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author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2015-09-22 00:27:39 +0900 |
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committer | Masahiro Yamada <yamada.masahiro@socionext.com> | 2015-09-25 00:58:38 +0900 |
commit | 323d1f9d5bebfe55e97e23c8094055685665afef (patch) | |
tree | 4fe6b5ffd3aab68a945de9750d145514271d2321 /arch/arm/mach-uniphier/memconf | |
parent | 5451b777de392043c03626f6cbbc3940c49c3417 (diff) | |
download | talos-obmc-uboot-323d1f9d5bebfe55e97e23c8094055685665afef.tar.gz talos-obmc-uboot-323d1f9d5bebfe55e97e23c8094055685665afef.zip |
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 <yamada.masahiro@socionext.com>
Diffstat (limited to 'arch/arm/mach-uniphier/memconf')
-rw-r--r-- | arch/arm/mach-uniphier/memconf/Makefile | 2 | ||||
-rw-r--r-- | arch/arm/mach-uniphier/memconf/memconf-ph1-sld3.c | 59 | ||||
-rw-r--r-- | arch/arm/mach-uniphier/memconf/memconf.c | 104 |
3 files changed, 165 insertions, 0 deletions
diff --git a/arch/arm/mach-uniphier/memconf/Makefile b/arch/arm/mach-uniphier/memconf/Makefile new file mode 100644 index 0000000000..1a718f31fa --- /dev/null +++ b/arch/arm/mach-uniphier/memconf/Makefile @@ -0,0 +1,2 @@ +obj-y += memconf.o +obj-$(CONFIG_ARCH_UNIPHIER_PH1_SLD3) += memconf-ph1-sld3.o diff --git a/arch/arm/mach-uniphier/memconf/memconf-ph1-sld3.c b/arch/arm/mach-uniphier/memconf/memconf-ph1-sld3.c new file mode 100644 index 0000000000..e13f56d1dc --- /dev/null +++ b/arch/arm/mach-uniphier/memconf/memconf-ph1-sld3.c @@ -0,0 +1,59 @@ +/* + * Copyright (C) 2015 Masahiro Yamada <yamada.masahiro@socionext.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <linux/err.h> +#include <linux/io.h> +#include <linux/sizes.h> +#include <mach/init.h> +#include <mach/sg-regs.h> + +int ph1_sld3_memconf_init(const struct uniphier_board_data *bd) +{ + u32 tmp; + unsigned long size_per_word; + + tmp = readl(SG_MEMCONF); + + tmp &= ~(SG_MEMCONF_CH2_SZ_MASK | SG_MEMCONF_CH2_NUM_MASK); + + switch (bd->dram_ch2_width) { + case 16: + tmp |= SG_MEMCONF_CH2_NUM_1; + size_per_word = bd->dram_ch2_size; + break; + case 32: + tmp |= SG_MEMCONF_CH2_NUM_2; + size_per_word = bd->dram_ch2_size >> 1; + break; + default: + pr_err("error: unsupported DRAM Ch2 width\n"); + return -EINVAL; + } + + /* Set DDR size */ + switch (size_per_word) { + case SZ_64M: + tmp |= SG_MEMCONF_CH2_SZ_64M; + break; + case SZ_128M: + tmp |= SG_MEMCONF_CH2_SZ_128M; + break; + case SZ_256M: + tmp |= SG_MEMCONF_CH2_SZ_256M; + break; + case SZ_512M: + tmp |= SG_MEMCONF_CH2_SZ_512M; + break; + default: + pr_err("error: unsupported DRAM Ch2 size\n"); + return -EINVAL; + } + + writel(tmp, SG_MEMCONF); + + return 0; +} diff --git a/arch/arm/mach-uniphier/memconf/memconf.c b/arch/arm/mach-uniphier/memconf/memconf.c new file mode 100644 index 0000000000..d490736fa4 --- /dev/null +++ b/arch/arm/mach-uniphier/memconf/memconf.c @@ -0,0 +1,104 @@ +/* + * Copyright (C) 2011-2015 Masahiro Yamada <yamada.masahiro@socionext.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <linux/err.h> +#include <linux/io.h> +#include <linux/sizes.h> +#include <mach/init.h> +#include <mach/sg-regs.h> + +int memconf_init(const struct uniphier_board_data *bd) +{ + u32 tmp = 0; + unsigned long size_per_word; + + tmp = readl(SG_MEMCONF); + + tmp &= ~(SG_MEMCONF_CH0_SZ_MASK | SG_MEMCONF_CH0_NUM_MASK); + + switch (bd->dram_ch0_width) { + case 16: + tmp |= SG_MEMCONF_CH0_NUM_1; + size_per_word = bd->dram_ch0_size; + break; + case 32: + tmp |= SG_MEMCONF_CH0_NUM_2; + size_per_word = bd->dram_ch0_size >> 1; + break; + default: + pr_err("error: unsupported DRAM Ch0 width\n"); + return -EINVAL; + } + + /* Set DDR size */ + switch (size_per_word) { + case SZ_64M: + tmp |= SG_MEMCONF_CH0_SZ_64M; + break; + case SZ_128M: + tmp |= SG_MEMCONF_CH0_SZ_128M; + break; + case SZ_256M: + tmp |= SG_MEMCONF_CH0_SZ_256M; + break; + case SZ_512M: + tmp |= SG_MEMCONF_CH0_SZ_512M; + break; + case SZ_1G: + tmp |= SG_MEMCONF_CH0_SZ_1G; + break; + default: + pr_err("error: unsupported DRAM Ch0 size\n"); + return -EINVAL; + } + + tmp &= ~(SG_MEMCONF_CH1_SZ_MASK | SG_MEMCONF_CH1_NUM_MASK); + + switch (bd->dram_ch1_width) { + case 16: + tmp |= SG_MEMCONF_CH1_NUM_1; + size_per_word = bd->dram_ch1_size; + break; + case 32: + tmp |= SG_MEMCONF_CH1_NUM_2; + size_per_word = bd->dram_ch1_size >> 1; + break; + default: + pr_err("error: unsupported DRAM Ch1 width\n"); + return -EINVAL; + } + + switch (size_per_word) { + case SZ_64M: + tmp |= SG_MEMCONF_CH1_SZ_64M; + break; + case SZ_128M: + tmp |= SG_MEMCONF_CH1_SZ_128M; + break; + case SZ_256M: + tmp |= SG_MEMCONF_CH1_SZ_256M; + break; + case SZ_512M: + tmp |= SG_MEMCONF_CH1_SZ_512M; + break; + case SZ_1G: + tmp |= SG_MEMCONF_CH1_SZ_1G; + break; + default: + pr_err("error: unsupported DRAM Ch1 size\n"); + return -EINVAL; + } + + if (bd->dram_ch0_base + bd->dram_ch0_size < bd->dram_ch1_base) + tmp |= SG_MEMCONF_SPARSEMEM; + else + tmp &= ~SG_MEMCONF_SPARSEMEM; + + writel(tmp, SG_MEMCONF); + + return 0; +} |