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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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11
arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.h
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@ -31,6 +31,7 @@ enum stm32prog_target {
};
enum stm32prog_link_t {
LINK_SERIAL,
LINK_USB,
LINK_UNDEFINED,
};
@ -127,6 +128,14 @@ struct stm32prog_data {
/* STM32 header information */
struct raw_header_s *header_data;
struct image_header_s header;
/* SERIAL information */
u32 cursor;
u32 packet_number;
u32 checksum;
u8 *buffer; /* size = USART_RAM_BUFFER_SIZE*/
int dfu_seq;
u8 read_phase;
};
extern struct stm32prog_data *stm32prog_data;
@ -163,6 +172,8 @@ char *stm32prog_get_error(struct stm32prog_data *data);
/* Main function */
int stm32prog_init(struct stm32prog_data *data, ulong addr, ulong size);
int stm32prog_serial_init(struct stm32prog_data *data, int link_dev);
bool stm32prog_serial_loop(struct stm32prog_data *data);
bool stm32prog_usb_loop(struct stm32prog_data *data, int dev);
void stm32prog_clean(struct stm32prog_data *data);