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author | Tom Rini <trini@konsulko.com> | 2015-03-01 21:07:53 -0500 |
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committer | Tom Rini <trini@konsulko.com> | 2015-03-01 21:07:53 -0500 |
commit | 1da7ce4155d0839d9d56525379493bb0f80b5330 (patch) | |
tree | a29a93170e68b30d1a5b73a8210ddb92b5aaa3c7 /arch/arm/mach-uniphier/ph1-ld4/bcu_init.c | |
parent | fc834100950ab630f442aece500d8c9ccfa2b992 (diff) | |
parent | 105a9e705efaeeac63e795e2a184b0a18db0ac5a (diff) |
Merge branch 'master' of git://git.denx.de/u-boot-uniphier
Diffstat (limited to 'arch/arm/mach-uniphier/ph1-ld4/bcu_init.c')
-rw-r--r-- | arch/arm/mach-uniphier/ph1-ld4/bcu_init.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/arm/mach-uniphier/ph1-ld4/bcu_init.c b/arch/arm/mach-uniphier/ph1-ld4/bcu_init.c new file mode 100644 index 00000000000..837e0d1fcc2 --- /dev/null +++ b/arch/arm/mach-uniphier/ph1-ld4/bcu_init.c @@ -0,0 +1,33 @@ +/* + * Copyright (C) 2011-2014 Panasonic Corporation + * Author: Masahiro Yamada <yamada.m@jp.panasonic.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <mach/bcu-regs.h> + +#define ch(x) ((x) >= 32 ? 0 : (x) < 0 ? 0x11111111 : 0x11111111 << (x)) + +void bcu_init(void) +{ + 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 = (CONFIG_SDRAM1_BASE - CONFIG_SDRAM0_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 */ +} |