armv8: layerscape: Add TFABOOT support

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

Signed-off-by: York Sun <york.sun@nxp.com>
Signed-off-by: Rajesh Bhagat <rajesh.bhagat@nxp.com>

diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
index f2111fadc05888843ebdb751248c7db88113f322..9092757d1f1c7df27ee26159498130edb18da558 100644 (file)
--- 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 336909cfe5f296b4b7e6dd698acbf6cd67d7f039..901ecb943a349fb23d292d1077c68754d589023a 100644 (file)
--- 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