When the `dfu` command is called from the U-Boot environment, it now accepts an optional parameter that specifies a timeout (in seconds). If a DFU connection is not made within that time the `dfu` command exits (as it would if Ctrl+C was pressed). If the timeout is left empty or being zero the `dfu` command behaves as it does now.
This is useful for allowing U-Boot to check to see if anything wants to upload new firmware before continuing to boot. The patch is based on the commit https://github.com/01org/edison-u-boot/commit/5e966ccc3c65c18c9783741fa04e0c45e021780c by Sebastien Colleur, which has been heavily reworked due to U-Boot changes in the past. Signed-off-by: Brad Campbell <brad...@gmail.com> Signed-off-by: Andy Shevchenko <andriy.shevche...@linux.intel.com> --- v2: - add documentation part (Lukasz) - drop original author's SoB due to bouncing email, give credit in the commit message anyway cmd/dfu.c | 15 +++++++++++++-- common/dfu.c | 17 +++++++++++++++++ doc/README.dfu | 8 ++++++-- drivers/dfu/Kconfig | 6 ++++++ drivers/dfu/dfu.c | 15 +++++++++++++++ include/dfu.h | 5 +++++ 6 files changed, 62 insertions(+), 4 deletions(-) diff --git a/cmd/dfu.c b/cmd/dfu.c index 14a8ec879e..b30f8a5667 100644 --- a/cmd/dfu.c +++ b/cmd/dfu.c @@ -30,7 +30,7 @@ static int do_dfu(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) #if defined(CONFIG_DFU_OVER_USB) || defined(CONFIG_DFU_OVER_TFTP) char *interface = NULL; char *devstring = NULL; -#if defined(CONFIG_DFU_OVER_TFTP) +#if defined(CONFIG_DFU_TIMEOUT) || defined(CONFIG_DFU_OVER_TFTP) unsigned long value = 0; #endif @@ -39,7 +39,7 @@ static int do_dfu(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) devstring = argv[3]; } -#if defined(CONFIG_DFU_OVER_TFTP) +#if defined(CONFIG_DFU_TIMEOUT) || defined(CONFIG_DFU_OVER_TFTP) if (argc == 5 || argc == 3) value = simple_strtoul(argv[argc - 1], NULL, 0); #endif @@ -55,6 +55,10 @@ static int do_dfu(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) if (ret) goto done; +#ifdef CONFIG_DFU_TIMEOUT + dfu_set_timeout(value * 1000); +#endif + ret = CMD_RET_SUCCESS; if (strcmp(argv[argc - 1], "list") == 0) { dfu_show_entities(); @@ -75,10 +79,17 @@ U_BOOT_CMD(dfu, CONFIG_SYS_MAXARGS, 1, do_dfu, "Device Firmware Upgrade", "" #ifdef CONFIG_DFU_OVER_USB +#ifdef CONFIG_DFU_TIMEOUT + "<USB_controller> [<interface> <dev>] [<timeout>] [list]\n" +#else "<USB_controller> [<interface> <dev>] [list]\n" +#endif " - device firmware upgrade via <USB_controller>\n" " on device <dev>, attached to interface\n" " <interface>\n" +#ifdef CONFIG_DFU_TIMEOUT + " [<timeout>] - specify inactivity timeout in seconds\n" +#endif " [list] - list available alt settings\n" #endif #ifdef CONFIG_DFU_OVER_TFTP diff --git a/common/dfu.c b/common/dfu.c index 44d1484d3d..da6289b218 100644 --- a/common/dfu.c +++ b/common/dfu.c @@ -35,6 +35,10 @@ int run_usb_dnl_gadget(int usbctrl_index, char *usb_dnl_gadget) return CMD_RET_FAILURE; } +#ifdef CONFIG_DFU_TIMEOUT + unsigned long start_time = get_timer(0); +#endif + while (1) { if (g_dnl_detach()) { /* @@ -79,6 +83,19 @@ int run_usb_dnl_gadget(int usbctrl_index, char *usb_dnl_gadget) } } +#ifdef CONFIG_DFU_TIMEOUT + unsigned long wait_time = dfu_get_timeout(); + + if (wait_time) { + unsigned long current_time = get_timer(start_time); + + if (current_time > wait_time) { + debug("Inactivity timeout, abort DFU\n"); + goto exit; + } + } +#endif + WATCHDOG_RESET(); usb_gadget_handle_interrupts(usbctrl_index); } diff --git a/doc/README.dfu b/doc/README.dfu index 558d347c26..caf1c9998c 100644 --- a/doc/README.dfu +++ b/doc/README.dfu @@ -43,6 +43,7 @@ Configuration Options: CONFIG_DFU_RAM CONFIG_DFU_SF CONFIG_DFU_SF_PART + CONFIG_DFU_TIMEOUT CONFIG_DFU_VIRTUAL CONFIG_CMD_DFU @@ -70,12 +71,15 @@ Commands: dfu <USB_controller> [<interface> <dev>] list list the alternate device defined in "dfu_alt_info" - dfu <USB_controller> [<interface> <dev>] + dfu <USB_controller> [<interface> <dev>] [<timeout>] start the dfu stack on the USB instance with the selected medium backend and use the "dfu_alt_info" variable to configure the alternate setting and link each one with the medium The dfu command continue until receive a ^C in console or - a DFU detach transaction from HOST. + a DFU detach transaction from HOST. If CONFIG_DFU_TIMEOUT option + is enabled and <timeout> parameter is present in the command line, + the DFU operation will be aborted automatically after <timeout> + seconds of waiting remote to initiate DFU session. The possible values of <interface> are : (with <USB controller> = 0 in the dfu command example) diff --git a/drivers/dfu/Kconfig b/drivers/dfu/Kconfig index 9fe5bc0f58..e070130b5a 100644 --- a/drivers/dfu/Kconfig +++ b/drivers/dfu/Kconfig @@ -23,6 +23,12 @@ config DFU_TFTP Detailed description of this feature can be found at ./doc/README.dfutftp +config DFU_TIMEOUT + bool "Timeout waiting for DFU" + help + This option adds an optional timeout parameter for DFU which, if set, + will cause DFU to only wait for that many seconds before exiting. + config DFU_MMC bool "MMC back end for DFU" help diff --git a/drivers/dfu/dfu.c b/drivers/dfu/dfu.c index 38aecd3a05..df50196dfd 100644 --- a/drivers/dfu/dfu.c +++ b/drivers/dfu/dfu.c @@ -21,6 +21,9 @@ static LIST_HEAD(dfu_list); static int dfu_alt_num; static int alt_num_cnt; static struct hash_algo *dfu_hash_algo; +#ifdef CONFIG_DFU_TIMEOUT +static unsigned long dfu_timeout = 0; +#endif /* * The purpose of the dfu_flush_callback() function is to @@ -58,6 +61,18 @@ __weak bool dfu_usb_get_reset(void) #endif } +#ifdef CONFIG_DFU_TIMEOUT +void dfu_set_timeout(unsigned long timeout) +{ + dfu_timeout = timeout; +} + +unsigned long dfu_get_timeout(void) +{ + return dfu_timeout; +} +#endif + static int dfu_find_alt_num(const char *s) { int i = 0; diff --git a/include/dfu.h b/include/dfu.h index 2e3e91c8d2..fb5260d903 100644 --- a/include/dfu.h +++ b/include/dfu.h @@ -178,6 +178,11 @@ unsigned char *dfu_free_buf(void); unsigned long dfu_get_buf_size(void); bool dfu_usb_get_reset(void); +#ifdef CONFIG_DFU_TIMEOUT +unsigned long dfu_get_timeout(void); +void dfu_set_timeout(unsigned long); +#endif + int dfu_read(struct dfu_entity *de, void *buf, int size, int blk_seq_num); int dfu_write(struct dfu_entity *de, void *buf, int size, int blk_seq_num); int dfu_flush(struct dfu_entity *de, void *buf, int size, int blk_seq_num); -- 2.24.0 _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
