X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=arch%2Farm%2Fmach-uniphier%2Fdram_init.c;h=881062d9b697e6e371d537cfeeed189a9e736ff8;hb=576a085c1d224b8a5a3ccf5c4114d07a1f695f20;hp=815f2433f38287eeb7b42d97178743780cf8e9eb;hpb=814013253fd4cf932d0fb32f7043f09a2a748d9a;p=oweals%2Fu-boot.git diff --git a/arch/arm/mach-uniphier/dram_init.c b/arch/arm/mach-uniphier/dram_init.c index 815f2433f3..881062d9b6 100644 --- a/arch/arm/mach-uniphier/dram_init.c +++ b/arch/arm/mach-uniphier/dram_init.c @@ -1,85 +1,272 @@ /* - * Copyright (C) 2012-2015 Masahiro Yamada + * Copyright (C) 2012-2015 Panasonic Corporation + * Copyright (C) 2015-2017 Socionext Inc. + * Author: Masahiro Yamada * * SPDX-License-Identifier: GPL-2.0+ */ #include -#include -#include +#include +#include +#include + +#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_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) { - int offset; + const struct uniphier_memif_data *data; + unsigned long size; + u32 val; - offset = fdt_path_offset(fdt, "/memory"); - if (offset < 0) - return NULL; + data = uniphier_get_memif_data(); + if (!data) { + pr_err("unsupported SoC\n"); + return -EINVAL; + } - return fdt_getprop(fdt, offset, "reg", lenp); -} + val = readl(SG_MEMCONF); -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"); + /* 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; } - 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_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; - val += ac; + dram_ch[1].size = size; - gd->ram_size = sc == 2 ? fdt64_to_cpu(*(fdt64_t *)val) : - fdt32_to_cpu(*val); + if (!data->have_ch2) + return 0; - debug("DRAM size = %08lx\n", (unsigned long)gd->ram_size); + /* 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) +{ + 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) { - 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; + 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; } +} - cells = ac + sc; +#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; - len /= sizeof(*val); + 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; - for (i = 0; i < CONFIG_NR_DRAM_BANKS && len >= cells; - i++, len -= cells) { - gd->bd->bi_dram[i].start = ac == 2 ? - fdt64_to_cpu(*(fdt64_t *)val) : fdt32_to_cpu(*val); - val += ac; - gd->bd->bi_dram[i].size = sc == 2 ? - fdt64_to_cpu(*(fdt64_t *)val) : fdt32_to_cpu(*val); - val += sc; + ret = fdt_add_mem_rsv(fdt, rsv_addr, rsv_size); + if (ret) + return -ENOSPC; - 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); + printf(" Reserved memory region for DRAM PHY training: addr=%lx size=%lx\n", + rsv_addr, rsv_size); } + + return 0; } +#endif