armv8: ls1012a: Pass PPFE firmware to Linux through FDT

Read Linux PPFE firmware from flash partition and pass it to Linux through
FDT entry. So that we can avoid placing PPFE firmware in Linux rootfs.
(FDT may increase at max by 64KB)

Signed-off-by: Chaitanya Sakinam <chaitanya.sakinam@nxp.com>
Signed-off-by: Anji J <anji.jagarlmudi@nxp.com>
Signed-off-by: Biwen Li <biwen.li@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>

1 files changed, 58 insertions, 2 deletions

diff --git a/drivers/net/pfe_eth/pfe_firmware.c b/drivers/net/pfe_eth/pfe_firmware.c
index eee70a2e73a..ac86e33c550 100644
--- a/drivers/net/pfe_eth/pfe_firmware.c
+++ b/drivers/net/pfe_eth/pfe_firmware.c
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright 2015-2016 Freescale Semiconductor, Inc.
- * Copyright 2017 NXP
+ * Copyright 2017,2021 NXP
  */
 
 /*
@@ -262,7 +262,8 @@ int pfe_firmware_init(void)
 	uintptr_t pfe_img_addr = 0;
 #endif
 	int ret = 0;
-	int fw_count;
+	int fw_count, max_fw_count;
+	const char *p;
 
 	ret = pfe_spi_flash_init();
 	if (ret)
@@ -293,6 +294,61 @@ int pfe_firmware_init(void)
 	}
 #endif
 
+	p = env_get("load_util");
+	if (!p) {
+		max_fw_count = 2;
+	} else {
+		max_fw_count = simple_strtoul(p, NULL, 10);
+		if (max_fw_count)
+			max_fw_count = 3;
+		else
+			max_fw_count = 2;
+	}
+
+	for (fw_count = 0; fw_count < max_fw_count; fw_count++) {
+		switch (fw_count) {
+		case 0:
+			pfe_firmware_name = "class_slowpath";
+			break;
+		case 1:
+			pfe_firmware_name = "tmu_slowpath";
+			break;
+		case 2:
+			pfe_firmware_name = "util_slowpath";
+			break;
+		}
+
+		if (pfe_get_fw(&raw_image_addr, &raw_image_size,
+			       pfe_firmware_name)) {
+			printf("%s firmware couldn't be found in FIT image\n",
+			       pfe_firmware_name);
+			break;
+		}
+		pfe_firmware = malloc(raw_image_size);
+		if (!pfe_firmware)
+			return -ENOMEM;
+		memcpy((void *)pfe_firmware, (void *)raw_image_addr,
+		       raw_image_size);
+
+		switch (fw_count) {
+		case 0:
+			env_set_addr("class_elf_firmware", pfe_firmware);
+			env_set_addr("class_elf_size", (void *)raw_image_size);
+			break;
+		case 1:
+			env_set_addr("tmu_elf_firmware", pfe_firmware);
+			env_set_addr("tmu_elf_size", (void *)raw_image_size);
+			break;
+		case 2:
+			env_set_addr("util_elf_firmware", pfe_firmware);
+			env_set_addr("util_elf_size", (void *)raw_image_size);
+			break;
+		}
+	}
+
+	raw_image_addr = NULL;
+	pfe_firmware = NULL;
+	raw_image_size = 0;
 	for (fw_count = 0; fw_count < 2; fw_count++) {
 		if (fw_count == 0)
 			pfe_firmware_name = "class";