Hello,

I am using the imx93-var-som_defconfig configuration on commit v2024.04-rc1. When producing signed or unsigned images on an unclosed board everything works fine.

However, once the board is closed (ahab_close command is issued), u-boot hangs this way:

--8<---------------cut here---------------start------------->8--- U-Boot SPL 2024.04-rc1-00004-g8494a62b246-dirty (Feb 06 2024 - 15:24:49 +0100) SOC: 0xa0009300 LC: 0x40040 M33 prepare ok Normal Boot Trying to boot from BOOTROM Boot Stage: USB boot NOTICE: BL31: v2.6(release):d8bc791fb NOTICE: BL31: Built : 18:11:44, Mar 15 2023

U-Boot 2024.04-rc1-00004-g8494a62b246-dirty (Feb 06 2024 - 15:24:49 +0100)

U-Boot code: 80200000 -> 802B4328 BSS: -> 802BA420 CPU: i.MX93 rev1.0 Model: Variscite VAR-SOM-MX93 on Symphony evaluation board DRAM: Monitor len: 000BA420 Ram size: 80000000 Ram top: 100000000 Reserving 745k for U-Boot at: fff25000 Reserving 32784k for malloc() at: fdf21000 Reserving 152 Bytes for Board Info at: fdf20f60 Reserving 480 Bytes for Global Data at: fdf20d80 Reserving 24832 Bytes for FDT at: fdf1ac80

RAM Configuration: Bank #0: 80000000 2 GiB Bank #1: 0 0 Bytes

DRAM: 2 GiB New Stack Pointer is: fdf1ac70 Relocation Offset is: 7fd25000 Relocating to fff25000, new gd at fdf20d80, sp at fdf1ac70 Added memory mapping (5): 80000000 80000000 Pre-reloc malloc() used 0x17478 bytes (93 KB) before mem_malloc_init --8<---------------cut here---------------end--------------->8---

It seems that signature checking is OK because both the SPL and regular u-boot are started. However, something seems to cause u-boot to hang.

Here I am hanging in initr_malloc function, right in the mem_malloc_init call:

--8<---------------cut here---------------start------------->8--- static int initr_malloc(void) { ulong start;

#if CONFIG_IS_ENABLED(SYS_MALLOC_F) debug("Pre-reloc malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr, gd->malloc_ptr / 1024); #endif /* The malloc area is immediately below the monitor copy in DRAM */ /* * This value MUST match the value of gd->start_addr_sp in board_f.c: * reserve_noncached(). */ start = gd->relocaddr - TOTAL_MALLOC_LEN; gd_set_malloc_start(start); debug("before mem_malloc_init\n"); mem_malloc_init((ulong)map_sysmem(start, TOTAL_MALLOC_LEN), TOTAL_MALLOC_LEN);

debug("after mem_malloc_init\n"); return 0; } --8<---------------cut here---------------end--------------->8---

If I add initcall traces, then I'm not going that far:

--8<---------------cut here---------------start------------->8--- U-Boot SPL 2024.04-rc1-00004-g8494a62b246-dirty (Feb 06 2024 - 15:06:54 +0100) SOC: 0xa0009300 LC: 0x40040 M33 prepare ok Normal Boot Trying to boot from BOOTROM Boot Stage: USB boot NOTICE: BL31: v2.6(release):d8bc791fb NOTICE: BL31: Built : 18:11:44, Mar 15 2023 initcall: 000000008027189c

U-Boot 2024.04-rc1-00004-g8494a62b246-dirty (Feb 06 2024 - 15:06:54 +0100)

initcall: 000000008022481c U-Boot code: 80200000 -> 802B43C0 BSS: -> 802BA4A0 initcall: 0000000080224654 initcall: 0000000080203844 CPU: i.MX93 rev1.0 initcall: 0000000080224fdc Model: Variscite VAR-SOM-MX93 on Symphony evaluation board initcall: event 8/(unknown) initcall: 0000000080224850 DRAM: initcall: 00000000802035a8 initcall: 0000000080224bb8 Monitor len: 000BA4A0 Ram size: 80000000 Ram top: 100000000 initcall: 0000000080224640 initcall: 00000000802248b8 initcall: 0000000080202e24 initcall: 00000000802248c0 initcall: 00000000802248c8 initcall: 00000000802247b4 Reserving 745k for U-Boot at: fff25000 initcall: 0000000080224968 Reserving 32784k for malloc() at: fdf21000 initcall: 0000000080224908 Reserving 152 Bytes for Board Info at: fdf20f60 initcall: 00000000802249a8 Reserving 480 Bytes for Global Data at: fdf20d80 initcall: 0000000080224744 Reserving 24832 Bytes for FDT at: fdf1ac80 initcall: 00000000802248d0 initcall: 00000000802248d8 initcall: 00000000802248f8 initcall: 0000000080224c30 initcall: 00000000802035e0 initcall: 00000000802249ec

RAM Configuration: Bank #0: 80000000 2 GiB Bank #1: 0 0 Bytes

DRAM: 2 GiB initcall: 0000000080224c44 initcall: 0000000080224720 New Stack Pointer is: fdf1ac70 initcall: 000000008022465c initcall: 00000000802248e0 initcall: 00000000802248e8 initcall: 00000000802246a0 Relocation Offset is: 7fd25000 Relocating to fff25000, new gd at fdf20d80, sp at fdf1ac70 initcall: 0000000080224900 initcall: 0000000080227704 initcall: 00000000fff49c8c initcall: 00000000fff49c94 initcall: 00000000fff4c8c0 initcall: 00000000fff49f54 Added memory mapping (5): 80000000 80000000 initcall: 00000000fff49f04 initcall: 00000000fff49f74 initcall: 00000000fff49ea4 Pre-r --8<---------------cut here---------------end--------------->8---

and I am stopping in the process of writing the "Pre-reloc ..." trace.

All-in-all, fusing the board seems to change something causing the previously working images (on a non-closed board) to stop working.

Does it ring a bell to anyone?

Thanks,

Mathieu