diff options
author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-10-30 18:39:02 +0000 |
---|---|---|
committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-10-30 18:39:02 +0000 |
commit | 31271e9aacaa3c3460cbad8ec62fb5a04a522f5b (patch) | |
tree | 815c671dac14e0e07959dc88e94c36a994f9c460 /arch/x86/kernel/setup.c | |
parent | 32111abb508424d1d110fa471d940160abe251f5 (diff) | |
parent | dc4dc36056392c0b0b1ca9e81bebff964b9297e0 (diff) |
Merge branch 'spi-tegra' into spi-next
Diffstat (limited to 'arch/x86/kernel/setup.c')
-rw-r--r-- | arch/x86/kernel/setup.c | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index a2bb18e0283..ca45696f30f 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -920,8 +920,22 @@ void __init setup_arch(char **cmdline_p) #ifdef CONFIG_X86_64 if (max_pfn > max_low_pfn) { - max_pfn_mapped = init_memory_mapping(1UL<<32, - max_pfn<<PAGE_SHIFT); + int i; + unsigned long start, end; + unsigned long start_pfn, end_pfn; + + for_each_mem_pfn_range(i, MAX_NUMNODES, &start_pfn, &end_pfn, + NULL) { + + end = PFN_PHYS(end_pfn); + if (end <= (1UL<<32)) + continue; + + start = PFN_PHYS(start_pfn); + max_pfn_mapped = init_memory_mapping( + max((1UL<<32), start), end); + } + /* can we preseve max_low_pfn ?*/ max_low_pfn = max_pfn; } @@ -1035,6 +1049,18 @@ void __init setup_arch(char **cmdline_p) arch_init_ideal_nops(); register_refined_jiffies(CLOCK_TICK_RATE); + +#ifdef CONFIG_EFI + /* Once setup is done above, disable efi_enabled on mismatched + * firmware/kernel archtectures since there is no support for + * runtime services. + */ + if (efi_enabled && IS_ENABLED(CONFIG_X86_64) != efi_64bit) { + pr_info("efi: Setup done, disabling due to 32/64-bit mismatch\n"); + efi_unmap_memmap(); + efi_enabled = 0; + } +#endif } #ifdef CONFIG_X86_32 |