The DFU protocol implementation in U-Boot is much faster than the
FEL protocol implementation in the boot ROM on Allwinner devices.
Using DFU instead of FEL improves the USB transfer speed from
500-900 KB/s to 3.2-3.7 MB/s. This is particularly useful for
reducing the time needed for booting systems with large initrd
images.
FEL is still useful for loading the U-Boot bootloader and a boot
script, which may then activate DFU in the following way:
setenv dfu_alt_info ${dfu_alt_info_ram}
dfu 0 ram 0
bootm ${kernel_addr_r} ${ramdisk_addr_r} ${fdt_addr_r}
The rest of the files can be transferred to the device using the
"dfu-util" tool.
Signed-off-by: Siarhei Siamashka <siarhei.siamas...@gmail.com>
---
include/configs/sunxi-common.h | 30 +++++++++++++++++++++++++-----
1 file changed, 25 insertions(+), 5 deletions(-)
diff --git a/include/configs/sunxi-common.h b/include/configs/sunxi-common.h
index ddcfe94..38c0bc5 100644
--- a/include/configs/sunxi-common.h
+++ b/include/configs/sunxi-common.h
@@ -337,6 +337,7 @@ extern int soft_i2c_gpio_scl;
#define CONFIG_USB_GADGET_VBUS_DRAW 0
#define CONFIG_USB_GADGET_DOWNLOAD
+#define CONFIG_USB_FUNCTION_DFU
#define CONFIG_USB_FUNCTION_FASTBOOT
#define CONFIG_USB_FUNCTION_MASS_STORAGE
#endif
@@ -347,6 +348,11 @@ extern int soft_i2c_gpio_scl;
#define CONFIG_G_DNL_MANUFACTURER "Allwinner Technology"
#endif
+#ifdef CONFIG_USB_FUNCTION_DFU
+#define CONFIG_CMD_DFU
+#define CONFIG_DFU_RAM
+#endif
+
#ifdef CONFIG_USB_FUNCTION_FASTBOOT
#define CONFIG_CMD_FASTBOOT
#define CONFIG_FASTBOOT_BUF_ADDR CONFIG_SYS_LOAD_ADDR
@@ -394,13 +400,26 @@ extern int soft_i2c_gpio_scl;
* 32M uncompressed kernel, 16M compressed kernel, 1M fdt,
* 1M script, 1M pxe and the ramdisk at the end.
*/
+
+#define KERNEL_ADDR_R __stringify(SDRAM_OFFSET(2000000))
+#define FDT_ADDR_R __stringify(SDRAM_OFFSET(3000000))
+#define SCRIPT_ADDR_R __stringify(SDRAM_OFFSET(3100000))
+#define PXEFILE_ADDR_R __stringify(SDRAM_OFFSET(3200000))
+#define RAMDISK_ADDR_R __stringify(SDRAM_OFFSET(3300000))
+
#define MEM_LAYOUT_ENV_SETTINGS \
"bootm_size=0xa000000\0" \
- "kernel_addr_r=" __stringify(SDRAM_OFFSET(2000000)) "\0" \
- "fdt_addr_r=" __stringify(SDRAM_OFFSET(3000000)) "\0" \
- "scriptaddr=" __stringify(SDRAM_OFFSET(3100000)) "\0" \
- "pxefile_addr_r=" __stringify(SDRAM_OFFSET(3200000)) "\0" \
- "ramdisk_addr_r=" __stringify(SDRAM_OFFSET(3300000)) "\0"
+ "kernel_addr_r=" KERNEL_ADDR_R "\0" \
+ "fdt_addr_r=" FDT_ADDR_R "\0" \
+ "scriptaddr=" SCRIPT_ADDR_R "\0" \
+ "pxefile_addr_r=" PXEFILE_ADDR_R "\0" \
+ "ramdisk_addr_r=" RAMDISK_ADDR_R "\0"
+
+#define DFU_ALT_INFO_RAM \
+ "dfu_alt_info_ram=" \
+ "kernel ram " KERNEL_ADDR_R " 0x1000000;" \
+ "fdt ram " FDT_ADDR_R " 0x100000;" \
+ "ramdisk ram " RAMDISK_ADDR_R " 0x4000000\0"
#ifdef CONFIG_MMC
#define BOOT_TARGET_DEVICES_MMC(func) func(MMC, mmc, 0)
@@ -482,6 +501,7 @@ extern int soft_i2c_gpio_scl;
#define CONFIG_EXTRA_ENV_SETTINGS \
CONSOLE_ENV_SETTINGS \
MEM_LAYOUT_ENV_SETTINGS \
+ DFU_ALT_INFO_RAM \
"fdtfile=" CONFIG_DEFAULT_DEVICE_TREE ".dtb\0" \
"console=ttyS0,115200\0" \
BOOTCMD_SUNXI_COMPAT \
--
2.4.10
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