[U-Boot] [PATCH] arm: ls102xa: Update fdt_high and initrd_high for LS1021AQDS board

[U-Boot] [PATCH] arm: ls102xa: Update fdt_high and initrd_high for LS1021AQDS board

[Alison Wang]

As 3G/1G user/kernel memory split is used on LS1021A, the Linux kernel
fails to access the device tree blob on boot. The reason is that u-boot
relocates the device tree blob into high memory when booting the kernel
and the kernel is unable to access the blob.

To avoid this issue, fdt_high is set to the value of 0xffffffff. The
device tree blob will not get relocated and is still in low memory to
make it accessible to the kernel.

For the same reason, initrd_high is set to the value of 0xffffffff too.

This patch is to update fdt_high and initrd_high for LS1021AQDS board.

Signed-off-by: Alison Wang <alison.wang@freescale.com>
---
 include/configs/ls1021aqds.h | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/include/configs/ls1021aqds.h b/include/configs/ls1021aqds.h
index 562e78f..489db9c 100644
--- a/include/configs/ls1021aqds.h
+++ b/include/configs/ls1021aqds.h
@@ -579,14 +579,14 @@ unsigned long get_board_ddr_clk(void);
 #ifdef CONFIG_LPUART
 #define CONFIG_EXTRA_ENV_SETTINGS       \
 	"bootargs=root=/dev/ram0 rw console=ttyLP0,115200\0" \
-	"fdt_high=0xcfffffff\0"         \
-	"initrd_high=0xcfffffff\0"      \
+	"fdt_high=0xffffffff\0"         \
+	"initrd_high=0xffffffff\0"      \
 	"hwconfig=fsl_ddr:ctlr_intlv=null,bank_intlv=null\0"
 #else
 #define CONFIG_EXTRA_ENV_SETTINGS	\
 	"bootargs=root=/dev/ram0 rw console=ttyS0,115200\0" \
-	"fdt_high=0xcfffffff\0"		\
-	"initrd_high=0xcfffffff\0"      \
+	"fdt_high=0xffffffff\0"		\
+	"initrd_high=0xffffffff\0"      \
 	"hwconfig=fsl_ddr:ctlr_intlv=null,bank_intlv=null\0"
 #endif
 
-- 
2.1.0.27.g96db324

[U-Boot] [PATCH] arm: ls102xa: Update fdt_high and initrd_high for LS1021AQDS board

[York Sun]

On 11/04/2015 07:16 PM, Alison Wang wrote:
> As 3G/1G user/kernel memory split is used on LS1021A, the Linux kernel
> fails to access the device tree blob on boot. The reason is that u-boot
> relocates the device tree blob into high memory when booting the kernel
> and the kernel is unable to access the blob.
> 
> To avoid this issue, fdt_high is set to the value of 0xffffffff. The
> device tree blob will not get relocated and is still in low memory to
> make it accessible to the kernel.
> 
> For the same reason, initrd_high is set to the value of 0xffffffff too.
> 
> This patch is to update fdt_high and initrd_high for LS1021AQDS board.
> 
> Signed-off-by: Alison Wang <alison.wang@freescale.com>
> ---
>  include/configs/ls1021aqds.h | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)

Applied to fsl-qoriq master. Thanks.

York