[PATCH] lib: utils: Mark only the largest region as reserved in FDT

[wangliu]

Hi,
I am trying to generate a fw_payload.bin, but the mainline opensbi 
failed to compile.
I have retried the operation in the newly installed system environment, 
please do let me know if more info are to be provided.

This is my server information:
    $ uname -a
    Linux debian 5.10.0-19-amd64 #1 SMP Debian 5.10.149-2 (2022-10-21) 
x86_64 GNU/Linux
    $ cat /etc/debian_version
    11.5

This is my operation:
    $ make     CROSS_COMPILE=riscv64-linux-gnu-     PLATFORM=generic 
FW_PAYLOAD_PATH=../u-boot/u-boot.bin

And this is my log:

Loaded configuration 
'/home/snail/opensbi/platform/generic/configs/defconfig'
Configuration saved to 
'/home/snail/opensbi/build/platform/generic/kconfig/.config'
  CPP-DEP   platform/generic/firmware/fw_payload.elf.dep
  CPP-DEP   platform/generic/firmware/fw_jump.elf.dep
  CPP-DEP   platform/generic/firmware/fw_dynamic.elf.dep
  CPP-DEP   platform/generic/firmware/payloads/test.elf.dep
  AS-DEP    platform/generic/firmware/fw_payload.dep
  AS-DEP    platform/generic/firmware/fw_jump.dep
  AS-DEP    platform/generic/firmware/fw_dynamic.dep
  AS-DEP    platform/generic/firmware/payloads/test_head.dep
  CC-DEP    platform/generic/firmware/payloads/test_main.dep
  MERGE-DEP platform/generic/firmware/payloads/test.dep
  AS-DEP    lib/sbi/sbi_expected_trap.dep
  CC-DEP    lib/sbi/sbi_unpriv.dep
  CC-DEP    lib/sbi/sbi_trap.dep
  CC-DEP    lib/sbi/sbi_tlb.dep
  ...

  ...

  ...

  CC        platform/generic/lib/utils/ipi/fdt_ipi_drivers.o
  CC        platform/generic/lib/utils/ipi/fdt_ipi_mswi.o
  CC        platform/generic/lib/utils/ipi/fdt_ipi_plicsw.o
  CC        platform/generic/lib/utils/i2c/i2c.o
  CC        platform/generic/lib/utils/i2c/fdt_i2c.o
  CARRAY    platform/generic/lib/utils/i2c/fdt_i2c_adapter_drivers.c
  CC        platform/generic/lib/utils/i2c/fdt_i2c_adapter_drivers.o
  CC        platform/generic/lib/utils/i2c/fdt_i2c_sifive.o
  CC        platform/generic/lib/utils/gpio/fdt_gpio.o
  CARRAY    platform/generic/lib/utils/gpio/fdt_gpio_drivers.c
  CC        platform/generic/lib/utils/gpio/fdt_gpio_drivers.o
  CC        platform/generic/lib/utils/gpio/fdt_gpio_sifive.o
  CC        platform/generic/lib/utils/gpio/gpio.o
  CC        platform/generic/lib/utils/fdt/fdt_domain.o
  CC        platform/generic/lib/utils/fdt/fdt_pmu.o
  CC        platform/generic/lib/utils/fdt/fdt_helper.o
  CC        platform/generic/lib/utils/fdt/fdt_fixup.o
/home/snail/opensbi/lib/utils/fdt/fdt_fixup.c: In function 
‘fdt_reserved_memory_fixup’:
/home/snail/opensbi/lib/utils/fdt/fdt_fixup.c:376:2: error: label at end 
of compound statement
   376 |  next_entry:
       |  ^~~~~~~~~~
make: *** [Makefile:569: 
/home/snail/opensbi/build/platform/generic/lib/utils/fdt/fdt_fixup.o] 
Error 1

The opensbi v1.2 version I have success to build.
I try to revert this commit code 
(https://github.com/riscv-software-src/opensbi/commit/199189bd1c172aab5a9733c0ffaaa14bbebb3323), 
then the code build successful.