diff options
| author | Stefan Agner <[email protected]> | 2017-08-16 11:00:54 -0700 |
|---|---|---|
| committer | Stefano Babic <[email protected]> | 2017-08-23 10:41:58 +0200 |
| commit | a3774c1c3c28e4ed89a36383ca73970b809bae94 (patch) | |
| tree | 70ac6a2501b2522fcbde3491d51fae4bd0e595ba | |
| parent | 2f005695df7b03d25a367f6bedc41c015088ee29 (diff) | |
spl: add serial download protocol (SDP) support
Add USB serial download protocol support to SPL. If the SoC started
in recovery mode the SPL will immediately switch to SDP and wait for
further downloads/commands from the host side.
Signed-off-by: Stefan Agner <[email protected]>
Reviewed-by: Stefano Babic <[email protected]>
Reviewed-by: Łukasz Majewski <[email protected]>
| -rw-r--r-- | common/spl/Kconfig | 6 | ||||
| -rw-r--r-- | common/spl/Makefile | 1 | ||||
| -rw-r--r-- | common/spl/spl_sdp.c | 37 | ||||
| -rw-r--r-- | drivers/usb/gadget/Makefile | 1 |
4 files changed, 45 insertions, 0 deletions
diff --git a/common/spl/Kconfig b/common/spl/Kconfig index 582b685dad3..9446cd9b42e 100644 --- a/common/spl/Kconfig +++ b/common/spl/Kconfig @@ -668,6 +668,12 @@ config SPL_DFU_RAM endchoice +config SPL_USB_SDP_SUPPORT + bool "Support SDP (Serial Download Protocol)" + help + Enable Serial Download Protocol (SDP) device support in SPL. This + allows to download images into memory and execute (jump to) them + using the same protocol as implemented by the i.MX family's boot ROM. endif config SPL_WATCHDOG_SUPPORT diff --git a/common/spl/Makefile b/common/spl/Makefile index fde0d09a5a9..e229947b53b 100644 --- a/common/spl/Makefile +++ b/common/spl/Makefile @@ -30,4 +30,5 @@ obj-$(CONFIG_$(SPL_TPL_)SATA_SUPPORT) += spl_sata.o obj-$(CONFIG_$(SPL_TPL_)DFU_SUPPORT) += spl_dfu.o obj-$(CONFIG_$(SPL_TPL_)SPI_LOAD) += spl_spi.o obj-$(CONFIG_$(SPL_TPL_)RAM_SUPPORT) += spl_ram.o +obj-$(CONFIG_$(SPL_TPL_)USB_SDP_SUPPORT) += spl_sdp.o endif diff --git a/common/spl/spl_sdp.c b/common/spl/spl_sdp.c new file mode 100644 index 00000000000..350bcdb0569 --- /dev/null +++ b/common/spl/spl_sdp.c @@ -0,0 +1,37 @@ +/* + * (C) Copyright 2016 Toradex + * Author: Stefan Agner <[email protected]> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <spl.h> +#include <usb.h> +#include <g_dnl.h> +#include <sdp.h> + +DECLARE_GLOBAL_DATA_PTR; + +static int spl_sdp_load_image(struct spl_image_info *spl_image, + struct spl_boot_device *bootdev) +{ + int ret; + const int controller_index = 0; + + g_dnl_clear_detach(); + g_dnl_register("usb_dnl_sdp"); + + ret = sdp_init(controller_index); + if (ret) { + error("SDP init failed: %d", ret); + return -ENODEV; + } + + /* This command typically does not return but jumps to an image */ + sdp_handle(controller_index); + error("SDP ended"); + + return -EINVAL; +} +SPL_LOAD_IMAGE_METHOD("USB SDP", 0, BOOT_DEVICE_BOARD, spl_sdp_load_image); diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile index 6a007d1bcb6..7258099c1cf 100644 --- a/drivers/usb/gadget/Makefile +++ b/drivers/usb/gadget/Makefile @@ -11,6 +11,7 @@ obj-$(CONFIG_USB_ETHER) += epautoconf.o config.o usbstring.o ifdef CONFIG_SPL_BUILD obj-$(CONFIG_SPL_USB_GADGET_SUPPORT) += g_dnl.o obj-$(CONFIG_SPL_DFU_SUPPORT) += f_dfu.o +obj-$(CONFIG_SPL_USB_SDP_SUPPORT) += f_sdp.o endif # new USB gadget layer dependencies |