3 commits

Author	SHA1	Message	Date
Sönke Holz	227818de9b	Kernel/riscv64: Don't use the memory before .text as the initial stack ... This new stack has the same size as the x86_64 prekernel stack (32K).	2024-02-19 00:41:17 +01:00
Sönke Holz	d0e3065ced	Kernel/riscv64: Don't touch reserved fields of the sstatus CSR in boot.S ... Multiple fields in sstatus are defined as WPRI "Reserved Writes Preserve Values, Reads Ignore Values", which means we have to preserve their values when writing to other fields in the same CSR. We don't really need to touch any fields except SIE. Interrupts are probably already disabled, but just to be safe, disable them explicitly.	2024-02-08 08:13:47 -07:00
Sönke Holz	6ef2c34eb4	Kernel: Add riscv64 assembly startup code ... This adds a simple boot.S for RISC-V (64-bit), which clears the BSS and sets up the processor to be ready for pre_init.cpp (which is not added yet).	2023-08-29 11:07:06 +02:00