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stm32mp: stm32prog: add serial link support

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Add a support of UART, using the same protocol than MCU STM32.

See "AN5275: USB DFU/USART protocols used in STM32MP1 Series
bootloaders" for details.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
This commit is contained in:
Patrick Delaunay 2020-03-18 09:25:00 +01:00
parent 6ce1f4ad8d
commit 468f0508b5
6 changed files with 1021 additions and 1 deletions
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4
arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c
View file

@ -1486,6 +1486,7 @@ void stm32prog_next_phase(struct stm32prog_data *data)
}
/* found next selected partition */
data->dfu_seq = 0;
data->cur_part = NULL;
data->phase = PHASE_END;
found = false;
@ -1653,6 +1654,7 @@ int stm32prog_dfu_init(struct stm32prog_data *data)
int stm32prog_init(struct stm32prog_data *data, ulong addr, ulong size)
{
memset(data, 0x0, sizeof(*data));
data->read_phase = PHASE_RESET;
data->phase = PHASE_FLASHLAYOUT;
return parse_flash_layout(data, addr, size);
@ -1664,6 +1666,7 @@ void stm32prog_clean(struct stm32prog_data *data)
dfu_free_entities();
free(data->part_array);
free(data->otp_part);
free(data->buffer);
free(data->header_data);
}
@ -1709,6 +1712,7 @@ void dfu_initiated_callback(struct dfu_entity *dfu)
/* force the saved offset for the current partition */
if (dfu->alt == stm32prog_data->cur_part->alt_id) {
dfu->offset = stm32prog_data->offset;
stm32prog_data->dfu_seq = 0;
pr_debug("dfu offset = 0x%llx\n", dfu->offset);
}
}