GNUBoot
/
coreboot-kgpe-d16
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

usbdebug: Add FTDI FT232H support 

Tested with gizmosphere/gizmo1 Explorer add-on board, which
exposes the following device:

   0x0403 Future Technology Devices International, Ltd
   0x6014 FT232H Single HS USB-UART/FIFO IC

For now UART is hard-coded to 115200, 8n1, no flow-control.

Change-Id: I4081f84f7700751ccbf079e7fcbb1467aa71d872
Signed-off-by: Nico Huber <nico.h@gmx.de>
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/10063
Tested-by: build bot (Jenkins)
This commit is contained in:
Kyösti Mälkki 2015-05-03 06:27:11 +03:00
parent 0e571fd7ac
commit cc4d30924a
2 changed files with 91 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/drivers/usb/Kconfig
View File

@ -89,6 +89,12 @@ config USBDEBUG_DONGLE_BEAGLEBONE_BLACK
help
Use this with BeagleBone Black.
config USBDEBUG_DONGLE_FTDI_FT232H
bool "FTDI FT232H UART"
help
Use this with FT232H usb-to-uart. Configuration is hard-coded
to use 115200, 8n1, no flow control.
endchoice
config USBDEBUG_OPTIONAL_HUB_PORT

87
src/drivers/usb/gadget.c
View File

@ -224,6 +224,85 @@ small_write:
return 0;
}
/* FTDI FT232H UART programming. */
#define FTDI_SIO_SET_FLOW_CTRL_REQUEST 0x02
#define FTDI_SIO_SET_BAUDRATE_REQUEST 0x03
#define FTDI_SIO_SET_DATA_REQUEST 0x04
#define FTDI_SIO_SET_BITMODE_REQUEST 0x0b
static int probe_for_ftdi(struct ehci_dbg_port *ehci_debug, struct dbgp_pipe *pipe)
{
int ret;
u8 devnum = 0;
u8 uart_if = 1; /* FTDI_INTERFACE_A 1 */
/* Move the device to 127 if it isn't already there */
ret = dbgp_control_msg(ehci_debug, devnum,
USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE,
USB_REQ_SET_ADDRESS, USB_DEBUG_DEVNUM, 0, NULL, 0);
if (ret < 0) {
dprintk(BIOS_INFO, "Could not move attached device to %d.\n",
USB_DEBUG_DEVNUM);
return -2;
}
devnum = USB_DEBUG_DEVNUM;
dprintk(BIOS_INFO, "EHCI debug device renamed to %d.\n", devnum);
/* Send Set Configure request to device. */
ret = dbgp_control_msg(ehci_debug, devnum,
USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE,
USB_REQ_SET_CONFIGURATION, 1, 0, NULL, 0);
if (ret < 0) {
dprintk(BIOS_INFO, "FTDI set configuration failed.\n");
return -2;
}
ret = dbgp_control_msg(ehci_debug, devnum,
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
FTDI_SIO_SET_BITMODE_REQUEST, 0, uart_if, NULL, 0);
if (ret < 0) {
dprintk(BIOS_INFO, "FTDI SET_BITMODE failed.\n");
return -3;
}
ret = dbgp_control_msg(ehci_debug, devnum,
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
FTDI_SIO_SET_BAUDRATE_REQUEST,
0xc068, 0x0200 | uart_if, NULL, 0);
if (ret < 0) {
dprintk(BIOS_INFO, "FTDI SET_BAUDRATE failed.\n");
return -3;
}
ret = dbgp_control_msg(ehci_debug, devnum,
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
FTDI_SIO_SET_DATA_REQUEST,
0x0008, uart_if, NULL, 0);
if (ret < 0) {
dprintk(BIOS_INFO, "FTDI SET_DATA failed.\n");
return -3;
}
ret = dbgp_control_msg(ehci_debug, devnum,
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
FTDI_SIO_SET_FLOW_CTRL_REQUEST,
0x0000, uart_if, NULL, 0);
if (ret < 0) {
dprintk(BIOS_INFO, "FTDI SET_FLOW_CTRL failed.\n");
return -3;
}
pipe[DBGP_CONSOLE_EPOUT].endpoint = 0x02;
pipe[DBGP_CONSOLE_EPIN].endpoint = 0x81;
ack_set_configuration(pipe, devnum, 1000);
/* Perform a small write. */
ret = dbgp_bulk_write_x(&pipe[DBGP_CONSOLE_EPOUT], "USB\r\n", 5);
if (ret < 0) {
dprintk(BIOS_INFO, "dbgp_bulk_write failed: %d\n", ret);
return -4;
}
dprintk(BIOS_INFO, "Test write done\n");
return 0;
}
int dbgp_probe_gadget(struct ehci_dbg_port *ehci_debug, struct dbgp_pipe *pipe)
{
@ -238,9 +317,13 @@ int dbgp_probe_gadget(struct ehci_dbg_port *ehci_debug, struct dbgp_pipe *pipe)
}
}
ret = probe_for_debug_descriptor(ehci_debug, pipe);
if (IS_ENABLED(CONFIG_USBDEBUG_DONGLE_FTDI_FT232H)) {
ret = probe_for_ftdi(ehci_debug, pipe);
} else {
ret = probe_for_debug_descriptor(ehci_debug, pipe);
}
if (ret < 0) {
dprintk(BIOS_INFO, "Could not enable gadget using Debug Descriptor.\n");
dprintk(BIOS_INFO, "Could not enable debug dongle.\n");
return ret;
}