Add submodule dependency filesHEADmaster

Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec

1 files changed, 103 insertions, 0 deletions

diff --git a/roms/u-boot/arch/x86/cpu/coreboot/sdram.c b/roms/u-boot/arch/x86/cpu/coreboot/sdram.c
new file mode 100644
index 000000000..4a256bad4
--- /dev/null
+++ b/roms/u-boot/arch/x86/cpu/coreboot/sdram.c
@@ -0,0 +1,103 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ * (C) Copyright 2010,2011
+ * Graeme Russ, <graeme.russ@gmail.com>
+ */
+
+#include <common.h>
+#include <init.h>
+#include <asm/e820.h>
+#include <asm/cb_sysinfo.h>
+#include <asm/global_data.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+unsigned int install_e820_map(unsigned int max_entries,
+			      struct e820_entry *entries)
+{
+	return cb_install_e820_map(max_entries, entries);
+}
+
+/*
+ * This function looks for the highest region of memory lower than 4GB which
+ * has enough space for U-Boot where U-Boot is aligned on a page boundary. It
+ * overrides the default implementation found elsewhere which simply picks the
+ * end of ram, wherever that may be. The location of the stack, the relocation
+ * address, and how far U-Boot is moved by relocation are set in the global
+ * data structure.
+ */
+ulong board_get_usable_ram_top(ulong total_size)
+{
+	uintptr_t dest_addr = 0;
+	int i;
+
+	for (i = 0; i < lib_sysinfo.n_memranges; i++) {
+		struct memrange *memrange = &lib_sysinfo.memrange[i];
+		/* Force U-Boot to relocate to a page aligned address. */
+		uint64_t start = roundup(memrange->base, 1 << 12);
+		uint64_t end = memrange->base + memrange->size;
+
+		/* Ignore non-memory regions. */
+		if (memrange->type != CB_MEM_RAM)
+			continue;
+
+		/* Filter memory over 4GB. */
+		if (end > 0xffffffffULL)
+			end = 0x100000000ULL;
+		/* Skip this region if it's too small. */
+		if (end - start < total_size)
+			continue;
+
+		/* Use this address if it's the largest so far. */
+		if (end > dest_addr)
+			dest_addr = end;
+	}
+
+	/* If no suitable area was found, return an error. */
+	if (!dest_addr)
+		panic("No available memory found for relocation");
+
+	return (ulong)dest_addr;
+}
+
+int dram_init(void)
+{
+	int i;
+	phys_size_t ram_size = 0;
+
+	for (i = 0; i < lib_sysinfo.n_memranges; i++) {
+		struct memrange *memrange = &lib_sysinfo.memrange[i];
+		unsigned long long end = memrange->base + memrange->size;
+
+		if (memrange->type == CB_MEM_RAM && end > ram_size)
+			ram_size += memrange->size;
+	}
+
+	gd->ram_size = ram_size;
+	if (ram_size == 0)
+		return -1;
+
+	return 0;
+}
+
+int dram_init_banksize(void)
+{
+	int i, j;
+
+	if (CONFIG_NR_DRAM_BANKS) {
+		for (i = 0, j = 0; i < lib_sysinfo.n_memranges; i++) {
+			struct memrange *memrange = &lib_sysinfo.memrange[i];
+
+			if (memrange->type == CB_MEM_RAM) {
+				gd->bd->bi_dram[j].start = memrange->base;
+				gd->bd->bi_dram[j].size = memrange->size;
+				j++;
+				if (j >= CONFIG_NR_DRAM_BANKS)
+					break;
+			}
+		}
+	}
+
+	return 0;
+}