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authorNobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>2011-10-31 13:16:02 +0900
committerNobuhiro Iwamatsu <iwamatsu@nigauri.org>2011-12-02 13:46:21 +0900
commit3ed81645874413d31c5012cb958abd3bc5008b0c (patch)
tree6cb9c8d57c9459bfc7f53e94f571059df3b2e93f
parentcb4046c592b7e1a0b3412bea8de21ec16a5e9e95 (diff)
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sh: Add a flag which controls the DDR ECC mode of sh7757lcr
When DDR-ECC is effective, the physical memory which can be used reduces this boardby half. However, this mode can chenge to disable. When it was disabled, user can use 512 MB of physical memory. Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> CC: "Yoshihiro Shimoda" <yoshihiro.shimoda.uh@renesas.com> Acked-by: "Yoshihiro Shimoda" <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
-rw-r--r--board/renesas/sh7757lcr/lowlevel_init.S3
-rw-r--r--include/configs/sh7757lcr.h1
2 files changed, 3 insertions, 1 deletions
diff --git a/board/renesas/sh7757lcr/lowlevel_init.S b/board/renesas/sh7757lcr/lowlevel_init.S
index ab1aa49..5090fd0 100644
--- a/board/renesas/sh7757lcr/lowlevel_init.S
+++ b/board/renesas/sh7757lcr/lowlevel_init.S
@@ -326,12 +326,13 @@ PC_MASK: .long 0x20000000
/* step 26 */
wait_DBCMD
+#if defined(CONFIG_SH7757LCR_DDR_ECC)
/* enable DDR-ECC */
write32 ECD_ECDEN_A, ECD_ECDEN_D
write32 ECD_INTSR_A, ECD_INTSR_D
write32 ECD_SPACER_A, ECD_SPACER_D
write32 ECD_MCR_A, ECD_MCR_D
-
+#endif
bra exit_ddr
nop
diff --git a/include/configs/sh7757lcr.h b/include/configs/sh7757lcr.h
index fe11a17..c1f9ce8 100644
--- a/include/configs/sh7757lcr.h
+++ b/include/configs/sh7757lcr.h
@@ -31,6 +31,7 @@
#define CONFIG_SH_32BIT 1
#define CONFIG_CPU_SH7757 1
#define CONFIG_SH7757LCR 1
+#define CONFIG_SH7757LCR_DDR_ECC 1
#define CONFIG_SYS_TEXT_BASE 0x8ef80000
#define CONFIG_SYS_LDSCRIPT "board/renesas/sh7757lcr/u-boot.lds"