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ODROID-COMMON: mpt: Find boot device.

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- When mount the mpt, find boot device from the 'boot_device' arguments.

Change-Id: I6d092783f4d081bd803933a8036c0fad2607d82d
This commit is contained in:
Luke go
2020-11-24 17:39:02 +09:00
committed by Chris
parent 6a011a09ab
commit 63b3f28dfb
1 changed files with 25 additions and 0 deletions
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25
block/partitions/mpt.c
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@@ -83,11 +83,28 @@ static void applyInfo(struct parsed_partitions *state, int slot, struct ptable_t
state->parts[state->next].has_info = true;
}
#if defined(CONFIG_ARCH_MESON64_ODROID_COMMON)
#define BOOT_DEVICE_LENGTH 12
static char boot_device[BOOT_DEVICE_LENGTH] = "";
static int __init get_boot_device(char *str)
{
if (str) {
strncpy(boot_device, str, sizeof(str) - 1);
boot_device[sizeof(str)-1] = '\0';
}
return 0;
}
__setup("boot_device=", get_boot_device);
#endif
int mpt_partition(struct parsed_partitions *state)
{
Sector sect;
unsigned char *data;
struct ptable_t *mpt;
struct gendisk *disk;
data = read_part_sector(state, MPT_PARTITION_SECTOR_OFFSET, &sect);
if (!data)
@@ -100,6 +117,14 @@ int mpt_partition(struct parsed_partitions *state)
return 0;
}
disk = state->bdev->bd_disk;
if (strncmp(disk->disk_name, boot_device, strlen(disk->disk_name))) {
printk(KERN_CONT "current, boot - (%s, %s)\n",
disk->disk_name, boot_device);
return 1;
}
printk(KERN_CONT "magic - %s\n", mpt->magic);
printk(KERN_CONT "version - %s\n", mpt->version);
printk(KERN_CONT "checksum - %x, result - %x\n", mpt->checksum, mpt_partition_checksum(mpt->partitions,