Need help adding Falcon Mode patch in Yocto

[richhackl]

 I am trying to add  Falcon Mode to an existing IMX6 Yocto project  (imx_v2015.04.4.1.15_1.2.0_ga). I have added a u-boot patch referenced in Diego Dorta's blog (Link: How to decrease boot time on iMX6 - i.MXDev Blog ).

In the patch the MENU_BUTTON is used to select falcon mode vs u-boot:

Falcon Mode Patch

From 0833cfaa104d226ec9ea64c7fdabba29d59659e5 Mon Sep 17 00:00:00 2001 From: rhackl <rich.hackl@creationtech.com> Date: Fri, 29 Jun 2018 13:03:15 -0500 Subject: [PATCH] mx6sabresd.c (patch) --- board/freescale/mx6sxsabresd/mx6sxsabresd.c | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) diff --git a/board/freescale/mx6sxsabresd/mx6sxsabresd.c b/board/freescale/mx6sxsabresd/mx6sxsabresd.c index 3b238e7..a4c4067 100644 --- a/board/freescale/mx6sxsabresd/mx6sxsabresd.c +++ b/board/freescale/mx6sxsabresd/mx6sxsabresd.c @@ -90,6 +90,9 @@ DECLARE_GLOBAL_DATA_PTR; PAD_CTL_PUS_47K_UP | PAD_CTL_SPEED_LOW | \ PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS) +#define MENU_BUTTON IMX_GPIO_NR(6, 18) +#define MOTOR_START IMX_GPIO_NR(6, 16) + int dram_init(void) { gd->ram_size = PHYS_SDRAM_SIZE; @@ -120,7 +123,7 @@ static iomux_v3_cfg_t const usdhc3_pads[] = { MX6_PAD_SD3_DATA3__USDHC3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL), MX6_PAD_SD3_DATA4__USDHC3_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL), MX6_PAD_SD3_DATA5__USDHC3_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL), - MX6_PAD_SD3_DATA6__USDHC3_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD3_DATA6__GPIO6_IO18 | MUX_PAD_CTRL(NO_PAD_CTRL), MX6_PAD_SD3_DATA7__USDHC3_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL), /* CD pin */ @@ -1081,6 +1084,20 @@ static struct mx6_ddr3_cfg mem_ddr = { .trasmin = 3500, }; +#ifdef CONFIG_SPL_OS_BOOT +int spl_start_uboot(void) +{ + gpio_direction_output(MOTOR_START,0); + gpio_direction_input(MENU_BUTTON); + + gpio_set_value(MOTOR_START,gpio_get_value(MENU_BUTTON)); + + /* Only enter in Falcon mode if KEY_VOL_UP is pressed */ + return !gpio_get_value(MENU_BUTTON); + return 0; +} +#endif + static void ccgr_init(void) { struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR; -- 1.9.1

I also added a patch for mx6solosabresd_defconfig to enable SPL, etc:

mx6solosabresd_defconfig patch

From 2fe3ff5179a47a7ca5967b878a8946942c3ad760 Mon Sep 17 00:00:00 2001 From: rhackl <rich.hackl@creationtech.com> Date: Fri, 29 Jun 2018 16:01:34 -0500 Subject: [PATCH] mx6solosabresd_defconfig --- configs/mx6solosabresd_defconfig | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/configs/mx6solosabresd_defconfig b/configs/mx6solosabresd_defconfig index f3ce9f4..7dfb3db 100644 --- a/configs/mx6solosabresd_defconfig +++ b/configs/mx6solosabresd_defconfig @@ -5,3 +5,8 @@ CONFIG_SYS_MALLOC_F=y CONFIG_SYS_MALLOC_F_LEN=0x400 CONFIG_DM=y CONFIG_DM_THERMAL=y + +CONFIG_SPL=y +#CONFIG_SPL_BUILD=y +#CONFIG_SPL_OS_BUILD=y +CONFIG_CMD_SPL=y -- 1.9.1

I have also set SPL_BINARY = "SPL" in u-boot.inc.

The problem is that Yocto does not build or deploy SPL and I get errors such as "mx6solosabresd_defconfig/SPL - no such directory". I have confirmed that the "SPL EXPORT" command does get built, however SPL.c itself always fails to build during the bitbake "package u-boot-imx" command.

Typical bitbake commands to rebuild
bitbake -c clean u-boot-imx bitbake -c clean linux-imx bitbake -v -D -f -c compile linux-imx bitbake -v -D -f -c package u-boot-imx                                ###errors occur here bitbake -v -D -f -c deploy u-boot-imx bitbake -v _D -f -c rootfs humboldt-image

Am I missing something simple here? What is the correct way to tell Yocto to build and include SPL in the u-boot image?

[jimmychan]

Have you build by typing this "bitbake u-boot-imx"?

[richhackl]

Yes, I essentially use variations of the following list of commands for rebuilding u-boot:

bitbake -c clean u-boot-imx
bitbake -v -D -f -c package u-boot-imx                                ###errors occur here

bitbake -v -D -f -c deploy u-boot-imx

bitbake -v _D -f -c rootfs humboldt-image

NOTE: since my previous post I have determined that the following #defines need to be in the board header file (mx6sabresd.h) and not in the defconfig file:

#define CONFIG_SPL_BUILD=y
#define CONFIG_SPL_OS_BUILD=y
#define CONFIG_CMD_SPL=y

I can build v2015_04 u-boot with SPL using the toolchain but I still can not direct bitbake recipes to build SPL.

I did find that in the poky u-boot.inc recipe include file, there is no script to support the compile of SPL - there is only script to install and deploy SPL. 

Rich