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Read memory map tags from multiboot

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This commit is contained in:
Thomas Lovén
2017-12-19 22:51:11 +01:00
parent 0b3648de7c
commit 80cc165957
4 changed files with 113 additions and 14 deletions
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72
src/kernel/boot/multiboot.tt
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@@ -149,3 +149,75 @@ TEST(reads_multiple_tags_4)
ASSERT_EQ_STR(kernel_boot_data.bootloader, name, strlen(name));
free(tags);
}
TEST(reads_mmap_tag)
{
uint32_t mmap[] = {24, 0,
0x90ABCDEF, 0x12345678, 0x00010000, 0x00000000, 0x1, 0x0
};
void *tags = generate_taglist(2,
generate_tag(6, mmap, 32),
generate_tag(0,0,0)
);
multiboot_init(MAGIC, tags);
ASSERT_EQ_INT(kernel_boot_data.mmap_size, 1);
free(tags);
}
void setup_memory_areas()
{
uint32_t mmap[] = {24, 0,
0x90ABCDEF, 0x12345678, 0x00010000, 0x00000000, 0x1, 0x0,
0x0ABCDEF1, 0x23456789, 0x00010000, 0x00000000, 0x1, 0x0
};
void *tags = generate_taglist(2,
generate_tag(6, mmap, 56),
generate_tag(0,0,0)
);
multiboot_init(MAGIC, tags);
}
TEST(reads_multiple_mmap_tags)
{
setup_memory_areas();
ASSERT_EQ_INT(kernel_boot_data.mmap_size, 2);
}
TEST(returns_memory_area_start)
{
setup_memory_areas();
uintptr_t start, end;
uint32_t type;
multiboot_get_memory_area(0, &start, &end, &type);
ASSERT_EQ_PTR(start, 0x1234567890ABCDEF);
}
TEST(returns_memory_area_end)
{
setup_memory_areas();
uintptr_t start, end;
uint32_t type;
multiboot_get_memory_area(0, &start, &end, &type);
ASSERT_EQ_PTR(end, 0x1234567890ACCDEF);
}
TEST(returns_memory_area_type)
{
setup_memory_areas();
uintptr_t start, end;
uint32_t type;
multiboot_get_memory_area(0, &start, &end, &type);
ASSERT_EQ_INT(type, 1);
}
TEST(returns_second_memory_area_start)
{
setup_memory_areas();
uintptr_t start, end;
uint32_t type;
multiboot_get_memory_area(1, &start, &end, &type);
ASSERT_EQ_PTR(start, 0x234567890ABCDEF1);
}
TEST(does_not_return_too_many_areas)
{
setup_memory_areas();
uintptr_t start, end;
uint32_t type;
int retval = multiboot_get_memory_area(2, &start, &end, &type);
ASSERT_NEQ_INT(retval, 0);
}