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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>
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2 changed files with 3 additions and 1 deletions
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@ -326,12 +326,13 @@ PC_MASK: .long 0x20000000
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/* step 26 */
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wait_DBCMD
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#if defined(CONFIG_SH7757LCR_DDR_ECC)
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/* enable DDR-ECC */
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write32 ECD_ECDEN_A, ECD_ECDEN_D
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write32 ECD_INTSR_A, ECD_INTSR_D
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write32 ECD_SPACER_A, ECD_SPACER_D
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write32 ECD_MCR_A, ECD_MCR_D
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#endif
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bra exit_ddr
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nop
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@ -31,6 +31,7 @@
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#define CONFIG_SH_32BIT 1
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#define CONFIG_CPU_SH7757 1
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#define CONFIG_SH7757LCR 1
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#define CONFIG_SH7757LCR_DDR_ECC 1
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#define CONFIG_SYS_TEXT_BASE 0x8ef80000
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#define CONFIG_SYS_LDSCRIPT "board/renesas/sh7757lcr/u-boot.lds"
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