Device tree specifies the available memory ranges in its "/memory" node. Use it to simplify the CONFIG defines.
Signed-off-by: Masahiro Yamada yamada.masahiro@socionext.com ---
Changes in v2: None
arch/arm/mach-uniphier/board_common.c | 12 --------- arch/arm/mach-uniphier/dram_init.c | 51 ++++++++++++++++++++++++++++++++--- include/configs/uniphier.h | 11 +------- 3 files changed, 48 insertions(+), 26 deletions(-)
diff --git a/arch/arm/mach-uniphier/board_common.c b/arch/arm/mach-uniphier/board_common.c index 5f2d5f6..967fa6c 100644 --- a/arch/arm/mach-uniphier/board_common.c +++ b/arch/arm/mach-uniphier/board_common.c @@ -18,15 +18,3 @@ int board_init(void)
return 0; } - -#if CONFIG_NR_DRAM_BANKS >= 2 -void dram_init_banksize(void) -{ - DECLARE_GLOBAL_DATA_PTR; - - gd->bd->bi_dram[0].start = CONFIG_SDRAM0_BASE; - gd->bd->bi_dram[0].size = CONFIG_SDRAM0_SIZE; - gd->bd->bi_dram[1].start = CONFIG_SDRAM1_BASE; - gd->bd->bi_dram[1].size = CONFIG_SDRAM1_SIZE; -} -#endif diff --git a/arch/arm/mach-uniphier/dram_init.c b/arch/arm/mach-uniphier/dram_init.c index 4b8c938..32cc448 100644 --- a/arch/arm/mach-uniphier/dram_init.c +++ b/arch/arm/mach-uniphier/dram_init.c @@ -1,16 +1,59 @@ /* - * Copyright (C) 2012-2015 Panasonic Corporation - * Author: Masahiro Yamada yamada.m@jp.panasonic.com + * Copyright (C) 2012-2015 Masahiro Yamada yamada.masahiro@socionext.com * * SPDX-License-Identifier: GPL-2.0+ */
#include <common.h> +#include <libfdt.h> +#include <linux/err.h> + +DECLARE_GLOBAL_DATA_PTR; + +static const void *get_memory_reg_prop(const void *fdt, int *lenp) +{ + int offset; + + offset = fdt_path_offset(fdt, "/memory"); + if (offset < 0) + return NULL; + + return fdt_getprop(fdt, offset, "reg", lenp); +}
int dram_init(void) { - DECLARE_GLOBAL_DATA_PTR; - gd->ram_size = CONFIG_SYS_SDRAM_SIZE; + const fdt32_t *val; + int len; + + val = get_memory_reg_prop(gd->fdt_blob, &len); + if (len < sizeof(*val)) + return -EINVAL; + + gd->ram_size = fdt32_to_cpu(*(val + 1)); + + debug("DRAM size = %08lx\n", gd->ram_size);
return 0; } + +void dram_init_banksize(void) +{ + const fdt32_t *val; + int len, i; + + val = get_memory_reg_prop(gd->fdt_blob, &len); + if (len < 0) + return; + + len /= sizeof(*val); + len /= 2; + + for (i = 0; i < len; i++) { + gd->bd->bi_dram[i].start = fdt32_to_cpu(*val++); + gd->bd->bi_dram[i].size = fdt32_to_cpu(*val++); + + debug("DRAM bank %d: start = %08lx, size = %08lx\n", + i, gd->bd->bi_dram[i].start, gd->bd->bi_dram[i].size); + } +} diff --git a/include/configs/uniphier.h b/include/configs/uniphier.h index 45b39c0..a15838b 100644 --- a/include/configs/uniphier.h +++ b/include/configs/uniphier.h @@ -295,17 +295,8 @@ /* Open Firmware flat tree */ #define CONFIG_OF_LIBFDT
-/* Memory Size & Mapping */ -#define CONFIG_SYS_SDRAM_BASE CONFIG_SDRAM0_BASE - -#if CONFIG_SDRAM0_BASE + CONFIG_SDRAM0_SIZE >= CONFIG_SDRAM1_BASE -/* Thre is no memory hole */ -#define CONFIG_NR_DRAM_BANKS 1 -#define CONFIG_SYS_SDRAM_SIZE (CONFIG_SDRAM0_SIZE + CONFIG_SDRAM1_SIZE) -#else +#define CONFIG_SYS_SDRAM_BASE 0x80000000 #define CONFIG_NR_DRAM_BANKS 2 -#define CONFIG_SYS_SDRAM_SIZE (CONFIG_SDRAM0_SIZE) -#endif
#if defined(CONFIG_MACH_PH1_SLD3) || defined(CONFIG_MACH_PH1_LD4) || \ defined(CONFIG_MACH_PH1_SLD8)