fastbootd: erase, boot and partitioning commands
Change-Id: I49ba2ba2e002fd5b6bbd37cc3fd0caa106f42010
diff --git a/fastbootd/commands.c b/fastbootd/commands.c
index 252f655..83e86b0 100644
--- a/fastbootd/commands.c
+++ b/fastbootd/commands.c
@@ -32,114 +32,279 @@
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <sys/reboot.h>
+#include <fcntl.h>
#include "bootimg.h"
+#include "commands/boot.h"
+#include "commands/flash.h"
+#include "commands/partitions.h"
+#include "commands/virtual_partitions.h"
#include "debug.h"
#include "protocol.h"
+#include "trigger.h"
+#include "utils.h"
+
+#define ATAGS_LOCATION "/proc/atags"
static void cmd_boot(struct protocol_handle *phandle, const char *arg)
{
-#if 0
unsigned kernel_actual;
unsigned ramdisk_actual;
- static struct boot_img_hdr hdr;
- char *ptr = ((char*) data);
+ unsigned second_actual;
+ void *kernel_ptr;
+ void *ramdisk_ptr;
+ void *second_ptr;
+ struct boot_img_hdr *hdr;
+ int sz, atags_sz, new_atags_sz;
+ int rv;
+ char *ptr = NULL, *atags_ptr = NULL, *new_atags = NULL;
+ D(DEBUG, "cmd_boot %s\n", arg);
- if (sz < sizeof(hdr)) {
+ if (phandle->download_fd < 0) {
+ fastboot_fail(phandle, "no kernel file");
+ return;
+ }
+
+ atags_ptr = read_atags(ATAGS_LOCATION, &atags_sz);
+ if (atags_ptr == NULL) {
+ fastboot_fail(phandle, "atags read error");
+ goto error;
+ }
+
+ sz = get_file_size(phandle->download_fd);
+ ptr = (char *) mmap(NULL, sz, PROT_READ,
+ MAP_POPULATE | MAP_PRIVATE, phandle->download_fd, 0);
+ hdr = (struct boot_img_hdr *) ptr;
+
+ if (ptr == MAP_FAILED) {
+ fastboot_fail(phandle, "internal fastbootd error");
+ goto error;
+ }
+
+ if ((size_t) sz < sizeof(*hdr)) {
fastboot_fail(phandle, "invalid bootimage header");
- return;
+ goto error;
}
- memcpy(&hdr, data, sizeof(hdr));
+ kernel_actual = ROUND_TO_PAGE(hdr->kernel_size, hdr->page_size);
+ ramdisk_actual = ROUND_TO_PAGE(hdr->ramdisk_size, hdr->page_size);
+ second_actual = ROUND_TO_PAGE(hdr->second_size, hdr->page_size);
- /* ensure commandline is terminated */
- hdr.cmdline[BOOT_ARGS_SIZE-1] = 0;
+ new_atags = (char *) create_atags((unsigned *) atags_ptr, atags_sz, hdr, &new_atags_sz);
- kernel_actual = ROUND_TO_PAGE(hdr.kernel_size);
- ramdisk_actual = ROUND_TO_PAGE(hdr.ramdisk_size);
+ if (new_atags == NULL) {
+ fastboot_fail(phandle, "atags generate error");
+ goto error;
+ }
+ if (new_atags_sz > 0x4000) {
+ fastboot_fail(phandle, "atags file to large");
+ goto error;
+ }
- if (2048 + kernel_actual + ramdisk_actual < sz) {
+ if ((int) (hdr->page_size + kernel_actual + ramdisk_actual) < sz) {
fastboot_fail(phandle, "incomplete bootimage");
- return;
+ goto error;
}
- /*memmove((void*) KERNEL_ADDR, ptr + 2048, hdr.kernel_size);
- memmove((void*) RAMDISK_ADDR, ptr + 2048 + kernel_actual, hdr.ramdisk_size);*/
+ kernel_ptr = (void *)((unsigned) ptr + hdr->page_size);
+ ramdisk_ptr = (void *)((unsigned) kernel_ptr + kernel_actual);
+ second_ptr = (void *)((unsigned) ramdisk_ptr + ramdisk_actual);
+
+ D(INFO, "preparing to boot");
+ // Prepares boot physical addresses from header are ignored
+ rv = prepare_boot_linux(hdr->kernel_addr, kernel_ptr, kernel_actual,
+ hdr->ramdisk_addr, ramdisk_ptr, ramdisk_actual,
+ hdr->second_addr, second_ptr, second_actual,
+ hdr->tags_addr, new_atags, ROUND_TO_PAGE(new_atags_sz, hdr->page_size));
+ if (rv < 0) {
+ fastboot_fail(phandle, "kexec prepare failed");
+ goto error;
+ }
fastboot_okay(phandle, "");
- udc_stop();
+ free(atags_ptr);
+ munmap(ptr, sz);
+ free(new_atags);
- /*boot_linux((void*) KERNEL_ADDR, (void*) TAGS_ADDR,
- (const char*) hdr.cmdline, LINUX_MACHTYPE,
- (void*) RAMDISK_ADDR, hdr.ramdisk_size);*/
-#endif
+ D(INFO, "Kexec going to reboot");
+ reboot(LINUX_REBOOT_CMD_KEXEC);
+
+ fastboot_fail(phandle, "reboot error");
+
+ return;
+
+error:
+
+ if (atags_ptr != NULL)
+ free(atags_ptr);
+ if (ptr != NULL)
+ munmap(ptr, sz);
+
}
static void cmd_erase(struct protocol_handle *phandle, const char *arg)
{
-#if 0
- struct ptentry *ptn;
- struct ptable *ptable;
+ int partition_fd;
+ char path[PATH_MAX];
+ D(DEBUG, "cmd_erase %s\n", arg);
- ptable = flash_get_ptable();
- if (ptable == NULL) {
+ if (flash_find_entry(arg, path, PATH_MAX)) {
fastboot_fail(phandle, "partition table doesn't exist");
return;
}
- ptn = ptable_find(ptable, arg);
- if (ptn == NULL) {
- fastboot_fail(phandle, "unknown partition name");
+ if (path == NULL) {
+ fastboot_fail(phandle, "Couldn't find partition");
return;
}
- if (flash_erase(ptn)) {
+ partition_fd = flash_get_partiton(path);
+ if (partition_fd < 0) {
+ fastboot_fail(phandle, "partiton file does not exists");
+ }
+
+ if (flash_erase(partition_fd)) {
+ fastboot_fail(phandle, "failed to erase partition");
+ flash_close(partition_fd);
+ return;
+ }
+
+ if (flash_close(partition_fd) < 0) {
+ D(ERR, "could not close device %s", strerror(errno));
fastboot_fail(phandle, "failed to erase partition");
return;
}
fastboot_okay(phandle, "");
-#endif
+}
+
+static int GPT_header_location() {
+ const char *location_str = fastboot_getvar("gpt_sector");
+ char *str;
+ int location;
+
+ if (!strcmp("", location_str)) {
+ D(INFO, "GPT location not specified using second sector");
+ return 1;
+ }
+ else {
+ location = strtoul(location_str, &str, 10);
+ D(INFO, "GPT location specified as %d", location);
+
+ if (*str != '\0')
+ return -1;
+
+ return location - 1;
+ }
+}
+
+static void cmd_gpt_layout(struct protocol_handle *phandle, const char *arg) {
+ struct GPT_entry_table *oldtable;
+ int location;
+ struct GPT_content content;
+ const char *device;
+ device = fastboot_getvar("blockdev");
+
+ if (!strcmp(device, "")) {
+ fastboot_fail(phandle, "blockdev not defined in config file");
+ return;
+ }
+
+ if (phandle->download_fd < 0) {
+ fastboot_fail(phandle, "no layout file");
+ return;
+ }
+
+ location = GPT_header_location();
+ oldtable = GPT_get_device(device, location);
+
+ GPT_default_content(&content, oldtable);
+ if (oldtable == NULL)
+ D(WARN, "Could not get old gpt table");
+ else
+ GPT_release_device(oldtable);
+
+ if (!GPT_parse_file(phandle->download_fd, &content)) {
+ fastboot_fail(phandle, "Could not parse partition config file");
+ return;
+ }
+
+ if (trigger_gpt_layout(&content)) {
+ fastboot_fail(phandle, "Vendor forbids this opperation");
+ GPT_release_content(&content);
+ return;
+ }
+
+ if (!GPT_write_content(device, &content)) {
+ fastboot_fail(phandle, "Unable to write gpt file");
+ GPT_release_content(&content);
+ return;
+ }
+
+ GPT_release_content(&content);
+ fastboot_okay(phandle, "");
}
static void cmd_flash(struct protocol_handle *phandle, const char *arg)
{
-#if 0
- struct ptentry *ptn;
- struct ptable *ptable;
- unsigned extra = 0;
+ int partition;
+ uint64_t sz;
+ char data[BOOT_MAGIC_SIZE];
+ char path[PATH_MAX];
+ ssize_t header_sz = 0;
- ptable = flash_get_ptable();
- if (ptable == NULL) {
+ D(DEBUG, "cmd_flash %s\n", arg);
+
+ if (try_handle_virtual_partition(phandle, arg)) {
+ return;
+ }
+
+ if (phandle->download_fd < 0) {
+ fastboot_fail(phandle, "no kernel file");
+ return;
+ }
+
+ if (flash_find_entry(arg, path, PATH_MAX)) {
fastboot_fail(phandle, "partition table doesn't exist");
return;
}
- ptn = ptable_find(ptable, arg);
- if (ptn == NULL) {
- fastboot_fail(phandle, "unknown partition name");
- return;
- }
-
- if (!strcmp(ptn->name, "boot") || !strcmp(ptn->name, "recovery")) {
+ // TODO: Maybe its goot idea to check whether the partition is just bootable partition
+ if (!strcmp(arg, "boot") || !strcmp(arg, "recovery")) {
+ if (read_data_once(phandle->download_fd, data, BOOT_MAGIC_SIZE) < BOOT_MAGIC_SIZE) {
+ fastboot_fail(phandle, "incoming data read error, cannot read boot header");
+ return;
+ }
if (memcmp((void *)data, BOOT_MAGIC, BOOT_MAGIC_SIZE)) {
fastboot_fail(phandle, "image is not a boot image");
return;
}
}
- if (!strcmp(ptn->name, "system") || !strcmp(ptn->name, "userdata"))
- extra = 64;
- else
- sz = ROUND_TO_PAGE(sz);
+ partition = flash_get_partiton(path);
- D(INFO, "writing %d bytes to '%s'\n", sz, ptn->name);
- if (flash_write(ptn, extra, data, sz)) {
+ sz = get_file_size64(phandle->download_fd);
+ if (sz > get_file_size64(partition)) {
+ flash_close(partition);
+ D(WARN, "size of file too large");
+ fastboot_fail(phandle, "size of file too large");
+ return;
+ }
+
+ D(INFO, "writing %lld bytes to '%s'\n", sz, arg);
+
+ if (flash_write(partition, phandle->download_fd, sz, header_sz)) {
fastboot_fail(phandle, "flash write failure");
return;
}
- D(INFO, "partition '%s' updated\n", ptn->name);
-#endif
+ D(INFO, "partition '%s' updated\n", arg);
+
+ flash_close(partition);
+
fastboot_okay(phandle, "");
}
@@ -192,14 +357,26 @@
fastboot_okay(phandle, "");
}
+static void cmd_oem(struct protocol_handle *phandle, const char *arg) {
+ const char *response = "";
+
+ if (trigger_oem_cmd(arg, &response))
+ fastboot_fail(phandle, response);
+ else
+ fastboot_okay(phandle, response);
+}
+
void commands_init()
{
+ virtual_partition_register("partition-table", cmd_gpt_layout);
+
fastboot_register("boot", cmd_boot);
fastboot_register("erase:", cmd_erase);
fastboot_register("flash:", cmd_flash);
fastboot_register("continue", cmd_continue);
fastboot_register("getvar:", cmd_getvar);
fastboot_register("download:", cmd_download);
+ fastboot_register("oem", cmd_oem);
//fastboot_publish("version", "0.5");
//fastboot_publish("product", "swordfish");
//fastboot_publish("kernel", "lk");