From: John Floren <john@jfloren.net>
Date: Mon, 23 May 2011 12:15:15 +0000 (+0300)
Subject: kvm tools: Add video mode to kernel initialization
X-Git-Tag: next-20110824~3^2~267
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=382cb2872449d7382287d08f19c09bd476003793;p=karo-tx-linux.git

kvm tools: Add video mode to kernel initialization

Allow setting video mode in guest kernel.

For possible values see Documentation/fb/vesafb.txt

Signed-off-by: John Floren <john@jfloren.net>
[ turning code into patches and cleanup ]
Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
---

diff --git a/tools/kvm/include/kvm/kvm.h b/tools/kvm/include/kvm/kvm.h
index 08c6fdac11fb..f951f2d56230 100644
--- a/tools/kvm/include/kvm/kvm.h
+++ b/tools/kvm/include/kvm/kvm.h
@@ -41,7 +41,7 @@ int kvm__max_cpus(struct kvm *kvm);
 void kvm__init_ram(struct kvm *kvm);
 void kvm__delete(struct kvm *kvm);
 bool kvm__load_kernel(struct kvm *kvm, const char *kernel_filename,
-			const char *initrd_filename, const char *kernel_cmdline);
+			const char *initrd_filename, const char *kernel_cmdline, u16 vidmode);
 void kvm__setup_bios(struct kvm *kvm);
 void kvm__start_timer(struct kvm *kvm);
 void kvm__stop_timer(struct kvm *kvm);
diff --git a/tools/kvm/kvm.c b/tools/kvm/kvm.c
index 4393a41999fd..728421168f4d 100644
--- a/tools/kvm/kvm.c
+++ b/tools/kvm/kvm.c
@@ -320,7 +320,7 @@ static int load_flat_binary(struct kvm *kvm, int fd)
 static const char *BZIMAGE_MAGIC	= "HdrS";
 
 static bool load_bzimage(struct kvm *kvm, int fd_kernel,
-			int fd_initrd, const char *kernel_cmdline)
+			int fd_initrd, const char *kernel_cmdline, u16 vidmode)
 {
 	struct boot_params *kern_boot;
 	unsigned long setup_sects;
@@ -383,6 +383,7 @@ static bool load_bzimage(struct kvm *kvm, int fd_kernel,
 	kern_boot->hdr.type_of_loader	= 0xff;
 	kern_boot->hdr.heap_end_ptr	= 0xfe00;
 	kern_boot->hdr.loadflags	|= CAN_USE_HEAP;
+	kern_boot->hdr.vid_mode		= vidmode;
 
 	/*
 	 * Read initrd image into guest memory
@@ -441,7 +442,7 @@ static bool initrd_check(int fd)
 }
 
 bool kvm__load_kernel(struct kvm *kvm, const char *kernel_filename,
-		const char *initrd_filename, const char *kernel_cmdline)
+		const char *initrd_filename, const char *kernel_cmdline, u16 vidmode)
 {
 	bool ret;
 	int fd_kernel = -1, fd_initrd = -1;
@@ -459,7 +460,7 @@ bool kvm__load_kernel(struct kvm *kvm, const char *kernel_filename,
 			die("%s is not an initrd", initrd_filename);
 	}
 
-	ret = load_bzimage(kvm, fd_kernel, fd_initrd, kernel_cmdline);
+	ret = load_bzimage(kvm, fd_kernel, fd_initrd, kernel_cmdline, vidmode);
 
 	if (initrd_filename)
 		close(fd_initrd);