Add submodule dependency filesHEADmaster

Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec

1 files changed, 62 insertions, 0 deletions

diff --git a/roms/u-boot/arch/arm/mach-stm32mp/dram_init.c b/roms/u-boot/arch/arm/mach-stm32mp/dram_init.c
new file mode 100644
index 000000000..66e81bacc
--- /dev/null
+++ b/roms/u-boot/arch/arm/mach-stm32mp/dram_init.c
@@ -0,0 +1,62 @@
+// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
+/*
+ * Copyright (C) 2018, STMicroelectronics - All Rights Reserved
+ */
+
+#define LOG_CATEGORY LOGC_ARCH
+
+#include <common.h>
+#include <dm.h>
+#include <image.h>
+#include <init.h>
+#include <lmb.h>
+#include <log.h>
+#include <ram.h>
+#include <asm/global_data.h>
+#include <asm/system.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int dram_init(void)
+{
+	struct ram_info ram;
+	struct udevice *dev;
+	int ret;
+
+	ret = uclass_get_device(UCLASS_RAM, 0, &dev);
+	if (ret) {
+		log_debug("RAM init failed: %d\n", ret);
+		return ret;
+	}
+	ret = ram_get_info(dev, &ram);
+	if (ret) {
+		log_debug("Cannot get RAM size: %d\n", ret);
+		return ret;
+	}
+	log_debug("RAM init base=%lx, size=%x\n", ram.base, ram.size);
+
+	gd->ram_size = ram.size;
+
+	return 0;
+}
+
+ulong board_get_usable_ram_top(ulong total_size)
+{
+	phys_size_t size;
+	phys_addr_t reg;
+	struct lmb lmb;
+
+	/* found enough not-reserved memory to relocated U-Boot */
+	lmb_init(&lmb);
+	lmb_add(&lmb, gd->ram_base, gd->ram_size);
+	boot_fdt_add_mem_rsv_regions(&lmb, (void *)gd->fdt_blob);
+	size = ALIGN(CONFIG_SYS_MALLOC_LEN + total_size, MMU_SECTION_SIZE),
+	reg = lmb_alloc(&lmb, size, MMU_SECTION_SIZE);
+
+	if (!reg)
+		reg = gd->ram_top - size;
+
+	mmu_set_region_dcache_behaviour(reg, size, DCACHE_DEFAULT_OPTION);
+
+	return reg + size;
+}