From: Sebastien Boeuf <sebastien.bo...@intel.com>
Following the model from the Xen target, CloudHv is generated as a PVH
ELF binary to take advantage of the PVH specification.
Signed-off-by: Sebastien Boeuf <sebastien.bo...@intel.com>
---
OvmfPkg/CloudHv/CloudHvElfHeaderGenerator.c | 150 ++++++++++++++++++++
OvmfPkg/CloudHv/CloudHvX64.dsc | 2 +-
OvmfPkg/CloudHv/CloudHvX64.fdf | 92 +++++++++++-
3 files changed, 241 insertions(+), 3 deletions(-)
create mode 100644 OvmfPkg/CloudHv/CloudHvElfHeaderGenerator.c
diff --git a/OvmfPkg/CloudHv/CloudHvElfHeaderGenerator.c
b/OvmfPkg/CloudHv/CloudHvElfHeaderGenerator.c
new file mode 100644
index 0000000000..83f4e37147
--- /dev/null
+++ b/OvmfPkg/CloudHv/CloudHvElfHeaderGenerator.c
@@ -0,0 +1,150 @@
+/** @file
+ This program generates a hex array to be manually coppied into
+ OvmfXen.fdf.
+
+ The purpose is for the flash device image to be recognize as an ELF.
+
+ Copyright (c) 2019, Citrix Systems, Inc.
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#include "elf.h"
+#include "stdio.h"
+#include "stddef.h"
+
+void
+print_hdr (
+ void *s,
+ size_t size
+ )
+{
+ char *c = s;
+
+ while (size--) {
+ printf ("0x%02hhx, ", *(c++));
+ }
+}
+
+/* Format for the XEN_ELFNOTE_PHYS32_ENTRY program segment */
+#define XEN_ELFNOTE_PHYS32_ENTRY 18
+typedef struct {
+ uint32_t name_size;
+ uint32_t desc_size;
+ uint32_t type;
+ char name[4];
+ uint32_t desc;
+} xen_elfnote_phys32_entry;
+
+int
+main (
+ void
+ )
+{
+ /* FW_SIZE */
+ size_t ovmf_blob_size = 0x00400000;
+ /* Load OVMF at 1MB when running as PVH guest */
+ uint32_t ovmf_base_address = 0x00100000;
+ /* Xen PVH entry point */
+ uint32_t ovmfxen_pvh_entry_point = ovmf_base_address + ovmf_blob_size -
0x30;
+ size_t offset_into_file = 0;
+
+ /* ELF file header */
+ Elf64_Ehdr hdr = {
+ .e_ident = ELFMAG,
+ .e_type = ET_EXEC,
+ .e_machine = EM_386,
+ .e_version = EV_CURRENT,
+ .e_entry = ovmfxen_pvh_entry_point,
+ .e_flags = R_386_NONE,
+ .e_ehsize = sizeof (hdr),
+ .e_phentsize = sizeof (Elf64_Phdr),
+ };
+
+ offset_into_file += sizeof (hdr);
+
+ hdr.e_ident[EI_CLASS] = ELFCLASS64;
+ hdr.e_ident[EI_DATA] = ELFDATA2LSB;
+ hdr.e_ident[EI_VERSION] = EV_CURRENT;
+ hdr.e_ident[EI_OSABI] = ELFOSABI_LINUX;
+ /* Placing program headers just after hdr */
+ hdr.e_phoff = sizeof (hdr);
+
+ /* program header */
+ Elf64_Phdr phdr_load = {
+ .p_type = PT_LOAD,
+ .p_offset = 0, /* load everything */
+ .p_paddr = ovmf_base_address,
+ .p_filesz = ovmf_blob_size,
+ .p_memsz = ovmf_blob_size,
+ .p_flags = PF_X | PF_W | PF_R,
+ .p_align = 4,
+ };
+
+ phdr_load.p_vaddr = phdr_load.p_paddr;
+ hdr.e_phnum += 1;
+ offset_into_file += sizeof (phdr_load);
+
+ /* Xen ELF Note. */
+
+ xen_elfnote_phys32_entry xen_elf_note = {
+ .type = XEN_ELFNOTE_PHYS32_ENTRY,
+ .name = "Xen",
+ .desc = ovmfxen_pvh_entry_point,
+ .name_size =
+ offsetof (xen_elfnote_phys32_entry, desc) -
+ offsetof (xen_elfnote_phys32_entry, name),
+ .desc_size =
+ sizeof (xen_elfnote_phys32_entry) -
+ offsetof (xen_elfnote_phys32_entry, desc),
+ };
+ Elf64_Phdr phdr_note = {
+ .p_type = PT_NOTE,
+ .p_filesz = sizeof (xen_elf_note),
+ .p_memsz = sizeof (xen_elf_note),
+ .p_flags = PF_R,
+ .p_align = 4,
+ };
+
+ hdr.e_phnum += 1;
+ offset_into_file += sizeof (phdr_note);
+ phdr_note.p_offset = offset_into_file;
+ phdr_note.p_paddr = ovmf_base_address + phdr_note.p_offset;
+ phdr_note.p_vaddr = phdr_note.p_paddr;
+
+ /*
+ * print elf header
+ */
+
+ size_t i;
+ size_t hdr_size = sizeof (hdr);
+ size_t entry_off = offsetof (typeof(hdr), e_entry);
+
+ printf ("# ELF file header\n");
+ print_hdr (&hdr, entry_off);
+ printf ("\n");
+ print_hdr (&hdr.e_entry, sizeof (hdr.e_entry));
+ printf (" # hdr.e_entry\n");
+ print_hdr (&hdr.e_entry + 1, hdr_size - entry_off - sizeof (hdr.e_entry));
+
+ printf ("\n\n# ELF Program segment headers\n");
+ printf ("# - Load segment\n");
+ for (i = 0; i < sizeof (phdr_load); i += 4) {
+ print_hdr (((char *)&phdr_load) + i, 4);
+ printf ("\n");
+ }
+
+ printf ("# - ELFNOTE segment\n");
+ for (i = 0; i < sizeof (phdr_note); i += 4) {
+ print_hdr (((char *)&phdr_note) + i, 4);
+ printf ("\n");
+ }
+
+ printf ("\n# XEN_ELFNOTE_PHYS32_ENTRY\n");
+ for (i = 0; i < sizeof (xen_elf_note); i += 4) {
+ print_hdr (((char *)&xen_elf_note) + i, 4);
+ printf ("\n");
+ }
+
+ return 0;
+}
diff --git a/OvmfPkg/CloudHv/CloudHvX64.dsc b/OvmfPkg/CloudHv/CloudHvX64.dsc
index 3172100310..b4d855d80f 100644
--- a/OvmfPkg/CloudHv/CloudHvX64.dsc
+++ b/OvmfPkg/CloudHv/CloudHvX64.dsc
@@ -631,7 +631,7 @@
#
################################################################################
[Components]
- OvmfPkg/ResetVector/ResetVector.inf
+ OvmfPkg/XenResetVector/XenResetVector.inf
#
# SEC Phase modules
diff --git a/OvmfPkg/CloudHv/CloudHvX64.fdf b/OvmfPkg/CloudHv/CloudHvX64.fdf
index ce3302c6d6..bb734d4c8d 100644
--- a/OvmfPkg/CloudHv/CloudHvX64.fdf
+++ b/OvmfPkg/CloudHv/CloudHvX64.fdf
@@ -24,7 +24,95 @@ ErasePolarity = 1
BlockSize = $(BLOCK_SIZE)
NumBlocks = $(FW_BLOCKS)
-!include OvmfPkg/VarStore.fdf.inc
+!if ($(FD_SIZE_IN_KB) == 1024) || ($(FD_SIZE_IN_KB) == 2048)
+0x00000000|0x0000e000
+!endif
+!if $(FD_SIZE_IN_KB) == 4096
+0x00000000|0x00040000
+!endif
+DATA = {
+ #
+ # This hex array have been generated by OvmfPkg/OvmfXenElfHeaderGenerator.c
+ # and copied manually.
+ #
+ # ELF file header
+ 0x7f, 0x45, 0x4c, 0x46, 0x02, 0x01, 0x01, 0x03, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x00,
+ 0xd0, 0xff, 0x4f, 0x00, 0x00, 0x00, 0x00, 0x00, # hdr.e_entry
+ 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x38, 0x00, 0x02,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+
+ # ELF Program segment headers
+ # - Load segment
+ 0x01, 0x00, 0x00, 0x00,
+ 0x07, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x10, 0x00,
+ 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x10, 0x00,
+ 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x40, 0x00,
+ 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x40, 0x00,
+ 0x00, 0x00, 0x00, 0x00,
+ 0x04, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00,
+ # - ELFNOTE segment
+ 0x04, 0x00, 0x00, 0x00,
+ 0x04, 0x00, 0x00, 0x00,
+ 0xb0, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00,
+ 0xb0, 0x00, 0x10, 0x00,
+ 0x00, 0x00, 0x00, 0x00,
+ 0xb0, 0x00, 0x10, 0x00,
+ 0x00, 0x00, 0x00, 0x00,
+ 0x14, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00,
+ 0x14, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00,
+ 0x04, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00,
+
+ # XEN_ELFNOTE_PHYS32_ENTRY
+ 0x04, 0x00, 0x00, 0x00,
+ 0x04, 0x00, 0x00, 0x00,
+ 0x12, 0x00, 0x00, 0x00,
+ 0x58, 0x65, 0x6e, 0x00,
+ 0xd0, 0xff, 0x4f, 0x00
+}
+
+!if ($(FD_SIZE_IN_KB) == 1024) || ($(FD_SIZE_IN_KB) == 2048)
+0x0000e000|0x00001000
+!endif
+!if $(FD_SIZE_IN_KB) == 4096
+0x00040000|0x00001000
+!endif
+#NV_EVENT_LOG
+
+!if ($(FD_SIZE_IN_KB) == 1024) || ($(FD_SIZE_IN_KB) == 2048)
+0x0000f000|0x00001000
+!endif
+!if $(FD_SIZE_IN_KB) == 4096
+0x00041000|0x00001000
+!endif
+#NV_FTW_WORKING
+DATA = {
+ # EFI_FAULT_TOLERANT_WORKING_BLOCK_HEADER->Signature =
gEdkiiWorkingBlockSignatureGuid =
+ # { 0x9e58292b, 0x7c68, 0x497d, { 0xa0, 0xce, 0x65, 0x0, 0xfd, 0x9f, 0x1b,
0x95 }}
+ 0x2b, 0x29, 0x58, 0x9e, 0x68, 0x7c, 0x7d, 0x49,
+ 0xa0, 0xce, 0x65, 0x0, 0xfd, 0x9f, 0x1b, 0x95,
+ # Crc:UINT32 #WorkingBlockValid:1, WorkingBlockInvalid:1, Reserved
+ 0x2c, 0xaf, 0x2c, 0x64, 0xFE, 0xFF, 0xFF, 0xFF,
+ # WriteQueueSize: UINT64
+ 0xE0, 0x0F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+}
+
+!if ($(FD_SIZE_IN_KB) == 1024) || ($(FD_SIZE_IN_KB) == 2048)
+0x00010000|0x00010000
+!endif
+!if $(FD_SIZE_IN_KB) == 4096
+0x00042000|0x00042000
+!endif
+#NV_FTW_SPARE
$(VARS_SIZE)|$(FVMAIN_SIZE)
FV = FVMAIN_COMPACT
@@ -142,7 +230,7 @@ READ_LOCK_STATUS = TRUE
#
INF OvmfPkg/Sec/SecMain.inf
-INF RuleOverride=RESET_VECTOR OvmfPkg/ResetVector/ResetVector.inf
+INF RuleOverride=RESET_VECTOR OvmfPkg/XenResetVector/XenResetVector.inf
################################################################################
[FV.PEIFV]
--
2.32.0
---------------------------------------------------------------------
Intel Corporation SAS (French simplified joint stock company)
Registered headquarters: "Les Montalets"- 2, rue de Paris,
92196 Meudon Cedex, France
Registration Number: 302 456 199 R.C.S. NANTERRE
Capital: 4,572,000 Euros
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