diff options
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; +} |
