File 0010-hvmloader-Load-SeaBIOS-from-hvm_start_info... of Package xen.22546

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File 0010-hvmloader-Load-SeaBIOS-from-hvm_start_info-modules.patch of Package xen.22546

From df9fdafcfc38c931181dae1de3e6a9eee28829d4 Mon Sep 17 00:00:00 2001
From: Anthony PERARD <anthony.perard@citrix.com>
Date: Mon, 14 Mar 2016 17:55:45 +0000
Subject: [PATCH 10/15] hvmloader: Load SeaBIOS from hvm_start_info modules

... and do not include the SeaBIOS ROM into hvmloader anymore.

This also fix the dependency on roms.inc, hvmloader.o does not include it.

Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
---
 tools/firmware/hvmloader/Makefile  | 15 +--------------
 tools/firmware/hvmloader/seabios.c | 24 ++++++++++++++----------
 2 files changed, 15 insertions(+), 24 deletions(-)

Index: xen-4.7.0-testing/tools/firmware/hvmloader/Makefile
===================================================================
--- xen-4.7.0-testing.orig/tools/firmware/hvmloader/Makefile
+++ xen-4.7.0-testing/tools/firmware/hvmloader/Makefile
@@ -45,7 +45,6 @@ CIRRUSVGA_DEBUG ?= n
 
 OVMF_DIR := ../ovmf-dir
 ROMBIOS_DIR := ../rombios
-SEABIOS_DIR := ../seabios-dir
 
 ifeq ($(CONFIG_ROMBIOS),y)
 STDVGA_ROM    := ../vgabios/VGABIOS-lgpl-latest.bin
@@ -80,19 +79,13 @@ endif
 ifeq ($(CONFIG_SEABIOS),y)
 OBJS += seabios.o
 CFLAGS += -DENABLE_SEABIOS
-ifeq ($(SEABIOS_PATH),)
-	SEABIOS_ROM := $(SEABIOS_DIR)/out/bios.bin
-else
-	SEABIOS_ROM := $(SEABIOS_PATH)
-endif
-ROMS += $(SEABIOS_ROM)
 endif
 
 .PHONY: all
 all: subdirs-all
 	$(MAKE) hvmloader
 
-ovmf.o rombios.o seabios.o hvmloader.o: roms.inc
+ovmf.o rombios.o: roms.inc
 smbios.o: CFLAGS += -D__SMBIOS_DATE__="\"$(SMBIOS_REL_DATE)\""
 
 hvmloader: $(OBJS) acpi/acpi.a
@@ -109,12 +102,6 @@ ifneq ($(ROMBIOS_ROM),)
 	echo "#endif" >> $@.new
 endif
 
-ifneq ($(SEABIOS_ROM),)
-	echo "#ifdef ROM_INCLUDE_SEABIOS" >> $@.new
-	sh ./mkhex seabios $(SEABIOS_ROM) >> $@.new
-	echo "#endif" >> $@.new
-endif
-
 ifneq ($(OVMF_ROM),)
 	echo "#ifdef ROM_INCLUDE_OVMF" >> $@.new
 	sh ./mkhex ovmf $(OVMF_ROM) >> $@.new
Index: xen-4.7.0-testing/tools/firmware/hvmloader/seabios.c
===================================================================
--- xen-4.7.0-testing.orig/tools/firmware/hvmloader/seabios.c
+++ xen-4.7.0-testing/tools/firmware/hvmloader/seabios.c
@@ -27,9 +27,6 @@
 #include "smbios_types.h"
 #include "acpi/acpi2_0.h"
 
-#define ROM_INCLUDE_SEABIOS
-#include "roms.inc"
-
 extern unsigned char dsdt_anycpu_qemu_xen[];
 extern int dsdt_anycpu_qemu_xen_len;
 
@@ -127,22 +124,29 @@ static void seabios_setup_e820(void)
     struct e820entry *e820 = scratch_alloc(sizeof(struct e820entry)*16, 0);
     info->e820 = (uint32_t)e820;
 
+    BUG_ON(seabios_config.bios_address < 0xc0000 || seabios_config.bios_address >= 0x100000);
     /* SeaBIOS reserves memory in e820 as necessary so no low reservation. */
-    info->e820_nr = build_e820_table(e820, 0, 0x100000-sizeof(seabios));
+    info->e820_nr = build_e820_table(e820, 0, seabios_config.bios_address);
     dump_e820_table(e820, info->e820_nr);
 }
 
-struct bios_config seabios_config = {
-    .name = "SeaBIOS",
+static void seabios_load(const struct bios_config *bios,
+                         void *bios_addr, uint32_t bios_length)
+{
+    unsigned int bios_dest = 0x100000 - bios_length;
 
-    .image = seabios,
-    .image_size = sizeof(seabios),
+    BUG_ON(bios_dest + bios_length > HVMLOADER_PHYSICAL_ADDRESS);
+    memcpy((void *)bios_dest, bios_addr, bios_length);
+    seabios_config.bios_address = bios_dest;
+    seabios_config.image_size = bios_length;
+}
 
-    .bios_address = 0x100000 - sizeof(seabios),
+struct bios_config seabios_config = {
+    .name = "SeaBIOS",
 
     .load_roms = NULL,
 
-    .bios_load = NULL,
+    .bios_load = seabios_load,
 
     .bios_info_setup = seabios_setup_bios_info,
     .bios_info_finish = seabios_finish_bios_info,

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File 0010-hvmloader-Load-SeaBIOS-from-hvm_start_info-modules.patch of Package xen.22546

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