2 * Copyright (C) 2011-2014 Panasonic Corporation
3 * Copyright (C) 2015-2016 Socionext Inc.
4 * Author: Masahiro Yamada <yamada.masahiro@socionext.com>
6 * SPDX-License-Identifier: GPL-2.0+
14 #define ch(x) ((x) >= 32 ? 0 : (x) < 0 ? 0x11111111 : 0x11111111 << (x))
16 void uniphier_ld4_bcu_init(const struct uniphier_board_data *bd)
20 writel(0x44444444, BCSCR0); /* 0x20000000-0x3fffffff: ASM bus */
21 writel(0x11111111, BCSCR2); /* 0x80000000-0x9fffffff: IPPC/IPPD-bus */
22 writel(0x11111111, BCSCR3); /* 0xa0000000-0xbfffffff: IPPC/IPPD-bus */
23 writel(0x11111111, BCSCR4); /* 0xc0000000-0xdfffffff: IPPC/IPPD-bus */
24 writel(0x11111111, BCSCR5); /* 0xe0000000-0Xffffffff: IPPC/IPPD-bus */
26 /* Specify DDR channel */
27 shift = (bd->dram_ch[1].base - bd->dram_ch[0].base) / 0x04000000 * 4;
28 writel(ch(shift), BCIPPCCHR2); /* 0x80000000-0x9fffffff */
31 writel(ch(shift), BCIPPCCHR3); /* 0xa0000000-0xbfffffff */
34 writel(ch(shift), BCIPPCCHR4); /* 0xc0000000-0xdfffffff */