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ARM: uniphier: hide memory top by platform hook instead of CONFIG

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I do not see a good reason to do this by a CONFIG option that affects
all SoCs.  The ram_size can be adjusted by dram_init() at run-time.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Masahiro Yamada
2018-01-06 22:59:26 +09:00
parent 3281532ab2
commit a322eb9ff6
2 changed files with 7 additions and 2 deletions
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7
arch/arm/mach-uniphier/dram_init.c
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@@ -238,6 +238,13 @@ int dram_init(void)
gd->ram_size += dram_map[i].size; gd->ram_size += dram_map[i].size;
} }
/*
* 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; return 0;
} }

2
include/configs/uniphier.h
View File

@@ -215,8 +215,6 @@
#define CONFIG_SYS_SDRAM_BASE 0x80000000 #define CONFIG_SYS_SDRAM_BASE 0x80000000
#define CONFIG_NR_DRAM_BANKS 3 #define CONFIG_NR_DRAM_BANKS 3
/* for LD20; the last 64 byte is used for dynamic DDR PHY training */
#define CONFIG_SYS_MEM_TOP_HIDE 64
#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_TEXT_BASE) #define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_TEXT_BASE)