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imx8mm_evk: Add Serial Download Protocol support

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Add Serial Download Protocol support as it is a useful method to
load flash.bin to RAM and run it via 'uuu'.

With this patch, it is possible to start both U-Boot SPL and U-Boot
proper using the following 'uuu'command:

$ uuu -brun spl flash.bin

Based on a patch from Marek Vasut for the imx8mm-mx8menlo board.

Also, to fit the SPL binary into the internal RAM, select CONFIG_LTO
to reduce its size.

Signed-off-by: Fabio Estevam <festevam@denx.de>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
This commit is contained in:
Fabio Estevam 2022-09-19 21:20:14 -03:00 committed by Stefano Babic
parent 330fbafa09
commit 750d7ddf2c
2 changed files with 37 additions and 0 deletions
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16
arch/arm/dts/imx8mm-evk-u-boot.dtsi
View File

@ -20,6 +20,10 @@
};
};
&aips4 {
u-boot,dm-spl;
};
&reg_usdhc2_vmmc {
u-boot,off-on-delay-us = <20000>;
};
@ -84,6 +88,18 @@
u-boot,dm-spl;
};
&usbmisc1 {
u-boot,dm-spl;
};
&usbphynop1 {
u-boot,dm-spl;
};
&usbotg1 {
u-boot,dm-spl;
};
&usdhc1 {
u-boot,dm-spl;
};

21
configs/imx8mm_evk_defconfig
View File

@ -17,6 +17,7 @@ CONFIG_SPL_SERIAL=y
CONFIG_SPL_DRIVERS_MISC=y
CONFIG_SPL=y
CONFIG_SYS_LOAD_ADDR=0x40480000
CONFIG_LTO=y
CONFIG_DISTRO_DEFAULTS=y
CONFIG_FIT=y
CONFIG_FIT_EXTERNAL_OFFSET=0x3000
@ -39,6 +40,9 @@ CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR=y
CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR=0x300
CONFIG_SPL_I2C=y
CONFIG_SPL_POWER=y
CONFIG_SPL_USB_HOST=y
CONFIG_SPL_USB_GADGET=y
CONFIG_SPL_USB_SDP_SUPPORT=y
CONFIG_SPL_WATCHDOG=y
CONFIG_SYS_MAXARGS=64
CONFIG_SYS_CBSIZE=2048
@ -51,6 +55,8 @@ CONFIG_CMD_FUSE=y
CONFIG_CMD_GPIO=y
CONFIG_CMD_I2C=y
CONFIG_CMD_MMC=y
CONFIG_CMD_USB_SDP=y
CONFIG_CMD_USB_MASS_STORAGE=y
CONFIG_CMD_CACHE=y
CONFIG_CMD_REGULATOR=y
CONFIG_CMD_EXT4_WRITE=y
@ -81,9 +87,13 @@ CONFIG_PHY_ATHEROS=y
CONFIG_PHY_GIGE=y
CONFIG_FEC_MXC=y
CONFIG_MII=y
CONFIG_SPL_PHY=y
CONFIG_SPL_NOP_PHY=y
CONFIG_PINCTRL=y
CONFIG_SPL_PINCTRL=y
CONFIG_PINCTRL_IMX8M=y
CONFIG_POWER_DOMAIN=y
CONFIG_IMX8M_POWER_DOMAIN=y
CONFIG_DM_PMIC=y
CONFIG_SPL_DM_PMIC_PCA9450=y
CONFIG_DM_REGULATOR=y
@ -98,4 +108,15 @@ CONFIG_SPL_SYSRESET=y
CONFIG_SYSRESET_PSCI=y
CONFIG_SYSRESET_WATCHDOG=y
CONFIG_DM_THERMAL=y
CONFIG_USB=y
CONFIG_USB_EHCI_HCD=y
CONFIG_MXC_USB_OTG_HACTIVE=y
# CONFIG_USB_STORAGE is not set
CONFIG_USB_GADGET=y
CONFIG_USB_GADGET_MANUFACTURER="FSL"
CONFIG_USB_GADGET_VENDOR_NUM=0x0525
CONFIG_USB_GADGET_PRODUCT_NUM=0xa4a5
CONFIG_CI_UDC=y
CONFIG_SDP_LOADADDR=0x40400000
CONFIG_USB_GADGET_DOWNLOAD=y
CONFIG_IMX_WATCHDOG=y