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disk: generate GUID Partiton Tables

PATCH New Donghwa Lee 3 participants 3 messages May 2, 2012 – Aug 9, 2012

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Donghwa Lee

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#0 lore raw

PATCH 1/1 disk: generate GUID Partiton Tables

This patch manipulates GUID Papartition Tables.
I send this patch on behalf of Gwuieon Jin.

Signed-off-by Gwuieon Jin <[email protected]>
Signed-off-by Kyungmin Park <[email protected]>
---
 disk/part_efi.c |  107 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 disk/part_efi.h |    2 +
 include/part.h  |    2 +
 3 files changed, 111 insertions(+), 0 deletions(-)
disk/part_efi.c +107 -0
index b6cda57..ce25ad5 100644
@@ -433,4 +433,111 @@ static int is_pte_valid(gpt_entry * pte)
 		return 1;
 	}
 }
+
+void set_gpt_table(block_dev_desc_t *dev_desc,	unsigned int part_start_lba,
+		int parts, unsigned int *blocks, unsigned int *part_offset)
+{
+	legacy_mbr protective_mbr;
+	gpt_header p_gpt_head, s_gpt_head;
+	gpt_entry p_gpt_entry[GPT_ENTRY_NUMBERS],
+			  s_gpt_entry[GPT_ENTRY_NUMBERS];
+	efi_guid_t disk_uuid, part_uuid;
+	unsigned long crc32_tmp, tmp_val;
+	unsigned int size = 0;
+	unsigned int offset = part_start_lba;
+	int i;
+
+	memset(&protective_mbr, 0, sizeof(legacy_mbr));
+	memset(&p_gpt_head, 0, sizeof(gpt_header));
+	memset(&s_gpt_head, 0, sizeof(gpt_header));
+	memset(p_gpt_entry, 0, GPT_ENTRY_NUMBERS * sizeof(gpt_entry));
+	memset(s_gpt_entry, 0, GPT_ENTRY_NUMBERS * sizeof(gpt_entry));
+
+	/* protective MBR (LBA0) */
+	*(unsigned short *) protective_mbr.signature = MSDOS_MBR_SIGNATURE;
+	protective_mbr.partition_record[0].sys_ind = EFI_PMBR_OSTYPE_EFI_GPT;
+	tmp_val = 1UL;
+	memcpy(protective_mbr.partition_record[0].start_sect, &tmp_val, 4);
+	tmp_val = (unsigned long) (dev_desc->lba - 1);
+	memcpy(protective_mbr.partition_record[0].nr_sects, &tmp_val, 4);
+	dev_desc->block_write(dev_desc->dev, 0, 1, &protective_mbr);
+
+	/* primary GPT header (LBA1) */
+	*(unsigned long long *) p_gpt_head.signature = GPT_HEADER_SIGNATURE;
+	*(unsigned long *) p_gpt_head.revision = GPT_HEADER_REVISION_V1;
+	*(unsigned long *) p_gpt_head.header_size = sizeof(gpt_header);
+	*(unsigned long long *) p_gpt_head.my_lba = 1;
+	*(unsigned long long *) p_gpt_head.alternate_lba = dev_desc->lba - 1;
+	*(unsigned long long *) p_gpt_head.first_usable_lba = 34;
+	*(unsigned long long *) p_gpt_head.last_usable_lba = dev_desc->lba - 34;
+	*(unsigned long long *) p_gpt_head.partition_entry_lba = 2;
+	*(unsigned long *) p_gpt_head.num_partition_entries = GPT_ENTRY_NUMBERS;
+	*(unsigned long *) p_gpt_head.sizeof_partition_entry = GPT_ENTRY_SIZE;
+	*(unsigned long *) p_gpt_head.header_crc32 = 0;
+	*(unsigned long *) p_gpt_head.partition_entry_array_crc32 = 0;
+
+	/* primary partition entrys (LBA2-33) */
+	for (i = 0; i < parts; i++) {
+		memcpy(p_gpt_entry[i].partition_type_guid.b,
+				&PARTITION_BASIC_DATA_GUID, 16);
+
+		*(unsigned long long *) p_gpt_entry[i].starting_lba = offset;
+		/* allocate remaining memory in last partition */
+		if (i != parts - 1)
+			*(unsigned long long *) p_gpt_entry[i].ending_lba =
+				offset + blocks[i] - 1;
+		else
+			*(unsigned long long *) p_gpt_entry[i].ending_lba =
+				dev_desc->lba - 33;
+		memset(&p_gpt_entry[i].attributes, 0,
+				sizeof(gpt_entry_attributes));
+		part_offset[i] = offset;
+		offset += blocks[i];
+	}
+
+	crc32_tmp = efi_crc32((const unsigned char *)p_gpt_entry,
+				le32_to_int(p_gpt_head.num_partition_entries) *
+				le32_to_int(p_gpt_head.sizeof_partition_entry));
+	memcpy(p_gpt_head.partition_entry_array_crc32, &crc32_tmp,
+			sizeof(crc32_tmp));
+
+	crc32_tmp = efi_crc32((const unsigned char *)&p_gpt_head,
+			le32_to_int(p_gpt_head.header_size));
+	memcpy(p_gpt_head.header_crc32, &crc32_tmp, sizeof(crc32_tmp));
+
+	dev_desc->block_write(dev_desc->dev, 1, 1, &p_gpt_head);
+	dev_desc->block_write(dev_desc->dev, 2, 32, p_gpt_entry);
+
+	/* secondary partition entrys */
+	memcpy(s_gpt_entry, p_gpt_entry,
+			GPT_ENTRY_NUMBERS * sizeof(gpt_entry));
+
+	/* secondary gpt header */
+	memcpy(&s_gpt_head, &p_gpt_head, sizeof(gpt_header));
+	*(unsigned long long *) s_gpt_head.my_lba =
+		le64_to_int(p_gpt_head.alternate_lba);
+	*(unsigned long long *) s_gpt_head.alternate_lba =
+		le64_to_int(p_gpt_head.my_lba);
+	*(unsigned long long *) s_gpt_head.partition_entry_lba =
+		le64_to_int(p_gpt_head.last_usable_lba) + 1;
+	*(unsigned long *) s_gpt_head.header_crc32 = 0;
+	*(unsigned long *) s_gpt_head.partition_entry_array_crc32 = 0;
+
+	crc32_tmp = efi_crc32((const unsigned char *)s_gpt_entry,
+				le32_to_int(s_gpt_head.num_partition_entries) *
+				le32_to_int(s_gpt_head.sizeof_partition_entry));
+	memcpy(s_gpt_head.partition_entry_array_crc32, &crc32_tmp,
+			sizeof(unsigned	long));
+
+	crc32_tmp = efi_crc32((const unsigned char *)&s_gpt_head,
+			le32_to_int(s_gpt_head.header_size));
+	memcpy(s_gpt_head.header_crc32, &crc32_tmp, sizeof(unsigned long));
+
+	dev_desc->block_write(dev_desc->dev,
+			le64_to_int(s_gpt_head.partition_entry_lba),
+			32, s_gpt_entry);
+	dev_desc->block_write(dev_desc->dev,
+			le64_to_int(s_gpt_head.partition_entry_lba) + 32,
+			1, &s_gpt_head);
+}
 #endif
disk/part_efi.h +2 -0
index 5903e7c..ddc2a7f 100644
@@ -41,6 +41,8 @@
 #define GPT_HEADER_REVISION_V1 0x00010000
 #define GPT_PRIMARY_PARTITION_TABLE_LBA 1ULL
 #define GPT_ENTRY_NAME "gpt"
+#define GPT_ENTRY_NUMBERS		128
+#define GPT_ENTRY_SIZE			128
 
 #define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \
 	((efi_guid_t) \
include/part.h +2 -0
index 1827767..32c3295 100644
@@ -161,6 +161,8 @@ int   test_part_amiga (block_dev_desc_t *dev_desc);
 int get_partition_info_efi (block_dev_desc_t * dev_desc, int part, disk_partition_t *info);
 void print_part_efi (block_dev_desc_t *dev_desc);
 int   test_part_efi (block_dev_desc_t *dev_desc);
+void set_gpt_table(block_dev_desc_t *dev_desc,	unsigned int part_start_lba,
+		int parts, unsigned int *blocks, unsigned int *part_offset);
 #endif
 
 #endif /* _PART_H */
Signature · 1 line
1.7.4.1
#1 lore raw

PATCH 1/1 disk: generate GUID Partiton Tables

Dear Donghwa Lee,

Quoted 16 lines · In message <[email protected]> you wrote:

This patch manipulates GUID Papartition Tables.
I send this patch on behalf of Gwuieon Jin.

Signed-off-by Gwuieon Jin <[email protected]>
Signed-off-by Kyungmin Park <[email protected]>
---
 disk/part_efi.c |  107 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 disk/part_efi.h |    2 +
 include/part.h  |    2 +
 3 files changed, 111 insertions(+), 0 deletions(-)
disk/part_efi.c +0 -0
index b6cda57..ce25ad5 100644

disk/part_efi.c static int is_pte_valid(gpt_entry * pte) · line 438

Quoted 6 lines
disk/part_efi.c +3 -0
@@ -433,4 +433,111 @@ static int is_pte_valid(gpt_entry * pte)
 		return 1;
 	}
 }
+
+void set_gpt_table(block_dev_desc_t *dev_desc,	unsigned int part_start_lba,
+		int parts, unsigned int *blocks, unsigned int *part_offset)

Is there any code anywhere that actually calls this function?

I cannot see it, and we don't add dead code...

Best regards,

Wolfgang Denk

Signature · 5 lines
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
"If a computer can't directly address all the RAM you can  use,  it's
just a toy."         - anonymous comp.sys.amiga posting, non-sequitir
#2 lore raw

PATCH 1/1 disk: generate GUID Partiton Tables

Quoted 30 lines · Wolfgang Denk

Dear Donghwa Lee,

Quoted 17 lines · In message <[email protected]> you wrote:

This patch manipulates GUID Papartition Tables.
I send this patch on behalf of Gwuieon Jin.

Signed-off-by Gwuieon Jin <[email protected]>
Signed-off-by Kyungmin Park <[email protected]>
---
 disk/part_efi.c |  107
+++++++++++++++++++++++++++++++++++++++++++++++++++++++
 disk/part_efi.h |    2 +
 include/part.h  |    2 +
 3 files changed, 111 insertions(+), 0 deletions(-)
disk/part_efi.c +0 -0
index b6cda57..ce25ad5 100644

disk/part_efi.c static int is_pte_valid(gpt_entry * pte) · line 439

Quoted 7 lines
disk/part_efi.c +3 -0
@@ -433,4 +433,111 @@ static int is_pte_valid(gpt_entry * pte)
 		return 1;
 	}
 }
+
+void set_gpt_table(block_dev_desc_t *dev_desc,	unsigned int
 part_start_lba,
+		int parts, unsigned int *blocks, unsigned int *part_offset)

Is there any code anywhere that actually calls this function?

Quoted 1 line

I cannot see it, and we don't add dead code...

It used at generating partition when new partition information downloaded by USB.
and it's preperation patch for it.
However, as you concerns thses codes are not yet posted. it will send patches together next time.

Thank you,
Kyungmin Park

Quoted 16 lines

Best regards,

Wolfgang Denk

--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de "If a computer can't directly address all the RAM you can use, it's
just a toy." - anonymous comp.sys.amiga posting, non-sequitir
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