arm: imx8ulp: add container support

i.MX8ULP support using ROM API to load container image,
it use same ROM API as i.MX8MN/MP, and use same container format
as i.MX8QM/QXP.

Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>

arch/arm/include/asm/arch-imx8ulp/sys_proto.h

@@ -10,5 +10,7 @@
 
 extern unsigned long rom_pointer[];
 
+ulong spl_romapi_raw_seekable_read(u32 offset, u32 size, void *buf);
+ulong spl_romapi_get_uboot_base(u32 image_offset, u32 rom_bt_dev);
 enum bt_mode get_boot_mode(void);
 #endif

arch/arm/include/asm/mach-imx/image.h

@@ -64,4 +64,6 @@ struct generate_key_blob_hdr {
 	u8 algorithm;
 	u8 mode;
 } __packed;
+
+int get_container_size(ulong addr, u16 *header_length);
 #endif

arch/arm/include/asm/mach-imx/sys_proto.h

@@ -145,7 +145,7 @@ struct rproc_att {
 	u32 size; /* size of reg range */
 };
 
-#ifdef CONFIG_IMX8M
+#if defined(CONFIG_IMX8M) || defined(CONFIG_IMX8ULP)
 struct rom_api {
 	u16 ver;
 	u16 tag;

arch/arm/mach-imx/Kconfig

@@ -161,7 +161,7 @@ config DDRMC_VF610_CALIBRATION
 
 config SPL_IMX_ROMAPI_LOADADDR
 	hex "Default load address to load image through ROM API"
-	depends on IMX8MN || IMX8MP
+	depends on IMX8MN || IMX8MP || IMX8ULP
 
 config IMX_DCD_ADDR
 	hex "DCD Blocks location on the image"

arch/arm/mach-imx/image-container.c

@@ -19,8 +19,9 @@
 #define QSPI_DEV	1
 #define NAND_DEV	2
 #define QSPI_NOR_DEV	3
+#define ROM_API_DEV	4
 
-static int __get_container_size(ulong addr)
+int get_container_size(ulong addr, u16 *header_length)
 {
 	struct container_hdr *phdr;
 	struct boot_img_t *img_entry;
@@ -34,7 +35,9 @@ static int __get_container_size(ulong addr)
 		return -EFAULT;
 	}
 
-	max_offset = sizeof(struct container_hdr);
+	max_offset = phdr->length_lsb + (phdr->length_msb << 8);
+	if (header_length)
+		*header_length = max_offset;
 
 	img_entry = (struct boot_img_t *)(addr + sizeof(struct container_hdr));
 	for (i = 0; i < phdr->num_images; i++) {
@@ -60,7 +63,7 @@ static int __get_container_size(ulong addr)
 	return max_offset;
 }
 
-static int get_container_size(void *dev, int dev_type, unsigned long offset)
+static int get_dev_container_size(void *dev, int dev_type, unsigned long offset, u16 *header_length)
 {
 	u8 *buf = malloc(CONTAINER_HDR_ALIGNMENT);
 	int ret = 0;
@@ -115,7 +118,17 @@ static int get_container_size(void *dev, int dev_type, unsigned long offset)
 		memcpy(buf, (const void *)offset, CONTAINER_HDR_ALIGNMENT);
 #endif
 
-	ret = __get_container_size((ulong)buf);
+#ifdef CONFIG_SPL_BOOTROM_SUPPORT
+	if (dev_type == ROM_API_DEV) {
+		ret = spl_romapi_raw_seekable_read(offset, CONTAINER_HDR_ALIGNMENT, buf);
+		if (!ret) {
+			printf("Read container image from ROM API failed\n");
+			return -EIO;
+		}
+	}
+#endif
+
+	ret = get_container_size((ulong)buf, header_length);
 
 	free(buf);
 
@@ -149,6 +162,8 @@ static unsigned long get_boot_device_offset(void *dev, int dev_type)
 		offset = CONTAINER_HDR_NAND_OFFSET;
 	} else if (dev_type == QSPI_NOR_DEV) {
 		offset = CONTAINER_HDR_QSPI_OFFSET + 0x08000000;
+	} else if (dev_type == ROM_API_DEV) {
+		offset = (unsigned long)dev;
 	}
 
 	return offset;
@@ -158,11 +173,12 @@ static int get_imageset_end(void *dev, int dev_type)
 {
 	unsigned long offset1 = 0, offset2 = 0;
 	int value_container[2];
+	u16 hdr_length;
 
 	offset1 = get_boot_device_offset(dev, dev_type);
 	offset2 = CONTAINER_HDR_ALIGNMENT + offset1;
 
-	value_container[0] = get_container_size(dev, dev_type, offset1);
+	value_container[0] = get_dev_container_size(dev, dev_type, offset1, &hdr_length);
 	if (value_container[0] < 0) {
 		printf("Parse seco container failed %d\n", value_container[0]);
 		return value_container[0];
@@ -170,7 +186,7 @@ static int get_imageset_end(void *dev, int dev_type)
 
 	debug("seco container size 0x%x\n", value_container[0]);
 
-	value_container[1] = get_container_size(dev, dev_type, offset2);
+	value_container[1] = get_dev_container_size(dev, dev_type, offset2, &hdr_length);
 	if (value_container[1] < 0) {
 		debug("Parse scu container failed %d, only seco container\n",
 		      value_container[1]);
@@ -247,3 +263,17 @@ unsigned long spl_nor_get_uboot_base(void)
 	return end;
 }
 #endif
+
+#ifdef CONFIG_SPL_BOOTROM_SUPPORT
+ulong spl_romapi_get_uboot_base(u32 image_offset, u32 rom_bt_dev)
+{
+	ulong end;
+
+	end = get_imageset_end((void *)(ulong)image_offset, ROM_API_DEV);
+	end = ROUND(end, SZ_1K);
+
+	printf("Load image from 0x%lx by ROM_API\n", end);
+
+	return end;
+}
+#endif

arch/arm/mach-imx/imx8ulp/soc.c

@@ -12,6 +12,8 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
+struct rom_api *g_rom_api = (struct rom_api *)0x1980;
+
 u32 get_cpu_rev(void)
 {
 	return (MXC_CPU_IMX8ULP << 12) | CHIP_REV_1_0;

arch/arm/mach-imx/spl_imx_romapi.c

@@ -10,11 +10,44 @@
 #include <asm/global_data.h>
 #include <linux/libfdt.h>
 #include <spl.h>
-
+#include <asm/mach-imx/image.h>
 #include <asm/arch/sys_proto.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
+/* Caller need ensure the offset and size to align with page size */
+ulong spl_romapi_raw_seekable_read(u32 offset, u32 size, void *buf)
+{
+	volatile gd_t *pgd = gd;
+	int ret;
+
+	debug("%s 0x%x, size 0x%x\n", __func__, offset, size);
+
+	ret = g_rom_api->download_image(buf, offset, size,
+					((uintptr_t)buf) ^ offset ^ size);
+
+	set_gd(pgd);
+
+	if (ret == ROM_API_OKAY)
+		return size;
+
+	printf("%s Failure when load 0x%x, size 0x%x\n", __func__, offset, size);
+
+	return 0;
+}
+
+ulong __weak spl_romapi_get_uboot_base(u32 image_offset, u32 rom_bt_dev)
+{
+	u32 offset;
+
+	if (((rom_bt_dev >> 16) & 0xff) ==  BT_DEV_TYPE_FLEXSPINOR)
+		offset = CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR * 512;
+	else
+		offset = image_offset + CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR * 512 - 0x8000;
+
+	return offset;
+}
+
 static int is_boot_from_stream_device(u32 boot)
 {
 	u32 interface;
@@ -34,25 +67,12 @@ static ulong spl_romapi_read_seekable(struct spl_load_info *load,
 				      void *buf)
 {
 	u32 pagesize = *(u32 *)load->priv;
-	volatile gd_t *pgd = gd;
 	ulong byte = count * pagesize;
-	int ret;
 	u32 offset;
 
 	offset = sector * pagesize;
 
-	debug("ROM API load from 0x%x, size 0x%x\n", offset, (u32)byte);
+	return spl_romapi_raw_seekable_read(offset, byte, buf) / pagesize;
-
-	ret = g_rom_api->download_image(buf, offset, byte,
-					((uintptr_t)buf) ^ offset ^ byte);
-	set_gd(pgd);
-
-	if (ret == ROM_API_OKAY)
-		return count;
-
-	printf("ROM API Failure when load 0x%x\n", offset);
-
-	return 0;
 }
 
 static int spl_romapi_load_image_seekable(struct spl_image_info *spl_image,
@@ -85,11 +105,7 @@ static int spl_romapi_load_image_seekable(struct spl_image_info *spl_image,
 	printf("image offset 0x%x, pagesize 0x%x, ivt offset 0x%x\n",
 	       image_offset, pagesize, offset);
 
-	if (((rom_bt_dev >> 16) & 0xff) ==  BT_DEV_TYPE_FLEXSPINOR)
+	offset = spl_romapi_get_uboot_base(image_offset, rom_bt_dev);
-		offset = CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR * 512;
-	else
-		offset = image_offset +
-			CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR * 512 - 0x8000;
 
 	size = ALIGN(sizeof(struct image_header), pagesize);
 	ret = g_rom_api->download_image((u8 *)header, offset, size,
@@ -102,16 +118,23 @@ static int spl_romapi_load_image_seekable(struct spl_image_info *spl_image,
 		return -1;
 	}
 
-	if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
+	if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) && image_get_magic(header) == FDT_MAGIC) {
-	    image_get_magic(header) == FDT_MAGIC) {
 		struct spl_load_info load;
 
 		memset(&load, 0, sizeof(load));
 		load.bl_len = pagesize;
 		load.read = spl_romapi_read_seekable;
 		load.priv = &pagesize;
-		return spl_load_simple_fit(spl_image, &load,
+		return spl_load_simple_fit(spl_image, &load, offset / pagesize, header);
-					   offset / pagesize, header);
+	} else if (IS_ENABLED(CONFIG_SPL_LOAD_IMX_CONTAINER)) {
+		struct spl_load_info load;
+
+		memset(&load, 0, sizeof(load));
+		load.bl_len = pagesize;
+		load.read = spl_romapi_read_seekable;
+		load.priv = &pagesize;
+
+		ret = spl_load_imx_container(spl_image, &load, offset / pagesize);
 	} else {
 		/* TODO */
 		puts("Can't support legacy image\n");
@@ -154,7 +177,7 @@ static ulong get_fit_image_size(void *fit)
 	return last - (ulong)fit;
 }
 
-u8 *search_fit_header(u8 *p, int size)
+static u8 *search_fit_header(u8 *p, int size)
 {
 	int i;
 
@@ -165,6 +188,71 @@ u8 *search_fit_header(u8 *p, int size)
 	return NULL;
 }
 
+static u8 *search_container_header(u8 *p, int size)
+{
+	int i = 0;
+	u8 *hdr;
+
+	for (i = 0; i < size; i += 4) {
+		hdr = p + i;
+		if (*(hdr + 3) == 0x87 && *hdr == 0 && (*(hdr + 1) != 0 || *(hdr + 2) != 0))
+			return p + i;
+	}
+
+	return NULL;
+}
+
+static u8 *search_img_header(u8 *p, int size)
+{
+	if (IS_ENABLED(CONFIG_SPL_LOAD_FIT))
+		return search_fit_header(p, size);
+	else if (IS_ENABLED(CONFIG_SPL_LOAD_IMX_CONTAINER))
+		return search_container_header(p, size);
+
+	return NULL;
+}
+
+static u32 img_header_size(void)
+{
+	if (IS_ENABLED(CONFIG_SPL_LOAD_FIT))
+		return sizeof(struct fdt_header);
+	else if (IS_ENABLED(CONFIG_SPL_LOAD_IMX_CONTAINER))
+		return sizeof(struct container_hdr);
+
+	return 0;
+}
+
+static int img_info_size(void *img_hdr)
+{
+#ifdef CONFIG_SPL_LOAD_FIT
+	return fit_get_size(img_hdr);
+#elif defined CONFIG_SPL_LOAD_IMX_CONTAINER
+	struct container_hdr *container = img_hdr;
+
+	return (container->length_lsb + (container->length_msb << 8));
+#else
+	return 0;
+#endif
+}
+
+static int img_total_size(void *img_hdr)
+{
+	if (IS_ENABLED(CONFIG_SPL_LOAD_FIT)) {
+		return get_fit_image_size(img_hdr);
+	} else if (IS_ENABLED(CONFIG_SPL_LOAD_IMX_CONTAINER)) {
+		int total = get_container_size((ulong)img_hdr, NULL);
+
+		if (total < 0) {
+			printf("invalid container image\n");
+			return 0;
+		}
+
+		return total;
+	}
+
+	return 0;
+}
+
 static int spl_romapi_load_image_stream(struct spl_image_info *spl_image,
 					struct spl_boot_device *bootdev)
 {
@@ -174,7 +262,7 @@ static int spl_romapi_load_image_stream(struct spl_image_info *spl_image,
 	int ret;
 	int i = 0;
 	u8 *p = (u8 *)CONFIG_SPL_IMX_ROMAPI_LOADADDR;
-	u8 *pfit = NULL;
+	u8 *phdr = NULL;
 	int imagesize;
 	int total;
 
@@ -199,19 +287,19 @@ static int spl_romapi_load_image_stream(struct spl_image_info *spl_image,
 			return -1;
 		}
 
-		pfit = search_fit_header(p, pg);
+		phdr = search_img_header(p, pg);
 		p += pg;
 
-		if (pfit)
+		if (phdr)
 			break;
 	}
 
-	if (!pfit) {
+	if (!phdr) {
-		puts("Can't found uboot FIT image in 640K range \n");
+		puts("Can't found uboot image in 640K range\n");
 		return -1;
 	}
 
-	if (p - pfit < sizeof(struct fdt_header)) {
+	if (p - phdr < img_header_size()) {
 		ret = g_rom_api->download_image(p, 0, pg,  ((uintptr_t)p) ^ pg);
 		set_gd(pgd);
 
@@ -223,11 +311,11 @@ static int spl_romapi_load_image_stream(struct spl_image_info *spl_image,
 		p += pg;
 	}
 
-	imagesize = fit_get_size(pfit);
+	imagesize = img_info_size(phdr);
-	printf("Find FIT header 0x&%p, size %d\n", pfit, imagesize);
+	printf("Find img info 0x&%p, size %d\n", phdr, imagesize);
 
-	if (p - pfit < imagesize) {
+	if (p - phdr < imagesize) {
-		imagesize -= p - pfit;
+		imagesize -= p - phdr;
 		/*need pagesize hear after ROM fix USB problme*/
 		imagesize += pg - 1;
 		imagesize /= pg;
@@ -247,20 +335,21 @@ static int spl_romapi_load_image_stream(struct spl_image_info *spl_image,
 		}
 	}
 
-	total = get_fit_image_size(pfit);
+	total = img_total_size(phdr);
 	total += 3;
 	total &= ~0x3;
 
-	imagesize = total - (p - pfit);
+	imagesize = total - (p - phdr);
 
 	imagesize += pagesize - 1;
 	imagesize /= pagesize;
 	imagesize *= pagesize;
 
-	printf("Download %d, total fit %d\n", imagesize, total);
+	printf("Download %d, Total size %d\n", imagesize, total);
 
 	ret = g_rom_api->download_image(p, 0, imagesize,
 					((uintptr_t)p) ^ imagesize);
+	set_gd(pgd);
 	if (ret != ROM_API_OKAY)
 		printf("ROM download failure %d\n", imagesize);
 
@@ -268,7 +357,12 @@ static int spl_romapi_load_image_stream(struct spl_image_info *spl_image,
 	load.bl_len = 1;
 	load.read = spl_ram_load_read;
 
-	return spl_load_simple_fit(spl_image, &load, (ulong)pfit, pfit);
+	if (IS_ENABLED(CONFIG_SPL_LOAD_FIT))
+		return spl_load_simple_fit(spl_image, &load, (ulong)phdr, phdr);
+	else if (IS_ENABLED(CONFIG_SPL_LOAD_IMX_CONTAINER))
+		return spl_load_imx_container(spl_image, &load, (ulong)phdr);
+
+	return -1;
 }
 
 int board_return_to_bootrom(struct spl_image_info *spl_image,