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Add CPU feature checking.

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Introduces the cpu_features.inc table to enumerate the CPU features that
j6 cares about. Features in this table marked CPU_FEATURE_REQ are
considered required, and the boot process will log an error and halt
when any of these features are not supported. This should save me from
banging my head against the wall like I did last night with the missing
pdpe1gb feature.
This commit is contained in:
Justin C. Miller
2019-07-04 16:41:25 -07:00
parent 7ce418aabc
commit 3a68ec439d
4 changed files with 138 additions and 45 deletions
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8
src/kernel/main.cpp
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@@ -78,6 +78,9 @@ kernel_main(kernel_args *header)
log::debug(logs::boot, "ACPI root table is at: %016lx", header->acpi_table);
log::debug(logs::boot, "Runtime service is at: %016lx", header->runtime);
cpu_id cpu;
cpu.validate();
initrd::disk ird(header->initrd, heap);
log::info(logs::boot, "initrd loaded with %d files.", ird.files().count());
for (auto &f : ird.files())
@@ -94,11 +97,6 @@ kernel_main(kernel_args *header)
interrupts_enable();
/*
cpu_id cpu;
log::info(logs::boot, "CPU Vendor: %s", cpu.vendor_id());
log::info(logs::boot, "CPU Family %x Model %x Stepping %x",
cpu.family(), cpu.model(), cpu.stepping());
auto r = cpu.get(0x15);
log::info(logs::boot, "CPU Crystal: %dHz", r.ecx);