[U-Boot] [PATCH v5 08/27] armv8: layerscape: Add TFABOOT support

[Rajesh Bhagat]

Adds TFABOOT support config option and add generic code to enable
execution from DDR.

Signed-off-by: York Sun <york.sun at nxp.com>
Signed-off-by: Rajesh Bhagat <rajesh.bhagat at nxp.com>
---
Change in v5: None
Change in v4: None
Change in v3:
 - Seperated TFABOOT generic code
 - Moved before dependency patches

 arch/arm/cpu/armv8/fsl-layerscape/Kconfig | 7 +++++++
 arch/arm/cpu/armv8/fsl-layerscape/cpu.c   | 9 ++++++---
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
index f2111fadc0..9092757d1f 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
+++ b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
@@ -514,3 +514,10 @@ config HAS_FSL_XHCI_USB
 	help
 	  For some SoC(such as LS1043A and LS1046A), USB and QE-HDLC multiplex use
 	  pins, select it when the pins are assigned to USB.
+
+config TFABOOT
+       bool "Support for booting from TFA"
+       default n
+       help
+         Enabling this will make a U-Boot binary that is capable of being
+         booted via TFA.
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/cpu.c b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c
index 6304825180..3e084eddfa 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/cpu.c
+++ b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c
@@ -88,7 +88,8 @@ static struct mm_region early_map[] = {
 #endif
 	{ CONFIG_SYS_FSL_DRAM_BASE1, CONFIG_SYS_FSL_DRAM_BASE1,
 	  CONFIG_SYS_FSL_DRAM_SIZE1,
-#if defined(CONFIG_SPL) && !defined(CONFIG_SPL_BUILD)
+#if defined(CONFIG_TFABOOT) || \
+	(defined(CONFIG_SPL) && !defined(CONFIG_SPL_BUILD))
 	  PTE_BLOCK_MEMTYPE(MT_NORMAL) |
 #else	/* Start with nGnRnE and PXN and UXN to prevent speculative access */
 	  PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) | PTE_BLOCK_PXN | PTE_BLOCK_UXN |
@@ -139,7 +140,8 @@ static struct mm_region early_map[] = {
 #endif
 	{ CONFIG_SYS_FSL_DRAM_BASE1, CONFIG_SYS_FSL_DRAM_BASE1,
 	  CONFIG_SYS_FSL_DRAM_SIZE1,
-#if defined(CONFIG_SPL) && !defined(CONFIG_SPL_BUILD)
+#if defined(CONFIG_TFABOOT) || \
+	(defined(CONFIG_SPL) && !defined(CONFIG_SPL_BUILD))
 	  PTE_BLOCK_MEMTYPE(MT_NORMAL) |
 #else	/* Start with nGnRnE and PXN and UXN to prevent speculative access */
 	  PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) | PTE_BLOCK_PXN | PTE_BLOCK_UXN |
@@ -1236,7 +1238,8 @@ void update_early_mmu_table(void)
 __weak int dram_init(void)
 {
 	fsl_initdram();
-#if !defined(CONFIG_SPL) || defined(CONFIG_SPL_BUILD)
+#if (!defined(CONFIG_SPL) && !defined(CONFIG_TFABOOT)) || \
+	defined(CONFIG_SPL_BUILD)
 	/* This will break-before-make MMU for DDR */
 	update_early_mmu_table();
 #endif
-- 
2.17.1