From f78d348cb8a4f5f69a80f914e84eabd8663783a3 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Mon, 4 Jun 2012 10:59:23 +0000 Subject: [PATCH] tegra: bootcmd: start USB only when needed Instead of initializing USB as soon as bootcmd is executed, defer it until the first boot device that (potentially in the case of network) uses USB is scanned. This avoids initializing USB when booting from MMC, so speeds that up. Signed-off-by: Stephen Warren Signed-off-by: Tom Warren --- include/configs/tegra2-common-post.h | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/include/configs/tegra2-common-post.h b/include/configs/tegra2-common-post.h index 85b037c..80d9c35 100644 --- a/include/configs/tegra2-common-post.h +++ b/include/configs/tegra2-common-post.h @@ -58,24 +58,33 @@ #endif #ifdef CONFIG_CMD_USB +#define BOOTCMD_INIT_USB "run usb_init; " #define BOOTCMDS_USB \ + "usb_init=" \ + "if ${usb_need_init}; then " \ + "set usb_need_init false; " \ + "usb start 0; " \ + "fi\0" \ + \ "usb_boot=" \ "setenv devtype usb; " \ + BOOTCMD_INIT_USB \ "if usb dev ${devnum}; then " \ "run scan_boot; " \ "fi\0" \ + \ "bootcmd_usb0=setenv devnum 0; run usb_boot;\0" #define BOOT_TARGETS_USB "usb0" -#define BOOTCMD_INIT_USB "usb start 0; " #else +#define BOOTCMD_INIT_USB "" #define BOOTCMDS_USB "" #define BOOT_TARGETS_USB "" -#define BOOTCMD_INIT_USB "" #endif #ifdef CONFIG_CMD_DHCP #define BOOTCMDS_DHCP \ "bootcmd_dhcp=" \ + BOOTCMD_INIT_USB \ "if dhcp ${scriptaddr} boot.scr.uimg; then "\ "source ${scriptaddr}; " \ "fi\0" @@ -127,7 +136,6 @@ BOOTCMDS_DHCP #define CONFIG_BOOTCOMMAND \ - BOOTCMD_INIT_USB \ "for target in ${boot_targets}; do run bootcmd_${target}; done" #endif -- 2.7.4