Patch set updated for coreboot: cbtable: describe boot media

[Patrick Georgi]

Patrick Georgi ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/10867

-gerrit

commit 5a3580c4f1425d2753993b93a34d548266fe728d
Author: Patrick Georgi 
Date:   Tue Jul 14 17:15:51 2015 +0100

cbtable: describe boot media

This allows finding the currently used CBFS (in case there are several), and
    avoids the need to define flash size when building the payload.

Change-Id: I4b00159610077761c501507e136407e9ae08c73e
    Signed-off-by: Aaron Durbin 
    Signed-off-by: Patrick Georgi 
---
 src/include/boot/coreboot_tables.h | 11 +++++++++++
 src/lib/coreboot_table.c           | 34 ++++++++++++++++++++++++++++++++++
 2 files changed, 45 insertions(+)

diff --git a/src/include/boot/coreboot_tables.h b/src/include/boot/coreboot_tables.h
index c8d5251..3dddde5 100644
--- a/src/include/boot/coreboot_tables.h
+++ b/src/include/boot/coreboot_tables.h
@@ -297,6 +297,17 @@ struct lb_spi_flash {
    uint32_t erase_cmd;
 };

+#define LB_TAG_BOOT_MEDIA_PARAMS 0x0030
+struct lb_boot_media_params {
+	uint32_t tag;
+	uint32_t size;
+	/* offsets are relative to start of boot media */
+	uint64_t fmap_offset;
+	uint64_t cbfs_offset;
+	uint64_t cbfs_size;
+	uint64_t boot_media_size;
+};
+
 #define LB_TAG_SERIALNO		0x002a
 #define MAX_SERIALNO_LENGTH	32

diff --git a/src/lib/coreboot_table.c b/src/lib/coreboot_table.c
index f7fb2bb..6859bf2 100644
--- a/src/lib/coreboot_table.c
+++ b/src/lib/coreboot_table.c
@@ -23,10 +23,12 @@
 #include <console/uart.h>
 #include <ip_checksum.h>
 #include <boot/coreboot_tables.h>
+#include <boot_device.h>
 #include <string.h>
 #include <version.h>
 #include <boardid.h>
 #include <device/device.h>
+#include <fmap.h>
 #include <stdlib.h>
 #include <cbfs.h>
 #include <cbmem.h>
@@ -228,6 +230,36 @@ static void lb_board_id(struct lb_header *header)
 #endif
 }

+static void lb_boot_media_params(struct lb_header *header)
+{
+	struct lb_boot_media_params *bmp;
+	struct cbfs_props props;
+	const struct region_device *boot_dev;
+	struct region_device fmrd;
+
+	boot_device_init();
+
+	if (cbfs_boot_region_properties(&props))
+		return;
+
+	boot_dev = boot_device_ro();
+	if (boot_dev == NULL)
+		return;
+
+	bmp = (struct lb_boot_media_params *)lb_new_record(header);
+	bmp->tag = LB_TAG_BOOT_MEDIA_PARAMS;
+	bmp->size = sizeof(*bmp);
+
+	bmp->cbfs_offset = props.offset;
+	bmp->cbfs_size = props.size;
+	bmp->boot_media_size = region_device_sz(boot_dev);
+
+	bmp->fmap_offset = ~(uint64_t)0;
+	if (find_fmap_directory(&fmrd) == 0) {
+		bmp->fmap_offset = region_device_offset(&fmrd);
+	}
+}
+
 static void lb_ram_code(struct lb_header *header)
 {
 #if IS_ENABLED(CONFIG_RAM_CODE_SUPPORT)
@@ -483,6 +515,8 @@ unsigned long write_coreboot_table(
    lb_ramoops(head);
 #endif

+	lb_boot_media_params(head);
+
    /* Remember where my valid memory ranges are */
    return lb_table_fini(head);
 }