pico-imx7d: Reserve region of memory to OPTEE

Subtracts CONFIG_OPTEE_TZDRAM_SIZE from the available DRAM size so that the OPTEE memory is not override during u-boot relocation. Note the OPTEE live in the end part of DRAM and OPTEE boot process will itself subtract the DRAM region it lives in from the memory map passed to Linux. Signed-off-by: Jun Nie <jun.nie@linaro.org> Reviewed-by: Peng Fan <peng.fan@nxp.com>

pico-imx7d: Reserve region of memory to OPTEE
Subtracts CONFIG_OPTEE_TZDRAM_SIZE from the available DRAM size so that the OPTEE memory is not override during u-boot relocation. Note the OPTEE live in the end part of DRAM and OPTEE boot process will itself subtract the DRAM region it lives in from the memory map passed to Linux. Signed-off-by: Jun Nie <jun.nie@linaro.org> Reviewed-by: Peng Fan <peng.fan@nxp.com>
Jun Nie · Stefano Babic
1 parent 79fcbde8eb
Showing 1 changed file with 5 additions and 0 deletions Side-by-side Diff
board/technexion/pico-imx7d/pico-imx7d.c
@@ -63,6 +63,11 @@
 {
 	gd->ram_size = imx_ddr_size();
  
+	/* Subtract the defined OPTEE runtime firmware length */
+#ifdef CONFIG_OPTEE_TZDRAM_SIZE
+		gd->ram_size -= CONFIG_OPTEE_TZDRAM_SIZE;
+#endif
+
 	return 0;
 }
...	...	@@ -63,6 +63,11 @@
63	63	{
64	64	gd->ram_size = imx_ddr_size();
65	65
	66	+ /* Subtract the defined OPTEE runtime firmware length */
	67	+#ifdef CONFIG_OPTEE_TZDRAM_SIZE
	68	+ gd->ram_size -= CONFIG_OPTEE_TZDRAM_SIZE;
	69	+#endif
	70	+
66	71	return 0;
67	72	}
68	73