From fd76fdc34efd5709bb2cd47e3d099e2cffcb2192 Mon Sep 17 00:00:00 2001 From: Sam Protsenko Date: Wed, 9 Jul 2025 17:29:25 -0500 Subject: 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 Signed-off-by: Minkyu Kang --- board/samsung/e850-96/e850-96.c | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) (limited to 'board') 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 */ +#include #include #include #include @@ -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(); -- cgit v1.2.3