diff options
Diffstat (limited to 'src/northbridge/via/vx900/bootblock.c')
| -rw-r--r-- | src/northbridge/via/vx900/bootblock.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/src/northbridge/via/vx900/bootblock.c b/src/northbridge/via/vx900/bootblock.c new file mode 100644 index 0000000000..11123b6e11 --- /dev/null +++ b/src/northbridge/via/vx900/bootblock.c @@ -0,0 +1,46 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2017 Lubomir Rintel <lkundrak@v3.sk> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <arch/io.h> + +#if CONFIG_ROM_SIZE == 0x80000 +# define ROM_DECODE_MAP 0x00 +#elif CONFIG_ROM_SIZE == 0x100000 +# define ROM_DECODE_MAP 0x40 +#elif CONFIG_ROM_SIZE == 0x180000 +# define ROM_DECODE_MAP 0x60 +#elif CONFIG_ROM_SIZE == 0x200000 +# define ROM_DECODE_MAP 0x70 +#elif CONFIG_ROM_SIZE == 0x280000 +# define ROM_DECODE_MAP 0x78 +#elif CONFIG_ROM_SIZE == 0x300000 +# define ROM_DECODE_MAP 0x7c +#elif CONFIG_ROM_SIZE == 0x380000 +# define ROM_DECODE_MAP 0x7e +#elif CONFIG_ROM_SIZE == 0x400000 +# define ROM_DECODE_MAP 0x7f +#else +# error "Bad CONFIG_ROM_SIZE" +#endif + +static void bootblock_northbridge_init(void) +{ + u8 reg; + + pci_io_read_config8(PCI_DEV(0, 0x11, 0), 0x41); + reg |= ROM_DECODE_MAP; + pci_io_write_config8(PCI_DEV(0, 0x11, 0), 0x41, reg); +} |