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path: root/drivers/firmware/pcdp.c
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2012-07-30pcdp: use early_ioremap/early_iounmap to access pcdp tableGreg Pearson1-2/+2
efi_setup_pcdp_console() is called during boot to parse the HCDP/PCDP EFI system table and setup an early console for printk output. The routine uses ioremap/iounmap to setup access to the HCDP/PCDP table information. The call to ioremap is happening early in the boot process which leads to a panic on x86_64 systems: panic+0x01ca do_exit+0x043c oops_end+0x00a7 no_context+0x0119 __bad_area_nosemaphore+0x0138 bad_area_nosemaphore+0x000e do_page_fault+0x0321 page_fault+0x0020 reserve_memtype+0x02a1 __ioremap_caller+0x0123 ioremap_nocache+0x0012 efi_setup_pcdp_console+0x002b setup_arch+0x03a9 start_kernel+0x00d4 x86_64_start_reservations+0x012c x86_64_start_kernel+0x00fe This replaces the calls to ioremap/iounmap in efi_setup_pcdp_console() with calls to early_ioremap/early_iounmap which can be called during early boot. This patch was tested on an x86_64 prototype system which uses the HCDP/PCDP table for early console setup. Signed-off-by: Greg Pearson <greg.pearson@hp.com> Acked-by: Khalid Aziz <khalid.aziz@hp.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-17[IA64] Convert ia64 to use int-ll64.hMatthew Wilcox1-2/+2
It is generally agreed that it would be beneficial for u64 to be an unsigned long long on all architectures. ia64 (in common with several other 64-bit architectures) currently uses unsigned long. Migrating piecemeal is too painful; this giant patch fixes all compilation warnings and errors that come as a result of switching to use int-ll64.h. Note that userspace will still see __u64 defined as unsigned long. This is important as it affects C++ name mangling. [Updated by Tony Luck to change efi.h:efi_freemem_callback_t to use u64 for start/end rather than unsigned long] Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-16serial: convert early_uart to earlycon for 8250Yinghai Lu1-2/+4
Beacuse SERIAL_PORT_DFNS is removed from include/asm-i386/serial.h and include/asm-x86_64/serial.h. the serial8250_ports need to be probed late in serial initializing stage. the console_init=>serial8250_console_init=> register_console=>serial8250_console_setup will return -ENDEV, and console ttyS0 can not be enabled at that time. need to wait till uart_add_one_port in drivers/serial/serial_core.c to call register_console to get console ttyS0. that is too late. Make early_uart to use early_param, so uart console can be used earlier. Make it to be bootconsole with CON_BOOT flag, so can use console handover feature. and it will switch to corresponding normal serial console automatically. new command line will be: console=uart8250,io,0x3f8,9600n8 console=uart8250,mmio,0xff5e0000,115200n8 or earlycon=uart8250,io,0x3f8,9600n8 earlycon=uart8250,mmio,0xff5e0000,115200n8 it will print in very early stage: Early serial console at I/O port 0x3f8 (options '9600n8') console [uart0] enabled later for console it will print: console handover: boot [uart0] -> real [ttyS0] Signed-off-by: <yinghai.lu@sun.com> Cc: Andi Kleen <ak@suse.de> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Gerd Hoffmann <kraxel@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-02ACPICA: Remove duplicate table definitions (non-conflicting), contAlexey Starikovskiy1-1/+1
Signed-off-by: Len Brown <len.brown@intel.com>
2006-06-30Remove obsolete #include <linux/config.h>Jörn Engel1-1/+0
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-03-26[PATCH] EFI: keep physical table addresses in efi structureBjorn Helgaas1-7/+12
Almost all users of the table addresses from the EFI system table want physical addresses. So rather than doing the pa->va->pa conversion, just keep physical addresses in struct efi. This fixes a DMI bug: the efi structure contained the physical SMBIOS address on x86 but the virtual address on ia64, so dmi_scan_machine() used ioremap() on a virtual address on ia64. This is essentially the same as an earlier patch by Matt Tolentino: http://marc.theaimsgroup.com/?l=linux-kernel&m=112130292316281&w=2 except that this changes all table addresses, not just ACPI addresses. Matt's original patch was backed out because it caused MCAs on HP sx1000 systems. That problem is resolved by the ioremap() attribute checking added for ia64. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Matt Domsch <Matt_Domsch@dell.com> Cc: "Tolentino, Matthew E" <matthew.e.tolentino@intel.com> Cc: "Brown, Len" <len.brown@intel.com> Cc: Andi Kleen <ak@muc.de> Acked-by: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-28[PATCH] PCDP: if PCDP contains parity information, use itBjorn Helgaas1-3/+11
If the PCDP supplies parity, use it (only none/even/odd supported), and don't append parity/stop bit arguments unless baud is present. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-28[IA64-SGI] pcdp: add PCDP pci interface supportMark Maule1-3/+21
Resend 2 with changes per Bjorn Helgaas comments. Changes from original: + Change globals to vga_console_iobase/vga_console_membase and make them unconditional. + Address style-related comments. Patch to extend the PCDP vga setup code to support PCI io/mem translations for the legacy vga ioport and ram spaces on architectures (e.g. altix) which need them. Summary of the changes: drivers/firmware/pcdp.c drivers/firmware/pcdp.h ----------------------- + add declaration for the spec-defined PCI interface struct (pcdp_if_pci) as well as support macros. + extend setup_vga_console() to know about pcdp_if_pci and add a couple of globals to hold the io and mem translation offsets if present. arch/ia64/kernel/setup.c ------------------------ + tweek early_console_setup() to allow multiple early console setup routines to be called. include/asm-ia64/vga.h ---------------------- + make VGA_MAP_MEM vga_console_membase aware Signed-off-by: Mark Maule <maule@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-06-23[PATCH] PCDP: handle tables that don't supply baud rateBjorn Helgaas1-4/+7
The HCDP specs (i.e., PCDP revision < 3) allow zero as a default value for baud rate and data bits. So if firmware doesn't supply them, let early_serial_console_init() probe for them rather than telling it the baud rate is zero. Also, update the URL for the PCDP spec. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-31[PATCH] pcdp.c build fixPeter Chubb1-0/+1
In file included from drivers/firmware/pcdp.c:18: drivers/firmware/pcdp.h:48: error: field `addr' has incomplete type drivers/firmware/pcdp.c: In function `setup_serial_console': drivers/firmware/pcdp.c:27: error: `ACPI_ADR_SPACE_SYSTEM_MEMORY' undeclared (first use in this function) Cc: <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-16Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds1-0/+100
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!

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