+// SPDX-License-Identifier: GPL-2.0+
/*
- * Copyright (C) 2012-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
+ * Copyright (C) 2012-2015 Panasonic Corporation
+ * Copyright (C) 2015-2017 Socionext Inc.
+ * Author: Masahiro Yamada <yamada.masahiro@socionext.com>
*/
-#include <common.h>
-#include <libfdt.h>
-#include <fdtdec.h>
-#include <linux/err.h>
+#include <init.h>
+#include <linux/errno.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/printk.h>
+#include <linux/sizes.h>
+#include <asm/global_data.h>
+#include <asm/u-boot.h>
+
+#include "init.h"
+#include "sg-regs.h"
+#include "soc-info.h"
DECLARE_GLOBAL_DATA_PTR;
-static const void *get_memory_reg_prop(const void *fdt, int *lenp)
+struct uniphier_dram_map {
+ unsigned long base;
+ unsigned long size;
+};
+
+static int uniphier_memconf_decode(struct uniphier_dram_map *dram_map,
+ unsigned long sparse_ch1_base, bool have_ch2)
{
- int offset;
+ unsigned long size;
+ u32 val;
- offset = fdt_path_offset(fdt, "/memory");
- if (offset < 0)
- return NULL;
+ val = readl(sg_base + SG_MEMCONF);
- return fdt_getprop(fdt, offset, "reg", lenp);
-}
+ /* set up ch0 */
+ dram_map[0].base = 0x80000000;
-int dram_init(void)
-{
- const void *fdt = gd->fdt_blob;
- const fdt32_t *val;
- int ac, sc, len;
-
- ac = fdt_address_cells(fdt, 0);
- sc = fdt_size_cells(fdt, 0);
- if (ac < 0 || sc < 1 || sc > 2) {
- printf("invalid address/size cells\n");
+ 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: invalid value is set to MEMCONF ch0 size\n");
return -EINVAL;
}
- val = get_memory_reg_prop(fdt, &len);
- if (len / sizeof(*val) < ac + sc)
+ if ((val & SG_MEMCONF_CH0_NUM_MASK) == SG_MEMCONF_CH0_NUM_2)
+ size *= 2;
+
+ dram_map[0].size = size;
+
+ /* set up ch1 */
+ dram_map[1].base = dram_map[0].base + size;
+
+ if (val & SG_MEMCONF_SPARSEMEM) {
+ if (dram_map[1].base > sparse_ch1_base) {
+ pr_warn("Sparse mem is enabled, but ch0 and ch1 overlap\n");
+ pr_warn("Only ch0 is available\n");
+ dram_map[1].base = 0;
+ return 0;
+ }
+
+ dram_map[1].base = 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: invalid value is set to MEMCONF ch1 size\n");
return -EINVAL;
+ }
- val += ac;
+ if ((val & SG_MEMCONF_CH1_NUM_MASK) == SG_MEMCONF_CH1_NUM_2)
+ size *= 2;
- gd->ram_size = fdtdec_get_number(val, sc);
+ dram_map[1].size = size;
- debug("DRAM size = %08lx\n", (unsigned long)gd->ram_size);
+ if (!have_ch2 || val & SG_MEMCONF_CH2_DISABLE)
+ return 0;
+
+ /* set up ch2 */
+ dram_map[2].base = dram_map[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: invalid 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_map[2].size = size;
return 0;
}
-void dram_init_banksize(void)
+static int uniphier_ld4_dram_map_get(struct uniphier_dram_map dram_map[])
+{
+ return uniphier_memconf_decode(dram_map, 0xc0000000, false);
+}
+
+static int uniphier_pro4_dram_map_get(struct uniphier_dram_map dram_map[])
+{
+ return uniphier_memconf_decode(dram_map, 0xa0000000, false);
+}
+
+static int uniphier_pxs2_dram_map_get(struct uniphier_dram_map dram_map[])
+{
+ return uniphier_memconf_decode(dram_map, 0xc0000000, true);
+}
+
+struct uniphier_dram_init_data {
+ unsigned int soc_id;
+ int (*dram_map_get)(struct uniphier_dram_map dram_map[]);
+};
+
+static const struct uniphier_dram_init_data uniphier_dram_init_data[] = {
+ {
+ .soc_id = UNIPHIER_LD4_ID,
+ .dram_map_get = uniphier_ld4_dram_map_get,
+ },
+ {
+ .soc_id = UNIPHIER_PRO4_ID,
+ .dram_map_get = uniphier_pro4_dram_map_get,
+ },
+ {
+ .soc_id = UNIPHIER_SLD8_ID,
+ .dram_map_get = uniphier_ld4_dram_map_get,
+ },
+ {
+ .soc_id = UNIPHIER_PRO5_ID,
+ .dram_map_get = uniphier_ld4_dram_map_get,
+ },
+ {
+ .soc_id = UNIPHIER_PXS2_ID,
+ .dram_map_get = uniphier_pxs2_dram_map_get,
+ },
+ {
+ .soc_id = UNIPHIER_LD6B_ID,
+ .dram_map_get = uniphier_pxs2_dram_map_get,
+ },
+ {
+ .soc_id = UNIPHIER_LD11_ID,
+ .dram_map_get = uniphier_ld4_dram_map_get,
+ },
+ {
+ .soc_id = UNIPHIER_LD20_ID,
+ .dram_map_get = uniphier_pxs2_dram_map_get,
+ },
+ {
+ .soc_id = UNIPHIER_PXS3_ID,
+ .dram_map_get = uniphier_pxs2_dram_map_get,
+ },
+};
+UNIPHIER_DEFINE_SOCDATA_FUNC(uniphier_get_dram_init_data,
+ uniphier_dram_init_data)
+
+static int uniphier_dram_map_get(struct uniphier_dram_map *dram_map)
{
- const void *fdt = gd->fdt_blob;
- const fdt32_t *val;
- int ac, sc, cells, len, i;
-
- val = get_memory_reg_prop(fdt, &len);
- if (len < 0)
- return;
-
- ac = fdt_address_cells(fdt, 0);
- sc = fdt_size_cells(fdt, 0);
- if (ac < 1 || sc > 2 || sc < 1 || sc > 2) {
- printf("invalid address/size cells\n");
- return;
+ const struct uniphier_dram_init_data *data;
+
+ data = uniphier_get_dram_init_data();
+ if (!data) {
+ pr_err("unsupported SoC\n");
+ return -ENOTSUPP;
+ }
+
+ return data->dram_map_get(dram_map);
+}
+
+int dram_init(void)
+{
+ struct uniphier_dram_map dram_map[3] = {};
+ bool valid_bank_found = false;
+ unsigned long prev_top;
+ int ret, i;
+
+ gd->ram_size = 0;
+
+ ret = uniphier_dram_map_get(dram_map);
+ if (ret)
+ return ret;
+
+ for (i = 0; i < ARRAY_SIZE(dram_map); i++) {
+ unsigned long max_size;
+
+ if (!dram_map[i].size)
+ continue;
+
+ /*
+ * 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 (valid_bank_found && prev_top < dram_map[i].base)
+ break;
+
+ /*
+ * Do not use memory that exceeds 32bit address range. U-Boot
+ * relocates itself to the end of the effectively available RAM.
+ * This could be a problem for DMA engines that do not support
+ * 64bit address (SDMA of SDHCI, UniPhier AV-ether, etc.)
+ */
+ if (dram_map[i].base >= 1ULL << 32)
+ break;
+
+ max_size = (1ULL << 32) - dram_map[i].base;
+
+ gd->ram_size = min(dram_map[i].size, max_size);
+
+ if (!valid_bank_found)
+ gd->ram_base = dram_map[i].base;
+
+ prev_top = dram_map[i].base + dram_map[i].size;
+ valid_bank_found = true;
}
- cells = ac + sc;
+ /*
+ * LD20 uses the last 64 byte for each channel for dynamic
+ * DDR PHY training
+ */
+ if (uniphier_get_soc_id() == UNIPHIER_LD20_ID)
+ gd->ram_size -= 64;
+
+ return 0;
+}
+
+int dram_init_banksize(void)
+{
+ struct uniphier_dram_map dram_map[3] = {};
+ unsigned long base, top;
+ bool valid_bank_found = false;
+ int ret, i;
+
+ ret = uniphier_dram_map_get(dram_map);
+ if (ret)
+ return ret;
- len /= sizeof(*val);
+ for (i = 0; i < ARRAY_SIZE(dram_map); i++) {
+ if (i < ARRAY_SIZE(gd->bd->bi_dram)) {
+ gd->bd->bi_dram[i].start = dram_map[i].base;
+ gd->bd->bi_dram[i].size = dram_map[i].size;
+ }
- for (i = 0; i < CONFIG_NR_DRAM_BANKS && len >= cells;
- i++, len -= cells) {
- gd->bd->bi_dram[i].start = fdtdec_get_number(val, ac);
- val += ac;
- gd->bd->bi_dram[i].size = fdtdec_get_number(val, sc);
- val += sc;
+ if (!dram_map[i].size)
+ continue;
- debug("DRAM bank %d: start = %08lx, size = %08lx\n",
- i, (unsigned long)gd->bd->bi_dram[i].start,
- (unsigned long)gd->bd->bi_dram[i].size);
+ if (!valid_bank_found)
+ base = dram_map[i].base;
+ top = dram_map[i].base + dram_map[i].size;
+ valid_bank_found = true;
}
+
+ if (!valid_bank_found)
+ return -EINVAL;
+
+ /* map all the DRAM regions */
+ uniphier_mem_map_init(base, top - base);
+
+ return 0;
}
projects / oweals / u-boot.git / blobdiff