Fix Multitasking and Integrate Alix Features#6
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- Fixed critical bug in `unice64_context_switch` assembly where RSP was incorrectly set to the TCB address instead of the task's stack pointer. - Aligned `task_t` structure to ensure `fxsave_region` is at offset 192 and 16-byte aligned, matching the updated context switcher. - Restored full AHCI and XHCI hardware support from the last known working state. - Integrated SIMD/SSE support by enabling CR0/CR4 bits and implementing state preservation in the scheduler. - Added configurable keyboard repeat (initial delay/repeat rate) with a new `kbd-config` shell command. - Enabled path invocation support in the shell (e.g., `./path/to/bin`). - Cleaned up build system by enabling SSE for kernel and userland programs. Co-authored-by: rtech-technologies <254326487+rtech-technologies@users.noreply.github.com>
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- Fixed critical bug in `unice64_context_switch` assembly where RSP was incorrectly set to the TCB address instead of the task's stack pointer. - Aligned `task_t` structure to ensure `fxsave_region` is at offset 192 and 16-byte aligned, matching the updated context switcher. - Restored full AHCI and XHCI hardware support from the last known working state. - Integrated SIMD/SSE support by enabling CR0/CR4 bits and implementing state preservation in the scheduler. - Added configurable keyboard repeat (initial delay/repeat rate) with a new `kbd-config` shell command. - Enabled path invocation support in the shell (e.g., `./path/to/bin`). - Cleaned up build system by enabling SSE for kernel and userland programs. Co-authored-by: rtech-technologies <254326487+rtech-technologies@users.noreply.github.com>
- Overhaulled AHCI driver with bounded polling and spec-compliant COMRESET to prevent "LINK ESTABLISHED" stall. - Fixed critical corruption in `unice64_context_switch` by using RCX for RSP validation instead of RAX. - Aligned `task_t` structure to ensure `fxsave_region` is at offset 192 (16-byte aligned). - Added safety timeouts to PIT delay logic. - Integrated Alix features: path invocation (`./path`) and configurable keyboard repeat. - Verified build and memory map consistency. Co-authored-by: rtech-technologies <254326487+rtech-technologies@users.noreply.github.com>
- Corrected AHCI initialization sequence to follow the "Sovereign Order": ensuring `PxCLB` and `PxFB` are set only when `ST` and `FRE` are 0. - Overhaulled `ahci_port_stop` and `ahci_port_start` for AHCI 1.3 spec compliance. - Increased AHCI Command List and FIS area alignment to 4KB for improved hardware compatibility. - Fixed critical `RAX` corruption in `unice64_context_switch` by utilizing `RCX` as a scratch register during RSP validation. - Synchronized `task_t` structure padding to guarantee 16-byte alignment of the SSE `fxsave_region` at offset 192. - Integrated Alix features: path-based binary invocation (`./path`) and configurable keyboard repeat controls via the RSL shell. - Added bounded loop counters and safety timeouts to hardware polling and PIT delay logic. Co-authored-by: rtech-technologies <254326487+rtech-technologies@users.noreply.github.com>
- Fixed AHCI boot stall by reordering the kernel ritual: APIC timer now starts before hardware discovery, ensuring `pit_wait_ms` works. - Implemented AHCI "Sovereign Order": `PxCLB` and `PxFB` are now set strictly while `ST` and `FRE` are disabled. - Corrected critical `RAX` corruption in `unice64_context_switch` by using `RCX` as a scratch register for RSP validation. - Fixed task state restoration by ensuring `fxrstor` uses the correct TCB pointer in `RAX`. - Aligned `task_t` padding to keep `fxsave_region` at offset 192 (16-byte aligned) for architectural consistency. - Integrated Alix features: modern shell with `./path` invocation and configurable keyboard repeat. - Optimized AHCI and USB polling with bounded loop counters and safety timeouts. Co-authored-by: rtech-technologies <254326487+rtech-technologies@users.noreply.github.com>
… logic - Fixed AHCI boot stall by reordering kernel initialization: APIC timer now starts before hardware discovery. - Implemented AHCI "Sovereign Order": PxCLB/PxFB are set strictly while port engine is stopped. - Corrected multitasking corruption: `unice64_context_switch` now uses RCX for validation to preserve the RAX TCB pointer. - Refined boot logic: System now scans for Sovereign volumes and provides a recovery menu (Safe Mode/Format) if none are found. - Updated `boot/linker.ld` with 4KB alignment and preserved the `*(.programs)` section. - Integrated Alix features: configurable keyboard repeat and `./path` execution. - Ensured bit-perfect `task_t` alignment for SSE state preservation. Co-authored-by: rtech-technologies <254326487+rtech-technologies@users.noreply.github.com>
Restored core hardware drivers (AHCI, xHCI, ATAPI) from last working branch. Fixed a fatal bug in the assembly context switcher that corrupted task state and stack pointers. - Implemented spec-compliant AHCI 'Sovereign Order' initialization to fix boot stalls. - Aligned task_t structure to ensure 16-byte SSE (fxsave) alignment. - Integrated configurable keyboard repeat and path-based shell invocation from Alix OS. - Added a recovery boot menu for Safe Mode or disk formatting. - Updated documentation and set bootloader to quiet mode. Co-authored-by: rtech-technologies <254326487+rtech-technologies@users.noreply.github.com>
…dalone RSL binaries Restored core hardware drivers (AHCI, xHCI, ATAPI) and fixed critical multitasking stability issues. Implemented explicit SSE support across the kernel and standalone programs. - Enabled -msse -msse2 flags in Makefile. - Hardened interrupt handler to preserve SSE state. - Refactored shell and text_editor into standalone RSL binaries. - Fixed x86_64 context switch stack restoration and TCB validation. - Implemented 'Sovereign Order' AHCI initialization ritual. - Added recovery boot menu and quiet mode for Limine. Co-authored-by: rtech-technologies <254326487+rtech-technologies@users.noreply.github.com>
Restored core hardware drivers (AHCI, xHCI, ATAPI) and fixed critical multitasking stability issues. Reintegrated the RSL shell into the kernel binary while maintaining SSE support. - Reverted shell to kernel integration for improved boot stability. - Implemented professional boot flow (logo, spinner, silent VGA logs). - Fixed x86_64 context switch stack restoration and SSE preservation. - Hardened AHCI 'Sovereign Order' initialization ritual. - Enabled explicit SSE support (-msse -msse2) in Makefile. - Added recovery boot menu and configured Limine to quiet mode. Co-authored-by: rtech-technologies <254326487+rtech-technologies@users.noreply.github.com>
Finalized the restoration of the OS to match the requested features while fixing critical multitasking and hardware stability issues. - Reintegrated the RSL shell into the kernel binary for stability. - Enabled VGA printing during the boot sequence by default. - Removed all USB (xHCI) support as requested. - Eliminated artificial boot delays from the initialization sequence. - Preserved 'Sovereign Order' AHCI initialization and SSE support. - Hardened the multitasking context switcher and interrupt handlers. - Updated recovery menu to support installation and safe mode. Co-authored-by: rtech-technologies <254326487+rtech-technologies@users.noreply.github.com>
Implemented the CMD-LETS library providing bash-like scripting capabilities (if/fi, variables, expansion) for RSL commands. Added a standalone JIT program to execute these scripts. - Created include/cmdlets.h and kernel/libs/core/cmdlets.c. - Created programs/jit.c (Just In Time compiler/interpreter). - Added RSL system call gate (0x03) and handler in rsl_syscalls.c. - Refactored forensic_panic to use a single atomic report loop. - Reintegrated RSL shell into kernel binary for startup stability. - Enabled VGA printing by default during boot. - Removed USB (xHCI) support as requested. - Maintained SSE support and multitasking stability fixes. Co-authored-by: rtech-technologies <254326487+rtech-technologies@users.noreply.github.com>
- Created CMD-LETS library for bash-like scripting (if/fi, variables). - Added JIT standalone program for script execution. - Refactored forensic_panic to use a single atomic print loop and halt. - Restored VGA boot printing and kernel-integrated shell. - Removed USB support and optimized boot performance. - Maintained SSE support and AHCI stability fixes. Co-authored-by: rtech-technologies <254326487+rtech-technologies@users.noreply.github.com>
This commit performs a comprehensive overhaul of the OS, merging core stability from the last working bootstrap with advanced features from the Alix project. Key Changes: - Hardware: Fixed AHCI 'Init-Stall' by enforcing Sovereign Order (engine stopped during address registration) and pre-initializing the APIC timer for driver delays. - Tasking: Overhauled unice64 context switcher to fix RSP restoration logic and added SSE state preservation (fxsave/fxrstor) with guaranteed 16-byte alignment in task_t. - Shell: Re-integrated the shell into the kernel for immediate boot availability. Added the CMD-LETS scripting library (if/fi, variables, expansion) and the JIT standalone compiler. - System: Hardened forensic_panic for atomic VGA/Serial reporting and implemented 'quiet' boot parsing for the Limine command line. - Cleanup: Completely removed xHCI/USB stack to streamline the kernel per project requirements. - Build: Updated Makefile and limine.cfg for the new ISO root layout and Sovereign branding. Co-authored-by: rtech-technologies <254326487+rtech-technologies@users.noreply.github.com>
This commit addresses the reported hang during AHCI initialization by hardening the timer subsystem and strictly enforcing the AHCI engine state machine. Changes: - Timer: Re-implemented pit_wait_ms using PIT Mode 1 (Hardware One-Shot) to provide reliable timing before interrupts are enabled. - AHCI: Ensured DMA engines (ST/FRE) are fully stopped before registering memory addresses. Added detailed serial logging for port link status and engine transitions. - Boot: Updated main.c to parse Limine command line for 'quiet' flag. Added forced serial telemetry for the critical init sequence. - Loader: Fixed 32-byte header offset bug in tasking_spawn_app to ensure compatibility with standalone RSL binaries. - Stability: Aligned kernel stack to 16-byte boundary for SSE/ABI compliance. Co-authored-by: rtech-technologies <254326487+rtech-technologies@users.noreply.github.com>
This commit fixes the kernel hang during AHCI initialization and ensures that all system output is reliably transmitted via Serial for debugging and hardware discovery visibility. Changes: - AHCI: Implemented strict HBA port stop sequence (ST/FRE clear) before registering memory addresses to prevent controller state-machine stalls. Added verbose serial diagnostics for link training. - Timer: Hardened pit_wait_ms with a robust PIT Mode 0 polling loop and safety timeouts for use during early boot. - Console: Simplified the printing architecture to remove unstable worker tasks. print() and vga_print() now mirror all output to Serial synchronously, ensuring visibility during critical init phases. - Boot: Added early serial_init to the kernel entry point and resolved linker errors in limine_reqs.c. - Tasking: Integrated soft-yielding via interrupt 0x81 to improve multitasking stability during hardware polling. Co-authored-by: rtech-technologies <254326487+rtech-technologies@users.noreply.github.com>
This commit resolves the AHCI initialization stall and implements a robust printing architecture that mirrors all console output to Serial COM1 for full system visibility during boot. Hardware/Boot: - AHCI: Implemented a strict 'Sovereign Order' sequence (stop engine -> register addresses -> start engine) to prevent controller deadlocks. - Timer: Hardened pit_wait_ms with a reliable PIT Mode 0 delay loop. - Boot: Updated main.c to parse Limine cmdline for 'quiet' and initialize Serial immediately. Printing: - Mirrored VGA to Serial: vga_write_char now always transmits to Serial before checking g_vga_silent for drawing. - Simplified console.c to remove unstable worker tasks and unify output routing through vga_write_char. Shell/Tasking: - Shell: Added 'run' and 'exec' commands. Fixed binary loader to skip the 32-byte RSL header. - Tasking: Added soft-yielding via interrupt 0x81 and ensured 16-byte alignment for task_t structures. - ISO: Refined Makefile and ISO root layout for Limine compatibility. Co-authored-by: rtech-technologies <254326487+rtech-technologies@users.noreply.github.com>
This commit stabilizes the OSx2 Limemade kernel by fixing the AHCI initialization hang and implementing a two-phase boot logging strategy with robust VGA-to-Serial mirroring. Key Changes: - Hardware: Implemented 'Sovereign Order' AHCI initialization in ahci.c, ensuring engines are stopped during address registration. Hardened pit_wait_ms for reliable early-boot delays. - Printing: Implemented true VGA-to-Serial mirroring in vga_write_char. All system output (kernel/shell) is mirrored to Serial COM1. - Boot Flow: Updated main.c to display all hardware discovery logs on VGA and then switch to silent mode (g_vga_silent=true) immediately before starting the shell task. - Tasking: Added soft-yield via interrupt 0x81 and enforced 16-byte alignment for task_t to support SSE state preservation (fxsave). - Shell: Added 'run' and 'exec' commands and fixed the 32-byte RSL header offset bug in the binary loader. - Stability: Resolved 'get_kernel_file' linker error and unified all print calls to route through the mirroring console. Co-authored-by: rtech-technologies <254326487+rtech-technologies@users.noreply.github.com>
… logging This commit stabilizes the Sovereign kernel and implements the requested feature set from the Alix project. Key Features & Fixes: - Hardware: Resolved AHCI 'Init-Stall' by reordering timer init and enforcing HBA engine stop before address registration. - Logging: Implemented a two-phase logging strategy. Full VGA visibility during boot/discovery, then VGA silence for the shell while maintaining robust Serial mirroring via vga_write_char. - Tasking: Fixed context-switch stack corruption and added SSE state preservation with strict 16-byte alignment in task_t. - Shell: Integrated the shell into the kernel for boot stability. Added support for program execution (./, exec, run) and fixed the binary loader to correctly skip the 32-byte RSL header. - Scripting: Added the CMD-LETS engine and JIT standalone compiler. - Cleanup: Removed redundant USB (xHCI) code and unified printing to ensure reliable system diagnostics. - Build: Updated Makefile and ISO layout for high-half kernel and standalone binary support. Co-authored-by: rtech-technologies <254326487+rtech-technologies@users.noreply.github.com>
This commit resolves the AHCI boot stall and integrates a full suite of features including multitasking, scripting, and standalone binary support. Key Improvements: - Hardware: Resolved AHCI 'Init-Stall' by reordering timer init and enforcing HBA engine stop before address registration. - Mirroring: Implemented true VGA-to-Serial mirroring. Every console character is transmitted to Serial COM1. - Boot Flow: Modified main.c to display all boot logs on VGA, then silence the VGA console immediately before shell start (Phase 2). - Tasking: Fixed context-switch corruption and implemented SSE state preservation with strict 16-byte alignment. - Shell: Integrated shell for stability; added './', 'exec', and 'run' command support for programs and scripts. - Scripting: Integrated CMD-LETS engine and JIT standalone compiler. - Loader: Fixed binary compatibility by skipping the 32-byte RSL header. - Cleanup: Removed redundant USB (xHCI) code and unified printing architecture for maximum reliability. - Build: Updated Makefile and Limine config for high-half kernel and correct ISO root structure. Co-authored-by: rtech-technologies <254326487+rtech-technologies@users.noreply.github.com>
- Resolved AHCI 'Init-Stall' by enforcing Sovereign Order (Stop->Register->Start). - Overhauled unice64 multitasking with SSE support (fxsave/fxrstor) and 16-byte alignment. - Implemented VGA-to-Serial mirroring and two-phase boot logging. - Integrated CMD-LETS scripting engine and fixed RSL binary loader (32-byte header skip). - Optimized AHCI hardware audit to prevent redundant engine resets. - Hardened SSE stack safety in interrupt handlers. - Fixed ISO layout and Limine configuration for root-level kernel loading. Co-authored-by: rtech-technologies <254326487+rtech-technologies@users.noreply.github.com>
- Implemented recursive directory injection in `fat_tool.py` to support nested ramdisk structures. - Reorganized `iso_root` layout: kernel and ramdisk moved to `/boot`, binaries to `/bin`, and system scripts to `/sys`. - Updated `limine.cfg` and `Makefile` to reflect the new standardized folder locations. - Modified kernel initialization to support `INITRD:/` registration and fallback `BOOT:/` aliasing. - Updated shell paths for automated boot scripts. Co-authored-by: rtech-technologies <254326487+rtech-technologies@users.noreply.github.com>
- Fixed shell entry point mismatch by restoring `task_shell` safety wrapper. - Implemented `translate_user_ptr` in the syscall handler to support relative addressing for standalone RSL binaries. - Hardened FatFS `f_write` with a read-modify-write loop and fixed `resolve_path_to_cluster` component transitions. - Improved `slab_alloc_persistent` with a multi-depth 'Sovereign Shield' to support nested filesystem operations. - Fixed Window Manager dragging logic and implemented Z-order reordering for focused windows. - Ensured 16-byte stack alignment across all assembly-to-C transitions (IRQs and Syscalls). - Updated the build system to generate default system scripts and maintain a standardized ISO structure. Co-authored-by: rtech-technologies <254326487+rtech-technologies@users.noreply.github.com>
- Implement Sovereign AHCI Handshake: force ICC to Active and set SUD bit to resolve QEMU-specific stalls (0x130 TFD). - Multi-Stage AHCI Boot: scan ports 0-4 synchronously during init; defer ports 5-31 to a background kernel thread (ahci_bg). - Integrate Nuklear GUI: provide a fixed-memory backend and a minimal userland C library (rsl_libc.h) for standalone RSL binaries. - Unified Console Output: route all output through vga_write_char for consistent Serial/VGA mirroring and remove redundant prints. - Stability Fixes: preserve SSE state in multitasking, fix stack alignment in interrupt stubs, and resolve build breakers in vdisk/FatFS. - Cleanup: remove dead XHCI driver code. Co-authored-by: rtech-technologies <254326487+rtech-technologies@users.noreply.github.com>
- Resolved AHCI 0x130 TFD stall by forcing ICC Active and SUD bits in `ahci_port_start`. - Implemented background AHCI scanning for ports 5-31 via dedicated kernel thread. - Integrated Nuklear immediate-mode GUI with a custom direct-framebuffer backend. - Added RSL service gate syscalls for Mouse (ID 204), Framebuffer (ID 202), and Pixel Drawing (ID 213). - Unified kernel/shell output through a VGA-Serial mirroring gate in `vga_write_char`. - Implemented `programs/nuklear/rsl_libc.h` to provide standalone RSL binaries with memory and math symbols. - Hardened tasking and interrupt stubs for 16-byte SSE stack alignment safety. Co-authored-by: rtech-technologies <254326487+rtech-technologies@users.noreply.github.com>
…mentation - Integrated CherryUSB Host Stack core into the kernel. - Implemented 'Primary Receive/Process Task' architecture for USB event handling. - Refactored Nuklear backend to use a new standard C library (libc) in `programs/libc/`. - Implemented `malloc`, `free`, `memcpy`, `memset`, and basic math in `programs/libc/`. - Updated kernel with `rsl_get_new_transient_slab` (ID 201) to support userland heap allocation. - Refactored `Makefile` to build all binaries from source, ensuring a clean, source-only repository. - Updated `.gitignore` to strictly exclude all binaries, ISOs, and build artifacts. Co-authored-by: rtech-technologies <254326487+rtech-technologies@users.noreply.github.com>
…mentation - Integrated CherryUSB Host Stack core into the kernel. - Implemented 'Primary Receive/Process Task' architecture for USB event handling. - Refactored Nuklear backend to use a new standard C library (libc) in `programs/libc/`. - Implemented `malloc`, `free`, `memcpy`, `memset`, and essential math/string functions in `programs/libc/`. - Standardized memory management headers (`stdlib.h`, `string.h`, `math.h`) across the kernel and programs. - Updated kernel with `rsl_get_new_transient_slab` (ID 201) to support userland heap allocation. - Refactored `Makefile` to build all binaries from source, ensuring a clean, source-only repository. - Updated `.gitignore` to strictly exclude all binaries, ISOs, and build artifacts. Co-authored-by: rtech-technologies <254326487+rtech-technologies@users.noreply.github.com>
- Implemented `STDE` command in shell to launch the Window Manager (`wm.bin`). - Standardized memory management by including `<include/stdlib.h>`, `<include/string.h>`, and `<include/math.h>` across kernel and programs. - Removed redundant manual declarations of `malloc`, `free`, `memcpy`, and `memset`. - Enhanced userland `malloc` and `realloc` in `programs/libc/libc.c` with an `alloc_header_t` to track allocation sizes, ensuring safe `realloc` operations. - Updated `usbh_primary_task` signature and enrollment to ensure ABI compliance. - Verified that all programs and kernel components correctly reference the new centralized libc headers. Co-authored-by: rtech-technologies <254326487+rtech-technologies@users.noreply.github.com>
- Implemented `STDE` shell command to launch the window manager (`wm.bin`). - Refined userland `malloc`/`realloc` in `programs/libc/libc.c` to use an `alloc_header_t` for safe size tracking. - Standardized `usbh_primary_task` signature and enrollment. - Performed system-wide header cleanup, replacing manual declarations with `<include/stdlib.h>` and `<include/string.h>`. - Ensured a clean, source-only repository by removing all build artifacts. Co-authored-by: rtech-technologies <254326487+rtech-technologies@users.noreply.github.com>
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This submission fixes the broken multitasking system by correcting the assembly context switcher and Task Control Block (TCB) alignment. It also restores stable hardware drivers (AHCI/XHCI) and integrates several features from the 'alix' OS, including kernel-level SSE support, configurable keyboard repeat controls, and path-based binary invocation in the shell.
PR created automatically by Jules for task 15811689905368575737 started by @rtech-technologies