1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (C) 2011-2014 Panasonic Corporation 4 * Copyright (C) 2015-2016 Socionext Inc. 5 * Author: Masahiro Yamada <yamada.masahiro@socionext.com> 6 */ 7 8 #include <linux/io.h> 9 10 #include "../init.h" 11 #include "bcu-regs.h" 12 13 #define ch(x) ((x) >= 32 ? 0 : (x) < 0 ? 0x11111111 : 0x11111111 << (x)) 14 uniphier_ld4_bcu_init(const struct uniphier_board_data * bd)15void uniphier_ld4_bcu_init(const struct uniphier_board_data *bd) 16 { 17 int shift; 18 19 writel(0x44444444, BCSCR0); /* 0x20000000-0x3fffffff: ASM bus */ 20 writel(0x11111111, BCSCR2); /* 0x80000000-0x9fffffff: IPPC/IPPD-bus */ 21 writel(0x11111111, BCSCR3); /* 0xa0000000-0xbfffffff: IPPC/IPPD-bus */ 22 writel(0x11111111, BCSCR4); /* 0xc0000000-0xdfffffff: IPPC/IPPD-bus */ 23 writel(0x11111111, BCSCR5); /* 0xe0000000-0Xffffffff: IPPC/IPPD-bus */ 24 25 /* Specify DDR channel */ 26 shift = bd->dram_ch[0].size / 0x04000000 * 4; 27 writel(ch(shift), BCIPPCCHR2); /* 0x80000000-0x9fffffff */ 28 29 shift -= 32; 30 writel(ch(shift), BCIPPCCHR3); /* 0xa0000000-0xbfffffff */ 31 32 shift -= 32; 33 writel(ch(shift), BCIPPCCHR4); /* 0xc0000000-0xdfffffff */ 34 } 35