From e663b350f1699312281ddd1439dda6b5fc86598d Mon Sep 17 00:00:00 2001 From: Alexander Graf Date: Fri, 19 Aug 2016 01:23:29 +0200 Subject: smbios: Expose in efi_loader as table We can pass SMBIOS easily as EFI configuration table to an EFI payload. This patch adds enablement for that case. While at it, we also enable SMBIOS generation for ARM systems, since they support EFI_LOADER. Signed-off-by: Alexander Graf Reviewed-by: Bin Meng Reviewed-by: Simon Glass --- lib/efi_loader/efi_smbios.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 lib/efi_loader/efi_smbios.c (limited to 'lib/efi_loader/efi_smbios.c') diff --git a/lib/efi_loader/efi_smbios.c b/lib/efi_loader/efi_smbios.c new file mode 100644 index 0000000000..ac412e7362 --- /dev/null +++ b/lib/efi_loader/efi_smbios.c @@ -0,0 +1,32 @@ +/* + * EFI application tables support + * + * Copyright (c) 2016 Alexander Graf + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include + +static const efi_guid_t smbios_guid = SMBIOS_TABLE_GUID; + +void efi_smbios_register(void) +{ + /* Map within the low 32 bits, to allow for 32bit SMBIOS tables */ + uint64_t dmi = 0xffffffff; + /* Reserve 4kb for SMBIOS */ + uint64_t pages = 1; + int memtype = EFI_RUNTIME_SERVICES_DATA; + + if (efi_allocate_pages(1, memtype, pages, &dmi) != EFI_SUCCESS) + return; + + /* Generate SMBIOS tables */ + write_smbios_table(dmi); + + /* And expose them to our EFI payload */ + efi_install_configuration_table(&smbios_guid, (void*)(uintptr_t)dmi); +} -- cgit v1.2.1