configs: stm32mp1: reduce DDR_CACHEABLE_SIZE to supported 256MB DDR
Reduces the CONFIG_DDR_CACHEABLE_SIZE, the size of DDR mapped cacheable
before relocation, to support DDR with only 256MB because the OP-TEE
reserved memory is located at end of the DDR.
By default the new size of 128MB cacheable memory is enough
in dram_bank_mmu_setup() for early_enable_caches() in arch_cpu_init()
and is correct for DDR size = 256MB.
After relocation the real size of DDR, excluding the no-map reserved
memory, is used after the U-Boot device tree parsing.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
diff --git a/configs/stm32mp15_defconfig b/configs/stm32mp15_defconfig
index 12b9b54..2700b5c 100644
--- a/configs/stm32mp15_defconfig
+++ b/configs/stm32mp15_defconfig
@@ -7,7 +7,7 @@
CONFIG_ENV_SECT_SIZE=0x40000
CONFIG_DEFAULT_DEVICE_TREE="stm32mp157c-ev1"
CONFIG_SYS_PROMPT="STM32MP> "
-CONFIG_DDR_CACHEABLE_SIZE=0x10000000
+CONFIG_DDR_CACHEABLE_SIZE=0x8000000
CONFIG_CMD_STM32KEY=y
CONFIG_TYPEC_STUSB160X=y
CONFIG_TARGET_ST_STM32MP15x=y