On Fri, Sep 08, 2017 at 08:18:25AM +0200, Gerd Hoffmann wrote:
Will be used as runtime switch to enable serial console support.
Signed-off-by: Gerd Hoffmann kraxel@redhat.com
src/fw/paravirt.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/src/fw/paravirt.c b/src/fw/paravirt.c index 5b23d786be..e9cca4fe6e 100644 --- a/src/fw/paravirt.c +++ b/src/fw/paravirt.c @@ -210,6 +210,7 @@ qemu_platform_setup(void) #define QEMU_CFG_SIGNATURE 0x00 #define QEMU_CFG_ID 0x01 #define QEMU_CFG_UUID 0x02 +#define QEMU_CFG_NOGRAPHIC 0x04 #define QEMU_CFG_NUMA 0x0d #define QEMU_CFG_BOOT_MENU 0x0e #define QEMU_CFG_NB_CPUS 0x05 @@ -510,6 +511,7 @@ qemu_cfg_legacy(void) qemu_romfile_add("etc/show-boot-menu", QEMU_CFG_BOOT_MENU, 0, 2); qemu_romfile_add("etc/irq0-override", QEMU_CFG_IRQ0_OVERRIDE, 0, 1); qemu_romfile_add("etc/max-cpus", QEMU_CFG_MAX_CPUS, 0, 2);
- qemu_romfile_add("etc/sercon-enable", QEMU_CFG_NOGRAPHIC, 0, 2);
Instead of looking at QEMU_CFG_NOGRAPHIC, I think the C code could check if GET_IVT(0x10).segoff == FUNC16(entry_10).segoff . This has the advantage of working whenever a vgarom is not installed (including on coreboot).
-Kevin