board: samsung: e850-96: Enable EFI Capsule Update mechanism

Make it possible to update E850-96 firmware binaries using EFI Capsule
Update mechanism. For example, to update the U-Boot binary, the capsule
file can be generated like this:

    $ ./tools/mkeficapsule --index 4 \
      --guid 629578c3-ffb3-4a89-ac0c-611840727779 \
      u-boot.bin capsule4.bin

The resulting 'capsule4.bin' should be copied to ESP partition (in
/boot/efi/EFI/UpdateCapsule/ directory). Then after reboot U-Boot will
update the 'bootloader' area in eMMC Boot Partition A (boot0) and remove
the capsule file, by EFI boot manager executed as a part of Standard
Boot:

    Applying capsule capsule4.bin succeeded.
    Reboot after firmware update.

The kernel will also expose the ESRT table information via SysFS in
/sys/firmware/efi/esrt/entries.

Signed-off-by: Sam Protsenko <[email protected]>
Signed-off-by: Minkyu Kang <[email protected]>

1 files changed, 40 insertions, 0 deletions

diff --git a/board/samsung/e850-96/e850-96.c b/board/samsung/e850-96/e850-96.c
index addfe046097..4e034b9bd3b 100644
--- a/board/samsung/e850-96/e850-96.c
+++ b/board/samsung/e850-96/e850-96.c
@@ -4,6 +4,7 @@
  * Author: Sam Protsenko <[email protected]>
  */
 
+#include <efi_loader.h>
 #include <env.h>
 #include <init.h>
 #include <mapmem.h>
@@ -15,6 +16,45 @@
 #define OTP_CHIPID0		0x4
 #define OTP_CHIPID1		0x8
 
+struct efi_fw_image fw_images[] = {
+	{
+		.image_type_id = E850_96_FWBL1_IMAGE_GUID,
+		.fw_name = u"E850-96-FWBL1",
+		.image_index = 1,
+	},
+	{
+		.image_type_id = E850_96_EPBL_IMAGE_GUID,
+		.fw_name = u"E850-96-EPBL",
+		.image_index = 2,
+	},
+	{
+		.image_type_id = E850_96_BL2_IMAGE_GUID,
+		.fw_name = u"E850-96-BL2",
+		.image_index = 3,
+	},
+	{
+		.image_type_id = E850_96_BOOTLOADER_IMAGE_GUID,
+		.fw_name = u"E850-96-BOOTLOADER",
+		.image_index = 4,
+	},
+	{
+		.image_type_id = E850_96_EL3_MON_IMAGE_GUID,
+		.fw_name = u"E850-96-EL3-MON",
+		.image_index = 5,
+	},
+};
+
+struct efi_capsule_update_info update_info = {
+	.dfu_string = "mmc 0="
+			"fwbl1.img raw 0x0 0x18 mmcpart 1;"
+			"epbl.img raw 0x18 0x98 mmcpart 1;"
+			"bl2.img raw 0xb0 0x200 mmcpart 1;"
+			"bootloader.img raw 0x438 0x1000 mmcpart 1;"
+			"el3_mon.img raw 0x1438 0x200 mmcpart 1",
+	.num_images = ARRAY_SIZE(fw_images),
+	.images = fw_images,
+};
+
 int dram_init(void)
 {
 	return fdtdec_setup_mem_size_base();