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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/cmd_stm32prog.c
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@ -25,11 +25,14 @@ static int do_stm32prog(cmd_tbl_t *cmdtp, int flag, int argc,
if (!strcmp(argv[1], "usb"))
link = LINK_USB;
else if (!strcmp(argv[1], "serial"))
link = LINK_SERIAL;
if (link == LINK_UNDEFINED) {
pr_err("not supported link=%s\n", argv[1]);
return CMD_RET_USAGE;
}
dev = (int)simple_strtoul(argv[2], NULL, 10);
addr = STM32_DDR_BASE;
@ -60,6 +63,12 @@ static int do_stm32prog(cmd_tbl_t *cmdtp, int flag, int argc,
goto cleanup;
switch (link) {
case LINK_SERIAL:
ret = stm32prog_serial_init(data, dev);
if (ret)
goto cleanup;
reset = stm32prog_serial_loop(data);
break;
case LINK_USB:
reset = stm32prog_usb_loop(data, dev);
break;
@ -90,7 +99,7 @@ cleanup:
U_BOOT_CMD(stm32prog, 5, 0, do_stm32prog,
"<link> <dev> [<addr>] [<size>]\n"
"start communication with tools STM32Cubeprogrammer on <link> with Flashlayout at <addr>",
"<link> = usb\n"
"<link> = serial|usb\n"
"<dev> = device instance\n"
"<addr> = address of flashlayout\n"
"<size> = size of flashlayout\n"