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term/ns8250-spcr: Add one more 16550 debug type

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Type 0x01 was introduced with the ACPI DBGP table and type 0x12 was introduced
with the ACPI DBG2 table. Type 0x12 is used by the ACPI SPCR table on recent
AWS bare-metal instances (c6i/c7i). Also give each debug type a proper name.

Signed-off-by: Udo Steinberg <udo@hypervisor.org>
Reviewed-by: Glenn Washburn <development@efficientek.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This commit is contained in:
Udo Steinberg authored and Daniel Kiper committed 2024-06-20 14:58:29 +02:00
1 parent 8abec8e153
commit 13b315c0a5
2 files changed
+5 -3
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grub-core/term/ns8250-spcr.c
+2 -1
View File
@@ -38,7 +38,8 @@ grub_ns8250_spcr_init (void)
grub_dprintf ("serial", "SPCR table revision %d < 2, continuing anyway\n",
(int) spcr->hdr.revision);
if (spcr->intf_type != GRUB_ACPI_SPCR_INTF_TYPE_16550 &&
spcr->intf_type != GRUB_ACPI_SPCR_INTF_TYPE_16550X)
spcr->intf_type != GRUB_ACPI_SPCR_INTF_TYPE_16550_DBGP &&
spcr->intf_type != GRUB_ACPI_SPCR_INTF_TYPE_16550_DBG2)
return NULL;
/* For now, we only support byte accesses. */
if (spcr->base_addr.access_size != GRUB_ACPI_GENADDR_SIZE_BYTE &&