OpenSystemsDevelopment / usbboot

Commit 4579a83a747b4d51ae20a099e425bb6bb55e1d54

Authored by Gordon Hollingworth
Committed by Gordon Hollingworth
1 parent bae4aeb7

Added functionality to boot BCM2835 over the USB

Inline Side-by-side
Showing 4 changed files with 180 additions and 0 deletions
Makefile 0 → 100644
  View file @4579a83
  1 +rpiboot: main.c
  2 + $(CC) -g -o $@ $< -lusb-1.0
main.c 0 → 100755
  View file @4579a83
  1 +#include "libusb-1.0/libusb.h"
  2 +#include <stdio.h>
  3 +#include <stdlib.h>
  4 +
  5 +#include <unistd.h>
  6 +
  7 +int Initialize_Device(libusb_context ** ctx, libusb_device_handle ** usb_device)
  8 +{
  9 + int ret = 0;
  10 +
  11 + *usb_device = libusb_open_device_with_vid_pid(*ctx, 0x0a5c, 0x2763);
  12 + if (*usb_device == NULL)
  13 + {
  14 + return -1;
  15 + }
  16 +
  17 + ret = libusb_claim_interface(*usb_device, 0);
  18 + if (ret)
  19 + {
  20 + printf("Failed to claim interface\n");
  21 + return ret;
  22 + }
  23 +
  24 + return ret;
  25 +}
  26 +
  27 +int ep_write(unsigned char *buf, int len, libusb_device_handle * usb_device)
  28 +{
  29 + int ret =
  30 + libusb_control_transfer(usb_device, LIBUSB_REQUEST_TYPE_VENDOR, 0,
  31 + len & 0xffff, len >> 16, NULL, 0, 1000);
  32 + int a_len;
  33 +
  34 + libusb_bulk_transfer(usb_device, 0x01, buf, len, &a_len, 1000);
  35 +
  36 + return a_len;
  37 +}
  38 +
  39 +int ep_read(unsigned char *buf, int len, libusb_device_handle * usb_device)
  40 +{
  41 + int ret =
  42 + libusb_control_transfer(usb_device,
  43 + LIBUSB_REQUEST_TYPE_VENDOR |
  44 + LIBUSB_ENDPOINT_IN, 0, len & 0xffff,
  45 + len >> 16, buf, len, 1000);
  46 +
  47 + return len;
  48 +}
  49 +
  50 +int main(int argc, char *argv[])
  51 +{
  52 + int result;
  53 + libusb_context *ctx;
  54 + libusb_device_handle *usb_device;
  55 + unsigned char *txbuf;
  56 + int size;
  57 + int retcode;
  58 + FILE *fp1, *fp2;
  59 + char def1[] = "usbbootcode.bin";
  60 + char def2[] = "msd.bin";
  61 + char *str1, *str2;
  62 + struct MESSAGE_S {
  63 + int length;
  64 + unsigned char signature[20];
  65 + } message;
  66 +
  67 + if (argc < 3)
  68 + {
  69 + str1 = def1;
  70 + str2 = def2;
  71 + } else
  72 + {
  73 + str1 = argv[1];
  74 + str2 = argv[2];
  75 + }
  76 +
  77 + fp1 = fopen(str1, "rb");
  78 + if (fp1 == NULL)
  79 + {
  80 + printf("Cannot open file %s\n", str1);
  81 + exit(-1);
  82 + }
  83 +
  84 + fp2 = fopen(str2, "rb");
  85 + if (fp2 == NULL)
  86 + {
  87 + printf("Cannot open file %s\n", str2);
  88 + exit(-1);
  89 + }
  90 +
  91 + int ret = libusb_init(&ctx);
  92 + if (ret)
  93 + {
  94 + printf("Failed to initialise libUSB\n");
  95 + exit(-1);
  96 + }
  97 +
  98 + libusb_set_debug(ctx, 0);
  99 +
  100 + while (1)
  101 + {
  102 + FILE *fp;
  103 +
  104 + printf("Waiting for BCM2835 ...\n");
  105 +
  106 + // Wait for a device to get plugged in
  107 + do
  108 + {
  109 + result = Initialize_Device(&ctx, &usb_device);
  110 + if (result)
  111 + {
  112 + sleep(1);
  113 + }
  114 +
  115 + }
  116 + while (result);
  117 +
  118 + {
  119 + struct libusb_device_descriptor desc;
  120 + ret =
  121 + libusb_get_device_descriptor(libusb_get_device
  122 + (usb_device), &desc);
  123 + printf("Found serial = %d: writing file %s\n",
  124 + desc.iSerialNumber,
  125 + desc.iSerialNumber == 0 ? str1 : str2);
  126 + fp = desc.iSerialNumber == 0 ? fp1 : fp2;
  127 + }
  128 +
  129 + fseek(fp, 0, SEEK_END);
  130 + message.length = ftell(fp);
  131 + fseek(fp, 0, SEEK_SET);
  132 +
  133 + txbuf = (unsigned char *)malloc(message.length);
  134 + if (txbuf == NULL)
  135 + {
  136 + printf("Failed to allocate memory\n");
  137 + exit(-1);
  138 + }
  139 +
  140 + fread(txbuf, 1, message.length, fp);
  141 +
  142 + size =
  143 + ep_write((unsigned char *)&message, sizeof(message),
  144 + usb_device);
  145 + if (size != sizeof(message))
  146 + {
  147 + printf("Failed to write correct length, returned %d\n",
  148 + size);
  149 + exit(-1);
  150 + }
  151 +
  152 + size = ep_write(txbuf, message.length, usb_device);
  153 + if (size != message.length)
  154 + {
  155 + printf("Failed to read correct length, returned %d\n",
  156 + size);
  157 + exit(-1);
  158 + }
  159 +
  160 + sleep(1);
  161 +
  162 + size =
  163 + ep_read((unsigned char *)&retcode, sizeof(retcode),
  164 + usb_device);
  165 +
  166 + if (retcode == 0)
  167 + printf("Successfull\n");
  168 + else
  169 + printf("Failed : 0x%x", retcode);
  170 +
  171 + sleep(1);
  172 + libusb_close(usb_device);
  173 + }
  174 +
  175 + libusb_exit(ctx);
  176 +
  177 + return 0;
  178 +}
msd.bin 0 → 100755
View file @4579a83
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usbbootcode.bin 0 → 100755
View file @4579a83
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