x86: Add basic support to queensbay platform and crownbay board

Implement minimum required functions for the basic support to
queensbay platform and crownbay board.

Currently the implementation is to call fsp_init() in the car_init().
We may move that call to cpu_init_f() in the future.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>

1 files changed, 78 insertions, 0 deletions

diff --git a/arch/x86/cpu/queensbay/tnc_dram.c b/arch/x86/cpu/queensbay/tnc_dram.c
new file mode 100644
index 0000000..dbc1710
--- /dev/null
+++ b/arch/x86/cpu/queensbay/tnc_dram.c
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/arch/fsp/fsp_support.h>
+#include <asm/e820.h>
+#include <asm/post.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int dram_init(void)
+{
+	phys_size_t ram_size = 0;
+	union hob_pointers_t hob;
+
+	hob.raw = gd->arch.hob_list;
+	while (!END_OF_HOB(hob)) {
+		if (hob.hdr->type == HOB_TYPE_RES_DESC) {
+			if (hob.res_desc->type == RES_SYS_MEM ||
+			    hob.res_desc->type == RES_MEM_RESERVED) {
+				ram_size += hob.res_desc->len;
+			}
+		}
+		hob.raw = GET_NEXT_HOB(hob);
+	}
+
+	gd->ram_size = ram_size;
+	post_code(POST_DRAM);
+
+	return 0;
+}
+
+void dram_init_banksize(void)
+{
+	gd->bd->bi_dram[0].start = 0;
+	gd->bd->bi_dram[0].size = gd->ram_size;
+}
+
+/*
+ * 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)
+{
+	return get_usable_lowmem_top(gd->arch.hob_list);
+}
+
+unsigned install_e820_map(unsigned max_entries, struct e820entry *entries)
+{
+	unsigned num_entries = 0;
+
+	union hob_pointers_t hob;
+
+	hob.raw = gd->arch.hob_list;
+
+	while (!END_OF_HOB(hob)) {
+		if (hob.hdr->type == HOB_TYPE_RES_DESC) {
+			entries[num_entries].addr = hob.res_desc->phys_start;
+			entries[num_entries].size = hob.res_desc->len;
+
+			if (hob.res_desc->type == RES_SYS_MEM)
+				entries[num_entries].type = E820_RAM;
+			else if (hob.res_desc->type == RES_MEM_RESERVED)
+				entries[num_entries].type = E820_RESERVED;
+		}
+		hob.raw = GET_NEXT_HOB(hob);
+		num_entries++;
+	}
+
+	return num_entries;
+}