stm32mp1: activate SET_DFU_ALT_INFO

Generate automatically dfu_alt_info for the supported device.
The simple command "dfu 0" allows to start the dfu stack on usb 0
for the supported devices:
- dfu mtd for nand0
- dfu mtd for nor0
- dfu mmc for SDCard
- dfu mmc for eMMC
- dfu ram for images in DDR

The DUF alternate use the "part", "partubi" and "mmcpart" options
to select the correct MTD or GPT partition or the eMMC hw boot partition.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>

2 files changed, 162 insertions, 0 deletions

diff --git a/board/st/stm32mp1/README b/board/st/stm32mp1/README
index c807e0842eb..f2069bcefaf 100644
--- a/board/st/stm32mp1/README
+++ b/board/st/stm32mp1/README
@@ -390,3 +390,114 @@ B/ Automatically by using FIT feature and generic DISTRO bootcmd
     the correct configuration
 	=> stm32mp157c-ev1-m4
 	=> stm32mp157c-dk2-m4
+
+11. DFU support
+===============
+
+The DFU is supported on ST board.
+The env variable dfu_alt_info is automatically build, and all
+the memory present on the ST boards are exported.
+
+The mode is started by
+
+STM32MP> dfu 0
+
+On EV1 board:
+
+STM32MP> dfu 0 list
+
+DFU alt settings list:
+dev: RAM alt: 0 name: uImage layout: RAM_ADDR
+dev: RAM alt: 1 name: devicetree.dtb layout: RAM_ADDR
+dev: RAM alt: 2 name: uramdisk.image.gz layout: RAM_ADDR
+dev: eMMC alt: 3 name: sdcard_fsbl1 layout: RAW_ADDR
+dev: eMMC alt: 4 name: sdcard_fsbl2 layout: RAW_ADDR
+dev: eMMC alt: 5 name: sdcard_ssbl layout: RAW_ADDR
+dev: eMMC alt: 6 name: sdcard_bootfs layout: RAW_ADDR
+dev: eMMC alt: 7 name: sdcard_vendorfs layout: RAW_ADDR
+dev: eMMC alt: 8 name: sdcard_rootfs layout: RAW_ADDR
+dev: eMMC alt: 9 name: sdcard_userfs layout: RAW_ADDR
+dev: eMMC alt: 10 name: emmc_fsbl1 layout: RAW_ADDR
+dev: eMMC alt: 11 name: emmc_fsbl2 layout: RAW_ADDR
+dev: eMMC alt: 12 name: emmc_ssbl layout: RAW_ADDR
+dev: eMMC alt: 13 name: emmc_bootfs layout: RAW_ADDR
+dev: eMMC alt: 14 name: emmc_vendorfs layout: RAW_ADDR
+dev: eMMC alt: 15 name: emmc_rootfs layout: RAW_ADDR
+dev: eMMC alt: 16 name: emmc_userfs layout: RAW_ADDR
+dev: MTD alt: 17 name: nor_fsbl1 layout: RAW_ADDR
+dev: MTD alt: 18 name: nor_fsbl2 layout: RAW_ADDR
+dev: MTD alt: 19 name: nor_ssbl layout: RAW_ADDR
+dev: MTD alt: 20 name: nor_env layout: RAW_ADDR
+dev: MTD alt: 21 name: nand_fsbl layout: RAW_ADDR
+dev: MTD alt: 22 name: nand_ssbl1 layout: RAW_ADDR
+dev: MTD alt: 23 name: nand_ssbl2 layout: RAW_ADDR
+dev: MTD alt: 24 name: nand_UBI layout: RAW_ADDR
+dev: VIRT alt: 25 name: OTP layout: RAW_ADDR
+dev: VIRT alt: 26 name: PMIC layout: RAW_ADDR
+
+All the supported device are exported for dfu-util tool:
+
+$> dfu-util -l
+Found DFU: [0483:5720] ver=9999, devnum=99, cfg=1, intf=0, alt=26, name="PMIC", serial="002700333338511934383330"
+Found DFU: [0483:5720] ver=9999, devnum=99, cfg=1, intf=0, alt=25, name="OTP", serial="002700333338511934383330"
+Found DFU: [0483:5720] ver=9999, devnum=99, cfg=1, intf=0, alt=24, name="nand_UBI", serial="002700333338511934383330"
+Found DFU: [0483:5720] ver=9999, devnum=99, cfg=1, intf=0, alt=23, name="nand_ssbl2", serial="002700333338511934383330"
+Found DFU: [0483:5720] ver=9999, devnum=99, cfg=1, intf=0, alt=22, name="nand_ssbl1", serial="002700333338511934383330"
+Found DFU: [0483:5720] ver=9999, devnum=99, cfg=1, intf=0, alt=21, name="nand_fsbl", serial="002700333338511934383330"
+Found DFU: [0483:5720] ver=9999, devnum=99, cfg=1, intf=0, alt=20, name="nor_env", serial="002700333338511934383330"
+Found DFU: [0483:5720] ver=9999, devnum=99, cfg=1, intf=0, alt=19, name="nor_ssbl", serial="002700333338511934383330"
+Found DFU: [0483:5720] ver=9999, devnum=99, cfg=1, intf=0, alt=18, name="nor_fsbl2", serial="002700333338511934383330"
+Found DFU: [0483:5720] ver=9999, devnum=99, cfg=1, intf=0, alt=17, name="nor_fsbl1", serial="002700333338511934383330"
+Found DFU: [0483:5720] ver=9999, devnum=99, cfg=1, intf=0, alt=16, name="emmc_userfs", serial="002700333338511934383330"
+Found DFU: [0483:5720] ver=9999, devnum=99, cfg=1, intf=0, alt=15, name="emmc_rootfs", serial="002700333338511934383330"
+Found DFU: [0483:5720] ver=9999, devnum=99, cfg=1, intf=0, alt=14, name="emmc_vendorfs", serial="002700333338511934383330"
+Found DFU: [0483:5720] ver=9999, devnum=99, cfg=1, intf=0, alt=13, name="emmc_bootfs", serial="002700333338511934383330"
+Found DFU: [0483:5720] ver=9999, devnum=99, cfg=1, intf=0, alt=12, name="emmc_ssbl", serial="002700333338511934383330"
+Found DFU: [0483:5720] ver=9999, devnum=99, cfg=1, intf=0, alt=11, name="emmc_fsbl2", serial="002700333338511934383330"
+Found DFU: [0483:5720] ver=9999, devnum=99, cfg=1, intf=0, alt=10, name="emmc_fsbl1", serial="002700333338511934383330"
+Found DFU: [0483:5720] ver=9999, devnum=99, cfg=1, intf=0, alt=9, name="sdcard_userfs", serial="002700333338511934383330"
+Found DFU: [0483:5720] ver=9999, devnum=99, cfg=1, intf=0, alt=8, name="sdcard_rootfs", serial="002700333338511934383330"
+Found DFU: [0483:5720] ver=9999, devnum=99, cfg=1, intf=0, alt=7, name="sdcard_vendorfs", serial="002700333338511934383330"
+Found DFU: [0483:5720] ver=9999, devnum=99, cfg=1, intf=0, alt=6, name="sdcard_bootfs", serial="002700333338511934383330"
+Found DFU: [0483:5720] ver=9999, devnum=99, cfg=1, intf=0, alt=5, name="sdcard_ssbl", serial="002700333338511934383330"
+Found DFU: [0483:5720] ver=9999, devnum=99, cfg=1, intf=0, alt=4, name="sdcard_fsbl2", serial="002700333338511934383330"
+Found DFU: [0483:5720] ver=9999, devnum=99, cfg=1, intf=0, alt=3, name="sdcard_fsbl1", serial="002700333338511934383330"
+Found DFU: [0483:5720] ver=9999, devnum=99, cfg=1, intf=0, alt=2, name="uramdisk.image.gz", serial="002700333338511934383330"
+Found DFU: [0483:5720] ver=9999, devnum=99, cfg=1, intf=0, alt=1, name="devicetree.dtb", serial="002700333338511934383330"
+Found DFU: [0483:5720] ver=9999, devnum=99, cfg=1, intf=0, alt=0, name="uImage", serial="002700333338511934383330"
+
+You can update the boot device:
+
+#SDCARD
+$> dfu-util -d 0483:5720 -a 3 -D tf-a-stm32mp157c-ev1-trusted.stm32
+$> dfu-util -d 0483:5720 -a 4 -D tf-a-stm32mp157c-ev1-trusted.stm32
+$> dfu-util -d 0483:5720 -a 5 -D u-boot-stm32mp157c-ev1-trusted.img
+$> dfu-util -d 0483:5720 -a 6 -D st-image-bootfs-openstlinux-weston-stm32mp1.ext4
+$> dfu-util -d 0483:5720 -a 7 -D st-image-vendorfs-openstlinux-weston-stm32mp1.ext4
+$> dfu-util -d 0483:5720 -a 8 -D st-image-weston-openstlinux-weston-stm32mp1.ext4
+$> dfu-util -d 0483:5720 -a 9 -D st-image-userfs-openstlinux-weston-stm32mp1.ext4
+
+#EMMC
+$> dfu-util -d 0483:5720 -a 10 -D tf-a-stm32mp157c-ev1-trusted.stm32
+$> dfu-util -d 0483:5720 -a 11 -D tf-a-stm32mp157c-ev1-trusted.stm32
+$> dfu-util -d 0483:5720 -a 12 -D u-boot-stm32mp157c-ev1-trusted.img
+$> dfu-util -d 0483:5720 -a 13 -D st-image-bootfs-openstlinux-weston-stm32mp1.ext4
+$> dfu-util -d 0483:5720 -a 14 -D st-image-vendorfs-openstlinux-weston-stm32mp1.ext4
+$> dfu-util -d 0483:5720 -a 15 -D st-image-weston-openstlinux-weston-stm32mp1.ext4
+$> dfu-util -d 0483:5720 -a 16 -D st-image-userfs-openstlinux-weston-stm32mp1.ext4
+
+#NOR
+$> dfu-util -d 0483:5720 -a 17 -D tf-a-stm32mp157c-ev1-trusted.stm32
+$> dfu-util -d 0483:5720 -a 18 -D tf-a-stm32mp157c-ev1-trusted.stm32
+$> dfu-util -d 0483:5720 -a 19 -D u-boot-stm32mp157c-ev1-trusted.img
+
+#NAND (UBI partition used for NAND only boot or NOR + NAND boot)
+$> dfu-util -d 0483:5720 -a 21 -D tf-a-stm32mp157c-ev1-trusted.stm32
+$> dfu-util -d 0483:5720 -a 22 -D u-boot-stm32mp157c-ev1-trusted.img
+$> dfu-util -d 0483:5720 -a 23 -D u-boot-stm32mp157c-ev1-trusted.img
+$> dfu-util -d 0483:5720 -a 24 -D st-image-weston-openstlinux-weston-stm32mp1_nand_4_256_multivolume.ubi
+
+And you can also dump the OTP and the PMIC NVM with:
+
+$> dfu-util -d 0483:5720 -a 25 -U otp.bin
+$> dfu-util -d 0483:5720 -a 26 -U pmic.bin
diff --git a/board/st/stm32mp1/stm32mp1.c b/board/st/stm32mp1/stm32mp1.c
index 126af301732..a8f8ccad899 100644
--- a/board/st/stm32mp1/stm32mp1.c
+++ b/board/st/stm32mp1/stm32mp1.c
@@ -14,6 +14,7 @@
 #include <generic-phy.h>
 #include <i2c.h>
 #include <led.h>
+#include <memalign.h>
 #include <misc.h>
 #include <mtd.h>
 #include <mtd_node.h>
@@ -920,6 +921,56 @@ int ft_board_setup(void *blob, bd_t *bd)
 }
 #endif
 
+#ifdef CONFIG_SET_DFU_ALT_INFO
+#define DFU_ALT_BUF_LEN SZ_1K
+
+static void board_get_alt_info(const char *dev, char *buff)
+{
+	char var_name[32] = "dfu_alt_info_";
+	int ret;
+
+	ALLOC_CACHE_ALIGN_BUFFER(char, tmp_alt, DFU_ALT_BUF_LEN);
+
+	/* name of env variable to read = dfu_alt_info_<dev> */
+	strcat(var_name, dev);
+	ret = env_get_f(var_name, tmp_alt, DFU_ALT_BUF_LEN);
+	if (ret) {
+		if (buff[0] != '\0')
+			strcat(buff, "&");
+		strncat(buff, tmp_alt, DFU_ALT_BUF_LEN);
+	}
+}
+
+void set_dfu_alt_info(char *interface, char *devstr)
+{
+	struct udevice *dev;
+
+	ALLOC_CACHE_ALIGN_BUFFER(char, buf, DFU_ALT_BUF_LEN);
+
+	if (env_get("dfu_alt_info"))
+		return;
+
+	memset(buf, 0, sizeof(buf));
+
+	board_get_alt_info("ram", buf);
+
+	if (!uclass_get_device(UCLASS_MMC, 0, &dev))
+		board_get_alt_info("mmc0", buf);
+
+	if (!uclass_get_device(UCLASS_MMC, 1, &dev))
+		board_get_alt_info("mmc1", buf);
+
+	if (!uclass_get_device(UCLASS_SPI_FLASH, 0, &dev))
+		board_get_alt_info("nor0", buf);
+
+	if (!uclass_get_device(UCLASS_MTD, 0, &dev))
+		board_get_alt_info("nand0", buf);
+
+	env_set("dfu_alt_info", buf);
+	puts("DFU alt info setting: done\n");
+}
+#endif
+
 static void board_copro_image_process(ulong fw_image, size_t fw_size)
 {
 	int ret, id = 0; /* Copro id fixed to 0 as only one coproc on mp1 */