Files
LithosAnanake/kernel/include/starkernel/kernel_args.h
T
rajamesandClaude Opus 5.5 1a4b163861 feat(boards): both systems on every board image, chosen at boot -- system=v3 or system=v4
boards/BRINGUP.md A6, FABRIC-3 SXLIII (ruled: one image, switch at boot).
A STARFORTH_V4 kernel carries v3 too; system= in the boot arguments
chooses, else the build's default (V4_DEFAULT: 1 for plain STARFORTH_V4
builds as before, 0 for board images).  make boot_image builds both and
always writes starforth.cfg / cmdline.txt with system=v3 first, and cleans
its ISA's objects first -- that clean was removing build/<arch>/SER5, not
the kernel's objects, until fixed here.

Each ISA: v3 by default (hash unchanged), v4 with system=v4 (538/538).
The SER5 image under OVMF: v3 as built, v4 after a one-word edit on it.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-14 15:11:47 -04:00

59 lines
2.4 KiB
C

/*
* kernel_args.h — boot command-line argument structure and defaults
*
* KernelArgs is populated by the UEFI loader from LoadOptions (or the
* one-shot StarForthBootArgs NVRAM variable) and carried to kernel_main
* via BootInfo.args. All fields have safe defaults so the kernel boots
* normally when no arguments are present.
*/
#ifndef STARKERNEL_KERNEL_ARGS_H
#define STARKERNEL_KERNEL_ARGS_H
#include <stdint.h>
/* ---- Buffer size -------------------------------------------------------- */
/* Shared by BootInfo.args.raw, the NVRAM variable payload, and cmdline.c. */
#define KERNEL_ARGS_CMDLINE_MAX 512
/* ---- Defaults ----------------------------------------------------------- */
#define KARGS_DEFAULT_STACK_SIZE (2ULL * 1024ULL * 1024ULL) /* 2 MB */
#define KARGS_DEFAULT_HEAP_SIZE (2ULL * 1024ULL * 1024ULL * 1024ULL) /* 2 GB */
#define KARGS_DEFAULT_LOG_LEVEL 2 /* warn — quiet by default; --log-level=info/debug re-enables ECW word-execution tracing */
#define KARGS_DEFAULT_RUN_DOE 0
/* Which system runs, where a kernel carries both (boards/BRINGUP.md A6,
* ruled 2026-10-14: one image, chosen at boot). DEFAULT means the build's
* own default (kernel/Makefile V4_DEFAULT). */
#define KARGS_SYSTEM_DEFAULT 0
#define KARGS_SYSTEM_V3 3
#define KARGS_SYSTEM_V4 4
/* ---- Log level constants ------------------------------------------------ */
#define KARGS_LOG_DEBUG 0
#define KARGS_LOG_INFO 1
#define KARGS_LOG_WARN 2
#define KARGS_LOG_ERROR 3
/* ---- REBOOT escape hatch ------------------------------------------------ */
/* Max consecutive REBOOT attempts before the escape hatch fires.
* On the Nth boot the counter is checked; if >= REBOOT_MAX_TRIES the
* REBOOT word drops to REPL instead of calling ResetSystem. */
#define REBOOT_MAX_TRIES 3
/* ---- Struct ------------------------------------------------------------ */
typedef struct {
/* Memory sizing — 0 means "use default" */
uint64_t stack_size; /* --stack=<N>[KMG] */
uint64_t heap_size; /* --heap=<N>[KMG] */
/* Runtime behaviour */
int run_doe; /* --doe (0 = off) */
int log_level; /* --log-level=... (KARGS_LOG_*) */
int system; /* system=v3 | system=v4 (KARGS_SYSTEM_*), 2026-10-14 */
/* Raw unparsed cmdline; always NUL-terminated */
char raw[KERNEL_ARGS_CMDLINE_MAX];
} KernelArgs;
#endif /* STARKERNEL_KERNEL_ARGS_H */