From: Ricardo Salveti ricardo@foundries.io
On the iMX7ULP uCOM board, OP-TEE uses the memory region defined by the maximum DRAM address minus CONFIG_OPTEE_TZDRAM_SIZE, so subtract CONFIG_OPTEE_TZDRAM_SIZE from the available DRAM size to avoid conflicts.
Note the OPTEE boot process itself subtracts the DRAM region it lives in from the memory map passed to Linux.
Signed-off-by: Ricardo Salveti ricardo@foundries.io Signed-off-by: Oleksandr Suvorov oleksandr.suvorov@foundries.io Reviewed-by: Fabio Estevam festevam@gmail.com ---
Changes in v2: - add missed Signed-off-by - add Reviewed-by
board/ea/mx7ulp_com/mx7ulp_com.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/board/ea/mx7ulp_com/mx7ulp_com.c b/board/ea/mx7ulp_com/mx7ulp_com.c index 5b2d444366..7fce75ade9 100644 --- a/board/ea/mx7ulp_com/mx7ulp_com.c +++ b/board/ea/mx7ulp_com/mx7ulp_com.c @@ -20,6 +20,10 @@ int dram_init(void) { gd->ram_size = imx_ddr_size();
+#ifdef CONFIG_OPTEE_TZDRAM_SIZE + gd->ram_size -= CONFIG_OPTEE_TZDRAM_SIZE; +#endif + return 0; }