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[Blackfin] arch: fix bug kernel boot message: memory information is not reasonable
Some of the information in kernel boot message is not reasonable. http://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=3846 - use _rambase as the start of kernel image. kernel is in the region [_rambase, _ramstart] - count in pages in per-cpu-page list as available memory - reserved memory now include: [0 - 4K] for bad pointer catching, memory reserved for abnormaly 05000263, memory reserved by kernel itself. Signed-off-by: Yi Li <yi.li@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
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de8c43f2fc
commit
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2 changed files with 26 additions and 8 deletions
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@ -238,6 +238,7 @@ void __init setup_arch(char **cmdline_p)
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memory_end = _ramend - DMA_UNCACHED_REGION;
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_ramstart = (unsigned long)__bss_stop;
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_rambase = (unsigned long)_stext;
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#ifdef CONFIG_MPU
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/* Round up to multiple of 4MB. */
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memory_start = (_ramstart + 0x3fffff) & ~0x3fffff;
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@ -128,8 +128,8 @@ void __init paging_init(void)
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void __init mem_init(void)
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{
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unsigned int codek = 0, datak = 0, initk = 0;
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unsigned int reservedpages = 0, freepages = 0;
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unsigned long tmp;
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unsigned int len = _ramend - _rambase;
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unsigned long start_mem = memory_start;
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unsigned long end_mem = memory_end;
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@ -138,19 +138,36 @@ void __init mem_init(void)
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start_mem = PAGE_ALIGN(start_mem);
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max_mapnr = num_physpages = MAP_NR(high_memory);
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printk(KERN_INFO "Physical pages: %lx\n", num_physpages);
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printk(KERN_INFO "Kernel managed physical pages: %lu\n",
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num_physpages);
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/* This will put all memory onto the freelists. */
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totalram_pages = free_all_bootmem();
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codek = (_etext - _stext) >> 10;
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datak = (__bss_stop - __bss_start) >> 10;
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initk = (__init_end - __init_begin) >> 10;
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reservedpages = 0;
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for (tmp = 0; tmp < max_mapnr; tmp++)
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if (PageReserved(pfn_to_page(tmp)))
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reservedpages++;
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freepages = max_mapnr - reservedpages;
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/* do not count in kernel image between _rambase and _ramstart */
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reservedpages -= (_ramstart - _rambase) >> PAGE_SHIFT;
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#if (defined(CONFIG_BFIN_ICACHE) && ANOMALY_05000263)
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reservedpages += (_ramend - memory_end - DMA_UNCACHED_REGION) >>
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PAGE_SHIFT;
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#endif
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codek = (_etext - _stext) >> 10;
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initk = (__init_end - __init_begin) >> 10;
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datak = ((_ramstart - _rambase) >> 10) - codek - initk;
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tmp = nr_free_pages() << PAGE_SHIFT;
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printk(KERN_INFO
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"Memory available: %luk/%uk RAM, (%uk init code, %uk kernel code, %uk data, %uk dma)\n",
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tmp >> 10, len >> 10, initk, codek, datak, DMA_UNCACHED_REGION >> 10);
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"Memory available: %luk/%luk RAM, "
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"(%uk init code, %uk kernel code, "
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"%uk data, %uk dma, %uk reserved)\n",
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(unsigned long) freepages << (PAGE_SHIFT-10), _ramend >> 10,
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initk, codek, datak, DMA_UNCACHED_REGION >> 10,
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(reservedpages << (PAGE_SHIFT-10)));
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/* Initialize the blackfin L1 Memory. */
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l1sram_init();
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