The dfu framework uses the dfu_alt_info environment variable to get
information that is needed for performing the firmware update. Set the
dfu_alt_info for the platform to reflect the two mtd partitions
created for the u-boot env and the firmware image.
Signed-off-by: Sughosh Ganu <sughosh.g...@linaro.org>
---
Changes since V1:
* Build set_dfu_alt_info and board_get_alt_info functions only if
CONFIG_SET_DFU_ALT_INFO is defined
* Enable CONFIG_SET_DFU_ALT_INFO with
CONFIG_EFI_CAPSULE_FIRMWARE_MANAGEMENT
board/emulation/qemu-arm/qemu-arm.c | 57 +++++++++++++++++++++++++++++
lib/efi_loader/Kconfig | 1 +
2 files changed, 58 insertions(+)
diff --git a/board/emulation/qemu-arm/qemu-arm.c
b/board/emulation/qemu-arm/qemu-arm.c
index 68f70cb9be..a7be3c7c1c 100644
--- a/board/emulation/qemu-arm/qemu-arm.c
+++ b/board/emulation/qemu-arm/qemu-arm.c
@@ -195,8 +195,65 @@ void flash_write32(u32 value, void *addr)
#if defined(CONFIG_EFI_CAPSULE_FIRMWARE_MANAGEMENT)
+#include <memalign.h>
#include <mtd.h>
+#define MTDPARTS_LEN 256
+#define MTDIDS_LEN 128
+
+#define DFU_ALT_BUF_LEN SZ_1K
+
+#if defined(CONFIG_SET_DFU_ALT_INFO)
+static void board_get_alt_info(struct mtd_info *mtd, char *buf)
+{
+ struct mtd_info *part;
+ bool first = true;
+ const char *name;
+ int len, partnum = 0;
+
+ name = mtd->name;
+ len = strlen(buf);
+
+ if (buf[0] != '\0')
+ len += snprintf(buf + len, DFU_ALT_BUF_LEN - len, "&");
+ len += snprintf(buf + len, DFU_ALT_BUF_LEN - len,
+ "mtd %s=", name);
+
+ list_for_each_entry(part, &mtd->partitions, node) {
+ partnum++;
+ if (!first)
+ len += snprintf(buf + len, DFU_ALT_BUF_LEN - len, ";");
+ first = false;
+
+ len += snprintf(buf + len, DFU_ALT_BUF_LEN - len,
+ "%s part %d",
+ part->name, partnum);
+ }
+}
+
+void set_dfu_alt_info(char *interface, char *devstr)
+{
+ struct mtd_info *mtd;
+
+ ALLOC_CACHE_ALIGN_BUFFER(char, buf, DFU_ALT_BUF_LEN);
+
+ if (env_get("dfu_alt_info"))
+ return;
+
+ memset(buf, 0, sizeof(buf));
+
+ /* probe all MTD devices */
+ mtd_probe_devices();
+
+ mtd = get_mtd_device_nm("nor0");
+ if (!IS_ERR_OR_NULL(mtd))
+ board_get_alt_info(mtd, buf);
+
+ env_set("dfu_alt_info", buf);
+ printf("dfu_alt_info set\n");
+}
+#endif /* CONFIG_SET_DFU_ALT_INFO */
+
static void board_get_mtdparts(const char *dev, const char *partition,
char *mtdids, char *mtdparts)
{
diff --git a/lib/efi_loader/Kconfig b/lib/efi_loader/Kconfig
index 2cb0a6e399..bc47e7fe76 100644
--- a/lib/efi_loader/Kconfig
+++ b/lib/efi_loader/Kconfig
@@ -136,6 +136,7 @@ config EFI_CAPSULE_FIRMWARE_MANAGEMENT
depends on EFI_HAVE_CAPSULE_SUPPORT
default y
select SYS_MTDPARTS_RUNTIME
+ select SET_DFU_ALT_INFO
help
Select this option if you want to enable capsule-based
firmware update using Firmware Management Protocol.
--
2.17.1
