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/*
* Copyright (C) 2011-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <linux/io.h>
#include "../init.h"
#include "bcu-regs.h"
#define ch(x) ((x) >= 32 ? 0 : (x) < 0 ? 0x11111111 : 0x11111111 << (x))
int uniphier_ld4_bcu_init(const struct uniphier_board_data *bd)
{
int shift;
writel(0x44444444, BCSCR0); /* 0x20000000-0x3fffffff: ASM bus */
writel(0x11111111, BCSCR2); /* 0x80000000-0x9fffffff: IPPC/IPPD-bus */
writel(0x11111111, BCSCR3); /* 0xa0000000-0xbfffffff: IPPC/IPPD-bus */
writel(0x11111111, BCSCR4); /* 0xc0000000-0xdfffffff: IPPC/IPPD-bus */
writel(0x11111111, BCSCR5); /* 0xe0000000-0Xffffffff: IPPC/IPPD-bus */
/* Specify DDR channel */
shift = (bd->dram_ch[1].base - bd->dram_ch[0].base) / 0x04000000 * 4;
writel(ch(shift), BCIPPCCHR2); /* 0x80000000-0x9fffffff */
shift -= 32;
writel(ch(shift), BCIPPCCHR3); /* 0xa0000000-0xbfffffff */
shift -= 32;
writel(ch(shift), BCIPPCCHR4); /* 0xc0000000-0xdfffffff */
return 0;
}
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