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authorStefan Reinauer <stefan.reinauer@coreboot.org>2015-07-13 09:39:15 +0200
committerStefan Reinauer <stefan.reinauer@coreboot.org>2015-07-13 21:04:56 +0200
commit6cb3a59fd5e754c3627b79db21c5bcc284bfd721 (patch)
treee83db5b11ee4a29d496dcf2798d024b6b8455ab7 /src/arch/x86/mmap_boot.c
parent9693885ad88d21ead7bd9ebc32f3e4901841b18b (diff)
downloadcoreboot-6cb3a59fd5e754c3627b79db21c5bcc284bfd721.tar.xz
x86: flatten hierarchy
It never made sense to have bootblock_* in init, but pirq_routing.c in boot, and some ld scripts on the main level while others live in subdirectories. This patch flattens the directory hierarchy and makes x86 more similar to the other architectures. Change-Id: I4056038fe7813e4d3d3042c441e7ab6076a36384 Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-on: http://review.coreboot.org/10901 Tested-by: build bot (Jenkins) Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Diffstat (limited to 'src/arch/x86/mmap_boot.c')
-rw-r--r--src/arch/x86/mmap_boot.c75
1 files changed, 75 insertions, 0 deletions
diff --git a/src/arch/x86/mmap_boot.c b/src/arch/x86/mmap_boot.c
new file mode 100644
index 0000000000..4dd269b772
--- /dev/null
+++ b/src/arch/x86/mmap_boot.c
@@ -0,0 +1,75 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2015 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc.
+ */
+
+#include <boot_device.h>
+#include <console/console.h>
+#include <cbfs.h>
+#include <endian.h>
+#include <stdlib.h>
+
+/* The ROM is memory mapped just below 4GiB. Form a pointer for the base. */
+#define rom_base ((void *)(uintptr_t)(-(int32_t)CONFIG_ROM_SIZE))
+
+static const struct mem_region_device boot_dev =
+ MEM_REGION_DEV_INIT(rom_base, CONFIG_ROM_SIZE);
+
+const struct region_device *boot_device_ro(void)
+{
+ return &boot_dev.rdev;
+}
+
+int cbfs_boot_region_properties(struct cbfs_props *props)
+{
+ struct cbfs_header header;
+ int32_t offset;
+ const struct region_device *bdev;
+
+ bdev = boot_device_ro();
+
+ rdev_readat(bdev, &offset, CONFIG_ROM_SIZE - sizeof(offset),
+ sizeof(offset));
+
+ /* The offset is relative to the end of the media. */
+ offset += CONFIG_ROM_SIZE;
+
+ rdev_readat(bdev, &header , offset, sizeof(header));
+
+ header.magic = ntohl(header.magic);
+ header.romsize = ntohl(header.romsize);
+ header.bootblocksize = ntohl(header.bootblocksize);
+ header.align = ntohl(header.align);
+ header.offset = ntohl(header.offset);
+
+ if (header.magic != CBFS_HEADER_MAGIC)
+ return -1;
+
+ props->align = header.align;
+ props->offset = header.offset;
+ if (CONFIG_ROM_SIZE != header.romsize)
+ props->size = CONFIG_ROM_SIZE;
+ else
+ props->size = header.romsize;
+ props->size -= props->offset;
+ props->size -= header.bootblocksize;
+ props->size = ALIGN_DOWN(props->size, props->align);
+
+ printk(BIOS_DEBUG, "CBFS @ %zx size %zx\n", props->offset, props->size);
+
+ return 0;
+}