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bootloader: Fix regression preventing OTA updates

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Regression introduced in 43e231c.

Thanks to @yanbe for pointing out issue in https://github.com/espressif/esp-idf/pull/955

This is a different fix, tries to keep the behaviour that 43e231c was aiming to correct (unnecessarily testing an
invalid slot more than once.)
This commit is contained in:
Angus Gratton 2017-09-04 16:50:09 +10:00 committed by Angus Gratton
parent 3a1de7dba3
commit 1cd2ce2471
1 changed files with 20 additions and 7 deletions
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27
components/bootloader/subproject/main/bootloader_start.c
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@ -289,7 +289,8 @@ static void log_invalid_app_partition(int index)
/* Return the index of the selected boot partition.
This is the preferred boot partition, as determined by the partition table & OTA data.
This is the preferred boot partition, as determined by the partition table &
any OTA sequence number found in OTA data.
This partition will only be booted if it contains a valid app image, otherwise load_boot_image() will search
for a valid partition using this selection as the starting point.
@ -327,15 +328,27 @@ static int get_selected_boot_partition(const bootloader_state_t *bs)
return 0;
}
} else {
bool ota_valid = false;
const char *ota_msg;
int ota_seq; // Raw OTA sequence number. May be more than # of OTA slots
if(ota_select_valid(&sa) && ota_select_valid(&sb)) {
ESP_LOGD(TAG, "Both OTA sequence valid, using OTA slot %d", MAX(sa.ota_seq, sb.ota_seq)-1);
return MAX(sa.ota_seq, sb.ota_seq) - 1;
ota_valid = true;
ota_msg = "Both OTA values";
ota_seq = MAX(sa.ota_seq, sb.ota_seq) - 1;
} else if(ota_select_valid(&sa)) {
ESP_LOGD(TAG, "Only OTA sequence A is valid, using OTA slot %d", sa.ota_seq - 1);
return sa.ota_seq - 1;
ota_valid = true;
ota_msg = "Only OTA sequence A is";
ota_seq = sa.ota_seq - 1;
} else if(ota_select_valid(&sb)) {
ESP_LOGD(TAG, "Only OTA sequence B is valid, using OTA slot %d", sb.ota_seq - 1);
return sb.ota_seq - 1;
ota_valid = true;
ota_msg = "Only OTA sequence B is";
ota_seq = sb.ota_seq - 1;
}
if (ota_valid) {
int ota_slot = ota_seq % bs->app_count; // Actual OTA partition selection
ESP_LOGD(TAG, "%s valid. Mapping seq %d -> OTA slot %d", ota_msg, ota_seq, ota_slot);
return ota_slot;
} else if (bs->factory.offset != 0) {
ESP_LOGE(TAG, "ota data partition invalid, falling back to factory");
return FACTORY_INDEX;