#define RADEON_CONFIG_APER_SIZE 0x0108
#define RADEON_CONFIG_BONDS 0x00e8
#define RADEON_CONFIG_CNTL 0x00e0
+# define RADEON_CFG_VGA_RAM_EN (1 << 8)
+# define RADEON_CFG_VGA_IO_DIS (1 << 9)
# define RADEON_CFG_ATI_REV_A11 (0 << 16)
# define RADEON_CFG_ATI_REV_A12 (1 << 16)
# define RADEON_CFG_ATI_REV_A13 (2 << 16)