From 323d1f9d5bebfe55e97e23c8094055685665afef Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Tue, 22 Sep 2015 00:27:39 +0900 Subject: ARM: uniphier: allow to enable multiple SoCs Before this commit, the Kconfig menu in mach-uniphier only allowed us to choose one SoC to be compiled. Each SoC has its own defconfig file for the build-test coverage. Consequently, some defconfig files are duplicated with only the difference in CONFIG_DEFAULT_DEVICE_TREE and CONFIG_{SOC_NAME}=y. Now, most of board-specific parameters have been moved to device trees, so it makes sense to include init code of multiple SoCs into a single image as long as the SoCs have similar architecture. In fact, some SoCs of UniPhier family are very similar: - PH1-LD4 and PH1-sLD8 - PH1-LD6b and ProXstream2 (will be added in the upcoming commit) This commit will be helpful to merge some defconfig files for better maintainability. Signed-off-by: Masahiro Yamada --- arch/arm/mach-uniphier/bcu/Makefile | 3 +++ arch/arm/mach-uniphier/bcu/bcu-ph1-ld4.c | 34 +++++++++++++++++++++++++++ arch/arm/mach-uniphier/bcu/bcu-ph1-sld3.c | 38 +++++++++++++++++++++++++++++++ 3 files changed, 75 insertions(+) create mode 100644 arch/arm/mach-uniphier/bcu/Makefile create mode 100644 arch/arm/mach-uniphier/bcu/bcu-ph1-ld4.c create mode 100644 arch/arm/mach-uniphier/bcu/bcu-ph1-sld3.c (limited to 'arch/arm/mach-uniphier/bcu') diff --git a/arch/arm/mach-uniphier/bcu/Makefile b/arch/arm/mach-uniphier/bcu/Makefile new file mode 100644 index 0000000000..5b95bdad95 --- /dev/null +++ b/arch/arm/mach-uniphier/bcu/Makefile @@ -0,0 +1,3 @@ +obj-$(CONFIG_ARCH_UNIPHIER_PH1_SLD3) += bcu-ph1-sld3.o +obj-$(CONFIG_ARCH_UNIPHIER_PH1_LD4) += bcu-ph1-ld4.o +obj-$(CONFIG_ARCH_UNIPHIER_PH1_SLD8) += bcu-ph1-ld4.o 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 + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include + +#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; +} diff --git a/arch/arm/mach-uniphier/bcu/bcu-ph1-sld3.c b/arch/arm/mach-uniphier/bcu/bcu-ph1-sld3.c new file mode 100644 index 0000000000..cb6f862721 --- /dev/null +++ b/arch/arm/mach-uniphier/bcu/bcu-ph1-sld3.c @@ -0,0 +1,38 @@ +/* + * Copyright (C) 2011-2015 Masahiro Yamada + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include + +#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_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; +} -- cgit v1.2.1