| /* |
| * Copyright (C) 2011-2015 Panasonic Corporation |
| * Copyright (C) 2016 Socionext Inc. |
| * Author: 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 "../init.h" |
| #include "../sg-regs.h" |
| |
| int memconf_init(const struct uniphier_board_data *bd) |
| { |
| u32 tmp; |
| unsigned long size_per_word; |
| |
| tmp = readl(SG_MEMCONF); |
| |
| tmp &= ~(SG_MEMCONF_CH0_SZ_MASK | SG_MEMCONF_CH0_NUM_MASK); |
| |
| switch (bd->dram_ch[0].width) { |
| case 16: |
| tmp |= SG_MEMCONF_CH0_NUM_1; |
| size_per_word = bd->dram_ch[0].size; |
| break; |
| case 32: |
| tmp |= SG_MEMCONF_CH0_NUM_2; |
| size_per_word = bd->dram_ch[0].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_ch[1].width) { |
| case 16: |
| tmp |= SG_MEMCONF_CH1_NUM_1; |
| size_per_word = bd->dram_ch[1].size; |
| break; |
| case 32: |
| tmp |= SG_MEMCONF_CH1_NUM_2; |
| size_per_word = bd->dram_ch[1].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_ch[0].base + bd->dram_ch[0].size < bd->dram_ch[1].base) |
| tmp |= SG_MEMCONF_SPARSEMEM; |
| else |
| tmp &= ~SG_MEMCONF_SPARSEMEM; |
| |
| writel(tmp, SG_MEMCONF); |
| |
| return 0; |
| } |