diff options
Diffstat (limited to 'arch/hexagon/mm/init.c')
| -rw-r--r-- | arch/hexagon/mm/init.c | 35 |
1 files changed, 22 insertions, 13 deletions
diff --git a/arch/hexagon/mm/init.c b/arch/hexagon/mm/init.c index 69ffcfd2879..2561d259a29 100644 --- a/arch/hexagon/mm/init.c +++ b/arch/hexagon/mm/init.c @@ -1,7 +1,7 @@ /* * Memory subsystem initialization for Hexagon * - * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved. + * Copyright (c) 2010-2013, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and @@ -31,9 +31,10 @@ * Define a startpg just past the end of the kernel image and a lastpg * that corresponds to the end of real or simulated platform memory. */ -#define bootmem_startpg (PFN_UP(((unsigned long) _end) - PAGE_OFFSET)) +#define bootmem_startpg (PFN_UP(((unsigned long) _end) - PAGE_OFFSET + PHYS_OFFSET)) -unsigned long bootmem_lastpg; /* Should be set by platform code */ +unsigned long bootmem_lastpg; /* Should be set by platform code */ +unsigned long __phys_offset; /* physical kernel offset >> 12 */ /* Set as variable to limit PMD copies */ int max_kernel_seg = 0x303; @@ -44,7 +45,6 @@ unsigned long zero_page_mask; /* indicate pfn's of high memory */ unsigned long highstart_pfn, highend_pfn; -/* struct mmu_gather defined in asm-generic.h; */ DEFINE_PER_CPU(struct mmu_gather, mmu_gathers); /* Default cache attribute for newly created page tables */ @@ -71,7 +71,7 @@ void __init mem_init(void) { /* No idea where this is actually declared. Seems to evade LXR. */ totalram_pages += free_all_bootmem(); - num_physpages = bootmem_lastpg; /* seriously, what? */ + num_physpages = bootmem_lastpg-ARCH_PFN_OFFSET; printk(KERN_INFO "totalram_pages = %ld\n", totalram_pages); @@ -193,6 +193,9 @@ void __init setup_arch_memory(void) * This needs to change for highmem setups. */ + /* Prior to this, bootmem_lastpg is actually mem size */ + bootmem_lastpg += ARCH_PFN_OFFSET; + /* Memory size needs to be a multiple of 16M */ bootmem_lastpg = PFN_DOWN((bootmem_lastpg << PAGE_SHIFT) & ~((BIG_KERNEL_PAGE_SIZE) - 1)); @@ -201,12 +204,15 @@ void __init setup_arch_memory(void) * Reserve the top DMA_RESERVE bytes of RAM for DMA (uncached) * memory allocation */ - bootmap_size = init_bootmem(bootmem_startpg, bootmem_lastpg - - PFN_DOWN(DMA_RESERVED_BYTES)); + + max_low_pfn = bootmem_lastpg - PFN_DOWN(DMA_RESERVED_BYTES); + min_low_pfn = ARCH_PFN_OFFSET; + bootmap_size = init_bootmem_node(NODE_DATA(0), bootmem_startpg, min_low_pfn, max_low_pfn); printk(KERN_INFO "bootmem_startpg: 0x%08lx\n", bootmem_startpg); printk(KERN_INFO "bootmem_lastpg: 0x%08lx\n", bootmem_lastpg); printk(KERN_INFO "bootmap_size: %d\n", bootmap_size); + printk(KERN_INFO "min_low_pfn: 0x%08lx\n", min_low_pfn); printk(KERN_INFO "max_low_pfn: 0x%08lx\n", max_low_pfn); /* @@ -221,14 +227,17 @@ void __init setup_arch_memory(void) /* this actually only goes to the end of the first gig */ segtable_end = segtable + (1<<(30-22)); - /* Move forward to the start of empty pages */ - segtable += bootmem_lastpg >> (22-PAGE_SHIFT); + /* + * Move forward to the start of empty pages; take into account + * phys_offset shift. + */ + segtable += (bootmem_lastpg-ARCH_PFN_OFFSET)>>(22-PAGE_SHIFT); { - int i; + int i; - for (i = 1 ; i <= DMA_RESERVE ; i++) - segtable[-i] = ((segtable[-i] & __HVM_PTE_PGMASK_4MB) + for (i = 1 ; i <= DMA_RESERVE ; i++) + segtable[-i] = ((segtable[-i] & __HVM_PTE_PGMASK_4MB) | __HVM_PTE_R | __HVM_PTE_W | __HVM_PTE_X | __HEXAGON_C_UNC << 6 | __HVM_PDE_S_4MB); @@ -256,7 +265,7 @@ void __init setup_arch_memory(void) * Free all the memory that wasn't taken up by the bootmap, the DMA * reserve, or kernel itself. */ - free_bootmem(PFN_PHYS(bootmem_startpg)+bootmap_size, + free_bootmem(PFN_PHYS(bootmem_startpg) + bootmap_size, PFN_PHYS(bootmem_lastpg - bootmem_startpg) - bootmap_size - DMA_RESERVED_BYTES); |