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kboot: Print UEFI memory map

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If we can read the UEFI memory map, go ahead and print the memory map.
While the kernel prints this with bootverbose, having it at this stage
is useful for debugging other problems.

Sponsored by:		Netflix
Differential Revision:	https://reviews.freebsd.org/D44287
This commit is contained in:
Warner Losh 2024-03-11 14:15:34 -06:00
parent d650c3efb6
commit a9cd3b675e
1 changed files with 85 additions and 0 deletions
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85
stand/kboot/kboot/arch/aarch64/load_addr.c
View file

@ -23,6 +23,87 @@ uint32_t efi_map_size;
vm_paddr_t efi_map_phys_src; /* From DTB */
vm_paddr_t efi_map_phys_dst; /* From our memory map metadata module */
typedef void (*efi_map_entry_cb)(struct efi_md *, void *argp);
static void
foreach_efi_map_entry(struct efi_map_header *efihdr, efi_map_entry_cb cb, void *argp)
{
struct efi_md *map, *p;
size_t efisz;
int ndesc, i;
/*
* Memory map data provided by UEFI via the GetMemoryMap
* Boot Services API.
*/
efisz = (sizeof(struct efi_map_header) + 0xf) & ~0xf;
map = (struct efi_md *)((uint8_t *)efihdr + efisz);
if (efihdr->descriptor_size == 0)
return;
ndesc = efihdr->memory_size / efihdr->descriptor_size;
for (i = 0, p = map; i < ndesc; i++,
p = efi_next_descriptor(p, efihdr->descriptor_size)) {
cb(p, argp);
}
}
static void
print_efi_map_entry(struct efi_md *p, void *argp __unused)
{
const char *type;
static const char *types[] = {
"Reserved",
"LoaderCode",
"LoaderData",
"BootServicesCode",
"BootServicesData",
"RuntimeServicesCode",
"RuntimeServicesData",
"ConventionalMemory",
"UnusableMemory",
"ACPIReclaimMemory",
"ACPIMemoryNVS",
"MemoryMappedIO",
"MemoryMappedIOPortSpace",
"PalCode",
"PersistentMemory"
};
if (p->md_type < nitems(types))
type = types[p->md_type];
else
type = "<INVALID>";
printf("%23s %012lx %012lx %08lx ", type, p->md_phys,
p->md_virt, p->md_pages);
if (p->md_attr & EFI_MD_ATTR_UC)
printf("UC ");
if (p->md_attr & EFI_MD_ATTR_WC)
printf("WC ");
if (p->md_attr & EFI_MD_ATTR_WT)
printf("WT ");
if (p->md_attr & EFI_MD_ATTR_WB)
printf("WB ");
if (p->md_attr & EFI_MD_ATTR_UCE)
printf("UCE ");
if (p->md_attr & EFI_MD_ATTR_WP)
printf("WP ");
if (p->md_attr & EFI_MD_ATTR_RP)
printf("RP ");
if (p->md_attr & EFI_MD_ATTR_XP)
printf("XP ");
if (p->md_attr & EFI_MD_ATTR_NV)
printf("NV ");
if (p->md_attr & EFI_MD_ATTR_MORE_RELIABLE)
printf("MORE_RELIABLE ");
if (p->md_attr & EFI_MD_ATTR_RO)
printf("RO ");
if (p->md_attr & EFI_MD_ATTR_RT)
printf("RUNTIME");
printf("\n");
}
static bool
do_memory_from_fdt(int fd)
{
@ -130,6 +211,10 @@ do_memory_from_fdt(int fd)
printf("Read UEFI mem map from physmem\n");
efi_map_phys_src = 0; /* Mark MODINFOMD_EFI_MAP as valid */
close(fd2);
printf("UEFI MAP:\n");
printf("%23s %12s %12s %8s %4s\n",
"Type", "Physical", "Virtual", "#Pages", "Attr");
foreach_efi_map_entry(efihdr, print_efi_map_entry, NULL);
return true; /* OK, we really have the memory map */
no_read: