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usb/gadget: fastboot: add support for flash command

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- implement 'fastboot flash' for eMMC devices

Signed-off-by: Steve Rae <srae@broadcom.com>
Acked-by: Lukasz Majewski <l.majewski@samsung.com>
Reviewed-by: Marek Vasut <marex@denx.de>
This commit is contained in:
Steve Rae 2014-08-26 11:47:28 -07:00 committed by Tom Rini
parent c0aebb3382
commit d1b5ed0753
3 changed files with 44 additions and 2 deletions
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10
README
View File

@ -1629,6 +1629,16 @@ The following options need to be configured:
downloads. This buffer should be as large as possible for a
platform. Define this to the size available RAM for fastboot.
CONFIG_FASTBOOT_FLASH
The fastboot protocol includes a "flash" command for writing
the downloaded image to a non-volatile storage device. Define
this to enable the "fastboot flash" command.
CONFIG_FASTBOOT_FLASH_MMC_DEV
The fastboot "flash" command requires additional information
regarding the non-volatile storage device. Define this to
the eMMC device that fastboot should use to store the image.
- Journaling Flash filesystem support:
CONFIG_JFFS2_NAND, CONFIG_JFFS2_NAND_OFF, CONFIG_JFFS2_NAND_SIZE,
CONFIG_JFFS2_NAND_DEV

5
doc/README.android-fastboot
View File

@ -6,8 +6,9 @@ Overview
The protocol that is used over USB is described in
README.android-fastboot-protocol in same directory.
The current implementation does not yet support the flash and erase
commands.
The current implementation does not yet support the erase command or the
"oem format" command, and there is minimal support for the flash command;
it only supports eMMC devices.
Client installation
===================

31
drivers/usb/gadget/f_fastboot.c
View File

@ -19,6 +19,9 @@
#include <linux/compiler.h>
#include <version.h>
#include <g_dnl.h>
#ifdef CONFIG_FASTBOOT_FLASH_MMC_DEV
#include <fb_mmc.h>
#endif
#define FASTBOOT_VERSION "0.4"
@ -469,6 +472,28 @@ static void cb_boot(struct usb_ep *ep, struct usb_request *req)
fastboot_tx_write_str("OKAY");
}
#ifdef CONFIG_FASTBOOT_FLASH
static void cb_flash(struct usb_ep *ep, struct usb_request *req)
{
char *cmd = req->buf;
char response[RESPONSE_LEN];
strsep(&cmd, ":");
if (!cmd) {
printf("%s: missing partition name\n", __func__);
fastboot_tx_write_str("FAILmissing partition name");
return;
}
strcpy(response, "FAILno flash device defined");
#ifdef CONFIG_FASTBOOT_FLASH_MMC_DEV
fb_mmc_flash_write(cmd, (void *)CONFIG_USB_FASTBOOT_BUF_ADDR,
download_bytes, response);
#endif
fastboot_tx_write_str(response);
}
#endif
struct cmd_dispatch_info {
char *cmd;
void (*cb)(struct usb_ep *ep, struct usb_request *req);
@ -488,6 +513,12 @@ static const struct cmd_dispatch_info cmd_dispatch_info[] = {
.cmd = "boot",
.cb = cb_boot,
},
#ifdef CONFIG_FASTBOOT_FLASH
{
.cmd = "flash",
.cb = cb_flash,
},
#endif
};
static void rx_handler_command(struct usb_ep *ep, struct usb_request *req)