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* pc-bios/s390-ccw: Add a proper prototype for main()Thomas Huth2022-07-061-0/+1
| | | | | | | | | | | | Older versions of Clang complain if there is no prototype for main(). Add one, and while we're at it, make sure that we use the same type for main.c and netmain.c - since the return value does not matter, declare the return type of main() as "void". Message-Id: <20220704111903.62400-2-thuth@redhat.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Eric Farman <farman@linux.ibm.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
* pc-bios/s390-ccw: Silence warning from Clang by marking panic() as noreturnThomas Huth2021-05-091-0/+1
| | | | | | | | | | | | | | | | | | | | | | | When compiling the s390-ccw bios with Clang, the compiler emits a warning: pc-bios/s390-ccw/main.c:210:5: warning: variable 'found' is used uninitialized whenever switch default is taken [-Wsometimes-uninitialized] default: ^~~~~~~ pc-bios/s390-ccw/main.c:214:16: note: uninitialized use occurs here IPL_assert(found, "Boot device not found\n"); ^~~~~ It's a false positive, it only happens because Clang is not smart enough to see that the panic() function in the "default:" case can never return. Anyway, let's explicitely mark panic() with "noreturn" to shut up the warning. Message-Id: <20210502174836.838816-2-thuth@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
* pc-bios: s390x: Use reset PSW if avaliableJanosch Frank2020-10-061-0/+1
| | | | | | | | | | | If a blob provides a reset PSW then we should use it instead of branching to the PSW address and using our own mask. Signed-off-by: Janosch Frank <frankja@linux.ibm.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Message-Id: <20201006094249.50640-4-frankja@linux.ibm.com> [thuth: Use Elvis operator to shorten long line] Signed-off-by: Thomas Huth <thuth@redhat.com>
* pc-bios/s390-ccw: Do not bail out early if not finding a SCSI diskThomas Huth2020-10-061-1/+1
| | | | | | | | | | | In case the user did not specify a boot device, we want to continue looking for other devices if there are no valid SCSI disks on a virtio- scsi controller. As a first step, do not panic in this case and let the control flow carry the error to the upper functions instead. Message-Id: <20200806105349.632-6-thuth@redhat.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
* pc-bios/s390-ccw: Introduce ENODEV define and remove guards of othersThomas Huth2020-10-061-4/+2Star
| | | | | | | | | | | | | | Remove the "#ifndef E..." guards from the defines here - the header guard S390_CCW_H at the top of the file should avoid double definition, and if the error code is defined in a different file already, we're in trouble anyway, then it's better to see the error at compile time instead of hunting weird behavior during runtime later. Also define ENODEV - we will use this in a later patch. Message-Id: <20200806105349.632-4-thuth@redhat.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Janosch Frank <frankja@linux.ibm.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
* pc-bios: s390x: Move panic() into header and add infinite loopJanosch Frank2020-07-021-2/+7
| | | | | | | | | | | | | | | panic() was defined for the ccw and net bios, i.e. twice, so it's cleaner to rather put it into the header. Also let's add an infinite loop into the assembly of disabled_wait() so the caller doesn't need to take care of it. Signed-off-by: Janosch Frank <frankja@linux.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Message-Id: <20200624075226.92728-9-frankja@linux.ibm.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
* pc-bios: s390x: Move sleep and yield to helper.hJanosch Frank2020-07-021-18/+0Star
| | | | | | | | | | | They are definitely helper functions. Signed-off-by: Janosch Frank <frankja@linux.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com> Message-Id: <20200624075226.92728-4-frankja@linux.ibm.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
* pc-bios: s390x: Consolidate timing functions into time.hJanosch Frank2020-07-021-4/+4
| | | | | | | | | | Let's consolidate timing related functions into one header. Signed-off-by: Janosch Frank <frankja@linux.ibm.com> Acked-by: Thomas Huth <thuth@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com> Message-Id: <20200624075226.92728-3-frankja@linux.ibm.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
* pc-bios: s390x: Save iplb location in lowcoreJanosch Frank2020-03-101-0/+1
| | | | | | | | | | | | | | | | | | | | | | The POP states that for a list directed IPL the IPLB is stored into memory by the machine loader and its address is stored at offset 0x14 of the lowcore. ZIPL currently uses the address in offset 0x14 to access the IPLB and acquire flags about secure boot. If the IPLB address points into memory which has an unsupported mix of flags set, ZIPL will panic instead of booting the OS. As the lowcore can have quite a high entropy for a guest that did drop out of protected mode (i.e. rebooted) we encountered the ZIPL panic quite often. Signed-off-by: Janosch Frank <frankja@linux.ibm.com> Tested-by: Marc Hartmayer <mhartmay@linux.ibm.com> Message-Id: <20200304114231.23493-19-frankja@linux.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
* s390-bios: Support for running format-0/1 channel programsJason J. Herne2019-04-121-0/+1
| | | | | | | | | | | | | | | | Introduce a library function for executing format-0 and format-1 channel programs and waiting for their completion before continuing execution. Add cu_type() to channel io library. This will be used to query control unit type which is used to determine if we are booting a virtio device or a real dasd device. Signed-off-by: Jason J. Herne <jjherne@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Farhan Ali <alifm@linux.ibm.com> Message-Id: <1554388475-18329-9-git-send-email-jjherne@linux.ibm.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
* s390-bios: Decouple channel i/o logic from virtioJason J. Herne2019-04-121-1/+0Star
| | | | | | | | | | | | Create a separate library for channel i/o related code. This decouples channel i/o operations from virtio and allows us to make use of them for the real dasd boot path. Signed-off-by: Jason J. Herne <jjherne@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Message-Id: <1554388475-18329-6-git-send-email-jjherne@linux.ibm.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
* s390-bios: Clean up cio.hJason J. Herne2019-04-121-8/+0Star
| | | | | | | | | | | | | Add proper typedefs to all structs and modify all bit fields to use consistent formatting. Signed-off-by: Jason J. Herne <jjherne@linux.ibm.com> Reviewed-by: Collin Walling <walling@linux.ibm.com> Reviewed-by: Farhan Ali <alifm@linux.ibm.com> Acked-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Message-Id: <1554388475-18329-5-git-send-email-jjherne@linux.ibm.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
* pc-bios/s390-ccw/net: Use diag308 to reset machine before jumping to the OSThomas Huth2018-05-021-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | The netboot firmware so far simply jumped directly into the OS kernel after the download has been completed. This, however, bears the risk that the virtio-net device still might be active in the background and incoming packets are still placed into the buffers - which could destroy memory of the now-running Linux kernel in case it did not take over the device fast enough. Also the SCLP console is not put into a well-defined state here. We should hand over the system in a clean state when jumping into the kernel, so let's use the same mechanism as it's done in the main s390-ccw firmware and reset the machine with diag308 into a clean state before jumping into the OS kernel code. To be able to share the code with the main s390-ccw firmware, the related functions are now extracted from bootmap.c into a new file called jump2ipl.c. Since we now also set the boot device schid at address 184 for the network boot device, this patch also slightly changes the way how we detect the entry points for non-ELF binary images: The code now looks for the "S390EP" magic first and then jumps to 0x10000 in case it has been found. This is necessary for booting from network devices, since the normal kernel code (where the PSW at ddress 0 points to) tries to do a block load from the boot device. This of course fails for a virtio-net device and causes the kernel to abort with a panic-PSW silently. Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
* pc-bios/s390-ccw: fix non-sequential boot entries (enum)Collin Walling2018-05-021-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | zIPL boot menu entries can be non-sequential. Let's account for this issue for the s390 enumerated boot menu. Since we can no longer print a range of available entries to the user, we have to present a list of each available entry. An example of this menu: s390-ccw Enumerated Boot Menu. [0] default [1] [2] [7] [8] [9] [11] [12] Please choose: Signed-off-by: Collin Walling <walling@linux.ibm.com> Reported-by: Vasily Gorbik <gor@linux.ibm.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Janosch Frank <frankja@linux.ibm.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
* pc-bios/s390-ccw: rename MAX_TABLE_ENTRIES to MAX_BOOT_ENTRIESCollin Walling2018-05-021-0/+2
| | | | | | | | | | | | | The MAX_TABLE_ENTRIES constant has a name that is too generic. As we want to declare a limit for boot menu entries, let's rename it to a more fitting MAX_BOOT_ENTRIES and set its value to 31 (30 boot entries and 1 default entry). Also we move it from bootmap.h to s390-ccw.h to make it available for menu.c in a later patch. Signed-off-by: Collin Walling <walling@linux.ibm.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Janosch Frank <frankja@linux.ibm.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
* s390-ccw: interactive boot menu for scsiCollin L. Walling2018-02-261-0/+2
| | | | | | | | | | | | | | Interactive boot menu for scsi. This follows a similar procedure as the interactive menu for eckd dasd. An example follows: s390x Enumerated Boot Menu. 3 entries detected. Select from index 0 to 2. Signed-off-by: Collin L. Walling <walling@linux.vnet.ibm.com> Reviewed-by: Thomas Huth <thuth@redhat.com> [thuth: Added additional "break;" statement to avoid analyzer warnings] Signed-off-by: Thomas Huth <thuth@redhat.com>
* s390-ccw: set cp_receive mask only when needed and consume pending service irqsCollin L. Walling2018-02-261-0/+1
| | | | | | | | | | | | | | | | | | | | | | It is possible while waiting for multiple types of external interrupts that we might have pending irqs remaining between irq consumption and irq-type disabling. Those interrupts could potentially propagate to the guest after IPL completes and cause unwanted behavior. As it is today, the SCLP will only recognize write events that are enabled by the control program's send and receive masks. To limit the window for, and prevent further irqs from, ASCII console events (specifically keystrokes), we should only enable the control program's receive mask when we need it. While we're at it, remove assignment of the (non control program) send and receive masks, as those are actually set by the SCLP. Signed-off-by: Collin L. Walling <walling@linux.vnet.ibm.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
* s390-ccw: read user input for boot index via the SCLP consoleCollin L. Walling2018-02-261-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | Implements an sclp_read function to capture input from the console and a wrapper function that handles parsing certain characters and adding input to a buffer. The input is checked for any erroneous values and is handled appropriately. A prompt will persist until input is entered or the timeout expires (if one was set). Example: Please choose (default will boot in 10 seconds): Correct input will boot the respective boot index. If the user's input is empty, 0, or if the timeout expires, then the default zipl entry will be chosen. If the input is within the range of available boot entries, then the selection will be booted. Any erroneous input will cancel the timeout and re-prompt the user. Signed-off-by: Collin L. Walling <walling@linux.vnet.ibm.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
* s390-ccw: read stage2 boot loader data to find menuCollin L. Walling2018-02-261-0/+2
| | | | | | | | | | | | Read the stage2 boot loader data block-by-block. We scan the current block for the string "zIPL" to detect the start of the boot menu banner. We then load the adjacent blocks (previous block and next block) to account for the possibility of menu data spanning multiple blocks. Signed-off-by: Collin L. Walling <walling@linux.vnet.ibm.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
* s390-ccw: set up interactive boot menu parametersCollin L. Walling2018-02-261-0/+3
| | | | | | | | | Reads boot menu flag and timeout values from the iplb and sets the respective fields for the menu. Signed-off-by: Collin L. Walling <walling@linux.vnet.ibm.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
* pc-bios/s390-ccw: Add code for virtio feature negotiationThomas Huth2017-07-141-0/+2
| | | | | | | | | | The upcoming virtio-net driver needs to negotiate some features, so we need the possibility to do this in the core virtio code. Reviewed-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com> Message-Id: <1499863793-18627-8-git-send-email-thuth@redhat.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
* pc-bios/s390-ccw: Move virtio-block related functions into a separate fileThomas Huth2017-07-141-1/+1
| | | | | | | | | | | The netboot code is going to link against the code from virtio.c, too, so we've got to move the virtio-block and -scsi related code out of the way. Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com> Message-Id: <1499863793-18627-4-git-send-email-thuth@redhat.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
* pc-bios/s390-ccw: Move libc functions to separate headerThomas Huth2017-07-141-29/+0Star
| | | | | | | | | | | | | | The upcoming netboot code will use the libc from SLOF. To be able to still use s390-ccw.h there, the libc related functions in this header have to be moved to a different location. And while we're at it, remove the duplicate memcpy() function from sclp.c. Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com> Message-Id: <1499863793-18627-2-git-send-email-thuth@redhat.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
* pc-bios/s390-ccw: Break up virtio-scsi read into multiplesEric Farman2017-05-191-0/+7
| | | | | | | | | | | | | | A virtio-scsi request that goes through the host sd driver and exceeds the maximum transfer size is automatically broken up for us. But the equivalent request going to the sg driver presumes that any length requirements have already been honored. Let's use the max_sectors field on the virtio-scsi controller device, and break up all requests (both sd and sg) to avoid this problem. Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com> Message-Id: <20170510155359.32727-4-farman@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
* pc-bios/s390-ccw: provide a function to interpret LOADPARM valueFarhan Ali2017-05-021-0/+1
| | | | | | | | | | | | | | | The LOADPARM value is fetched from SCP Read Info, but it's applied only at the phase of bootmap interpretation. So let's read the LOARPARM value and store it. Also provide a parsing function to detect numbers in the LOADPARM which can be used during bootmap interpretation. Remove a stray whitespace. Initial patch from Eugene (jno) Dvurechenski. Signed-off-by: Eugene (jno) Dvurechenski <jno@linux.vnet.ibm.com> Signed-off-by: Farhan Ali <alifm@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
* pc-bios/s390-ccw: get LOADPARM stored in SCP Read InfoFarhan Ali2017-05-021-1/+2
| | | | | | | | | | | | Obtain the loadparm value stored in SCP Read Info by performing a SCLP Read Info request. Rename sclp-ascii.c to sclp.c to reflect the changed scope of the file. Signed-off-by: Farhan Ali <alifm@linux.vnet.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
* pc-bios/s390-ccw: Make ebcdic/ascii conversion publicEugene (jno) Dvurechenski2017-05-021-0/+13
| | | | | | | | | | | Make the ebcdic_to_ascii function public to the rest of the "bios" code, as the volume label is no more the single thing to be converted. Signed-off-by: Eugene (jno) Dvurechenski <jno@linux.vnet.ibm.com> Signed-off-by: Farhan Ali <alifm@linux.vnet.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
* pc-bios/s390-ccw: Get device address via diag 308/6Alexander Yarygin2016-05-171-1/+1
| | | | | | | | | | | | | | | To IPL from a device, pc-bios receives from qemu a device address via general register 7. The better way to do it is to use diag308/6 instruction which returns so called "IplParameterBlock". IplParameterBlock contains the device address for IPL and additional parameters that can be used by pc-bios. This patch allows pc-bios to get device address via diag308/6 and doesn't use gr7 passed boot information anymore. Signed-off-by: Alexander Yarygin <yarygin@linux.vnet.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
* pc-bios/s390-ccw: make provisions for different backendsEugene (jno) Dvurechenski2016-03-231-2/+2
| | | | | | | Add dispatching code to make room for non virtio-blk boot devices. Signed-off-by: Eugene (jno) Dvurechenski <jno@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
* pc-bios/s390-ccw: update virtio implementation to allow up to 3 vringsEugene (jno) Dvurechenski2016-03-231-1/+0Star
| | | | | | | | | | | Add ability to work with up to 3 vrings, which is required for virtio-scsi implementation. Implement the optional cookie to speed up processing of virtio notifications. Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Eugene (jno) Dvurechenski <jno@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
* pc-bios/s390-ccw: qemuize typesEugene (jno) Dvurechenski2016-03-231-2/+10
| | | | | | | | | | | | | | | Turn [the most of] existing declarations from struct type_name { ... }; into struct TypeName { ... }; typedef struct TypeName TypeName; and make use of them. Also switch u{8,16,32,64} to uint{8,16,32,64}_t. Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Eugene (jno) Dvurechenski <jno@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
* pc-bios/s390-ccw: add utility functions and "export" some othersEugene (jno) Dvurechenski2016-03-231-0/+39
| | | | | | | | | Add several utility functions, make IPL_check and IPL_assert generally available, etc. Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Eugene (jno) Dvurechenski <jno@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
* pc-bios/s390-ccw: virtio_panic -> panicEugene (jno) Dvurechenski2016-03-231-1/+1
| | | | | | | | | This function has nothing to do with virtio. Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Eugene (jno) Dvurechenski <jno@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
* s390-ccw.img: Consume service interruptsChristian Borntraeger2015-06-301-0/+1
| | | | | | | | | | We have to consume the outstanding service interrupt after each service call, otherwise a correct implementation will return CC=2 on subsequent service calls. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
* s390-ccw.img: Allow bigger ramdisk sizes or offsetsChristian Borntraeger2015-03-101-0/+1
| | | | | | | | | | | | | | | | | The s390-ccw bios creates the the virtqueue at 100MB. For big ramdisks or offsets (via zipl) this gets overwritten. As a quick band-aid, lets move the virtqueue into the bss section, which is at 0x7f00000. As the bios code (text) is at 0x7e00000 we can now handle ramdisk which are ~27MB bigger. Long term we want to make the s390-ccw bios position independent and load of at the end of memory. Reported-by: Alexander Graf <agraf@suse.de> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Message-Id: <1425310029-53396-2-git-send-email-borntraeger@de.ibm.com>
* pc-bios/s390-ccw: fix sparse warningsChristian Borntraeger2015-02-031-0/+2
| | | | | | | Fix some sparse warnings in the s390-ccw bios. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
* pc-bios/s390-ccw: store proper subsystem information wordChristian Borntraeger2014-07-081-0/+1
| | | | | | | | | | | | POP chapter 17 requires to store a subsystem information word at 184 during IPL. Furthermore bytes 188-191 should be zero. The bootmap might contain data blocks that are written to the first page. We have to write these values after we processed the bootmap and before the final IPL. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
* pc-bios/s390-ccw: Add fill_hex_val func to provide better msgsEugene (jno) Dvurechenski2014-06-271-5/+11
| | | | | | | | | Factor out helper function for dumping a hex value into a buffer. Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Eugene (jno) Dvurechenski <jno@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
* pc-bios/s390-ccw: Unify error handlingEugene (jno) Dvurechenski2014-06-271-1/+1
| | | | | | | | | Convert to IPL_assert and friends Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Eugene (jno) Dvurechenski <jno@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
* pc-bios/s390-ccw: handle different sector sizesEugene (jno) Dvurechenski2014-06-271-1/+1
| | | | | | | | | | | Use the virtio device's configuration to figure out the disk geometry and use a sector size based upon the layout. [CH: s/SECTOR_SIZE/MAX_SECTOR_SIZE/g] Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Eugene (jno) Dvurechenski <jno@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
* pc-bios/s390-ccw: make checkpatch happyEugene (jno) Dvurechenski2014-06-271-10/+10
| | | | | | | | | Remove tabs, tweak whitespace and comments. Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Eugene (jno) Dvurechenski <jno@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
* s390/IPL: Allow boot from other ssid than 0Dominik Dingel2013-07-291-0/+1
| | | | | | | | | | We now take the subchannel set id also into account to find the boot device. If we want to use a subchannel set other than the default set 0, we first need to enable the mss facility. Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
* s390-ccw.img: replace while loop with a disabled wait on s390 biosChristian Borntraeger2013-04-261-0/+3
| | | | | | | | dont waste cpu power on an error condition. Lets stop the guest with a disabled wait. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
* S390: ccw firmware: Add glue headerAlexander Graf2013-04-261-0/+131
Like all great programs, we have to call between different functions in different object files. And all of them need a common ground of defines. Provide a file that provides these defines. Signed-off-by: Alexander Graf <agraf@suse.de>
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