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omap4: add support for booting cpu from usb 

Signed-off-by: Vicente <vicencb@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Vicente 2012-10-09 00:55:20 +02:00 committed by Sascha Hauer
parent 7b8a200154
commit 6b4dc4d4f1
11 changed files with 1270 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
Documentation/oamp4_usb_booting.txt Normal file
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@ -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.

9
arch/arm/mach-omap/Kconfig
View File

@ -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

1
arch/arm/mach-omap/Makefile
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@ -27,4 +27,5 @@ pbl-$(CONFIG_OMAP3_CLOCK_CONFIG) += omap3_clock.o
obj-$(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

141
arch/arm/mach-omap/include/mach/omap4_rom_usb.h Normal file
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@ -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

23
arch/arm/mach-omap/omap4_generic.c
View File

@ -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;
}

198
arch/arm/mach-omap/omap4_rom_usb.c Normal file
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@ -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);

1
scripts/.gitignore vendored
View File

@ -6,3 +6,4 @@ mk-am35xx-spi-image
mkimage
mkublheader
omap_signGP
omap4_usbboot

4
scripts/Makefile
View File

@ -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

415
scripts/omap4_usbboot.c Normal file
View File

@ -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;
}

61
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/*
* 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

397
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/*
* 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);
}