On Thu, Apr 21, 2022 at 11:06 AM Fabio Estevam festevam@gmail.com wrote:
From: Fabio Estevam festevam@denx.de
When trying to boot via USB on i.MX8MN it is necessary to specify the U-Boot environment location, otherwise the boot process simply hangs.
Specify the environment location when booting from USB.
Tested on a imx8mn-evk.
Suggested-by: Michael Nazzareno Trimarchi michael@amarulasolutions.com Signed-off-by: Fabio Estevam festevam@denx.de
Changes since v2:
- Handle explicitly the CONFIG_ENV_IS_NOWHERE case and return
ENVL_UNKNOWN as fallback (Marek).
arch/arm/mach-imx/imx8m/soc.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/arch/arm/mach-imx/imx8m/soc.c b/arch/arm/mach-imx/imx8m/soc.c index 7059d87e336b..34a07b53e57a 100644 --- a/arch/arm/mach-imx/imx8m/soc.c +++ b/arch/arm/mach-imx/imx8m/soc.c @@ -1536,6 +1536,16 @@ enum env_location arch_env_get_location(enum env_operation op, int prio) return ENVL_UNKNOWN;
switch (dev) {
case USB_BOOT:if (IS_ENABLED(CONFIG_ENV_IS_IN_SPI_FLASH))return ENVL_SPI_FLASH;if (IS_ENABLED(CONFIG_ENV_IS_IN_NAND))return ENVL_NAND;if (IS_ENABLED(CONFIG_ENV_IS_IN_MMC))return ENVL_MMC;if (IS_ENABLED(CONFIG_ENV_IS_NOWHERE))return ENVL_NOWHERE;return ENVL_UNKNOWN; case QSPI_BOOT: case SPI_NOR_BOOT: if (IS_ENABLED(CONFIG_ENV_IS_IN_SPI_FLASH))-- 2.25.1
Fabio,
Thanks - this at least allows me to boot on imx8mp-venice-gw74xx without needing to enable CONFIG_ENV_IS_NOWHERE.
I do however notice when I do so env is attempted to load from MMC dev 0 (CONFIG_ENV_IS_IN_MMC=y) - what controls the device number in this case as for this board, the emmc is dev 2.
U-Boot SPL 2022.04-00073-g9d2b56e8338a (Apr 25 2022 - 12:35:37 -0700) DRAM : LPDDR4 4 GiB WDT: Started watchdog@30280000 with servicing (60s timeout) Trying to boot from BOOTROM Find img info 0x48025c00, size 1396 Need continue download 1024 DTB : imx8mp-venice-gw74xx Download 873624, Total size 875672 NOTICE: BL31: v2.4(release):f884ad7b0ba2 NOTICE: BL31: Built : 14:00:19, Mar 17 2022
U-Boot 2022.04-00073-g9d2b56e8338a (Apr 25 2022 - 12:35:37 -0700)
CPU: Freescale i.MX8MP[8] rev1.1 1600 MHz (running at 1200 MHz) CPU: Industrial temperature grade (-40C to 105C) at 46C Reset cause: POR Model: Gateworks Venice GW74xx i.MX8MP board DRAM: 4 GiB clk_register: failed to get osc_32k device (parent of usb_root_clk) Core: 211 devices, 24 uclasses, devicetree: separate WDT: Started watchdog@30280000 with servicing (60s timeout) MMC: FSL_SDHC: 2 Loading Environment from MMC... MMC Device 0 not found *** Warning - No MMC card found, using default environment
In: serial@30890000 Out: serial@30890000 Err: serial@30890000 Net: KSZ9897S: eth2: lan1, eth3: lan2, eth4: lan3, eth5: lan4, eth6: lan5, eth1: ethernet@30be0000, eth0: ethernet@30bf0000
Best Regards,
Tim