From 8056896dcc43e3b83696f76eefaacfb5bf838377 Mon Sep 17 00:00:00 2001
From: Samin Guo <samin.guo@starfivetech.com>
Date: Tue, 27 Jun 2023 17:46:35 +0800
Subject: board: starfive: vf2: Adjust the CMA size adaptively

Adaptively adjust the CMA size according to the DDR size

Signed-off-by: Samin Guo <samin.guo@starfivetech.com>
---
 include/configs/starfive-visionfive2.h | 35 +++++++++++++++++++++++++++++++++-
 1 file changed, 34 insertions(+), 1 deletion(-)

diff --git a/include/configs/starfive-visionfive2.h b/include/configs/starfive-visionfive2.h
index 1c958a147c..969ac55a3d 100644
--- a/include/configs/starfive-visionfive2.h
+++ b/include/configs/starfive-visionfive2.h
@@ -134,6 +134,37 @@
 		"fi; "						\
 	"fi; \0"
 
+#define CMA_SIZE_SET \
+	"cma_start=70000000\0"					\
+	"cma_1g=b000000\0"					\
+	"cma_2g=20000000\0"					\
+	"cma_4g=40000000\0"	 				\
+	"cma_8g=60000000\0"					\
+	"cma_node=/reserved-memory/linux,cma\0"			\
+	"cma_ddr1g_set="					\
+	"fdt set ${cma_node} size <0x0 0x${cma_1g}>;"		\
+	"fdt set ${cma_node} alloc-ranges <0x0 0x${cma_start} 0x0 0x${cma_1g}>;\0" \
+	"cma_ddr2g_set="					\
+	"fdt set ${cma_node} size <0x0 0x${cma_2g}>;"		\
+	"fdt set ${cma_node} alloc-ranges <0x0 0x${cma_start} 0x0 0x${cma_2g}>;\0" \
+	"cma_ddr4g_set="					\
+	"fdt set ${cma_node} size <0x0 0x${cma_4g}>;"		\
+	"fdt set ${cma_node} alloc-ranges <0x0 0x${cma_start} 0x0 0x${cma_4g}>;\0" \
+	"cma_ddr8g_set="					\
+	"fdt set ${cma_node} size <0x0 0x${cma_8g}>;"		\
+	"fdt set ${cma_node} alloc-ranges <0x0 0x${cma_start} 0x0 0x${cma_8g}>;\0" \
+	"cma_resize="						\
+	"if test ${memory_size} -eq 40000000; then "		\
+		"run cma_ddr1g_set;"				\
+	"elif test ${memory_size} -eq 80000000; then "		\
+		"run cma_ddr2g_set;"				\
+	"elif test ${memory_size} -eq 100000000; then "		\
+		"run cma_ddr4g_set;"				\
+	"elif test ${memory_size} -ge 200000000; then "		\
+		"run cma_ddr8g_set;"				\
+	"fi; \0 "
+
+
 #define VF2_DISTRO_BOOTENV \
 	"fatbootpart=1:3\0"	\
 	"bootdev=mmc\0" \
@@ -201,7 +232,8 @@
 
 #define VISIONFIVE2_MEM_SET	\
 	"visionfive2_mem_set="	\
-	"fdt memory ${memory_addr} ${memory_size};\0"
+	"fdt memory ${memory_addr} ${memory_size};" \
+	"run cma_resize; \0"
 
 #define CHIPA_SET	\
 	"chipa_set="				\
@@ -298,6 +330,7 @@
 	CPU_SPEED_1250_SET				\
 	CPU_SPEED_1500_SET				\
 	CPU_FREQ_VOL_SET				\
+	CMA_SIZE_SET					\
 	CHIPA_SET_FORCE					\
 	VISIONFIVE2_MEM_SET				\
 	"type_guid_gpt_loader1=" TYPE_GUID_LOADER1 "\0" \
-- 
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