diff options
| -rw-r--r-- | docs/getting_started/porting-guide.rst | 7 | ||||
| -rw-r--r-- | drivers/partition/gpt.c | 5 | ||||
| -rw-r--r-- | drivers/partition/partition.c | 14 | ||||
| -rw-r--r-- | include/drivers/partition/gpt.h | 4 | ||||
| -rw-r--r-- | include/drivers/partition/partition.h | 10 |
5 files changed, 28 insertions, 12 deletions
diff --git a/docs/getting_started/porting-guide.rst b/docs/getting_started/porting-guide.rst index 5786dd38..97ed1fa4 100644 --- a/docs/getting_started/porting-guide.rst +++ b/docs/getting_started/porting-guide.rst @@ -546,6 +546,13 @@ optionally be defined: PLAT_PARTITION_MAX_ENTRIES := 12 $(eval $(call add_define,PLAT_PARTITION_MAX_ENTRIES)) +- **PLAT_PARTITION_BLOCK_SIZE** + The size of partition block. It could be either 512 bytes or 4096 bytes. + The default value is 512. + `For example, define the build flag in platform.mk`_: + PLAT_PARTITION_BLOCK_SIZE := 4096 + $(eval $(call add_define,PLAT_PARTITION_BLOCK_SIZE)) + The following constant is optional. It should be defined to override the default behaviour of the ``assert()`` function (for example, to save memory). diff --git a/drivers/partition/gpt.c b/drivers/partition/gpt.c index 4577f06a..1b804dee 100644 --- a/drivers/partition/gpt.c +++ b/drivers/partition/gpt.c @@ -52,9 +52,10 @@ int parse_gpt_entry(gpt_entry_t *gpt_entry, partition_entry_t *entry) if (result != 0) { return result; } - entry->start = (uint64_t)gpt_entry->first_lba * PARTITION_BLOCK_SIZE; + entry->start = (uint64_t)gpt_entry->first_lba * + PLAT_PARTITION_BLOCK_SIZE; entry->length = (uint64_t)(gpt_entry->last_lba - gpt_entry->first_lba + 1) * - PARTITION_BLOCK_SIZE; + PLAT_PARTITION_BLOCK_SIZE; return 0; } diff --git a/drivers/partition/partition.c b/drivers/partition/partition.c index 7fdbf538..68133eaf 100644 --- a/drivers/partition/partition.c +++ b/drivers/partition/partition.c @@ -15,7 +15,7 @@ #include <drivers/partition/mbr.h> #include <plat/common/platform.h> -static uint8_t mbr_sector[PARTITION_BLOCK_SIZE]; +static uint8_t mbr_sector[PLAT_PARTITION_BLOCK_SIZE]; static partition_entry_list_t list; #if LOG_LEVEL >= LOG_LEVEL_VERBOSE @@ -57,15 +57,15 @@ static int load_mbr_header(uintptr_t image_handle, mbr_entry_t *mbr_entry) return result; } result = io_read(image_handle, (uintptr_t)&mbr_sector, - PARTITION_BLOCK_SIZE, &bytes_read); + PLAT_PARTITION_BLOCK_SIZE, &bytes_read); if (result != 0) { WARN("Failed to read data (%i)\n", result); return result; } /* Check MBR boot signature. */ - if ((mbr_sector[PARTITION_BLOCK_SIZE - 2] != MBR_SIGNATURE_FIRST) || - (mbr_sector[PARTITION_BLOCK_SIZE - 1] != MBR_SIGNATURE_SECOND)) { + if ((mbr_sector[LEGACY_PARTITION_BLOCK_SIZE - 2] != MBR_SIGNATURE_FIRST) || + (mbr_sector[LEGACY_PARTITION_BLOCK_SIZE - 1] != MBR_SIGNATURE_SECOND)) { return -ENOENT; } offset = (uintptr_t)&mbr_sector + MBR_PRIMARY_ENTRY_OFFSET; @@ -120,15 +120,15 @@ static int load_mbr_entry(uintptr_t image_handle, mbr_entry_t *mbr_entry, return result; } result = io_read(image_handle, (uintptr_t)&mbr_sector, - PARTITION_BLOCK_SIZE, &bytes_read); + PLAT_PARTITION_BLOCK_SIZE, &bytes_read); if (result != 0) { WARN("Failed to read data (%i)\n", result); return result; } /* Check MBR boot signature. */ - if ((mbr_sector[PARTITION_BLOCK_SIZE - 2] != MBR_SIGNATURE_FIRST) || - (mbr_sector[PARTITION_BLOCK_SIZE - 1] != MBR_SIGNATURE_SECOND)) { + if ((mbr_sector[LEGACY_PARTITION_BLOCK_SIZE - 2] != MBR_SIGNATURE_FIRST) || + (mbr_sector[LEGACY_PARTITION_BLOCK_SIZE - 1] != MBR_SIGNATURE_SECOND)) { return -ENOENT; } offset = (uintptr_t)&mbr_sector + diff --git a/include/drivers/partition/gpt.h b/include/drivers/partition/gpt.h index 3ae160fd..d923e953 100644 --- a/include/drivers/partition/gpt.h +++ b/include/drivers/partition/gpt.h @@ -10,9 +10,9 @@ #include <drivers/partition/partition.h> #define PARTITION_TYPE_GPT 0xee -#define GPT_HEADER_OFFSET PARTITION_BLOCK_SIZE +#define GPT_HEADER_OFFSET PLAT_PARTITION_BLOCK_SIZE #define GPT_ENTRY_OFFSET (GPT_HEADER_OFFSET + \ - PARTITION_BLOCK_SIZE) + PLAT_PARTITION_BLOCK_SIZE) #define GUID_LEN 16 #define GPT_SIGNATURE "EFI PART" diff --git a/include/drivers/partition/partition.h b/include/drivers/partition/partition.h index d94c7824..5f648337 100644 --- a/include/drivers/partition/partition.h +++ b/include/drivers/partition/partition.h @@ -17,7 +17,15 @@ CASSERT(PLAT_PARTITION_MAX_ENTRIES <= 128, assert_plat_partition_max_entries); -#define PARTITION_BLOCK_SIZE 512 +#if !PLAT_PARTITION_BLOCK_SIZE +# define PLAT_PARTITION_BLOCK_SIZE 512 +#endif /* PLAT_PARTITION_BLOCK_SIZE */ + +CASSERT((PLAT_PARTITION_BLOCK_SIZE == 512) || + (PLAT_PARTITION_BLOCK_SIZE == 4096), + assert_plat_partition_block_size); + +#define LEGACY_PARTITION_BLOCK_SIZE 512 #define EFI_NAMELEN 36 |