This patch depends on Nobuhiro Iwamatsu's arm: rmobile: Add supoprt for KMC KZM-A9-GT board Tetsuyuki Kobayashi's arm: rmobile: kzm9g: Modify sdram area
Adjust hardware setting in lowlevel_init.S. After this patch U-boot can boot Linux kernel (without DTB) on KZM-A9-GT board successfully.
Signed-off-by: Tetsuyuki Kobayashi koba@kmckk.co.jp --- arch/arm/include/asm/arch-rmobile/sh73a0.h | 1 + board/kmc/kzm/lowlevel_init.S | 3 +++ 2 files changed, 4 insertions(+)
diff --git a/arch/arm/include/asm/arch-rmobile/sh73a0.h b/arch/arm/include/asm/arch-rmobile/sh73a0.h index 07824ab..bb66d20 100644 --- a/arch/arm/include/asm/arch-rmobile/sh73a0.h +++ b/arch/arm/include/asm/arch-rmobile/sh73a0.h @@ -191,6 +191,7 @@ #define SMSTPCR3 (CPG_BASE + 0x013C) #define SMSTPCR4 (CPG_BASE + 0x0140) #define SMSTPCR5 (CPG_BASE + 0x0144) +#define CPGXXCR4 (CPG_BASE + 0x0150) #define SRCR0 (CPG_BASE + 0x80A0) #define SRCR1 (CPG_BASE + 0x80A8) #define SRCR2 (CPG_BASE + 0x80B0) diff --git a/board/kmc/kzm/lowlevel_init.S b/board/kmc/kzm/lowlevel_init.S index 5221611..be3d203 100644 --- a/board/kmc/kzm/lowlevel_init.S +++ b/board/kmc/kzm/lowlevel_init.S @@ -111,6 +111,7 @@ loop0:
and_write32 LIFEC_SEC_SRC, 0xFFFFFFE7
+ and_write32 SMSTPCR3,0xFFFF7FFF and_write32 SRCR3, 0xFFFF7FFF and_write32 SMSTPCR2,0xFFFBFFFF and_write32 SRCR2, 0xFFFBFFFF @@ -302,6 +303,8 @@ loop0: write32 FRQCRD, 0x00000B0B cmp_loop FRQCRD, 0x80000000, 0x00000000
+ write32 CPGXXCR4, 0xfffffffc + bx lr
.pool