MIPS: init: Drop boot_mem_map
boot_mem_map was introduced very early and cannot handle memory maps with nid. Nowadays, memblock can exactly replace boot_mem_map. Detect pfn info and setup resources with memblock maps. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> [paul.burton@mips.com: Fix size calculation in check_kernel_sections_mem] Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org Cc: yasha.che3@gmail.com Cc: aurelien@aurel32.net Cc: sfr@canb.auug.org.au Cc: fancer.lancer@gmail.com Cc: matt.redfearn@mips.com Cc: chenhc@lemote.com
This commit is contained in:
Jiaxun Yang
Paul Burton
Родитель
a5718fe8f7
Коммит
a94e4f24ec
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@ -88,28 +88,12 @@ const char *get_system_type(void);
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extern unsigned long mips_machtype;
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#define BOOT_MEM_MAP_MAX 32
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#define BOOT_MEM_RAM 1
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#define BOOT_MEM_ROM_DATA 2
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#define BOOT_MEM_RESERVED 3
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#define BOOT_MEM_INIT_RAM 4
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#define BOOT_MEM_NOMAP 5
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/*
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* A memory map that's built upon what was determined
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* or specified on the command line.
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*/
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struct boot_mem_map {
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int nr_map;
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struct boot_mem_map_entry {
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phys_addr_t addr; /* start of memory segment */
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phys_addr_t size; /* size of memory segment */
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long type; /* type of memory segment */
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} map[BOOT_MEM_MAP_MAX];
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};
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extern struct boot_mem_map boot_mem_map;
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extern void add_memory_region(phys_addr_t start, phys_addr_t size, long type);
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extern void detect_memory_region(phys_addr_t start, phys_addr_t sz_min, phys_addr_t sz_max);
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@ -63,8 +63,6 @@ unsigned long mips_machtype __read_mostly = MACH_UNKNOWN;
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EXPORT_SYMBOL(mips_machtype);
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struct boot_mem_map boot_mem_map;
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static char __initdata command_line[COMMAND_LINE_SIZE];
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char __initdata arcs_cmdline[COMMAND_LINE_SIZE];
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@ -92,8 +90,10 @@ EXPORT_SYMBOL(ARCH_PFN_OFFSET);
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void __init add_memory_region(phys_addr_t start, phys_addr_t size, long type)
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{
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int x = boot_mem_map.nr_map;
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int i;
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/*
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* Note: This function only exists for historical reason,
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* new code should use memblock_add or memblock_add_node instead.
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*/
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/*
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* If the region reaches the top of the physical address space, adjust
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@ -108,38 +108,20 @@ void __init add_memory_region(phys_addr_t start, phys_addr_t size, long type)
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return;
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}
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/*
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* Try to merge with existing entry, if any.
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*/
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for (i = 0; i < boot_mem_map.nr_map; i++) {
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struct boot_mem_map_entry *entry = boot_mem_map.map + i;
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unsigned long top;
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memblock_add(start, size);
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/* Reserve any memory except the ordinary RAM ranges. */
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switch (type) {
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case BOOT_MEM_RAM:
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break;
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if (entry->type != type)
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continue;
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case BOOT_MEM_NOMAP: /* Discard the range from the system. */
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memblock_remove(start, size);
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break;
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if (start + size < entry->addr)
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continue; /* no overlap */
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if (entry->addr + entry->size < start)
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continue; /* no overlap */
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top = max(entry->addr + entry->size, start + size);
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entry->addr = min(entry->addr, start);
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entry->size = top - entry->addr;
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return;
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default: /* Reserve the rest of the memory types at boot time */
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memblock_reserve(start, size);
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break;
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}
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if (boot_mem_map.nr_map == BOOT_MEM_MAP_MAX) {
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pr_err("Ooops! Too many entries in the memory map!\n");
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return;
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}
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boot_mem_map.map[x].addr = start;
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boot_mem_map.map[x].size = size;
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boot_mem_map.map[x].type = type;
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boot_mem_map.nr_map++;
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}
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void __init detect_memory_region(phys_addr_t start, phys_addr_t sz_min, phys_addr_t sz_max)
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@ -161,70 +143,6 @@ void __init detect_memory_region(phys_addr_t start, phys_addr_t sz_min, phys_add
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add_memory_region(start, size, BOOT_MEM_RAM);
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}
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static bool __init __maybe_unused memory_region_available(phys_addr_t start,
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phys_addr_t size)
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{
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int i;
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bool in_ram = false, free = true;
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for (i = 0; i < boot_mem_map.nr_map; i++) {
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phys_addr_t start_, end_;
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start_ = boot_mem_map.map[i].addr;
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end_ = boot_mem_map.map[i].addr + boot_mem_map.map[i].size;
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switch (boot_mem_map.map[i].type) {
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case BOOT_MEM_RAM:
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if (start >= start_ && start + size <= end_)
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in_ram = true;
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break;
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case BOOT_MEM_RESERVED:
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case BOOT_MEM_NOMAP:
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if ((start >= start_ && start < end_) ||
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(start < start_ && start + size >= start_))
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free = false;
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break;
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default:
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continue;
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}
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}
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return in_ram && free;
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}
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static void __init print_memory_map(void)
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{
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int i;
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const int field = 2 * sizeof(unsigned long);
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for (i = 0; i < boot_mem_map.nr_map; i++) {
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printk(KERN_INFO " memory: %0*Lx @ %0*Lx ",
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field, (unsigned long long) boot_mem_map.map[i].size,
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field, (unsigned long long) boot_mem_map.map[i].addr);
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switch (boot_mem_map.map[i].type) {
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case BOOT_MEM_RAM:
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printk(KERN_CONT "(usable)\n");
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break;
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case BOOT_MEM_INIT_RAM:
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printk(KERN_CONT "(usable after init)\n");
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break;
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case BOOT_MEM_ROM_DATA:
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printk(KERN_CONT "(ROM data)\n");
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break;
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case BOOT_MEM_RESERVED:
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printk(KERN_CONT "(reserved)\n");
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break;
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case BOOT_MEM_NOMAP:
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printk(KERN_CONT "(nomap)\n");
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break;
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default:
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printk(KERN_CONT "type %lu\n", boot_mem_map.map[i].type);
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break;
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}
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}
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}
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/*
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* Manage initrd
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*/
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@ -376,8 +294,11 @@ static void __init bootmem_init(void)
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static void __init bootmem_init(void)
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{
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phys_addr_t ramstart = PHYS_ADDR_MAX;
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int i;
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struct memblock_region *mem;
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phys_addr_t ramstart, ramend;
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ramstart = memblock_start_of_DRAM();
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ramend = memblock_end_of_DRAM();
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/*
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* Sanity check any INITRD first. We don't take it into account
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@ -391,47 +312,7 @@ static void __init bootmem_init(void)
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memblock_reserve(__pa_symbol(&_text),
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__pa_symbol(&_end) - __pa_symbol(&_text));
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/*
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* max_low_pfn is not a number of pages. The number of pages
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* of the system is given by 'max_low_pfn - min_low_pfn'.
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*/
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min_low_pfn = ~0UL;
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max_low_pfn = 0;
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/* Find the highest and lowest page frame numbers we have available. */
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for (i = 0; i < boot_mem_map.nr_map; i++) {
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unsigned long start, end;
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if (boot_mem_map.map[i].type != BOOT_MEM_RAM)
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continue;
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start = PFN_UP(boot_mem_map.map[i].addr);
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end = PFN_DOWN(boot_mem_map.map[i].addr
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+ boot_mem_map.map[i].size);
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ramstart = min(ramstart, boot_mem_map.map[i].addr);
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#ifndef CONFIG_HIGHMEM
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/*
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* Skip highmem here so we get an accurate max_low_pfn if low
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* memory stops short of high memory.
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* If the region overlaps HIGHMEM_START, end is clipped so
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* max_pfn excludes the highmem portion.
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*/
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if (start >= PFN_DOWN(HIGHMEM_START))
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continue;
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if (end > PFN_DOWN(HIGHMEM_START))
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end = PFN_DOWN(HIGHMEM_START);
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#endif
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if (end > max_low_pfn)
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max_low_pfn = end;
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if (start < min_low_pfn)
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min_low_pfn = start;
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}
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if (min_low_pfn >= max_low_pfn)
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panic("Incorrect memory mapping !!!");
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/* max_low_pfn is not a number of pages but the end pfn of low mem */
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#ifdef CONFIG_MIPS_AUTO_PFN_OFFSET
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ARCH_PFN_OFFSET = PFN_UP(ramstart);
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@ -439,75 +320,59 @@ static void __init bootmem_init(void)
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/*
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* Reserve any memory between the start of RAM and PHYS_OFFSET
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*/
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if (ramstart > PHYS_OFFSET) {
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add_memory_region(PHYS_OFFSET, ramstart - PHYS_OFFSET,
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BOOT_MEM_RESERVED);
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memblock_reserve(PHYS_OFFSET, ramstart - PHYS_OFFSET);
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}
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if (ramstart > PHYS_OFFSET)
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memblock_reserve(PHYS_OFFSET, PFN_UP(ramstart) - PHYS_OFFSET);
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if (min_low_pfn > ARCH_PFN_OFFSET) {
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if (PFN_UP(ramstart) > ARCH_PFN_OFFSET) {
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pr_info("Wasting %lu bytes for tracking %lu unused pages\n",
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(min_low_pfn - ARCH_PFN_OFFSET) * sizeof(struct page),
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min_low_pfn - ARCH_PFN_OFFSET);
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} else if (ARCH_PFN_OFFSET - min_low_pfn > 0UL) {
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pr_info("%lu free pages won't be used\n",
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ARCH_PFN_OFFSET - min_low_pfn);
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(unsigned long)((PFN_UP(ramstart) - ARCH_PFN_OFFSET) * sizeof(struct page)),
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(unsigned long)(PFN_UP(ramstart) - ARCH_PFN_OFFSET));
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}
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#endif
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min_low_pfn = ARCH_PFN_OFFSET;
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#endif
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/*
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* Determine low and high memory ranges
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*/
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max_pfn = max_low_pfn;
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if (max_low_pfn > PFN_DOWN(HIGHMEM_START)) {
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#ifdef CONFIG_HIGHMEM
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highstart_pfn = PFN_DOWN(HIGHMEM_START);
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highend_pfn = max_low_pfn;
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#endif
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max_low_pfn = PFN_DOWN(HIGHMEM_START);
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}
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/* Install all valid RAM ranges to the memblock memory region */
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for (i = 0; i < boot_mem_map.nr_map; i++) {
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unsigned long start, end;
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start = PFN_UP(boot_mem_map.map[i].addr);
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end = PFN_DOWN(boot_mem_map.map[i].addr
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+ boot_mem_map.map[i].size);
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if (start < min_low_pfn)
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start = min_low_pfn;
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#ifndef CONFIG_HIGHMEM
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/* Ignore highmem regions if highmem is unsupported */
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if (end > max_low_pfn)
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end = max_low_pfn;
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#endif
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if (end <= start)
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continue;
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memblock_add_node(PFN_PHYS(start), PFN_PHYS(end - start), 0);
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/* Reserve any memory except the ordinary RAM ranges. */
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switch (boot_mem_map.map[i].type) {
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case BOOT_MEM_RAM:
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break;
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case BOOT_MEM_NOMAP: /* Discard the range from the system. */
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memblock_remove(PFN_PHYS(start), PFN_PHYS(end - start));
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continue;
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default: /* Reserve the rest of the memory types at boot time */
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memblock_reserve(PFN_PHYS(start), PFN_PHYS(end - start));
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break;
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}
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max_pfn = PFN_DOWN(ramend);
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for_each_memblock(memory, mem) {
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unsigned long start = memblock_region_memory_base_pfn(mem);
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unsigned long end = memblock_region_memory_end_pfn(mem);
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/*
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* In any case the added to the memblock memory regions
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* (highmem/lowmem, available/reserved, etc) are considered
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* as present, so inform sparsemem about them.
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* Skip highmem here so we get an accurate max_low_pfn if low
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* memory stops short of high memory.
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* If the region overlaps HIGHMEM_START, end is clipped so
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* max_pfn excludes the highmem portion.
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*/
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memory_present(0, start, end);
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if (memblock_is_nomap(mem))
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continue;
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if (start >= PFN_DOWN(HIGHMEM_START))
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continue;
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if (end > PFN_DOWN(HIGHMEM_START))
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end = PFN_DOWN(HIGHMEM_START);
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if (end > max_low_pfn)
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max_low_pfn = end;
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}
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if (min_low_pfn >= max_low_pfn)
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panic("Incorrect memory mapping !!!");
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if (max_pfn > PFN_DOWN(HIGHMEM_START)) {
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#ifdef CONFIG_HIGHMEM
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highstart_pfn = PFN_DOWN(HIGHMEM_START);
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highend_pfn = max_pfn;
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#else
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max_low_pfn = PFN_DOWN(HIGHMEM_START);
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max_pfn = max_low_pfn;
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#endif
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}
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/*
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* In any case the added to the memblock memory regions
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* (highmem/lowmem, available/reserved, etc) are considered
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* as present, so inform sparsemem about them.
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*/
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memblocks_present();
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/*
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* Reserve initrd memory if needed.
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*/
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@ -528,8 +393,9 @@ static int __init early_parse_mem(char *p)
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* size.
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*/
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if (usermem == 0) {
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boot_mem_map.nr_map = 0;
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usermem = 1;
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memblock_remove(memblock_start_of_DRAM(),
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memblock_end_of_DRAM() - memblock_start_of_DRAM());
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}
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start = 0;
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size = memparse(p, &p);
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@ -586,14 +452,13 @@ early_param("memmap", early_parse_memmap);
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unsigned long setup_elfcorehdr, setup_elfcorehdr_size;
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static int __init early_parse_elfcorehdr(char *p)
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{
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int i;
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struct memblock_region *mem;
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setup_elfcorehdr = memparse(p, &p);
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for (i = 0; i < boot_mem_map.nr_map; i++) {
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unsigned long start = boot_mem_map.map[i].addr;
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unsigned long end = (boot_mem_map.map[i].addr +
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boot_mem_map.map[i].size);
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for_each_memblock(memory, mem) {
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unsigned long start = mem->base;
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unsigned long end = mem->end;
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if (setup_elfcorehdr >= start && setup_elfcorehdr < end) {
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/*
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* Reserve from the elf core header to the end of
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@ -613,47 +478,20 @@ static int __init early_parse_elfcorehdr(char *p)
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early_param("elfcorehdr", early_parse_elfcorehdr);
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#endif
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static void __init arch_mem_addpart(phys_addr_t mem, phys_addr_t end, int type)
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{
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phys_addr_t size;
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int i;
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size = end - mem;
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if (!size)
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return;
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/* Make sure it is in the boot_mem_map */
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for (i = 0; i < boot_mem_map.nr_map; i++) {
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if (mem >= boot_mem_map.map[i].addr &&
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mem < (boot_mem_map.map[i].addr +
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boot_mem_map.map[i].size))
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return;
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}
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add_memory_region(mem, size, type);
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}
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#ifdef CONFIG_KEXEC
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static inline unsigned long long get_total_mem(void)
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{
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unsigned long long total;
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total = max_pfn - min_low_pfn;
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return total << PAGE_SHIFT;
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}
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static void __init mips_parse_crashkernel(void)
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{
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unsigned long long total_mem;
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unsigned long long crash_size, crash_base;
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int ret;
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total_mem = get_total_mem();
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total_mem = memblock_phys_mem_size();
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ret = parse_crashkernel(boot_command_line, total_mem,
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&crash_size, &crash_base);
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if (ret != 0 || crash_size <= 0)
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return;
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if (!memory_region_available(crash_base, crash_size)) {
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if (!memblock_find_in_range(crash_base, crash_base + crash_size, crash_size, 0)) {
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pr_warn("Invalid memory region reserved for crash kernel\n");
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return;
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}
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@ -686,6 +524,17 @@ static void __init request_crashkernel(struct resource *res)
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}
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#endif /* !defined(CONFIG_KEXEC) */
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static void __init check_kernel_sections_mem(void)
|
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{
|
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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);
|
||||
|
||||
|
|
|
|||
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