uint32_t dfu_sd_image_swap(void)
{
bootloader_settings_t boot_settings;
bootloader_settings_get(&boot_settings);
if (boot_settings.sd_image_size == 0)
{
return NRF_SUCCESS;
}
if ((SOFTDEVICE_REGION_START + boot_settings.sd_image_size) > boot_settings.sd_image_start)
{
uint32_t err_code;
uint32_t sd_start = SOFTDEVICE_REGION_START;
uint32_t block_size = (boot_settings.sd_image_start - sd_start) / 2;
uint32_t image_end = boot_settings.sd_image_start + boot_settings.sd_image_size;
uint32_t img_block_start = boot_settings.sd_image_start + 2 * block_size;
uint32_t sd_block_start = sd_start + 2 * block_size;
if (SD_SIZE_GET(MBR_SIZE) < boot_settings.sd_image_size)
{
// This will clear a page thus ensuring the old image is invalidated before swapping.
err_code = dfu_copy_sd((uint32_t *)(sd_start + block_size),
(uint32_t *)(sd_start + block_size),
sizeof(uint32_t));
if (err_code != NRF_SUCCESS)
{
return err_code;
}
err_code = dfu_copy_sd((uint32_t *)sd_start, (uint32_t *)sd_start, sizeof(uint32_t));
if (err_code != NRF_SUCCESS)
{
return err_code;
}
}
return dfu_sd_img_block_swap((uint32_t *)img_block_start,
(uint32_t *)sd_block_start,
image_end - img_block_start,
block_size);
}
else
{
if (boot_settings.sd_image_size != 0)
{
return dfu_copy_sd((uint32_t *)boot_settings.sd_image_start,
(uint32_t *)SOFTDEVICE_REGION_START,
boot_settings.sd_image_size);
}
}
return NRF_SUCCESS;
}
/**@brief Function for validating that new application has been correctly installed. */
uint32_t dfu_app_image_validate(void)
{
bootloader_settings_t bootloader_settings;
uint32_t err_code = NRF_SUCCESS;
bootloader_settings_load(&bootloader_settings);
if ((bootloader_settings.bank_1 & BANK_VALID_MASK) & (BANK_VALID_APP))
{
err_code = compare((uint32_t *)(SD_SIZE_GET(MBR_SIZE)),
(uint32_t *)get_address(APPLICATION_PART),
bootloader_settings.app_image_size);
}
return err_code;
}
/**@brief Function for swapping existing application with newly received. */
uint32_t dfu_app_image_swap(void)
{
bootloader_settings_t bootloader_settings;
bootloader_settings_load(&bootloader_settings);
if ((bootloader_settings.bank_1 & BANK_VALID_MASK) & (BANK_VALID_APP))
{
bootloader_settings.bank_1 &= ~(BANK_VALID_APP);
bootloader_settings.bank_0 = BANK_VALID_APP;
bootloader_settings_save(&bootloader_settings);
return copy((uint32_t *)get_address(APPLICATION_PART),
(uint32_t *)(SD_SIZE_GET(MBR_SIZE)),
bootloader_settings.app_image_size);
}
return NRF_SUCCESS;
}
uint32_t dfu_sd_image_validate(void)
{
bootloader_settings_t bootloader_settings;
sd_mbr_command_t sd_mbr_cmd;
bootloader_settings_get(&bootloader_settings);
if (bootloader_settings.sd_image_size == 0)
{
return NRF_SUCCESS;
}
if ((SOFTDEVICE_REGION_START + bootloader_settings.sd_image_size) > bootloader_settings.sd_image_start)
{
uint32_t sd_start = SOFTDEVICE_REGION_START;
uint32_t block_size = (bootloader_settings.sd_image_start - sd_start) / 2;
uint32_t image_end = bootloader_settings.sd_image_start +
bootloader_settings.sd_image_size;
uint32_t img_block_start = bootloader_settings.sd_image_start + 2 * block_size;
uint32_t sd_block_start = sd_start + 2 * block_size;
if (SD_SIZE_GET(MBR_SIZE) < bootloader_settings.sd_image_size)
{
return NRF_ERROR_NULL;
}
return dfu_sd_img_block_swap((uint32_t *)img_block_start,
(uint32_t *)sd_block_start,
image_end - img_block_start,
block_size);
}
sd_mbr_cmd.command = SD_MBR_COMMAND_COMPARE;
sd_mbr_cmd.params.compare.ptr1 = (uint32_t *)SOFTDEVICE_REGION_START;
sd_mbr_cmd.params.compare.ptr2 = (uint32_t *)bootloader_settings.sd_image_start;
sd_mbr_cmd.params.compare.len = bootloader_settings.sd_image_size / sizeof(uint32_t);
return sd_mbr_command(&sd_mbr_cmd);
}
