upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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561 lines
13 KiB
561 lines
13 KiB
/*
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* (C) Copyright 2001
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* Denis Peter, MPL AG Switzerland
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*
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* Part of this source has been derived from the Linux USB
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* project.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <errno.h>
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#include <malloc.h>
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#include <stdio_dev.h>
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#include <asm/byteorder.h>
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#include <usb.h>
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/*
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* If overwrite_console returns 1, the stdin, stderr and stdout
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* are switched to the serial port, else the settings in the
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* environment are used
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*/
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#ifdef CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE
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extern int overwrite_console(void);
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#else
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int overwrite_console(void)
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{
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return 0;
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}
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#endif
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/* Keyboard sampling rate */
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#define REPEAT_RATE (40 / 4) /* 40msec -> 25cps */
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#define REPEAT_DELAY 10 /* 10 x REPEAT_RATE = 400msec */
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#define NUM_LOCK 0x53
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#define CAPS_LOCK 0x39
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#define SCROLL_LOCK 0x47
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/* Modifier bits */
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#define LEFT_CNTR (1 << 0)
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#define LEFT_SHIFT (1 << 1)
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#define LEFT_ALT (1 << 2)
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#define LEFT_GUI (1 << 3)
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#define RIGHT_CNTR (1 << 4)
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#define RIGHT_SHIFT (1 << 5)
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#define RIGHT_ALT (1 << 6)
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#define RIGHT_GUI (1 << 7)
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/* Size of the keyboard buffer */
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#define USB_KBD_BUFFER_LEN 0x20
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/* Device name */
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#define DEVNAME "usbkbd"
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/* Keyboard maps */
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static const unsigned char usb_kbd_numkey[] = {
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'1', '2', '3', '4', '5', '6', '7', '8', '9', '0',
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'\r', 0x1b, '\b', '\t', ' ', '-', '=', '[', ']',
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'\\', '#', ';', '\'', '`', ',', '.', '/'
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};
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static const unsigned char usb_kbd_numkey_shifted[] = {
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'!', '@', '#', '$', '%', '^', '&', '*', '(', ')',
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'\r', 0x1b, '\b', '\t', ' ', '_', '+', '{', '}',
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'|', '~', ':', '"', '~', '<', '>', '?'
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};
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static const unsigned char usb_kbd_num_keypad[] = {
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'/', '*', '-', '+', '\r',
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'1', '2', '3', '4', '5', '6', '7', '8', '9', '0',
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'.', 0, 0, 0, '='
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};
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/*
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* map arrow keys to ^F/^B ^N/^P, can't really use the proper
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* ANSI sequence for arrow keys because the queuing code breaks
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* when a single keypress expands to 3 queue elements
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*/
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static const unsigned char usb_kbd_arrow[] = {
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0x6, 0x2, 0xe, 0x10
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};
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/*
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* NOTE: It's important for the NUM, CAPS, SCROLL-lock bits to be in this
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* order. See usb_kbd_setled() function!
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*/
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#define USB_KBD_NUMLOCK (1 << 0)
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#define USB_KBD_CAPSLOCK (1 << 1)
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#define USB_KBD_SCROLLLOCK (1 << 2)
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#define USB_KBD_CTRL (1 << 3)
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#define USB_KBD_LEDMASK \
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(USB_KBD_NUMLOCK | USB_KBD_CAPSLOCK | USB_KBD_SCROLLLOCK)
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/*
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* USB Keyboard reports are 8 bytes in boot protocol.
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* Appendix B of HID Device Class Definition 1.11
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*/
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#define USB_KBD_BOOT_REPORT_SIZE 8
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struct usb_kbd_pdata {
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uint32_t repeat_delay;
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uint32_t usb_in_pointer;
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uint32_t usb_out_pointer;
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uint8_t usb_kbd_buffer[USB_KBD_BUFFER_LEN];
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uint8_t *new;
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uint8_t old[USB_KBD_BOOT_REPORT_SIZE];
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uint8_t flags;
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};
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extern int __maybe_unused net_busy_flag;
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/* The period of time between two calls of usb_kbd_testc(). */
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static unsigned long __maybe_unused kbd_testc_tms;
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/* Generic keyboard event polling. */
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void usb_kbd_generic_poll(void)
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{
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struct stdio_dev *dev;
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struct usb_device *usb_kbd_dev;
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struct usb_kbd_pdata *data;
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struct usb_interface *iface;
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struct usb_endpoint_descriptor *ep;
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int pipe;
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int maxp;
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/* Get the pointer to USB Keyboard device pointer */
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dev = stdio_get_by_name(DEVNAME);
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usb_kbd_dev = (struct usb_device *)dev->priv;
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data = usb_kbd_dev->privptr;
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iface = &usb_kbd_dev->config.if_desc[0];
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ep = &iface->ep_desc[0];
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pipe = usb_rcvintpipe(usb_kbd_dev, ep->bEndpointAddress);
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/* Submit a interrupt transfer request */
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maxp = usb_maxpacket(usb_kbd_dev, pipe);
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usb_submit_int_msg(usb_kbd_dev, pipe, data->new,
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min(maxp, USB_KBD_BOOT_REPORT_SIZE),
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ep->bInterval);
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}
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/* Puts character in the queue and sets up the in and out pointer. */
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static void usb_kbd_put_queue(struct usb_kbd_pdata *data, char c)
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{
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if (data->usb_in_pointer == USB_KBD_BUFFER_LEN - 1) {
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/* Check for buffer full. */
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if (data->usb_out_pointer == 0)
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return;
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data->usb_in_pointer = 0;
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} else {
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/* Check for buffer full. */
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if (data->usb_in_pointer == data->usb_out_pointer - 1)
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return;
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data->usb_in_pointer++;
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}
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data->usb_kbd_buffer[data->usb_in_pointer] = c;
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}
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/*
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* Set the LEDs. Since this is used in the irq routine, the control job is
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* issued with a timeout of 0. This means, that the job is queued without
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* waiting for job completion.
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*/
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static void usb_kbd_setled(struct usb_device *dev)
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{
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struct usb_interface *iface = &dev->config.if_desc[0];
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struct usb_kbd_pdata *data = dev->privptr;
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ALLOC_ALIGN_BUFFER(uint32_t, leds, 1, USB_DMA_MINALIGN);
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*leds = data->flags & USB_KBD_LEDMASK;
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usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
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USB_REQ_SET_REPORT, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
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0x200, iface->desc.bInterfaceNumber, leds, 1, 0);
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}
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#define CAPITAL_MASK 0x20
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/* Translate the scancode in ASCII */
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static int usb_kbd_translate(struct usb_kbd_pdata *data, unsigned char scancode,
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unsigned char modifier, int pressed)
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{
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uint8_t keycode = 0;
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/* Key released */
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if (pressed == 0) {
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data->repeat_delay = 0;
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return 0;
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}
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if (pressed == 2) {
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data->repeat_delay++;
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if (data->repeat_delay < REPEAT_DELAY)
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return 0;
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data->repeat_delay = REPEAT_DELAY;
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}
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/* Alphanumeric values */
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if ((scancode > 3) && (scancode <= 0x1d)) {
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keycode = scancode - 4 + 'a';
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if (data->flags & USB_KBD_CAPSLOCK)
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keycode &= ~CAPITAL_MASK;
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if (modifier & (LEFT_SHIFT | RIGHT_SHIFT)) {
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/* Handle CAPSLock + Shift pressed simultaneously */
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if (keycode & CAPITAL_MASK)
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keycode &= ~CAPITAL_MASK;
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else
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keycode |= CAPITAL_MASK;
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}
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}
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if ((scancode > 0x1d) && (scancode < 0x3a)) {
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/* Shift pressed */
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if (modifier & (LEFT_SHIFT | RIGHT_SHIFT))
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keycode = usb_kbd_numkey_shifted[scancode - 0x1e];
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else
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keycode = usb_kbd_numkey[scancode - 0x1e];
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}
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/* Arrow keys */
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if ((scancode >= 0x4f) && (scancode <= 0x52))
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keycode = usb_kbd_arrow[scancode - 0x4f];
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/* Numeric keypad */
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if ((scancode >= 0x54) && (scancode <= 0x67))
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keycode = usb_kbd_num_keypad[scancode - 0x54];
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if (data->flags & USB_KBD_CTRL)
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keycode = scancode - 0x3;
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if (pressed == 1) {
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if (scancode == NUM_LOCK) {
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data->flags ^= USB_KBD_NUMLOCK;
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return 1;
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}
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if (scancode == CAPS_LOCK) {
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data->flags ^= USB_KBD_CAPSLOCK;
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return 1;
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}
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if (scancode == SCROLL_LOCK) {
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data->flags ^= USB_KBD_SCROLLLOCK;
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return 1;
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}
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}
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/* Report keycode if any */
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if (keycode) {
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debug("%c", keycode);
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usb_kbd_put_queue(data, keycode);
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}
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return 0;
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}
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static uint32_t usb_kbd_service_key(struct usb_device *dev, int i, int up)
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{
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uint32_t res = 0;
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struct usb_kbd_pdata *data = dev->privptr;
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uint8_t *new;
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uint8_t *old;
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if (up) {
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new = data->old;
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old = data->new;
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} else {
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new = data->new;
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old = data->old;
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}
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if ((old[i] > 3) &&
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(memscan(new + 2, old[i], USB_KBD_BOOT_REPORT_SIZE - 2) ==
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new + USB_KBD_BOOT_REPORT_SIZE)) {
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res |= usb_kbd_translate(data, old[i], data->new[0], up);
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}
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return res;
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}
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/* Interrupt service routine */
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static int usb_kbd_irq_worker(struct usb_device *dev)
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{
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struct usb_kbd_pdata *data = dev->privptr;
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int i, res = 0;
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/* No combo key pressed */
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if (data->new[0] == 0x00)
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data->flags &= ~USB_KBD_CTRL;
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/* Left or Right Ctrl pressed */
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else if ((data->new[0] == LEFT_CNTR) || (data->new[0] == RIGHT_CNTR))
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data->flags |= USB_KBD_CTRL;
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for (i = 2; i < USB_KBD_BOOT_REPORT_SIZE; i++) {
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res |= usb_kbd_service_key(dev, i, 0);
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res |= usb_kbd_service_key(dev, i, 1);
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}
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/* Key is still pressed */
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if ((data->new[2] > 3) && (data->old[2] == data->new[2]))
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res |= usb_kbd_translate(data, data->new[2], data->new[0], 2);
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if (res == 1)
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usb_kbd_setled(dev);
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memcpy(data->old, data->new, USB_KBD_BOOT_REPORT_SIZE);
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return 1;
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}
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/* Keyboard interrupt handler */
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static int usb_kbd_irq(struct usb_device *dev)
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{
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if ((dev->irq_status != 0) ||
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(dev->irq_act_len != USB_KBD_BOOT_REPORT_SIZE)) {
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debug("USB KBD: Error %lX, len %d\n",
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dev->irq_status, dev->irq_act_len);
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return 1;
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}
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return usb_kbd_irq_worker(dev);
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}
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/* Interrupt polling */
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static inline void usb_kbd_poll_for_event(struct usb_device *dev)
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{
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#if defined(CONFIG_SYS_USB_EVENT_POLL)
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struct usb_interface *iface;
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struct usb_endpoint_descriptor *ep;
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struct usb_kbd_pdata *data;
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int pipe;
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int maxp;
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/* Get the pointer to USB Keyboard device pointer */
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data = dev->privptr;
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iface = &dev->config.if_desc[0];
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ep = &iface->ep_desc[0];
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pipe = usb_rcvintpipe(dev, ep->bEndpointAddress);
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/* Submit a interrupt transfer request */
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maxp = usb_maxpacket(dev, pipe);
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usb_submit_int_msg(dev, pipe, &data->new[0],
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min(maxp, USB_KBD_BOOT_REPORT_SIZE),
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ep->bInterval);
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usb_kbd_irq_worker(dev);
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#elif defined(CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP)
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struct usb_interface *iface;
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struct usb_kbd_pdata *data = dev->privptr;
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iface = &dev->config.if_desc[0];
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usb_get_report(dev, iface->desc.bInterfaceNumber,
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1, 0, data->new, USB_KBD_BOOT_REPORT_SIZE);
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if (memcmp(data->old, data->new, USB_KBD_BOOT_REPORT_SIZE))
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usb_kbd_irq_worker(dev);
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#endif
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}
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/* test if a character is in the queue */
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static int usb_kbd_testc(struct stdio_dev *sdev)
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{
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struct stdio_dev *dev;
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struct usb_device *usb_kbd_dev;
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struct usb_kbd_pdata *data;
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#ifdef CONFIG_CMD_NET
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/*
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* If net_busy_flag is 1, NET transfer is running,
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* then we check key-pressed every second (first check may be
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* less than 1 second) to improve TFTP booting performance.
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*/
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if (net_busy_flag && (get_timer(kbd_testc_tms) < CONFIG_SYS_HZ))
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return 0;
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kbd_testc_tms = get_timer(0);
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#endif
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dev = stdio_get_by_name(DEVNAME);
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usb_kbd_dev = (struct usb_device *)dev->priv;
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data = usb_kbd_dev->privptr;
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usb_kbd_poll_for_event(usb_kbd_dev);
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return !(data->usb_in_pointer == data->usb_out_pointer);
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}
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/* gets the character from the queue */
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static int usb_kbd_getc(struct stdio_dev *sdev)
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{
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struct stdio_dev *dev;
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struct usb_device *usb_kbd_dev;
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struct usb_kbd_pdata *data;
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dev = stdio_get_by_name(DEVNAME);
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usb_kbd_dev = (struct usb_device *)dev->priv;
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data = usb_kbd_dev->privptr;
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while (data->usb_in_pointer == data->usb_out_pointer)
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usb_kbd_poll_for_event(usb_kbd_dev);
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if (data->usb_out_pointer == USB_KBD_BUFFER_LEN - 1)
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data->usb_out_pointer = 0;
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else
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data->usb_out_pointer++;
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return data->usb_kbd_buffer[data->usb_out_pointer];
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}
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/* probes the USB device dev for keyboard type. */
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static int usb_kbd_probe(struct usb_device *dev, unsigned int ifnum)
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{
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struct usb_interface *iface;
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struct usb_endpoint_descriptor *ep;
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struct usb_kbd_pdata *data;
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int pipe, maxp;
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if (dev->descriptor.bNumConfigurations != 1)
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return 0;
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iface = &dev->config.if_desc[ifnum];
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if (iface->desc.bInterfaceClass != 3)
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return 0;
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if (iface->desc.bInterfaceSubClass != 1)
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return 0;
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if (iface->desc.bInterfaceProtocol != 1)
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return 0;
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if (iface->desc.bNumEndpoints != 1)
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return 0;
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ep = &iface->ep_desc[0];
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/* Check if endpoint 1 is interrupt endpoint */
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if (!(ep->bEndpointAddress & 0x80))
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return 0;
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if ((ep->bmAttributes & 3) != 3)
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return 0;
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debug("USB KBD: found set protocol...\n");
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data = malloc(sizeof(struct usb_kbd_pdata));
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if (!data) {
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printf("USB KBD: Error allocating private data\n");
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return 0;
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}
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/* Clear private data */
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memset(data, 0, sizeof(struct usb_kbd_pdata));
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/* allocate input buffer aligned and sized to USB DMA alignment */
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data->new = memalign(USB_DMA_MINALIGN,
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roundup(USB_KBD_BOOT_REPORT_SIZE, USB_DMA_MINALIGN));
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/* Insert private data into USB device structure */
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dev->privptr = data;
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/* Set IRQ handler */
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dev->irq_handle = usb_kbd_irq;
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pipe = usb_rcvintpipe(dev, ep->bEndpointAddress);
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maxp = usb_maxpacket(dev, pipe);
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/* We found a USB Keyboard, install it. */
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usb_set_protocol(dev, iface->desc.bInterfaceNumber, 0);
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debug("USB KBD: found set idle...\n");
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usb_set_idle(dev, iface->desc.bInterfaceNumber, REPEAT_RATE, 0);
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debug("USB KBD: enable interrupt pipe...\n");
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if (usb_submit_int_msg(dev, pipe, data->new,
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min(maxp, USB_KBD_BOOT_REPORT_SIZE),
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ep->bInterval) < 0) {
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printf("Failed to get keyboard state from device %04x:%04x\n",
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dev->descriptor.idVendor, dev->descriptor.idProduct);
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/* Abort, we don't want to use that non-functional keyboard. */
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return 0;
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}
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/* Success. */
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return 1;
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}
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/* Search for keyboard and register it if found. */
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int drv_usb_kbd_init(void)
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{
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struct stdio_dev usb_kbd_dev;
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struct usb_device *dev;
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char *stdinname = getenv("stdin");
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int error, i;
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/* Scan all USB Devices */
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for (i = 0; i < USB_MAX_DEVICE; i++) {
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/* Get USB device. */
|
|
dev = usb_get_dev_index(i);
|
|
if (!dev)
|
|
return -1;
|
|
|
|
if (dev->devnum == -1)
|
|
continue;
|
|
|
|
/* Try probing the keyboard */
|
|
if (usb_kbd_probe(dev, 0) != 1)
|
|
continue;
|
|
|
|
/* Register the keyboard */
|
|
debug("USB KBD: register.\n");
|
|
memset(&usb_kbd_dev, 0, sizeof(struct stdio_dev));
|
|
strcpy(usb_kbd_dev.name, DEVNAME);
|
|
usb_kbd_dev.flags = DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
|
|
usb_kbd_dev.getc = usb_kbd_getc;
|
|
usb_kbd_dev.tstc = usb_kbd_testc;
|
|
usb_kbd_dev.priv = (void *)dev;
|
|
error = stdio_register(&usb_kbd_dev);
|
|
if (error)
|
|
return error;
|
|
|
|
#ifdef CONFIG_CONSOLE_MUX
|
|
error = iomux_doenv(stdin, stdinname);
|
|
if (error)
|
|
return error;
|
|
#else
|
|
/* Check if this is the standard input device. */
|
|
if (strcmp(stdinname, DEVNAME))
|
|
return 1;
|
|
|
|
/* Reassign the console */
|
|
if (overwrite_console())
|
|
return 1;
|
|
|
|
error = console_assign(stdin, DEVNAME);
|
|
if (error)
|
|
return error;
|
|
#endif
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* No USB Keyboard found */
|
|
return -1;
|
|
}
|
|
|
|
/* Deregister the keyboard. */
|
|
int usb_kbd_deregister(int force)
|
|
{
|
|
#ifdef CONFIG_SYS_STDIO_DEREGISTER
|
|
int ret = stdio_deregister(DEVNAME, force);
|
|
if (ret && ret != -ENODEV)
|
|
return ret;
|
|
|
|
return 0;
|
|
#else
|
|
return 1;
|
|
#endif
|
|
}
|
|
|