* (C) Copyright 2007
* Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
*
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __FDT_SUPPORT_H
#include <libfdt.h>
-u32 fdt_getprop_u32_default(const void *fdt, const char *path,
- const char *prop, const u32 dflt);
-int fdt_chosen(void *fdt, int force);
-int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end, int force);
+uint32_t fdt_getprop_u32_default_node(const void *fdt, int off, int cell,
+ const char *prop, const uint32_t dflt);
+uint32_t fdt_getprop_u32_default(const void *fdt, const char *path,
+ const char *prop, const uint32_t 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);
+ uint32_t val, int create);
static inline void do_fixup_by_path_string(void *fdt, const char *path,
const char *prop, const char *status)
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);
+ const char *prop, uint32_t 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);
-int fdt_fixup_memory(void *blob, u64 start, u64 size);
-int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[], int banks);
+ const char *prop, uint32_t 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, uint64_t start, uint64_t 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
+ */
+int fdt_fixup_memory_banks(void *blob, uint64_t start[], uint64_t size[], int banks);
+
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);
+#if defined(__UBOOT__)
+/**
+ * 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_HAS_FSL_DR_USB) || defined(CONFIG_HAS_FSL_MPH_USB)
void fdt_fixup_dr_usb(void *blob, bd_t *bd);
#else
int fdt_pci_dma_ranges(void *blob, int phb_off, struct pci_controller *hose);
#endif
-void ft_board_setup(void *blob, bd_t *bd);
+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);
-void set_working_fdt_addr(void *addr);
-int fdt_resize(void *blob);
+/**
+ * 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);
+int fdt_shrink_to_minimum(void *blob);
int fdt_increase_size(void *fdt, int add_len);
int fdt_fixup_nor_flash_size(void *blob);
void fdt_fixup_mtdparts(void *fdt, void *node_info, int node_info_size);
void fdt_del_node_and_alias(void *blob, const char *alias);
-u64 fdt_translate_address(void *blob, int node_offset, const __be32 *in_addr);
+uint64_t fdt_translate_address(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_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(void *fdt, int node);
+ uint64_t addr);
+uint64_t fdt_get_base_address(void *fdt, int node);
+int fdt_read_range(void *fdt, int node, int n, uint64_t *child_addr,
+ uint64_t *addr, uint64_t *len);
+#endif /* __UBOOT__ */
enum fdt_status {
FDT_STATUS_OKAY,
{
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,
+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)
+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)
+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 uint64_t of_read_number(const fdt32_t *cell, int size)
+{
+ uint64_t r = 0;
+
+ while (size--) {
+ r = (r << 32) | fdt32_to_cpu(*cell);
+ cell++;
+ }
+ return r;
+}
+
+void of_bus_default_count_cells(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, uint64_t base_address, uint32_t width,
+ uint32_t height, uint32_t stride, const char *format);
#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
#endif /* ifndef __FDT_SUPPORT_H */
projects / karo-tx-uboot.git / blobdiff