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* x86: trivial printk fix in efi.cRuss Anderson2008-10-031-2/+4
| | | | | | | | | | | | | | [patch] x86: Trivial printk fix in efi.c The following line is lacking a space between "memdesc" and "doesn't". "Kernel-defined memdescdoesn't match the one from EFI!" Fixed the printk by adding a space. Signed-off-by: Russ Anderson <rja@sgi.com> Cc: Russ Anderson <rja@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: introduce max_low_pfn_mapped for 64-bitYinghai Lu2008-07-111-1/+1
| | | | | | | | when more than 4g memory is installed, don't map the big hole below 4g. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Cc: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86 boot: only pick up additional EFI memmap if add_efi_memmap flagPaul Jackson2008-07-081-2/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Applies on top of the previous patch: x86 boot: add code to add BIOS provided EFI memory entries to kernel Instead of always adding EFI memory map entries (if present) to the memory map after initially finding either E820 BIOS memory map entries and/or kernel command line memmap entries, -instead- only add such additional EFI memory map entries if the kernel boot option: add_efi_memmap is specified. Requiring this 'add_efi_memmap' option is backward compatible with kernels that didn't load such additional EFI memory map entries in the first place, and it doesn't override a configuration that tries to replace all E820 or EFI BIOS memory map entries with ones given entirely on the kernel command line. Signed-off-by: Paul Jackson <pj@sgi.com> Cc: "Yinghai Lu" <yhlu.kernel@gmail.com> Cc: "Jack Steiner" <steiner@sgi.com> Cc: "Mike Travis" <travis@sgi.com> Cc: "Huang Cc: Ying" <ying.huang@intel.com> Cc: "Andi Kleen" <andi@firstfloor.org> Cc: "Andrew Morton" <akpm@linux-foundation.org> Cc: Paul Jackson <pj@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86 boot: x86_64 efi compiler warning fixPaul Jackson2008-07-081-5/+9
| | | | | | | | | | | | | | | | | | Fix a compiler warning. Rather than always casting a u32 to a pointer (which generates a warning on x86_64 systems) instead separate the x86_32 and x86_64 assignments entirely with ifdefs. Until other recent changes to this code, it used to have x86_64 separated like this. Signed-off-by: Paul Jackson <pj@sgi.com> Cc: "Yinghai Lu" <yhlu.kernel@gmail.com> Cc: "Jack Steiner" <steiner@sgi.com> Cc: "Mike Travis" <travis@sgi.com> Cc: "Huang Cc: Ying" <ying.huang@intel.com> Cc: "Andi Kleen" <andi@firstfloor.org> Cc: "Andrew Morton" <akpm@linux-foundation.org> Cc: Paul Jackson <pj@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: rename two e820 related functionsYinghai Lu2008-07-081-1/+1
| | | | | | | | | | rename update_memory_range to e820_update_range rename add_memory_region to e820_add_region to make it more clear that they are about e820 map operations. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: reserve EFI memory map with reserve_earlyHuang, Ying2008-06-051-13/+20
| | | | | | | | | | | | | This patch reserves the EFI memory map with reserve_early(). Because EFI memory map is allocated by bootloader, if it is not reserved by reserved_early(), it may be overwritten through address returned by find_e820_area(). Signed-off-by: Huang Ying <ying.huang@intel.com> Cc: andi@firstfloor.org Cc: mingo@redhat.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86 boot: add code to add BIOS provided EFI memory entries to kernelPaul Jackson2008-05-251-0/+26
| | | | | | | | | | | | | | | | | | | | | Add to the kernels boot memory map 'memmap' entries found in the EFI memory descriptors passed in from the BIOS. On EFI systems, up to E820MAX == 128 memory map entries can be passed via the legacy E820 interface (limited by the size of the 'zeropage'). These entries can be duplicated in the EFI descriptors also passed from the BIOS, and possibly more entries passed by the EFI interface, which does not have the E820MAX limit on number of memory map entries. This code doesn't worry about the likely duplicate, overlapping or (unlikely) conflicting entries between the EFI map and the E820 map. It just dumps all the EFI entries into the memmap[] array (which already has the E820 entries) and lets the existing routine sanitize_e820_map() sort the mess out. Signed-off-by: Paul Jackson <pj@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: EFI_PAGE_SHIFT fixHuang, Ying2008-04-191-5/+13
| | | | | | | | | | | | | Make x86 EFI code works when EFI_PAGE_SHIFT != PAGE_SHIFT. The memrage_efi_to_native() provided in this patch can be used on other EFI platform such as IA64 too. This patch has been tested on Intel x86_64 platform with EFI 64/32 firmware. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: sparse warning in efi.cHarvey Harrison2008-02-191-1/+1
| | | | | | | | Yes, it should. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: EFI set_memory_x()/set_memory_uc() fixesIngo Molnar2008-02-141-2/+2
| | | | | | | | | The EFI-runtime mapping code changed a larger memory area than it should have, due to a pages/bytes parameter mixup. noticed by Andi Kleen. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: EFI runtime code mapping enhancementHuang, Ying2008-02-131-4/+2
| | | | | | | | | | | | | | | | | This patch enhances EFI runtime code memory mapping as following: - Move __supported_pte_mask & _PAGE_NX checking before invoking runtime_code_page_mkexec(). This makes it possible for compiler to eliminate runtime_code_page_mkexec() on machine without NX support. - Use set_memory_x/nx in early_mapping_set_exec(). This eliminates the duplicated implementation. This patch has been tested on Intel x86_64 platform with EFI64/32 firmware. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: EFI: fix use of unitialized variable and the cache logicThomas Gleixner2008-02-131-3/+3
| | | | | | | | | | | | | | | Andi Kleen pointed out that the cache attribute logic is reverse in efi_enter_virtual_mode(). This problem alone is harmless as we do not (yet) do cache attribute conflict resolution. (This bug was not present in the original EFI submission - I introduced it while fixing up rejects.) While reviewing this code I noticed a second, worse problem: the use of uninitialized md->virt_addr. Fix both problems. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: fix EFI mappingHuang, Ying2008-02-041-27/+30
| | | | | | | | | The patch updates EFI runtime memory mapping code, by making EFI areas explicitly executable. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: fixes some bugs about EFI memory map handlingHuang, Ying2008-01-301-0/+2
| | | | | | | | | | | | | | | | | | This patch fixes some bugs of EFI memory handing code. - On x86_64, it is possible that EFI memory map can not be mapped via identity map, so efi_map_memmap is removed, just use early_ioremap. - On i386, the EFI memory map mapping take effect cross paging_init, so it is not necessary to use efi_map_memmap. - EFI memory map is unmapped in efi_enter_virtual_mode to avoid early_ioremap leak. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: use reboot_type on EFI 32Huang, Ying2008-01-301-2/+0
| | | | | | | | | | This patch makes reboot_type of BOOT_EFI is used on i386 too. Because correpsonding reboot code of i386 and x86_64 is merged. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: convert CPA users to the new set_page_ APIArjan van de Ven2008-01-301-4/+4
| | | | | | | | | This patch converts various users of change_page_attr() to the new, more intent driven set_page_*/set_memory_* API set. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: introduce max_pfn_mappedThomas Gleixner2008-01-301-2/+2
| | | | | | | | | | | 64bit uses end_pfn_map and 32bit uses max_low_pfn. There are several files which have #ifdef'ed defines which map either to end_pfn_map or max_low_pfn. Replace this by a universal define and clean up all the other instances. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: fix some bugs about EFI runtime code mappingHuang, Ying2008-01-301-5/+30
| | | | | | | | | | | | | | | | | This patch fixes some bugs of making EFI runtime code executable. - Use change_page_attr in i386 too. Because the runtime code may be mapped not through ioremap. - If there is no _PAGE_NX in __supported_pte_mask, the change_page_attr is not called. - Make efi_ioremap map pages as PAGE_KERNEL_EXEC_NOCACHE, because EFI runtime code may be mapped through efi_ioremap. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86 32-bit boot: rename bt_ioremap() to early_ioremap()Huang, Ying2008-01-301-12/+12
| | | | | | | | | | | This patch renames bt_ioremap to early_ioremap, which is used in x86_64. This makes it easier to merge i386 and x86_64 usage. [ mingo@elte.hu: fix ] Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: 32-bit EFI runtime service support: fixes in sync with 64-bit supportHuang, Ying2008-01-301-0/+7
| | | | | | | | | | | | | | | | | | | | | | support according to fixes of x86_64 support. - Delete efi_rt_lock because it is used during system early boot, before SMP is initialized. - Change local_flush_tlb() to __flush_tlb_all() to flush global page mapping. - Clean up includes. - Revise Kconfig description. - Enable noefi kernel parameter on i386. Signed-off-by: Huang Ying <ying.huang@intel.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: EFI runtime service supportHuang, Ying2008-01-301-0/+480
This patch adds basic runtime services support for EFI x86_64 system. The main file of the patch is the addition of efi_64.c for x86_64. This file is modeled after the EFI IA32 avatar. EFI runtime services initialization are implemented in efi_64.c. Some x86_64 specifics are worth noting here. On x86_64, parameters passed to EFI firmware services need to follow the EFI calling convention. For this purpose, a set of functions named efi_call<x> (<x> is the number of parameters) are implemented. EFI function calls are wrapped before calling the firmware service. The duplicated code between efi_32.c and efi_64.c is placed in efi.c to remove them from efi_32.c. Signed-off-by: Chandramouli Narayanan <mouli@linux.intel.com> Signed-off-by: Huang Ying <ying.huang@intel.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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