[RFC PATCH v2 3/8] FWU: stm32mp1: Add helper functions for accessing FWU metadata
Sughosh Ganu
sughosh.ganu at linaro.org
Sun Dec 19 08:06:00 CET 2021
Add helper functions needed for accessing the FWU metadata which
contains information on the updatable images. These functions have
been added for the STM32MP157C-DK2 board which has the updatable
images on the uSD card, formatted as GPT partitions.
Signed-off-by: Sughosh Ganu <sughosh.ganu at linaro.org>
---
Changes since V1:
* Define a new function fwu_plat_get_alt_num using logic
suggested by Patrick for returning the alt_num for the
partition
* Define a new function plat_fill_gpt_partition_guids to
fill the guid array with Partition Type guids
board/st/stm32mp1/stm32mp1.c | 162 ++++++++++++++++++++++++++++
include/fwu.h | 5 +
lib/fwu_updates/fwu_mdata_gpt_blk.c | 11 +-
3 files changed, 173 insertions(+), 5 deletions(-)
diff --git a/board/st/stm32mp1/stm32mp1.c b/board/st/stm32mp1/stm32mp1.c
index 84592677e4..28402fd127 100644
--- a/board/st/stm32mp1/stm32mp1.c
+++ b/board/st/stm32mp1/stm32mp1.c
@@ -7,10 +7,13 @@
#include <common.h>
#include <adc.h>
+#include <blk.h>
#include <bootm.h>
#include <clk.h>
#include <config.h>
+#include <dfu.h>
#include <dm.h>
+#include <efi_loader.h>
#include <env.h>
#include <env_internal.h>
#include <fdt_support.h>
@@ -23,9 +26,11 @@
#include <log.h>
#include <malloc.h>
#include <misc.h>
+#include <mmc.h>
#include <mtd_node.h>
#include <net.h>
#include <netdev.h>
+#include <part.h>
#include <phy.h>
#include <remoteproc.h>
#include <reset.h>
@@ -938,3 +943,160 @@ static void board_copro_image_process(ulong fw_image, size_t fw_size)
}
U_BOOT_FIT_LOADABLE_HANDLER(IH_TYPE_COPRO, board_copro_image_process);
+
+#if defined(CONFIG_FWU_MULTI_BANK_UPDATE)
+#include <fwu.h>
+#include <fwu_mdata.h>
+
+int fwu_plat_get_alt_num(int dev_num, void *identifier)
+{
+ int i;
+ int ret = -1;
+ u32 part;
+ int alt_num = dfu_get_alt_number();
+ struct dfu_entity *dfu;
+
+ part = *(u32 *)identifier;
+ dfu_init_env_entities(NULL, NULL);
+
+ for (i = 0; i < alt_num; i++) {
+ dfu = dfu_get_entity(i);
+
+ if (!dfu)
+ continue;
+
+ /*
+ * Currently, Multi Bank update
+ * feature is being supported
+ * only on GPT partitioned
+ * MMC/SD devices.
+ */
+ if (dfu->dev_type != DFU_DEV_MMC)
+ continue;
+
+ if (dfu->layout == DFU_RAW_ADDR &&
+ dfu->data.mmc.dev_num == dev_num &&
+ dfu->data.mmc.part == part) {
+ ret = dfu->alt;
+ break;
+ }
+ }
+
+ dfu_free_entities();
+
+ return ret;
+}
+
+static int plat_fill_gpt_partition_guids(struct blk_desc *desc,
+ efi_guid_t **part_guid_arr)
+{
+ int i, ret = 0;
+ u32 part;
+ struct dfu_entity *dfu;
+ struct disk_partition info;
+ efi_guid_t part_type_guid;
+ int alt_num = dfu_get_alt_number();
+
+ dfu_init_env_entities(NULL, NULL);
+
+ for (i = 0, part = 1; i < alt_num; i++) {
+ dfu = dfu_get_entity(i);
+
+ if (!dfu)
+ continue;
+
+ /*
+ * Currently, Multi Bank update
+ * feature is being supported
+ * only on GPT partitioned
+ * MMC/SD devices.
+ */
+ if (dfu->dev_type != DFU_DEV_MMC)
+ continue;
+
+ if (part_get_info(desc, part, &info)) {
+ part++;
+ continue;
+ }
+
+ uuid_str_to_bin(info.type_guid, part_type_guid.b,
+ UUID_STR_FORMAT_GUID);
+ guidcpy((*part_guid_arr + i), &part_type_guid);
+ part++;
+ }
+
+ dfu_free_entities();
+
+ return ret;
+}
+
+int fwu_plat_fill_partition_guids(efi_guid_t **part_guid_arr)
+{
+ int ret;
+ struct blk_desc *desc;
+
+ ret = fwu_plat_get_blk_desc(&desc);
+ if (ret < 0) {
+ log_err("Block device not found\n");
+ return -ENODEV;
+ }
+
+ return plat_fill_gpt_partition_guids(desc, part_guid_arr);
+}
+
+int fwu_plat_get_update_index(u32 *update_idx)
+{
+ int ret;
+ u32 active_idx;
+
+ ret = fwu_get_active_index(&active_idx);
+
+ if (ret < 0)
+ return -1;
+
+ *update_idx = active_idx ^= 0x1;
+
+ return ret;
+}
+
+int fwu_plat_get_blk_desc(struct blk_desc **desc)
+{
+ int ret;
+ struct mmc *mmc;
+ struct udevice *dev;
+
+ /*
+ * Initial support is being added for the DK2
+ * platform
+ */
+ if (CONFIG_IS_ENABLED(TARGET_ST_STM32MP15x) &&
+ (of_machine_is_compatible("st,stm32mp157c-dk2"))) {
+ ret = uclass_get_device(UCLASS_MMC, 0, &dev);
+ if (ret)
+ return -1;
+
+ mmc = mmc_get_mmc_dev(dev);
+ if (!mmc)
+ return -1;
+
+ if (mmc_init(mmc))
+ return -1;
+
+ *desc = mmc_get_blk_desc(mmc);
+ if (!*desc)
+ return -1;
+ }
+
+ return 0;
+}
+
+struct fwu_mdata_ops *get_plat_fwu_mdata_ops(void)
+{
+ if (CONFIG_IS_ENABLED(TARGET_ST_STM32MP15x) &&
+ (of_machine_is_compatible("st,stm32mp157c-dk2"))) {
+ return &fwu_gpt_blk_ops;
+ }
+
+ return NULL;
+}
+#endif /* CONFIG_FWU_MULTI_BANK_UPDATE */
diff --git a/include/fwu.h b/include/fwu.h
index e6bc3e6b73..1e7a1eabff 100644
--- a/include/fwu.h
+++ b/include/fwu.h
@@ -25,4 +25,9 @@ int fwu_revert_boot_index(void);
int fwu_accept_image(efi_guid_t *img_type_id);
int fwu_clear_accept_image(efi_guid_t *img_type_id, u32 bank);
+int fwu_plat_get_update_index(u32 *update_idx);
+int fwu_plat_get_blk_desc(struct blk_desc **desc);
+int fwu_plat_get_alt_num(int dev_num, void *identifier);
+int fwu_plat_fill_partition_guids(efi_guid_t **part_guid_arr);
+
#endif /* _FWU_H_ */
diff --git a/lib/fwu_updates/fwu_mdata_gpt_blk.c b/lib/fwu_updates/fwu_mdata_gpt_blk.c
index 2dcac0c3d4..6a2fa176f9 100644
--- a/lib/fwu_updates/fwu_mdata_gpt_blk.c
+++ b/lib/fwu_updates/fwu_mdata_gpt_blk.c
@@ -53,6 +53,7 @@ static int gpt_get_mdata_partitions(struct blk_desc *desc,
struct disk_partition info;
const efi_guid_t fwu_mdata_guid = FWU_MDATA_GUID;
+ mdata_parts = 0;
for (i = 1; i < MAX_SEARCH_PARTITIONS; i++) {
if (part_get_info(desc, i, &info))
continue;
@@ -340,7 +341,7 @@ out:
int fwu_gpt_get_active_index(u32 *active_idx)
{
int ret;
- struct fwu_mdata *mdata;
+ struct fwu_mdata *mdata = NULL;
ret = gpt_get_mdata(&mdata);
if (ret < 0) {
@@ -371,7 +372,7 @@ static int gpt_get_image_alt_num(struct blk_desc *desc,
{
int ret, i;
u32 part;
- struct fwu_mdata *mdata;
+ struct fwu_mdata *mdata = NULL;
struct fwu_image_entry *img_entry;
struct fwu_image_bank_info *img_bank_info;
struct disk_partition info;
@@ -443,7 +444,7 @@ int fwu_gpt_update_active_index(u32 active_idx)
{
int ret;
void *buf;
- struct fwu_mdata *mdata;
+ struct fwu_mdata *mdata = NULL;
if (active_idx > CONFIG_FWU_NUM_BANKS) {
printf("Active index value to be updated is incorrect\n");
@@ -523,7 +524,7 @@ int fwu_gpt_revert_boot_index(void)
int ret;
void *buf;
u32 cur_active_index;
- struct fwu_mdata *mdata;
+ struct fwu_mdata *mdata = NULL;
ret = gpt_get_mdata(&mdata);
if (ret < 0) {
@@ -569,7 +570,7 @@ static int fwu_gpt_set_clear_image_accept(efi_guid_t *img_type_id,
void *buf;
int ret, i;
u32 nimages;
- struct fwu_mdata *mdata;
+ struct fwu_mdata *mdata = NULL;
struct fwu_image_entry *img_entry;
struct fwu_image_bank_info *img_bank_info;
--
2.17.1
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