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* [build] Centralise dummy architecture-specific headersriscv64Michael Brown2024-09-0314-176/+0
| | | | | | | | Simplify the process of adding a new CPU architecture by providing common implementations of typically empty architecture-specific header files. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [mp] Define an API for multiprocessor functionsMichael Brown2024-03-151-0/+12
| | | | | | | | | | | | | Define an API for executing very limited functions on application processors in a multiprocessor system, along with an x86-only implementation. The normal iPXE runtime environment is effectively non-existent on application processors. There is no ability to make firmware calls (e.g. to write to a console), and there may be no stack space available. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [loong64] Replace broken big integer arithmetic implementationsMichael Brown2024-01-191-78/+106
| | | | | | | | | | | | | The slightly incomprehensible LoongArch64 implementation for bigint_subtract() is observed to produce incorrect results for some input values. Replace the suspicious LoongArch64 implementations of bigint_add(), bigint_subtract(), bigint_rol() and bigint_ror(), and add a test case for a subtraction that was producing an incorrect result with the previous implementation. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [crypto] Allow multiplicand and multiplier to differ in sizeMichael Brown2024-01-161-1/+3
| | | | | | | | | | | Big integer multiplication is currently used only as part of modular exponentiation, where both multiplicand and multiplier will be the same size. Relax this requirement to allow for the use of big integer multiplication in other contexts. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [loong64] Add CPU sleeping API for EFI LoongArch64Xiaotian Wu2023-06-291-1/+3
| | | | | | Signed-off-by: Xiaotian Wu <wuxiaotian@loongson.cn> Modified-by: Michael Brown <mcb30@ipxe.org> Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [loong64] Add I/O API for LoongArch64Xiaotian Wu2023-06-291-0/+2
| | | | | | Signed-off-by: Xiaotian Wu <wuxiaotian@loongson.cn> Modified-by: Michael Brown <mcb30@ipxe.org> Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [rng] Allow entropy source to be selected at runtimeMichael Brown2023-02-171-12/+0
| | | | | | | | | | | | | | | | | | | | | | | | As noted in commit 3c83843 ("[rng] Check for several functioning RTC interrupts"), experimentation shows that Hyper-V cannot be trusted to reliably generate RTC interrupts. (As noted in commit f3ba0fb ("[hyperv] Provide timer based on the 10MHz time reference count MSR"), Hyper-V appears to suffer from a general problem in reliably generating any legacy interrupts.) An alternative entropy source is therefore required for an image that may be used in a Hyper-V Gen1 virtual machine. The x86 RDRAND instruction provides a suitable alternative entropy source, but may not be supported by all CPUs. We must therefore allow for multiple entropy sources to be compiled in, with the single active entropy source selected only at runtime. Restructure the internal entropy API to allow a working entropy source to be detected and chosen at runtime. Enable the RDRAND entropy source for all x86 builds, since it is likely to be substantially faster than any other source. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [loong64] Add initial support for LoongArch64Xiaotian Wu2023-02-0626-0/+915
Add support for building a LoongArch64 Linux userspace binary. Signed-off-by: Xiaotian Wu <wuxiaotian@loongson.cn> Modified-by: Michael Brown <mcb30@ipxe.org> Signed-off-by: Michael Brown <mcb30@ipxe.org>
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