diff options
Diffstat (limited to 'arch/mips/txx9/rbtx4939/prom.c')
| -rw-r--r-- | arch/mips/txx9/rbtx4939/prom.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/mips/txx9/rbtx4939/prom.c b/arch/mips/txx9/rbtx4939/prom.c new file mode 100644 index 000000000..ba25ba1bd --- /dev/null +++ b/arch/mips/txx9/rbtx4939/prom.c @@ -0,0 +1,29 @@ +/* + * rbtx4939 specific prom routines + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ + +#include <linux/init.h> +#include <linux/memblock.h> +#include <asm/txx9/generic.h> +#include <asm/txx9/rbtx4939.h> + +void __init rbtx4939_prom_init(void) +{ + unsigned long start, size; + u64 win; + int i; + + for (i = 0; i < 4; i++) { + if (!((__u32)____raw_readq(&tx4939_ddrcptr->winen) & (1 << i))) + continue; + win = ____raw_readq(&tx4939_ddrcptr->win[i]); + start = (unsigned long)(win >> 48); + size = (((unsigned long)(win >> 32) & 0xffff) + 1) - start; + memblock_add(start << 20, size << 20); + } + txx9_sio_putchar_init(TX4939_SIO_REG(0) & 0xfffffffffULL); +} |