board: toradex: aquila-am69: add remoteproc firmware pre-loading

Some use cases require remoteproc firmware to be loaded before Linux
boots. Introduce rprocsemmcboot and rproc_fw_binaries to load the
remoteproc cores from U-Boot, relying on the TI k3_rproc framework
which already handles the secure firmware variants, firmware loading,
and proper initialization.

The firmware binaries are expected to be present in the eMMC rootfs
under /lib/firmware/.

To activate, run rprocsemmcboot or add it to bootcmd:
  bootcmd=run rprocsemmcboot; bootflow scan -b

The upstream U-Boot does not yet have the remoteproc DT nodes enabled
for the Aquila AM69, making firmware loading fail. Marking as pending
waiting for remoteproc enabling, which could happen along with the
OF_UPSTREAM migration.

Signed-off-by: Vitor Soares <vitor.soares@toradex.com>
Acked-by: Francesco Dolcini <francesco.dolcini@toradex.com>

diff --git a/board/toradex/aquila-am69/aquila-am69.env b/board/toradex/aquila-am69/aquila-am69.env
index f8b7363dcf51e4a1bca1d452425e4e40f827fe5e..d61898091aa91c21c74a04f4cc6b4c5ff355dcff 100644 (file)
--- a/board/toradex/aquila-am69/aquila-am69.env
+++ b/board/toradex/aquila-am69/aquila-am69.env
@@ -1,3 +1,5 @@
+#include <env/ti/k3_rproc.env>
+
 #define CFG_RAMDISK_ADDR_R             0x90300000
 #define CFG_SCRIPTADDR                 0x90280000
 
@@ -39,3 +41,22 @@ update_uboot=
                        setexpr blkcnt ${filesize} + 0x1ff && setexpr blkcnt ${blkcnt} / 0x200;
                        mmc dev 0 1; mmc write ${loadaddr} 0x1400 ${blkcnt};
                fi
+
+rprocsemmcboot=
+       env set boot mmc;
+       env set bootpart 0:2;
+       rproc init;
+       run boot_rprocs_mmc;
+       env set bootpart;
+
+rproc_fw_binaries= \
+       2 /lib/firmware/j784s4-main-r5f0_0-fw \
+       3 /lib/firmware/j784s4-main-r5f0_1-fw \
+       4 /lib/firmware/j784s4-main-r5f1_0-fw \
+       5 /lib/firmware/j784s4-main-r5f1_1-fw \
+       6 /lib/firmware/j784s4-main-r5f2_0-fw \
+       7 /lib/firmware/j784s4-main-r5f2_1-fw \
+       8 /lib/firmware/j784s4-c71_0-fw \
+       9 /lib/firmware/j784s4-c71_1-fw \
+       10 /lib/firmware/j784s4-c71_2-fw \
+       11 /lib/firmware/j784s4-c71_3-fw