Problem on imx: add rom api support on imx8mn

[Michael Nazzareno Trimarchi]

Hi all

I have some problems that I have understood and fixed but I can not
explain. Right now I have on imx8mn that can boot from boot0 or boot1
partition after remove
a condition in the is_boot_from_stream_device

This is a boot from mmcblk0boot0 with some debug

U-Boot SPL 2020.04-5.4.70-2.3.2+gf3bcbdfc62 (Jul 03 2021 - 17:00:27 +0000)
power_bd71837_init
DDRINFO: start DRAM init
DDRINFO: DRAM rate 1600MTS
DDRINFO:ddrphy calibration done
DDRINFO: ddrmix config done
Normal Boot
Trying to boot from BOOTROM
ROM API interface 2 from boot 131073

Interface is 2 MMC and boot is 131073 and according to this

static int is_boot_from_stream_device(u32 boot)
+{
+       u32 interface;
+
+       interface = boot >> 16;
+       if (interface >= BT_DEV_TYPE_USB)
+               return 1;
+
+       if (interface == BT_DEV_TYPE_MMC && (boot & 1))
+               return 1;
+
+       return 0;
+}

means a stream interface but it does not boot.

Boot from boot1 give 131072 that is boot1 this let device boot because
is_boot_from_stream_device is 0 and
romapi use spl_romapi_load_image_seekable

Remove boot & 1 condition let me boot from mmcblk0boot0 and
mmcblk0boot1 without any problem

mmc partconf 0
EXT_CSD[179], PARTITION_CONFIG:
BOOT_ACK: 0x0
BOOT_PARTITION_ENABLE: 0x1
PARTITION_ACCESS: 0x0

and the board was fused already.

Any idea why?

Michael