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Merge "fastboot: add preflash command to help with large downloads+flash"

This commit is contained in:
JP Abgrall 2013-06-25 22:18:21 +00:00 committed by Android (Google) Code Review
parent cbc76fcadb 6f1cd0b2ad
commit 95b8790717
2 changed files with 21 additions and 10 deletions
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13
fastboot/engine.c
View File

@ -76,6 +76,7 @@ char *mkmsg(const char *fmt, ...)
#define OP_NOTICE 4
#define OP_FORMAT 5
#define OP_DOWNLOAD_SPARSE 6
#define OP_COMMAND_IGNORE_FAIL 7
typedef struct Action Action;
@ -374,6 +375,8 @@ int fb_format(Action *a, usb_handle *usb, int skip_if_not_supported)
// Following piece of code is similar to fb_queue_flash() but executes
// actions directly without queuing
snprintf(cmd, sizeof(cmd), "preflash:%s", partition);
fb_command(usb, cmd); /* Ignore status */
fprintf(stderr, "sending '%s' (%lli KB)...\n", partition, image.image_size/1024);
status = fb_download_data(usb, image.buffer, image.image_size);
if (status) goto cleanup;
@ -402,6 +405,8 @@ void fb_queue_flash(const char *ptn, void *data, unsigned sz)
{
Action *a;
a = queue_action(OP_COMMAND_IGNORE_FAIL, "preflash:%s", ptn);
a->msg = mkmsg("prep for '%s' (%d KB)", ptn, sz / 1024);
a = queue_action(OP_DOWNLOAD, "");
a->data = data;
a->size = sz;
@ -415,6 +420,8 @@ void fb_queue_flash_sparse(const char *ptn, struct sparse_file *s, unsigned sz)
{
Action *a;
a = queue_action(OP_COMMAND_IGNORE_FAIL, "preflash:%s", ptn);
a->msg = mkmsg("prep for sparse '%s' (%d KB)", ptn, sz / 1024);
a = queue_action(OP_DOWNLOAD_SPARSE, "");
a->data = s;
a->size = 0;
@ -575,7 +582,9 @@ void fb_queue_command(const char *cmd, const char *msg)
void fb_queue_download(const char *name, void *data, unsigned size)
{
Action *a = queue_action(OP_DOWNLOAD, "");
Action *a;
a = queue_action(OP_COMMAND_IGNORE_FAIL, "preflash:");
a = queue_action(OP_DOWNLOAD, "");
a->data = data;
a->size = size;
a->msg = mkmsg("downloading '%s'", name);
@ -614,6 +623,8 @@ int fb_execute_queue(usb_handle *usb)
status = fb_command(usb, a->cmd);
status = a->func(a, status, status ? fb_get_error() : "");
if (status) break;
} else if (a->op == OP_COMMAND_IGNORE_FAIL) {
fb_command(usb, a->cmd); /* Ignore status */
} else if (a->op == OP_QUERY) {
status = fb_command_response(usb, a->cmd, resp);
status = a->func(a, status, status ? fb_get_error() : resp);

18
fastboot/fastboot_protocol.txt
View File

@ -1,5 +1,5 @@
FastBoot Version 0.4
FastBoot Version 0.4++
----------------------
The fastboot protocol is a mechanism for communicating with bootloaders
@ -67,10 +67,6 @@ Transport and Framing
Example Session
---------------
Host: "getvar:version" request version variable
Client: "OKAY0.4" return version "0.4"
Host: "getvar:nonexistant" request some undefined variable
Client: "OKAY" return value ""
@ -123,6 +119,11 @@ Command Reference
"flash:%s" Write the previously downloaded image to the
named partition (if possible).
"preflash:%s" Optionally prepare for a download + flash.
E.g. flash directly during download. To deal with a
failed "flash" followed by a "boot", we send
"preflash:".
"erase:%s" Erase the indicated partition (clear to 0xFFs)
"boot" The previously downloaded data is a boot.img
@ -140,7 +141,9 @@ Command Reference
"powerdown" Power off the device.
* Note about sparse files
Large files can be split up using libsparse, and sent to the bootloader
as repeated chunks of "download:%08x" + "flash:%s".
Client Variables
----------------
@ -151,9 +154,6 @@ on it.
The various currently defined names are:
version Version of FastBoot protocol supported.
It should be "0.3" for this document.
version-bootloader Version string for the Bootloader.
version-baseband Version string of the Baseband Software