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hc

2024-02-19 1c055e55a242a33e574e48be530e06770a210dcd

 kernel/arch/microblaze/mm/init.c
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@@ -7,10 +7,10 @@
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  * for more details.
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  */
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-#include <linux/bootmem.h>
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+#include <linux/dma-map-ops.h>
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+#include <linux/memblock.h>
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 #include <linux/init.h>
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 #include <linux/kernel.h>
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-#include <linux/memblock.h>
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 #include <linux/mm.h> /* mem_init */
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 #include <linux/initrd.h>
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 #include <linux/pagemap.h>
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@@ -46,17 +46,12 @@
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 EXPORT_SYMBOL(memory_size);
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 unsigned long lowmem_size;
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+EXPORT_SYMBOL(min_low_pfn);
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+EXPORT_SYMBOL(max_low_pfn);
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+
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 #ifdef CONFIG_HIGHMEM
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 pte_t *kmap_pte;
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 EXPORT_SYMBOL(kmap_pte);
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-pgprot_t kmap_prot;
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-EXPORT_SYMBOL(kmap_prot);
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-
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-static inline pte_t *virt_to_kpte(unsigned long vaddr)
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-{
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-	return pte_offset_kernel(pmd_offset(pgd_offset_k(vaddr),
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-			vaddr), vaddr);
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-}
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 static void __init highmem_init(void)
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 {
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@@ -65,7 +60,6 @@
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 	pkmap_page_table = virt_to_kpte(PKMAP_BASE);
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 	kmap_pte = virt_to_kpte(__fix_to_virt(FIX_KMAP_BEGIN));
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-	kmap_prot = PAGE_KERNEL;
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 }
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 static void highmem_setup(void)
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@@ -109,20 +103,20 @@
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 #endif
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 	/* We don't have holes in memory map */
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-	free_area_init_nodes(zones_size);
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+	free_area_init(zones_size);
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 }
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 void __init setup_memory(void)
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 {
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-	struct memblock_region *reg;
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-
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 #ifndef CONFIG_MMU
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 	u32 kernel_align_start, kernel_align_size;
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+	phys_addr_t start, end;
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+	u64 i;
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 	/* Find main memory where is the kernel */
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-	for_each_memblock(memory, reg) {
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-		memory_start = (u32)reg->base;
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-		lowmem_size = reg->size;
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+	for_each_mem_range(i, &start, &end) {
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+		memory_start = start;
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+		lowmem_size = end - start;
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 		if ((memory_start <= (u32)_text) &&
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 			((u32)_text <= (memory_start + lowmem_size - 1))) {
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 			memory_size = lowmem_size;
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@@ -170,33 +164,7 @@
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 	pr_info("%s: max_low_pfn: %#lx\n", __func__, max_low_pfn);
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 	pr_info("%s: max_pfn: %#lx\n", __func__, max_pfn);
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-	/* Add active regions with valid PFNs */
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-	for_each_memblock(memory, reg) {
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-		unsigned long start_pfn, end_pfn;
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-
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-		start_pfn = memblock_region_memory_base_pfn(reg);
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-		end_pfn = memblock_region_memory_end_pfn(reg);
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-		memblock_set_node(start_pfn << PAGE_SHIFT,
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-				  (end_pfn - start_pfn) << PAGE_SHIFT,
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-				  &memblock.memory, 0);
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-	}
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-
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-	/* XXX need to clip this if using highmem? */
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-	sparse_memory_present_with_active_regions(0);
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-
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 	paging_init();
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-}
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-
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-#ifdef CONFIG_BLK_DEV_INITRD
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-void free_initrd_mem(unsigned long start, unsigned long end)
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-{
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-	free_reserved_area((void *)start, (void *)end, -1, "initrd");
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-}
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-#endif
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-
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-void free_initmem(void)
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-{
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-	free_initmem_default(-1);
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 }
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 void __init mem_init(void)
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@@ -204,24 +172,12 @@
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 	high_memory = (void *)__va(memory_start + lowmem_size - 1);
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 	/* this will put all memory onto the freelists */
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-	free_all_bootmem();
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+	memblock_free_all();
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 #ifdef CONFIG_HIGHMEM
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 	highmem_setup();
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 #endif
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 	mem_init_print_info(NULL);
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-#ifdef CONFIG_MMU
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-	pr_info("Kernel virtual memory layout:\n");
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-	pr_info("  * 0x%08lx..0x%08lx  : fixmap\n", FIXADDR_START, FIXADDR_TOP);
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-#ifdef CONFIG_HIGHMEM
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-	pr_info("  * 0x%08lx..0x%08lx  : highmem PTEs\n",
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-		PKMAP_BASE, PKMAP_ADDR(LAST_PKMAP));
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-#endif /* CONFIG_HIGHMEM */
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-	pr_info("  * 0x%08lx..0x%08lx  : early ioremap\n",
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-		ioremap_bot, ioremap_base);
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-	pr_info("  * 0x%08lx..0x%08lx  : vmalloc & ioremap\n",
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-		(unsigned long)VMALLOC_START, VMALLOC_END);
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-#endif
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 	mem_init_done = 1;
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 }
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@@ -355,6 +311,11 @@
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 	/* This will also cause that unflatten device tree will be allocated
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 	 * inside 768MB limit */
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 	memblock_set_current_limit(memory_start + lowmem_size - 1);
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+
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+	parse_early_param();
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+
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+	/* CMA initialization */
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+	dma_contiguous_reserve(memory_start + lowmem_size - 1);
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 }
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 /* This is only called until mem_init is done. */
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@@ -364,8 +325,9 @@
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 	 * Mem start + kernel_tlb -> here is limit
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 	 * because of mem mapping from head.S
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 	 */
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-	return __va(memblock_alloc_base(PAGE_SIZE, PAGE_SIZE,
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-				memory_start + kernel_tlb));
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+	return memblock_alloc_try_nid_raw(PAGE_SIZE, PAGE_SIZE,
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+				MEMBLOCK_LOW_LIMIT, memory_start + kernel_tlb,
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+				NUMA_NO_NODE);
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 }
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 #endif /* CONFIG_MMU */
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@@ -374,12 +336,14 @@
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 {
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 	void *p;
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-	if (mem_init_done)
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+	if (mem_init_done) {
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 		p = kzalloc(size, mask);
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-	else {
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-		p = alloc_bootmem(size);
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-		if (p)
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-			memset(p, 0, size);
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+	} else {
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+		p = memblock_alloc(size, SMP_CACHE_BYTES);
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+		if (!p)
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+			panic("%s: Failed to allocate %zu bytes\n",
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+			      __func__, size);
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 	}
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+
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 	return p;
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 }