diff options
| author | Yi Li <yi.li@analog.com> | 2008-01-27 14:56:17 +0300 |
|---|---|---|
| committer | Bryan Wu <bryan.wu@analog.com> | 2008-01-27 14:56:17 +0300 |
| commit | ee7883b7466e721a72edacbcba2fe9cf449d82b2 (patch) | |
| tree | cefc955b47f9f2e99f739ee27144e025cf6300e9 /arch/blackfin | |
| parent | de8c43f2fca9bb06f3ee87b38a61d5d9966ce221 (diff) | |
| download | linux-ee7883b7466e721a72edacbcba2fe9cf449d82b2.tar.xz | |
[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>
Diffstat (limited to 'arch/blackfin')
| -rw-r--r-- | arch/blackfin/kernel/setup.c | 1 | ||||
| -rw-r--r-- | arch/blackfin/mm/init.c | 29 |
2 files changed, 24 insertions, 6 deletions
diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c index 1a942a721d51..462cae893757 100644 --- a/arch/blackfin/kernel/setup.c +++ b/arch/blackfin/kernel/setup.c @@ -238,6 +238,7 @@ void __init setup_arch(char **cmdline_p) memory_end = _ramend - DMA_UNCACHED_REGION; _ramstart = (unsigned long)__bss_stop; + _rambase = (unsigned long)_stext; #ifdef CONFIG_MPU /* Round up to multiple of 4MB. */ memory_start = (_ramstart + 0x3fffff) & ~0x3fffff; diff --git a/arch/blackfin/mm/init.c b/arch/blackfin/mm/init.c index 9f007cace6e6..eb1a12ac9e33 100644 --- a/arch/blackfin/mm/init.c +++ b/arch/blackfin/mm/init.c @@ -128,8 +128,8 @@ void __init paging_init(void) void __init mem_init(void) { unsigned int codek = 0, datak = 0, initk = 0; + unsigned int reservedpages = 0, freepages = 0; unsigned long tmp; - unsigned int len = _ramend - _rambase; unsigned long start_mem = memory_start; unsigned long end_mem = memory_end; @@ -138,19 +138,36 @@ void __init mem_init(void) start_mem = PAGE_ALIGN(start_mem); max_mapnr = num_physpages = MAP_NR(high_memory); - printk(KERN_INFO "Physical pages: %lx\n", num_physpages); + printk(KERN_INFO "Kernel managed physical pages: %lu\n", + num_physpages); /* This will put all memory onto the freelists. */ totalram_pages = free_all_bootmem(); + reservedpages = 0; + for (tmp = 0; tmp < max_mapnr; tmp++) + if (PageReserved(pfn_to_page(tmp))) + reservedpages++; + freepages = max_mapnr - reservedpages; + + /* do not count in kernel image between _rambase and _ramstart */ + reservedpages -= (_ramstart - _rambase) >> PAGE_SHIFT; +#if (defined(CONFIG_BFIN_ICACHE) && ANOMALY_05000263) + reservedpages += (_ramend - memory_end - DMA_UNCACHED_REGION) >> + PAGE_SHIFT; +#endif + codek = (_etext - _stext) >> 10; - datak = (__bss_stop - __bss_start) >> 10; initk = (__init_end - __init_begin) >> 10; + datak = ((_ramstart - _rambase) >> 10) - codek - initk; - tmp = nr_free_pages() << PAGE_SHIFT; printk(KERN_INFO - "Memory available: %luk/%uk RAM, (%uk init code, %uk kernel code, %uk data, %uk dma)\n", - tmp >> 10, len >> 10, initk, codek, datak, DMA_UNCACHED_REGION >> 10); + "Memory available: %luk/%luk RAM, " + "(%uk init code, %uk kernel code, " + "%uk data, %uk dma, %uk reserved)\n", + (unsigned long) freepages << (PAGE_SHIFT-10), _ramend >> 10, + initk, codek, datak, DMA_UNCACHED_REGION >> 10, + (reservedpages << (PAGE_SHIFT-10))); /* Initialize the blackfin L1 Memory. */ l1sram_init(); |