common: spl: rkfw: support bing-up arm32 firmware

1. the arm32 trust firmware is diffirent with arm64, support it.
2. add entry_point_os to indicate the uboot or kernel entry point.

Signed-off-by: Jason Zhu <jason.zhu@rock-chips.com>
Change-Id: I24d1601323e99f40e81d18f1937f762b2ecc137f

common/spl/spl_rkfw.c

@@ -11,6 +11,7 @@
 #include <linux/kernel.h>
 #include <asm/arch/spl_resource_img.h>
 
+#ifdef CONFIG_SPL_ATF
 static const __aligned(16) struct s_fip_name_id fip_name_id[] = {
 	{ BL30_IMAGE_NAME, UUID_SCP_FIRMWARE_BL30 },		/* optional */
 	{ BL31_IMAGE_NAME, UUID_EL3_RUNTIME_FIRMWARE_BL31 },	/* mandatory */
@@ -163,7 +164,7 @@ static int load_image(struct spl_load_info *info,
 }
 
 static int rkfw_load_trust(struct spl_load_info *info, u32 image_sector,
-			   uintptr_t *bl31_entry, uintptr_t *bl32_entry,
+			   struct spl_image_info *spl_image,
 			   int *found_rkfw, u32 try_count)
 {
 	struct tag_tboot_header_2k hdr;
@@ -183,16 +184,16 @@ static int rkfw_load_trust(struct spl_load_info *info, u32 image_sector,
 
 			/* bl31 is mandatory */
 			ret = load_image(info, &hdr, sect_addr,
-					 BL31_IMAGE_NAME, bl31_entry);
+					 BL31_IMAGE_NAME, &spl_image->entry_point);
 			if (ret)
 				continue;
 
 			/* bl32 is optional */
 			ret = load_image(info, &hdr, sect_addr,
-					 BL32_IMAGE_NAME, bl32_entry);
+					 BL32_IMAGE_NAME, &spl_image->entry_point_bl32);
 			if (ret) {
 				if (ret == -ENONET) {
-					*bl32_entry = -1;	/* Not exist */
+					spl_image->entry_point_bl32 = -1;	/* Not exist */
 					ret = 0;
 				} else {
 					continue;
@@ -204,9 +205,52 @@ static int rkfw_load_trust(struct spl_load_info *info, u32 image_sector,
 
 	return ret;
 }
+#else
+static int rkfw_load_trust(struct spl_load_info *info, u32 image_sector,
+			   struct spl_image_info *spl_image,
+			   int *found_rkfw, u32 try_count)
+{
+	struct tag_second_loader_hdr hdr;
+	int i, ret, blkcnt = 4;	/* header sectors, 2KB */
+	char *load_addr;
+	u32 sect_addr;
+
+	/* Detect valid image header */
+	for (i = 0; i < try_count; i++) {
+		sect_addr = image_sector + (i * RKFW_RETRY_SECTOR_SIZE);
+		ret = info->read(info, sect_addr, blkcnt, &hdr);
+		if (ret != blkcnt)
+			continue;
+
+		if (!memcmp(hdr.magic, TBOOT_HEAD_TAG, 6)) {
+			*found_rkfw = 1;
+			spl_image->entry_point = (uintptr_t)hdr.loader_load_addr;
+			/* Load full binary image(right behind header) */
+			sect_addr += blkcnt;
+			load_addr = (char *)((size_t)hdr.loader_load_addr);
+			blkcnt = DIV_ROUND_UP(hdr.loader_load_size, 512);
+
+			printf("tee.bin: addr=0x%lx, size=0x%lx\n",
+			       (ulong)load_addr, (ulong)blkcnt * 512);
+			ret = info->read(info, sect_addr, blkcnt, load_addr);
+			if (ret != blkcnt)
+				continue;
+
+			break;
+		}
+	}
+
+	if (i == try_count) {
+		printf("Can not find usable uboot\n");
+		return -ENONET;
+	}
+
+	return 0;
+}
+#endif
 
 static int rkfw_load_uboot(struct spl_load_info *info, u32 image_sector,
-			   uintptr_t *bl33_entry, u32 try_count)
+			   struct spl_image_info *spl_image, u32 try_count)
 {
 	struct tag_second_loader_hdr hdr;
 	int i, ret, blkcnt = 4;	/* header sectors, 2KB */
@@ -242,13 +286,17 @@ static int rkfw_load_uboot(struct spl_load_info *info, u32 image_sector,
 	}
 
 	/* Fill entry point */
-	*bl33_entry = (uintptr_t)hdr.loader_load_addr;
-
+#ifdef CONFIG_SPL_ATF
+	spl_image->entry_point_bl33 = (uintptr_t)hdr.loader_load_addr;
+#endif
+#ifdef CONFIG_SPL_OPTEE
+	spl_image->entry_point_os = (uintptr_t)hdr.loader_load_addr;
+#endif
 	return 0;
 }
 
 static int rkfw_load_kernel(struct spl_load_info *info, u32 image_sector,
-			    uintptr_t *bl33_entry, u32 try_count)
+			    struct spl_image_info *spl_image, u32 try_count)
 {
 	struct andr_img_hdr *hdr;
 	int ret, cnt;
@@ -310,7 +358,7 @@ static int rkfw_load_kernel(struct spl_load_info *info, u32 image_sector,
 			ret = -EIO;
 			goto out;
 		}
-
+#ifdef CONFIG_SPL_KERNEL_BOOT
 		if (spl_resource_image_check_header(head)) {
 			printf("Can't find kernel dtb in spl.");
 		} else {
@@ -327,6 +375,7 @@ static int rkfw_load_kernel(struct spl_load_info *info, u32 image_sector,
 			memcpy((char *)CONFIG_SPL_FDT_ADDR, dtb_temp,
 			       entry->f_size);
 		}
+#endif
 	} else {
 		/* Load dtb image */
 		ret = info->read(info, (dtb_sector >> 9) + image_sector,
@@ -338,7 +387,13 @@ static int rkfw_load_kernel(struct spl_load_info *info, u32 image_sector,
 		}
 	}
 
-	*bl33_entry = CONFIG_SPL_KERNEL_ADDR;
+	spl_image->fdt_addr = (void *)CONFIG_SPL_FDT_ADDR;
+#ifdef CONFIG_SPL_OPTEE
+	spl_image->entry_point_os = (uintptr_t)CONFIG_SPL_KERNEL_ADDR;
+#endif
+#ifdef CONFIG_SPL_ATF
+	spl_image->entry_point_bl33 = CONFIG_SPL_KERNEL_ADDR;
+#endif
 	ret = 0;
 out:
 	free(hdr);
@@ -353,9 +408,7 @@ int spl_load_rkfw_image(struct spl_image_info *spl_image,
 	int ret, try_count = RKFW_RETRY_SECTOR_TIMES;
 	int found_rkfw = 0;
 
-	ret = rkfw_load_trust(info, trust_sector,
-			      &spl_image->entry_point,
-			      &spl_image->entry_point_bl32,
+	ret = rkfw_load_trust(info, trust_sector, spl_image,
 			      &found_rkfw, try_count);
 	if (ret) {
 		printf("Load trust image failed! ret=%d\n", ret);
@@ -363,14 +416,14 @@ int spl_load_rkfw_image(struct spl_image_info *spl_image,
 	}
 
 	ret = rkfw_load_uboot(info, uboot_sector,
-			      &spl_image->entry_point_bl33, try_count);
+			      spl_image, try_count);
 	if (ret)
 		printf("Load uboot image failed! ret=%d\n", ret);
 	else
 		goto boot;
 
 	ret = rkfw_load_kernel(info, uboot_sector,
-			     &spl_image->entry_point_bl33, try_count);
+			       spl_image, try_count);
 	if (ret) {
 		printf("Load kernel image failed! ret=%d\n", ret);
 		goto out;
@@ -380,7 +433,11 @@ boot:
 #if CONFIG_IS_ENABLED(LOAD_FIT)
 	spl_image->fdt_addr = 0;
 #endif
+#ifdef CONFIG_SPL_ATF
 	spl_image->os = IH_OS_ARM_TRUSTED_FIRMWARE;
+#else
+	spl_image->os = IH_OS_OP_TEE;
+#endif
 
 out:
 	/* If not found rockchip firmware, try others outside */

include/spl.h

@@ -29,9 +29,10 @@ struct spl_image_info {
 	uintptr_t entry_point_bl32;
 	uintptr_t entry_point_bl33;
 #endif
-#if CONFIG_IS_ENABLED(LOAD_FIT)
-	void *fdt_addr;
+#if CONFIG_IS_ENABLED(OPTEE)
+	uintptr_t entry_point_os;	/* point to uboot or kernel */
 #endif
+	void *fdt_addr;
 	u32 boot_device;
 	u32 size;
 	u32 flags;

include/spl_rkfw.h

@@ -9,7 +9,11 @@
 #include <spl.h>
 
 #define LOADER_HARD_STR			"LOADER"
+#ifdef CONFIG_SPL_ATF
 #define TBOOT_HEAD_TAG			0x58334c42 /* 'B', 'L', '3', 'X' */
+#else
+#define TBOOT_HEAD_TAG			"TOS   "
+#endif
 
 #define BL30_IMAGE_NAME			"bl30.bin" /* SCP Firmware BL3-0 */
 #define BL31_IMAGE_NAME			"bl31.bin" /* EL3 Runtime Firmware BL31 */