[PATCH 10/14] omap4: add support for booting cpu from usb
Vicente
vicencb at gmail.com
Mon Oct 8 18:55:20 EDT 2012
Signed-off-by: Vicente <vicencb at gmail.com>
---
Documentation/oamp4_usb_booting.txt | 27 ++
arch/arm/mach-omap/Kconfig | 9 +
arch/arm/mach-omap/Makefile | 1 +
arch/arm/mach-omap/include/mach/omap4_rom_usb.h | 141 ++++++++
arch/arm/mach-omap/omap4_generic.c | 23 +-
arch/arm/mach-omap/omap4_rom_usb.c | 198 +++++++++++
scripts/.gitignore | 1 +
scripts/Makefile | 4 +
scripts/omap4_usbboot.c | 415 ++++++++++++++++++++++++
scripts/usb.h | 61 ++++
scripts/usb_linux.c | 397 +++++++++++++++++++++++
11 files changed, 1270 insertions(+), 7 deletions(-)
create mode 100644 Documentation/oamp4_usb_booting.txt
create mode 100644 arch/arm/mach-omap/include/mach/omap4_rom_usb.h
create mode 100644 arch/arm/mach-omap/omap4_rom_usb.c
create mode 100644 scripts/omap4_usbboot.c
create mode 100644 scripts/usb.h
create mode 100644 scripts/usb_linux.c
diff --git a/Documentation/oamp4_usb_booting.txt b/Documentation/oamp4_usb_booting.txt
new file mode 100644
index 0000000..f0d45a2
--- /dev/null
+++ b/Documentation/oamp4_usb_booting.txt
@@ -0,0 +1,27 @@
+-------------- omap4_usb_booting --------------
+
+omap4 processors have support for booting from the usb port. To be able to fully
+use this feature you will need to enable the following:
+ OMAP4_USBBOOT
+ This CONFIG_ option adds the required infrastructure.
+ DRIVER_SERIAL_OMAP4_USBBOOT
+ This adds console support over the same usb port used for booting.
+ FS_OMAP4_USBBOOT
+ This adds filesystem support over the same usb port used for booting.
+
+To send the bootloader to the processor, execute the utility omap4_usbboot which
+can be found in the scripts subdirectory.
+omap4_usbboot takes two parameters:
+ the bootloader image
+ a directory name which will be the root for the guest system
+Once omap4_usbboot is running it will wait for enumeration of the omap4 cpu on
+the host usb subsystem. Then power on or reset the cpu with the correct sys_boot
+or SAR memory configuration.
+
+If everything works, barebox's first stage will boot and afterwards it will load
+the second stage found at "/barebox.bin".
+Barebox's second stage will still have access to the usb filesystem, so an
+initrd and a zImage can be loaded.
+
+Overall this procedure frees the developer of continously be changing the SD
+card or other boot media from host to target.
diff --git a/arch/arm/mach-omap/Kconfig b/arch/arm/mach-omap/Kconfig
index aa31633..b3dd6a4 100644
--- a/arch/arm/mach-omap/Kconfig
+++ b/arch/arm/mach-omap/Kconfig
@@ -82,6 +82,15 @@ config ARCH_TEXT_BASE
default 0x80e80000 if MACH_OMAP343xSDP
default 0x80e80000 if MACH_BEAGLE
+config OMAP4_USBBOOT
+ bool "enable booting from USB"
+ default n
+ depends on ARCH_OMAP4 && !MMU
+ help
+ Say Y here if you want to be able to boot an OMAP4 cpu from USB.
+ You need the utility program omap4_usbboot to boot from USB.
+ Please read oamp4_usb_booting.txt for more information.
+
config BOARDINFO
default "Texas Instrument's SDP343x" if MACH_OMAP343xSDP
default "Texas Instrument's Beagle" if MACH_BEAGLE
diff --git a/arch/arm/mach-omap/Makefile b/arch/arm/mach-omap/Makefile
index f752bc7..17d189d 100644
--- a/arch/arm/mach-omap/Makefile
+++ b/arch/arm/mach-omap/Makefile
@@ -26,4 +26,5 @@ obj-$(CONFIG_OMAP3_CLOCK_CONFIG) += omap3_clock.o
obj-$(CONFIG_OMAP_GPMC) += gpmc.o devices-gpmc-nand.o
obj-$(CONFIG_SHELL_NONE) += xload.o
obj-$(CONFIG_I2C_TWL6030) += omap4_twl6030_mmc.o
+obj-$(CONFIG_OMAP4_USBBOOT) += omap4_rom_usb.o
obj-y += gpio.o
diff --git a/arch/arm/mach-omap/include/mach/omap4_rom_usb.h b/arch/arm/mach-omap/include/mach/omap4_rom_usb.h
new file mode 100644
index 0000000..50c359f
--- /dev/null
+++ b/arch/arm/mach-omap/include/mach/omap4_rom_usb.h
@@ -0,0 +1,141 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _OMAP4_ROM_USB_H_
+#define _OMAP4_ROM_USB_H_
+
+/* public api */
+#define PUBLIC_API_BASE_4430 (0x28400)
+#define PUBLIC_API_BASE_4460 (0x30400)
+
+#define PUBLIC_GET_DRIVER_MEM_OFFSET (0x04)
+#define PUBLIC_GET_DRIVER_PER_OFFSET (0x08)
+#define PUBLIC_GET_DEVICE_MEM_OFFSET (0x80)
+#define PUBLIC_GET_DEVICE_PER_OFFSET (0x84)
+
+#define DEVICE_NULL 0x40
+#define DEVICE_UART1 0x41
+#define DEVICE_UART2 0x42
+#define DEVICE_UART3 0x43
+#define DEVICE_UART4 0x44
+#define DEVICE_USB 0x45
+#define DEVICE_USBEXT 0x46
+
+#define XFER_MODE_CPU 0
+#define XFER_MODE_DMA 1
+
+#define STATUS_OKAY 0
+#define STATUS_FAILED 1
+#define STATUS_TIMEOUT 2
+#define STATUS_BAD_PARAM 3
+#define STATUS_WAITING 4
+#define STATUS_NO_MEMORY 5
+#define STATUS_INVALID_PTR 6
+
+/* Memory ROM interface */
+struct read_desc {
+ u32 sector_start;
+ u32 sector_count;
+ void *destination;
+};
+
+struct mem_device {
+ u32 initialized;
+ u8 device_type;
+ u8 trials_count;
+ u32 xip_device;
+ u16 search_size;
+ u32 base_address;
+ u16 hs_toc_mask;
+ u16 gp_toc_mask;
+ void *device_data;
+ u16 *boot_options;
+};
+
+struct mem_driver {
+ int (*init)(struct mem_device *md);
+ int (*read)(struct mem_device *md, struct read_desc *rd);
+ int (*configure)(struct mem_device *md, void *config);
+};
+
+
+/* Peripheral ROM interface */
+struct per_handle {
+ void *set_to_null;
+ void (*callback)(struct per_handle *rh);
+ void *data;
+ u32 length;
+ u16 *options;
+ u32 xfer_mode;
+ u32 device_type;
+ u32 status;
+ u16 hs_toc_mask;
+ u16 gp_toc_mask;
+ u32 config_timeout;
+};
+
+struct per_driver {
+ int (*init)(struct per_handle *rh);
+ int (*read)(struct per_handle *rh);
+ int (*write)(struct per_handle *rh);
+ int (*close)(struct per_handle *rh);
+ int (*config)(struct per_handle *rh, void *x);
+};
+
+#define USB_SETCONFIGDESC_ATTRIBUTES (0)
+#define USB_SETCONFIGDESC_MAXPOWER (1)
+#define USB_SETSUSPEND_CALLBACK (2)
+struct per_usb_config {
+ u32 configid;
+ u32 value;
+};
+
+#define API(n) ((void *) (*((u32 *) (n))))
+/* ROM API End */
+
+struct omap4_usbboot {
+ struct per_handle dread;
+ struct per_handle dwrite;
+ struct per_driver *io;
+};
+
+void omap4_usbboot_close(void);
+
+void omap4_usbboot_queue_read(void *data, unsigned len);
+int omap4_usbboot_wait_read(void);
+int omap4_usbboot_is_read_waiting(void);
+int omap4_usbboot_is_read_ok(void);
+
+void omap4_usbboot_queue_write(void *data, unsigned len);
+int omap4_usbboot_wait_write(void);
+
+int omap4_usbboot_read(void *data, unsigned len);
+int omap4_usbboot_write(void *data, unsigned len);
+void omap4_usbboot_puts(const char *s);
+
+#endif
diff --git a/arch/arm/mach-omap/omap4_generic.c b/arch/arm/mach-omap/omap4_generic.c
index 6562268..5889109 100644
--- a/arch/arm/mach-omap/omap4_generic.c
+++ b/arch/arm/mach-omap/omap4_generic.c
@@ -8,6 +8,7 @@
#include <mach/xload.h>
#include <mach/gpmc.h>
#include <mach/gpio.h>
+#include <mach/omap4_rom_usb.h>
/*
* The following several lines are taken from U-Boot to support
@@ -459,13 +460,21 @@ late_initcall(watchdog_init);
static int omap_vector_init(void)
{
- __asm__ __volatile__ (
- "mov r0, #0;"
- "mcr p15, #0, r0, c12, c0, #0;"
- :
- :
- : "r0"
- );
+ /*
+ * omap4 usbboot interfaces with the omap4 ROM to reuse the USB port
+ * used for booting.
+ * The ROM code uses interrupts for the transfers, so do not modify the
+ * interrupt vectors in this case.
+ */
+ if (omap4_bootsrc() != OMAP_BOOTSRC_USB1) {
+ __asm__ __volatile__ (
+ "mov r0, #0;"
+ "mcr p15, #0, r0, c12, c0, #0;"
+ :
+ :
+ : "r0"
+ );
+ }
return 0;
}
diff --git a/arch/arm/mach-omap/omap4_rom_usb.c b/arch/arm/mach-omap/omap4_rom_usb.c
new file mode 100644
index 0000000..48d6433
--- /dev/null
+++ b/arch/arm/mach-omap/omap4_rom_usb.c
@@ -0,0 +1,198 @@
+/*
+ * This code is based on:
+ * git://github.com/swetland/omap4boot.git
+ */
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <common.h>
+#include <mach/omap4-silicon.h>
+#include <mach/omap4_rom_usb.h>
+#include <mach/xload.h>
+#include <init.h>
+
+static struct omap4_usbboot omap4_usbboot_pdata;
+
+static int omap4_usbboot_open(void)
+{
+ int (*rom_get_per_driver)(struct per_driver **io, u32 device_type);
+ int (*rom_get_per_device)(struct per_handle **rh);
+ struct per_handle *boot;
+ int n;
+ u32 base;
+
+ if (omap4_revision() >= OMAP4460_ES1_0)
+ base = PUBLIC_API_BASE_4460;
+ else
+ base = PUBLIC_API_BASE_4430;
+
+ rom_get_per_driver = API(base + PUBLIC_GET_DRIVER_PER_OFFSET);
+ rom_get_per_device = API(base + PUBLIC_GET_DEVICE_PER_OFFSET);
+
+ n = rom_get_per_device(&boot);
+ if (n)
+ return n;
+
+ if ((boot->device_type != DEVICE_USB) &&
+ (boot->device_type != DEVICE_USBEXT))
+ return -1;
+
+ memset(&omap4_usbboot_pdata, 0, sizeof(omap4_usbboot_pdata));
+ n = rom_get_per_driver(&omap4_usbboot_pdata.io, boot->device_type);
+ if (n)
+ return n;
+
+ omap4_usbboot_pdata.dread.status = -1;
+ omap4_usbboot_pdata.dread.xfer_mode = boot->xfer_mode;
+ omap4_usbboot_pdata.dread.options = boot->options;
+ omap4_usbboot_pdata.dread.device_type = boot->device_type;
+
+ omap4_usbboot_pdata.dwrite.status = -1;
+ omap4_usbboot_pdata.dwrite.xfer_mode = boot->xfer_mode;
+ omap4_usbboot_pdata.dwrite.options = boot->options;
+ omap4_usbboot_pdata.dwrite.device_type = boot->device_type;
+ __asm__ __volatile__ ("cpsie i\n");
+ return 0;
+}
+
+
+static void rom_read_callback(struct per_handle *rh)
+{
+ omap4_usbboot_pdata.dread.status = rh->status;
+ return;
+}
+
+void omap4_usbboot_queue_read(void *data, unsigned len)
+{
+ int n;
+ omap4_usbboot_pdata.dread.data = data;
+ omap4_usbboot_pdata.dread.length = len;
+ omap4_usbboot_pdata.dread.status = STATUS_WAITING;
+ omap4_usbboot_pdata.dread.xfer_mode = 1;
+ omap4_usbboot_pdata.dread.callback = rom_read_callback;
+ n = omap4_usbboot_pdata.io->read(&omap4_usbboot_pdata.dread);
+ if (n)
+ omap4_usbboot_pdata.dread.status = n;
+}
+
+int omap4_usbboot_wait_read(void)
+{
+ int ret;
+ while (omap4_usbboot_pdata.dread.status == STATUS_WAITING)
+ /* cpu_relax(); */
+ barrier();
+ ret = omap4_usbboot_pdata.dread.status;
+ omap4_usbboot_pdata.dread.status = -1;
+ return ret;
+}
+int omap4_usbboot_is_read_waiting(void)
+{
+ barrier();
+ return omap4_usbboot_pdata.dread.status == STATUS_WAITING;
+}
+int omap4_usbboot_is_read_ok(void)
+{
+ barrier();
+ return omap4_usbboot_pdata.dread.status == STATUS_OKAY;
+}
+
+static void rom_write_callback(struct per_handle *rh)
+{
+ omap4_usbboot_pdata.dwrite.status = rh->status;
+ return;
+}
+
+void omap4_usbboot_queue_write(void *data, unsigned len)
+{
+ int n;
+ omap4_usbboot_pdata.dwrite.data = data;
+ omap4_usbboot_pdata.dwrite.length = len;
+ omap4_usbboot_pdata.dwrite.status = STATUS_WAITING;
+ omap4_usbboot_pdata.dwrite.xfer_mode = 1;
+ omap4_usbboot_pdata.dwrite.callback = rom_write_callback;
+ n = omap4_usbboot_pdata.io->write(&omap4_usbboot_pdata.dwrite);
+ if (n)
+ omap4_usbboot_pdata.dwrite.status = n;
+}
+
+int omap4_usbboot_wait_write(void)
+{
+ int ret;
+ while (omap4_usbboot_pdata.dwrite.status == STATUS_WAITING)
+ /* cpu_relax(); */
+ barrier();
+ ret = omap4_usbboot_pdata.dwrite.status;
+ omap4_usbboot_pdata.dwrite.status = -1;
+ return ret;
+}
+
+#define USB_MAX_IO 65536
+int omap4_usbboot_read(void *data, unsigned len)
+{
+ unsigned xfer;
+ unsigned char *x = data;
+ int n;
+ while (len > 0) {
+ xfer = (len > USB_MAX_IO) ? USB_MAX_IO : len;
+ omap4_usbboot_queue_read(x, xfer);
+ n = omap4_usbboot_wait_read();
+ if (n)
+ return n;
+ x += xfer;
+ len -= xfer;
+ }
+ return 0;
+}
+
+int omap4_usbboot_write(void *data, unsigned len)
+{
+ omap4_usbboot_queue_write(data, len);
+ return omap4_usbboot_wait_write();
+}
+
+void omap4_usbboot_close(void)
+{
+ omap4_usbboot_pdata.io->close(&omap4_usbboot_pdata.dread);
+}
+
+void omap4_usbboot_puts(const char *s)
+{
+ u32 c;
+ while ((c = *s++))
+ omap4_usbboot_write(&c, 4);
+}
+
+static int omap4_usbboot_init(void)
+{
+ if (omap4_bootsrc() == OMAP_BOOTSRC_USB1) {
+ omap4_usbboot_open();
+ omap4_usbboot_puts("USB communications initialized\n");
+ }
+ return 0;
+}
+core_initcall(omap4_usbboot_init);
diff --git a/scripts/.gitignore b/scripts/.gitignore
index 3f1cbdb..1ca6603 100644
--- a/scripts/.gitignore
+++ b/scripts/.gitignore
@@ -6,3 +6,4 @@ mk-am35xx-spi-image
mkimage
mkublheader
omap_signGP
+omap4_usbboot
diff --git a/scripts/Makefile b/scripts/Makefile
index 55ccdac..08b325c 100644
--- a/scripts/Makefile
+++ b/scripts/Makefile
@@ -13,6 +13,10 @@ hostprogs-$(CONFIG_ARCH_OMAP) += omap_signGP mk-am35xx-spi-image
hostprogs-$(CONFIG_ARCH_S5PCxx) += s5p_cksum
hostprogs-$(CONFIG_ARCH_DAVINCI) += mkublheader
+HOSTLOADLIBES_omap4_usbboot = -lpthread
+omap4_usbboot-objs := usb_linux.o omap4_usbboot.o
+hostprogs-$(CONFIG_OMAP4_USBBOOT)+= omap4_usbboot
+
always := $(hostprogs-y) $(hostprogs-m)
subdir-y += mod
diff --git a/scripts/omap4_usbboot.c b/scripts/omap4_usbboot.c
new file mode 100644
index 0000000..a276c29
--- /dev/null
+++ b/scripts/omap4_usbboot.c
@@ -0,0 +1,415 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <stdint.h>
+#include <fcntl.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <pthread.h>
+#include <termios.h>
+
+#include "usb.h"
+
+#define USBBOOT_FS_MAGIC 0x5562464D
+#define USBBOOT_FS_CMD_OPEN 0x46530000
+#define USBBOOT_FS_CMD_CLOSE 0x46530001
+#define USBBOOT_FS_CMD_READ 0x46530002
+#define USBBOOT_FS_CMD_END 0x4653FFFF
+#define MAX_OPEN_FILES 128
+
+#define RESET 0
+#define BRIGHT 1
+#define WHITE 8
+#define RED 1
+#define BLACK 0
+#define FORMAT "%c[%d;%d;%dm"
+#define TARGET_FORMAT 0x1B, BRIGHT, RED+30, BLACK+40
+#define HOST_FORMAT 0x1B, RESET, WHITE+30, BLACK+40
+#define host_print(fmt, arg...) printf(FORMAT fmt FORMAT, \
+ HOST_FORMAT, ##arg, TARGET_FORMAT)
+
+struct thread_vars {
+ struct usb_handle *usb;
+ int hide;
+ struct termios to;
+};
+
+void *listenerTask(void *argument)
+{
+ struct thread_vars *vars = argument;
+ int c;
+ for (;;) {
+ c = getchar();
+ if (c == EOF)
+ return NULL;
+ while (vars->hide)
+ usleep(10000);
+ if (usb_write(vars->usb, &c, 4) != 4) {
+ host_print("could not send '%c' to target\n", c);
+ tcsetattr(STDIN_FILENO, TCSANOW, &vars->to);
+ exit(1);
+ }
+ }
+ return NULL;
+}
+
+int read_asic_id(struct usb_handle *usb)
+{
+#define LINEWIDTH 16
+ const uint32_t msg_getid = 0xF0030003;
+ int i, j, k, ret;
+ uint8_t id[81];
+ char line[LINEWIDTH*3+8];
+
+ printf("reading ASIC ID\n");
+ memset(id , 0xee, sizeof(id));
+ if (usb_write(usb, &msg_getid, sizeof(msg_getid)) !=
+ sizeof(msg_getid)
+ ) {
+ printf("Could not send msg_getid request\n");
+ return -1;
+ }
+ if (usb_read(usb, id, sizeof(id)) != sizeof(id)) {
+ printf("Could not read msg_getid answer\n");
+ return -1;
+ }
+ for (i = 0; i < sizeof(id); i += LINEWIDTH) {
+ sprintf(line, "%02X: ", i);
+ for (j = 0; j < LINEWIDTH && j < sizeof(id)-i; j++)
+ sprintf(line+4+j*3, "%02X ", id[i+j]);
+ line[4+j*3+0] = '\n';
+ line[4+j*3+1] = 0;
+ printf(line);
+ }
+ ret = 0;
+ for (i = 1, j = 0; i < sizeof(id) && j < id[0]; i += 2+id[i+1], j++) {
+ if (i+2+id[i+1] > sizeof(id)) {
+ printf("Truncated subblock\n");
+ ret++;
+ continue;
+ }
+ switch (id[i]) {
+ case 0x01: /* ID subblock */
+ if (id[i+1] != 0x05) {
+ printf("Unexpected ID subblock size\n");
+ ret++;
+ continue;
+ }
+ if (id[i+2] != 0x01)
+ printf("Unexpected fixed value\n");
+ k = (id[i+3]<<8) | id[i+4];
+ switch (k) {
+ case 0x4440:
+ printf("OMAP 4460 Device\n");
+ break;
+ default:
+ printf("Unknown Device\n");
+ break;
+ }
+ switch (id[i+5]) {
+ case 0x07:
+ printf("CH enabled (read from eFuse)\n");
+ break;
+ case 0x17:
+ printf("CH disabled (read from eFuse)\n");
+ break;
+ default:
+ printf("Unknown CH setting\n");
+ break;
+ }
+ printf("Rom version: %hhu\n", id[i+6]);
+ break;
+ case 0x15: /* Checksum subblock */
+ if (id[i+1] != 0x09) {
+ printf("Unexpected Checksum subblock size\n");
+ ret++;
+ continue;
+ }
+ if (id[i+2] != 0x01)
+ printf("Unexpected fixed value\n");
+ k = (id[i+3]<<24) | (id[i+4]<<16) |
+ (id[i+5]<<8) | id[i+6];
+ printf("Rom CRC: 0x%08X\n", k);
+ k = (id[i+7]<<24) | (id[i+8]<<16) |
+ (id[i+9]<<8) | id[i+10];
+ switch (k) {
+ case 0:
+ printf("A GP device\n");
+ break;
+ default:
+ printf("Unknown device\n");
+ break;
+ }
+ break;
+ }
+ }
+ if (i != sizeof(id) || j != id[0]) {
+ printf("Unexpected ASIC ID structure size.\n");
+ ret++;
+ }
+ return ret;
+}
+
+struct file_data {
+ size_t size;
+ void *data;
+};
+
+int process_file(
+ struct usb_handle *usb, const char *rootfs, struct file_data *fd_vector)
+{
+ uint32_t i, j, pos, size;
+ struct stat s;
+ int fd, ret;
+ char fname[256];
+
+ if (usb_read(usb, &i, 4) != 4) {
+ host_print("USB error\n");
+ exit(1);
+ }
+ ret = 0;
+ switch (i) {
+ case USBBOOT_FS_CMD_OPEN:
+ for (j = 0; rootfs[j]; j++)
+ fname[j] = rootfs[j];
+ for (;; j++) {
+ if (usb_read(usb, &i, 4) != 4) {
+ host_print("USB error\n");
+ exit(1);
+ }
+ if (i == USBBOOT_FS_CMD_END) {
+ fname[j] = 0;
+ break;
+ } else if (i > 0xFF) {
+ host_print("Error in filename\n");
+ ret++;
+ fname[j] = 0;
+ break;
+ } else
+ fname[j] = i;
+ }
+ for (i = 0; i < MAX_OPEN_FILES && fd_vector[i].data; i++)
+ ;
+ if (i >= MAX_OPEN_FILES) {
+ host_print("MAX_OPEN_FILES exceeded\n");
+ ret++;
+ goto open_error_1;
+ }
+ fd = open(fname, O_RDONLY);
+ if (fd < 0) {
+ host_print("cannot open '%s'\n", fname);
+ ret++;
+ goto open_error_1;
+ }
+ if (fstat(fd, &s)) {
+ host_print("cannot stat '%s'\n", fname);
+ ret++;
+ goto open_error_2;
+ }
+ fd_vector[i].data = mmap(NULL, s.st_size, PROT_READ,
+ MAP_PRIVATE, fd, 0);
+ if (fd_vector[i].data == MAP_FAILED) {
+ host_print("cannot mmap '%s'\n", fname);
+ ret++;
+ goto open_error_2;
+ }
+ close(fd);
+ fd_vector[i].size = size = s.st_size;
+ fd = i;
+ goto open_ok;
+
+open_error_2:
+ close(fd);
+open_error_1:
+ fd_vector[i].size = size = 0;
+ fd_vector[i].data = NULL;
+ fd = -1;
+open_ok:
+ if (usb_write(usb, &fd, 4) != 4 ||
+ usb_write(usb, &size, 4) != 4
+ ) {
+ host_print("could not send file size to target\n");
+ exit(1);
+ }
+ break;
+ case USBBOOT_FS_CMD_CLOSE:
+ if (usb_read(usb, &i, 4) != 4) {
+ host_print("USB error\n");
+ exit(1);
+ }
+ if (i >= MAX_OPEN_FILES || !fd_vector[i].data) {
+ host_print("invalid close index\n");
+ ret++;
+ break;
+ }
+ if (usb_read(usb, &j, 4) != 4) {
+ host_print("USB error\n");
+ exit(1);
+ }
+ if (j != USBBOOT_FS_CMD_END) {
+ host_print("invalid close\n");
+ ret++;
+ break;
+ }
+ munmap(fd_vector[i].data, fd_vector[i].size);
+ fd_vector[i].data = NULL;
+ break;
+ case USBBOOT_FS_CMD_READ:
+ if (usb_read(usb, &i, 4) != 4) {
+ host_print("USB error\n");
+ exit(1);
+ }
+ if (i >= MAX_OPEN_FILES || !fd_vector[i].data) {
+ host_print("invalid read index\n");
+ ret++;
+ break;
+ }
+ if (usb_read(usb, &pos, 4) != 4) {
+ host_print("USB error\n");
+ exit(1);
+ }
+ if (pos >= fd_vector[i].size) {
+ host_print("invalid read pos\n");
+ ret++;
+ break;
+ }
+ if (usb_read(usb, &size, 4) != 4) {
+ host_print("USB error\n");
+ exit(1);
+ }
+ if (pos+size > fd_vector[i].size) {
+ host_print("invalid read size\n");
+ ret++;
+ break;
+ }
+ if (usb_read(usb, &j, 4) != 4) {
+ host_print("USB error\n");
+ exit(1);
+ }
+ if (j != USBBOOT_FS_CMD_END) {
+ host_print("invalid read\n");
+ ret++;
+ break;
+ }
+ if (usb_write(usb, fd_vector[i].data+pos, size) != size) {
+ host_print("could not send file to target\n");
+ exit(1);
+ }
+ break;
+ case USBBOOT_FS_CMD_END:
+ default:
+ host_print("Unknown filesystem command\n");
+ ret++;
+ break;
+ }
+ return ret;
+}
+
+int usb_boot(
+ struct usb_handle *usb, void *data, unsigned sz, const char *rootfs)
+{
+ const uint32_t msg_boot = 0xF0030002;
+ uint32_t msg_size = sz;
+ int i;
+ pthread_t thread;
+ struct thread_vars vars;
+ struct termios tn;
+ struct file_data fd_vector[MAX_OPEN_FILES];
+
+ read_asic_id(usb);
+
+ printf("sending xload to target...\n");
+ usb_write(usb, &msg_boot, sizeof(msg_boot));
+ usb_write(usb, &msg_size, sizeof(msg_size));
+ usb_write(usb, data, sz);
+ munmap(data, msg_size);
+ for (i = 0; i < MAX_OPEN_FILES; i++)
+ fd_vector[i].data = NULL;
+
+ vars.usb = usb;
+ vars.hide = 0;
+ tcgetattr(STDIN_FILENO, &vars.to);
+ tn = vars.to;
+ tn.c_lflag &= ~(ICANON | ECHO);
+ printf(FORMAT, TARGET_FORMAT);
+ tcsetattr(STDIN_FILENO, TCSANOW, &tn);
+ if (pthread_create(&thread, NULL, listenerTask, &vars))
+ host_print("listenerTask failed\n");
+ for (;;) {
+ if (usb_read(usb, &i, 4) != 4)
+ break;
+ if (i == USBBOOT_FS_MAGIC) {
+ vars.hide = 1;
+ process_file(usb, rootfs, fd_vector);
+ vars.hide = 0;
+ continue;
+ }
+ printf("%c", i);
+ fflush(stdout);
+ }
+ tcsetattr(STDIN_FILENO, TCSANOW, &vars.to);
+ return 0;
+}
+
+int match_omap4_bootloader(struct usb_ifc_info *ifc)
+{
+ if (ifc->dev_vendor != 0x0451)
+ return -1;
+ if ((ifc->dev_product != 0xD010) && (ifc->dev_product != 0xD00F))
+ return -1;
+ return 0;
+}
+
+int main(int argc, char **argv)
+{
+ void *data;
+ unsigned sz;
+ struct stat s;
+ int fd;
+ struct usb_handle *usb;
+ int once;
+
+ if (argc != 3) {
+ printf("usage: %s <xloader> <rootfs>\n", argv[0]);
+ return 0;
+ }
+ argv++;
+ fd = open(argv[0], O_RDONLY);
+ if (fd < 0 || fstat(fd, &s)) {
+ printf("cannot open '%s'\n", argv[0]);
+ return -1;
+ }
+ data = mmap(NULL, s.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
+ if (data == MAP_FAILED) {
+ printf("cannot mmap '%s'\n", argv[0]);
+ return -1;
+ }
+ sz = s.st_size;
+ close(fd);
+ argv++;
+ printf(FORMAT, HOST_FORMAT);
+ for (once = 1;;) {
+ usb = usb_open(match_omap4_bootloader);
+ if (usb)
+ return usb_boot(usb, data, sz, argv[0]);
+ if (once) {
+ once = 0;
+ printf("waiting for OMAP44xx device...\n");
+ }
+ usleep(250000);
+ }
+ return -1;
+}
diff --git a/scripts/usb.h b/scripts/usb.h
new file mode 100644
index 0000000..d50aa6a
--- /dev/null
+++ b/scripts/usb.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _USB_H_
+#define _USB_H_
+
+struct usb_ifc_info {
+ /* from device descriptor */
+ unsigned short dev_vendor;
+ unsigned short dev_product;
+
+ unsigned char dev_class;
+ unsigned char dev_subclass;
+ unsigned char dev_protocol;
+
+ unsigned char ifc_class;
+ unsigned char ifc_subclass;
+ unsigned char ifc_protocol;
+
+ unsigned char has_bulk_in;
+ unsigned char has_bulk_out;
+
+ unsigned char writable;
+
+ char serial_number[256];
+};
+
+typedef int (*ifc_match_func)(struct usb_ifc_info *ifc);
+
+struct usb_handle *usb_open(ifc_match_func callback);
+int usb_close(struct usb_handle *h);
+int usb_read(struct usb_handle *h, void *_data, int len);
+int usb_write(struct usb_handle *h, const void *_data, int len);
+
+
+#endif
diff --git a/scripts/usb_linux.c b/scripts/usb_linux.c
new file mode 100644
index 0000000..43529aa
--- /dev/null
+++ b/scripts/usb_linux.c
@@ -0,0 +1,397 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <dirent.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <pthread.h>
+#include <ctype.h>
+
+#include <linux/usbdevice_fs.h>
+#include <linux/usbdevice_fs.h>
+#include <linux/version.h>
+#include <linux/usb/ch9.h>
+#include <asm/byteorder.h>
+
+#include "usb.h"
+
+#define MAX_RETRIES 5
+
+#ifdef TRACE_USB
+#define DBG1(x...) fprintf(stderr, x)
+#define DBG(x...) fprintf(stderr, x)
+#else
+#define DBG(x...)
+#define DBG1(x...)
+#endif
+
+struct usb_handle {
+ char fname[64];
+ int desc;
+ unsigned char ep_in;
+ unsigned char ep_out;
+};
+
+static inline int badname(const char *name)
+{
+ while (*name) {
+ if (!isdigit(*name++))
+ return 1;
+ }
+ return 0;
+}
+
+static int check(void *_desc, int len, unsigned type, int size)
+{
+ unsigned char *desc = _desc;
+
+ if (len < size)
+ return -1;
+ if (desc[0] < size)
+ return -1;
+ if (desc[0] > len)
+ return -1;
+ if (desc[1] != type)
+ return -1;
+
+ return 0;
+}
+
+static int filter_usb_device(int fd, char *ptr, int len, int writable,
+ ifc_match_func callback, int *ept_in_id, int *ept_out_id, int *ifc_id)
+{
+ struct usb_device_descriptor *dev;
+ struct usb_config_descriptor *cfg;
+ struct usb_interface_descriptor *ifc;
+ struct usb_endpoint_descriptor *ept;
+ struct usb_ifc_info info;
+
+ int in, out;
+ unsigned i;
+ unsigned e;
+
+ if (check(ptr, len, USB_DT_DEVICE, USB_DT_DEVICE_SIZE))
+ return -1;
+ dev = (void *) ptr;
+ len -= dev->bLength;
+ ptr += dev->bLength;
+
+ if (check(ptr, len, USB_DT_CONFIG, USB_DT_CONFIG_SIZE))
+ return -1;
+ cfg = (void *) ptr;
+ len -= cfg->bLength;
+ ptr += cfg->bLength;
+
+ info.dev_vendor = dev->idVendor;
+ info.dev_product = dev->idProduct;
+ info.dev_class = dev->bDeviceClass;
+ info.dev_subclass = dev->bDeviceSubClass;
+ info.dev_protocol = dev->bDeviceProtocol;
+ info.writable = writable;
+
+ /* read device serial number (if there is one) */
+ info.serial_number[0] = 0;
+ if (dev->iSerialNumber) {
+ struct usbdevfs_ctrltransfer ctrl;
+ __u16 buffer[128];
+ int result;
+
+ memset(buffer, 0, sizeof(buffer));
+
+ ctrl.bRequestType = USB_DIR_IN|
+ USB_TYPE_STANDARD|USB_RECIP_DEVICE;
+ ctrl.bRequest = USB_REQ_GET_DESCRIPTOR;
+ ctrl.wValue = (USB_DT_STRING << 8) | dev->iSerialNumber;
+ ctrl.wIndex = 0;
+ ctrl.wLength = sizeof(buffer);
+ ctrl.data = buffer;
+ ctrl.timeout = 50;
+
+ result = ioctl(fd, USBDEVFS_CONTROL, &ctrl);
+ if (result > 0) {
+ int i;
+ /* skip first word, and copy the rest to the serial
+ string, changing shorts to bytes. */
+ result /= 2;
+ for (i = 1; i < result; i++)
+ info.serial_number[i - 1] = buffer[i];
+ info.serial_number[i - 1] = 0;
+ }
+ }
+
+ for (i = 0; i < cfg->bNumInterfaces; i++) {
+ if (check(ptr, len, USB_DT_INTERFACE, USB_DT_INTERFACE_SIZE))
+ return -1;
+ ifc = (void *) ptr;
+ len -= ifc->bLength;
+ ptr += ifc->bLength;
+
+ in = -1;
+ out = -1;
+ info.ifc_class = ifc->bInterfaceClass;
+ info.ifc_subclass = ifc->bInterfaceSubClass;
+ info.ifc_protocol = ifc->bInterfaceProtocol;
+
+ for (e = 0; e < ifc->bNumEndpoints; e++) {
+ if (check(ptr, len, USB_DT_ENDPOINT,
+ USB_DT_ENDPOINT_SIZE)
+ )
+ return -1;
+ ept = (void *) ptr;
+ len -= ept->bLength;
+ ptr += ept->bLength;
+
+ if ((ept->bmAttributes & 0x03) != 0x02)
+ continue;
+
+ if (ept->bEndpointAddress & 0x80)
+ in = ept->bEndpointAddress;
+ else
+ out = ept->bEndpointAddress;
+ }
+
+ info.has_bulk_in = (in != -1);
+ info.has_bulk_out = (out != -1);
+
+ if (callback(&info) == 0) {
+ *ept_in_id = in;
+ *ept_out_id = out;
+ *ifc_id = ifc->bInterfaceNumber;
+ return 0;
+ }
+ }
+
+ return -1;
+}
+
+static struct usb_handle *find_usb_device(
+ const char *base, ifc_match_func callback)
+{
+ struct usb_handle *usb = 0;
+ char busname[64], devname[64];
+ char desc[1024];
+ int n, in, out, ifc;
+
+ DIR *busdir, *devdir;
+ struct dirent *de;
+ int fd;
+ int writable;
+
+ busdir = opendir(base);
+ if (busdir == 0)
+ return 0;
+
+ while ((de = readdir(busdir)) && (usb == 0)) {
+ if (badname(de->d_name))
+ continue;
+
+ sprintf(busname, "%s/%s", base, de->d_name);
+ devdir = opendir(busname);
+ if (devdir == 0)
+ continue;
+
+ /* DBG("[ scanning %s ]\n", busname); */
+ while ((de = readdir(devdir)) && (usb == 0)) {
+
+ if (badname(de->d_name))
+ continue;
+ sprintf(devname, "%s/%s", busname, de->d_name);
+
+ /* DBG("[ scanning %s ]\n", devname); */
+ writable = 1;
+ fd = open(devname, O_RDWR);
+ if (fd < 0) {
+ /* Check if we have read-only access,
+ so we can give a helpful diagnostic
+ like "adb devices" does. */
+ writable = 0;
+ fd = open(devname, O_RDONLY);
+ if (fd < 0)
+ continue;
+ }
+
+ n = read(fd, desc, sizeof(desc));
+
+ if (filter_usb_device(fd, desc, n, writable,
+ callback, &in, &out, &ifc) == 0
+ ) {
+ usb = calloc(1, sizeof(struct usb_handle));
+ strcpy(usb->fname, devname);
+ usb->ep_in = in;
+ usb->ep_out = out;
+ usb->desc = fd;
+
+ n = ioctl(fd, USBDEVFS_CLAIMINTERFACE, &ifc);
+ if (n != 0) {
+ close(fd);
+ free(usb);
+ usb = 0;
+ continue;
+ }
+ } else
+ close(fd);
+ }
+ closedir(devdir);
+ }
+ closedir(busdir);
+
+ return usb;
+}
+
+int usb_write(struct usb_handle *h, const void *_data, int len)
+{
+ unsigned char *data = (unsigned char *) _data;
+ unsigned count = 0;
+ struct usbdevfs_bulktransfer bulk;
+ int n;
+
+ if (h->ep_out == 0)
+ return -1;
+
+ if (len == 0) {
+ bulk.ep = h->ep_out;
+ bulk.len = 0;
+ bulk.data = data;
+ bulk.timeout = 0;
+
+ n = ioctl(h->desc, USBDEVFS_BULK, &bulk);
+ if (n != 0) {
+ fprintf(stderr, "ERROR: n = %d, errno = %d (%s)\n",
+ n, errno, strerror(errno));
+ return -1;
+ }
+ return 0;
+ }
+
+ while (len > 0) {
+ int xfer;
+ xfer = (len > 4096) ? 4096 : len;
+
+ bulk.ep = h->ep_out;
+ bulk.len = xfer;
+ bulk.data = data;
+ bulk.timeout = 0;
+
+ n = ioctl(h->desc, USBDEVFS_BULK, &bulk);
+ if (n != xfer) {
+ DBG("ERROR: n = %d, errno = %d (%s)\n",
+ n, errno, strerror(errno));
+ return -1;
+ }
+
+ count += xfer;
+ len -= xfer;
+ data += xfer;
+ }
+
+ return count;
+}
+
+int usb_read(struct usb_handle *h, void *_data, int len)
+{
+ unsigned char *data = (unsigned char *) _data;
+ unsigned count = 0;
+ struct usbdevfs_bulktransfer bulk;
+ int n, retry;
+
+ if (h->ep_in == 0)
+ return -1;
+
+ while (len > 0) {
+ int xfer = (len > 4096) ? 4096 : len;
+
+ bulk.ep = h->ep_in;
+ bulk.len = xfer;
+ bulk.data = data;
+ bulk.timeout = 0;
+ retry = 0;
+
+ do {
+ DBG("[ usb read %d fd = %d], fname=%s\n",
+ xfer, h->desc, h->fname);
+ n = ioctl(h->desc, USBDEVFS_BULK, &bulk);
+ DBG("[ usb read %d ] = %d, fname=%s, Retry %d\n",
+ xfer, n, h->fname, retry);
+
+ if (n < 0) {
+ DBG1("ERROR: n = %d, errno = %d (%s)\n",
+ n, errno, strerror(errno));
+ if (++retry > MAX_RETRIES)
+ return -1;
+ sleep(1);
+ }
+ } while (n < 0);
+
+ count += n;
+ len -= n;
+ data += n;
+
+ if (n < xfer)
+ break;
+ }
+
+ return count;
+}
+
+void usb_kick(struct usb_handle *h)
+{
+ int fd;
+
+ fd = h->desc;
+ h->desc = -1;
+ if (fd >= 0) {
+ close(fd);
+ DBG("[ usb closed %d ]\n", fd);
+ }
+}
+
+int usb_close(struct usb_handle *h)
+{
+ int fd;
+
+ fd = h->desc;
+ h->desc = -1;
+ if (fd >= 0) {
+ close(fd);
+ DBG("[ usb closed %d ]\n", fd);
+ }
+
+ return 0;
+}
+
+struct usb_handle *usb_open(ifc_match_func callback)
+{
+ return find_usb_device("/dev/bus/usb", callback);
+}
--
1.7.12.2
More information about the barebox
mailing list