Merge tag 'u-boot-stm32-20200514' of https://gitlab.denx.de/u-boot/custodians/u-boot-stm

- stm32mp1: migrate MTD and DFU configuration in Kconfig
- stm32mp1: add command stm32prog
- stm32mp1: several board and arch updates
- stm32mp1: activate data cache in SPL and before relocation
- Many improvment for AV96 board and DHCOR SoM
  (add new defconfig, DDR3 coding on DHCOR SoM, split between board and SOM
   Synchronize DDR setttings on DH SoMs, setting for I2C EEPROM)
- clk: stm32mp1: fix CK_MPU calculation
- DT alignment of stm32mp1 device tree with Linux 5.7-rc2

1 files changed, 45 insertions, 0 deletions

diff --git a/arch/arm/mach-stm32mp/boot_params.c b/arch/arm/mach-stm32mp/boot_params.c
new file mode 100644
index 00000000000..e4351de939a
--- /dev/null
+++ b/arch/arm/mach-stm32mp/boot_params.c
@@ -0,0 +1,45 @@
+// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
+/*
+ * Copyright (C) 2019, STMicroelectronics - All Rights Reserved
+ */
+
+#include <common.h>
+#include <asm/sections.h>
+#include <asm/system.h>
+
+/*
+ * Force data-section, as .bss will not be valid
+ * when save_boot_params is invoked.
+ */
+static unsigned long nt_fw_dtb __section(".data");
+
+/*
+ * Save the FDT address provided by TF-A in r2 at boot time
+ * This function is called from start.S
+ */
+void save_boot_params(unsigned long r0, unsigned long r1, unsigned long r2,
+		      unsigned long r3)
+{
+	nt_fw_dtb = r2;
+
+	save_boot_params_ret();
+}
+
+/*
+ * Use the saved FDT address provided by TF-A at boot time (NT_FW_CONFIG =
+ * Non Trusted Firmware configuration file) when the pointer is valid
+ */
+void *board_fdt_blob_setup(void)
+{
+	debug("%s: nt_fw_dtb=%lx\n", __func__, nt_fw_dtb);
+
+	/* use external device tree only if address is valid */
+	if (nt_fw_dtb >= STM32_DDR_BASE) {
+		if (fdt_magic(nt_fw_dtb) == FDT_MAGIC)
+			return (void *)nt_fw_dtb;
+		debug("%s: DTB not found.\n", __func__);
+	}
+	debug("%s: fall back to builtin DTB, %p\n", __func__, &_end);
+
+	return (void *)&_end;
+}