int cpu)
 static inline void cpu_probe_ingenic(struct cpuinfo_mips *c, unsigned int cpu)
 {
 	decode_configs(c);
-	/* JZRISC does not implement the CP0 counter. */
+
+	/*
+	 * XBurst misses a config2 register, so config3 decode was skipped in
+	 * decode_configs().
+	 */
+	decode_config3(c);
+
+	/* XBurst does not implement the CP0 counter. */
 	c->options &= ~MIPS_CPU_COUNTER;
 	BUG_ON(!__builtin_constant_p(cpu_has_counter) || cpu_has_counter);
+
 	switch (c->processor_id & PRID_IMP_MASK) {
-	case PRID_IMP_JZRISC:
-		c->cputype = CPU_JZRISC;
+	case PRID_IMP_XBURST:
+		c->cputype = CPU_XBURST;
 		c->writecombine = _CACHE_UNCACHED_ACCELERATED;
 		__cpu_name[cpu] = "Ingenic JZRISC";
+		/*
+		 * The XBurst core by default attempts to avoid branch target
+		 * buffer lookups by detecting & special casing loops. This
+		 * feature will cause BogoMIPS and lpj calculate in error.
+		 * Set cp0 config7 bit 4 to disable this feature.
+		 */
+		set_c0_config7(MIPS_CONF7_BTB_LOOP_EN);
 		break;
 	default:
 		panic("Unknown Ingenic Processor ID!");
diff --git a/arch/mips/kernel/genex.S b/arch/mips/kernel/genex.S
index 398b905b027d..efde27c99414 100644
--- a/arch/mips/kernel/genex.S
+++ b/arch/mips/kernel/genex.S
@@ -32,9 +32,6 @@
 NESTED(except_vec3_generic, 0, sp)
 	.set	push
 	.set	noat
-#if R5432_CP0_INTERRUPT_WAR
-	mfc0	k0, CP0_INDEX
-#endif
 	mfc0	k1, CP0_CAUSE
 	andi	k1, k1, 0x7c
 #ifdef CONFIG_64BIT
diff --git a/arch/mips/kernel/idle.c b/arch/mips/kernel/idle.c
index 7388f1374d5f..eb2afc0b8db1 100644
--- a/arch/mips/kernel/idle.c
+++ b/arch/mips/kernel/idle.c
@@ -151,7 +151,6 @@ void __init check_wait(void)
 		cpu_wait = r39xx_wait;
 		break;
 	case CPU_R4200:
-/*	case CPU_R4300: */
 	case CPU_R4600:
 	case CPU_R4640:
 	case CPU_R4650:
@@ -173,7 +172,7 @@ void __init check_wait(void)
 	case CPU_CAVIUM_OCTEON_PLUS:
 	case CPU_CAVIUM_OCTEON2:
 	case CPU_CAVIUM_OCTEON3:
-	case CPU_JZRISC:
+	case CPU_XBURST:
 	case CPU_LOONGSON1:
 	case CPU_XLR:
 	case CPU_XLP:
diff --git a/arch/mips/kernel/proc.c b/arch/mips/kernel/proc.c
index b2de408a259e..f8d36710cd58 100644
--- a/arch/mips/kernel/proc.c
+++ b/arch/mips/kernel/proc.c
@@ -124,6 +124,10 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 	if (cpu_has_eva)	seq_printf(m, "%s", " eva");
 	if (cpu_has_htw)	seq_printf(m, "%s", " htw");
 	if (cpu_has_xpa)	seq_printf(m, "%s", " xpa");
+	if (cpu_has_loongson_mmi)	seq_printf(m, "%s", " loongson-mmi");
+	if (cpu_has_loongson_cam)	seq_printf(m, "%s", " loongson-cam");
+	if (cpu_has_loongson_ext)	seq_printf(m, "%s", " loongson-ext");
+	if (cpu_has_loongson_ext2)	seq_printf(m, "%s", " loongson-ext2");
 	seq_printf(m, "\n");
 
 	if (cpu_has_mmips) {
diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S
index d9434cd0f568..b449b68662a9 100644
--- a/arch/mips/kernel/scall32-o32.S
+++ b/arch/mips/kernel/scall32-o32.S
@@ -217,7 +217,7 @@ einval: li	v0, -ENOSYS
 #define sys_sched_getaffinity	mipsmt_sys_sched_getaffinity
 #endif /* CONFIG_MIPS_MT_FPAFF */
 
-#define __SYSCALL(nr, entry, nargs)	PTR entry
+#define __SYSCALL(nr, entry) 	PTR entry
 	.align	2
 	.type	sys_call_table, @object
 EXPORT(sys_call_table)
diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
index c761ddfed9e6..35d8c86b160e 100644
--- a/arch/mips/kernel/scall64-n32.S
+++ b/arch/mips/kernel/scall64-n32.S
@@ -101,7 +101,7 @@ not_n32_scall:
 
 	END(handle_sysn32)
 
-#define __SYSCALL(nr, entry, nargs) PTR entry
+#define __SYSCALL(nr, entry)	PTR entry
 	.type	sysn32_call_table, @object
 EXPORT(sysn32_call_table)
 #include <asm/syscall_table_64_n32.h>
diff --git a/arch/mips/kernel/scall64-n64.S b/arch/mips/kernel/scall64-n64.S
index 727fb8a1b0eb..23b2e2b1609c 100644
--- a/arch/mips/kernel/scall64-n64.S
+++ b/arch/mips/kernel/scall64-n64.S
@@ -109,7 +109,7 @@ illegal_syscall:
 	j	n64_syscall_exit
 	END(handle_sys64)
 
-#define __SYSCALL(nr, entry, nargs) PTR entry
+#define __SYSCALL(nr, entry)	PTR entry
 	.align	3
 	.type	sys_call_table, @object
 EXPORT(sys_call_table)
diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
index feb2653490df..41df8221bb8f 100644
--- a/arch/mips/kernel/scall64-o32.S
+++ b/arch/mips/kernel/scall64-o32.S
@@ -213,7 +213,7 @@ einval: li	v0, -ENOSYS
 	jr	ra
 	END(sys32_syscall)
 
-#define __SYSCALL(nr, entry, nargs) PTR entry
+#define __SYSCALL(nr, entry)	PTR entry
 	.align	3
 	.type	sys32_call_table,@object
 EXPORT(sys32_call_table)
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index ab349d2381c3..b8249c233754 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -63,8 +63,6 @@ unsigned long mips_machtype __read_mostly = MACH_UNKNOWN;
 
 EXPORT_SYMBOL(mips_machtype);
 
-struct boot_mem_map boot_mem_map;
-
 static char __initdata command_line[COMMAND_LINE_SIZE];
 char __initdata arcs_cmdline[COMMAND_LINE_SIZE];
 
@@ -76,7 +74,7 @@ static char __initdata builtin_cmdline[COMMAND_LINE_SIZE] = CONFIG_CMDLINE;
  * mips_io_port_base is the begin of the address space to which x86 style
  * I/O ports are mapped.
  */
-const unsigned long mips_io_port_base = -1;
+unsigned long mips_io_port_base = -1;
 EXPORT_SYMBOL(mips_io_port_base);
 
 static struct resource code_resource = { .name = "Kernel code", };
@@ -92,8 +90,10 @@ EXPORT_SYMBOL(ARCH_PFN_OFFSET);
 
 void __init add_memory_region(phys_addr_t start, phys_addr_t size, long type)
 {
-	int x = boot_mem_map.nr_map;
-	int i;
+	/*
+	 * Note: This function only exists for historical reason,
+	 * new code should use memblock_add or memblock_add_node instead.
+	 */
 
 	/*
 	 * If the region reaches the top of the physical address space, adjust
@@ -108,38 +108,20 @@ void __init add_memory_region(phys_addr_t start, phys_addr_t size, long type)
 		return;
 	}
 
-	/*
-	 * Try to merge with existing entry, if any.
-	 */
-	for (i = 0; i < boot_mem_map.nr_map; i++) {
-		struct boot_mem_map_entry *entry = boot_mem_map.map + i;
-		unsigned long top;
-
-		if (entry->type != type)
-			continue;
-
-		if (start + size < entry->addr)
-			continue;			/* no overlap */
+	memblock_add(start, size);
+	/* Reserve any memory except the ordinary RAM ranges. */
+	switch (type) {
+	case BOOT_MEM_RAM:
+		break;
 
-		if (entry->addr + entry->size < start)
-			continue;			/* no overlap */
+	case BOOT_MEM_NOMAP: /* Discard the range from the system. */
+		memblock_remove(start, size);
+		break;
 
-		top = max(entry->addr + entry->size, start + size);
-		entry->addr = min(entry->addr, start);
-		entry->size = top - entry->addr;
-
-		return;
+	default: /* Reserve the rest of the memory types at boot time */
+		memblock_reserve(start, size);
+		break;
 	}
-
-	if (boot_mem_map.nr_map == BOOT_MEM_MAP_MAX) {
-		pr_err("Ooops! Too many entries in the memory map!\n");
-		return;
-	}
-
-	boot_mem_map.map[x].addr = start;
-	boot_mem_map.map[x].size = size;
-	boot_mem_map.map[x].type = type;
-	boot_mem_map.nr_map++;
 }
 
 void __init detect_memory_region(phys_addr_t start, phys_addr_t sz_min, phys_addr_t sz_max)
@@ -161,70 +143,6 @@ void __init detect_memory_region(phys_addr_t start, phys_addr_t sz_min, phys_add
 	add_memory_region(start, size, BOOT_MEM_RAM);
 }
 
-static bool __init __maybe_unused memory_region_available(phys_addr_t start,
-							  phys_addr_t size)
-{
-	int i;
-	bool in_ram = false, free = true;
-
-	for (i = 0; i < boot_mem_map.nr_map; i++) {
-		phys_addr_t start_, end_;
-
-		start_ = boot_mem_map.map[i].addr;
-		end_ = boot_mem_map.map[i].addr + boot_mem_map.map[i].size;
-
-		switch (boot_mem_map.map[i].type) {
-		case BOOT_MEM_RAM:
-			if (start >= start_ && start + size <= end_)
-				in_ram = true;
-			break;
-		case BOOT_MEM_RESERVED:
-		case BOOT_MEM_NOMAP:
-			if ((start >= start_ && start < end_) ||
-			    (start < start_ && start + size >= start_))
-				free = false;
-			break;
-		default:
-			continue;
-		}
-	}
-
-	return in_ram && free;
-}
-
-static void __init print_memory_map(void)
-{
-	int i;
-	const int field = 2 * sizeof(unsigned long);
-
-	for (i = 0; i < boot_mem_map.nr_map; i++) {
-		printk(KERN_INFO " memory: %0*Lx @ %0*Lx ",
-		       field, (unsigned long long) boot_mem_map.map[i].size,
-		       field, (unsigned long long) boot_mem_map.map[i].addr);
-
-		switch (boot_mem_map.map[i].type) {
-		case BOOT_MEM_RAM:
-			printk(KERN_CONT "(usable)\n");
-			break;
-		case BOOT_MEM_INIT_RAM:
-			printk(KERN_CONT "(usable after init)\n");
-			break;
-		case BOOT_MEM_ROM_DATA:
-			printk(KERN_CONT "(ROM data)\n");
-			break;
-		case BOOT_MEM_RESERVED:
-			printk(KERN_CONT "(reserved)\n");
-			break;
-		case BOOT_MEM_NOMAP:
-			printk(KERN_CONT "(nomap)\n");
-			break;
-		default:
-			printk(KERN_CONT "type %lu\n", boot_mem_map.map[i].type);
-			break;
-		}
-	}
-}
-
 /*
  * Manage initrd
  */
@@ -376,8 +294,11 @@ static void __init bootmem_init(void)
 
 static void __init bootmem_init(void)
 {
-	phys_addr_t ramstart = PHYS_ADDR_MAX;
-	int i;
+	struct memblock_region *mem;
+	phys_addr_t ramstart, ramend;
+
+	ramstart = memblock_start_of_DRAM();
+	ramend = memblock_end_of_DRAM();
 
 	/*
 	 * Sanity check any INITRD first. We don't take it into account
@@ -391,122 +312,66 @@ static void __init bootmem_init(void)
 	memblock_reserve(__pa_symbol(&_text),
 			__pa_symbol(&_end) - __pa_symbol(&_text));
 
+	/* max_low_pfn is not a number of pages but the end pfn of low mem */
+
+#ifdef CONFIG_MIPS_AUTO_PFN_OFFSET
+	ARCH_PFN_OFFSET = PFN_UP(ramstart);
+#else
 	/*
-	 * max_low_pfn is not a number of pages. The number of pages
-	 * of the system is given by 'max_low_pfn - min_low_pfn'.
+	 * Reserve any memory between the start of RAM and PHYS_OFFSET
 	 */
-	min_low_pfn = ~0UL;
-	max_low_pfn = 0;
-
-	/* Find the highest and lowest page frame numbers we have available. */
-	for (i = 0; i < boot_mem_map.nr_map; i++) {
-		unsigned long start, end;
-
-		if (boot_mem_map.map[i].type != BOOT_MEM_RAM)
-			continue;
+	if (ramstart > PHYS_OFFSET)
+		memblock_reserve(PHYS_OFFSET, PFN_UP(ramstart) - PHYS_OFFSET);
 
-		start = PFN_UP(boot_mem_map.map[i].addr);
-		end = PFN_DOWN(boot_mem_map.map[i].addr
-				+ boot_mem_map.map[i].size);
+	if (PFN_UP(ramstart) > ARCH_PFN_OFFSET) {
+		pr_info("Wasting %lu bytes for tracking %lu unused pages\n",
+			(unsigned long)((PFN_UP(ramstart) - ARCH_PFN_OFFSET) * sizeof(struct page)),
+			(unsigned long)(PFN_UP(ramstart) - ARCH_PFN_OFFSET));
+	}
+#endif
 
-		ramstart = min(ramstart, boot_mem_map.map[i].addr);
+	min_low_pfn = ARCH_PFN_OFFSET;
+	max_pfn = PFN_DOWN(ramend);
+	for_each_memblock(memory, mem) {
+		unsigned long start = memblock_region_memory_base_pfn(mem);
+		unsigned long end = memblock_region_memory_end_pfn(mem);
 
-#ifndef CONFIG_HIGHMEM
 		/*
 		 * Skip highmem here so we get an accurate max_low_pfn if low
 		 * memory stops short of high memory.
 		 * If the region overlaps HIGHMEM_START, end is clipped so
 		 * max_pfn excludes the highmem portion.
 		 */
+		if (memblock_is_nomap(mem))
+			continue;
 		if (start >= PFN_DOWN(HIGHMEM_START))
 			continue;
 		if (end > PFN_DOWN(HIGHMEM_START))
 			end = PFN_DOWN(HIGHMEM_START);
-#endif
-
 		if (end > max_low_pfn)
 			max_low_pfn = end;
-		if (start < min_low_pfn)
-			min_low_pfn = start;
 	}
 
 	if (min_low_pfn >= max_low_pfn)
 		panic("Incorrect memory mapping !!!");
 
-#ifdef CONFIG_MIPS_AUTO_PFN_OFFSET
-	ARCH_PFN_OFFSET = PFN_UP(ramstart);
-#else
-	/*
-	 * Reserve any memory between the start of RAM and PHYS_OFFSET
-	 */
-	if (ramstart > PHYS_OFFSET) {
-		add_memory_region(PHYS_OFFSET, ramstart - PHYS_OFFSET,
-				  BOOT_MEM_RESERVED);
-		memblock_reserve(PHYS_OFFSET, ramstart - PHYS_OFFSET);
-	}
-
-	if (min_low_pfn > ARCH_PFN_OFFSET) {
-		pr_info("Wasting %lu bytes for tracking %lu unused pages\n",
-			(min_low_pfn - ARCH_PFN_OFFSET) * sizeof(struct page),
-			min_low_pfn - ARCH_PFN_OFFSET);
-	} else if (ARCH_PFN_OFFSET - min_low_pfn > 0UL) {
-		pr_info("%lu free pages won't be used\n",
-			ARCH_PFN_OFFSET - min_low_pfn);
-	}
-	min_low_pfn = ARCH_PFN_OFFSET;
-#endif
-
-	/*
-	 * Determine low and high memory ranges
-	 */
-	max_pfn = max_low_pfn;
-	if (max_low_pfn > PFN_DOWN(HIGHMEM_START)) {
+	if (max_pfn > PFN_DOWN(HIGHMEM_START)) {
 #ifdef CONFIG_HIGHMEM
 		highstart_pfn = PFN_DOWN(HIGHMEM_START);
-		highend_pfn = max_low_pfn;
-#endif
+		highend_pfn = max_pfn;
+#else
 		max_low_pfn = PFN_DOWN(HIGHMEM_START);
-	}
-
-	/* Install all valid RAM ranges to the memblock memory region */
-	for (i = 0; i < boot_mem_map.nr_map; i++) {
-		unsigned long start, end;
-
-		start = PFN_UP(boot_mem_map.map[i].addr);
-		end = PFN_DOWN(boot_mem_map.map[i].addr
-				+ boot_mem_map.map[i].size);
-
-		if (start < min_low_pfn)
-			start = min_low_pfn;
-#ifndef CONFIG_HIGHMEM
-		/* Ignore highmem regions if highmem is unsupported */
-		if (end > max_low_pfn)
-			end = max_low_pfn;
+		max_pfn = max_low_pfn;
 #endif
-		if (end <= start)
-			continue;
-
-		memblock_add_node(PFN_PHYS(start), PFN_PHYS(end - start), 0);
+	}
 
-		/* Reserve any memory except the ordinary RAM ranges. */
-		switch (boot_mem_map.map[i].type) {
-		case BOOT_MEM_RAM:
-			break;
-		case BOOT_MEM_NOMAP: /* Discard the range from the system. */
-			memblock_remove(PFN_PHYS(start), PFN_PHYS(end - start));
-			continue;
-		default: /* Reserve the rest of the memory types at boot time */
-			memblock_reserve(PFN_PHYS(start), PFN_PHYS(end - start));
-			break;
-		}
 
-		/*
-		 * In any case the added to the memblock memory regions
-		 * (highmem/lowmem, available/reserved, etc) are considered
-		 * as present, so inform sparsemem about them.
-		 */
-		memory_present(0, start, end);
-	}
+	/*
+	 * In any case the added to the memblock memory regions
+	 * (highmem/lowmem, available/reserved, etc) are considered
+	 * as present, so inform sparsemem about them.
+	 */
+	memblocks_present();
 
 	/*
 	 * Reserve initrd memory if needed.
@@ -528,8 +393,9 @@ static int __init early_parse_mem(char *p)
 	 * size.
 	 */
 	if (usermem == 0) {
-		boot_mem_map.nr_map = 0;
 		usermem = 1;
+		memblock_remove(memblock_start_of_DRAM(),
+			memblock_end_of_DRAM() - memblock_start_of_DRAM());
 	}
 	start = 0;
 	size = memparse(p, &p);
@@ -586,14 +452,13 @@ early_param("memmap", early_parse_memmap);
 unsigned long setup_elfcorehdr, setup_elfcorehdr_size;
 static int __init early_parse_elfcorehdr(char *p)
 {
-	int i;
+	struct memblock_region *mem;
 
 	setup_elfcorehdr = memparse(p, &p);
 
-	for (i = 0; i < boot_mem_map.nr_map; i++) {
-		unsigned long start = boot_mem_map.map[i].addr;
-		unsigned long end = (boot_mem_map.map[i].addr +
-				     boot_mem_map.map[i].size);
+	 for_each_memblock(memory, mem) {
+		unsigned long start = mem->base;
+		unsigned long end = start + mem->size;
 		if (setup_elfcorehdr >= start && setup_elfcorehdr < end) {
 			/*
 			 * Reserve from the elf core header to the end of
@@ -613,47 +478,20 @@ static int __init early_parse_elfcorehdr(char *p)
 early_param("elfcorehdr", early_parse_elfcorehdr);
 #endif
 
-static void __init arch_mem_addpart(phys_addr_t mem, phys_addr_t end, int type)
-{
-	phys_addr_t size;
-	int i;
-
-	size = end - mem;
-	if (!size)
-		return;
-
-	/* Make sure it is in the boot_mem_map */
-	for (i = 0; i < boot_mem_map.nr_map; i++) {
-		if (mem >= boot_mem_map.map[i].addr &&
-		    mem < (boot_mem_map.map[i].addr +
-			   boot_mem_map.map[i].size))
-			return;
-	}
-	add_memory_region(mem, size, type);
-}
-
 #ifdef CONFIG_KEXEC
-static inline unsigned long long get_total_mem(void)
-{
-	unsigned long long total;
-
-	total = max_pfn - min_low_pfn;
-	return total << PAGE_SHIFT;
-}
-
 static void __init mips_parse_crashkernel(void)
 {
 	unsigned long long total_mem;
 	unsigned long long crash_size, crash_base;
 	int ret;
 
-	total_mem = get_total_mem();
+	total_mem = memblock_phys_mem_size();
 	ret = parse_crashkernel(boot_command_line, total_mem,
 				&crash_size, &crash_base);
 	if (ret != 0 || crash_size <= 0)
 		return;
 
-	if (!memory_region_available(crash_base, crash_size)) {
+	if (!memblock_find_in_range(crash_base, crash_base + crash_size, crash_size, 0)) {
 		pr_warn("Invalid memory region reserved for crash kernel\n");
 		return;
 	}
@@ -686,6 +524,17 @@ static void __init request_crashkernel(struct resource *res)
 }
 #endif /* !defined(CONFIG_KEXEC)  */
 
+static void __init check_kernel_sections_mem(void)
+{
+	phys_addr_t start = PFN_PHYS(PFN_DOWN(__pa_symbol(&_text)));
+	phys_addr_t size = PFN_PHYS(PFN_UP(__pa_symbol(&_end))) - start;
+
+	if (!memblock_is_region_memory(start, size)) {
+		pr_info("Kernel sections are not in the memory maps\n");
+		memblock_add(start, size);
+	}
+}
+
 #define USE_PROM_CMDLINE	IS_ENABLED(CONFIG_MIPS_CMDLINE_FROM_BOOTLOADER)
 #define USE_DTB_CMDLINE		IS_ENABLED(CONFIG_MIPS_CMDLINE_FROM_DTB)
 #define EXTEND_WITH_PROM	IS_ENABLED(CONFIG_MIPS_CMDLINE_DTB_EXTEND)
@@ -731,25 +580,6 @@ static void __init arch_mem_init(char **cmdline_p)
 	plat_mem_setup();
 	memblock_set_bottom_up(true);
 
-	/*
-	 * Make sure all kernel memory is in the maps.  The "UP" and
-	 * "DOWN" are opposite for initdata since if it crosses over
-	 * into another memory section you don't want that to be
-	 * freed when the initdata is freed.
-	 */
-	arch_mem_addpart(PFN_DOWN(__pa_symbol(&_text)) << PAGE_SHIFT,
-			 PFN_UP(__pa_symbol(&_edata)) << PAGE_SHIFT,
-			 BOOT_MEM_RAM);
-	arch_mem_addpart(PFN_UP(__pa_symbol(&__init_begin)) << PAGE_SHIFT,
-			 PFN_DOWN(__pa_symbol(&__init_end)) << PAGE_SHIFT,
-			 BOOT_MEM_INIT_RAM);
-	arch_mem_addpart(PFN_DOWN(__pa_symbol(&__bss_start)) << PAGE_SHIFT,
-			 PFN_UP(__pa_symbol(&__bss_stop)) << PAGE_SHIFT,
-			 BOOT_MEM_RAM);
-
-	pr_info("Determined physical RAM map:\n");
-	print_memory_map();
-
 #if defined(CONFIG_CMDLINE_BOOL) && defined(CONFIG_CMDLINE_OVERRIDE)
 	strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE);
 #else
@@ -783,14 +613,17 @@ static void __init arch_mem_init(char **cmdline_p)
 
 	parse_early_param();
 
-	if (usermem) {
-		pr_info("User-defined physical RAM map:\n");
-		print_memory_map();
-	}
+	if (usermem)
+		pr_info("User-defined physical RAM map overwrite\n");
+
+	check_kernel_sections_mem();
 
 	early_init_fdt_reserve_self();
 	early_init_fdt_scan_reserved_mem();
 
+#ifndef CONFIG_NUMA
+	memblock_set_node(0, PHYS_ADDR_MAX, &memblock.memory, 0);
+#endif
 	bootmem_init();
 
 	/*
@@ -830,12 +663,12 @@ static void __init arch_mem_init(char **cmdline_p)
 
 	memblock_dump_all();
 
-	early_memtest(PFN_PHYS(min_low_pfn), PFN_PHYS(max_low_pfn));
+	early_memtest(PFN_PHYS(ARCH_PFN_OFFSET), PFN_PHYS(max_low_pfn));
 }
 
 static void __init resource_init(void)
 {
-	int i;
+	struct memblock_region *region;
 
 	if (UNCAC_BASE != IO_BASE)
 		return;
@@ -847,16 +680,10 @@ static void __init resource_init(void)
 	bss_resource.start = __pa_symbol(&__bss_start);
 	bss_resource.end = __pa_symbol(&__bss_stop) - 1;
 
-	for (i = 0; i < boot_mem_map.nr_map; i++) {
+	for_each_memblock(memory, region) {
+		phys_addr_t start = PFN_PHYS(memblock_region_memory_base_pfn(region));
+		phys_addr_t end = PFN_PHYS(memblock_region_memory_end_pfn(region)) - 1;
 		struct resource *res;
-		unsigned long start, end;
-
-		start = boot_mem_map.map[i].addr;
-		end = boot_mem_map.map[i].addr + boot_mem_map.map[i].size - 1;
-		if (start >= HIGHMEM_START)
-			continue;
-		if (end >= HIGHMEM_START)
-			end = HIGHMEM_START - 1;
 
 		res = memblock_alloc(sizeof(struct resource), SMP_CACHE_BYTES);
 		if (!res)
@@ -865,20 +692,8 @@ static void __init resource_init(void)
 
 		res->start = start;
 		res->end = end;
-		res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
-
-		switch (boot_mem_map.map[i].type) {
-		case BOOT_MEM_RAM:
-		case BOOT_MEM_INIT_RAM:
-		case BOOT_MEM_ROM_DATA:
-			res->name = "System RAM";
-			res->flags |= IORESOURCE_SYSRAM;
-			break;
-		case BOOT_MEM_RESERVED:
-		case BOOT_MEM_NOMAP:
-		default:
-			res->name = "reserved";
-		}
+		res->flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
+		res->name = "System RAM";
 
 		request_resource(&iomem_resource, res);
 
diff --git a/arch/mips/kernel/syscall.c b/arch/mips/kernel/syscall.c
index b6dc78ad5d8c..b0e25e913bdb 100644
--- a/arch/mips/kernel/syscall.c
+++ b/arch/mips/kernel/syscall.c
@@ -132,6 +132,7 @@ static inline int mips_atomic_set(unsigned long addr, unsigned long new)
 		  [efault] "i" (-EFAULT)
 		: "memory");
 	} else if (cpu_has_llsc) {
+		loongson_llsc_mb();
 		__asm__ __volatile__ (
 		"	.set	push					\n"
 		"	.set	"MIPS_ISA_ARCH_LEVEL"			\n"
diff --git a/arch/mips/kernel/syscalls/syscalltbl.sh b/arch/mips/kernel/syscalls/syscalltbl.sh
index acd338d33bbe..1e2570740c20 100644
--- a/arch/mips/kernel/syscalls/syscalltbl.sh
+++ b/arch/mips/kernel/syscalls/syscalltbl.sh
@@ -13,10 +13,10 @@ emit() {
 	t_entry="$3"
 
 	while [ $t_nxt -lt $t_nr ]; do
-		printf "__SYSCALL(%s, sys_ni_syscall, )\n" "${t_nxt}"
+		printf "__SYSCALL(%s,sys_ni_syscall)\n" "${t_nxt}"
 		t_nxt=$((t_nxt+1))
 	done
-	printf "__SYSCALL(%s, %s, )\n" "${t_nxt}" "${t_entry}"
+	printf "__SYSCALL(%s,%s)\n" "${t_nxt}" "${t_entry}"
 }
 
 grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
diff --git a/arch/mips/kernel/vdso.c b/arch/mips/kernel/vdso.c
index 3a372686ffca..bc35f8499111 100644
--- a/arch/mips/kernel/vdso.c
+++ b/arch/mips/kernel/vdso.c
@@ -20,9 +20,12 @@
 #include <asm/mips-cps.h>
 #include <asm/page.h>
 #include <asm/vdso.h>
+#include <vdso/helpers.h>
+#include <vdso/vsyscall.h>
 
 /* Kernel-provided data used by the VDSO. */
-static union mips_vdso_data vdso_data __page_aligned_data;
+static union mips_vdso_data mips_vdso_data __page_aligned_data;
+struct vdso_data *vdso_data = mips_vdso_data.data;
 
 /*
  * Mapping for the VDSO data/GIC pages. The real pages are mapped manually, as
@@ -66,34 +69,6 @@ static int __init init_vdso(void)
 }
 subsys_initcall(init_vdso);
 
-void update_vsyscall(struct timekeeper *tk)
-{
-	vdso_data_write_begin(&vdso_data);
-
-	vdso_data.xtime_sec = tk->xtime_sec;
-	vdso_data.xtime_nsec = tk->tkr_mono.xtime_nsec;
-	vdso_data.wall_to_mono_sec = tk->wall_to_monotonic.tv_sec;
-	vdso_data.wall_to_mono_nsec = tk->wall_to_monotonic.tv_nsec;
-	vdso_data.cs_shift = tk->tkr_mono.shift;
-
-	vdso_data.clock_mode = tk->tkr_mono.clock->archdata.vdso_clock_mode;
-	if (vdso_data.clock_mode != VDSO_CLOCK_NONE) {
-		vdso_data.cs_mult = tk->tkr_mono.mult;
-		vdso_data.cs_cycle_last = tk->tkr_mono.cycle_last;
-		vdso_data.cs_mask = tk->tkr_mono.mask;
-	}
-
-	vdso_data_write_end(&vdso_data);
-}
-
-void update_vsyscall_tz(void)
-{
-	if (vdso_data.clock_mode != VDSO_CLOCK_NONE) {
-		vdso_data.tz_minuteswest = sys_tz.tz_minuteswest;
-		vdso_data.tz_dsttime = sys_tz.tz_dsttime;
-	}
-}
-
 static unsigned long vdso_base(void)
 {
 	unsigned long base;
@@ -163,7 +138,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
 	 */
 	if (cpu_has_dc_aliases) {
 		base = __ALIGN_MASK(base, shm_align_mask);
-		base += ((unsigned long)&vdso_data - gic_size) & shm_align_mask;
+		base += ((unsigned long)vdso_data - gic_size) & shm_align_mask;
 	}
 
 	data_addr = base + gic_size;
@@ -189,7 +164,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
 
 	/* Map data page. */
 	ret = remap_pfn_range(vma, data_addr,
-			      virt_to_phys(&vdso_data) >> PAGE_SHIFT,
+			      virt_to_phys(vdso_data) >> PAGE_SHIFT,
 			      PAGE_SIZE, PAGE_READONLY);
 	if (ret)
 		goto out;