initial hasty attempt at porting over my VBE code

[bootcensus] / src / vbe.h

diff --git a/src/vbe.h b/src/vbe.h
new file mode 100644 (file)
index 0000000..15fb101
--- /dev/null
+++ b/src/vbe.h
@@ -0,0 +1,65 @@
+#ifndef VBE_H_
+#define VBE_H_
+
+#include <inttypes.h>
+
+#define VBE_ATTR_LFB   (1 << 7)
+#define VBE_MODE_LFB   (1 << 14)
+
+struct vbe_info {
+       uint8_t sig[4];
+       uint16_t version;
+       uint32_t oem_str_ptr;
+       uint8_t caps[4];                        /* capabilities */
+       uint32_t vid_mode_ptr;          /* vbefarptr to video mode list */
+       uint16_t total_mem;                     /* num of 64k mem blocks */
+       uint16_t oem_sw_rev;            /* VBE implementation software revision */
+       uint32_t oem_vendor_name_ptr;
+       uint32_t oem_product_name_ptr;
+       uint32_t oem_product_rev_ptr;
+       uint8_t reserved[222];
+       uint8_t oem_data[256];
+} __attribute__((packed));
+
+struct vbe_mode_info {
+       uint16_t mode_attr;
+       uint8_t wina_attr, winb_attr;
+       uint16_t win_gran, win_size;
+       uint16_t wina_seg, winb_seg;
+       uint32_t win_func;
+       uint16_t scanline_bytes;
+
+       /* VBE 1.2 and above */
+       uint16_t xres, yres;
+       uint8_t xcharsz, ycharsz;
+       uint8_t num_planes;
+       uint8_t bpp;
+       uint8_t num_banks;
+       uint8_t mem_model;
+       uint8_t bank_size;              /* bank size in KB */
+       uint8_t num_img_pages;
+       uint8_t reserved1;
+
+       /* direct color fields */
+       uint8_t rmask_size, rpos;
+       uint8_t gmask_size, gpos;
+       uint8_t bmask_size, bpos;
+       uint8_t xmask_size, xpos;
+       uint8_t cmode_info;             /* direct color mode attributes */
+
+       /* VBE 2.0 and above */
+       uint32_t fb_addr;               /* physical address of the linear framebuffer */
+       uint32_t reserved2;
+       uint16_t reserved3;
+
+       uint8_t reserved4[206];
+} __attribute__((packed));
+
+struct vbe_info *vbe_get_info(void);
+struct vbe_mode_info *vbe_get_mode_info(int mode);
+
+int vbe_set_mode(int mode);
+
+void print_mode_info(struct vbe_mode_info *modei);
+
+#endif /* VBE_H_ */