[PATCH -next v6 10/10] mach-k3: add carveouts for TFA and optee

[Anshul Dalal]

K3 platforms have reserved memory regions for TFA and OPTEE which should
be unmapped for U-Boot.

Therefore this patch adds the necessary fdt fixups to properly set the
load address for TFA/OPTEE and unmaps both by mmu_unmap_reserved_mem.

Signed-off-by: Anshul Dalal <anshuld at ti.com>
---
 arch/arm/mach-k3/common.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/arch/arm/mach-k3/common.c b/arch/arm/mach-k3/common.c
index 9c2fe92cf25..71fc7d31abe 100644
--- a/arch/arm/mach-k3/common.c
+++ b/arch/arm/mach-k3/common.c
@@ -31,6 +31,7 @@
 #include <dm/uclass-internal.h>
 #include <dm/device-internal.h>
 #include <asm/armv8/mmu.h>
+#include <mach/k3-common-fdt.h>
 #include <mach/k3-ddr.h>
 
 #define PROC_BOOT_CTRL_FLAG_R5_CORE_HALT	0x00000001
@@ -263,6 +264,7 @@ void board_prep_linux(struct bootm_headers *images)
 
 void enable_caches(void)
 {
+	void *fdt = (void *)gd->fdt_blob;
 	int ret;
 
 	ret = mem_map_fix_dram_banks(K3_MEM_MAP_FIRST_BANK_IDX, K3_MEM_MAP_LEN,
@@ -273,6 +275,30 @@ void enable_caches(void)
 
 	mmu_setup();
 
+	if (CONFIG_K3_ATF_LOAD_ADDR >= CFG_SYS_SDRAM_BASE) {
+		ret = fdt_fixup_reserved(fdt, "tfa", CONFIG_K3_ATF_LOAD_ADDR,
+					 0x80000);
+		if (ret)
+			debug("%s: Failed to perform tfa fixups (%s)\n",
+			      __func__, fdt_strerror(ret));
+		ret = mmu_unmap_reserved_mem("tfa");
+		if (ret)
+			debug("%s: Failed to unmap tfa rsvd mem (%s)\n",
+			      __func__, fdt_strerror(ret));
+	}
+
+	if (CONFIG_K3_OPTEE_LOAD_ADDR >= CFG_SYS_SDRAM_BASE) {
+		ret = fdt_fixup_reserved(fdt, "optee",
+					 CONFIG_K3_OPTEE_LOAD_ADDR, 0x1800000);
+		if (ret)
+			debug("%s: Failed to perform optee fixups (%s)\n",
+			      __func__, fdt_strerror(ret));
+		ret = mmu_unmap_reserved_mem("optee");
+		if (ret)
+			debug("%s: Failed to unmap optee rsvd mem (%s)\n",
+			      __func__, fdt_strerror(ret));
+	}
+
 	icache_enable();
 	dcache_enable();
 }
-- 
2.50.1