Since OCRAM is only 192K this introduces CONFIG_ZYNQ_BUILD_FSBL so we can can chainload a more feature rich barebox via bootm.
>From 1f1a95eca42198d73c38cc12b9b44f061980cef8 Mon Sep 17 00:00:00 2001
From: Michael Graichen <michael.graichen@xxxxxxxxxxx>
Date: Mon, 3 May 2021 12:03:05 +0200
Subject: [PATCH] zynq: add support to chainload another barebox
Signed-off-by: Michael Graichen <michael.graichen@xxxxxxxxxxx>
---
arch/arm/mach-zynq/Kconfig | 6 +++++-
images/Makefile.zynq | 21 +++++++++++++++------
2 files changed, 20 insertions(+), 7 deletions(-)
diff --git a/arch/arm/mach-zynq/Kconfig b/arch/arm/mach-zynq/Kconfig
index 3e07633e5..0800b55e6 100644
--- a/arch/arm/mach-zynq/Kconfig
+++ b/arch/arm/mach-zynq/Kconfig
@@ -21,7 +21,11 @@ config ARCH_ZYNQ7000
select OFDEVICE
select RELOCATABLE
-
+config ZYNQ_BUILD_FSBL
+ prompt "build FSBL binary (BOOT.BIN)"
+ bool
+ help
+ Say Y here if you want to build an FSBL binary for the Zynq.
menu "select Zynq boards to be built"
diff --git a/images/Makefile.zynq b/images/Makefile.zynq
index b00e74869..39c72bd88 100644
--- a/images/Makefile.zynq
+++ b/images/Makefile.zynq
@@ -7,17 +7,26 @@ zynqcfg_cpp_flags = -Wp,-MD,$(depfile) -nostdinc -x assembler-with-cpp \
zynqcfg-tmp = $(subst $(comma),_,$(dot-target).zynqcfg.tmp)
-quiet_cmd_zynq_image = ZYNQIMG $@
+quiet_cmd_zynq_image = ZYNQIMG $@
cmd_zynq_image = \
$(CPP) $(zynqcfg_cpp_flags) -o $(zynqcfg-tmp) $(CFG_$(@F)) ; \
$(objtree)/scripts/zynq_mkimage -c $(zynqcfg-tmp) \
- -f $(subst .zynqimg,,$@) -o $@
+ -f $(subst .zynqimg_fsbl,,$@) -o $@
-$(obj)/%.zynqimg: $(obj)/% FORCE
+$(obj)/%.zynqimg_fsbl: $(obj)/% FORCE
$(call if_changed,zynq_image)
#------------------------------------------------------------------------------
-CFG_start_avnet_zedboard.pblb.zynqimg = $(board)/avnet-zedboard/zedboard.zynqcfg
-FILE_barebox-avnet-zedboard.img = start_avnet_zedboard.pblb.zynqimg
-image-$(CONFIG_MACH_ZEDBOARD) += barebox-avnet-zedboard.img
+FILE_barebox-avnet-zedboard.img = start_avnet_zedboard.pblb
+zynq-barebox-$(CONFIG_MACH_ZEDBOARD) += barebox-avnet-zedboard.img
+
+CFG_start_avnet_zedboard.pblb.zynqimg_fsbl = $(board)/avnet-zedboard/zedboard.zynqcfg
+FILE_barebox-avnet-zedboard-fsbl.img = start_avnet_zedboard.pblb.zynqimg_fsbl
+zynq-fsbl-$(CONFIG_MACH_ZEDBOARD) += barebox-avnet-zedboard-fsbl.img
+
+ifdef CONFIG_ZYNQ_BUILD_FSBL
+image-y += $(zynq-fsbl-y)
+else
+image-y += $(zynq-barebox-y)
+endif
--
2.25.1
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