> -----Original Message----- > From: Marek Vasut <[email protected]> > Sent: 16 September 2025 14:29 > To: Mathieu Othacehe <[email protected]>; [email protected]; Biju Das > <[email protected]>; Chris > Paterson <[email protected]> > Cc: [email protected]; [email protected] > Subject: Re: RZG2L and DTB blob from TF-A > > On 9/16/25 2:49 PM, Mathieu Othacehe wrote: > > > > Hello, > > +CC Biju, Chris > > > I am working on the RZG2L devkit from Renesas and trying to get the > > mainline U-Boot working there. > > > > I have noticed that in several locations, U-Boot is unconditionally > > expecting the TF-A to pass a DTB blob: > > > > In board/renesas/rzg2l/rzg2l.c: > > > > --8<---------------cut here---------------start------------->8--- > > static void apply_atf_overlay(void *fdt_blob) { > > void *atf_fdt_blob = (void *)(rcar_atf_boot_args[1]); > > ... > > } > > --8<---------------cut here---------------end--------------->8--- > > > > In arch/arm/mach-renesas/cpu_info-rzg2l.c: > > > > --8<---------------cut here---------------start------------->8--- > > static const struct tfa_info *get_tfa_info(void) { > > void *atf_fdt_blob = (void *)(rcar_atf_boot_args[1]); > > ... > > } > > --8<---------------cut here---------------end--------------->8--- > > > > Now, the TF-A that I have compiled (v2.5/rzg2l-1.00-43-g950d6a6b9) > > from https://github.com/renesas-rz/rzg_trusted-firmware-a.git is not > > passing any DTB blob: > > > > --8<---------------cut here---------------start------------->8--- > > INFO: BL31: Preparing for EL3 exit to normal world > > INFO: Entry point address = 0x50000000 > > INFO: SPSR = 0x3c5 > > VERBOSE: Argument #0 = 0x0 > > VERBOSE: Argument #1 = 0x0 > > VERBOSE: Argument #2 = 0x0 > > VERBOSE: Argument #3 = 0x0 > > VERBOSE: Argument #4 = 0x0 > > VERBOSE: Argument #5 = 0x0 > > VERBOSE: Argument #6 = 0x0 > > VERBOSE: Argument #7 = 0x0 > > --8<---------------cut here---------------end--------------->8--- > > > > That results in dereferencing a NULL pointer and failing to run U-Boot > > on that platform. On the other hand, disabling the two pieces of code > > mentioned below is enough to have a working U-Boot. > > > > It does not seem that the upstream TF-A has support for the RZG2L CPU. > > So my question is, what is the expected TF-A branch / repository that > > is meant to be used together with the renesas_rzg2l_smarc_defconfig > > U-Boot configuration? > > > > Thanks in advance, > > Software versions would be good to include, U-Boot version, TFA version.
Use the commit 72c86c0af01e007b5542f39823d9e6140937b439 plat: renesas: rz: Disable unused CRYPTO_SUPPORT Also, you need a patch to identify the device and pass it as blob to the mainline u-boot On TF-A: .ep_info.args.arg1 = (uintptr_t)fdt_blob, Also you should fill the memory blob(fdt_blob). Hope you can take over from here. Cheers, Biju
