Debug output ports (enabled by DEBUG_BIOS define) can be replaced by: -chardev stdio,id=debugcon,mux=on -device isa-debugcon,iobase=0x402,chardev=debugcon -device isa-debugcon,iobase=0x403,chardev=debugcon -device isa-debugcon,iobase=0x500,chardev=debugcon -device isa-debugcon,iobase=0x503,chardev=debugcon
QEMU exit (which can be guest trigged) can be replaced by: -device isa-debugexit,iobase=0x501 -device isa-debugexit,iobase=0x501,access-size=2 -device isa-debugexit,iobase=0x502,access-size=2 Signed-off-by: Hervé Poussineau <hpous...@reactos.org> --- Anthony, this patch is a follow-up of a patch I sent in March 2012: http://lists.gnu.org/archive/html/qemu-devel/2012-03/msg00031.html Will you accept this approach, where your regression suite will require a new parameter "-device isa-debugexit,iobase=0x501" ? hw/pc.c | 35 ----------------------------------- 1 file changed, 35 deletions(-) diff --git a/hw/pc.c b/hw/pc.c index c7e9ab3..a328fb2 100644 --- a/hw/pc.c +++ b/hw/pc.c @@ -49,9 +49,6 @@ #include "exec-memory.h" #include "arch_init.h" -/* output Bochs bios info messages */ -//#define DEBUG_BIOS - /* debug PC/ISA interrupts */ //#define DEBUG_IRQ @@ -540,17 +537,6 @@ static void bochs_bios_write(void *opaque, uint32_t addr, uint32_t val) static int shutdown_index = 0; switch(addr) { - /* Bochs BIOS messages */ - case 0x400: - case 0x401: - /* used to be panic, now unused */ - break; - case 0x402: - case 0x403: -#ifdef DEBUG_BIOS - fprintf(stderr, "%c", val); -#endif - break; case 0x8900: /* same as Bochs power off */ if (val == shutdown_str[shutdown_index]) { @@ -563,17 +549,6 @@ static void bochs_bios_write(void *opaque, uint32_t addr, uint32_t val) shutdown_index = 0; } break; - - /* LGPL'ed VGA BIOS messages */ - case 0x501: - case 0x502: - exit((val << 1) | 1); - case 0x500: - case 0x503: -#ifdef DEBUG_BIOS - fprintf(stderr, "%c", val); -#endif - break; } } @@ -602,18 +577,8 @@ static void *bochs_bios_init(void) uint64_t *numa_fw_cfg; int i, j; - register_ioport_write(0x400, 1, 2, bochs_bios_write, NULL); - register_ioport_write(0x401, 1, 2, bochs_bios_write, NULL); - register_ioport_write(0x402, 1, 1, bochs_bios_write, NULL); - register_ioport_write(0x403, 1, 1, bochs_bios_write, NULL); register_ioport_write(0x8900, 1, 1, bochs_bios_write, NULL); - register_ioport_write(0x501, 1, 1, bochs_bios_write, NULL); - register_ioport_write(0x501, 1, 2, bochs_bios_write, NULL); - register_ioport_write(0x502, 1, 2, bochs_bios_write, NULL); - register_ioport_write(0x500, 1, 1, bochs_bios_write, NULL); - register_ioport_write(0x503, 1, 1, bochs_bios_write, NULL); - fw_cfg = fw_cfg_init(BIOS_CFG_IOPORT, BIOS_CFG_IOPORT + 1, 0, 0); fw_cfg_add_i32(fw_cfg, FW_CFG_ID, 1); -- 1.7.10
