rpi4:
- set ARCH_FIXUP_FDT_MEMORY
- bump NR_DRAM_BANKS to four to enable 8 GB of RAM
CONFIG_TARGET_RPI_4_32B=y
CONFIG_SYS_MALLOC_F_LEN=0x2000
CONFIG_ENV_SIZE=0x4000
-CONFIG_NR_DRAM_BANKS=2
+CONFIG_NR_DRAM_BANKS=4
CONFIG_DISTRO_DEFAULTS=y
CONFIG_OF_BOARD_SETUP=y
-# CONFIG_ARCH_FIXUP_FDT_MEMORY is not set
+CONFIG_ARCH_FIXUP_FDT_MEMORY=y
CONFIG_MISC_INIT_R=y
# CONFIG_DISPLAY_CPUINFO is not set
# CONFIG_DISPLAY_BOARDINFO is not set
CONFIG_TARGET_RPI_4=y
CONFIG_SYS_MALLOC_F_LEN=0x2000
CONFIG_ENV_SIZE=0x4000
-CONFIG_NR_DRAM_BANKS=2
+CONFIG_NR_DRAM_BANKS=4
CONFIG_DISTRO_DEFAULTS=y
CONFIG_OF_BOARD_SETUP=y
-# CONFIG_ARCH_FIXUP_FDT_MEMORY is not set
+CONFIG_ARCH_FIXUP_FDT_MEMORY=y
CONFIG_MISC_INIT_R=y
# CONFIG_DISPLAY_CPUINFO is not set
# CONFIG_DISPLAY_BOARDINFO is not set
CONFIG_TARGET_RPI_ARM64=y
CONFIG_SYS_MALLOC_F_LEN=0x2000
CONFIG_ENV_SIZE=0x4000
-CONFIG_NR_DRAM_BANKS=2
+CONFIG_NR_DRAM_BANKS=4
CONFIG_DISTRO_DEFAULTS=y
CONFIG_OF_BOARD_SETUP=y
CONFIG_USE_PREBOOT=y