ti: k3: abstract common fdt api for reserved mem fixups

The usage of fdt_fixup_reserved is repeated for ATF and OP-TEE for
multiple platforms, this patch creates a single fdt API for fixing up
the reserved-memory node with added error handling.

All k3 platforms already share a common tispl template which ensures
binaries are loaded as per the respective CONFIG_*_LOAD_ADDR. And the
provided new_size for the fixup is overridden by the size from fdt node
anyways. This allows for safe abstraction of the reserved memory fixups
for all current platforms.

fdt_fixup_reserved now abstracts the ATF and OP-TEE fixups by calling
the renamed static fdt_fixup_reserved_memory function with the required
parameters.

Signed-off-by: Anshul Dalal <anshuld@ti.com>

arch/arm/mach-k3/am62ax/am62a7_fdt.c

@@ -9,8 +9,5 @@
 
 int ft_system_setup(void *blob, struct bd_info *bd)
 {
-	fdt_fixup_reserved(blob, "tfa", CONFIG_K3_ATF_LOAD_ADDR, 0x80000);
-	fdt_fixup_reserved(blob, "optee", CONFIG_K3_OPTEE_LOAD_ADDR, 0x1800000);
-
-	return 0;
+	return fdt_fixup_reserved(blob);
 }

arch/arm/mach-k3/am62px/am62p5_fdt.c

@@ -81,8 +81,6 @@ int ft_system_setup(void *blob, struct bd_info *bd)
 	fdt_fixup_canfd_nodes_am62p(blob, k3_has_canfd());
 	fdt_fixup_thermal_critical_trips_k3(blob, k3_get_max_temp());
 	fdt_fixup_thermal_cooling_device_cpus_am62p(blob, k3_get_core_nr());
-	fdt_fixup_reserved(blob, "tfa", CONFIG_K3_ATF_LOAD_ADDR, 0x80000);
-	fdt_fixup_reserved(blob, "optee", CONFIG_K3_OPTEE_LOAD_ADDR, 0x1800000);
 
-	return 0;
+	return fdt_fixup_reserved(blob);
 }

arch/arm/mach-k3/am62x/am625_fdt.c

@@ -80,8 +80,6 @@ int ft_system_setup(void *blob, struct bd_info *bd)
 	fdt_fixup_pru_node_am625(blob, k3_has_pru());
 	fdt_fixup_thermal_critical_trips_k3(blob, k3_get_max_temp());
 	fdt_fixup_thermal_cooling_device_cpus_am625(blob, k3_get_core_nr());
-	fdt_fixup_reserved(blob, "tfa", CONFIG_K3_ATF_LOAD_ADDR, 0x80000);
-	fdt_fixup_reserved(blob, "optee", CONFIG_K3_OPTEE_LOAD_ADDR, 0x1800000);
 
-	return 0;
+	return fdt_fixup_reserved(blob);
 }

arch/arm/mach-k3/common.c

@@ -273,14 +273,14 @@ void enable_caches(void)
 	if (ret)
 		debug("%s: Failed to setup dram banks\n", __func__);
 
+	ret = fdt_fixup_reserved(fdt);
+	if (ret)
+		printf("%s: Failed to perform reserved-memory fixups (%s)\n",
+		       __func__, fdt_strerror(ret));
+
 	mmu_setup();
 
 	if (CONFIG_K3_ATF_LOAD_ADDR >= CFG_SYS_SDRAM_BASE) {
-		ret = fdt_fixup_reserved(fdt, "tfa", CONFIG_K3_ATF_LOAD_ADDR,
-					 0x80000);
-		if (ret)
-			printf("%s: Failed to perform tfa fixups (%s)\n",
-			       __func__, fdt_strerror(ret));
 		ret = mmu_unmap_reserved_mem("tfa", true);
 		if (ret)
 			printf("%s: Failed to unmap tfa reserved mem (%d)\n",
@@ -288,11 +288,6 @@ void enable_caches(void)
 	}
 
 	if (CONFIG_K3_OPTEE_LOAD_ADDR >= CFG_SYS_SDRAM_BASE) {
-		ret = fdt_fixup_reserved(fdt, "optee",
-					 CONFIG_K3_OPTEE_LOAD_ADDR, 0x1800000);
-		if (ret)
-			printf("%s: Failed to perform optee fixups (%s)\n",
-			       __func__, fdt_strerror(ret));
 		ret = mmu_unmap_reserved_mem("optee", true);
 		if (ret)
 			printf("%s: Failed to unmap optee reserved mem (%d)\n",
@@ -463,8 +458,7 @@ void spl_perform_arch_fixups(struct spl_image_info *spl_image)
 	if (!fdt)
 		return;
 
-	fdt_fixup_reserved(fdt, "tfa", CONFIG_K3_ATF_LOAD_ADDR, 0x80000);
-	fdt_fixup_reserved(fdt, "optee", CONFIG_K3_OPTEE_LOAD_ADDR, 0x1800000);
+	fdt_fixup_reserved(fdt);
 }
 
 void spl_board_prepare_for_boot(void)

arch/arm/mach-k3/common_fdt.c

@@ -114,8 +114,9 @@ int fdt_del_node_path(void *blob, const char *path)
 	return ret;
 }
 
-int fdt_fixup_reserved(void *blob, const char *name,
-		       unsigned int new_address, unsigned int new_size)
+static int fdt_fixup_reserved_memory(void *blob, const char *name,
+				     unsigned int new_address,
+				     unsigned int new_size)
 {
 	int nodeoffset, subnode;
 	int ret;
@@ -167,6 +168,19 @@ add_carveout:
 	return 0;
 }
 
+int fdt_fixup_reserved(void *blob)
+{
+	int ret;
+
+	ret = fdt_fixup_reserved_memory(blob, "tfa", CONFIG_K3_ATF_LOAD_ADDR,
+					0x80000);
+	if (ret)
+		return ret;
+
+	return fdt_fixup_reserved_memory(blob, "optee",
+					 CONFIG_K3_OPTEE_LOAD_ADDR, 0x1800000);
+}
+
 static int fdt_fixup_critical_trips(void *blob, int zoneoffset, int maxc)
 {
 	int node, trip;

arch/arm/mach-k3/include/mach/k3-common-fdt.h

@@ -8,8 +8,7 @@
 
 int fdt_fixup_msmc_ram_k3(void *blob);
 int fdt_del_node_path(void *blob, const char *path);
-int fdt_fixup_reserved(void *blob, const char *name,
-		       unsigned int new_address, unsigned int new_size);
+int fdt_fixup_reserved(void *blob);
 void fdt_fixup_thermal_critical_trips_k3(void *blob, int maxc);
 
 #endif /* _K3_COMMON_FDT_H */

arch/arm/mach-k3/j722s/j722s_fdt.c

@@ -9,8 +9,5 @@
 
 int ft_system_setup(void *blob, struct bd_info *bd)
 {
-	fdt_fixup_reserved(blob, "tfa", CONFIG_K3_ATF_LOAD_ADDR, 0x80000);
-	fdt_fixup_reserved(blob, "optee", CONFIG_K3_OPTEE_LOAD_ADDR, 0x1800000);
-
-	return 0;
+	return fdt_fixup_reserved(blob);
 }