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u-boot/arch/arm/mach-uniphier/memconf.c
Simon Glass 1e94b46f73 common: Drop linux/printk.h from common header
This old patch was marked as deferred. Bring it back to life, to continue
towards the removal of common.h

Move this out of the common header and include it only where needed.

Signed-off-by: Simon Glass <sjg@chromium.org>
2023-09-24 09:54:57 -04:00

156 lines
3 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2011-2015 Panasonic Corporation
* Copyright (C) 2016 Socionext Inc.
* Author: Masahiro Yamada <yamada.masahiro@socionext.com>
*/
#include <linux/errno.h>
#include <linux/io.h>
#include <linux/printk.h>
#include <linux/sizes.h>
#include "sg-regs.h"
#include "init.h"
static int __uniphier_memconf_init(const struct uniphier_board_data *bd,
int have_ch2)
{
u32 val = 0;
unsigned long size_per_word;
/* set up ch0 */
switch (bd->dram_ch[0].width) {
case 16:
val |= SG_MEMCONF_CH0_NUM_1;
size_per_word = bd->dram_ch[0].size;
break;
case 32:
val |= 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;
}
switch (size_per_word) {
case SZ_64M:
val |= SG_MEMCONF_CH0_SZ_64M;
break;
case SZ_128M:
val |= SG_MEMCONF_CH0_SZ_128M;
break;
case SZ_256M:
val |= SG_MEMCONF_CH0_SZ_256M;
break;
case SZ_512M:
val |= SG_MEMCONF_CH0_SZ_512M;
break;
case SZ_1G:
val |= SG_MEMCONF_CH0_SZ_1G;
break;
default:
pr_err("error: unsupported DRAM ch0 size\n");
return -EINVAL;
}
/* set up ch1 */
switch (bd->dram_ch[1].width) {
case 16:
val |= SG_MEMCONF_CH1_NUM_1;
size_per_word = bd->dram_ch[1].size;
break;
case 32:
val |= 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:
val |= SG_MEMCONF_CH1_SZ_64M;
break;
case SZ_128M:
val |= SG_MEMCONF_CH1_SZ_128M;
break;
case SZ_256M:
val |= SG_MEMCONF_CH1_SZ_256M;
break;
case SZ_512M:
val |= SG_MEMCONF_CH1_SZ_512M;
break;
case SZ_1G:
val |= SG_MEMCONF_CH1_SZ_1G;
break;
default:
pr_err("error: unsupported DRAM ch1 size\n");
return -EINVAL;
}
/* is sparse mem? */
if (bd->flags & UNIPHIER_BD_DRAM_SPARSE)
val |= SG_MEMCONF_SPARSEMEM;
if (!have_ch2)
goto out;
if (!bd->dram_ch[2].size) {
val |= SG_MEMCONF_CH2_DISABLE;
goto out;
}
/* set up ch2 */
switch (bd->dram_ch[2].width) {
case 16:
val |= SG_MEMCONF_CH2_NUM_1;
size_per_word = bd->dram_ch[2].size;
break;
case 32:
val |= SG_MEMCONF_CH2_NUM_2;
size_per_word = bd->dram_ch[2].size >> 1;
break;
default:
pr_err("error: unsupported DRAM ch2 width\n");
return -EINVAL;
}
switch (size_per_word) {
case SZ_64M:
val |= SG_MEMCONF_CH2_SZ_64M;
break;
case SZ_128M:
val |= SG_MEMCONF_CH2_SZ_128M;
break;
case SZ_256M:
val |= SG_MEMCONF_CH2_SZ_256M;
break;
case SZ_512M:
val |= SG_MEMCONF_CH2_SZ_512M;
break;
case SZ_1G:
val |= SG_MEMCONF_CH2_SZ_1G;
break;
default:
pr_err("error: unsupported DRAM ch2 size\n");
return -EINVAL;
}
out:
writel(val, sg_base + SG_MEMCONF);
return 0;
}
int uniphier_memconf_2ch_init(const struct uniphier_board_data *bd)
{
return __uniphier_memconf_init(bd, 0);
}
int uniphier_memconf_3ch_init(const struct uniphier_board_data *bd)
{
return __uniphier_memconf_init(bd, 1);
}