u-boot/arch/arm/mach-uniphier/bcu/bcu-ph1-sld3.c
Masahiro Yamada 46abfcc99e ARM: uniphier: rework struct uniphier_board_data
This commit reworks "struct uniphier_board_data" with an array of
DRAM channel data in it.  It will allow further cleanups by means of
"for" statements that iterate over the DDR channels.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-02-29 03:50:16 +09:00

39 lines
1,020 B
C

/*
* 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 ph1_sld3_bcu_init(const struct uniphier_board_data *bd)
{
int shift;
writel(0x11111111, BCSCR2); /* 0x80000000-0x9fffffff: IPPC/IPPD-bus */
writel(0x11111111, BCSCR3); /* 0xa0000000-0xbfffffff: IPPC/IPPD-bus */
writel(0x11111111, BCSCR4); /* 0xc0000000-0xdfffffff: IPPC/IPPD-bus */
/*
* 0xe0000000-0xefffffff: Ex-bus
* 0xf0000000-0xfbffffff: ASM bus
* 0xfc000000-0xffffffff: OCM bus
*/
writel(0x24440000, BCSCR5);
/* 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;
}