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| author | Tom Rini <trini@konsulko.com> | 2015-09-24 12:28:02 -0400 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2015-09-24 12:28:02 -0400 |
| commit | 7bb839d672ed3b28c7740429df4a307482868c5b (patch) | |
| tree | 0713c473994463c67c13cd80c6206886509b98d6 /arch/arm/mach-uniphier/bcu/bcu-ph1-ld4.c | |
| parent | ce50916ca1415da2f44931d93397d36ac0d208a2 (diff) | |
| parent | a4bb44b027705f8c05fc525180cabaa3769247bb (diff) | |
Merge branch 'master' of git://git.denx.de/u-boot-uniphier
Diffstat (limited to 'arch/arm/mach-uniphier/bcu/bcu-ph1-ld4.c')
| -rw-r--r-- | arch/arm/mach-uniphier/bcu/bcu-ph1-ld4.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/arm/mach-uniphier/bcu/bcu-ph1-ld4.c b/arch/arm/mach-uniphier/bcu/bcu-ph1-ld4.c new file mode 100644 index 0000000000..e9d3761fde --- /dev/null +++ b/arch/arm/mach-uniphier/bcu/bcu-ph1-ld4.c @@ -0,0 +1,34 @@ +/* + * Copyright (C) 2011-2015 Masahiro Yamada <yamada.masahiro@socionext.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <linux/io.h> +#include <mach/bcu-regs.h> +#include <mach/init.h> + +#define ch(x) ((x) >= 32 ? 0 : (x) < 0 ? 0x11111111 : 0x11111111 << (x)) + +int ph1_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_ch1_base - bd->dram_ch0_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; +} |