/*
* Copyright (C) 2012-2015 Panasonic Corporation
- * Author: Masahiro Yamada <yamada.m@jp.panasonic.com>
+ * Copyright (C) 2015-2017 Socionext Inc.
+ * Author: Masahiro Yamada <yamada.masahiro@socionext.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
+#include <fdtdec.h>
+#include <linux/errno.h>
+#include <linux/sizes.h>
+
+#include "init.h"
+#include "sg-regs.h"
+#include "soc-info.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+struct uniphier_memif_data {
+ unsigned int soc_id;
+ unsigned long sparse_ch1_base;
+ int have_ch2;
+};
+
+static const struct uniphier_memif_data uniphier_memif_data[] = {
+ {
+ .soc_id = UNIPHIER_SLD3_ID,
+ .sparse_ch1_base = 0xc0000000,
+ /*
+ * In fact, SLD3 has DRAM ch2, but the memory regions for ch1
+ * and ch2 overlap, and host cannot get access to them at the
+ * same time. Hide the ch2 from U-Boot.
+ */
+ },
+ {
+ .soc_id = UNIPHIER_LD4_ID,
+ .sparse_ch1_base = 0xc0000000,
+ },
+ {
+ .soc_id = UNIPHIER_PRO4_ID,
+ .sparse_ch1_base = 0xa0000000,
+ },
+ {
+ .soc_id = UNIPHIER_SLD8_ID,
+ .sparse_ch1_base = 0xc0000000,
+ },
+ {
+ .soc_id = UNIPHIER_PRO5_ID,
+ .sparse_ch1_base = 0xc0000000,
+ },
+ {
+ .soc_id = UNIPHIER_PXS2_ID,
+ .sparse_ch1_base = 0xc0000000,
+ .have_ch2 = 1,
+ },
+ {
+ .soc_id = UNIPHIER_LD6B_ID,
+ .sparse_ch1_base = 0xc0000000,
+ .have_ch2 = 1,
+ },
+ {
+ .soc_id = UNIPHIER_LD11_ID,
+ .sparse_ch1_base = 0xc0000000,
+ },
+ {
+ .soc_id = UNIPHIER_LD20_ID,
+ .sparse_ch1_base = 0xc0000000,
+ .have_ch2 = 1,
+ },
+ {
+ .soc_id = UNIPHIER_PXS3_ID,
+ .sparse_ch1_base = 0xc0000000,
+ .have_ch2 = 1,
+ },
+};
+UNIPHIER_DEFINE_SOCDATA_FUNC(uniphier_get_memif_data, uniphier_memif_data)
+
+static int uniphier_memconf_decode(struct uniphier_dram_ch *dram_ch)
+{
+ const struct uniphier_memif_data *data;
+ unsigned long size;
+ u32 val;
+
+ data = uniphier_get_memif_data();
+ if (!data) {
+ pr_err("unsupported SoC\n");
+ return -EINVAL;
+ }
+
+ val = readl(SG_MEMCONF);
+
+ /* set up ch0 */
+ dram_ch[0].base = CONFIG_SYS_SDRAM_BASE;
+
+ switch (val & SG_MEMCONF_CH0_SZ_MASK) {
+ case SG_MEMCONF_CH0_SZ_64M:
+ size = SZ_64M;
+ break;
+ case SG_MEMCONF_CH0_SZ_128M:
+ size = SZ_128M;
+ break;
+ case SG_MEMCONF_CH0_SZ_256M:
+ size = SZ_256M;
+ break;
+ case SG_MEMCONF_CH0_SZ_512M:
+ size = SZ_512M;
+ break;
+ case SG_MEMCONF_CH0_SZ_1G:
+ size = SZ_1G;
+ break;
+ default:
+ pr_err("error: invald value is set to MEMCONF ch0 size\n");
+ return -EINVAL;
+ }
+
+ if ((val & SG_MEMCONF_CH0_NUM_MASK) == SG_MEMCONF_CH0_NUM_2)
+ size *= 2;
+
+ dram_ch[0].size = size;
+
+ /* set up ch1 */
+ dram_ch[1].base = dram_ch[0].base + size;
+
+ if (val & SG_MEMCONF_SPARSEMEM) {
+ if (dram_ch[1].base > data->sparse_ch1_base) {
+ pr_warn("Sparse mem is enabled, but ch0 and ch1 overlap\n");
+ pr_warn("Only ch0 is available\n");
+ dram_ch[1].base = 0;
+ return 0;
+ }
+
+ dram_ch[1].base = data->sparse_ch1_base;
+ }
+
+ switch (val & SG_MEMCONF_CH1_SZ_MASK) {
+ case SG_MEMCONF_CH1_SZ_64M:
+ size = SZ_64M;
+ break;
+ case SG_MEMCONF_CH1_SZ_128M:
+ size = SZ_128M;
+ break;
+ case SG_MEMCONF_CH1_SZ_256M:
+ size = SZ_256M;
+ break;
+ case SG_MEMCONF_CH1_SZ_512M:
+ size = SZ_512M;
+ break;
+ case SG_MEMCONF_CH1_SZ_1G:
+ size = SZ_1G;
+ break;
+ default:
+ pr_err("error: invald value is set to MEMCONF ch1 size\n");
+ return -EINVAL;
+ }
+
+ if ((val & SG_MEMCONF_CH1_NUM_MASK) == SG_MEMCONF_CH1_NUM_2)
+ size *= 2;
+
+ dram_ch[1].size = size;
+
+ if (!data->have_ch2)
+ return 0;
+
+ /* set up ch2 */
+ dram_ch[2].base = dram_ch[1].base + size;
+
+ switch (val & SG_MEMCONF_CH2_SZ_MASK) {
+ case SG_MEMCONF_CH2_SZ_64M:
+ size = SZ_64M;
+ break;
+ case SG_MEMCONF_CH2_SZ_128M:
+ size = SZ_128M;
+ break;
+ case SG_MEMCONF_CH2_SZ_256M:
+ size = SZ_256M;
+ break;
+ case SG_MEMCONF_CH2_SZ_512M:
+ size = SZ_512M;
+ break;
+ case SG_MEMCONF_CH2_SZ_1G:
+ size = SZ_1G;
+ break;
+ default:
+ pr_err("error: invald value is set to MEMCONF ch2 size\n");
+ return -EINVAL;
+ }
+
+ if ((val & SG_MEMCONF_CH2_NUM_MASK) == SG_MEMCONF_CH2_NUM_2)
+ size *= 2;
+
+ dram_ch[2].size = size;
+
+ return 0;
+}
int dram_init(void)
{
- DECLARE_GLOBAL_DATA_PTR;
- gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
+ struct uniphier_dram_ch dram_ch[UNIPHIER_MAX_NR_DRAM_CH] = {};
+ int ret, i;
+
+ gd->ram_size = 0;
+
+ ret = uniphier_memconf_decode(dram_ch);
+ if (ret)
+ return ret;
+
+ for (i = 0; i < ARRAY_SIZE(dram_ch); i++) {
+
+ if (!dram_ch[i].size)
+ break;
+
+ /*
+ * U-Boot relocates itself to the tail of the memory region,
+ * but it does not expect sparse memory. We use the first
+ * contiguous chunk here.
+ */
+ if (i > 0 &&
+ dram_ch[i - 1].base + dram_ch[i - 1].size < dram_ch[i].base)
+ break;
+
+ gd->ram_size += dram_ch[i].size;
+ }
+
+ return 0;
+}
+
+void dram_init_banksize(void)
+{
+ struct uniphier_dram_ch dram_ch[UNIPHIER_MAX_NR_DRAM_CH] = {};
+ int i;
+
+ uniphier_memconf_decode(dram_ch);
+
+ for (i = 0; i < ARRAY_SIZE(dram_ch); i++) {
+ if (i >= ARRAY_SIZE(gd->bd->bi_dram))
+ break;
+
+ gd->bd->bi_dram[i].start = dram_ch[i].base;
+ gd->bd->bi_dram[i].size = dram_ch[i].size;
+ }
+}
+
+#ifdef CONFIG_OF_BOARD_SETUP
+/*
+ * The DRAM PHY requires 64 byte scratch area in each DRAM channel
+ * for its dynamic PHY training feature.
+ */
+int ft_board_setup(void *fdt, bd_t *bd)
+{
+ unsigned long rsv_addr;
+ const unsigned long rsv_size = 64;
+ int i, ret;
+
+ if (uniphier_get_soc_id() != UNIPHIER_LD20_ID)
+ return 0;
+
+ for (i = 0; i < ARRAY_SIZE(gd->bd->bi_dram); i++) {
+ rsv_addr = gd->bd->bi_dram[i].start + gd->bd->bi_dram[i].size;
+ rsv_addr -= rsv_size;
+
+ ret = fdt_add_mem_rsv(fdt, rsv_addr, rsv_size);
+ if (ret)
+ return -ENOSPC;
+
+ printf(" Reserved memory region for DRAM PHY training: addr=%lx size=%lx\n",
+ rsv_addr, rsv_size);
+ }
return 0;
}
+#endif
projects / oweals / u-boot.git / blobdiff