1 /*
2  * rbtx4939 specific prom routines
3  *
4  * This file is subject to the terms and conditions of the GNU General Public
5  * License.  See the file "COPYING" in the main directory of this archive
6  * for more details.
7  */
8 
9 #include <linux/init.h>
10 #include <linux/memblock.h>
11 #include <asm/txx9/generic.h>
12 #include <asm/txx9/rbtx4939.h>
13 
rbtx4939_prom_init(void)14 void __init rbtx4939_prom_init(void)
15 {
16 	unsigned long start, size;
17 	u64 win;
18 	int i;
19 
20 	for (i = 0; i < 4; i++) {
21 		if (!((__u32)____raw_readq(&tx4939_ddrcptr->winen) & (1 << i)))
22 			continue;
23 		win = ____raw_readq(&tx4939_ddrcptr->win[i]);
24 		start = (unsigned long)(win >> 48);
25 		size = (((unsigned long)(win >> 32) & 0xffff) + 1) - start;
26 		memblock_add(start << 20, size << 20);
27 	}
28 	txx9_sio_putchar_init(TX4939_SIO_REG(0) & 0xfffffffffULL);
29 }
30