From: Zixuan Wang <zxwang42@gmail.com>
To: kvm@vger.kernel.org, pbonzini@redhat.com, drjones@redhat.com
Cc: marcorr@google.com, baekhw@google.com, tmroeder@google.com,
erdemaktas@google.com, rientjes@google.com, seanjc@google.com,
brijesh.singh@amd.com, Thomas.Lendacky@amd.com,
varad.gautam@suse.com, jroedel@suse.de, bp@suse.de
Subject: [kvm-unit-tests PATCH v3 03/17] x86 UEFI: Implement UEFI function calls
Date: Mon, 4 Oct 2021 13:49:17 -0700 [thread overview]
Message-ID: <20211004204931.1537823-4-zxwang42@gmail.com> (raw)
In-Reply-To: <20211004204931.1537823-1-zxwang42@gmail.com>
From: Varad Gautam <varad.gautam@suse.com>
This commit implements helper functions that call UEFI services and
assist the boot up process.
Signed-off-by: Varad Gautam <varad.gautam@suse.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
---
lib/efi.c | 67 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 67 insertions(+)
create mode 100644 lib/efi.c
diff --git a/lib/efi.c b/lib/efi.c
new file mode 100644
index 0000000..7f08f0e
--- /dev/null
+++ b/lib/efi.c
@@ -0,0 +1,67 @@
+/*
+ * EFI-related functions to set up and run test cases in EFI
+ *
+ * Copyright (c) 2021, SUSE, Varad Gautam <varad.gautam@suse.com>
+ *
+ * SPDX-License-Identifier: LGPL-2.0-or-later
+ */
+#include <linux/efi.h>
+
+unsigned long __efiapi efi_main(efi_handle_t handle, efi_system_table_t *sys_tab);
+efi_system_table_t *efi_system_table = NULL;
+
+static void efi_free_pool(void *ptr)
+{
+ efi_bs_call(free_pool, ptr);
+}
+
+static efi_status_t efi_get_memory_map(struct efi_boot_memmap *map)
+{
+ efi_memory_desc_t *m = NULL;
+ efi_status_t status;
+ unsigned long key = 0, map_size = 0, desc_size = 0;
+
+ status = efi_bs_call(get_memory_map, &map_size,
+ NULL, &key, &desc_size, NULL);
+ if (status != EFI_BUFFER_TOO_SMALL || map_size == 0)
+ goto out;
+
+ /*
+ * Pad map_size with additional descriptors so we don't need to
+ * retry.
+ */
+ map_size += 4 * desc_size;
+ *map->buff_size = map_size;
+ status = efi_bs_call(allocate_pool, EFI_LOADER_DATA,
+ map_size, (void **)&m);
+ if (status != EFI_SUCCESS)
+ goto out;
+
+ /* Get the map. */
+ status = efi_bs_call(get_memory_map, &map_size,
+ m, &key, &desc_size, NULL);
+ if (status != EFI_SUCCESS) {
+ efi_free_pool(m);
+ goto out;
+ }
+
+ *map->desc_size = desc_size;
+ *map->map_size = map_size;
+ *map->key_ptr = key;
+out:
+ *map->map = m;
+ return status;
+}
+
+static efi_status_t efi_exit_boot_services(void *handle,
+ struct efi_boot_memmap *map)
+{
+ return efi_bs_call(exit_boot_services, handle, *map->key_ptr);
+}
+
+unsigned long __efiapi efi_main(efi_handle_t handle, efi_system_table_t *sys_tab)
+{
+ efi_system_table = sys_tab;
+
+ return 0;
+}
--
2.33.0
next prev parent reply other threads:[~2021-10-04 20:49 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-04 20:49 [kvm-unit-tests PATCH v3 00/17] x86_64 UEFI and AMD SEV/SEV-ES support Zixuan Wang
2021-10-04 20:49 ` [kvm-unit-tests PATCH v3 01/17] x86: Move IDT, GDT and TSS to desc.c Zixuan Wang
2021-10-20 15:26 ` Paolo Bonzini
2021-10-20 17:56 ` Zixuan Wang
2021-10-21 11:50 ` Paolo Bonzini
2021-10-04 20:49 ` [kvm-unit-tests PATCH v3 02/17] x86 UEFI: Copy code from Linux Zixuan Wang
2021-10-04 20:49 ` Zixuan Wang [this message]
2021-10-04 20:49 ` [kvm-unit-tests PATCH v3 04/17] x86 UEFI: Copy code from GNU-EFI Zixuan Wang
2021-10-04 20:49 ` [kvm-unit-tests PATCH v3 05/17] x86 UEFI: Boot from UEFI Zixuan Wang
2021-10-21 12:18 ` Paolo Bonzini
2021-10-21 14:11 ` Paolo Bonzini
2021-10-04 20:49 ` [kvm-unit-tests PATCH v3 06/17] x86 UEFI: Load IDT after UEFI boot up Zixuan Wang
2021-10-04 20:49 ` [kvm-unit-tests PATCH v3 07/17] x86 UEFI: Load GDT and TSS " Zixuan Wang
2021-10-04 20:49 ` [kvm-unit-tests PATCH v3 08/17] x86 UEFI: Set up memory allocator Zixuan Wang
2021-10-04 20:49 ` [kvm-unit-tests PATCH v3 09/17] x86 UEFI: Set up RSDP after UEFI boot up Zixuan Wang
2021-10-04 20:49 ` [kvm-unit-tests PATCH v3 10/17] x86 UEFI: Set up page tables Zixuan Wang
2021-10-04 20:49 ` [kvm-unit-tests PATCH v3 11/17] x86 UEFI: Convert x86 test cases to PIC Zixuan Wang
2021-10-21 14:12 ` Paolo Bonzini
2021-10-26 6:26 ` Zixuan Wang
2021-10-04 20:49 ` [kvm-unit-tests PATCH v3 12/17] x86 AMD SEV: Initial support Zixuan Wang
2021-10-21 13:31 ` Paolo Bonzini
2021-10-04 20:49 ` [kvm-unit-tests PATCH v3 13/17] x86 AMD SEV: Page table with c-bit Zixuan Wang
2021-10-04 20:49 ` [kvm-unit-tests PATCH v3 14/17] x86 AMD SEV-ES: Check SEV-ES status Zixuan Wang
2021-10-04 20:49 ` [kvm-unit-tests PATCH v3 15/17] x86 AMD SEV-ES: Copy UEFI #VC IDT entry Zixuan Wang
2021-10-04 20:49 ` [kvm-unit-tests PATCH v3 16/17] x86 AMD SEV-ES: Set up GHCB page Zixuan Wang
2021-10-04 20:49 ` [kvm-unit-tests PATCH v3 17/17] x86 AMD SEV-ES: Add test cases Zixuan Wang
2021-10-18 11:47 ` Varad Gautam
2021-10-19 4:38 ` Zixuan Wang
2021-10-19 14:14 ` Marc Orr
2021-10-19 15:31 ` Andrew Jones
2021-10-20 17:59 ` Zixuan Wang
2021-10-19 16:44 ` Varad Gautam
2021-10-20 17:59 ` Zixuan Wang
2021-10-21 14:04 ` Paolo Bonzini
2021-10-21 14:10 ` [kvm-unit-tests PATCH v3 00/17] x86_64 UEFI and AMD SEV/SEV-ES support Paolo Bonzini
2021-10-21 14:22 ` Marc Orr
2021-10-21 14:27 ` Paolo Bonzini
2021-11-25 15:21 ` Varad Gautam
2021-11-29 14:44 ` Marc Orr
2021-11-29 15:24 ` Tom Lendacky
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