Weston killed after applying 2GB DDR related patch

[cjk]

Hi,

We are using imx8mp with 2GB DDR.

So we modified it as follows.

[Kernel]

diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi

index 0bac42e91..1c497335c 100755

--- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi

+++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi

@@ -186,8 +186,8 @@

                linux,cma {

                        compatible = "shared-dma-pool";

                        reusable;

-                       size = <0 0x3c000000>;

-                       alloc-ranges = <0 0x40000000 0 0xC0000000>;

+                       size = <0 0x14000000>;

+                       alloc-ranges = <0 0x40000000 0 0x40000000>;

                        linux,cma-default;

                };

@@ -2315,7 +2315,7 @@

        mix_gpu_ml: mix_gpu_ml {

                compatible = "fsl,imx8mp-gpu", "fsl,imx8-gpu-ss";

                cores = <&gpu_3d>, <&ml_vipsi>, <&gpu_2d>;

-               reg = <0x0 0x40000000 0x0 0xC0000000>, <0x0 0x0 0x0 0x10000000>;

+               reg = <0x0 0x40000000 0x0 0x40000000>, <0x0 0x0 0x0 0x10000000>;

                reg-names = "phys_baseaddr", "contiguous_mem";

                status = "disabled";

        };

[UBOOT]

diff --git a/include/configs/imx8mp_evk.h b/include/configs/imx8mp_evk.h
index c813f825..a788966d 100644
--- a/include/configs/imx8mp_evk.h
+++ b/include/configs/imx8mp_evk.h
@@ -209,16 +209,11 @@
/* Size of malloc() pool */
#define CONFIG_SYS_MALLOC_LEN SZ_32M

-/* Totally 6GB DDR */
+/* Totally 2GB DDR */
#define CONFIG_SYS_SDRAM_BASE 0x40000000
#define PHYS_SDRAM 0x40000000
-#define PHYS_SDRAM_SIZE 0x40000000 /* 1 GB */
+#define PHYS_SDRAM_SIZE 0x80000000 /* 2 GB */
#define PHYS_SDRAM_2 0x100000000
-#ifdef CONFIG_TARGET_IMX8MP_DDR4_EVK
-#define PHYS_SDRAM_2_SIZE 0x40000000 /* 1 GB */
-#else
-#define PHYS_SDRAM_2_SIZE 0x40000000 /* 1 GB */
-#endif

However, after applying the patch, weston is frequently killed as shown below.

Mar 24 10:25:54 imx8mp-lpddr4-evk weston[499]: g2d_alloc: alloc memory fail with size 33177600!
Mar 24 10:25:54 imx8mp-lpddr4-evk kernel: audit: type=1701 audit(1616581554.976:4): auid=0 uid=0 gid=0 ses=2 pid=499 comm="weston" exe="/usr/bin/weston" sig=11 res=1
Mar 24 10:25:54 imx8mp-lpddr4-evk audit[499]: ANOM_ABEND auid=0 uid=0 gid=0 ses=2 pid=499 comm="weston" exe="/usr/bin/weston" sig=11 res=1
Mar 24 10:25:55 imx8mp-lpddr4-evk systemd[1]: weston.service: Main process exited, code=killed, status=11/SEGV
Mar 24 10:25:55 imx8mp-lpddr4-evk systemd[1]: weston.service: Failed with result 'signal'.

Is there any way to solve this problem?

[jimmychan]

Which version of BSP are you using?

[ESK]

Hi, @jimmychan 

We use 5.10.72

Is there any problem using the IMX8MP with 2GB of RAM?

(IMX8MP EVK uses 6BG RAM as a default.)

Could you check points for applying 2GB RAM ? (If there is no problem working with 2GB RAM)  

[mengfei]

hello,

A year has passed. Have you solved this problem yet？