diff --git a/hw/pc.c b/hw/pc.c index a40e1d03f26ccaf28165d328580fdfadd54f7226..4e2be253174c86b52bf9ef8a622d6cb023c297da 100644 --- a/hw/pc.c +++ b/hw/pc.c @@ -217,6 +217,9 @@ static uint32_t ioport92_read(void *opaque, uint32_t addr) void bochs_bios_write(void *opaque, uint32_t addr, uint32_t val) { + static const char shutdown_str[8] = "Shutdown"; + static int shutdown_index = 0; + switch(addr) { /* Bochs BIOS messages */ case 0x400: @@ -229,6 +232,18 @@ void bochs_bios_write(void *opaque, uint32_t addr, uint32_t val) fprintf(stderr, "%c", val); #endif break; + case 0x8900: + /* same as Bochs power off */ + if (val == shutdown_str[shutdown_index]) { + shutdown_index++; + if (shutdown_index == 8) { + shutdown_index = 0; + qemu_system_shutdown_request(); + } + } else { + shutdown_index = 0; + } + break; /* LGPL'ed VGA BIOS messages */ case 0x501: @@ -250,6 +265,7 @@ void bochs_bios_init(void) 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, 2, bochs_bios_write, NULL); register_ioport_write(0x502, 1, 2, bochs_bios_write, NULL);