mirror of
https://github.com/u-boot/u-boot.git
synced 2024-12-06 02:53:37 +08:00
56844a22b7
Commit 2a1a2cb6
didnt remove the dummy mem reservation in fdt_chosen,
and this stopped Linux from booting with a Ramdisk. This patch fixes
this, by deleting the useless dummy mem reservation.
When booting with a Ramdisk, a fix offset FDT_RAMDISK_OVERHEAD is now
added to of_size, so we dont need anymore a dummy mem reservation.
I measured the value of FDT_RAMDISK_OVERHEAD on a MPC8270 based
system (=0x44 bytes) and rounded it up to 0x80).
Signed-off-by: Heiko Schocher <hs@denx.de>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
#ifndef _FDT_H
|
|
#define _FDT_H
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
struct fdt_header {
|
|
uint32_t magic; /* magic word FDT_MAGIC */
|
|
uint32_t totalsize; /* total size of DT block */
|
|
uint32_t off_dt_struct; /* offset to structure */
|
|
uint32_t off_dt_strings; /* offset to strings */
|
|
uint32_t off_mem_rsvmap; /* offset to memory reserve map */
|
|
uint32_t version; /* format version */
|
|
uint32_t last_comp_version; /* last compatible version */
|
|
|
|
/* version 2 fields below */
|
|
uint32_t boot_cpuid_phys; /* Which physical CPU id we're
|
|
booting on */
|
|
/* version 3 fields below */
|
|
uint32_t size_dt_strings; /* size of the strings block */
|
|
|
|
/* version 17 fields below */
|
|
uint32_t size_dt_struct; /* size of the structure block */
|
|
};
|
|
|
|
struct fdt_reserve_entry {
|
|
uint64_t address;
|
|
uint64_t size;
|
|
};
|
|
|
|
struct fdt_node_header {
|
|
uint32_t tag;
|
|
char name[0];
|
|
};
|
|
|
|
struct fdt_property {
|
|
uint32_t tag;
|
|
uint32_t len;
|
|
uint32_t nameoff;
|
|
char data[0];
|
|
};
|
|
|
|
#endif /* !__ASSEMBLY */
|
|
|
|
#define FDT_MAGIC 0xd00dfeed /* 4: version, 4: total size */
|
|
#define FDT_TAGSIZE sizeof(uint32_t)
|
|
|
|
#define FDT_BEGIN_NODE 0x1 /* Start node: full name */
|
|
#define FDT_END_NODE 0x2 /* End node */
|
|
#define FDT_PROP 0x3 /* Property: name off,
|
|
size, content */
|
|
#define FDT_NOP 0x4 /* nop */
|
|
#define FDT_END 0x9
|
|
|
|
#define FDT_V1_SIZE (7*sizeof(uint32_t))
|
|
#define FDT_V2_SIZE (FDT_V1_SIZE + sizeof(uint32_t))
|
|
#define FDT_V3_SIZE (FDT_V2_SIZE + sizeof(uint32_t))
|
|
#define FDT_V16_SIZE FDT_V3_SIZE
|
|
#define FDT_V17_SIZE (FDT_V16_SIZE + sizeof(uint32_t))
|
|
|
|
/* adding a ramdisk needs 0x44 bytes in version 2008.10 */
|
|
#define FDT_RAMDISK_OVERHEAD 0x80
|
|
#endif /* _FDT_H */
|