arm64: xilinx: Move board_get_usable_ram_top() to common location

The commit ce39ee28ec31 ("zynqmp: Do not place u-boot to reserved memory
location") adds functionality for ZynqMP to read reserved memory node and
do not place U-Boot to reserved location. This functionality is generic
across all Xilinx SOCs that's why move it to common location to be used by
all Xilinx SOCs.

On zynq platform this is also fixing issue where U-Boot was placed to
locating which was reserved already which ends up with error message
"ERROR: reserving fdt memory region failed (addr=30000000 size=10000000
flags=4)" which is shown when bdinfo is called.

Tested on vck190, zcu102, zc706 and kc705 to cover all platforms.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/b0817807912f7c7af6a8e1cf9ee04e5ab5de5f6a.1661430188.git.michal.simek@amd.com

4 files changed, 29 insertions, 73 deletions

diff --git a/board/xilinx/common/board.c b/board/xilinx/common/board.c
index 9b4aded466..5e36386361 100644
--- a/board/xilinx/common/board.c
+++ b/board/xilinx/common/board.c
@@ -8,6 +8,8 @@
 #include <efi.h>
 #include <efi_loader.h>
 #include <env.h>
+#include <image.h>
+#include <lmb.h>
 #include <log.h>
 #include <asm/global_data.h>
 #include <asm/sections.h>
@@ -602,3 +604,30 @@ int embedded_dtb_select(void)
 	return 0;
 }
 #endif
+
+#if defined(CONFIG_LMB)
+ulong board_get_usable_ram_top(ulong total_size)
+{
+	phys_size_t size;
+	phys_addr_t reg;
+	struct lmb lmb;
+
+	if (!total_size)
+		return gd->ram_top;
+
+	if (!IS_ALIGNED((ulong)gd->fdt_blob, 0x8))
+		panic("Not 64bit aligned DT location: %p\n", gd->fdt_blob);
+
+	/* found enough not-reserved memory to relocated U-Boot */
+	lmb_init(&lmb);
+	lmb_add(&lmb, gd->ram_base, gd->ram_size);
+	boot_fdt_add_mem_rsv_regions(&lmb, (void *)gd->fdt_blob);
+	size = ALIGN(CONFIG_SYS_MALLOC_LEN + total_size, MMU_SECTION_SIZE);
+	reg = lmb_alloc(&lmb, size, MMU_SECTION_SIZE);
+
+	if (!reg)
+		reg = gd->ram_top - size;
+
+	return reg + size;
+}
+#endif
diff --git a/board/xilinx/microblaze-generic/microblaze-generic.c b/board/xilinx/microblaze-generic/microblaze-generic.c
index f58ecd1590..a427ac94a1 100644
--- a/board/xilinx/microblaze-generic/microblaze-generic.c
+++ b/board/xilinx/microblaze-generic/microblaze-generic.c
@@ -14,8 +14,6 @@
 #include <config.h>
 #include <env.h>
 #include <init.h>
-#include <image.h>
-#include <lmb.h>
 #include <log.h>
 #include <asm/global_data.h>
 #include <dm/lists.h>
@@ -38,25 +36,6 @@ int dram_init(void)
 	return 0;
 };
 
-ulong board_get_usable_ram_top(ulong total_size)
-{
-	phys_size_t size;
-	phys_addr_t reg;
-	struct lmb lmb;
-
-	/* found enough not-reserved memory to relocated U-Boot */
-	lmb_init(&lmb);
-	lmb_add(&lmb, gd->ram_base, gd->ram_size);
-	boot_fdt_add_mem_rsv_regions(&lmb, (void *)gd->fdt_blob);
-	size = ALIGN(CONFIG_SYS_MALLOC_LEN + total_size, MMU_SECTION_SIZE);
-	reg = lmb_alloc(&lmb, size, MMU_SECTION_SIZE);
-
-	if (!reg)
-		reg = gd->ram_top - size;
-
-	return reg + size;
-}
-
 int board_late_init(void)
 {
 	ulong max_size;
diff --git a/board/xilinx/versal/board.c b/board/xilinx/versal/board.c
index d8f39be56c..f9f5457ed2 100644
--- a/board/xilinx/versal/board.c
+++ b/board/xilinx/versal/board.c
@@ -9,7 +9,6 @@
 #include <env.h>
 #include <fdtdec.h>
 #include <init.h>
-#include <image.h>
 #include <env_internal.h>
 #include <log.h>
 #include <malloc.h>
@@ -270,28 +269,6 @@ int dram_init(void)
 	return 0;
 }
 
-ulong board_get_usable_ram_top(ulong total_size)
-{
-	phys_size_t size;
-	phys_addr_t reg;
-	struct lmb lmb;
-
-	if (!total_size)
-		return gd->ram_top;
-
-	/* found enough not-reserved memory to relocated U-Boot */
-	lmb_init(&lmb);
-	lmb_add(&lmb, gd->ram_base, gd->ram_size);
-	boot_fdt_add_mem_rsv_regions(&lmb, (void *)gd->fdt_blob);
-	size = ALIGN(CONFIG_SYS_MALLOC_LEN + total_size, MMU_SECTION_SIZE);
-	reg = lmb_alloc(&lmb, size, MMU_SECTION_SIZE);
-
-	if (!reg)
-		reg = gd->ram_top - size;
-
-	return reg + size;
-}
-
 void reset_cpu(void)
 {
 }
diff --git a/board/xilinx/zynqmp/zynqmp.c b/board/xilinx/zynqmp/zynqmp.c
index 21bcc26682..62537760df 100644
--- a/board/xilinx/zynqmp/zynqmp.c
+++ b/board/xilinx/zynqmp/zynqmp.c
@@ -12,8 +12,6 @@
 #include <env.h>
 #include <env_internal.h>
 #include <init.h>
-#include <image.h>
-#include <lmb.h>
 #include <log.h>
 #include <net.h>
 #include <sata.h>
@@ -256,33 +254,6 @@ int dram_init(void)
 	return 0;
 }
 
-#if defined(CONFIG_LMB)
-ulong board_get_usable_ram_top(ulong total_size)
-{
-	phys_size_t size;
-	phys_addr_t reg;
-	struct lmb lmb;
-
-	if (!total_size)
-		return gd->ram_top;
-
-	if (!IS_ALIGNED((ulong)gd->fdt_blob, 0x8))
-		panic("Not 64bit aligned DT location: %p\n", gd->fdt_blob);
-
-	/* found enough not-reserved memory to relocated U-Boot */
-	lmb_init(&lmb);
-	lmb_add(&lmb, gd->ram_base, gd->ram_size);
-	boot_fdt_add_mem_rsv_regions(&lmb, (void *)gd->fdt_blob);
-	size = ALIGN(CONFIG_SYS_MALLOC_LEN + total_size, MMU_SECTION_SIZE);
-	reg = lmb_alloc(&lmb, size, MMU_SECTION_SIZE);
-
-	if (!reg)
-		reg = gd->ram_top - size;
-
-	return reg + size;
-}
-#endif
-
 #else
 int dram_init_banksize(void)
 {