#include <palacios/vmm_emulator.h>
#include <palacios/vm_guest_mem.h>
-#include <devices/cga.h>
+#include <devices/console.h>
+
-/*
#ifndef DEBUG_CGA
#undef PrintDebug
#define PrintDebug(fmt, args...)
#endif
-*/
+
#define START_ADDR 0xB8000
#define END_ADDR 0xC0000
struct video_internal * state = (struct video_internal *)dev->private_data;
uint_t fb_offset = guest_addr - START_ADDR;
uint_t screen_byte_offset = state->screen_offset * BYTES_PER_COL;
+ uint_t screen_length;
PrintDebug("Guest address: %p length = %d, fb_offset=%d, screen_offset=%d\n",
(void *)guest_addr, length, fb_offset, screen_byte_offset);
if (state->ops) {
PrintDebug("\tcalling update_screen()\n");
- state->ops->update_screen(x, y, length, state->private_data);
+
+ /* avoid updates past end of screen */
+ screen_length = SCREEN_SIZE - screen_byte_offset;
+ if (screen_length > length) screen_length = length;
+ state->ops->update_screen(x, y, screen_length, state->private_data);
}
}
.stop = NULL,
};
-static int cga_init(struct guest_info * vm, void * cfg_data) {
+static int cga_init(struct guest_info * vm, v3_cfg_tree_t * cfg) {
struct video_internal * video_state = (struct video_internal *)V3_Malloc(sizeof(struct video_internal));
addr_t frame_buf_pa = 0;
- uint32_t enable_passthrough = (uint32_t)(addr_t)cfg_data;
+ int enable_passthrough = 0;
+ char * name = v3_cfg_val(cfg, "name");
+ enable_passthrough = (strcasecmp(v3_cfg_val(cfg, "passthrough"), "enable") == 0) ? 1 : 0;
PrintDebug("video: init_device\n");
- struct vm_device * dev = v3_allocate_device("CGA_VIDEO", &dev_ops, video_state);
+ struct vm_device * dev = v3_allocate_device(name, &dev_ops, video_state);
if (v3_attach_device(vm, dev) == -1) {
- PrintError("Could not attach device %s\n", "CGA_VIDEO");
+ PrintError("Could not attach device %s\n", name);
return -1;
}