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Elphel
ezynq
Commits
f1b4f09b
Commit
f1b4f09b
authored
Dec 27, 2018
by
Oleg Dzhimiev
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fdt_support.h
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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* (C) Copyright 2007
* Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
*/
#ifndef __FDT_SUPPORT_H
#define __FDT_SUPPORT_H
#ifdef CONFIG_OF_LIBFDT
#include <linux/libfdt.h>
u32
fdt_getprop_u32_default_node
(
const
void
*
fdt
,
int
off
,
int
cell
,
const
char
*
prop
,
const
u32
dflt
);
u32
fdt_getprop_u32_default
(
const
void
*
fdt
,
const
char
*
path
,
const
char
*
prop
,
const
u32
dflt
);
/**
* Add data to the root of the FDT before booting the OS.
*
* See doc/device-tree-bindings/root.txt
*
* @param fdt FDT address in memory
* @return 0 if ok, or -FDT_ERR_... on error
*/
int
fdt_root
(
void
*
fdt
);
/**
* Add chosen data the FDT before booting the OS.
*
* In particular, this adds the kernel command line (bootargs) to the FDT.
*
* @param fdt FDT address in memory
* @return 0 if ok, or -FDT_ERR_... on error
*/
int
fdt_chosen
(
void
*
fdt
);
/**
* Add initrd information to the FDT before booting the OS.
*
* @param fdt FDT address in memory
* @return 0 if ok, or -FDT_ERR_... on error
*/
int
fdt_initrd
(
void
*
fdt
,
ulong
initrd_start
,
ulong
initrd_end
);
void
do_fixup_by_path
(
void
*
fdt
,
const
char
*
path
,
const
char
*
prop
,
const
void
*
val
,
int
len
,
int
create
);
void
do_fixup_by_path_u32
(
void
*
fdt
,
const
char
*
path
,
const
char
*
prop
,
u32
val
,
int
create
);
static
inline
void
do_fixup_by_path_string
(
void
*
fdt
,
const
char
*
path
,
const
char
*
prop
,
const
char
*
status
)
{
do_fixup_by_path
(
fdt
,
path
,
prop
,
status
,
strlen
(
status
)
+
1
,
1
);
}
void
do_fixup_by_prop
(
void
*
fdt
,
const
char
*
pname
,
const
void
*
pval
,
int
plen
,
const
char
*
prop
,
const
void
*
val
,
int
len
,
int
create
);
void
do_fixup_by_prop_u32
(
void
*
fdt
,
const
char
*
pname
,
const
void
*
pval
,
int
plen
,
const
char
*
prop
,
u32
val
,
int
create
);
void
do_fixup_by_compat
(
void
*
fdt
,
const
char
*
compat
,
const
char
*
prop
,
const
void
*
val
,
int
len
,
int
create
);
void
do_fixup_by_compat_u32
(
void
*
fdt
,
const
char
*
compat
,
const
char
*
prop
,
u32
val
,
int
create
);
/**
* Setup the memory node in the DT. Creates one if none was existing before.
* Calls fdt_fixup_memory_banks() to populate a single reg pair covering the
* whole memory.
*
* @param blob FDT blob to update
* @param start Begin of DRAM mapping in physical memory
* @param size Size of the single memory bank
* @return 0 if ok, or -1 or -FDT_ERR_... on error
*/
int
fdt_fixup_memory
(
void
*
blob
,
u64
start
,
u64
size
);
/**
* Fill the DT memory node with multiple memory banks.
* Creates the node if none was existing before.
* If banks is 0, it will not touch the existing reg property. This allows
* boards to not mess with the existing DT setup, which may have been
* filled in properly before.
*
* @param blob FDT blob to update
* @param start Array of size <banks> to hold the start addresses.
* @param size Array of size <banks> to hold the size of each region.
* @param banks Number of memory banks to create. If 0, the reg
* property will be left untouched.
* @return 0 if ok, or -1 or -FDT_ERR_... on error
*/
#ifdef CONFIG_ARCH_FIXUP_FDT_MEMORY
int
fdt_fixup_memory_banks
(
void
*
blob
,
u64
start
[],
u64
size
[],
int
banks
);
#else
static
inline
int
fdt_fixup_memory_banks
(
void
*
blob
,
u64
start
[],
u64
size
[],
int
banks
)
{
return
0
;
}
#endif
void
fdt_fixup_ethernet
(
void
*
fdt
);
int
fdt_find_and_setprop
(
void
*
fdt
,
const
char
*
node
,
const
char
*
prop
,
const
void
*
val
,
int
len
,
int
create
);
void
fdt_fixup_qe_firmware
(
void
*
fdt
);
/**
* Update native-mode property of display-timings node to the phandle
* of the timings matching a display by name (case insensitive).
*
* see kernel Documentation/devicetree/bindings/video/display-timing.txt
*
* @param blob FDT blob to update
* @param path path within dt
* @param display name of display timing to match
* @return 0 if ok, or -FDT_ERR_... on error
*/
int
fdt_fixup_display
(
void
*
blob
,
const
char
*
path
,
const
char
*
display
);
#if defined(CONFIG_USB_EHCI_FSL) || defined(CONFIG_USB_XHCI_FSL)
void
fsl_fdt_fixup_dr_usb
(
void
*
blob
,
bd_t
*
bd
);
#else
static
inline
void
fsl_fdt_fixup_dr_usb
(
void
*
blob
,
bd_t
*
bd
)
{}
#endif
/* defined(CONFIG_USB_EHCI_FSL) || defined(CONFIG_USB_XHCI_FSL) */
#if defined(CONFIG_SYS_FSL_SEC_COMPAT)
void
fdt_fixup_crypto_node
(
void
*
blob
,
int
sec_rev
);
#else
static
inline
void
fdt_fixup_crypto_node
(
void
*
blob
,
int
sec_rev
)
{}
#endif
/**
* Record information about a processed loadable in /fit-images (creating
* /fit-images if necessary).
*
* @param blob FDT blob to update
* @param index index of this loadable
* @param name name of the loadable
* @param load_addr address the loadable was loaded to
* @param size number of bytes loaded
* @param entry_point entry point (if specified, otherwise pass -1)
* @param type type (if specified, otherwise pass NULL)
* @param os os-type (if specified, otherwise pass NULL)
* @return 0 if ok, or -1 or -FDT_ERR_... on error
*/
int
fdt_record_loadable
(
void
*
blob
,
u32
index
,
const
char
*
name
,
uintptr_t
load_addr
,
u32
size
,
uintptr_t
entry_point
,
const
char
*
type
,
const
char
*
os
);
#ifdef CONFIG_PCI
#include <pci.h>
int
fdt_pci_dma_ranges
(
void
*
blob
,
int
phb_off
,
struct
pci_controller
*
hose
);
#endif
int
fdt_find_or_add_subnode
(
void
*
fdt
,
int
parentoffset
,
const
char
*
name
);
/**
* Add board-specific data to the FDT before booting the OS.
*
* Use CONFIG_SYS_FDT_PAD to ensure there is sufficient space.
* This function is called if CONFIG_OF_BOARD_SETUP is defined
*
* @param blob FDT blob to update
* @param bd_t Pointer to board data
* @return 0 if ok, or -FDT_ERR_... on error
*/
int
ft_board_setup
(
void
*
blob
,
bd_t
*
bd
);
/*
* The keystone2 SOC requires all 32 bit aliased addresses to be converted
* to their 36 physical format. This has to happen after all fdt nodes
* are added or modified by the image_setup_libfdt(). The ft_board_setup_ex()
* called at the end of the image_setup_libfdt() is to do that convertion.
*/
void
ft_board_setup_ex
(
void
*
blob
,
bd_t
*
bd
);
void
ft_cpu_setup
(
void
*
blob
,
bd_t
*
bd
);
void
ft_pci_setup
(
void
*
blob
,
bd_t
*
bd
);
/**
* Add system-specific data to the FDT before booting the OS.
*
* Use CONFIG_SYS_FDT_PAD to ensure there is sufficient space.
* This function is called if CONFIG_OF_SYSTEM_SETUP is defined
*
* @param blob FDT blob to update
* @param bd_t Pointer to board data
* @return 0 if ok, or -FDT_ERR_... on error
*/
int
ft_system_setup
(
void
*
blob
,
bd_t
*
bd
);
void
set_working_fdt_addr
(
ulong
addr
);
/**
* shrink down the given blob to minimum size + some extrasize if required
*
* @param blob FDT blob to update
* @param extrasize additional bytes needed
* @return 0 if ok, or -FDT_ERR_... on error
*/
int
fdt_shrink_to_minimum
(
void
*
blob
,
uint
extrasize
);
int
fdt_increase_size
(
void
*
fdt
,
int
add_len
);
int
fdt_fixup_nor_flash_size
(
void
*
blob
);
struct
node_info
;
#if defined(CONFIG_FDT_FIXUP_PARTITIONS)
void
fdt_fixup_mtdparts
(
void
*
fdt
,
const
struct
node_info
*
node_info
,
int
node_info_size
);
#else
static
inline
void
fdt_fixup_mtdparts
(
void
*
fdt
,
const
struct
node_info
*
node_info
,
int
node_info_size
)
{
}
#endif
void
fdt_del_node_and_alias
(
void
*
blob
,
const
char
*
alias
);
u64
fdt_translate_address
(
const
void
*
blob
,
int
node_offset
,
const
__be32
*
in_addr
);
int
fdt_node_offset_by_compat_reg
(
void
*
blob
,
const
char
*
compat
,
phys_addr_t
compat_off
);
int
fdt_alloc_phandle
(
void
*
blob
);
int
fdt_set_phandle
(
void
*
fdt
,
int
nodeoffset
,
uint32_t
phandle
);
unsigned
int
fdt_create_phandle
(
void
*
fdt
,
int
nodeoffset
);
int
fdt_add_edid
(
void
*
blob
,
const
char
*
compat
,
unsigned
char
*
buf
);
int
fdt_verify_alias_address
(
void
*
fdt
,
int
anode
,
const
char
*
alias
,
u64
addr
);
u64
fdt_get_base_address
(
const
void
*
fdt
,
int
node
);
int
fdt_read_range
(
void
*
fdt
,
int
node
,
int
n
,
uint64_t
*
child_addr
,
uint64_t
*
addr
,
uint64_t
*
len
);
enum
fdt_status
{
FDT_STATUS_OKAY
,
FDT_STATUS_DISABLED
,
FDT_STATUS_FAIL
,
FDT_STATUS_FAIL_ERROR_CODE
,
};
int
fdt_set_node_status
(
void
*
fdt
,
int
nodeoffset
,
enum
fdt_status
status
,
unsigned
int
error_code
);
static
inline
int
fdt_status_okay
(
void
*
fdt
,
int
nodeoffset
)
{
return
fdt_set_node_status
(
fdt
,
nodeoffset
,
FDT_STATUS_OKAY
,
0
);
}
static
inline
int
fdt_status_disabled
(
void
*
fdt
,
int
nodeoffset
)
{
return
fdt_set_node_status
(
fdt
,
nodeoffset
,
FDT_STATUS_DISABLED
,
0
);
}
static
inline
int
fdt_status_fail
(
void
*
fdt
,
int
nodeoffset
)
{
return
fdt_set_node_status
(
fdt
,
nodeoffset
,
FDT_STATUS_FAIL
,
0
);
}
int
fdt_set_status_by_alias
(
void
*
fdt
,
const
char
*
alias
,
enum
fdt_status
status
,
unsigned
int
error_code
);
static
inline
int
fdt_status_okay_by_alias
(
void
*
fdt
,
const
char
*
alias
)
{
return
fdt_set_status_by_alias
(
fdt
,
alias
,
FDT_STATUS_OKAY
,
0
);
}
static
inline
int
fdt_status_disabled_by_alias
(
void
*
fdt
,
const
char
*
alias
)
{
return
fdt_set_status_by_alias
(
fdt
,
alias
,
FDT_STATUS_DISABLED
,
0
);
}
static
inline
int
fdt_status_fail_by_alias
(
void
*
fdt
,
const
char
*
alias
)
{
return
fdt_set_status_by_alias
(
fdt
,
alias
,
FDT_STATUS_FAIL
,
0
);
}
/* Helper to read a big number; size is in cells (not bytes) */
static
inline
u64
fdt_read_number
(
const
fdt32_t
*
cell
,
int
size
)
{
u64
r
=
0
;
while
(
size
--
)
r
=
(
r
<<
32
)
|
fdt32_to_cpu
(
*
(
cell
++
));
return
r
;
}
void
fdt_support_default_count_cells
(
const
void
*
blob
,
int
parentoffset
,
int
*
addrc
,
int
*
sizec
);
int
ft_verify_fdt
(
void
*
fdt
);
int
arch_fixup_memory_node
(
void
*
blob
);
int
fdt_setup_simplefb_node
(
void
*
fdt
,
int
node
,
u64
base_address
,
u32
width
,
u32
height
,
u32
stride
,
const
char
*
format
);
int
fdt_overlay_apply_verbose
(
void
*
fdt
,
void
*
fdto
);
/**
* fdt_get_cells_len() - Get the length of a type of cell in top-level nodes
*
* Returns the length of the cell type in bytes (4 or 8).
*
* @blob: Pointer to device tree blob
* @nr_cells_name: Name to lookup, e.g. "#address-cells"
*/
int
fdt_get_cells_len
(
const
void
*
blob
,
char
*
nr_cells_name
);
#endif
/* ifdef CONFIG_OF_LIBFDT */
#ifdef USE_HOSTCC
int
fdtdec_get_int
(
const
void
*
blob
,
int
node
,
const
char
*
prop_name
,
int
default_val
);
#endif
#ifdef CONFIG_FMAN_ENET
int
fdt_update_ethernet_dt
(
void
*
blob
);
#endif
#ifdef CONFIG_FSL_MC_ENET
void
fdt_fixup_board_enet
(
void
*
blob
);
#endif
#endif
/* ifndef __FDT_SUPPORT_H */
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