openslx-ng/ipxe.git/src/arch/x86, branch master

[init] Show startup and shutdown function names in debug messages

2019-01-25T14:53:43+00:00

Signed-off-by: Michael Brown

[pci] Correct invalid base-class/sub-class/prog-if order in PCIR

2019-01-15T13:08:44+00:00

PCI Configuration Space contains fields prog-if at the offset 0x09, sub-class at the offset 0x0a and base-class at the offset 0x0b (it respects little endian). PCIR structure uses these fields in the same order. Signed-off-by: Michael Brown

[undi] Include subsystem IDs in broken interrupt device check

2018-04-18T15:57:05+00:00

Allow the subsystem IDs to be used when checking for PXE stacks with broken interrupt support. Suggested-by: Levi Hsieh Signed-off-by: Michael Brown

[librm] Ensure that inline code symbols are unique

2018-03-21T15:00:53+00:00

Commit 6149e0a ("[librm] Provide symbols for inline code placed into other sections") may cause build failures due to duplicate label names if the compiler chooses to duplicate inline assembly code. Fix by using the "%=" special format string to include a guaranteed-unique number within the label name. The "%=" will be expanded only if constraints exist for the inline assembly. This fix therefore requires that all REAL_CODE() fragments use a (possibly empty) constraint list. Signed-off-by: Michael Brown

[librm] Provide symbols for inline code placed into other sections

2018-03-21T12:44:04+00:00

Provide symbols constructed from the object name and line number for code fragments placed into alternative sections, such as inline REAL_CODE() assembly placed into .text16. This simplifies the debugging task of finding the source code corresponding to a given instruction pointer. Note that we cannot use __FUNCTION__ since it is not a preprocessor macro and so cannot be concatenated with string literals. Signed-off-by: Michael Brown

[undi] Treat invalid IRQ numbers as non-fatal errors

2018-03-21T08:28:05+00:00

If the underlying PXE stack reports an invalid IRQ number (above IRQ_MAX), treat this as equivalent to an empty IRQ number and fall back to using polling mode. Signed-off-by: Michael Brown

[rng] Use fixed-point calculations for min-entropy quantities

2018-03-20T18:56:01+00:00

We currently perform various min-entropy calculations using build-time floating-point arithmetic. No floating-point code ends up in the final binary, since the results are eventually converted to integers and asserted to be compile-time constants. Though this mechanism is undoubtedly cute, it inhibits us from using "-mno-sse" to prevent the use of SSE registers by the compiler. Fix by using fixed-point arithmetic instead. Signed-off-by: Michael Brown

[time] Add support for the ACPI power management timer

2018-03-20T15:26:49+00:00

Allow the ACPI power management timer to be used if enabled via TIMER_ACPI in config/timer.h. This provides an alternative timer on systems where the standard 8254 PIT is unavailable or unreliable. Signed-off-by: Michael Brown

[librm] Add facility to provide register and stack dump for CPU exceptions

2018-03-18T12:59:34+00:00

When DEBUG=librm_mgmt is enabled, intercept CPU exceptions and provide a register and stack dump, then drop to an emergency shell. Exiting from the shell will almost certainly not work, but this provides an opportunity to view the register and stack dump and carry out some basic debugging. Note that we can intercept only the first 8 CPU exceptions, since a PXE ROM is not permitted to rebase the PIC. Signed-off-by: Michael Brown

[build] Avoid use of "ld --oformat binary"

2018-01-02T20:26:40+00:00

Using "ld --oformat binary" for mbr.bin and usbdisk.bin seems to cause segmentation faults on some versions of binutils (observed on Fedora 27). Work around this problem by using ld to create an intermediate ELF object, followed by objcopy (via the existing %.tmp -> %.bin rule) to create the final binary. Note that we cannot simply use a single-stage "objcopy -O binary" since this will not process the relocation records for x86_64: see commit 1afcccd ("[build] Do not use "objcopy -O binary" for objects with relocation records"). Reported-by: Brent S Signed-off-by: Michael Brown