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[boot] Load programs in boot, not kernel

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Remove ELF and initrd loading from the kernel. The bootloader now loads
the initial programs, as it does with the kernel. Other files that were
in the initrd are now on the ESP, and non-program files are just passed
as modules.
This commit is contained in:
Justin C. Miller
2020-10-04 17:11:03 -07:00
parent da38006f44
commit 4ccaa2dfea
19 changed files with 282 additions and 351 deletions
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15
src/kernel/memory_bootstrap.cpp
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@@ -103,20 +103,19 @@ void walk_page_table(
void
memory_initialize_pre_ctors(args::header *kargs)
{
args::mem_entry *entries = kargs->mem_map;
size_t entry_count = kargs->num_map_entries;
page_table *kpml4 = reinterpret_cast<page_table*>(kargs->pml4);
new (&g_kernel_heap) kutil::heap_allocator {heap_start, kernel_max_heap};
new (&g_frame_allocator) frame_allocator;
for (unsigned i = 0; i < entry_count; ++i) {
args::mem_entry *entries = kargs->mem_map;
const size_t count = kargs->map_count;
for (unsigned i = 0; i < count; ++i) {
// TODO: use entry attributes
args::mem_entry &e = entries[i];
if (e.type == args::mem_type::free)
g_frame_allocator.free(e.start, e.pages);
}
page_table *kpml4 = reinterpret_cast<page_table*>(kargs->pml4);
process *kp = process::create_kernel_process(kpml4);
vm_space &vm = kp->space();
@@ -153,7 +152,7 @@ memory_initialize_post_ctors(args::header *kargs)
vm.add(memory::buffers_start, &g_kernel_buffers);
g_frame_allocator.free(
reinterpret_cast<uintptr_t>(kargs->page_table_cache),
kargs->num_free_tables);
reinterpret_cast<uintptr_t>(kargs->page_tables),
kargs->table_count);
}