52 lines
2.0 KiB
C
52 lines
2.0 KiB
C
/*
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* kernel_args.h — boot command-line argument structure and defaults
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*
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* KernelArgs is populated by the UEFI loader from LoadOptions (or the
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* one-shot StarForthBootArgs NVRAM variable) and carried to kernel_main
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* via BootInfo.args. All fields have safe defaults so the kernel boots
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* normally when no arguments are present.
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*/
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#ifndef STARKERNEL_KERNEL_ARGS_H
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#define STARKERNEL_KERNEL_ARGS_H
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#include <stdint.h>
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/* ---- Buffer size -------------------------------------------------------- */
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/* Shared by BootInfo.args.raw, the NVRAM variable payload, and cmdline.c. */
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#define KERNEL_ARGS_CMDLINE_MAX 512
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/* ---- Defaults ----------------------------------------------------------- */
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#define KARGS_DEFAULT_STACK_SIZE (2ULL * 1024ULL * 1024ULL) /* 2 MB */
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#define KARGS_DEFAULT_HEAP_SIZE (2ULL * 1024ULL * 1024ULL * 1024ULL) /* 2 GB */
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#define KARGS_DEFAULT_LOG_LEVEL 1 /* info */
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#define KARGS_DEFAULT_RUN_DOE 0
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/* ---- Log level constants ------------------------------------------------ */
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#define KARGS_LOG_DEBUG 0
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#define KARGS_LOG_INFO 1
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#define KARGS_LOG_WARN 2
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#define KARGS_LOG_ERROR 3
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/* ---- REBOOT escape hatch ------------------------------------------------ */
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/* Max consecutive REBOOT attempts before the escape hatch fires.
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* On the Nth boot the counter is checked; if >= REBOOT_MAX_TRIES the
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* REBOOT word drops to REPL instead of calling ResetSystem. */
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#define REBOOT_MAX_TRIES 3
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/* ---- Struct ------------------------------------------------------------ */
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typedef struct {
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/* Memory sizing — 0 means "use default" */
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uint64_t stack_size; /* --stack=<N>[KMG] */
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uint64_t heap_size; /* --heap=<N>[KMG] */
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/* Runtime behaviour */
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int run_doe; /* --doe (0 = off) */
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int log_level; /* --log-level=... (KARGS_LOG_*) */
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/* Raw unparsed cmdline; always NUL-terminated */
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char raw[KERNEL_ARGS_CMDLINE_MAX];
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} KernelArgs;
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#endif /* STARKERNEL_KERNEL_ARGS_H */
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